4423 lines
103 KiB
C
4423 lines
103 KiB
C
/* $OpenBSD: roff.c,v 1.272 2023/10/24 20:30:49 schwarze Exp $ */
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/*
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* Copyright (c) 2010-2015, 2017-2023 Ingo Schwarze <schwarze@openbsd.org>
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* Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Implementation of the roff(7) parser for mandoc(1).
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*/
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#include <sys/types.h>
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#include <assert.h>
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#include <ctype.h>
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#include <limits.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "mandoc_aux.h"
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#include "mandoc_ohash.h"
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#include "mandoc.h"
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#include "roff.h"
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#include "mandoc_parse.h"
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#include "libmandoc.h"
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#include "roff_int.h"
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#include "tbl_parse.h"
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#include "eqn_parse.h"
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/* Maximum number of string expansions per line, to break infinite loops. */
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#define EXPAND_LIMIT 1000
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/* Types of definitions of macros and strings. */
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#define ROFFDEF_USER (1 << 1) /* User-defined. */
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#define ROFFDEF_PRE (1 << 2) /* Predefined. */
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#define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
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#define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
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#define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
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ROFFDEF_REN | ROFFDEF_STD)
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#define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
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/* --- data types --------------------------------------------------------- */
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/*
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* An incredibly-simple string buffer.
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*/
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struct roffstr {
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char *p; /* nil-terminated buffer */
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size_t sz; /* saved strlen(p) */
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};
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/*
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* A key-value roffstr pair as part of a singly-linked list.
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*/
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struct roffkv {
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struct roffstr key;
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struct roffstr val;
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struct roffkv *next; /* next in list */
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};
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/*
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* A single number register as part of a singly-linked list.
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*/
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struct roffreg {
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struct roffstr key;
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int val;
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int step;
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struct roffreg *next;
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};
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/*
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* Association of request and macro names with token IDs.
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*/
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struct roffreq {
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enum roff_tok tok;
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char name[];
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};
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/*
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* A macro processing context.
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* More than one is needed when macro calls are nested.
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*/
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struct mctx {
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char **argv;
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int argc;
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int argsz;
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};
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struct roff {
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struct roff_man *man; /* mdoc or man parser */
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struct roffnode *last; /* leaf of stack */
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struct mctx *mstack; /* stack of macro contexts */
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int *rstack; /* stack of inverted `ie' values */
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struct ohash *reqtab; /* request lookup table */
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struct roffreg *regtab; /* number registers */
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struct roffkv *strtab; /* user-defined strings & macros */
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struct roffkv *rentab; /* renamed strings & macros */
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struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
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struct roffstr *xtab; /* single-byte trans table (`tr') */
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const char *current_string; /* value of last called user macro */
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struct tbl_node *first_tbl; /* first table parsed */
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struct tbl_node *last_tbl; /* last table parsed */
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struct tbl_node *tbl; /* current table being parsed */
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struct eqn_node *last_eqn; /* equation parser */
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struct eqn_node *eqn; /* active equation parser */
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int eqn_inline; /* current equation is inline */
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int options; /* parse options */
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int mstacksz; /* current size of mstack */
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int mstackpos; /* position in mstack */
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int rstacksz; /* current size limit of rstack */
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int rstackpos; /* position in rstack */
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int format; /* current file in mdoc or man format */
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char control; /* control character */
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char escape; /* escape character */
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};
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/*
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* A macro definition, condition, or ignored block.
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*/
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struct roffnode {
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enum roff_tok tok; /* type of node */
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struct roffnode *parent; /* up one in stack */
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int line; /* parse line */
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int col; /* parse col */
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char *name; /* node name, e.g. macro name */
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char *end; /* custom end macro of the block */
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int endspan; /* scope to: 1=eol 2=next line -1=\} */
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int rule; /* content is: 1=evaluated 0=skipped */
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};
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#define ROFF_ARGS struct roff *r, /* parse ctx */ \
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enum roff_tok tok, /* tok of macro */ \
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struct buf *buf, /* input buffer */ \
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int ln, /* parse line */ \
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int ppos, /* original pos in buffer */ \
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int pos, /* current pos in buffer */ \
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int *offs /* reset offset of buffer data */
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typedef int (*roffproc)(ROFF_ARGS);
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struct roffmac {
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roffproc proc; /* process new macro */
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roffproc text; /* process as child text of macro */
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roffproc sub; /* process as child of macro */
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int flags;
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#define ROFFMAC_STRUCT (1 << 0) /* always interpret */
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};
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struct predef {
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const char *name; /* predefined input name */
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const char *str; /* replacement symbol */
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};
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#define PREDEF(__name, __str) \
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{ (__name), (__str) },
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/* --- function prototypes ------------------------------------------------ */
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static int roffnode_cleanscope(struct roff *);
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static int roffnode_pop(struct roff *);
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static void roffnode_push(struct roff *, enum roff_tok,
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const char *, int, int);
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static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
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static int roff_als(ROFF_ARGS);
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static int roff_block(ROFF_ARGS);
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static int roff_block_text(ROFF_ARGS);
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static int roff_block_sub(ROFF_ARGS);
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static int roff_break(ROFF_ARGS);
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static int roff_cblock(ROFF_ARGS);
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static int roff_cc(ROFF_ARGS);
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static int roff_ccond(struct roff *, int, int);
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static int roff_char(ROFF_ARGS);
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static int roff_cond(ROFF_ARGS);
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static int roff_cond_checkend(ROFF_ARGS);
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static int roff_cond_text(ROFF_ARGS);
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static int roff_cond_sub(ROFF_ARGS);
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static int roff_ds(ROFF_ARGS);
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static int roff_ec(ROFF_ARGS);
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static int roff_eo(ROFF_ARGS);
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static int roff_eqndelim(struct roff *, struct buf *, int);
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static int roff_evalcond(struct roff *, int, char *, int *);
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static int roff_evalnum(struct roff *, int,
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const char *, int *, int *, int);
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static int roff_evalpar(struct roff *, int,
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const char *, int *, int *, int);
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static int roff_evalstrcond(const char *, int *);
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static int roff_expand(struct roff *, struct buf *,
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int, int, char);
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static void roff_expand_patch(struct buf *, int,
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const char *, int);
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static void roff_free1(struct roff *);
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static void roff_freereg(struct roffreg *);
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static void roff_freestr(struct roffkv *);
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static size_t roff_getname(struct roff *, char **, int, int);
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static int roff_getnum(const char *, int *, int *, int);
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static int roff_getop(const char *, int *, char *);
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static int roff_getregn(struct roff *,
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const char *, size_t, char);
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static int roff_getregro(const struct roff *,
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const char *name);
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static const char *roff_getstrn(struct roff *,
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const char *, size_t, int *);
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static int roff_hasregn(const struct roff *,
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const char *, size_t);
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static int roff_insec(ROFF_ARGS);
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static int roff_it(ROFF_ARGS);
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static int roff_line_ignore(ROFF_ARGS);
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static void roff_man_alloc1(struct roff_man *);
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static void roff_man_free1(struct roff_man *);
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static int roff_manyarg(ROFF_ARGS);
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static int roff_mc(ROFF_ARGS);
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static int roff_noarg(ROFF_ARGS);
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static int roff_nop(ROFF_ARGS);
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static int roff_nr(ROFF_ARGS);
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static int roff_onearg(ROFF_ARGS);
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static enum roff_tok roff_parse(struct roff *, char *, int *,
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int, int);
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static int roff_parse_comment(struct roff *, struct buf *,
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int, int, char);
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static int roff_parsetext(struct roff *, struct buf *,
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int, int *);
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static int roff_renamed(ROFF_ARGS);
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static int roff_req_or_macro(ROFF_ARGS);
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static int roff_return(ROFF_ARGS);
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static int roff_rm(ROFF_ARGS);
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static int roff_rn(ROFF_ARGS);
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static int roff_rr(ROFF_ARGS);
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static void roff_setregn(struct roff *, const char *,
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size_t, int, char, int);
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static void roff_setstr(struct roff *,
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const char *, const char *, int);
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static void roff_setstrn(struct roffkv **, const char *,
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size_t, const char *, size_t, int);
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static int roff_shift(ROFF_ARGS);
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static int roff_so(ROFF_ARGS);
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static int roff_tr(ROFF_ARGS);
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static int roff_Dd(ROFF_ARGS);
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static int roff_TE(ROFF_ARGS);
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static int roff_TS(ROFF_ARGS);
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static int roff_EQ(ROFF_ARGS);
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static int roff_EN(ROFF_ARGS);
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static int roff_T_(ROFF_ARGS);
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static int roff_unsupp(ROFF_ARGS);
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static int roff_userdef(ROFF_ARGS);
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/* --- constant data ------------------------------------------------------ */
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#define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
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#define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
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const char *__roff_name[MAN_MAX + 1] = {
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"br", "ce", "fi", "ft",
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"ll", "mc", "nf",
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"po", "rj", "sp",
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"ta", "ti", NULL,
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"ab", "ad", "af", "aln",
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"als", "am", "am1", "ami",
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"ami1", "as", "as1", "asciify",
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"backtrace", "bd", "bleedat", "blm",
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"box", "boxa", "bp", "BP",
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"break", "breakchar", "brnl", "brp",
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"brpnl", "c2", "cc",
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"cf", "cflags", "ch", "char",
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"chop", "class", "close", "CL",
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"color", "composite", "continue", "cp",
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"cropat", "cs", "cu", "da",
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"dch", "Dd", "de", "de1",
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"defcolor", "dei", "dei1", "device",
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"devicem", "di", "do", "ds",
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"ds1", "dwh", "dt", "ec",
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"ecr", "ecs", "el", "em",
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"EN", "eo", "EP", "EQ",
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"errprint", "ev", "evc", "ex",
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"fallback", "fam", "fc", "fchar",
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"fcolor", "fdeferlig", "feature", "fkern",
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"fl", "flig", "fp", "fps",
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"fschar", "fspacewidth", "fspecial", "ftr",
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"fzoom", "gcolor", "hc", "hcode",
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"hidechar", "hla", "hlm", "hpf",
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"hpfa", "hpfcode", "hw", "hy",
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"hylang", "hylen", "hym", "hypp",
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"hys", "ie", "if", "ig",
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"index", "it", "itc", "IX",
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"kern", "kernafter", "kernbefore", "kernpair",
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"lc", "lc_ctype", "lds", "length",
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"letadj", "lf", "lg", "lhang",
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"linetabs", "lnr", "lnrf", "lpfx",
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"ls", "lsm", "lt",
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"mediasize", "minss", "mk", "mso",
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"na", "ne", "nh", "nhychar",
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"nm", "nn", "nop", "nr",
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"nrf", "nroff", "ns", "nx",
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"open", "opena", "os", "output",
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"padj", "papersize", "pc", "pev",
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"pi", "PI", "pl", "pm",
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"pn", "pnr", "ps",
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"psbb", "pshape", "pso", "ptr",
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"pvs", "rchar", "rd", "recursionlimit",
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"return", "rfschar", "rhang",
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"rm", "rn", "rnn", "rr",
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"rs", "rt", "schar", "sentchar",
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"shc", "shift", "sizes", "so",
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"spacewidth", "special", "spreadwarn", "ss",
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"sty", "substring", "sv", "sy",
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"T&", "tc", "TE",
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"TH", "tkf", "tl",
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"tm", "tm1", "tmc", "tr",
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"track", "transchar", "trf", "trimat",
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"trin", "trnt", "troff", "TS",
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"uf", "ul", "unformat", "unwatch",
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"unwatchn", "vpt", "vs", "warn",
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"warnscale", "watch", "watchlength", "watchn",
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"wh", "while", "write", "writec",
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"writem", "xflag", ".", NULL,
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NULL, "text",
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"Dd", "Dt", "Os", "Sh",
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"Ss", "Pp", "D1", "Dl",
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"Bd", "Ed", "Bl", "El",
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"It", "Ad", "An", "Ap",
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"Ar", "Cd", "Cm", "Dv",
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"Er", "Ev", "Ex", "Fa",
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"Fd", "Fl", "Fn", "Ft",
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"Ic", "In", "Li", "Nd",
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"Nm", "Op", "Ot", "Pa",
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"Rv", "St", "Va", "Vt",
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"Xr", "%A", "%B", "%D",
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"%I", "%J", "%N", "%O",
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"%P", "%R", "%T", "%V",
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"Ac", "Ao", "Aq", "At",
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"Bc", "Bf", "Bo", "Bq",
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"Bsx", "Bx", "Db", "Dc",
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"Do", "Dq", "Ec", "Ef",
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"Em", "Eo", "Fx", "Ms",
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"No", "Ns", "Nx", "Ox",
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"Pc", "Pf", "Po", "Pq",
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"Qc", "Ql", "Qo", "Qq",
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"Re", "Rs", "Sc", "So",
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"Sq", "Sm", "Sx", "Sy",
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"Tn", "Ux", "Xc", "Xo",
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"Fo", "Fc", "Oo", "Oc",
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"Bk", "Ek", "Bt", "Hf",
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"Fr", "Ud", "Lb", "Lp",
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"Lk", "Mt", "Brq", "Bro",
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"Brc", "%C", "Es", "En",
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"Dx", "%Q", "%U", "Ta",
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"Tg", NULL,
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"TH", "SH", "SS", "TP",
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"TQ",
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"LP", "PP", "P", "IP",
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"HP", "SM", "SB", "BI",
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"IB", "BR", "RB", "R",
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"B", "I", "IR", "RI",
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"RE", "RS", "DT", "UC",
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"PD", "AT", "in",
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"SY", "YS", "OP",
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"EX", "EE", "UR",
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"UE", "MT", "ME", "MR",
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NULL
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};
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const char *const *roff_name = __roff_name;
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static struct roffmac roffs[TOKEN_NONE] = {
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{ roff_noarg, NULL, NULL, 0 }, /* br */
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{ roff_onearg, NULL, NULL, 0 }, /* ce */
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{ roff_noarg, NULL, NULL, 0 }, /* fi */
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{ roff_onearg, NULL, NULL, 0 }, /* ft */
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{ roff_onearg, NULL, NULL, 0 }, /* ll */
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{ roff_mc, NULL, NULL, 0 }, /* mc */
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{ roff_noarg, NULL, NULL, 0 }, /* nf */
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{ roff_onearg, NULL, NULL, 0 }, /* po */
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{ roff_onearg, NULL, NULL, 0 }, /* rj */
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{ roff_onearg, NULL, NULL, 0 }, /* sp */
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{ roff_manyarg, NULL, NULL, 0 }, /* ta */
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{ roff_onearg, NULL, NULL, 0 }, /* ti */
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{ NULL, NULL, NULL, 0 }, /* ROFF_MAX */
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{ roff_unsupp, NULL, NULL, 0 }, /* ab */
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{ roff_line_ignore, NULL, NULL, 0 }, /* ad */
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{ roff_line_ignore, NULL, NULL, 0 }, /* af */
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{ roff_unsupp, NULL, NULL, 0 }, /* aln */
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{ roff_als, NULL, NULL, 0 }, /* als */
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{ roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
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{ roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
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{ roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
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{ roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
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{ roff_ds, NULL, NULL, 0 }, /* as */
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{ roff_ds, NULL, NULL, 0 }, /* as1 */
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{ roff_unsupp, NULL, NULL, 0 }, /* asciify */
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{ roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
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{ roff_line_ignore, NULL, NULL, 0 }, /* bd */
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{ roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
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{ roff_unsupp, NULL, NULL, 0 }, /* blm */
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{ roff_unsupp, NULL, NULL, 0 }, /* box */
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{ roff_unsupp, NULL, NULL, 0 }, /* boxa */
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{ roff_line_ignore, NULL, NULL, 0 }, /* bp */
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{ roff_unsupp, NULL, NULL, 0 }, /* BP */
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{ roff_break, NULL, NULL, 0 }, /* break */
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{ roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
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{ roff_line_ignore, NULL, NULL, 0 }, /* brnl */
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{ roff_noarg, NULL, NULL, 0 }, /* brp */
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{ roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
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{ roff_unsupp, NULL, NULL, 0 }, /* c2 */
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{ roff_cc, NULL, NULL, 0 }, /* cc */
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{ roff_insec, NULL, NULL, 0 }, /* cf */
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{ roff_line_ignore, NULL, NULL, 0 }, /* cflags */
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{ roff_line_ignore, NULL, NULL, 0 }, /* ch */
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{ roff_char, NULL, NULL, 0 }, /* char */
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{ roff_unsupp, NULL, NULL, 0 }, /* chop */
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{ roff_line_ignore, NULL, NULL, 0 }, /* class */
|
|
{ roff_insec, NULL, NULL, 0 }, /* close */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* CL */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* color */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* composite */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* continue */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* cp */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* cropat */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* cs */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* cu */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* da */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* dch */
|
|
{ roff_Dd, NULL, NULL, 0 }, /* Dd */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* device */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* devicem */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* di */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* do */
|
|
{ roff_ds, NULL, NULL, 0 }, /* ds */
|
|
{ roff_ds, NULL, NULL, 0 }, /* ds1 */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* dwh */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* dt */
|
|
{ roff_ec, NULL, NULL, 0 }, /* ec */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* ecr */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* ecs */
|
|
{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* em */
|
|
{ roff_EN, NULL, NULL, 0 }, /* EN */
|
|
{ roff_eo, NULL, NULL, 0 }, /* eo */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* EP */
|
|
{ roff_EQ, NULL, NULL, 0 }, /* EQ */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* errprint */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* ev */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* evc */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* ex */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fallback */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fam */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* fc */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* fchar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* feature */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fkern */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fl */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* flig */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fp */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fps */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* fschar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ftr */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hc */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hcode */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hla */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hlm */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hpf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hw */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hy */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hylang */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hylen */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hym */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hypp */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hys */
|
|
{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
|
|
{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* index */
|
|
{ roff_it, NULL, NULL, 0 }, /* it */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* itc */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* IX */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* kern */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lc */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lds */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* length */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* letadj */
|
|
{ roff_insec, NULL, NULL, 0 }, /* lf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* lg */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* lhang */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* linetabs */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lnr */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lnrf */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lpfx */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ls */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lsm */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* lt */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* minss */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* mk */
|
|
{ roff_insec, NULL, NULL, 0 }, /* mso */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* na */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ne */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* nh */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* nm */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* nn */
|
|
{ roff_nop, NULL, NULL, 0 }, /* nop */
|
|
{ roff_nr, NULL, NULL, 0 }, /* nr */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* nrf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* nroff */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ns */
|
|
{ roff_insec, NULL, NULL, 0 }, /* nx */
|
|
{ roff_insec, NULL, NULL, 0 }, /* open */
|
|
{ roff_insec, NULL, NULL, 0 }, /* opena */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* os */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* output */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* padj */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* papersize */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pc */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pev */
|
|
{ roff_insec, NULL, NULL, 0 }, /* pi */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* PI */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pl */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pm */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pn */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pnr */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ps */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* psbb */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* pshape */
|
|
{ roff_insec, NULL, NULL, 0 }, /* pso */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ptr */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pvs */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* rchar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* rd */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
|
|
{ roff_return, NULL, NULL, 0 }, /* return */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* rfschar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* rhang */
|
|
{ roff_rm, NULL, NULL, 0 }, /* rm */
|
|
{ roff_rn, NULL, NULL, 0 }, /* rn */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* rnn */
|
|
{ roff_rr, NULL, NULL, 0 }, /* rr */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* rs */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* rt */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* schar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* shc */
|
|
{ roff_shift, NULL, NULL, 0 }, /* shift */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* sizes */
|
|
{ roff_so, NULL, NULL, 0 }, /* so */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* special */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ss */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* sty */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* substring */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* sv */
|
|
{ roff_insec, NULL, NULL, 0 }, /* sy */
|
|
{ roff_T_, NULL, NULL, 0 }, /* T& */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* tc */
|
|
{ roff_TE, NULL, NULL, 0 }, /* TE */
|
|
{ roff_Dd, NULL, NULL, 0 }, /* TH */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* tkf */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* tl */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* tm */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* tmc */
|
|
{ roff_tr, NULL, NULL, 0 }, /* tr */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* track */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* transchar */
|
|
{ roff_insec, NULL, NULL, 0 }, /* trf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* trimat */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* trin */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* trnt */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* troff */
|
|
{ roff_TS, NULL, NULL, 0 }, /* TS */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* uf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ul */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* unformat */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* vpt */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* vs */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* warn */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* watch */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* watchn */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* wh */
|
|
{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
|
|
{ roff_insec, NULL, NULL, 0 }, /* write */
|
|
{ roff_insec, NULL, NULL, 0 }, /* writec */
|
|
{ roff_insec, NULL, NULL, 0 }, /* writem */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* xflag */
|
|
{ roff_cblock, NULL, NULL, 0 }, /* . */
|
|
{ roff_renamed, NULL, NULL, 0 },
|
|
{ roff_userdef, NULL, NULL, 0 }
|
|
};
|
|
|
|
/* Array of injected predefined strings. */
|
|
#define PREDEFS_MAX 38
|
|
static const struct predef predefs[PREDEFS_MAX] = {
|
|
#include "predefs.in"
|
|
};
|
|
|
|
static int roffce_lines; /* number of input lines to center */
|
|
static struct roff_node *roffce_node; /* active request */
|
|
static int roffit_lines; /* number of lines to delay */
|
|
static char *roffit_macro; /* nil-terminated macro line */
|
|
|
|
|
|
/* --- request table ------------------------------------------------------ */
|
|
|
|
struct ohash *
|
|
roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
|
|
{
|
|
struct ohash *htab;
|
|
struct roffreq *req;
|
|
enum roff_tok tok;
|
|
size_t sz;
|
|
unsigned int slot;
|
|
|
|
htab = mandoc_malloc(sizeof(*htab));
|
|
mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
|
|
|
|
for (tok = mintok; tok < maxtok; tok++) {
|
|
if (roff_name[tok] == NULL)
|
|
continue;
|
|
sz = strlen(roff_name[tok]);
|
|
req = mandoc_malloc(sizeof(*req) + sz + 1);
|
|
req->tok = tok;
|
|
memcpy(req->name, roff_name[tok], sz + 1);
|
|
slot = ohash_qlookup(htab, req->name);
|
|
ohash_insert(htab, slot, req);
|
|
}
|
|
return htab;
|
|
}
|
|
|
|
void
|
|
roffhash_free(struct ohash *htab)
|
|
{
|
|
struct roffreq *req;
|
|
unsigned int slot;
|
|
|
|
if (htab == NULL)
|
|
return;
|
|
for (req = ohash_first(htab, &slot); req != NULL;
|
|
req = ohash_next(htab, &slot))
|
|
free(req);
|
|
ohash_delete(htab);
|
|
free(htab);
|
|
}
|
|
|
|
enum roff_tok
|
|
roffhash_find(struct ohash *htab, const char *name, size_t sz)
|
|
{
|
|
struct roffreq *req;
|
|
const char *end;
|
|
|
|
if (sz) {
|
|
end = name + sz;
|
|
req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
|
|
} else
|
|
req = ohash_find(htab, ohash_qlookup(htab, name));
|
|
return req == NULL ? TOKEN_NONE : req->tok;
|
|
}
|
|
|
|
/* --- stack of request blocks -------------------------------------------- */
|
|
|
|
/*
|
|
* Pop the current node off of the stack of roff instructions currently
|
|
* pending. Return 1 if it is a loop or 0 otherwise.
|
|
*/
|
|
static int
|
|
roffnode_pop(struct roff *r)
|
|
{
|
|
struct roffnode *p;
|
|
int inloop;
|
|
|
|
p = r->last;
|
|
inloop = p->tok == ROFF_while;
|
|
r->last = p->parent;
|
|
free(p->name);
|
|
free(p->end);
|
|
free(p);
|
|
return inloop;
|
|
}
|
|
|
|
/*
|
|
* Push a roff node onto the instruction stack. This must later be
|
|
* removed with roffnode_pop().
|
|
*/
|
|
static void
|
|
roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
|
|
int line, int col)
|
|
{
|
|
struct roffnode *p;
|
|
|
|
p = mandoc_calloc(1, sizeof(struct roffnode));
|
|
p->tok = tok;
|
|
if (name)
|
|
p->name = mandoc_strdup(name);
|
|
p->parent = r->last;
|
|
p->line = line;
|
|
p->col = col;
|
|
p->rule = p->parent ? p->parent->rule : 0;
|
|
|
|
r->last = p;
|
|
}
|
|
|
|
/* --- roff parser state data management ---------------------------------- */
|
|
|
|
static void
|
|
roff_free1(struct roff *r)
|
|
{
|
|
int i;
|
|
|
|
tbl_free(r->first_tbl);
|
|
r->first_tbl = r->last_tbl = r->tbl = NULL;
|
|
|
|
eqn_free(r->last_eqn);
|
|
r->last_eqn = r->eqn = NULL;
|
|
|
|
while (r->mstackpos >= 0)
|
|
roff_userret(r);
|
|
|
|
while (r->last)
|
|
roffnode_pop(r);
|
|
|
|
free (r->rstack);
|
|
r->rstack = NULL;
|
|
r->rstacksz = 0;
|
|
r->rstackpos = -1;
|
|
|
|
roff_freereg(r->regtab);
|
|
r->regtab = NULL;
|
|
|
|
roff_freestr(r->strtab);
|
|
roff_freestr(r->rentab);
|
|
roff_freestr(r->xmbtab);
|
|
r->strtab = r->rentab = r->xmbtab = NULL;
|
|
|
|
if (r->xtab)
|
|
for (i = 0; i < 128; i++)
|
|
free(r->xtab[i].p);
|
|
free(r->xtab);
|
|
r->xtab = NULL;
|
|
}
|
|
|
|
void
|
|
roff_reset(struct roff *r)
|
|
{
|
|
roff_free1(r);
|
|
r->options |= MPARSE_COMMENT;
|
|
r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
|
|
r->control = '\0';
|
|
r->escape = '\\';
|
|
roffce_lines = 0;
|
|
roffce_node = NULL;
|
|
roffit_lines = 0;
|
|
roffit_macro = NULL;
|
|
}
|
|
|
|
void
|
|
roff_free(struct roff *r)
|
|
{
|
|
int i;
|
|
|
|
roff_free1(r);
|
|
for (i = 0; i < r->mstacksz; i++)
|
|
free(r->mstack[i].argv);
|
|
free(r->mstack);
|
|
roffhash_free(r->reqtab);
|
|
free(r);
|
|
}
|
|
|
|
struct roff *
|
|
roff_alloc(int options)
|
|
{
|
|
struct roff *r;
|
|
|
|
r = mandoc_calloc(1, sizeof(struct roff));
|
|
r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
|
|
r->options = options | MPARSE_COMMENT;
|
|
r->format = options & (MPARSE_MDOC | MPARSE_MAN);
|
|
r->mstackpos = -1;
|
|
r->rstackpos = -1;
|
|
r->escape = '\\';
|
|
return r;
|
|
}
|
|
|
|
/* --- syntax tree state data management ---------------------------------- */
|
|
|
|
static void
|
|
roff_man_free1(struct roff_man *man)
|
|
{
|
|
if (man->meta.first != NULL)
|
|
roff_node_delete(man, man->meta.first);
|
|
free(man->meta.msec);
|
|
free(man->meta.vol);
|
|
free(man->meta.os);
|
|
free(man->meta.arch);
|
|
free(man->meta.title);
|
|
free(man->meta.name);
|
|
free(man->meta.date);
|
|
free(man->meta.sodest);
|
|
}
|
|
|
|
void
|
|
roff_state_reset(struct roff_man *man)
|
|
{
|
|
man->last = man->meta.first;
|
|
man->last_es = NULL;
|
|
man->flags = 0;
|
|
man->lastsec = man->lastnamed = SEC_NONE;
|
|
man->next = ROFF_NEXT_CHILD;
|
|
roff_setreg(man->roff, "nS", 0, '=');
|
|
}
|
|
|
|
static void
|
|
roff_man_alloc1(struct roff_man *man)
|
|
{
|
|
memset(&man->meta, 0, sizeof(man->meta));
|
|
man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
|
|
man->meta.first->type = ROFFT_ROOT;
|
|
man->meta.macroset = MACROSET_NONE;
|
|
roff_state_reset(man);
|
|
}
|
|
|
|
void
|
|
roff_man_reset(struct roff_man *man)
|
|
{
|
|
roff_man_free1(man);
|
|
roff_man_alloc1(man);
|
|
}
|
|
|
|
void
|
|
roff_man_free(struct roff_man *man)
|
|
{
|
|
roff_man_free1(man);
|
|
free(man->os_r);
|
|
free(man);
|
|
}
|
|
|
|
struct roff_man *
|
|
roff_man_alloc(struct roff *roff, const char *os_s, int quick)
|
|
{
|
|
struct roff_man *man;
|
|
|
|
man = mandoc_calloc(1, sizeof(*man));
|
|
man->roff = roff;
|
|
man->os_s = os_s;
|
|
man->quick = quick;
|
|
roff_man_alloc1(man);
|
|
roff->man = man;
|
|
return man;
|
|
}
|
|
|
|
/* --- syntax tree handling ----------------------------------------------- */
|
|
|
|
struct roff_node *
|
|
roff_node_alloc(struct roff_man *man, int line, int pos,
|
|
enum roff_type type, int tok)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = mandoc_calloc(1, sizeof(*n));
|
|
n->line = line;
|
|
n->pos = pos;
|
|
n->tok = tok;
|
|
n->type = type;
|
|
n->sec = man->lastsec;
|
|
|
|
if (man->flags & MDOC_SYNOPSIS)
|
|
n->flags |= NODE_SYNPRETTY;
|
|
else
|
|
n->flags &= ~NODE_SYNPRETTY;
|
|
if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
|
|
n->flags |= NODE_NOFILL;
|
|
else
|
|
n->flags &= ~NODE_NOFILL;
|
|
if (man->flags & MDOC_NEWLINE)
|
|
n->flags |= NODE_LINE;
|
|
man->flags &= ~MDOC_NEWLINE;
|
|
|
|
return n;
|
|
}
|
|
|
|
void
|
|
roff_node_append(struct roff_man *man, struct roff_node *n)
|
|
{
|
|
|
|
switch (man->next) {
|
|
case ROFF_NEXT_SIBLING:
|
|
if (man->last->next != NULL) {
|
|
n->next = man->last->next;
|
|
man->last->next->prev = n;
|
|
} else
|
|
man->last->parent->last = n;
|
|
man->last->next = n;
|
|
n->prev = man->last;
|
|
n->parent = man->last->parent;
|
|
break;
|
|
case ROFF_NEXT_CHILD:
|
|
if (man->last->child != NULL) {
|
|
n->next = man->last->child;
|
|
man->last->child->prev = n;
|
|
} else
|
|
man->last->last = n;
|
|
man->last->child = n;
|
|
n->parent = man->last;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
man->last = n;
|
|
|
|
switch (n->type) {
|
|
case ROFFT_HEAD:
|
|
n->parent->head = n;
|
|
break;
|
|
case ROFFT_BODY:
|
|
if (n->end != ENDBODY_NOT)
|
|
return;
|
|
n->parent->body = n;
|
|
break;
|
|
case ROFFT_TAIL:
|
|
n->parent->tail = n;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Copy over the normalised-data pointer of our parent. Not
|
|
* everybody has one, but copying a null pointer is fine.
|
|
*/
|
|
|
|
n->norm = n->parent->norm;
|
|
assert(n->parent->type == ROFFT_BLOCK);
|
|
}
|
|
|
|
void
|
|
roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
|
|
n->string = roff_strdup(man->roff, word);
|
|
roff_node_append(man, n);
|
|
n->flags |= NODE_VALID | NODE_ENDED;
|
|
man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
|
|
void
|
|
roff_word_append(struct roff_man *man, const char *word)
|
|
{
|
|
struct roff_node *n;
|
|
char *addstr, *newstr;
|
|
|
|
n = man->last;
|
|
addstr = roff_strdup(man->roff, word);
|
|
mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
|
|
free(addstr);
|
|
free(n->string);
|
|
n->string = newstr;
|
|
man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
|
|
void
|
|
roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
|
|
roff_node_append(man, n);
|
|
man->next = ROFF_NEXT_CHILD;
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
|
|
roff_node_append(man, n);
|
|
man->next = ROFF_NEXT_CHILD;
|
|
return n;
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
|
|
roff_node_append(man, n);
|
|
man->next = ROFF_NEXT_CHILD;
|
|
return n;
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
|
|
roff_node_append(man, n);
|
|
man->next = ROFF_NEXT_CHILD;
|
|
return n;
|
|
}
|
|
|
|
static void
|
|
roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
|
|
{
|
|
struct roff_node *n;
|
|
struct tbl_span *span;
|
|
|
|
if (man->meta.macroset == MACROSET_MAN)
|
|
man_breakscope(man, ROFF_TS);
|
|
while ((span = tbl_span(tbl)) != NULL) {
|
|
n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
|
|
n->span = span;
|
|
roff_node_append(man, n);
|
|
n->flags |= NODE_VALID | NODE_ENDED;
|
|
man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
}
|
|
|
|
void
|
|
roff_node_unlink(struct roff_man *man, struct roff_node *n)
|
|
{
|
|
|
|
/* Adjust siblings. */
|
|
|
|
if (n->prev)
|
|
n->prev->next = n->next;
|
|
if (n->next)
|
|
n->next->prev = n->prev;
|
|
|
|
/* Adjust parent. */
|
|
|
|
if (n->parent != NULL) {
|
|
if (n->parent->child == n)
|
|
n->parent->child = n->next;
|
|
if (n->parent->last == n)
|
|
n->parent->last = n->prev;
|
|
}
|
|
|
|
/* Adjust parse point. */
|
|
|
|
if (man == NULL)
|
|
return;
|
|
if (man->last == n) {
|
|
if (n->prev == NULL) {
|
|
man->last = n->parent;
|
|
man->next = ROFF_NEXT_CHILD;
|
|
} else {
|
|
man->last = n->prev;
|
|
man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
}
|
|
if (man->meta.first == n)
|
|
man->meta.first = NULL;
|
|
}
|
|
|
|
void
|
|
roff_node_relink(struct roff_man *man, struct roff_node *n)
|
|
{
|
|
roff_node_unlink(man, n);
|
|
n->prev = n->next = NULL;
|
|
roff_node_append(man, n);
|
|
}
|
|
|
|
void
|
|
roff_node_free(struct roff_node *n)
|
|
{
|
|
|
|
if (n->args != NULL)
|
|
mdoc_argv_free(n->args);
|
|
if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
|
|
free(n->norm);
|
|
eqn_box_free(n->eqn);
|
|
free(n->string);
|
|
free(n->tag);
|
|
free(n);
|
|
}
|
|
|
|
void
|
|
roff_node_delete(struct roff_man *man, struct roff_node *n)
|
|
{
|
|
|
|
while (n->child != NULL)
|
|
roff_node_delete(man, n->child);
|
|
roff_node_unlink(man, n);
|
|
roff_node_free(n);
|
|
}
|
|
|
|
int
|
|
roff_node_transparent(struct roff_node *n)
|
|
{
|
|
if (n == NULL)
|
|
return 0;
|
|
if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
|
|
return 1;
|
|
return roff_tok_transparent(n->tok);
|
|
}
|
|
|
|
int
|
|
roff_tok_transparent(enum roff_tok tok)
|
|
{
|
|
switch (tok) {
|
|
case ROFF_ft:
|
|
case ROFF_ll:
|
|
case ROFF_mc:
|
|
case ROFF_po:
|
|
case ROFF_ta:
|
|
case MDOC_Db:
|
|
case MDOC_Es:
|
|
case MDOC_Sm:
|
|
case MDOC_Tg:
|
|
case MAN_DT:
|
|
case MAN_UC:
|
|
case MAN_PD:
|
|
case MAN_AT:
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_node_child(struct roff_node *n)
|
|
{
|
|
for (n = n->child; roff_node_transparent(n); n = n->next)
|
|
continue;
|
|
return n;
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_node_prev(struct roff_node *n)
|
|
{
|
|
do {
|
|
n = n->prev;
|
|
} while (roff_node_transparent(n));
|
|
return n;
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_node_next(struct roff_node *n)
|
|
{
|
|
do {
|
|
n = n->next;
|
|
} while (roff_node_transparent(n));
|
|
return n;
|
|
}
|
|
|
|
void
|
|
deroff(char **dest, const struct roff_node *n)
|
|
{
|
|
char *cp;
|
|
size_t sz;
|
|
|
|
if (n->string == NULL) {
|
|
for (n = n->child; n != NULL; n = n->next)
|
|
deroff(dest, n);
|
|
return;
|
|
}
|
|
|
|
/* Skip leading whitespace. */
|
|
|
|
for (cp = n->string; *cp != '\0'; cp++) {
|
|
if (cp[0] == '\\' && cp[1] != '\0' &&
|
|
strchr(" %&0^|~", cp[1]) != NULL)
|
|
cp++;
|
|
else if ( ! isspace((unsigned char)*cp))
|
|
break;
|
|
}
|
|
|
|
/* Skip trailing backslash. */
|
|
|
|
sz = strlen(cp);
|
|
if (sz > 0 && cp[sz - 1] == '\\')
|
|
sz--;
|
|
|
|
/* Skip trailing whitespace. */
|
|
|
|
for (; sz; sz--)
|
|
if ( ! isspace((unsigned char)cp[sz-1]))
|
|
break;
|
|
|
|
/* Skip empty strings. */
|
|
|
|
if (sz == 0)
|
|
return;
|
|
|
|
if (*dest == NULL) {
|
|
*dest = mandoc_strndup(cp, sz);
|
|
return;
|
|
}
|
|
|
|
mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
|
|
free(*dest);
|
|
*dest = cp;
|
|
}
|
|
|
|
/* --- main functions of the roff parser ---------------------------------- */
|
|
|
|
/*
|
|
* Save comments preceding the title macro, for example in order to
|
|
* preserve Copyright and license headers in HTML output,
|
|
* provide diagnostics about RCS ids and trailing whitespace in comments,
|
|
* then discard comments including preceding whitespace.
|
|
* This function also handles input line continuation.
|
|
*/
|
|
static int
|
|
roff_parse_comment(struct roff *r, struct buf *buf, int ln, int pos, char ec)
|
|
{
|
|
struct roff_node *n; /* used for header comments */
|
|
const char *start; /* start of the string to process */
|
|
const char *cp; /* for RCS id parsing */
|
|
char *stesc; /* start of an escape sequence ('\\') */
|
|
char *ep; /* end of comment string */
|
|
int rcsid; /* kind of RCS id seen */
|
|
|
|
for (start = stesc = buf->buf + pos;; stesc++) {
|
|
/*
|
|
* XXX Ugly hack: Remove the newline character that
|
|
* mparse_buf_r() appended to mark the end of input
|
|
* if it is not preceded by an escape character.
|
|
*/
|
|
if (stesc[0] == '\n') {
|
|
assert(stesc[1] == '\0');
|
|
stesc[0] = '\0';
|
|
}
|
|
|
|
/* The line ends without continuation or comment. */
|
|
if (stesc[0] == '\0')
|
|
return ROFF_CONT;
|
|
|
|
/* Unescaped byte: skip it. */
|
|
if (stesc[0] != ec)
|
|
continue;
|
|
|
|
/*
|
|
* XXX Ugly hack: Do not attempt to append another line
|
|
* if the function mparse_buf_r() appended a newline
|
|
* character to indicate the end of input.
|
|
*/
|
|
if (stesc[1] == '\n') {
|
|
assert(stesc[2] == '\0');
|
|
stesc[0] = '\0';
|
|
return ROFF_CONT;
|
|
}
|
|
|
|
/*
|
|
* An escape character at the end of an input line
|
|
* requests line continuation.
|
|
*/
|
|
if (stesc[1] == '\0') {
|
|
stesc[0] = '\0';
|
|
return ROFF_IGN | ROFF_APPEND;
|
|
}
|
|
|
|
/* Found a comment: process it. */
|
|
if (stesc[1] == '"' || stesc[1] == '#')
|
|
break;
|
|
|
|
/* Escaped escape character: skip them both. */
|
|
if (stesc[1] == ec)
|
|
stesc++;
|
|
}
|
|
|
|
/* Look for an RCS id in the comment. */
|
|
|
|
rcsid = 0;
|
|
if ((cp = strstr(stesc + 2, "$" "OpenBSD")) != NULL) {
|
|
rcsid = 1 << MANDOC_OS_OPENBSD;
|
|
cp += 8;
|
|
} else if ((cp = strstr(stesc + 2, "$" "NetBSD")) != NULL) {
|
|
rcsid = 1 << MANDOC_OS_NETBSD;
|
|
cp += 7;
|
|
}
|
|
if (cp != NULL && isalnum((unsigned char)*cp) == 0 &&
|
|
strchr(cp, '$') != NULL) {
|
|
if (r->man->meta.rcsids & rcsid)
|
|
mandoc_msg(MANDOCERR_RCS_REP, ln,
|
|
(int)(stesc - buf->buf) + 2, "%s", stesc + 1);
|
|
r->man->meta.rcsids |= rcsid;
|
|
}
|
|
|
|
/* Warn about trailing whitespace at the end of the comment. */
|
|
|
|
ep = strchr(stesc + 2, '\0') - 1;
|
|
if (*ep == '\n')
|
|
*ep-- = '\0';
|
|
if (*ep == ' ' || *ep == '\t')
|
|
mandoc_msg(MANDOCERR_SPACE_EOL,
|
|
ln, (int)(ep - buf->buf), NULL);
|
|
|
|
/* Save comments preceding the title macro in the syntax tree. */
|
|
|
|
if (r->options & MPARSE_COMMENT) {
|
|
while (*ep == ' ' || *ep == '\t')
|
|
ep--;
|
|
ep[1] = '\0';
|
|
n = roff_node_alloc(r->man, ln, stesc + 1 - buf->buf,
|
|
ROFFT_COMMENT, TOKEN_NONE);
|
|
n->string = mandoc_strdup(stesc + 2);
|
|
roff_node_append(r->man, n);
|
|
n->flags |= NODE_VALID | NODE_ENDED;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
|
|
/* The comment requests line continuation. */
|
|
|
|
if (stesc[1] == '#') {
|
|
*stesc = '\0';
|
|
return ROFF_IGN | ROFF_APPEND;
|
|
}
|
|
|
|
/* Discard the comment including preceding whitespace. */
|
|
|
|
while (stesc > start && stesc[-1] == ' ' &&
|
|
(stesc == start + 1 || stesc[-2] != '\\'))
|
|
stesc--;
|
|
*stesc = '\0';
|
|
return ROFF_CONT;
|
|
}
|
|
|
|
/*
|
|
* In the current line, expand escape sequences that produce parsable
|
|
* input text. Also check the syntax of the remaining escape sequences,
|
|
* which typically produce output glyphs or change formatter state.
|
|
*/
|
|
static int
|
|
roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char ec)
|
|
{
|
|
char ubuf[24]; /* buffer to print a number */
|
|
struct mctx *ctx; /* current macro call context */
|
|
const char *res; /* the string to be pasted */
|
|
const char *src; /* source for copying */
|
|
char *dst; /* destination for copying */
|
|
enum mandoc_esc subtype; /* return value from roff_escape */
|
|
int iesc; /* index of leading escape char */
|
|
int inam; /* index of the escape name */
|
|
int iarg; /* index beginning the argument */
|
|
int iendarg; /* index right after the argument */
|
|
int iend; /* index right after the sequence */
|
|
int isrc, idst; /* to reduce \\ and \. in names */
|
|
int deftype; /* type of definition to paste */
|
|
int argi; /* macro argument index */
|
|
int quote_args; /* true for \\$@, false for \\$* */
|
|
int asz; /* length of the replacement */
|
|
int rsz; /* length of the rest of the string */
|
|
int npos; /* position in numeric expression */
|
|
int expand_count; /* to avoid infinite loops */
|
|
|
|
expand_count = 0;
|
|
while (buf->buf[pos] != '\0') {
|
|
|
|
/*
|
|
* Skip plain ASCII characters.
|
|
* If we have a non-standard escape character,
|
|
* escape literal backslashes because all processing in
|
|
* subsequent functions uses the standard escaping rules.
|
|
*/
|
|
|
|
if (buf->buf[pos] != ec) {
|
|
if (buf->buf[pos] == '\\') {
|
|
roff_expand_patch(buf, pos, "\\e", pos + 1);
|
|
pos++;
|
|
}
|
|
pos++;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Parse escape sequences,
|
|
* issue diagnostic messages when appropriate,
|
|
* and skip sequences that do not need expansion.
|
|
* If we have a non-standard escape character, translate
|
|
* it to backslashes and translate backslashes to \e.
|
|
*/
|
|
|
|
if (roff_escape(buf->buf, ln, pos, &iesc, &inam,
|
|
&iarg, &iendarg, &iend) != ESCAPE_EXPAND) {
|
|
while (pos < iend) {
|
|
if (buf->buf[pos] == ec) {
|
|
buf->buf[pos] = '\\';
|
|
if (pos + 1 < iend)
|
|
pos++;
|
|
} else if (buf->buf[pos] == '\\') {
|
|
roff_expand_patch(buf,
|
|
pos, "\\e", pos + 1);
|
|
pos++;
|
|
iend++;
|
|
}
|
|
pos++;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
/* Reduce \\ and \. in names. */
|
|
|
|
if (buf->buf[inam] == '*' || buf->buf[inam] == 'n') {
|
|
isrc = idst = iarg;
|
|
while (isrc < iendarg) {
|
|
if (isrc + 1 < iendarg &&
|
|
buf->buf[isrc] == '\\' &&
|
|
(buf->buf[isrc + 1] == '\\' ||
|
|
buf->buf[isrc + 1] == '.'))
|
|
isrc++;
|
|
buf->buf[idst++] = buf->buf[isrc++];
|
|
}
|
|
iendarg -= isrc - idst;
|
|
}
|
|
|
|
/* Handle expansion. */
|
|
|
|
res = NULL;
|
|
switch (buf->buf[inam]) {
|
|
case '*':
|
|
if (iendarg == iarg)
|
|
break;
|
|
deftype = ROFFDEF_USER | ROFFDEF_PRE;
|
|
if ((res = roff_getstrn(r, buf->buf + iarg,
|
|
iendarg - iarg, &deftype)) != NULL)
|
|
break;
|
|
|
|
/*
|
|
* If not overridden,
|
|
* let \*(.T through to the formatters.
|
|
*/
|
|
|
|
if (iendarg - iarg == 2 &&
|
|
buf->buf[iarg] == '.' &&
|
|
buf->buf[iarg + 1] == 'T') {
|
|
roff_setstrn(&r->strtab, ".T", 2, NULL, 0, 0);
|
|
pos = iend;
|
|
continue;
|
|
}
|
|
|
|
mandoc_msg(MANDOCERR_STR_UNDEF, ln, iesc,
|
|
"%.*s", iendarg - iarg, buf->buf + iarg);
|
|
break;
|
|
|
|
case '$':
|
|
if (r->mstackpos < 0) {
|
|
mandoc_msg(MANDOCERR_ARG_UNDEF, ln, iesc,
|
|
"%.*s", iend - iesc, buf->buf + iesc);
|
|
break;
|
|
}
|
|
ctx = r->mstack + r->mstackpos;
|
|
argi = buf->buf[iarg] - '1';
|
|
if (argi >= 0 && argi <= 8) {
|
|
if (argi < ctx->argc)
|
|
res = ctx->argv[argi];
|
|
break;
|
|
}
|
|
if (buf->buf[iarg] == '*')
|
|
quote_args = 0;
|
|
else if (buf->buf[iarg] == '@')
|
|
quote_args = 1;
|
|
else {
|
|
mandoc_msg(MANDOCERR_ARG_NONUM, ln, iesc,
|
|
"%.*s", iend - iesc, buf->buf + iesc);
|
|
break;
|
|
}
|
|
asz = 0;
|
|
for (argi = 0; argi < ctx->argc; argi++) {
|
|
if (argi)
|
|
asz++; /* blank */
|
|
if (quote_args)
|
|
asz += 2; /* quotes */
|
|
asz += strlen(ctx->argv[argi]);
|
|
}
|
|
if (asz != iend - iesc) {
|
|
rsz = buf->sz - iend;
|
|
if (asz < iend - iesc)
|
|
memmove(buf->buf + iesc + asz,
|
|
buf->buf + iend, rsz);
|
|
buf->sz = iesc + asz + rsz;
|
|
buf->buf = mandoc_realloc(buf->buf, buf->sz);
|
|
if (asz > iend - iesc)
|
|
memmove(buf->buf + iesc + asz,
|
|
buf->buf + iend, rsz);
|
|
}
|
|
dst = buf->buf + iesc;
|
|
for (argi = 0; argi < ctx->argc; argi++) {
|
|
if (argi)
|
|
*dst++ = ' ';
|
|
if (quote_args)
|
|
*dst++ = '"';
|
|
src = ctx->argv[argi];
|
|
while (*src != '\0')
|
|
*dst++ = *src++;
|
|
if (quote_args)
|
|
*dst++ = '"';
|
|
}
|
|
continue;
|
|
case 'A':
|
|
ubuf[0] = iendarg > iarg ? '1' : '0';
|
|
ubuf[1] = '\0';
|
|
res = ubuf;
|
|
break;
|
|
case 'B':
|
|
npos = 0;
|
|
ubuf[0] = iendarg > iarg && iend > iendarg &&
|
|
roff_evalnum(r, ln, buf->buf + iarg, &npos,
|
|
NULL, ROFFNUM_SCALE) &&
|
|
npos == iendarg - iarg ? '1' : '0';
|
|
ubuf[1] = '\0';
|
|
res = ubuf;
|
|
break;
|
|
case 'V':
|
|
mandoc_msg(MANDOCERR_UNSUPP, ln, iesc,
|
|
"%.*s", iend - iesc, buf->buf + iesc);
|
|
roff_expand_patch(buf, iendarg, "}", iend);
|
|
roff_expand_patch(buf, iesc, "${", iarg);
|
|
continue;
|
|
case 'g':
|
|
break;
|
|
case 'n':
|
|
if (iendarg > iarg)
|
|
(void)snprintf(ubuf, sizeof(ubuf), "%d",
|
|
roff_getregn(r, buf->buf + iarg,
|
|
iendarg - iarg, buf->buf[inam + 1]));
|
|
else
|
|
ubuf[0] = '\0';
|
|
res = ubuf;
|
|
break;
|
|
case 'w':
|
|
rsz = 0;
|
|
subtype = ESCAPE_UNDEF;
|
|
while (iarg < iendarg) {
|
|
asz = subtype == ESCAPE_SKIPCHAR ? 0 : 1;
|
|
if (buf->buf[iarg] != '\\') {
|
|
rsz += asz;
|
|
iarg++;
|
|
continue;
|
|
}
|
|
switch ((subtype = roff_escape(buf->buf, 0,
|
|
iarg, NULL, NULL, NULL, NULL, &iarg))) {
|
|
case ESCAPE_SPECIAL:
|
|
case ESCAPE_NUMBERED:
|
|
case ESCAPE_UNICODE:
|
|
case ESCAPE_OVERSTRIKE:
|
|
case ESCAPE_UNDEF:
|
|
break;
|
|
case ESCAPE_DEVICE:
|
|
asz *= 8;
|
|
break;
|
|
case ESCAPE_EXPAND:
|
|
abort();
|
|
default:
|
|
continue;
|
|
}
|
|
rsz += asz;
|
|
}
|
|
(void)snprintf(ubuf, sizeof(ubuf), "%d", rsz * 24);
|
|
res = ubuf;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (res == NULL)
|
|
res = "";
|
|
if (++expand_count > EXPAND_LIMIT ||
|
|
buf->sz + strlen(res) > SHRT_MAX) {
|
|
mandoc_msg(MANDOCERR_ROFFLOOP, ln, iesc, NULL);
|
|
return ROFF_IGN;
|
|
}
|
|
roff_expand_patch(buf, iesc, res, iend);
|
|
}
|
|
return ROFF_CONT;
|
|
}
|
|
|
|
/*
|
|
* Replace the substring from the start position (inclusive)
|
|
* to end position (exclusive) with the repl(acement) string.
|
|
*/
|
|
static void
|
|
roff_expand_patch(struct buf *buf, int start, const char *repl, int end)
|
|
{
|
|
char *nbuf;
|
|
|
|
buf->sz = mandoc_asprintf(&nbuf, "%.*s%s%s", start, buf->buf,
|
|
repl, buf->buf + end) + 1;
|
|
free(buf->buf);
|
|
buf->buf = nbuf;
|
|
}
|
|
|
|
/*
|
|
* Parse a quoted or unquoted roff-style request or macro argument.
|
|
* Return a pointer to the parsed argument, which is either the original
|
|
* pointer or advanced by one byte in case the argument is quoted.
|
|
* NUL-terminate the argument in place.
|
|
* Collapse pairs of quotes inside quoted arguments.
|
|
* Advance the argument pointer to the next argument,
|
|
* or to the NUL byte terminating the argument line.
|
|
*/
|
|
char *
|
|
roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
|
|
{
|
|
struct buf buf;
|
|
char *cp, *start;
|
|
int newesc, pairs, quoted, white;
|
|
|
|
/* Quoting can only start with a new word. */
|
|
start = *cpp;
|
|
quoted = 0;
|
|
if ('"' == *start) {
|
|
quoted = 1;
|
|
start++;
|
|
}
|
|
|
|
newesc = pairs = white = 0;
|
|
for (cp = start; '\0' != *cp; cp++) {
|
|
|
|
/*
|
|
* Move the following text left
|
|
* after quoted quotes and after "\\" and "\t".
|
|
*/
|
|
if (pairs)
|
|
cp[-pairs] = cp[0];
|
|
|
|
if ('\\' == cp[0]) {
|
|
/*
|
|
* In copy mode, translate double to single
|
|
* backslashes and backslash-t to literal tabs.
|
|
*/
|
|
switch (cp[1]) {
|
|
case 'a':
|
|
case 't':
|
|
cp[-pairs] = '\t';
|
|
pairs++;
|
|
cp++;
|
|
break;
|
|
case '\\':
|
|
cp[-pairs] = '\\';
|
|
newesc = 1;
|
|
pairs++;
|
|
cp++;
|
|
break;
|
|
case ' ':
|
|
/* Skip escaped blanks. */
|
|
if (0 == quoted)
|
|
cp++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else if (0 == quoted) {
|
|
if (' ' == cp[0]) {
|
|
/* Unescaped blanks end unquoted args. */
|
|
white = 1;
|
|
break;
|
|
}
|
|
} else if ('"' == cp[0]) {
|
|
if ('"' == cp[1]) {
|
|
/* Quoted quotes collapse. */
|
|
pairs++;
|
|
cp++;
|
|
} else {
|
|
/* Unquoted quotes end quoted args. */
|
|
quoted = 2;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Quoted argument without a closing quote. */
|
|
if (1 == quoted)
|
|
mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
|
|
|
|
/* NUL-terminate this argument and move to the next one. */
|
|
if (pairs)
|
|
cp[-pairs] = '\0';
|
|
if ('\0' != *cp) {
|
|
*cp++ = '\0';
|
|
while (' ' == *cp)
|
|
cp++;
|
|
}
|
|
*pos += (int)(cp - start) + (quoted ? 1 : 0);
|
|
*cpp = cp;
|
|
|
|
if ('\0' == *cp && (white || ' ' == cp[-1]))
|
|
mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
|
|
|
|
start = mandoc_strdup(start);
|
|
if (newesc == 0)
|
|
return start;
|
|
|
|
buf.buf = start;
|
|
buf.sz = strlen(start) + 1;
|
|
buf.next = NULL;
|
|
if (roff_expand(r, &buf, ln, 0, '\\') == ROFF_IGN) {
|
|
free(buf.buf);
|
|
buf.buf = mandoc_strdup("");
|
|
}
|
|
return buf.buf;
|
|
}
|
|
|
|
|
|
/*
|
|
* Process text streams.
|
|
*/
|
|
static int
|
|
roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
|
|
{
|
|
size_t sz;
|
|
const char *start;
|
|
char *p;
|
|
int isz;
|
|
enum mandoc_esc esc;
|
|
|
|
/* Spring the input line trap. */
|
|
|
|
if (roffit_lines == 1) {
|
|
isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
|
|
free(buf->buf);
|
|
buf->buf = p;
|
|
buf->sz = isz + 1;
|
|
*offs = 0;
|
|
free(roffit_macro);
|
|
roffit_lines = 0;
|
|
return ROFF_REPARSE;
|
|
} else if (roffit_lines > 1)
|
|
--roffit_lines;
|
|
|
|
if (roffce_node != NULL && buf->buf[pos] != '\0') {
|
|
if (roffce_lines < 1) {
|
|
r->man->last = roffce_node;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
roffce_lines = 0;
|
|
roffce_node = NULL;
|
|
} else
|
|
roffce_lines--;
|
|
}
|
|
|
|
/* Convert all breakable hyphens into ASCII_HYPH. */
|
|
|
|
start = p = buf->buf + pos;
|
|
|
|
while (*p != '\0') {
|
|
sz = strcspn(p, "-\\");
|
|
p += sz;
|
|
|
|
if (*p == '\0')
|
|
break;
|
|
|
|
if (*p == '\\') {
|
|
/* Skip over escapes. */
|
|
p++;
|
|
esc = mandoc_escape((const char **)&p, NULL, NULL);
|
|
if (esc == ESCAPE_ERROR)
|
|
break;
|
|
while (*p == '-')
|
|
p++;
|
|
continue;
|
|
} else if (p == start) {
|
|
p++;
|
|
continue;
|
|
}
|
|
|
|
if (isalpha((unsigned char)p[-1]) &&
|
|
isalpha((unsigned char)p[1]))
|
|
*p = ASCII_HYPH;
|
|
p++;
|
|
}
|
|
return ROFF_CONT;
|
|
}
|
|
|
|
int
|
|
roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
|
|
{
|
|
enum roff_tok t;
|
|
int e;
|
|
int pos; /* parse point */
|
|
int spos; /* saved parse point for messages */
|
|
int ppos; /* original offset in buf->buf */
|
|
int ctl; /* macro line (boolean) */
|
|
|
|
ppos = pos = *offs;
|
|
|
|
if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
|
|
(r->man->flags & ROFF_NOFILL) == 0 &&
|
|
strchr(" .\\", buf->buf[pos]) == NULL &&
|
|
buf->buf[pos] != r->control &&
|
|
strcspn(buf->buf, " ") < 80)
|
|
mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
|
|
"%.20s...", buf->buf + pos);
|
|
|
|
/* Handle in-line equation delimiters. */
|
|
|
|
if (r->tbl == NULL &&
|
|
r->last_eqn != NULL && r->last_eqn->delim &&
|
|
(r->eqn == NULL || r->eqn_inline)) {
|
|
e = roff_eqndelim(r, buf, pos);
|
|
if (e == ROFF_REPARSE)
|
|
return e;
|
|
assert(e == ROFF_CONT);
|
|
}
|
|
|
|
/* Handle comments and escape sequences. */
|
|
|
|
e = roff_parse_comment(r, buf, ln, pos, r->escape);
|
|
if ((e & ROFF_MASK) == ROFF_IGN)
|
|
return e;
|
|
assert(e == ROFF_CONT);
|
|
|
|
e = roff_expand(r, buf, ln, pos, r->escape);
|
|
if ((e & ROFF_MASK) == ROFF_IGN)
|
|
return e;
|
|
assert(e == ROFF_CONT);
|
|
|
|
ctl = roff_getcontrol(r, buf->buf, &pos);
|
|
|
|
/*
|
|
* First, if a scope is open and we're not a macro, pass the
|
|
* text through the macro's filter.
|
|
* Equations process all content themselves.
|
|
* Tables process almost all content themselves, but we want
|
|
* to warn about macros before passing it there.
|
|
*/
|
|
|
|
if (r->last != NULL && ! ctl) {
|
|
t = r->last->tok;
|
|
e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
|
|
if ((e & ROFF_MASK) == ROFF_IGN)
|
|
return e;
|
|
e &= ~ROFF_MASK;
|
|
} else
|
|
e = ROFF_IGN;
|
|
if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
|
|
eqn_read(r->eqn, buf->buf + ppos);
|
|
return e;
|
|
}
|
|
if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
|
|
tbl_read(r->tbl, ln, buf->buf, ppos);
|
|
roff_addtbl(r->man, ln, r->tbl);
|
|
return e;
|
|
}
|
|
if ( ! ctl) {
|
|
r->options &= ~MPARSE_COMMENT;
|
|
return roff_parsetext(r, buf, pos, offs) | e;
|
|
}
|
|
|
|
/* Skip empty request lines. */
|
|
|
|
if (buf->buf[pos] == '"') {
|
|
mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
|
|
return ROFF_IGN;
|
|
} else if (buf->buf[pos] == '\0')
|
|
return ROFF_IGN;
|
|
|
|
/*
|
|
* If a scope is open, go to the child handler for that macro,
|
|
* as it may want to preprocess before doing anything with it.
|
|
*/
|
|
|
|
if (r->last) {
|
|
t = r->last->tok;
|
|
return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
|
|
}
|
|
|
|
r->options &= ~MPARSE_COMMENT;
|
|
spos = pos;
|
|
t = roff_parse(r, buf->buf, &pos, ln, ppos);
|
|
return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
|
|
}
|
|
|
|
/*
|
|
* Handle a new request or macro.
|
|
* May be called outside any scope or from inside a conditional scope.
|
|
*/
|
|
static int
|
|
roff_req_or_macro(ROFF_ARGS) {
|
|
|
|
/* For now, tables ignore most macros and some request. */
|
|
|
|
if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
|
|
tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
|
|
tok == ROFF_sp)) {
|
|
mandoc_msg(MANDOCERR_TBLMACRO,
|
|
ln, ppos, "%s", buf->buf + ppos);
|
|
if (tok != TOKEN_NONE)
|
|
return ROFF_IGN;
|
|
while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
|
|
pos++;
|
|
while (buf->buf[pos] == ' ')
|
|
pos++;
|
|
tbl_read(r->tbl, ln, buf->buf, pos);
|
|
roff_addtbl(r->man, ln, r->tbl);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/* For now, let high level macros abort .ce mode. */
|
|
|
|
if (roffce_node != NULL &&
|
|
(tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
|
|
tok == ROFF_TH || tok == ROFF_TS)) {
|
|
r->man->last = roffce_node;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
roffce_lines = 0;
|
|
roffce_node = NULL;
|
|
}
|
|
|
|
/*
|
|
* This is neither a roff request nor a user-defined macro.
|
|
* Let the standard macro set parsers handle it.
|
|
*/
|
|
|
|
if (tok == TOKEN_NONE)
|
|
return ROFF_CONT;
|
|
|
|
/* Execute a roff request or a user-defined macro. */
|
|
|
|
return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
|
|
}
|
|
|
|
/*
|
|
* Internal interface function to tell the roff parser that execution
|
|
* of the current macro ended. This is required because macro
|
|
* definitions usually do not end with a .return request.
|
|
*/
|
|
void
|
|
roff_userret(struct roff *r)
|
|
{
|
|
struct mctx *ctx;
|
|
int i;
|
|
|
|
assert(r->mstackpos >= 0);
|
|
ctx = r->mstack + r->mstackpos;
|
|
for (i = 0; i < ctx->argc; i++)
|
|
free(ctx->argv[i]);
|
|
ctx->argc = 0;
|
|
r->mstackpos--;
|
|
}
|
|
|
|
void
|
|
roff_endparse(struct roff *r)
|
|
{
|
|
if (r->last != NULL)
|
|
mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
|
|
r->last->col, "%s", roff_name[r->last->tok]);
|
|
|
|
if (r->eqn != NULL) {
|
|
mandoc_msg(MANDOCERR_BLK_NOEND,
|
|
r->eqn->node->line, r->eqn->node->pos, "EQ");
|
|
eqn_parse(r->eqn);
|
|
r->eqn = NULL;
|
|
}
|
|
|
|
if (r->tbl != NULL) {
|
|
tbl_end(r->tbl, 1);
|
|
r->tbl = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse the request or macro name at buf[*pos].
|
|
* Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
|
|
* For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
|
|
* As a side effect, set r->current_string to the definition or to NULL.
|
|
*/
|
|
static enum roff_tok
|
|
roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
|
|
{
|
|
char *cp;
|
|
const char *mac;
|
|
size_t maclen;
|
|
int deftype;
|
|
enum roff_tok t;
|
|
|
|
cp = buf + *pos;
|
|
|
|
if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
|
|
return TOKEN_NONE;
|
|
|
|
mac = cp;
|
|
maclen = roff_getname(r, &cp, ln, ppos);
|
|
|
|
deftype = ROFFDEF_USER | ROFFDEF_REN;
|
|
r->current_string = roff_getstrn(r, mac, maclen, &deftype);
|
|
switch (deftype) {
|
|
case ROFFDEF_USER:
|
|
t = ROFF_USERDEF;
|
|
break;
|
|
case ROFFDEF_REN:
|
|
t = ROFF_RENAMED;
|
|
break;
|
|
default:
|
|
t = roffhash_find(r->reqtab, mac, maclen);
|
|
break;
|
|
}
|
|
if (t != TOKEN_NONE)
|
|
*pos = cp - buf;
|
|
else if (deftype == ROFFDEF_UNDEF) {
|
|
/* Using an undefined macro defines it to be empty. */
|
|
roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
|
|
roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
|
|
}
|
|
return t;
|
|
}
|
|
|
|
/* --- handling of request blocks ----------------------------------------- */
|
|
|
|
/*
|
|
* Close a macro definition block or an "ignore" block.
|
|
*/
|
|
static int
|
|
roff_cblock(ROFF_ARGS)
|
|
{
|
|
int rr;
|
|
|
|
if (r->last == NULL) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
switch (r->last->tok) {
|
|
case ROFF_am:
|
|
case ROFF_ami:
|
|
case ROFF_de:
|
|
case ROFF_dei:
|
|
case ROFF_ig:
|
|
break;
|
|
case ROFF_am1:
|
|
case ROFF_de1:
|
|
/* Remapped in roff_block(). */
|
|
abort();
|
|
default:
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
roffnode_pop(r);
|
|
roffnode_cleanscope(r);
|
|
|
|
/*
|
|
* If a conditional block with braces is still open,
|
|
* check for "\}" block end markers.
|
|
*/
|
|
|
|
if (r->last != NULL && r->last->endspan < 0) {
|
|
rr = 1; /* If arguments follow "\}", warn about them. */
|
|
roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
|
|
}
|
|
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
|
|
".. %s", buf->buf + pos);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/*
|
|
* Pop all nodes ending at the end of the current input line.
|
|
* Return the number of loops ended.
|
|
*/
|
|
static int
|
|
roffnode_cleanscope(struct roff *r)
|
|
{
|
|
int inloop;
|
|
|
|
inloop = 0;
|
|
while (r->last != NULL && r->last->endspan > 0) {
|
|
if (--r->last->endspan != 0)
|
|
break;
|
|
inloop += roffnode_pop(r);
|
|
}
|
|
return inloop;
|
|
}
|
|
|
|
/*
|
|
* Handle the closing "\}" of a conditional block.
|
|
* Apart from generating warnings, this only pops nodes.
|
|
* Return the number of loops ended.
|
|
*/
|
|
static int
|
|
roff_ccond(struct roff *r, int ln, int ppos)
|
|
{
|
|
if (NULL == r->last) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
|
|
return 0;
|
|
}
|
|
|
|
switch (r->last->tok) {
|
|
case ROFF_el:
|
|
case ROFF_ie:
|
|
case ROFF_if:
|
|
case ROFF_while:
|
|
break;
|
|
default:
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
|
|
return 0;
|
|
}
|
|
|
|
if (r->last->endspan > -1) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
|
|
return 0;
|
|
}
|
|
|
|
return roffnode_pop(r) + roffnode_cleanscope(r);
|
|
}
|
|
|
|
static int
|
|
roff_block(ROFF_ARGS)
|
|
{
|
|
const char *name, *value;
|
|
char *call, *cp, *iname, *rname;
|
|
size_t csz, namesz, rsz;
|
|
int deftype;
|
|
|
|
/* Ignore groff compatibility mode for now. */
|
|
|
|
if (tok == ROFF_de1)
|
|
tok = ROFF_de;
|
|
else if (tok == ROFF_dei1)
|
|
tok = ROFF_dei;
|
|
else if (tok == ROFF_am1)
|
|
tok = ROFF_am;
|
|
else if (tok == ROFF_ami1)
|
|
tok = ROFF_ami;
|
|
|
|
/* Parse the macro name argument. */
|
|
|
|
cp = buf->buf + pos;
|
|
if (tok == ROFF_ig) {
|
|
iname = NULL;
|
|
namesz = 0;
|
|
} else {
|
|
iname = cp;
|
|
namesz = roff_getname(r, &cp, ln, ppos);
|
|
iname[namesz] = '\0';
|
|
}
|
|
|
|
/* Resolve the macro name argument if it is indirect. */
|
|
|
|
if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
|
|
deftype = ROFFDEF_USER;
|
|
name = roff_getstrn(r, iname, namesz, &deftype);
|
|
if (name == NULL) {
|
|
mandoc_msg(MANDOCERR_STR_UNDEF,
|
|
ln, (int)(iname - buf->buf),
|
|
"%.*s", (int)namesz, iname);
|
|
namesz = 0;
|
|
} else
|
|
namesz = strlen(name);
|
|
} else
|
|
name = iname;
|
|
|
|
if (namesz == 0 && tok != ROFF_ig) {
|
|
mandoc_msg(MANDOCERR_REQ_EMPTY,
|
|
ln, ppos, "%s", roff_name[tok]);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
roffnode_push(r, tok, name, ln, ppos);
|
|
|
|
/*
|
|
* At the beginning of a `de' macro, clear the existing string
|
|
* with the same name, if there is one. New content will be
|
|
* appended from roff_block_text() in multiline mode.
|
|
*/
|
|
|
|
if (tok == ROFF_de || tok == ROFF_dei) {
|
|
roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
|
|
roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
|
|
} else if (tok == ROFF_am || tok == ROFF_ami) {
|
|
deftype = ROFFDEF_ANY;
|
|
value = roff_getstrn(r, iname, namesz, &deftype);
|
|
switch (deftype) { /* Before appending, ... */
|
|
case ROFFDEF_PRE: /* copy predefined to user-defined. */
|
|
roff_setstrn(&r->strtab, name, namesz,
|
|
value, strlen(value), 0);
|
|
break;
|
|
case ROFFDEF_REN: /* call original standard macro. */
|
|
csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
|
|
(int)strlen(value), value);
|
|
roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
|
|
roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
|
|
free(call);
|
|
break;
|
|
case ROFFDEF_STD: /* rename and call standard macro. */
|
|
rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
|
|
roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
|
|
csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
|
|
(int)rsz, rname);
|
|
roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
|
|
free(call);
|
|
free(rname);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (*cp == '\0')
|
|
return ROFF_IGN;
|
|
|
|
/* Get the custom end marker. */
|
|
|
|
iname = cp;
|
|
namesz = roff_getname(r, &cp, ln, ppos);
|
|
|
|
/* Resolve the end marker if it is indirect. */
|
|
|
|
if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
|
|
deftype = ROFFDEF_USER;
|
|
name = roff_getstrn(r, iname, namesz, &deftype);
|
|
if (name == NULL) {
|
|
mandoc_msg(MANDOCERR_STR_UNDEF,
|
|
ln, (int)(iname - buf->buf),
|
|
"%.*s", (int)namesz, iname);
|
|
namesz = 0;
|
|
} else
|
|
namesz = strlen(name);
|
|
} else
|
|
name = iname;
|
|
|
|
if (namesz)
|
|
r->last->end = mandoc_strndup(name, namesz);
|
|
|
|
if (*cp != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_EXCESS,
|
|
ln, pos, ".%s ... %s", roff_name[tok], cp);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_block_sub(ROFF_ARGS)
|
|
{
|
|
enum roff_tok t;
|
|
int i, j;
|
|
|
|
/*
|
|
* If a custom end marker is a user-defined or predefined macro
|
|
* or a request, interpret it.
|
|
*/
|
|
|
|
if (r->last->end) {
|
|
for (i = pos, j = 0; r->last->end[j]; j++, i++)
|
|
if (buf->buf[i] != r->last->end[j])
|
|
break;
|
|
|
|
if (r->last->end[j] == '\0' &&
|
|
(buf->buf[i] == '\0' ||
|
|
buf->buf[i] == ' ' ||
|
|
buf->buf[i] == '\t')) {
|
|
roffnode_pop(r);
|
|
roffnode_cleanscope(r);
|
|
|
|
while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
|
|
i++;
|
|
|
|
pos = i;
|
|
if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
|
|
TOKEN_NONE)
|
|
return ROFF_RERUN;
|
|
return ROFF_IGN;
|
|
}
|
|
}
|
|
|
|
/* Handle the standard end marker. */
|
|
|
|
t = roff_parse(r, buf->buf, &pos, ln, ppos);
|
|
if (t == ROFF_cblock)
|
|
return roff_cblock(r, t, buf, ln, ppos, pos, offs);
|
|
|
|
/* Not an end marker, so append the line to the block. */
|
|
|
|
if (tok != ROFF_ig)
|
|
roff_setstr(r, r->last->name, buf->buf + ppos, 2);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_block_text(ROFF_ARGS)
|
|
{
|
|
|
|
if (tok != ROFF_ig)
|
|
roff_setstr(r, r->last->name, buf->buf + pos, 2);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/*
|
|
* Check for a closing "\}" and handle it.
|
|
* In this function, the final "int *offs" argument is used for
|
|
* different purposes than elsewhere:
|
|
* Input: *offs == 0: caller wants to discard arguments following \}
|
|
* *offs == 1: caller wants to preserve text following \}
|
|
* Output: *offs = 0: tell caller to discard input line
|
|
* *offs = 1: tell caller to use input line
|
|
*/
|
|
static int
|
|
roff_cond_checkend(ROFF_ARGS)
|
|
{
|
|
char *ep;
|
|
int endloop, irc, rr;
|
|
|
|
irc = ROFF_IGN;
|
|
rr = r->last->rule;
|
|
endloop = tok != ROFF_while ? ROFF_IGN :
|
|
rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
|
|
if (roffnode_cleanscope(r))
|
|
irc |= endloop;
|
|
|
|
/*
|
|
* If "\}" occurs on a macro line without a preceding macro or
|
|
* a text line contains nothing else, drop the line completely.
|
|
*/
|
|
|
|
ep = buf->buf + pos;
|
|
if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
|
|
rr = 0;
|
|
|
|
/*
|
|
* The closing delimiter "\}" rewinds the conditional scope
|
|
* but is otherwise ignored when interpreting the line.
|
|
*/
|
|
|
|
while ((ep = strchr(ep, '\\')) != NULL) {
|
|
switch (ep[1]) {
|
|
case '}':
|
|
if (ep[2] == '\0')
|
|
ep[0] = '\0';
|
|
else if (rr)
|
|
ep[1] = '&';
|
|
else
|
|
memmove(ep, ep + 2, strlen(ep + 2) + 1);
|
|
if (roff_ccond(r, ln, ep - buf->buf))
|
|
irc |= endloop;
|
|
break;
|
|
case '\0':
|
|
++ep;
|
|
break;
|
|
default:
|
|
ep += 2;
|
|
break;
|
|
}
|
|
}
|
|
*offs = rr;
|
|
return irc;
|
|
}
|
|
|
|
/*
|
|
* Parse and process a request or macro line in conditional scope.
|
|
*/
|
|
static int
|
|
roff_cond_sub(ROFF_ARGS)
|
|
{
|
|
struct roffnode *bl;
|
|
int irc, rr, spos;
|
|
enum roff_tok t;
|
|
|
|
rr = 0; /* If arguments follow "\}", skip them. */
|
|
irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
|
|
spos = pos;
|
|
t = roff_parse(r, buf->buf, &pos, ln, ppos);
|
|
|
|
/*
|
|
* Handle requests and macros if the conditional evaluated
|
|
* to true or if they are structurally required.
|
|
* The .break request is always handled specially.
|
|
*/
|
|
|
|
if (t == ROFF_break) {
|
|
if (irc & ROFF_LOOPMASK)
|
|
irc = ROFF_IGN | ROFF_LOOPEXIT;
|
|
else if (rr) {
|
|
for (bl = r->last; bl != NULL; bl = bl->parent) {
|
|
bl->rule = 0;
|
|
if (bl->tok == ROFF_while)
|
|
break;
|
|
}
|
|
}
|
|
} else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
|
|
irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
|
|
if (irc & ROFF_WHILE)
|
|
irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
|
|
}
|
|
return irc;
|
|
}
|
|
|
|
/*
|
|
* Parse and process a text line in conditional scope.
|
|
*/
|
|
static int
|
|
roff_cond_text(ROFF_ARGS)
|
|
{
|
|
int irc, rr;
|
|
|
|
rr = 1; /* If arguments follow "\}", preserve them. */
|
|
irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
|
|
if (rr)
|
|
irc |= ROFF_CONT;
|
|
return irc;
|
|
}
|
|
|
|
/* --- handling of numeric and conditional expressions -------------------- */
|
|
|
|
/*
|
|
* Parse a single signed integer number. Stop at the first non-digit.
|
|
* If there is at least one digit, return success and advance the
|
|
* parse point, else return failure and let the parse point unchanged.
|
|
* Ignore overflows, treat them just like the C language.
|
|
*/
|
|
static int
|
|
roff_getnum(const char *v, int *pos, int *res, int flags)
|
|
{
|
|
int myres, scaled, n, p;
|
|
|
|
if (NULL == res)
|
|
res = &myres;
|
|
|
|
p = *pos;
|
|
n = v[p] == '-';
|
|
if (n || v[p] == '+')
|
|
p++;
|
|
|
|
if (flags & ROFFNUM_WHITE)
|
|
while (isspace((unsigned char)v[p]))
|
|
p++;
|
|
|
|
for (*res = 0; isdigit((unsigned char)v[p]); p++)
|
|
*res = 10 * *res + v[p] - '0';
|
|
if (p == *pos + n)
|
|
return 0;
|
|
|
|
if (n)
|
|
*res = -*res;
|
|
|
|
/* Each number may be followed by one optional scaling unit. */
|
|
|
|
switch (v[p]) {
|
|
case 'f':
|
|
scaled = *res * 65536;
|
|
break;
|
|
case 'i':
|
|
scaled = *res * 240;
|
|
break;
|
|
case 'c':
|
|
scaled = *res * 240 / 2.54;
|
|
break;
|
|
case 'v':
|
|
case 'P':
|
|
scaled = *res * 40;
|
|
break;
|
|
case 'm':
|
|
case 'n':
|
|
scaled = *res * 24;
|
|
break;
|
|
case 'p':
|
|
scaled = *res * 10 / 3;
|
|
break;
|
|
case 'u':
|
|
scaled = *res;
|
|
break;
|
|
case 'M':
|
|
scaled = *res * 6 / 25;
|
|
break;
|
|
default:
|
|
scaled = *res;
|
|
p--;
|
|
break;
|
|
}
|
|
if (flags & ROFFNUM_SCALE)
|
|
*res = scaled;
|
|
|
|
*pos = p + 1;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Evaluate a string comparison condition.
|
|
* The first character is the delimiter.
|
|
* Succeed if the string up to its second occurrence
|
|
* matches the string up to its third occurrence.
|
|
* Advance the cursor after the third occurrence
|
|
* or lacking that, to the end of the line.
|
|
*/
|
|
static int
|
|
roff_evalstrcond(const char *v, int *pos)
|
|
{
|
|
const char *s1, *s2, *s3;
|
|
int match;
|
|
|
|
match = 0;
|
|
s1 = v + *pos; /* initial delimiter */
|
|
s2 = s1 + 1; /* for scanning the first string */
|
|
s3 = strchr(s2, *s1); /* for scanning the second string */
|
|
|
|
if (NULL == s3) /* found no middle delimiter */
|
|
goto out;
|
|
|
|
while ('\0' != *++s3) {
|
|
if (*s2 != *s3) { /* mismatch */
|
|
s3 = strchr(s3, *s1);
|
|
break;
|
|
}
|
|
if (*s3 == *s1) { /* found the final delimiter */
|
|
match = 1;
|
|
break;
|
|
}
|
|
s2++;
|
|
}
|
|
|
|
out:
|
|
if (NULL == s3)
|
|
s3 = strchr(s2, '\0');
|
|
else if (*s3 != '\0')
|
|
s3++;
|
|
*pos = s3 - v;
|
|
return match;
|
|
}
|
|
|
|
/*
|
|
* Evaluate an optionally negated single character, numerical,
|
|
* or string condition.
|
|
*/
|
|
static int
|
|
roff_evalcond(struct roff *r, int ln, char *v, int *pos)
|
|
{
|
|
const char *start, *end;
|
|
char *cp, *name;
|
|
size_t sz;
|
|
int deftype, len, number, savepos, istrue, wanttrue;
|
|
|
|
if ('!' == v[*pos]) {
|
|
wanttrue = 0;
|
|
(*pos)++;
|
|
} else
|
|
wanttrue = 1;
|
|
|
|
switch (v[*pos]) {
|
|
case '\0':
|
|
return 0;
|
|
case 'n':
|
|
case 'o':
|
|
(*pos)++;
|
|
return wanttrue;
|
|
case 'e':
|
|
case 't':
|
|
case 'v':
|
|
(*pos)++;
|
|
return !wanttrue;
|
|
case 'c':
|
|
do {
|
|
(*pos)++;
|
|
} while (v[*pos] == ' ');
|
|
|
|
/*
|
|
* Quirk for groff compatibility:
|
|
* The horizontal tab is neither available nor unavailable.
|
|
*/
|
|
|
|
if (v[*pos] == '\t') {
|
|
(*pos)++;
|
|
return 0;
|
|
}
|
|
|
|
/* Printable ASCII characters are available. */
|
|
|
|
if (v[*pos] != '\\') {
|
|
(*pos)++;
|
|
return wanttrue;
|
|
}
|
|
|
|
end = v + ++*pos;
|
|
switch (mandoc_escape(&end, &start, &len)) {
|
|
case ESCAPE_SPECIAL:
|
|
istrue = mchars_spec2cp(start, len) != -1;
|
|
break;
|
|
case ESCAPE_UNICODE:
|
|
istrue = 1;
|
|
break;
|
|
case ESCAPE_NUMBERED:
|
|
istrue = mchars_num2char(start, len) != -1;
|
|
break;
|
|
default:
|
|
istrue = !wanttrue;
|
|
break;
|
|
}
|
|
*pos = end - v;
|
|
return istrue == wanttrue;
|
|
case 'd':
|
|
case 'r':
|
|
cp = v + *pos + 1;
|
|
while (*cp == ' ')
|
|
cp++;
|
|
name = cp;
|
|
sz = roff_getname(r, &cp, ln, cp - v);
|
|
if (sz == 0)
|
|
istrue = 0;
|
|
else if (v[*pos] == 'r')
|
|
istrue = roff_hasregn(r, name, sz);
|
|
else {
|
|
deftype = ROFFDEF_ANY;
|
|
roff_getstrn(r, name, sz, &deftype);
|
|
istrue = !!deftype;
|
|
}
|
|
*pos = (name + sz) - v;
|
|
return istrue == wanttrue;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
savepos = *pos;
|
|
if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
|
|
return (number > 0) == wanttrue;
|
|
else if (*pos == savepos)
|
|
return roff_evalstrcond(v, pos) == wanttrue;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
roff_line_ignore(ROFF_ARGS)
|
|
{
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_insec(ROFF_ARGS)
|
|
{
|
|
|
|
mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_unsupp(ROFF_ARGS)
|
|
{
|
|
|
|
mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_cond(ROFF_ARGS)
|
|
{
|
|
int irc;
|
|
|
|
roffnode_push(r, tok, NULL, ln, ppos);
|
|
|
|
/*
|
|
* An `.el' has no conditional body: it will consume the value
|
|
* of the current rstack entry set in prior `ie' calls or
|
|
* defaults to DENY.
|
|
*
|
|
* If we're not an `el', however, then evaluate the conditional.
|
|
*/
|
|
|
|
r->last->rule = tok == ROFF_el ?
|
|
(r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
|
|
roff_evalcond(r, ln, buf->buf, &pos);
|
|
|
|
/*
|
|
* An if-else will put the NEGATION of the current evaluated
|
|
* conditional into the stack of rules.
|
|
*/
|
|
|
|
if (tok == ROFF_ie) {
|
|
if (r->rstackpos + 1 == r->rstacksz) {
|
|
r->rstacksz += 16;
|
|
r->rstack = mandoc_reallocarray(r->rstack,
|
|
r->rstacksz, sizeof(int));
|
|
}
|
|
r->rstack[++r->rstackpos] = !r->last->rule;
|
|
}
|
|
|
|
/* If the parent has false as its rule, then so do we. */
|
|
|
|
if (r->last->parent && !r->last->parent->rule)
|
|
r->last->rule = 0;
|
|
|
|
/*
|
|
* Determine scope.
|
|
* If there is nothing on the line after the conditional,
|
|
* not even whitespace, use next-line scope.
|
|
* Except that .while does not support next-line scope.
|
|
*/
|
|
|
|
if (buf->buf[pos] == '\0' && tok != ROFF_while) {
|
|
r->last->endspan = 2;
|
|
goto out;
|
|
}
|
|
|
|
while (buf->buf[pos] == ' ')
|
|
pos++;
|
|
|
|
/* An opening brace requests multiline scope. */
|
|
|
|
if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
|
|
r->last->endspan = -1;
|
|
pos += 2;
|
|
while (buf->buf[pos] == ' ')
|
|
pos++;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Anything else following the conditional causes
|
|
* single-line scope. Warn if the scope contains
|
|
* nothing but trailing whitespace.
|
|
*/
|
|
|
|
if (buf->buf[pos] == '\0')
|
|
mandoc_msg(MANDOCERR_COND_EMPTY,
|
|
ln, ppos, "%s", roff_name[tok]);
|
|
|
|
r->last->endspan = 1;
|
|
|
|
out:
|
|
*offs = pos;
|
|
irc = ROFF_RERUN;
|
|
if (tok == ROFF_while)
|
|
irc |= ROFF_WHILE;
|
|
return irc;
|
|
}
|
|
|
|
static int
|
|
roff_ds(ROFF_ARGS)
|
|
{
|
|
char *string;
|
|
const char *name;
|
|
size_t namesz;
|
|
|
|
/* Ignore groff compatibility mode for now. */
|
|
|
|
if (tok == ROFF_ds1)
|
|
tok = ROFF_ds;
|
|
else if (tok == ROFF_as1)
|
|
tok = ROFF_as;
|
|
|
|
/*
|
|
* The first word is the name of the string.
|
|
* If it is empty or terminated by an escape sequence,
|
|
* abort the `ds' request without defining anything.
|
|
*/
|
|
|
|
name = string = buf->buf + pos;
|
|
if (*name == '\0')
|
|
return ROFF_IGN;
|
|
|
|
namesz = roff_getname(r, &string, ln, pos);
|
|
switch (name[namesz]) {
|
|
case '\\':
|
|
return ROFF_IGN;
|
|
case '\t':
|
|
string = buf->buf + pos + namesz;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Read past the initial double-quote, if any. */
|
|
if (*string == '"')
|
|
string++;
|
|
|
|
/* The rest is the value. */
|
|
roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
|
|
ROFF_as == tok);
|
|
roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/*
|
|
* Parse a single operator, one or two characters long.
|
|
* If the operator is recognized, return success and advance the
|
|
* parse point, else return failure and let the parse point unchanged.
|
|
*/
|
|
static int
|
|
roff_getop(const char *v, int *pos, char *res)
|
|
{
|
|
|
|
*res = v[*pos];
|
|
|
|
switch (*res) {
|
|
case '+':
|
|
case '-':
|
|
case '*':
|
|
case '/':
|
|
case '%':
|
|
case '&':
|
|
case ':':
|
|
break;
|
|
case '<':
|
|
switch (v[*pos + 1]) {
|
|
case '=':
|
|
*res = 'l';
|
|
(*pos)++;
|
|
break;
|
|
case '>':
|
|
*res = '!';
|
|
(*pos)++;
|
|
break;
|
|
case '?':
|
|
*res = 'i';
|
|
(*pos)++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case '>':
|
|
switch (v[*pos + 1]) {
|
|
case '=':
|
|
*res = 'g';
|
|
(*pos)++;
|
|
break;
|
|
case '?':
|
|
*res = 'a';
|
|
(*pos)++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case '=':
|
|
if ('=' == v[*pos + 1])
|
|
(*pos)++;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
(*pos)++;
|
|
|
|
return *res;
|
|
}
|
|
|
|
/*
|
|
* Evaluate either a parenthesized numeric expression
|
|
* or a single signed integer number.
|
|
*/
|
|
static int
|
|
roff_evalpar(struct roff *r, int ln,
|
|
const char *v, int *pos, int *res, int flags)
|
|
{
|
|
|
|
if ('(' != v[*pos])
|
|
return roff_getnum(v, pos, res, flags);
|
|
|
|
(*pos)++;
|
|
if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
|
|
return 0;
|
|
|
|
/*
|
|
* Omission of the closing parenthesis
|
|
* is an error in validation mode,
|
|
* but ignored in evaluation mode.
|
|
*/
|
|
|
|
if (')' == v[*pos])
|
|
(*pos)++;
|
|
else if (NULL == res)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Evaluate a complete numeric expression.
|
|
* Proceed left to right, there is no concept of precedence.
|
|
*/
|
|
static int
|
|
roff_evalnum(struct roff *r, int ln, const char *v,
|
|
int *pos, int *res, int flags)
|
|
{
|
|
int mypos, operand2;
|
|
char operator;
|
|
|
|
if (NULL == pos) {
|
|
mypos = 0;
|
|
pos = &mypos;
|
|
}
|
|
|
|
if (flags & ROFFNUM_WHITE)
|
|
while (isspace((unsigned char)v[*pos]))
|
|
(*pos)++;
|
|
|
|
if ( ! roff_evalpar(r, ln, v, pos, res, flags))
|
|
return 0;
|
|
|
|
while (1) {
|
|
if (flags & ROFFNUM_WHITE)
|
|
while (isspace((unsigned char)v[*pos]))
|
|
(*pos)++;
|
|
|
|
if ( ! roff_getop(v, pos, &operator))
|
|
break;
|
|
|
|
if (flags & ROFFNUM_WHITE)
|
|
while (isspace((unsigned char)v[*pos]))
|
|
(*pos)++;
|
|
|
|
if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
|
|
return 0;
|
|
|
|
if (flags & ROFFNUM_WHITE)
|
|
while (isspace((unsigned char)v[*pos]))
|
|
(*pos)++;
|
|
|
|
if (NULL == res)
|
|
continue;
|
|
|
|
switch (operator) {
|
|
case '+':
|
|
*res += operand2;
|
|
break;
|
|
case '-':
|
|
*res -= operand2;
|
|
break;
|
|
case '*':
|
|
*res *= operand2;
|
|
break;
|
|
case '/':
|
|
if (operand2 == 0) {
|
|
mandoc_msg(MANDOCERR_DIVZERO,
|
|
ln, *pos, "%s", v);
|
|
*res = 0;
|
|
break;
|
|
}
|
|
*res /= operand2;
|
|
break;
|
|
case '%':
|
|
if (operand2 == 0) {
|
|
mandoc_msg(MANDOCERR_DIVZERO,
|
|
ln, *pos, "%s", v);
|
|
*res = 0;
|
|
break;
|
|
}
|
|
*res %= operand2;
|
|
break;
|
|
case '<':
|
|
*res = *res < operand2;
|
|
break;
|
|
case '>':
|
|
*res = *res > operand2;
|
|
break;
|
|
case 'l':
|
|
*res = *res <= operand2;
|
|
break;
|
|
case 'g':
|
|
*res = *res >= operand2;
|
|
break;
|
|
case '=':
|
|
*res = *res == operand2;
|
|
break;
|
|
case '!':
|
|
*res = *res != operand2;
|
|
break;
|
|
case '&':
|
|
*res = *res && operand2;
|
|
break;
|
|
case ':':
|
|
*res = *res || operand2;
|
|
break;
|
|
case 'i':
|
|
if (operand2 < *res)
|
|
*res = operand2;
|
|
break;
|
|
case 'a':
|
|
if (operand2 > *res)
|
|
*res = operand2;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* --- register management ------------------------------------------------ */
|
|
|
|
void
|
|
roff_setreg(struct roff *r, const char *name, int val, char sign)
|
|
{
|
|
roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
|
|
}
|
|
|
|
static void
|
|
roff_setregn(struct roff *r, const char *name, size_t len,
|
|
int val, char sign, int step)
|
|
{
|
|
struct roffreg *reg;
|
|
|
|
/* Search for an existing register with the same name. */
|
|
reg = r->regtab;
|
|
|
|
while (reg != NULL && (reg->key.sz != len ||
|
|
strncmp(reg->key.p, name, len) != 0))
|
|
reg = reg->next;
|
|
|
|
if (NULL == reg) {
|
|
/* Create a new register. */
|
|
reg = mandoc_malloc(sizeof(struct roffreg));
|
|
reg->key.p = mandoc_strndup(name, len);
|
|
reg->key.sz = len;
|
|
reg->val = 0;
|
|
reg->step = 0;
|
|
reg->next = r->regtab;
|
|
r->regtab = reg;
|
|
}
|
|
|
|
if ('+' == sign)
|
|
reg->val += val;
|
|
else if ('-' == sign)
|
|
reg->val -= val;
|
|
else
|
|
reg->val = val;
|
|
if (step != INT_MIN)
|
|
reg->step = step;
|
|
}
|
|
|
|
/*
|
|
* Handle some predefined read-only number registers.
|
|
* For now, return -1 if the requested register is not predefined;
|
|
* in case a predefined read-only register having the value -1
|
|
* were to turn up, another special value would have to be chosen.
|
|
*/
|
|
static int
|
|
roff_getregro(const struct roff *r, const char *name)
|
|
{
|
|
|
|
switch (*name) {
|
|
case '$': /* Number of arguments of the last macro evaluated. */
|
|
return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
|
|
case 'A': /* ASCII approximation mode is always off. */
|
|
return 0;
|
|
case 'g': /* Groff compatibility mode is always on. */
|
|
return 1;
|
|
case 'H': /* Fixed horizontal resolution. */
|
|
return 24;
|
|
case 'j': /* Always adjust left margin only. */
|
|
return 0;
|
|
case 'T': /* Some output device is always defined. */
|
|
return 1;
|
|
case 'V': /* Fixed vertical resolution. */
|
|
return 40;
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
int
|
|
roff_getreg(struct roff *r, const char *name)
|
|
{
|
|
return roff_getregn(r, name, strlen(name), '\0');
|
|
}
|
|
|
|
static int
|
|
roff_getregn(struct roff *r, const char *name, size_t len, char sign)
|
|
{
|
|
struct roffreg *reg;
|
|
int val;
|
|
|
|
if ('.' == name[0] && 2 == len) {
|
|
val = roff_getregro(r, name + 1);
|
|
if (-1 != val)
|
|
return val;
|
|
}
|
|
|
|
for (reg = r->regtab; reg; reg = reg->next) {
|
|
if (len == reg->key.sz &&
|
|
0 == strncmp(name, reg->key.p, len)) {
|
|
switch (sign) {
|
|
case '+':
|
|
reg->val += reg->step;
|
|
break;
|
|
case '-':
|
|
reg->val -= reg->step;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return reg->val;
|
|
}
|
|
}
|
|
|
|
roff_setregn(r, name, len, 0, '\0', INT_MIN);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
roff_hasregn(const struct roff *r, const char *name, size_t len)
|
|
{
|
|
struct roffreg *reg;
|
|
int val;
|
|
|
|
if ('.' == name[0] && 2 == len) {
|
|
val = roff_getregro(r, name + 1);
|
|
if (-1 != val)
|
|
return 1;
|
|
}
|
|
|
|
for (reg = r->regtab; reg; reg = reg->next)
|
|
if (len == reg->key.sz &&
|
|
0 == strncmp(name, reg->key.p, len))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
roff_freereg(struct roffreg *reg)
|
|
{
|
|
struct roffreg *old_reg;
|
|
|
|
while (NULL != reg) {
|
|
free(reg->key.p);
|
|
old_reg = reg;
|
|
reg = reg->next;
|
|
free(old_reg);
|
|
}
|
|
}
|
|
|
|
static int
|
|
roff_nr(ROFF_ARGS)
|
|
{
|
|
char *key, *val, *step;
|
|
size_t keysz;
|
|
int iv, is, len;
|
|
char sign;
|
|
|
|
key = val = buf->buf + pos;
|
|
if (*key == '\0')
|
|
return ROFF_IGN;
|
|
|
|
keysz = roff_getname(r, &val, ln, pos);
|
|
if (key[keysz] == '\\' || key[keysz] == '\t')
|
|
return ROFF_IGN;
|
|
|
|
sign = *val;
|
|
if (sign == '+' || sign == '-')
|
|
val++;
|
|
|
|
len = 0;
|
|
if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
|
|
return ROFF_IGN;
|
|
|
|
step = val + len;
|
|
while (isspace((unsigned char)*step))
|
|
step++;
|
|
if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
|
|
is = INT_MIN;
|
|
|
|
roff_setregn(r, key, keysz, iv, sign, is);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_rr(ROFF_ARGS)
|
|
{
|
|
struct roffreg *reg, **prev;
|
|
char *name, *cp;
|
|
size_t namesz;
|
|
|
|
name = cp = buf->buf + pos;
|
|
if (*name == '\0')
|
|
return ROFF_IGN;
|
|
namesz = roff_getname(r, &cp, ln, pos);
|
|
name[namesz] = '\0';
|
|
|
|
prev = &r->regtab;
|
|
while (1) {
|
|
reg = *prev;
|
|
if (reg == NULL || !strcmp(name, reg->key.p))
|
|
break;
|
|
prev = ®->next;
|
|
}
|
|
if (reg != NULL) {
|
|
*prev = reg->next;
|
|
free(reg->key.p);
|
|
free(reg);
|
|
}
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/* --- handler functions for roff requests -------------------------------- */
|
|
|
|
static int
|
|
roff_rm(ROFF_ARGS)
|
|
{
|
|
const char *name;
|
|
char *cp;
|
|
size_t namesz;
|
|
|
|
cp = buf->buf + pos;
|
|
while (*cp != '\0') {
|
|
name = cp;
|
|
namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
|
|
roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
|
|
roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
|
|
if (name[namesz] == '\\' || name[namesz] == '\t')
|
|
break;
|
|
}
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_it(ROFF_ARGS)
|
|
{
|
|
int iv;
|
|
|
|
/* Parse the number of lines. */
|
|
|
|
if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
|
|
mandoc_msg(MANDOCERR_IT_NONUM,
|
|
ln, ppos, "%s", buf->buf + 1);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
while (isspace((unsigned char)buf->buf[pos]))
|
|
pos++;
|
|
|
|
/*
|
|
* Arm the input line trap.
|
|
* Special-casing "an-trap" is an ugly workaround to cope
|
|
* with DocBook stupidly fiddling with man(7) internals.
|
|
*/
|
|
|
|
roffit_lines = iv;
|
|
roffit_macro = mandoc_strdup(iv != 1 ||
|
|
strcmp(buf->buf + pos, "an-trap") ?
|
|
buf->buf + pos : "br");
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_Dd(ROFF_ARGS)
|
|
{
|
|
int mask;
|
|
enum roff_tok t, te;
|
|
|
|
switch (tok) {
|
|
case ROFF_Dd:
|
|
tok = MDOC_Dd;
|
|
te = MDOC_MAX;
|
|
if (r->format == 0)
|
|
r->format = MPARSE_MDOC;
|
|
mask = MPARSE_MDOC | MPARSE_QUICK;
|
|
break;
|
|
case ROFF_TH:
|
|
tok = MAN_TH;
|
|
te = MAN_MAX;
|
|
if (r->format == 0)
|
|
r->format = MPARSE_MAN;
|
|
mask = MPARSE_QUICK;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
if ((r->options & mask) == 0)
|
|
for (t = tok; t < te; t++)
|
|
roff_setstr(r, roff_name[t], NULL, 0);
|
|
return ROFF_CONT;
|
|
}
|
|
|
|
static int
|
|
roff_TE(ROFF_ARGS)
|
|
{
|
|
r->man->flags &= ~ROFF_NONOFILL;
|
|
if (r->tbl == NULL) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
|
|
return ROFF_IGN;
|
|
}
|
|
if (tbl_end(r->tbl, 0) == 0) {
|
|
r->tbl = NULL;
|
|
free(buf->buf);
|
|
buf->buf = mandoc_strdup(".sp");
|
|
buf->sz = 4;
|
|
*offs = 0;
|
|
return ROFF_REPARSE;
|
|
}
|
|
r->tbl = NULL;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_T_(ROFF_ARGS)
|
|
{
|
|
|
|
if (NULL == r->tbl)
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
|
|
else
|
|
tbl_restart(ln, ppos, r->tbl);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/*
|
|
* Handle in-line equation delimiters.
|
|
*/
|
|
static int
|
|
roff_eqndelim(struct roff *r, struct buf *buf, int pos)
|
|
{
|
|
char *cp1, *cp2;
|
|
const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
|
|
|
|
/*
|
|
* Outside equations, look for an opening delimiter.
|
|
* If we are inside an equation, we already know it is
|
|
* in-line, or this function wouldn't have been called;
|
|
* so look for a closing delimiter.
|
|
*/
|
|
|
|
cp1 = buf->buf + pos;
|
|
cp2 = strchr(cp1, r->eqn == NULL ?
|
|
r->last_eqn->odelim : r->last_eqn->cdelim);
|
|
if (cp2 == NULL)
|
|
return ROFF_CONT;
|
|
|
|
*cp2++ = '\0';
|
|
bef_pr = bef_nl = aft_nl = aft_pr = "";
|
|
|
|
/* Handle preceding text, protecting whitespace. */
|
|
|
|
if (*buf->buf != '\0') {
|
|
if (r->eqn == NULL)
|
|
bef_pr = "\\&";
|
|
bef_nl = "\n";
|
|
}
|
|
|
|
/*
|
|
* Prepare replacing the delimiter with an equation macro
|
|
* and drop leading white space from the equation.
|
|
*/
|
|
|
|
if (r->eqn == NULL) {
|
|
while (*cp2 == ' ')
|
|
cp2++;
|
|
mac = ".EQ";
|
|
} else
|
|
mac = ".EN";
|
|
|
|
/* Handle following text, protecting whitespace. */
|
|
|
|
if (*cp2 != '\0') {
|
|
aft_nl = "\n";
|
|
if (r->eqn != NULL)
|
|
aft_pr = "\\&";
|
|
}
|
|
|
|
/* Do the actual replacement. */
|
|
|
|
buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
|
|
bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
|
|
free(buf->buf);
|
|
buf->buf = cp1;
|
|
|
|
/* Toggle the in-line state of the eqn subsystem. */
|
|
|
|
r->eqn_inline = r->eqn == NULL;
|
|
return ROFF_REPARSE;
|
|
}
|
|
|
|
static int
|
|
roff_EQ(ROFF_ARGS)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
if (r->man->meta.macroset == MACROSET_MAN)
|
|
man_breakscope(r->man, ROFF_EQ);
|
|
n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
|
|
if (ln > r->man->last->line)
|
|
n->flags |= NODE_LINE;
|
|
n->eqn = eqn_box_new();
|
|
roff_node_append(r->man, n);
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
|
|
assert(r->eqn == NULL);
|
|
if (r->last_eqn == NULL)
|
|
r->last_eqn = eqn_alloc();
|
|
else
|
|
eqn_reset(r->last_eqn);
|
|
r->eqn = r->last_eqn;
|
|
r->eqn->node = n;
|
|
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
|
|
".EQ %s", buf->buf + pos);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_EN(ROFF_ARGS)
|
|
{
|
|
if (r->eqn != NULL) {
|
|
eqn_parse(r->eqn);
|
|
r->eqn = NULL;
|
|
} else
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
|
|
"EN %s", buf->buf + pos);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_TS(ROFF_ARGS)
|
|
{
|
|
if (r->tbl != NULL) {
|
|
mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
|
|
tbl_end(r->tbl, 0);
|
|
}
|
|
r->man->flags |= ROFF_NONOFILL;
|
|
r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
|
|
if (r->last_tbl == NULL)
|
|
r->first_tbl = r->tbl;
|
|
r->last_tbl = r->tbl;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_noarg(ROFF_ARGS)
|
|
{
|
|
if (r->man->flags & (MAN_BLINE | MAN_ELINE))
|
|
man_breakscope(r->man, tok);
|
|
if (tok == ROFF_brp)
|
|
tok = ROFF_br;
|
|
roff_elem_alloc(r->man, ln, ppos, tok);
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
|
|
"%s %s", roff_name[tok], buf->buf + pos);
|
|
if (tok == ROFF_nf)
|
|
r->man->flags |= ROFF_NOFILL;
|
|
else if (tok == ROFF_fi)
|
|
r->man->flags &= ~ROFF_NOFILL;
|
|
r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_onearg(ROFF_ARGS)
|
|
{
|
|
struct roff_node *n;
|
|
char *cp;
|
|
int npos;
|
|
|
|
if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
|
|
(tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
|
|
tok == ROFF_ti))
|
|
man_breakscope(r->man, tok);
|
|
|
|
if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
|
|
r->man->last = roffce_node;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
|
|
roff_elem_alloc(r->man, ln, ppos, tok);
|
|
n = r->man->last;
|
|
|
|
cp = buf->buf + pos;
|
|
if (*cp != '\0') {
|
|
while (*cp != '\0' && *cp != ' ')
|
|
cp++;
|
|
while (*cp == ' ')
|
|
*cp++ = '\0';
|
|
if (*cp != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_EXCESS,
|
|
ln, (int)(cp - buf->buf),
|
|
"%s ... %s", roff_name[tok], cp);
|
|
roff_word_alloc(r->man, ln, pos, buf->buf + pos);
|
|
}
|
|
|
|
if (tok == ROFF_ce || tok == ROFF_rj) {
|
|
if (r->man->last->type == ROFFT_ELEM) {
|
|
roff_word_alloc(r->man, ln, pos, "1");
|
|
r->man->last->flags |= NODE_NOSRC;
|
|
}
|
|
npos = 0;
|
|
if (roff_evalnum(r, ln, r->man->last->string, &npos,
|
|
&roffce_lines, 0) == 0) {
|
|
mandoc_msg(MANDOCERR_CE_NONUM,
|
|
ln, pos, "ce %s", buf->buf + pos);
|
|
roffce_lines = 1;
|
|
}
|
|
if (roffce_lines < 1) {
|
|
r->man->last = r->man->last->parent;
|
|
roffce_node = NULL;
|
|
roffce_lines = 0;
|
|
} else
|
|
roffce_node = r->man->last->parent;
|
|
} else {
|
|
n->flags |= NODE_VALID | NODE_ENDED;
|
|
r->man->last = n;
|
|
}
|
|
n->flags |= NODE_LINE;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_manyarg(ROFF_ARGS)
|
|
{
|
|
struct roff_node *n;
|
|
char *sp, *ep;
|
|
|
|
roff_elem_alloc(r->man, ln, ppos, tok);
|
|
n = r->man->last;
|
|
|
|
for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
|
|
while (*ep != '\0' && *ep != ' ')
|
|
ep++;
|
|
while (*ep == ' ')
|
|
*ep++ = '\0';
|
|
roff_word_alloc(r->man, ln, sp - buf->buf, sp);
|
|
}
|
|
|
|
n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
|
|
r->man->last = n;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_als(ROFF_ARGS)
|
|
{
|
|
char *oldn, *newn, *end, *value;
|
|
size_t oldsz, newsz, valsz;
|
|
|
|
newn = oldn = buf->buf + pos;
|
|
if (*newn == '\0')
|
|
return ROFF_IGN;
|
|
|
|
newsz = roff_getname(r, &oldn, ln, pos);
|
|
if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
|
|
return ROFF_IGN;
|
|
|
|
end = oldn;
|
|
oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
|
|
if (oldsz == 0)
|
|
return ROFF_IGN;
|
|
|
|
valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
|
|
(int)oldsz, oldn);
|
|
roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
|
|
roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
|
|
free(value);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/*
|
|
* The .break request only makes sense inside conditionals,
|
|
* and that case is already handled in roff_cond_sub().
|
|
*/
|
|
static int
|
|
roff_break(ROFF_ARGS)
|
|
{
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_cc(ROFF_ARGS)
|
|
{
|
|
const char *p;
|
|
|
|
p = buf->buf + pos;
|
|
|
|
if (*p == '\0' || (r->control = *p++) == '.')
|
|
r->control = '\0';
|
|
|
|
if (*p != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_EXCESS,
|
|
ln, p - buf->buf, "cc ... %s", p);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_char(ROFF_ARGS)
|
|
{
|
|
const char *p, *kp, *vp;
|
|
size_t ksz, vsz;
|
|
int font;
|
|
|
|
/* Parse the character to be replaced. */
|
|
|
|
kp = buf->buf + pos;
|
|
p = kp + 1;
|
|
if (*kp == '\0' || (*kp == '\\' &&
|
|
mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
|
|
(*p != ' ' && *p != '\0')) {
|
|
mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
|
|
return ROFF_IGN;
|
|
}
|
|
ksz = p - kp;
|
|
while (*p == ' ')
|
|
p++;
|
|
|
|
/*
|
|
* If the replacement string contains a font escape sequence,
|
|
* we have to restore the font at the end.
|
|
*/
|
|
|
|
vp = p;
|
|
vsz = strlen(p);
|
|
font = 0;
|
|
while (*p != '\0') {
|
|
if (*p++ != '\\')
|
|
continue;
|
|
switch (mandoc_escape(&p, NULL, NULL)) {
|
|
case ESCAPE_FONT:
|
|
case ESCAPE_FONTROMAN:
|
|
case ESCAPE_FONTITALIC:
|
|
case ESCAPE_FONTBOLD:
|
|
case ESCAPE_FONTBI:
|
|
case ESCAPE_FONTCR:
|
|
case ESCAPE_FONTCB:
|
|
case ESCAPE_FONTCI:
|
|
case ESCAPE_FONTPREV:
|
|
font++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
if (font > 1)
|
|
mandoc_msg(MANDOCERR_CHAR_FONT,
|
|
ln, (int)(vp - buf->buf), "%s", vp);
|
|
|
|
/*
|
|
* Approximate the effect of .char using the .tr tables.
|
|
* XXX In groff, .char and .tr interact differently.
|
|
*/
|
|
|
|
if (ksz == 1) {
|
|
if (r->xtab == NULL)
|
|
r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
|
|
assert((unsigned int)*kp < 128);
|
|
free(r->xtab[(int)*kp].p);
|
|
r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
|
|
"%s%s", vp, font ? "\fP" : "");
|
|
} else {
|
|
roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
|
|
if (font)
|
|
roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
|
|
}
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_ec(ROFF_ARGS)
|
|
{
|
|
const char *p;
|
|
|
|
p = buf->buf + pos;
|
|
if (*p == '\0')
|
|
r->escape = '\\';
|
|
else {
|
|
r->escape = *p;
|
|
if (*++p != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
|
|
(int)(p - buf->buf), "ec ... %s", p);
|
|
}
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_eo(ROFF_ARGS)
|
|
{
|
|
r->escape = '\0';
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_SKIP,
|
|
ln, pos, "eo %s", buf->buf + pos);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_mc(ROFF_ARGS)
|
|
{
|
|
struct roff_node *n;
|
|
char *cp;
|
|
|
|
/* Parse the first argument. */
|
|
|
|
cp = buf->buf + pos;
|
|
if (*cp != '\0')
|
|
cp++;
|
|
if (buf->buf[pos] == '\\') {
|
|
switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
|
|
case ESCAPE_SPECIAL:
|
|
case ESCAPE_UNICODE:
|
|
case ESCAPE_NUMBERED:
|
|
break;
|
|
default:
|
|
*cp = '\0';
|
|
mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
|
|
"mc %s", buf->buf + pos);
|
|
buf->buf[pos] = '\0';
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Ignore additional arguments. */
|
|
|
|
while (*cp == ' ')
|
|
*cp++ = '\0';
|
|
if (*cp != '\0') {
|
|
mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
|
|
"mc ... %s", cp);
|
|
*cp = '\0';
|
|
}
|
|
|
|
/* Create the .mc node. */
|
|
|
|
roff_elem_alloc(r->man, ln, ppos, tok);
|
|
n = r->man->last;
|
|
if (buf->buf[pos] != '\0')
|
|
roff_word_alloc(r->man, ln, pos, buf->buf + pos);
|
|
n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
|
|
r->man->last = n;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_nop(ROFF_ARGS)
|
|
{
|
|
while (buf->buf[pos] == ' ')
|
|
pos++;
|
|
*offs = pos;
|
|
return ROFF_RERUN;
|
|
}
|
|
|
|
static int
|
|
roff_tr(ROFF_ARGS)
|
|
{
|
|
const char *p, *first, *second;
|
|
size_t fsz, ssz;
|
|
|
|
p = buf->buf + pos;
|
|
|
|
if (*p == '\0') {
|
|
mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
while (*p != '\0') {
|
|
fsz = ssz = 1;
|
|
|
|
first = p++;
|
|
if (*first == '\\') {
|
|
if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
|
|
return ROFF_IGN;
|
|
fsz = (size_t)(p - first);
|
|
}
|
|
|
|
second = p++;
|
|
if (*second == '\\') {
|
|
if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
|
|
return ROFF_IGN;
|
|
ssz = (size_t)(p - second);
|
|
} else if (*second == '\0') {
|
|
mandoc_msg(MANDOCERR_TR_ODD, ln,
|
|
(int)(first - buf->buf), "tr %s", first);
|
|
second = " ";
|
|
p--;
|
|
}
|
|
|
|
if (fsz > 1) {
|
|
roff_setstrn(&r->xmbtab, first, fsz,
|
|
second, ssz, 0);
|
|
continue;
|
|
}
|
|
|
|
if (r->xtab == NULL)
|
|
r->xtab = mandoc_calloc(128,
|
|
sizeof(struct roffstr));
|
|
|
|
free(r->xtab[(int)*first].p);
|
|
r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
|
|
r->xtab[(int)*first].sz = ssz;
|
|
}
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/*
|
|
* Implementation of the .return request.
|
|
* There is no need to call roff_userret() from here.
|
|
* The read module will call that after rewinding the reader stack
|
|
* to the place from where the current macro was called.
|
|
*/
|
|
static int
|
|
roff_return(ROFF_ARGS)
|
|
{
|
|
if (r->mstackpos >= 0)
|
|
return ROFF_IGN | ROFF_USERRET;
|
|
|
|
mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_rn(ROFF_ARGS)
|
|
{
|
|
const char *value;
|
|
char *oldn, *newn, *end;
|
|
size_t oldsz, newsz;
|
|
int deftype;
|
|
|
|
oldn = newn = buf->buf + pos;
|
|
if (*oldn == '\0')
|
|
return ROFF_IGN;
|
|
|
|
oldsz = roff_getname(r, &newn, ln, pos);
|
|
if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
|
|
return ROFF_IGN;
|
|
|
|
end = newn;
|
|
newsz = roff_getname(r, &end, ln, newn - buf->buf);
|
|
if (newsz == 0)
|
|
return ROFF_IGN;
|
|
|
|
deftype = ROFFDEF_ANY;
|
|
value = roff_getstrn(r, oldn, oldsz, &deftype);
|
|
switch (deftype) {
|
|
case ROFFDEF_USER:
|
|
roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
|
|
roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
|
|
roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
|
|
break;
|
|
case ROFFDEF_PRE:
|
|
roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
|
|
roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
|
|
break;
|
|
case ROFFDEF_REN:
|
|
roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
|
|
roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
|
|
roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
|
|
break;
|
|
case ROFFDEF_STD:
|
|
roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
|
|
roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
|
|
break;
|
|
default:
|
|
roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
|
|
roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
|
|
break;
|
|
}
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_shift(ROFF_ARGS)
|
|
{
|
|
struct mctx *ctx;
|
|
int argpos, levels, i;
|
|
|
|
argpos = pos;
|
|
levels = 1;
|
|
if (buf->buf[pos] != '\0' &&
|
|
roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
|
|
mandoc_msg(MANDOCERR_CE_NONUM,
|
|
ln, pos, "shift %s", buf->buf + pos);
|
|
levels = 1;
|
|
}
|
|
if (r->mstackpos < 0) {
|
|
mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
|
|
return ROFF_IGN;
|
|
}
|
|
ctx = r->mstack + r->mstackpos;
|
|
if (levels > ctx->argc) {
|
|
mandoc_msg(MANDOCERR_SHIFT,
|
|
ln, argpos, "%d, but max is %d", levels, ctx->argc);
|
|
levels = ctx->argc;
|
|
}
|
|
if (levels < 0) {
|
|
mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
|
|
levels = 0;
|
|
}
|
|
if (levels == 0)
|
|
return ROFF_IGN;
|
|
for (i = 0; i < levels; i++)
|
|
free(ctx->argv[i]);
|
|
ctx->argc -= levels;
|
|
for (i = 0; i < ctx->argc; i++)
|
|
ctx->argv[i] = ctx->argv[i + levels];
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_so(ROFF_ARGS)
|
|
{
|
|
char *name, *cp;
|
|
|
|
name = buf->buf + pos;
|
|
mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
|
|
|
|
/*
|
|
* Handle `so'. Be EXTREMELY careful, as we shouldn't be
|
|
* opening anything that's not in our cwd or anything beneath
|
|
* it. Thus, explicitly disallow traversing up the file-system
|
|
* or using absolute paths.
|
|
*/
|
|
|
|
if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
|
|
mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
|
|
buf->sz = mandoc_asprintf(&cp,
|
|
".sp\nSee the file %s.\n.sp", name) + 1;
|
|
free(buf->buf);
|
|
buf->buf = cp;
|
|
*offs = 0;
|
|
return ROFF_REPARSE;
|
|
}
|
|
|
|
*offs = pos;
|
|
return ROFF_SO;
|
|
}
|
|
|
|
/* --- user defined strings and macros ------------------------------------ */
|
|
|
|
static int
|
|
roff_userdef(ROFF_ARGS)
|
|
{
|
|
struct mctx *ctx;
|
|
char *arg, *ap, *dst, *src;
|
|
size_t sz;
|
|
|
|
/* If the macro is empty, ignore it altogether. */
|
|
|
|
if (*r->current_string == '\0')
|
|
return ROFF_IGN;
|
|
|
|
/* Initialize a new macro stack context. */
|
|
|
|
if (++r->mstackpos == r->mstacksz) {
|
|
r->mstack = mandoc_recallocarray(r->mstack,
|
|
r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
|
|
r->mstacksz += 8;
|
|
}
|
|
ctx = r->mstack + r->mstackpos;
|
|
ctx->argc = 0;
|
|
|
|
/*
|
|
* Collect pointers to macro argument strings,
|
|
* NUL-terminating them and escaping quotes.
|
|
*/
|
|
|
|
src = buf->buf + pos;
|
|
while (*src != '\0') {
|
|
if (ctx->argc == ctx->argsz) {
|
|
ctx->argsz += 8;
|
|
ctx->argv = mandoc_reallocarray(ctx->argv,
|
|
ctx->argsz, sizeof(*ctx->argv));
|
|
}
|
|
arg = roff_getarg(r, &src, ln, &pos);
|
|
sz = 1; /* For the terminating NUL. */
|
|
for (ap = arg; *ap != '\0'; ap++)
|
|
sz += *ap == '"' ? 4 : 1;
|
|
ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
|
|
for (ap = arg; *ap != '\0'; ap++) {
|
|
if (*ap == '"') {
|
|
memcpy(dst, "\\(dq", 4);
|
|
dst += 4;
|
|
} else
|
|
*dst++ = *ap;
|
|
}
|
|
*dst = '\0';
|
|
free(arg);
|
|
}
|
|
|
|
/* Replace the macro invocation by the macro definition. */
|
|
|
|
free(buf->buf);
|
|
buf->buf = mandoc_strdup(r->current_string);
|
|
buf->sz = strlen(buf->buf) + 1;
|
|
*offs = 0;
|
|
|
|
return buf->buf[buf->sz - 2] == '\n' ?
|
|
ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
|
|
}
|
|
|
|
/*
|
|
* Calling a high-level macro that was renamed with .rn.
|
|
* r->current_string has already been set up by roff_parse().
|
|
*/
|
|
static int
|
|
roff_renamed(ROFF_ARGS)
|
|
{
|
|
char *nbuf;
|
|
|
|
buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
|
|
buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
|
|
free(buf->buf);
|
|
buf->buf = nbuf;
|
|
*offs = 0;
|
|
return ROFF_CONT;
|
|
}
|
|
|
|
/*
|
|
* Measure the length in bytes of the roff identifier at *cpp
|
|
* and advance the pointer to the next word.
|
|
*/
|
|
static size_t
|
|
roff_getname(struct roff *r, char **cpp, int ln, int pos)
|
|
{
|
|
char *name, *cp;
|
|
int namesz, inam, iend;
|
|
|
|
name = *cpp;
|
|
if (*name == '\0')
|
|
return 0;
|
|
|
|
/* Advance cp to the byte after the end of the name. */
|
|
|
|
cp = name;
|
|
namesz = 0;
|
|
for (;;) {
|
|
if (*cp == '\0')
|
|
break;
|
|
if (*cp == ' ' || *cp == '\t') {
|
|
cp++;
|
|
break;
|
|
}
|
|
if (*cp != '\\') {
|
|
if (name + namesz < cp) {
|
|
name[namesz] = *cp;
|
|
*cp = ' ';
|
|
}
|
|
namesz++;
|
|
cp++;
|
|
continue;
|
|
}
|
|
if (cp[1] == '{' || cp[1] == '}')
|
|
break;
|
|
if (roff_escape(cp, 0, 0, NULL, &inam,
|
|
NULL, NULL, &iend) != ESCAPE_UNDEF) {
|
|
mandoc_msg(MANDOCERR_NAMESC, ln, pos,
|
|
"%.*s%.*s", namesz, name, iend, cp);
|
|
cp += iend;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* In an identifier, \\, \., \G and so on
|
|
* are reduced to \, ., G and so on,
|
|
* vaguely similar to copy mode.
|
|
*/
|
|
|
|
name[namesz++] = cp[inam];
|
|
while (iend--) {
|
|
if (cp >= name + namesz)
|
|
*cp = ' ';
|
|
cp++;
|
|
}
|
|
}
|
|
|
|
/* Read past spaces. */
|
|
|
|
while (*cp == ' ')
|
|
cp++;
|
|
|
|
*cpp = cp;
|
|
return namesz;
|
|
}
|
|
|
|
/*
|
|
* Store *string into the user-defined string called *name.
|
|
* To clear an existing entry, call with (*r, *name, NULL, 0).
|
|
* append == 0: replace mode
|
|
* append == 1: single-line append mode
|
|
* append == 2: multiline append mode, append '\n' after each call
|
|
*/
|
|
static void
|
|
roff_setstr(struct roff *r, const char *name, const char *string,
|
|
int append)
|
|
{
|
|
size_t namesz;
|
|
|
|
namesz = strlen(name);
|
|
roff_setstrn(&r->strtab, name, namesz, string,
|
|
string ? strlen(string) : 0, append);
|
|
roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
|
|
}
|
|
|
|
static void
|
|
roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
|
|
const char *string, size_t stringsz, int append)
|
|
{
|
|
struct roffkv *n;
|
|
char *c;
|
|
int i;
|
|
size_t oldch, newch;
|
|
|
|
/* Search for an existing string with the same name. */
|
|
n = *r;
|
|
|
|
while (n && (namesz != n->key.sz ||
|
|
strncmp(n->key.p, name, namesz)))
|
|
n = n->next;
|
|
|
|
if (NULL == n) {
|
|
/* Create a new string table entry. */
|
|
n = mandoc_malloc(sizeof(struct roffkv));
|
|
n->key.p = mandoc_strndup(name, namesz);
|
|
n->key.sz = namesz;
|
|
n->val.p = NULL;
|
|
n->val.sz = 0;
|
|
n->next = *r;
|
|
*r = n;
|
|
} else if (0 == append) {
|
|
free(n->val.p);
|
|
n->val.p = NULL;
|
|
n->val.sz = 0;
|
|
}
|
|
|
|
if (NULL == string)
|
|
return;
|
|
|
|
/*
|
|
* One additional byte for the '\n' in multiline mode,
|
|
* and one for the terminating '\0'.
|
|
*/
|
|
newch = stringsz + (1 < append ? 2u : 1u);
|
|
|
|
if (NULL == n->val.p) {
|
|
n->val.p = mandoc_malloc(newch);
|
|
*n->val.p = '\0';
|
|
oldch = 0;
|
|
} else {
|
|
oldch = n->val.sz;
|
|
n->val.p = mandoc_realloc(n->val.p, oldch + newch);
|
|
}
|
|
|
|
/* Skip existing content in the destination buffer. */
|
|
c = n->val.p + (int)oldch;
|
|
|
|
/* Append new content to the destination buffer. */
|
|
i = 0;
|
|
while (i < (int)stringsz) {
|
|
/*
|
|
* Rudimentary roff copy mode:
|
|
* Handle escaped backslashes.
|
|
*/
|
|
if ('\\' == string[i] && '\\' == string[i + 1])
|
|
i++;
|
|
*c++ = string[i++];
|
|
}
|
|
|
|
/* Append terminating bytes. */
|
|
if (1 < append)
|
|
*c++ = '\n';
|
|
|
|
*c = '\0';
|
|
n->val.sz = (int)(c - n->val.p);
|
|
}
|
|
|
|
static const char *
|
|
roff_getstrn(struct roff *r, const char *name, size_t len,
|
|
int *deftype)
|
|
{
|
|
const struct roffkv *n;
|
|
int found, i;
|
|
enum roff_tok tok;
|
|
|
|
found = 0;
|
|
for (n = r->strtab; n != NULL; n = n->next) {
|
|
if (strncmp(name, n->key.p, len) != 0 ||
|
|
n->key.p[len] != '\0' || n->val.p == NULL)
|
|
continue;
|
|
if (*deftype & ROFFDEF_USER) {
|
|
*deftype = ROFFDEF_USER;
|
|
return n->val.p;
|
|
} else {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
for (n = r->rentab; n != NULL; n = n->next) {
|
|
if (strncmp(name, n->key.p, len) != 0 ||
|
|
n->key.p[len] != '\0' || n->val.p == NULL)
|
|
continue;
|
|
if (*deftype & ROFFDEF_REN) {
|
|
*deftype = ROFFDEF_REN;
|
|
return n->val.p;
|
|
} else {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
for (i = 0; i < PREDEFS_MAX; i++) {
|
|
if (strncmp(name, predefs[i].name, len) != 0 ||
|
|
predefs[i].name[len] != '\0')
|
|
continue;
|
|
if (*deftype & ROFFDEF_PRE) {
|
|
*deftype = ROFFDEF_PRE;
|
|
return predefs[i].str;
|
|
} else {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (r->man->meta.macroset != MACROSET_MAN) {
|
|
for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
|
|
if (strncmp(name, roff_name[tok], len) != 0 ||
|
|
roff_name[tok][len] != '\0')
|
|
continue;
|
|
if (*deftype & ROFFDEF_STD) {
|
|
*deftype = ROFFDEF_STD;
|
|
return NULL;
|
|
} else {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (r->man->meta.macroset != MACROSET_MDOC) {
|
|
for (tok = MAN_TH; tok < MAN_MAX; tok++) {
|
|
if (strncmp(name, roff_name[tok], len) != 0 ||
|
|
roff_name[tok][len] != '\0')
|
|
continue;
|
|
if (*deftype & ROFFDEF_STD) {
|
|
*deftype = ROFFDEF_STD;
|
|
return NULL;
|
|
} else {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (found == 0 && *deftype != ROFFDEF_ANY) {
|
|
if (*deftype & ROFFDEF_REN) {
|
|
/*
|
|
* This might still be a request,
|
|
* so do not treat it as undefined yet.
|
|
*/
|
|
*deftype = ROFFDEF_UNDEF;
|
|
return NULL;
|
|
}
|
|
|
|
/* Using an undefined string defines it to be empty. */
|
|
|
|
roff_setstrn(&r->strtab, name, len, "", 0, 0);
|
|
roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
|
|
}
|
|
|
|
*deftype = 0;
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
roff_freestr(struct roffkv *r)
|
|
{
|
|
struct roffkv *n, *nn;
|
|
|
|
for (n = r; n; n = nn) {
|
|
free(n->key.p);
|
|
free(n->val.p);
|
|
nn = n->next;
|
|
free(n);
|
|
}
|
|
}
|
|
|
|
/* --- accessors and utility functions ------------------------------------ */
|
|
|
|
/*
|
|
* Duplicate an input string, making the appropriate character
|
|
* conversations (as stipulated by `tr') along the way.
|
|
* Returns a heap-allocated string with all the replacements made.
|
|
*/
|
|
char *
|
|
roff_strdup(const struct roff *r, const char *p)
|
|
{
|
|
const struct roffkv *cp;
|
|
char *res;
|
|
const char *pp;
|
|
size_t ssz, sz;
|
|
enum mandoc_esc esc;
|
|
|
|
if (NULL == r->xmbtab && NULL == r->xtab)
|
|
return mandoc_strdup(p);
|
|
else if ('\0' == *p)
|
|
return mandoc_strdup("");
|
|
|
|
/*
|
|
* Step through each character looking for term matches
|
|
* (remember that a `tr' can be invoked with an escape, which is
|
|
* a glyph but the escape is multi-character).
|
|
* We only do this if the character hash has been initialised
|
|
* and the string is >0 length.
|
|
*/
|
|
|
|
res = NULL;
|
|
ssz = 0;
|
|
|
|
while ('\0' != *p) {
|
|
assert((unsigned int)*p < 128);
|
|
if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
|
|
sz = r->xtab[(int)*p].sz;
|
|
res = mandoc_realloc(res, ssz + sz + 1);
|
|
memcpy(res + ssz, r->xtab[(int)*p].p, sz);
|
|
ssz += sz;
|
|
p++;
|
|
continue;
|
|
} else if ('\\' != *p) {
|
|
res = mandoc_realloc(res, ssz + 2);
|
|
res[ssz++] = *p++;
|
|
continue;
|
|
}
|
|
|
|
/* Search for term matches. */
|
|
for (cp = r->xmbtab; cp; cp = cp->next)
|
|
if (0 == strncmp(p, cp->key.p, cp->key.sz))
|
|
break;
|
|
|
|
if (NULL != cp) {
|
|
/*
|
|
* A match has been found.
|
|
* Append the match to the array and move
|
|
* forward by its keysize.
|
|
*/
|
|
res = mandoc_realloc(res,
|
|
ssz + cp->val.sz + 1);
|
|
memcpy(res + ssz, cp->val.p, cp->val.sz);
|
|
ssz += cp->val.sz;
|
|
p += (int)cp->key.sz;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Handle escapes carefully: we need to copy
|
|
* over just the escape itself, or else we might
|
|
* do replacements within the escape itself.
|
|
* Make sure to pass along the bogus string.
|
|
*/
|
|
pp = p++;
|
|
esc = mandoc_escape(&p, NULL, NULL);
|
|
if (ESCAPE_ERROR == esc) {
|
|
sz = strlen(pp);
|
|
res = mandoc_realloc(res, ssz + sz + 1);
|
|
memcpy(res + ssz, pp, sz);
|
|
break;
|
|
}
|
|
/*
|
|
* We bail out on bad escapes.
|
|
* No need to warn: we already did so when
|
|
* roff_expand() was called.
|
|
*/
|
|
sz = (int)(p - pp);
|
|
res = mandoc_realloc(res, ssz + sz + 1);
|
|
memcpy(res + ssz, pp, sz);
|
|
ssz += sz;
|
|
}
|
|
|
|
res[(int)ssz] = '\0';
|
|
return res;
|
|
}
|
|
|
|
int
|
|
roff_getformat(const struct roff *r)
|
|
{
|
|
|
|
return r->format;
|
|
}
|
|
|
|
/*
|
|
* Find out whether a line is a macro line or not.
|
|
* If it is, adjust the current position and return one; if it isn't,
|
|
* return zero and don't change the current position.
|
|
* If the control character has been set with `.cc', then let that grain
|
|
* precedence.
|
|
* This is slightly contrary to groff, where using the non-breaking
|
|
* control character when `cc' has been invoked will cause the
|
|
* non-breaking macro contents to be printed verbatim.
|
|
*/
|
|
int
|
|
roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
|
|
{
|
|
int pos;
|
|
|
|
pos = *ppos;
|
|
|
|
if (r->control != '\0' && cp[pos] == r->control)
|
|
pos++;
|
|
else if (r->control != '\0')
|
|
return 0;
|
|
else if ('\\' == cp[pos] && '.' == cp[pos + 1])
|
|
pos += 2;
|
|
else if ('.' == cp[pos] || '\'' == cp[pos])
|
|
pos++;
|
|
else
|
|
return 0;
|
|
|
|
while (' ' == cp[pos] || '\t' == cp[pos])
|
|
pos++;
|
|
|
|
*ppos = pos;
|
|
return 1;
|
|
}
|