2262 lines
47 KiB
C
2262 lines
47 KiB
C
/* $OpenBSD: vi.c,v 1.60 2021/03/12 02:10:25 millert Exp $ */
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/*
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* vi command editing
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* written by John Rochester (initially for nsh)
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* bludgeoned to fit pdksh by Larry Bouzane, Jeff Sparkes & Eric Gisin
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*
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*/
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#include "config.h"
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#ifdef VI
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#include <sys/stat.h> /* completion */
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef SMALL
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# include <term.h>
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# include <curses.h>
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#endif
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#include "sh.h"
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#include "edit.h"
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#undef CTRL
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#define CTRL(x) ((x) & 0x1F) /* ASCII */
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struct edstate {
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char *cbuf; /* main buffer to build the command line */
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int cbufsize; /* number of bytes allocated for cbuf */
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int linelen; /* current number of bytes in cbuf */
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int winleft; /* first byte# in cbuf to be displayed */
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int cursor; /* byte# in cbuf having the cursor */
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};
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static int vi_hook(int);
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static void vi_reset(char *, size_t);
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static int nextstate(int);
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static int vi_insert(int);
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static int vi_cmd(int, const char *);
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static int domove(int, const char *, int);
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static int redo_insert(int);
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static void yank_range(int, int);
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static int bracktype(int);
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static void save_cbuf(void);
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static void restore_cbuf(void);
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static void edit_reset(char *, size_t);
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static int putbuf(const char *, int, int);
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static void del_range(int, int);
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static int findch(int, int, int, int);
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static int forwword(int);
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static int backword(int);
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static int endword(int);
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static int Forwword(int);
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static int Backword(int);
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static int Endword(int);
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static int grabhist(int, int);
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static int grabsearch(int, int, int, char *);
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static void do_clear_screen(void);
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static void redraw_line(int, int);
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static void refresh_line(int);
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static int outofwin(void);
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static void rewindow(void);
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static int newcol(int, int);
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static void display(char *, char *, int);
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static void ed_mov_opt(int, char *);
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static int expand_word(int);
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static int complete_word(int, int);
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static int print_expansions(struct edstate *);
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static int char_len(int);
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static void x_vi_zotc(int);
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static void vi_pprompt(int);
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static void vi_error(void);
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static void vi_macro_reset(void);
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static int x_vi_putbuf(const char *, size_t);
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static int isu8cont(unsigned char);
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#define C_ 0x1 /* a valid command that isn't a M_, E_, U_ */
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#define M_ 0x2 /* movement command (h, l, etc.) */
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#define E_ 0x4 /* extended command (c, d, y) */
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#define X_ 0x8 /* long command (@, f, F, t, T, etc.) */
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#define U_ 0x10 /* an UN-undoable command (that isn't a M_) */
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#define B_ 0x20 /* bad command (^@) */
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#define Z_ 0x40 /* repeat count defaults to 0 (not 1) */
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#define S_ 0x80 /* search (/, ?) */
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#define is_bad(c) (classify[(c)&0x7f]&B_)
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#define is_cmd(c) (classify[(c)&0x7f]&(M_|E_|C_|U_))
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#define is_move(c) (classify[(c)&0x7f]&M_)
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#define is_extend(c) (classify[(c)&0x7f]&E_)
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#define is_long(c) (classify[(c)&0x7f]&X_)
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#define is_undoable(c) (!(classify[(c)&0x7f]&U_))
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#define is_srch(c) (classify[(c)&0x7f]&S_)
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#define is_zerocount(c) (classify[(c)&0x7f]&Z_)
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const unsigned char classify[128] = {
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/* 0 1 2 3 4 5 6 7 */
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/* 0 ^@ ^A ^B ^C ^D ^E ^F ^G */
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B_, 0, 0, 0, 0, C_|U_, C_|Z_, 0,
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/* 01 ^H ^I ^J ^K ^L ^M ^N ^O */
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M_, C_|Z_, 0, 0, C_|U_, 0, C_, 0,
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/* 02 ^P ^Q ^R ^S ^T ^U ^V ^W */
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C_, 0, C_|U_, 0, 0, 0, C_, 0,
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/* 03 ^X ^Y ^Z ^[ ^\ ^] ^^ ^_ */
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C_, 0, 0, C_|Z_, 0, 0, 0, 0,
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/* 04 <space> ! " # $ % & ' */
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M_, 0, 0, C_, M_, M_, 0, 0,
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/* 05 ( ) * + , - . / */
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0, 0, C_, C_, M_, C_, 0, C_|S_,
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/* 06 0 1 2 3 4 5 6 7 */
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M_, 0, 0, 0, 0, 0, 0, 0,
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/* 07 8 9 : ; < = > ? */
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0, 0, 0, M_, 0, C_, 0, C_|S_,
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/* 010 @ A B C D E F G */
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C_|X_, C_, M_, C_, C_, M_, M_|X_, C_|U_|Z_,
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/* 011 H I J K L M N O */
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0, C_, 0, 0, 0, 0, C_|U_, 0,
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/* 012 P Q R S T U V W */
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C_, 0, C_, C_, M_|X_, C_, 0, M_,
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/* 013 X Y Z [ \ ] ^ _ */
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C_, C_|U_, 0, 0, C_|Z_, 0, M_, C_|Z_,
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/* 014 ` a b c d e f g */
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0, C_, M_, E_, E_, M_, M_|X_, C_|Z_,
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/* 015 h i j k l m n o */
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M_, C_, C_|U_, C_|U_, M_, 0, C_|U_, 0,
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/* 016 p q r s t u v w */
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C_, 0, X_, C_, M_|X_, C_|U_, C_|U_|Z_,M_,
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/* 017 x y z { | } ~ ^? */
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C_, E_|U_, 0, 0, M_|Z_, 0, C_, 0
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};
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#define MAXVICMD 3
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#define SRCHLEN 40
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#define INSERT 1
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#define REPLACE 2
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#define VNORMAL 0 /* command, insert or replace mode */
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#define VARG1 1 /* digit prefix (first, eg, 5l) */
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#define VEXTCMD 2 /* cmd + movement (eg, cl) */
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#define VARG2 3 /* digit prefix (second, eg, 2c3l) */
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#define VXCH 4 /* f, F, t, T, @ */
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#define VFAIL 5 /* bad command */
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#define VCMD 6 /* single char command (eg, X) */
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#define VREDO 7 /* . */
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#define VLIT 8 /* ^V */
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#define VSEARCH 9 /* /, ? */
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static char undocbuf[LINE];
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static struct edstate *save_edstate(struct edstate *old);
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static void restore_edstate(struct edstate *old, struct edstate *new);
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static void free_edstate(struct edstate *old);
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static struct edstate ebuf;
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static struct edstate undobuf = { undocbuf, LINE, 0, 0, 0 };
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static struct edstate *es; /* current editor state */
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static struct edstate *undo;
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static char ibuf[LINE]; /* input buffer */
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static int first_insert; /* set when starting in insert mode */
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static int saved_inslen; /* saved inslen for first insert */
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static int inslen; /* length of input buffer */
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static int srchlen; /* number of bytes in search pattern */
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static char ybuf[LINE]; /* yank buffer */
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static int yanklen; /* length of yank buffer */
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static int fsavecmd = ' '; /* last find command */
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static int fsavech; /* character to find */
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static char lastcmd[MAXVICMD]; /* last non-move command */
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static int lastac; /* argcnt for lastcmd */
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static int lastsearch = ' '; /* last search command */
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static char srchpat[SRCHLEN]; /* last search pattern */
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static int insert; /* mode: INSERT, REPLACE, or 0 */
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static int hnum; /* position in history */
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static int ohnum; /* history line copied (after mod) */
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static int hlast; /* 1 past last position in history */
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static int modified; /* buffer has been "modified" */
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static int state;
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/* Information for keeping track of macros that are being expanded.
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* The format of buf is the alias contents followed by a null byte followed
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* by the name (letter) of the alias. The end of the buffer is marked by
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* a double null. The name of the alias is stored so recursive macros can
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* be detected.
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*/
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struct macro_state {
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unsigned char *p; /* current position in buf */
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unsigned char *buf; /* pointer to macro(s) being expanded */
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int len; /* how much data in buffer */
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};
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static struct macro_state macro;
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enum expand_mode { NONE, EXPAND, COMPLETE, PRINT };
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static enum expand_mode expanded = NONE;/* last input was expanded */
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int
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x_vi(char *buf, size_t len)
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{
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int c;
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vi_reset(buf, len > LINE ? LINE : len);
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vi_pprompt(1);
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x_flush();
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while (1) {
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if (macro.p) {
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c = (unsigned char)*macro.p++;
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/* end of current macro? */
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if (!c) {
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/* more macros left to finish? */
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if (*macro.p++)
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continue;
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/* must be the end of all the macros */
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vi_macro_reset();
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c = x_getc();
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}
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} else
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c = x_getc();
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if (c == -1)
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break;
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if (state != VLIT) {
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if (c == edchars.intr || c == edchars.quit) {
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/* pretend we got an interrupt */
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x_vi_zotc(c);
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x_flush();
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trapsig(c == edchars.intr ? SIGINT : SIGQUIT);
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x_mode(false);
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unwind(LSHELL);
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} else if (c == edchars.eof) {
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if (es->linelen == 0) {
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x_vi_zotc(edchars.eof);
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c = -1;
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break;
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}
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continue;
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}
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}
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if (vi_hook(c))
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break;
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x_flush();
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}
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x_putc('\r'); x_putc('\n'); x_flush();
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if (c == -1 || len <= (size_t)es->linelen)
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return -1;
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if (es->cbuf != buf)
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memmove(buf, es->cbuf, es->linelen);
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buf[es->linelen++] = '\n';
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return es->linelen;
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}
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static int
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vi_hook(int ch)
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{
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static char curcmd[MAXVICMD], locpat[SRCHLEN];
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static int cmdlen, argc1, argc2;
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switch (state) {
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case VNORMAL:
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if (insert != 0) {
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if (ch == CTRL('v')) {
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state = VLIT;
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ch = '^';
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}
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switch (vi_insert(ch)) {
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case -1:
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vi_error();
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state = VNORMAL;
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break;
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case 0:
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if (state == VLIT) {
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es->cursor--;
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refresh_line(0);
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} else
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refresh_line(insert != 0);
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break;
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case 1:
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return 1;
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}
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} else {
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if (ch == '\r' || ch == '\n')
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return 1;
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cmdlen = 0;
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argc1 = 0;
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if (ch >= '1' && ch <= '9') {
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argc1 = ch - '0';
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state = VARG1;
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} else {
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curcmd[cmdlen++] = ch;
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state = nextstate(ch);
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if (state == VSEARCH) {
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save_cbuf();
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es->cursor = 0;
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es->linelen = 0;
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if (ch == '/') {
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if (putbuf("/", 1, 0) != 0)
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return -1;
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} else if (putbuf("?", 1, 0) != 0)
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return -1;
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refresh_line(0);
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}
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}
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}
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break;
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case VLIT:
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if (is_bad(ch)) {
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del_range(es->cursor, es->cursor + 1);
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vi_error();
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} else
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es->cbuf[es->cursor++] = ch;
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refresh_line(1);
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state = VNORMAL;
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break;
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case VARG1:
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if (isdigit(ch))
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argc1 = argc1 * 10 + ch - '0';
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else {
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curcmd[cmdlen++] = ch;
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state = nextstate(ch);
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}
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break;
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case VEXTCMD:
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argc2 = 0;
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if (ch >= '1' && ch <= '9') {
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argc2 = ch - '0';
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state = VARG2;
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return 0;
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} else {
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curcmd[cmdlen++] = ch;
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if (ch == curcmd[0])
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state = VCMD;
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else if (is_move(ch))
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state = nextstate(ch);
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else
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state = VFAIL;
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}
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break;
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case VARG2:
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if (isdigit(ch))
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argc2 = argc2 * 10 + ch - '0';
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else {
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if (argc1 == 0)
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argc1 = argc2;
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else
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argc1 *= argc2;
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curcmd[cmdlen++] = ch;
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if (ch == curcmd[0])
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state = VCMD;
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else if (is_move(ch))
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state = nextstate(ch);
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else
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state = VFAIL;
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}
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break;
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case VXCH:
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if (ch == CTRL('['))
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state = VNORMAL;
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else {
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curcmd[cmdlen++] = ch;
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state = VCMD;
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}
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break;
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case VSEARCH:
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if (ch == '\r' || ch == '\n' /*|| ch == CTRL('[')*/ ) {
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restore_cbuf();
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/* Repeat last search? */
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if (srchlen == 0) {
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if (!srchpat[0]) {
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vi_error();
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state = VNORMAL;
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refresh_line(0);
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return 0;
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}
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} else {
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locpat[srchlen] = '\0';
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(void) strlcpy(srchpat, locpat, sizeof srchpat);
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}
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state = VCMD;
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} else if (ch == edchars.erase || ch == CTRL('h')) {
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if (srchlen != 0) {
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do {
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srchlen--;
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es->linelen -= char_len(
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(unsigned char)locpat[srchlen]);
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} while (srchlen > 0 &&
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isu8cont(locpat[srchlen]));
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es->cursor = es->linelen;
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refresh_line(0);
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return 0;
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}
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restore_cbuf();
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state = VNORMAL;
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refresh_line(0);
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} else if (ch == edchars.kill) {
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srchlen = 0;
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es->linelen = 1;
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es->cursor = 1;
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refresh_line(0);
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return 0;
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} else if (ch == edchars.werase) {
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struct edstate new_es, *save_es;
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int i;
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int n = srchlen;
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new_es.cursor = n;
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new_es.cbuf = locpat;
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save_es = es;
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es = &new_es;
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n = backword(1);
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es = save_es;
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for (i = srchlen; --i >= n; )
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es->linelen -= char_len((unsigned char)locpat[i]);
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srchlen = n;
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es->cursor = es->linelen;
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refresh_line(0);
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return 0;
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} else {
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if (srchlen == SRCHLEN - 1)
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vi_error();
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else {
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locpat[srchlen++] = ch;
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if ((ch & 0x80) && Flag(FVISHOW8)) {
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if (es->linelen + 2 > es->cbufsize)
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vi_error();
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es->cbuf[es->linelen++] = 'M';
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es->cbuf[es->linelen++] = '-';
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ch &= 0x7f;
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}
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if (ch < ' ' || ch == 0x7f) {
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if (es->linelen + 2 > es->cbufsize)
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vi_error();
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es->cbuf[es->linelen++] = '^';
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es->cbuf[es->linelen++] = ch ^ '@';
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} else {
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if (es->linelen >= es->cbufsize)
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vi_error();
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es->cbuf[es->linelen++] = ch;
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}
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es->cursor = es->linelen;
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refresh_line(0);
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}
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return 0;
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}
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break;
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}
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switch (state) {
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case VCMD:
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state = VNORMAL;
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switch (vi_cmd(argc1, curcmd)) {
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case -1:
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vi_error();
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refresh_line(0);
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break;
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case 0:
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if (insert != 0)
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inslen = 0;
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refresh_line(insert != 0);
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break;
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case 1:
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refresh_line(0);
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return 1;
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case 2:
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/* back from a 'v' command - don't redraw the screen */
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return 1;
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}
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break;
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case VREDO:
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state = VNORMAL;
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if (argc1 != 0)
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lastac = argc1;
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switch (vi_cmd(lastac, lastcmd)) {
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case -1:
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vi_error();
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refresh_line(0);
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break;
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case 0:
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if (insert != 0) {
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if (lastcmd[0] == 's' || lastcmd[0] == 'c' ||
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lastcmd[0] == 'C') {
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if (redo_insert(1) != 0)
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vi_error();
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} else {
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if (redo_insert(lastac) != 0)
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vi_error();
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}
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}
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refresh_line(0);
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break;
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case 1:
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refresh_line(0);
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return 1;
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case 2:
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/* back from a 'v' command - can't happen */
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break;
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}
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break;
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case VFAIL:
|
|
state = VNORMAL;
|
|
vi_error();
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
vi_reset(char *buf, size_t len)
|
|
{
|
|
state = VNORMAL;
|
|
ohnum = hnum = hlast = histnum(-1) + 1;
|
|
insert = INSERT;
|
|
saved_inslen = inslen;
|
|
first_insert = 1;
|
|
inslen = 0;
|
|
modified = 1;
|
|
vi_macro_reset();
|
|
edit_reset(buf, len);
|
|
}
|
|
|
|
static int
|
|
nextstate(int ch)
|
|
{
|
|
if (is_extend(ch))
|
|
return VEXTCMD;
|
|
else if (is_srch(ch))
|
|
return VSEARCH;
|
|
else if (is_long(ch))
|
|
return VXCH;
|
|
else if (ch == '.')
|
|
return VREDO;
|
|
else if (is_cmd(ch))
|
|
return VCMD;
|
|
else
|
|
return VFAIL;
|
|
}
|
|
|
|
static int
|
|
vi_insert(int ch)
|
|
{
|
|
int tcursor;
|
|
|
|
if (ch == edchars.erase || ch == CTRL('h')) {
|
|
if (insert == REPLACE) {
|
|
if (es->cursor == undo->cursor) {
|
|
vi_error();
|
|
return 0;
|
|
}
|
|
} else {
|
|
if (es->cursor == 0) {
|
|
/* x_putc(BEL); no annoying bell here */
|
|
return 0;
|
|
}
|
|
}
|
|
tcursor = es->cursor - 1;
|
|
while(tcursor > 0 && isu8cont(es->cbuf[tcursor]))
|
|
tcursor--;
|
|
if (insert == INSERT)
|
|
memmove(es->cbuf + tcursor, es->cbuf + es->cursor,
|
|
es->linelen - es->cursor);
|
|
if (insert == REPLACE && es->cursor < undo->linelen)
|
|
memcpy(es->cbuf + tcursor, undo->cbuf + tcursor,
|
|
es->cursor - tcursor);
|
|
else
|
|
es->linelen -= es->cursor - tcursor;
|
|
if (inslen < es->cursor - tcursor)
|
|
inslen = 0;
|
|
else
|
|
inslen -= es->cursor - tcursor;
|
|
es->cursor = tcursor;
|
|
expanded = NONE;
|
|
return 0;
|
|
}
|
|
if (ch == edchars.kill) {
|
|
if (es->cursor != 0) {
|
|
inslen = 0;
|
|
memmove(es->cbuf, &es->cbuf[es->cursor],
|
|
es->linelen - es->cursor);
|
|
es->linelen -= es->cursor;
|
|
es->cursor = 0;
|
|
}
|
|
expanded = NONE;
|
|
return 0;
|
|
}
|
|
if (ch == edchars.werase) {
|
|
if (es->cursor != 0) {
|
|
tcursor = backword(1);
|
|
memmove(&es->cbuf[tcursor], &es->cbuf[es->cursor],
|
|
es->linelen - es->cursor);
|
|
es->linelen -= es->cursor - tcursor;
|
|
if (inslen < es->cursor - tcursor)
|
|
inslen = 0;
|
|
else
|
|
inslen -= es->cursor - tcursor;
|
|
es->cursor = tcursor;
|
|
}
|
|
expanded = NONE;
|
|
return 0;
|
|
}
|
|
/* If any chars are entered before escape, trash the saved insert
|
|
* buffer (if user inserts & deletes char, ibuf gets trashed and
|
|
* we don't want to use it)
|
|
*/
|
|
if (first_insert && ch != CTRL('['))
|
|
saved_inslen = 0;
|
|
switch (ch) {
|
|
case '\0':
|
|
return -1;
|
|
|
|
case '\r':
|
|
case '\n':
|
|
return 1;
|
|
|
|
case CTRL('['):
|
|
expanded = NONE;
|
|
if (first_insert) {
|
|
first_insert = 0;
|
|
if (inslen == 0) {
|
|
inslen = saved_inslen;
|
|
return redo_insert(0);
|
|
}
|
|
lastcmd[0] = 'a';
|
|
lastac = 1;
|
|
}
|
|
if (lastcmd[0] == 's' || lastcmd[0] == 'c' ||
|
|
lastcmd[0] == 'C')
|
|
return redo_insert(0);
|
|
else
|
|
return redo_insert(lastac - 1);
|
|
|
|
/* { Begin nonstandard vi commands */
|
|
case CTRL('x'):
|
|
expand_word(0);
|
|
break;
|
|
|
|
case CTRL('f'):
|
|
complete_word(0, 0);
|
|
break;
|
|
|
|
case CTRL('e'):
|
|
print_expansions(es);
|
|
break;
|
|
|
|
case CTRL('l'):
|
|
do_clear_screen();
|
|
break;
|
|
|
|
case CTRL('r'):
|
|
redraw_line(1, 0);
|
|
break;
|
|
|
|
case CTRL('i'):
|
|
if (Flag(FVITABCOMPLETE)) {
|
|
complete_word(0, 0);
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
/* End nonstandard vi commands } */
|
|
|
|
default:
|
|
if (es->linelen >= es->cbufsize - 1)
|
|
return -1;
|
|
ibuf[inslen++] = ch;
|
|
if (insert == INSERT) {
|
|
memmove(&es->cbuf[es->cursor+1], &es->cbuf[es->cursor],
|
|
es->linelen - es->cursor);
|
|
es->linelen++;
|
|
}
|
|
es->cbuf[es->cursor++] = ch;
|
|
if (insert == REPLACE && es->cursor > es->linelen)
|
|
es->linelen++;
|
|
expanded = NONE;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
vi_cmd(int argcnt, const char *cmd)
|
|
{
|
|
int ncursor;
|
|
int cur, c1, c2, c3 = 0;
|
|
int any;
|
|
struct edstate *t;
|
|
|
|
if (argcnt == 0 && !is_zerocount(*cmd))
|
|
argcnt = 1;
|
|
|
|
if (is_move(*cmd)) {
|
|
if ((cur = domove(argcnt, cmd, 0)) >= 0) {
|
|
if (cur == es->linelen && cur != 0)
|
|
while (isu8cont(es->cbuf[--cur]))
|
|
continue;
|
|
es->cursor = cur;
|
|
} else
|
|
return -1;
|
|
} else {
|
|
/* Don't save state in middle of macro.. */
|
|
if (is_undoable(*cmd) && !macro.p) {
|
|
undo->winleft = es->winleft;
|
|
memmove(undo->cbuf, es->cbuf, es->linelen);
|
|
undo->linelen = es->linelen;
|
|
undo->cursor = es->cursor;
|
|
lastac = argcnt;
|
|
memmove(lastcmd, cmd, MAXVICMD);
|
|
}
|
|
switch (*cmd) {
|
|
|
|
case CTRL('l'):
|
|
do_clear_screen();
|
|
break;
|
|
|
|
case CTRL('r'):
|
|
redraw_line(1, 0);
|
|
break;
|
|
|
|
case '@':
|
|
{
|
|
static char alias[] = "_\0";
|
|
struct tbl *ap;
|
|
int olen, nlen;
|
|
char *p, *nbuf;
|
|
|
|
/* lookup letter in alias list... */
|
|
alias[1] = cmd[1];
|
|
ap = ktsearch(&aliases, alias, hash(alias));
|
|
if (!cmd[1] || !ap || !(ap->flag & ISSET))
|
|
return -1;
|
|
/* check if this is a recursive call... */
|
|
if ((p = (char *) macro.p))
|
|
while ((p = strchr(p, '\0')) && p[1])
|
|
if (*++p == cmd[1])
|
|
return -1;
|
|
/* insert alias into macro buffer */
|
|
nlen = strlen(ap->val.s) + 1;
|
|
olen = !macro.p ? 2 :
|
|
macro.len - (macro.p - macro.buf);
|
|
nbuf = alloc(nlen + 1 + olen, APERM);
|
|
memcpy(nbuf, ap->val.s, nlen);
|
|
nbuf[nlen++] = cmd[1];
|
|
if (macro.p) {
|
|
memcpy(nbuf + nlen, macro.p, olen);
|
|
afree(macro.buf, APERM);
|
|
nlen += olen;
|
|
} else {
|
|
nbuf[nlen++] = '\0';
|
|
nbuf[nlen++] = '\0';
|
|
}
|
|
macro.p = macro.buf = (unsigned char *) nbuf;
|
|
macro.len = nlen;
|
|
}
|
|
break;
|
|
|
|
case 'a':
|
|
modified = 1; hnum = hlast;
|
|
if (es->linelen != 0)
|
|
while (isu8cont(es->cbuf[++es->cursor]))
|
|
continue;
|
|
insert = INSERT;
|
|
break;
|
|
|
|
case 'A':
|
|
modified = 1; hnum = hlast;
|
|
del_range(0, 0);
|
|
es->cursor = es->linelen;
|
|
insert = INSERT;
|
|
break;
|
|
|
|
case 'S':
|
|
es->cursor = domove(1, "^", 1);
|
|
del_range(es->cursor, es->linelen);
|
|
modified = 1; hnum = hlast;
|
|
insert = INSERT;
|
|
break;
|
|
|
|
case 'Y':
|
|
cmd = "y$";
|
|
/* ahhhhhh... */
|
|
case 'c':
|
|
case 'd':
|
|
case 'y':
|
|
if (*cmd == cmd[1]) {
|
|
c1 = *cmd == 'c' ? domove(1, "^", 1) : 0;
|
|
c2 = es->linelen;
|
|
} else if (!is_move(cmd[1]))
|
|
return -1;
|
|
else {
|
|
if ((ncursor = domove(argcnt, &cmd[1], 1)) < 0)
|
|
return -1;
|
|
if (*cmd == 'c' &&
|
|
(cmd[1]=='w' || cmd[1]=='W') &&
|
|
!isspace((unsigned char)es->cbuf[es->cursor])) {
|
|
while (isspace(
|
|
(unsigned char)es->cbuf[--ncursor]))
|
|
;
|
|
ncursor++;
|
|
}
|
|
if (ncursor > es->cursor) {
|
|
c1 = es->cursor;
|
|
c2 = ncursor;
|
|
} else {
|
|
c1 = ncursor;
|
|
c2 = es->cursor;
|
|
if (cmd[1] == '%')
|
|
c2++;
|
|
}
|
|
}
|
|
if (*cmd != 'c' && c1 != c2)
|
|
yank_range(c1, c2);
|
|
if (*cmd != 'y') {
|
|
del_range(c1, c2);
|
|
es->cursor = c1;
|
|
}
|
|
if (*cmd == 'c') {
|
|
modified = 1; hnum = hlast;
|
|
insert = INSERT;
|
|
}
|
|
break;
|
|
|
|
case 'p':
|
|
modified = 1; hnum = hlast;
|
|
if (es->linelen != 0)
|
|
es->cursor++;
|
|
while (putbuf(ybuf, yanklen, 0) == 0 && --argcnt > 0)
|
|
;
|
|
if (es->cursor != 0)
|
|
es->cursor--;
|
|
if (argcnt != 0)
|
|
return -1;
|
|
break;
|
|
|
|
case 'P':
|
|
modified = 1; hnum = hlast;
|
|
any = 0;
|
|
while (putbuf(ybuf, yanklen, 0) == 0 && --argcnt > 0)
|
|
any = 1;
|
|
if (any && es->cursor != 0)
|
|
es->cursor--;
|
|
if (argcnt != 0)
|
|
return -1;
|
|
break;
|
|
|
|
case 'C':
|
|
modified = 1; hnum = hlast;
|
|
del_range(es->cursor, es->linelen);
|
|
insert = INSERT;
|
|
break;
|
|
|
|
case 'D':
|
|
yank_range(es->cursor, es->linelen);
|
|
del_range(es->cursor, es->linelen);
|
|
if (es->cursor != 0)
|
|
es->cursor--;
|
|
break;
|
|
|
|
case 'g':
|
|
if (!argcnt)
|
|
argcnt = hlast;
|
|
/* FALLTHROUGH */
|
|
case 'G':
|
|
if (!argcnt)
|
|
argcnt = 1;
|
|
else
|
|
argcnt = hlast - (source->line - argcnt);
|
|
if (grabhist(modified, argcnt - 1) < 0)
|
|
return -1;
|
|
else {
|
|
modified = 0;
|
|
hnum = argcnt - 1;
|
|
}
|
|
break;
|
|
|
|
case 'i':
|
|
modified = 1; hnum = hlast;
|
|
insert = INSERT;
|
|
break;
|
|
|
|
case 'I':
|
|
modified = 1; hnum = hlast;
|
|
es->cursor = domove(1, "^", 1);
|
|
insert = INSERT;
|
|
break;
|
|
|
|
case 'j':
|
|
case '+':
|
|
case CTRL('n'):
|
|
if (grabhist(modified, hnum + argcnt) < 0)
|
|
return -1;
|
|
else {
|
|
modified = 0;
|
|
hnum += argcnt;
|
|
}
|
|
break;
|
|
|
|
case 'k':
|
|
case '-':
|
|
case CTRL('p'):
|
|
if (grabhist(modified, hnum - argcnt) < 0)
|
|
return -1;
|
|
else {
|
|
modified = 0;
|
|
hnum -= argcnt;
|
|
}
|
|
break;
|
|
|
|
case 'r':
|
|
if (es->linelen == 0)
|
|
return -1;
|
|
modified = 1; hnum = hlast;
|
|
if (cmd[1] == 0)
|
|
vi_error();
|
|
else {
|
|
c1 = 0;
|
|
for (cur = es->cursor;
|
|
cur < es->linelen; cur++) {
|
|
if (!isu8cont(es->cbuf[cur]))
|
|
c1++;
|
|
if (c1 > argcnt)
|
|
break;
|
|
}
|
|
if (argcnt > c1)
|
|
return -1;
|
|
|
|
del_range(es->cursor, cur);
|
|
while (argcnt-- > 0)
|
|
putbuf(&cmd[1], 1, 0);
|
|
while (es->cursor > 0)
|
|
if (!isu8cont(es->cbuf[--es->cursor]))
|
|
break;
|
|
es->cbuf[es->linelen] = '\0';
|
|
}
|
|
break;
|
|
|
|
case 'R':
|
|
modified = 1; hnum = hlast;
|
|
insert = REPLACE;
|
|
break;
|
|
|
|
case 's':
|
|
if (es->linelen == 0)
|
|
return -1;
|
|
modified = 1; hnum = hlast;
|
|
for (cur = es->cursor; cur < es->linelen; cur++)
|
|
if (!isu8cont(es->cbuf[cur]))
|
|
if (argcnt-- == 0)
|
|
break;
|
|
del_range(es->cursor, cur);
|
|
insert = INSERT;
|
|
break;
|
|
|
|
case 'v':
|
|
if (es->linelen == 0 && argcnt == 0)
|
|
return -1;
|
|
if (!argcnt) {
|
|
if (modified) {
|
|
es->cbuf[es->linelen] = '\0';
|
|
source->line++;
|
|
histsave(source->line, es->cbuf, 1);
|
|
} else
|
|
argcnt = source->line + 1
|
|
- (hlast - hnum);
|
|
}
|
|
shf_snprintf(es->cbuf, es->cbufsize,
|
|
argcnt ? "%s %d" : "%s",
|
|
"fc -e ${VISUAL:-${EDITOR:-vi}} --",
|
|
argcnt);
|
|
es->linelen = strlen(es->cbuf);
|
|
return 2;
|
|
|
|
case 'x':
|
|
if (es->linelen == 0)
|
|
return -1;
|
|
modified = 1; hnum = hlast;
|
|
for (cur = es->cursor; cur < es->linelen; cur++)
|
|
if (!isu8cont(es->cbuf[cur]))
|
|
if (argcnt-- == 0)
|
|
break;
|
|
yank_range(es->cursor, cur);
|
|
del_range(es->cursor, cur);
|
|
break;
|
|
|
|
case 'X':
|
|
if (es->cursor == 0)
|
|
return -1;
|
|
modified = 1; hnum = hlast;
|
|
for (cur = es->cursor; cur > 0; cur--)
|
|
if (!isu8cont(es->cbuf[cur]))
|
|
if (argcnt-- == 0)
|
|
break;
|
|
yank_range(cur, es->cursor);
|
|
del_range(cur, es->cursor);
|
|
es->cursor = cur;
|
|
break;
|
|
|
|
case 'u':
|
|
t = es;
|
|
es = undo;
|
|
undo = t;
|
|
break;
|
|
|
|
case 'U':
|
|
if (!modified)
|
|
return -1;
|
|
if (grabhist(modified, ohnum) < 0)
|
|
return -1;
|
|
modified = 0;
|
|
hnum = ohnum;
|
|
break;
|
|
|
|
case '?':
|
|
if (hnum == hlast)
|
|
hnum = -1;
|
|
/* ahhh */
|
|
case '/':
|
|
c3 = 1;
|
|
srchlen = 0;
|
|
lastsearch = *cmd;
|
|
/* FALLTHROUGH */
|
|
case 'n':
|
|
case 'N':
|
|
if (lastsearch == ' ')
|
|
return -1;
|
|
if (lastsearch == '?')
|
|
c1 = 1;
|
|
else
|
|
c1 = 0;
|
|
if (*cmd == 'N')
|
|
c1 = !c1;
|
|
if ((c2 = grabsearch(modified, hnum,
|
|
c1, srchpat)) < 0) {
|
|
if (c3) {
|
|
restore_cbuf();
|
|
refresh_line(0);
|
|
}
|
|
return -1;
|
|
} else {
|
|
modified = 0;
|
|
hnum = c2;
|
|
ohnum = hnum;
|
|
}
|
|
break;
|
|
case '_': {
|
|
int inspace;
|
|
char *p, *sp;
|
|
|
|
if (histnum(-1) < 0)
|
|
return -1;
|
|
p = *histpos();
|
|
#define issp(c) (isspace((unsigned char)(c)) || (c) == '\n')
|
|
if (argcnt) {
|
|
while (*p && issp(*p))
|
|
p++;
|
|
while (*p && --argcnt) {
|
|
while (*p && !issp(*p))
|
|
p++;
|
|
while (*p && issp(*p))
|
|
p++;
|
|
}
|
|
if (!*p)
|
|
return -1;
|
|
sp = p;
|
|
} else {
|
|
sp = p;
|
|
inspace = 0;
|
|
while (*p) {
|
|
if (issp(*p))
|
|
inspace = 1;
|
|
else if (inspace) {
|
|
inspace = 0;
|
|
sp = p;
|
|
}
|
|
p++;
|
|
}
|
|
p = sp;
|
|
}
|
|
modified = 1; hnum = hlast;
|
|
if (es->cursor != es->linelen)
|
|
es->cursor++;
|
|
while (*p && !issp(*p)) {
|
|
argcnt++;
|
|
p++;
|
|
}
|
|
if (putbuf(" ", 1, 0) != 0)
|
|
argcnt = -1;
|
|
else if (putbuf(sp, argcnt, 0) != 0)
|
|
argcnt = -1;
|
|
if (argcnt < 0) {
|
|
if (es->cursor != 0)
|
|
es->cursor--;
|
|
return -1;
|
|
}
|
|
insert = INSERT;
|
|
}
|
|
break;
|
|
|
|
case '~': {
|
|
char *p;
|
|
unsigned char c;
|
|
int i;
|
|
|
|
if (es->linelen == 0)
|
|
return -1;
|
|
for (i = 0; i < argcnt; i++) {
|
|
p = &es->cbuf[es->cursor];
|
|
c = (unsigned char)*p;
|
|
if (islower(c)) {
|
|
modified = 1; hnum = hlast;
|
|
*p = toupper(c);
|
|
} else if (isupper(c)) {
|
|
modified = 1; hnum = hlast;
|
|
*p = tolower(c);
|
|
}
|
|
if (es->cursor < es->linelen - 1)
|
|
es->cursor++;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case '#':
|
|
{
|
|
int ret = x_do_comment(es->cbuf, es->cbufsize,
|
|
&es->linelen);
|
|
if (ret >= 0)
|
|
es->cursor = 0;
|
|
return ret;
|
|
}
|
|
|
|
case '=': /* at&t ksh */
|
|
case CTRL('e'): /* Nonstandard vi/ksh */
|
|
print_expansions(es);
|
|
break;
|
|
|
|
|
|
case CTRL('i'): /* Nonstandard vi/ksh */
|
|
if (!Flag(FVITABCOMPLETE))
|
|
return -1;
|
|
complete_word(1, argcnt);
|
|
break;
|
|
|
|
case CTRL('['): /* some annoying at&t ksh's */
|
|
if (!Flag(FVIESCCOMPLETE))
|
|
return -1;
|
|
case '\\': /* at&t ksh */
|
|
case CTRL('f'): /* Nonstandard vi/ksh */
|
|
complete_word(1, argcnt);
|
|
break;
|
|
|
|
|
|
case '*': /* at&t ksh */
|
|
case CTRL('x'): /* Nonstandard vi/ksh */
|
|
expand_word(1);
|
|
break;
|
|
}
|
|
if (insert == 0 && es->cursor >= es->linelen)
|
|
while (es->cursor > 0)
|
|
if (!isu8cont(es->cbuf[--es->cursor]))
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
domove(int argcnt, const char *cmd, int sub)
|
|
{
|
|
int bcount, i = 0, t;
|
|
int ncursor = 0;
|
|
|
|
switch (*cmd) {
|
|
|
|
case 'b':
|
|
case 'B':
|
|
if (!sub && es->cursor == 0)
|
|
return -1;
|
|
ncursor = (*cmd == 'b' ? backword : Backword)(argcnt);
|
|
break;
|
|
|
|
case 'e':
|
|
case 'E':
|
|
if (!sub && es->cursor + 1 >= es->linelen)
|
|
return -1;
|
|
ncursor = (*cmd == 'e' ? endword : Endword)(argcnt);
|
|
if (!sub)
|
|
while (isu8cont((unsigned char)es->cbuf[--ncursor]))
|
|
continue;
|
|
break;
|
|
|
|
case 'f':
|
|
case 'F':
|
|
case 't':
|
|
case 'T':
|
|
fsavecmd = *cmd;
|
|
fsavech = cmd[1];
|
|
/* drop through */
|
|
|
|
case ',':
|
|
case ';':
|
|
if (fsavecmd == ' ')
|
|
return -1;
|
|
i = fsavecmd == 'f' || fsavecmd == 'F';
|
|
t = fsavecmd > 'a';
|
|
if (*cmd == ',')
|
|
t = !t;
|
|
if ((ncursor = findch(fsavech, argcnt, t, i)) < 0)
|
|
return -1;
|
|
if (sub && t)
|
|
ncursor++;
|
|
break;
|
|
|
|
case 'h':
|
|
case CTRL('h'):
|
|
if (!sub && es->cursor == 0)
|
|
return -1;
|
|
for (ncursor = es->cursor; ncursor > 0; ncursor--)
|
|
if (!isu8cont(es->cbuf[ncursor]))
|
|
if (argcnt-- == 0)
|
|
break;
|
|
break;
|
|
|
|
case ' ':
|
|
case 'l':
|
|
if (!sub && es->cursor + 1 >= es->linelen)
|
|
return -1;
|
|
for (ncursor = es->cursor; ncursor < es->linelen; ncursor++)
|
|
if (!isu8cont(es->cbuf[ncursor]))
|
|
if (argcnt-- == 0)
|
|
break;
|
|
break;
|
|
|
|
case 'w':
|
|
case 'W':
|
|
if (!sub && es->cursor + 1 >= es->linelen)
|
|
return -1;
|
|
ncursor = (*cmd == 'w' ? forwword : Forwword)(argcnt);
|
|
break;
|
|
|
|
case '0':
|
|
ncursor = 0;
|
|
break;
|
|
|
|
case '^':
|
|
ncursor = 0;
|
|
while (ncursor < es->linelen - 1 &&
|
|
isspace((unsigned char)es->cbuf[ncursor]))
|
|
ncursor++;
|
|
break;
|
|
|
|
case '|':
|
|
ncursor = argcnt;
|
|
if (ncursor > es->linelen)
|
|
ncursor = es->linelen;
|
|
if (ncursor)
|
|
ncursor--;
|
|
while (isu8cont(es->cbuf[ncursor]))
|
|
ncursor--;
|
|
break;
|
|
|
|
case '$':
|
|
ncursor = es->linelen;
|
|
break;
|
|
|
|
case '%':
|
|
ncursor = es->cursor;
|
|
while (ncursor < es->linelen &&
|
|
(i = bracktype(es->cbuf[ncursor])) == 0)
|
|
ncursor++;
|
|
if (ncursor == es->linelen)
|
|
return -1;
|
|
bcount = 1;
|
|
do {
|
|
if (i > 0) {
|
|
if (++ncursor >= es->linelen)
|
|
return -1;
|
|
} else {
|
|
if (--ncursor < 0)
|
|
return -1;
|
|
}
|
|
t = bracktype(es->cbuf[ncursor]);
|
|
if (t == i)
|
|
bcount++;
|
|
else if (t == -i)
|
|
bcount--;
|
|
} while (bcount != 0);
|
|
if (sub && i > 0)
|
|
ncursor++;
|
|
break;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
return ncursor;
|
|
}
|
|
|
|
static int
|
|
redo_insert(int count)
|
|
{
|
|
while (count-- > 0)
|
|
if (putbuf(ibuf, inslen, insert==REPLACE) != 0)
|
|
return -1;
|
|
if (es->cursor > 0)
|
|
while (isu8cont(es->cbuf[--es->cursor]))
|
|
continue;
|
|
insert = 0;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
yank_range(int a, int b)
|
|
{
|
|
yanklen = b - a;
|
|
if (yanklen != 0)
|
|
memmove(ybuf, &es->cbuf[a], yanklen);
|
|
}
|
|
|
|
static int
|
|
bracktype(int ch)
|
|
{
|
|
switch (ch) {
|
|
|
|
case '(':
|
|
return 1;
|
|
|
|
case '[':
|
|
return 2;
|
|
|
|
case '{':
|
|
return 3;
|
|
|
|
case ')':
|
|
return -1;
|
|
|
|
case ']':
|
|
return -2;
|
|
|
|
case '}':
|
|
return -3;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Non user interface editor routines below here
|
|
*/
|
|
|
|
static int cur_col; /* current display column */
|
|
static int pwidth; /* display columns needed for prompt */
|
|
static int prompt_trunc; /* how much of prompt to truncate */
|
|
static int prompt_skip; /* how much of prompt to skip */
|
|
static int winwidth; /* available column positions */
|
|
static char *wbuf[2]; /* current & previous window buffer */
|
|
static int wbuf_len; /* length of window buffers (x_cols-3)*/
|
|
static int win; /* number of window buffer in use */
|
|
static char morec; /* more character at right of window */
|
|
static char holdbuf[LINE]; /* place to hold last edit buffer */
|
|
static int holdlen; /* length of holdbuf */
|
|
|
|
static void
|
|
save_cbuf(void)
|
|
{
|
|
memmove(holdbuf, es->cbuf, es->linelen);
|
|
holdlen = es->linelen;
|
|
holdbuf[holdlen] = '\0';
|
|
}
|
|
|
|
static void
|
|
restore_cbuf(void)
|
|
{
|
|
es->cursor = 0;
|
|
es->linelen = holdlen;
|
|
memmove(es->cbuf, holdbuf, holdlen);
|
|
}
|
|
|
|
/* return a new edstate */
|
|
static struct edstate *
|
|
save_edstate(struct edstate *old)
|
|
{
|
|
struct edstate *new;
|
|
|
|
new = alloc(sizeof(struct edstate), APERM);
|
|
new->cbuf = alloc(old->cbufsize, APERM);
|
|
memcpy(new->cbuf, old->cbuf, old->linelen);
|
|
new->cbufsize = old->cbufsize;
|
|
new->linelen = old->linelen;
|
|
new->cursor = old->cursor;
|
|
new->winleft = old->winleft;
|
|
return new;
|
|
}
|
|
|
|
static void
|
|
restore_edstate(struct edstate *new, struct edstate *old)
|
|
{
|
|
memcpy(new->cbuf, old->cbuf, old->linelen);
|
|
new->linelen = old->linelen;
|
|
new->cursor = old->cursor;
|
|
new->winleft = old->winleft;
|
|
free_edstate(old);
|
|
}
|
|
|
|
static void
|
|
free_edstate(struct edstate *old)
|
|
{
|
|
afree(old->cbuf, APERM);
|
|
afree(old, APERM);
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
edit_reset(char *buf, size_t len)
|
|
{
|
|
const char *p;
|
|
|
|
es = &ebuf;
|
|
es->cbuf = buf;
|
|
es->cbufsize = len;
|
|
undo = &undobuf;
|
|
undo->cbufsize = len;
|
|
|
|
es->linelen = undo->linelen = 0;
|
|
es->cursor = undo->cursor = 0;
|
|
es->winleft = undo->winleft = 0;
|
|
|
|
cur_col = pwidth = promptlen(prompt, &p);
|
|
prompt_skip = p - prompt;
|
|
if (pwidth > x_cols - 3 - MIN_EDIT_SPACE) {
|
|
cur_col = x_cols - 3 - MIN_EDIT_SPACE;
|
|
prompt_trunc = pwidth - cur_col;
|
|
pwidth -= prompt_trunc;
|
|
} else
|
|
prompt_trunc = 0;
|
|
if (!wbuf_len || wbuf_len != x_cols - 3) {
|
|
wbuf_len = x_cols - 3;
|
|
wbuf[0] = aresize(wbuf[0], wbuf_len, APERM);
|
|
wbuf[1] = aresize(wbuf[1], wbuf_len, APERM);
|
|
}
|
|
(void) memset(wbuf[0], ' ', wbuf_len);
|
|
(void) memset(wbuf[1], ' ', wbuf_len);
|
|
winwidth = x_cols - pwidth - 3;
|
|
win = 0;
|
|
morec = ' ';
|
|
holdlen = 0;
|
|
}
|
|
|
|
/*
|
|
* this is used for calling x_escape() in complete_word()
|
|
*/
|
|
static int
|
|
x_vi_putbuf(const char *s, size_t len)
|
|
{
|
|
return putbuf(s, len, 0);
|
|
}
|
|
|
|
static int
|
|
putbuf(const char *buf, int len, int repl)
|
|
{
|
|
if (len == 0)
|
|
return 0;
|
|
if (repl) {
|
|
if (es->cursor + len >= es->cbufsize)
|
|
return -1;
|
|
if (es->cursor + len > es->linelen)
|
|
es->linelen = es->cursor + len;
|
|
} else {
|
|
if (es->linelen + len >= es->cbufsize)
|
|
return -1;
|
|
memmove(&es->cbuf[es->cursor + len], &es->cbuf[es->cursor],
|
|
es->linelen - es->cursor);
|
|
es->linelen += len;
|
|
}
|
|
memmove(&es->cbuf[es->cursor], buf, len);
|
|
es->cursor += len;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
del_range(int a, int b)
|
|
{
|
|
if (es->linelen != b)
|
|
memmove(&es->cbuf[a], &es->cbuf[b], es->linelen - b);
|
|
es->linelen -= b - a;
|
|
}
|
|
|
|
static int
|
|
findch(int ch, int cnt, int forw, int incl)
|
|
{
|
|
int ncursor;
|
|
|
|
if (es->linelen == 0)
|
|
return -1;
|
|
ncursor = es->cursor;
|
|
while (cnt--) {
|
|
do {
|
|
if (forw) {
|
|
if (++ncursor == es->linelen)
|
|
return -1;
|
|
} else {
|
|
if (--ncursor < 0)
|
|
return -1;
|
|
}
|
|
} while (es->cbuf[ncursor] != ch);
|
|
}
|
|
if (!incl) {
|
|
if (forw)
|
|
ncursor--;
|
|
else
|
|
ncursor++;
|
|
}
|
|
return ncursor;
|
|
}
|
|
|
|
/* Move right one character, and then to the beginning of the next word. */
|
|
static int
|
|
forwword(int argcnt)
|
|
{
|
|
int ncursor, skip_space, want_letnum;
|
|
unsigned char uc;
|
|
|
|
ncursor = es->cursor;
|
|
while (ncursor < es->linelen && argcnt--) {
|
|
skip_space = 0;
|
|
want_letnum = -1;
|
|
ncursor--;
|
|
while (++ncursor < es->linelen) {
|
|
uc = es->cbuf[ncursor];
|
|
if (isspace(uc)) {
|
|
skip_space = 1;
|
|
continue;
|
|
} else if (skip_space)
|
|
break;
|
|
if (uc & 0x80)
|
|
continue;
|
|
if (want_letnum == -1)
|
|
want_letnum = letnum(uc);
|
|
else if (want_letnum != letnum(uc))
|
|
break;
|
|
}
|
|
}
|
|
return ncursor;
|
|
}
|
|
|
|
/* Move left one character, and then to the beginning of the word. */
|
|
static int
|
|
backword(int argcnt)
|
|
{
|
|
int ncursor, skip_space, want_letnum;
|
|
unsigned char uc;
|
|
|
|
ncursor = es->cursor;
|
|
while (ncursor > 0 && argcnt--) {
|
|
skip_space = 1;
|
|
want_letnum = -1;
|
|
while (ncursor-- > 0) {
|
|
uc = es->cbuf[ncursor];
|
|
if (isspace(uc)) {
|
|
if (skip_space)
|
|
continue;
|
|
else
|
|
break;
|
|
}
|
|
skip_space = 0;
|
|
if (uc & 0x80)
|
|
continue;
|
|
if (want_letnum == -1)
|
|
want_letnum = letnum(uc);
|
|
else if (want_letnum != letnum(uc))
|
|
break;
|
|
}
|
|
ncursor++;
|
|
}
|
|
return ncursor;
|
|
}
|
|
|
|
/* Move right one character, and then to the byte after the word. */
|
|
static int
|
|
endword(int argcnt)
|
|
{
|
|
int ncursor, skip_space, want_letnum;
|
|
unsigned char uc;
|
|
|
|
ncursor = es->cursor;
|
|
while (ncursor < es->linelen && argcnt--) {
|
|
skip_space = 1;
|
|
want_letnum = -1;
|
|
while (++ncursor < es->linelen) {
|
|
uc = es->cbuf[ncursor];
|
|
if (isspace(uc)) {
|
|
if (skip_space)
|
|
continue;
|
|
else
|
|
break;
|
|
}
|
|
skip_space = 0;
|
|
if (uc & 0x80)
|
|
continue;
|
|
if (want_letnum == -1)
|
|
want_letnum = letnum(uc);
|
|
else if (want_letnum != letnum(uc))
|
|
break;
|
|
}
|
|
}
|
|
return ncursor;
|
|
}
|
|
|
|
/* Move right one character, and then to the beginning of the next big word. */
|
|
static int
|
|
Forwword(int argcnt)
|
|
{
|
|
int ncursor;
|
|
|
|
ncursor = es->cursor;
|
|
while (ncursor < es->linelen && argcnt--) {
|
|
while (!isspace((unsigned char)es->cbuf[ncursor]) &&
|
|
ncursor < es->linelen)
|
|
ncursor++;
|
|
while (isspace((unsigned char)es->cbuf[ncursor]) &&
|
|
ncursor < es->linelen)
|
|
ncursor++;
|
|
}
|
|
return ncursor;
|
|
}
|
|
|
|
/* Move left one character, and then to the beginning of the big word. */
|
|
static int
|
|
Backword(int argcnt)
|
|
{
|
|
int ncursor;
|
|
|
|
ncursor = es->cursor;
|
|
while (ncursor > 0 && argcnt--) {
|
|
while (--ncursor >= 0 &&
|
|
isspace((unsigned char)es->cbuf[ncursor]))
|
|
;
|
|
while (ncursor >= 0 &&
|
|
!isspace((unsigned char)es->cbuf[ncursor]))
|
|
ncursor--;
|
|
ncursor++;
|
|
}
|
|
return ncursor;
|
|
}
|
|
|
|
/* Move right one character, and then to the byte after the big word. */
|
|
static int
|
|
Endword(int argcnt)
|
|
{
|
|
int ncursor;
|
|
|
|
ncursor = es->cursor;
|
|
while (ncursor < es->linelen && argcnt--) {
|
|
while (++ncursor < es->linelen &&
|
|
isspace((unsigned char)es->cbuf[ncursor]))
|
|
;
|
|
while (ncursor < es->linelen &&
|
|
!isspace((unsigned char)es->cbuf[ncursor]))
|
|
ncursor++;
|
|
}
|
|
return ncursor;
|
|
}
|
|
|
|
static int
|
|
grabhist(int save, int n)
|
|
{
|
|
char *hptr;
|
|
|
|
if (n < 0 || n > hlast)
|
|
return -1;
|
|
if (n == hlast) {
|
|
restore_cbuf();
|
|
ohnum = n;
|
|
return 0;
|
|
}
|
|
(void) histnum(n);
|
|
if ((hptr = *histpos()) == NULL) {
|
|
internal_warningf("%s: bad history array", __func__);
|
|
return -1;
|
|
}
|
|
if (save)
|
|
save_cbuf();
|
|
if ((es->linelen = strlen(hptr)) >= es->cbufsize)
|
|
es->linelen = es->cbufsize - 1;
|
|
memmove(es->cbuf, hptr, es->linelen);
|
|
es->cursor = 0;
|
|
ohnum = n;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
grabsearch(int save, int start, int fwd, char *pat)
|
|
{
|
|
char *hptr;
|
|
int hist;
|
|
int anchored;
|
|
|
|
if ((start == 0 && fwd == 0) || (start >= hlast-1 && fwd == 1))
|
|
return -1;
|
|
if (fwd)
|
|
start++;
|
|
else
|
|
start--;
|
|
anchored = *pat == '^' ? (++pat, 1) : 0;
|
|
if ((hist = findhist(start, fwd, pat, anchored)) < 0) {
|
|
/* if (start != 0 && fwd && match(holdbuf, pat) >= 0) { */
|
|
/* XXX should strcmp be strncmp? */
|
|
if (start != 0 && fwd && strcmp(holdbuf, pat) >= 0) {
|
|
restore_cbuf();
|
|
return 0;
|
|
} else
|
|
return -1;
|
|
}
|
|
if (save)
|
|
save_cbuf();
|
|
histnum(hist);
|
|
hptr = *histpos();
|
|
if ((es->linelen = strlen(hptr)) >= es->cbufsize)
|
|
es->linelen = es->cbufsize - 1;
|
|
memmove(es->cbuf, hptr, es->linelen);
|
|
es->cursor = 0;
|
|
return hist;
|
|
}
|
|
|
|
static void
|
|
do_clear_screen(void)
|
|
{
|
|
int neednl = 1;
|
|
|
|
#ifndef SMALL
|
|
if (cur_term != NULL && clear_screen != NULL) {
|
|
if (tputs(clear_screen, 1, x_putc) != ERR)
|
|
neednl = 0;
|
|
}
|
|
#endif
|
|
/* Only print the full prompt if we cleared the screen. */
|
|
redraw_line(neednl, !neednl);
|
|
}
|
|
|
|
static void
|
|
redraw_line(int neednl, int full)
|
|
{
|
|
(void) memset(wbuf[win], ' ', wbuf_len);
|
|
if (neednl) {
|
|
x_putc('\r');
|
|
x_putc('\n');
|
|
}
|
|
vi_pprompt(full);
|
|
cur_col = pwidth;
|
|
morec = ' ';
|
|
}
|
|
|
|
static void
|
|
refresh_line(int leftside)
|
|
{
|
|
if (outofwin())
|
|
rewindow();
|
|
display(wbuf[1 - win], wbuf[win], leftside);
|
|
win = 1 - win;
|
|
}
|
|
|
|
static int
|
|
outofwin(void)
|
|
{
|
|
int cur, col;
|
|
|
|
if (es->cursor < es->winleft)
|
|
return 1;
|
|
col = 0;
|
|
cur = es->winleft;
|
|
while (cur < es->cursor)
|
|
col = newcol((unsigned char) es->cbuf[cur++], col);
|
|
if (col >= winwidth)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
rewindow(void)
|
|
{
|
|
int tcur, tcol;
|
|
int holdcur1, holdcol1;
|
|
int holdcur2, holdcol2;
|
|
|
|
holdcur1 = holdcur2 = tcur = 0;
|
|
holdcol1 = holdcol2 = tcol = 0;
|
|
while (tcur < es->cursor) {
|
|
if (tcol - holdcol2 > winwidth / 2) {
|
|
holdcur1 = holdcur2;
|
|
holdcol1 = holdcol2;
|
|
holdcur2 = tcur;
|
|
holdcol2 = tcol;
|
|
}
|
|
tcol = newcol((unsigned char) es->cbuf[tcur++], tcol);
|
|
}
|
|
while (tcol - holdcol1 > winwidth / 2)
|
|
holdcol1 = newcol((unsigned char) es->cbuf[holdcur1++],
|
|
holdcol1);
|
|
es->winleft = holdcur1;
|
|
}
|
|
|
|
/* Printing the byte ch at display column col moves to which column? */
|
|
static int
|
|
newcol(int ch, int col)
|
|
{
|
|
if (ch == '\t')
|
|
return (col | 7) + 1;
|
|
if (isu8cont(ch))
|
|
return col;
|
|
return col + char_len(ch);
|
|
}
|
|
|
|
/* Display wb1 assuming that wb2 is currently displayed. */
|
|
static void
|
|
display(char *wb1, char *wb2, int leftside)
|
|
{
|
|
char *twb1; /* pointer into the buffer to display */
|
|
char *twb2; /* pointer into the previous display buffer */
|
|
static int lastb = -1; /* last byte# written from wb1, if UTF-8 */
|
|
int cur; /* byte# in the main command line buffer */
|
|
int col; /* display column loop variable */
|
|
int ncol; /* display column of the cursor */
|
|
int cnt; /* remaining display columns to fill */
|
|
int moreright;
|
|
char mc; /* new "more character" at the right of window */
|
|
unsigned char ch;
|
|
|
|
/*
|
|
* Fill the current display buffer with data from cbuf.
|
|
* In this first loop, col does not include the prompt.
|
|
*/
|
|
|
|
ncol = col = 0;
|
|
cur = es->winleft;
|
|
moreright = 0;
|
|
twb1 = wb1;
|
|
while (col < winwidth && cur < es->linelen) {
|
|
if (cur == es->cursor && leftside)
|
|
ncol = col + pwidth;
|
|
if ((ch = es->cbuf[cur]) == '\t') {
|
|
do {
|
|
*twb1++ = ' ';
|
|
} while (++col < winwidth && (col & 7) != 0);
|
|
} else {
|
|
if ((ch & 0x80) && Flag(FVISHOW8)) {
|
|
*twb1++ = 'M';
|
|
if (++col < winwidth) {
|
|
*twb1++ = '-';
|
|
col++;
|
|
}
|
|
ch &= 0x7f;
|
|
}
|
|
if (col < winwidth) {
|
|
if (ch < ' ' || ch == 0x7f) {
|
|
*twb1++ = '^';
|
|
if (++col < winwidth) {
|
|
*twb1++ = ch ^ '@';
|
|
col++;
|
|
}
|
|
} else {
|
|
*twb1++ = ch;
|
|
if (!isu8cont(ch))
|
|
col++;
|
|
}
|
|
}
|
|
}
|
|
if (cur == es->cursor && !leftside)
|
|
ncol = col + pwidth - 1;
|
|
cur++;
|
|
}
|
|
if (cur == es->cursor)
|
|
ncol = col + pwidth;
|
|
|
|
/* Pad the current display buffer to the right margin. */
|
|
|
|
if (col < winwidth) {
|
|
while (col < winwidth) {
|
|
*twb1++ = ' ';
|
|
col++;
|
|
}
|
|
} else
|
|
moreright++;
|
|
*twb1 = ' ';
|
|
|
|
/*
|
|
* Update the terminal display with data from wb1.
|
|
* In this final loop, col includes the prompt.
|
|
*/
|
|
|
|
col = pwidth;
|
|
cnt = winwidth;
|
|
for (twb1 = wb1, twb2 = wb2; cnt; twb1++, twb2++) {
|
|
if (*twb1 != *twb2) {
|
|
|
|
/*
|
|
* When a byte changes in the middle of a UTF-8
|
|
* character, back up to the start byte, unless
|
|
* the previous byte was the last one written.
|
|
*/
|
|
|
|
if (col > 0 && isu8cont(*twb1)) {
|
|
col--;
|
|
if (lastb >= 0 && twb1 == wb1 + lastb + 1)
|
|
cur_col = col;
|
|
else while (twb1 > wb1 && isu8cont(*twb1)) {
|
|
twb1--;
|
|
twb2--;
|
|
}
|
|
}
|
|
|
|
if (cur_col != col)
|
|
ed_mov_opt(col, wb1);
|
|
|
|
/*
|
|
* Always write complete characters, and
|
|
* advance all pointers accordingly.
|
|
*/
|
|
|
|
x_putc(*twb1);
|
|
while (isu8cont(twb1[1])) {
|
|
x_putc(*++twb1);
|
|
twb2++;
|
|
}
|
|
lastb = *twb1 & 0x80 ? twb1 - wb1 : -1;
|
|
cur_col++;
|
|
} else if (isu8cont(*twb1))
|
|
continue;
|
|
|
|
/*
|
|
* For changed continuation bytes, we backed up.
|
|
* For unchanged ones, we jumped to the next byte.
|
|
* So, getting here, we had a real column.
|
|
*/
|
|
|
|
col++;
|
|
cnt--;
|
|
}
|
|
|
|
/* Update the "more character". */
|
|
|
|
if (es->winleft > 0 && moreright)
|
|
/* POSIX says to use * for this but that is a globbing
|
|
* character and may confuse people; + is more innocuous
|
|
*/
|
|
mc = '+';
|
|
else if (es->winleft > 0)
|
|
mc = '<';
|
|
else if (moreright)
|
|
mc = '>';
|
|
else
|
|
mc = ' ';
|
|
if (mc != morec) {
|
|
ed_mov_opt(pwidth + winwidth + 1, wb1);
|
|
x_putc(mc);
|
|
cur_col++;
|
|
morec = mc;
|
|
lastb = -1;
|
|
}
|
|
|
|
/* Move the cursor to its new position. */
|
|
|
|
if (cur_col != ncol) {
|
|
ed_mov_opt(ncol, wb1);
|
|
lastb = -1;
|
|
}
|
|
}
|
|
|
|
/* Move the display cursor to display column number col. */
|
|
static void
|
|
ed_mov_opt(int col, char *wb)
|
|
{
|
|
int ci;
|
|
|
|
/* The cursor is already at the right place. */
|
|
|
|
if (cur_col == col)
|
|
return;
|
|
|
|
/* The cursor is too far right. */
|
|
|
|
if (cur_col > col) {
|
|
if (cur_col > 2 * col + 1) {
|
|
/* Much too far right, redraw from scratch. */
|
|
x_putc('\r');
|
|
vi_pprompt(0);
|
|
cur_col = pwidth;
|
|
} else {
|
|
/* Slightly too far right, back up. */
|
|
do {
|
|
x_putc('\b');
|
|
} while (--cur_col > col);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Advance the cursor. */
|
|
|
|
for (ci = pwidth; ci < col || isu8cont(*wb);
|
|
ci = newcol((unsigned char)*wb++, ci))
|
|
if (ci > cur_col || (ci == cur_col && !isu8cont(*wb)))
|
|
x_putc(*wb);
|
|
cur_col = ci;
|
|
}
|
|
|
|
|
|
/* replace word with all expansions (ie, expand word*) */
|
|
static int
|
|
expand_word(int command)
|
|
{
|
|
static struct edstate *buf;
|
|
int rval = 0;
|
|
int nwords;
|
|
int start, end;
|
|
char **words;
|
|
int i;
|
|
|
|
/* Undo previous expansion */
|
|
if (command == 0 && expanded == EXPAND && buf) {
|
|
restore_edstate(es, buf);
|
|
buf = NULL;
|
|
expanded = NONE;
|
|
return 0;
|
|
}
|
|
if (buf) {
|
|
free_edstate(buf);
|
|
buf = NULL;
|
|
}
|
|
|
|
nwords = x_cf_glob(XCF_COMMAND_FILE|XCF_FULLPATH,
|
|
es->cbuf, es->linelen, es->cursor,
|
|
&start, &end, &words, NULL);
|
|
if (nwords == 0) {
|
|
vi_error();
|
|
return -1;
|
|
}
|
|
|
|
buf = save_edstate(es);
|
|
expanded = EXPAND;
|
|
del_range(start, end);
|
|
es->cursor = start;
|
|
for (i = 0; i < nwords; ) {
|
|
if (x_escape(words[i], strlen(words[i]), x_vi_putbuf) != 0) {
|
|
rval = -1;
|
|
break;
|
|
}
|
|
if (++i < nwords && putbuf(" ", 1, 0) != 0) {
|
|
rval = -1;
|
|
break;
|
|
}
|
|
}
|
|
i = buf->cursor - end;
|
|
if (rval == 0 && i > 0)
|
|
es->cursor += i;
|
|
modified = 1; hnum = hlast;
|
|
insert = INSERT;
|
|
lastac = 0;
|
|
refresh_line(0);
|
|
return rval;
|
|
}
|
|
|
|
static int
|
|
complete_word(int command, int count)
|
|
{
|
|
static struct edstate *buf;
|
|
int rval = 0;
|
|
int nwords;
|
|
int start, end;
|
|
char **words;
|
|
char *match;
|
|
int match_len;
|
|
int is_unique;
|
|
int is_command;
|
|
|
|
/* Undo previous completion */
|
|
if (command == 0 && expanded == COMPLETE && buf) {
|
|
print_expansions(buf);
|
|
expanded = PRINT;
|
|
return 0;
|
|
}
|
|
if (command == 0 && expanded == PRINT && buf) {
|
|
restore_edstate(es, buf);
|
|
buf = NULL;
|
|
expanded = NONE;
|
|
return 0;
|
|
}
|
|
if (buf) {
|
|
free_edstate(buf);
|
|
buf = NULL;
|
|
}
|
|
|
|
/* XCF_FULLPATH for count 'cause the menu printed by print_expansions()
|
|
* was done this way.
|
|
*/
|
|
nwords = x_cf_glob(XCF_COMMAND_FILE | (count ? XCF_FULLPATH : 0),
|
|
es->cbuf, es->linelen, es->cursor,
|
|
&start, &end, &words, &is_command);
|
|
if (nwords == 0) {
|
|
vi_error();
|
|
return -1;
|
|
}
|
|
if (count) {
|
|
int i;
|
|
|
|
count--;
|
|
if (count >= nwords) {
|
|
vi_error();
|
|
x_print_expansions(nwords, words, is_command);
|
|
x_free_words(nwords, words);
|
|
redraw_line(0, 0);
|
|
return -1;
|
|
}
|
|
/*
|
|
* Expand the count'th word to its basename
|
|
*/
|
|
if (is_command) {
|
|
match = words[count] +
|
|
x_basename(words[count], NULL);
|
|
/* If more than one possible match, use full path */
|
|
for (i = 0; i < nwords; i++)
|
|
if (i != count &&
|
|
strcmp(words[i] + x_basename(words[i],
|
|
NULL), match) == 0) {
|
|
match = words[count];
|
|
break;
|
|
}
|
|
} else
|
|
match = words[count];
|
|
match_len = strlen(match);
|
|
is_unique = 1;
|
|
/* expanded = PRINT; next call undo */
|
|
} else {
|
|
match = words[0];
|
|
match_len = x_longest_prefix(nwords, words);
|
|
expanded = COMPLETE; /* next call will list completions */
|
|
is_unique = nwords == 1;
|
|
}
|
|
|
|
buf = save_edstate(es);
|
|
del_range(start, end);
|
|
es->cursor = start;
|
|
|
|
/* escape all shell-sensitive characters and put the result into
|
|
* command buffer */
|
|
rval = x_escape(match, match_len, x_vi_putbuf);
|
|
|
|
if (rval == 0 && is_unique) {
|
|
/* If exact match, don't undo. Allows directory completions
|
|
* to be used (ie, complete the next portion of the path).
|
|
*/
|
|
expanded = NONE;
|
|
|
|
/* If not a directory, add a space to the end... */
|
|
if (match_len > 0 && match[match_len - 1] != '/')
|
|
rval = putbuf(" ", 1, 0);
|
|
}
|
|
x_free_words(nwords, words);
|
|
|
|
modified = 1; hnum = hlast;
|
|
insert = INSERT;
|
|
lastac = 0; /* prevent this from being redone... */
|
|
refresh_line(0);
|
|
|
|
return rval;
|
|
}
|
|
|
|
static int
|
|
print_expansions(struct edstate *e)
|
|
{
|
|
int nwords;
|
|
int start, end;
|
|
char **words;
|
|
int is_command;
|
|
|
|
nwords = x_cf_glob(XCF_COMMAND_FILE|XCF_FULLPATH,
|
|
e->cbuf, e->linelen, e->cursor,
|
|
&start, &end, &words, &is_command);
|
|
if (nwords == 0) {
|
|
vi_error();
|
|
return -1;
|
|
}
|
|
x_print_expansions(nwords, words, is_command);
|
|
x_free_words(nwords, words);
|
|
redraw_line(0, 0);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* The number of bytes needed to encode byte c.
|
|
* Control bytes get "M-" or "^" prepended.
|
|
* This function does not handle tabs.
|
|
*/
|
|
static int
|
|
char_len(int c)
|
|
{
|
|
int len = 1;
|
|
|
|
if ((c & 0x80) && Flag(FVISHOW8)) {
|
|
len += 2;
|
|
c &= 0x7f;
|
|
}
|
|
if (c < ' ' || c == 0x7f)
|
|
len++;
|
|
return len;
|
|
}
|
|
|
|
/* Similar to x_zotc(emacs.c), but no tab weirdness */
|
|
static void
|
|
x_vi_zotc(int c)
|
|
{
|
|
if (Flag(FVISHOW8) && (c & 0x80)) {
|
|
x_puts("M-");
|
|
c &= 0x7f;
|
|
}
|
|
if (c < ' ' || c == 0x7f) {
|
|
x_putc('^');
|
|
c ^= '@';
|
|
}
|
|
x_putc(c);
|
|
}
|
|
|
|
static void
|
|
vi_pprompt(int full)
|
|
{
|
|
pprompt(prompt + (full ? 0 : prompt_skip), prompt_trunc);
|
|
}
|
|
|
|
static void
|
|
vi_error(void)
|
|
{
|
|
/* Beem out of any macros as soon as an error occurs */
|
|
vi_macro_reset();
|
|
x_putc(BEL);
|
|
x_flush();
|
|
}
|
|
|
|
static void
|
|
vi_macro_reset(void)
|
|
{
|
|
if (macro.p) {
|
|
afree(macro.buf, APERM);
|
|
memset((char *) ¯o, 0, sizeof(macro));
|
|
}
|
|
}
|
|
|
|
static int
|
|
isu8cont(unsigned char c)
|
|
{
|
|
return !Flag(FVISHOW8) && (c & (0x80 | 0x40)) == 0x80;
|
|
}
|
|
#endif /* VI */
|