mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-25 12:02:01 +01:00
201 lines
5.2 KiB
C
201 lines
5.2 KiB
C
/* Output routines for ed-script format.
|
||
Copyright (C) 1988, 89, 91, 92, 93 Free Software Foundation, Inc.
|
||
|
||
This file is part of GNU DIFF.
|
||
|
||
GNU DIFF is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2, or (at your option)
|
||
any later version.
|
||
|
||
GNU DIFF is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GNU DIFF; see the file COPYING. If not, write to
|
||
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
#include "diff.h"
|
||
|
||
static void print_ed_hunk PARAMS((struct change *));
|
||
static void print_rcs_hunk PARAMS((struct change *));
|
||
static void pr_forward_ed_hunk PARAMS((struct change *));
|
||
|
||
/* Print our script as ed commands. */
|
||
|
||
void
|
||
print_ed_script (script)
|
||
struct change *script;
|
||
{
|
||
print_script (script, find_reverse_change, print_ed_hunk);
|
||
}
|
||
|
||
/* Print a hunk of an ed diff */
|
||
|
||
static void
|
||
print_ed_hunk (hunk)
|
||
struct change *hunk;
|
||
{
|
||
int f0, l0, f1, l1;
|
||
int deletes, inserts;
|
||
|
||
#if 0
|
||
hunk = flip_script (hunk);
|
||
#endif
|
||
#ifdef DEBUG
|
||
debug_script (hunk);
|
||
#endif
|
||
|
||
/* Determine range of line numbers involved in each file. */
|
||
analyze_hunk (hunk, &f0, &l0, &f1, &l1, &deletes, &inserts);
|
||
if (!deletes && !inserts)
|
||
return;
|
||
|
||
begin_output ();
|
||
|
||
/* Print out the line number header for this hunk */
|
||
print_number_range (',', &files[0], f0, l0);
|
||
fprintf (outfile, "%c\n", change_letter (inserts, deletes));
|
||
|
||
/* Print new/changed lines from second file, if needed */
|
||
if (inserts)
|
||
{
|
||
int i;
|
||
int inserting = 1;
|
||
for (i = f1; i <= l1; i++)
|
||
{
|
||
/* Resume the insert, if we stopped. */
|
||
if (! inserting)
|
||
fprintf (outfile, "%da\n",
|
||
i - f1 + translate_line_number (&files[0], f0) - 1);
|
||
inserting = 1;
|
||
|
||
/* If the file's line is just a dot, it would confuse `ed'.
|
||
So output it with a double dot, and set the flag LEADING_DOT
|
||
so that we will output another ed-command later
|
||
to change the double dot into a single dot. */
|
||
|
||
if (files[1].linbuf[i][0] == '.'
|
||
&& files[1].linbuf[i][1] == '\n')
|
||
{
|
||
fprintf (outfile, "..\n");
|
||
fprintf (outfile, ".\n");
|
||
/* Now change that double dot to the desired single dot. */
|
||
fprintf (outfile, "%ds/^\\.\\././\n",
|
||
i - f1 + translate_line_number (&files[0], f0));
|
||
inserting = 0;
|
||
}
|
||
else
|
||
/* Line is not `.', so output it unmodified. */
|
||
print_1_line ("", &files[1].linbuf[i]);
|
||
}
|
||
|
||
/* End insert mode, if we are still in it. */
|
||
if (inserting)
|
||
fprintf (outfile, ".\n");
|
||
}
|
||
}
|
||
|
||
/* Print change script in the style of ed commands,
|
||
but print the changes in the order they appear in the input files,
|
||
which means that the commands are not truly useful with ed. */
|
||
|
||
void
|
||
pr_forward_ed_script (script)
|
||
struct change *script;
|
||
{
|
||
print_script (script, find_change, pr_forward_ed_hunk);
|
||
}
|
||
|
||
static void
|
||
pr_forward_ed_hunk (hunk)
|
||
struct change *hunk;
|
||
{
|
||
int i;
|
||
int f0, l0, f1, l1;
|
||
int deletes, inserts;
|
||
|
||
/* Determine range of line numbers involved in each file. */
|
||
analyze_hunk (hunk, &f0, &l0, &f1, &l1, &deletes, &inserts);
|
||
if (!deletes && !inserts)
|
||
return;
|
||
|
||
begin_output ();
|
||
|
||
fprintf (outfile, "%c", change_letter (inserts, deletes));
|
||
print_number_range (' ', files, f0, l0);
|
||
fprintf (outfile, "\n");
|
||
|
||
/* If deletion only, print just the number range. */
|
||
|
||
if (!inserts)
|
||
return;
|
||
|
||
/* For insertion (with or without deletion), print the number range
|
||
and the lines from file 2. */
|
||
|
||
for (i = f1; i <= l1; i++)
|
||
print_1_line ("", &files[1].linbuf[i]);
|
||
|
||
fprintf (outfile, ".\n");
|
||
}
|
||
|
||
/* Print in a format somewhat like ed commands
|
||
except that each insert command states the number of lines it inserts.
|
||
This format is used for RCS. */
|
||
|
||
void
|
||
print_rcs_script (script)
|
||
struct change *script;
|
||
{
|
||
print_script (script, find_change, print_rcs_hunk);
|
||
}
|
||
|
||
/* Print a hunk of an RCS diff */
|
||
|
||
static void
|
||
print_rcs_hunk (hunk)
|
||
struct change *hunk;
|
||
{
|
||
int i;
|
||
int f0, l0, f1, l1;
|
||
int deletes, inserts;
|
||
int tf0, tl0, tf1, tl1;
|
||
|
||
/* Determine range of line numbers involved in each file. */
|
||
analyze_hunk (hunk, &f0, &l0, &f1, &l1, &deletes, &inserts);
|
||
if (!deletes && !inserts)
|
||
return;
|
||
|
||
begin_output ();
|
||
|
||
translate_range (&files[0], f0, l0, &tf0, &tl0);
|
||
|
||
if (deletes)
|
||
{
|
||
fprintf (outfile, "d");
|
||
/* For deletion, print just the starting line number from file 0
|
||
and the number of lines deleted. */
|
||
fprintf (outfile, "%d %d\n",
|
||
tf0,
|
||
(tl0 >= tf0 ? tl0 - tf0 + 1 : 1));
|
||
}
|
||
|
||
if (inserts)
|
||
{
|
||
fprintf (outfile, "a");
|
||
|
||
/* Take last-line-number from file 0 and # lines from file 1. */
|
||
translate_range (&files[1], f1, l1, &tf1, &tl1);
|
||
fprintf (outfile, "%d %d\n",
|
||
tl0,
|
||
(tl1 >= tf1 ? tl1 - tf1 + 1 : 1));
|
||
|
||
/* Print the inserted lines. */
|
||
for (i = f1; i <= l1; i++)
|
||
print_1_line ("", &files[1].linbuf[i]);
|
||
}
|
||
}
|