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/* Normal-format output routines for GNU DIFF.
Copyright (C) 1988-1989, 1993, 1995, 1998, 2001, 2006, 2009-2010 Free
Software Foundation, Inc.
This file is part of GNU DIFF.
This program 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 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#include "diff.h"
static void print_normal_hunk (struct change *);
/* Print the edit-script SCRIPT as a normal diff.
INF points to an array of descriptions of the two files. */
void
print_normal_script (struct change *script)
{
print_script (script, find_change, print_normal_hunk);
}
/* Print a hunk of a normal diff.
This is a contiguous portion of a complete edit script,
describing changes in consecutive lines. */
static void
print_normal_hunk (struct change *hunk)
{
lin first0, last0, first1, last1;
register lin i;
/* Determine range of line numbers involved in each file. */
enum changes changes = analyze_hunk (hunk, &first0, &last0, &first1, &last1);
if (!changes)
return;
begin_output ();
/* Print out the line number header for this hunk */
print_number_range (',', &files[0], first0, last0);
fputc (change_letter[changes], outfile);
print_number_range (',', &files[1], first1, last1);
fputc ('\n', outfile);
/* Print the lines that the first file has. */
if (changes & OLD)
for (i = first0; i <= last0; i++)
print_1_line ("<", &files[0].linbuf[i]);
if (changes == CHANGED)
fputs ("---\n", outfile);
/* Print the lines that the second file has. */
if (changes & NEW)
for (i = first1; i <= last1; i++)
print_1_line (">", &files[1].linbuf[i]);
}
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