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/* Normal-format output routines for GNU DIFF.
Copyright (C) 1988, 1989, 1993, 1998 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.
*/
#include "diff.h"
static void print_normal_hunk PARAMS((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 (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 (hunk)
struct change *hunk;
{
int first0, last0, first1, last1, deletes, inserts;
register int i;
/* Determine range of line numbers involved in each file. */
analyze_hunk (hunk, &first0, &last0, &first1, &last1, &deletes, &inserts);
if (!deletes && !inserts)
return;
begin_output ();
/* Print out the line number header for this hunk */
print_number_range (',', &files[0], first0, last0);
printf_output ("%c", change_letter (inserts, deletes));
print_number_range (',', &files[1], first1, last1);
printf_output ("\n");
/* Print the lines that the first file has. */
if (deletes)
for (i = first0; i <= last0; i++)
print_1_line ("<", &files[0].linbuf[i]);
if (inserts && deletes)
printf_output ("---\n");
/* Print the lines that the second file has. */
if (inserts)
for (i = first1; i <= last1; i++)
print_1_line (">", &files[1].linbuf[i]);
}
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