1*0b459c2cSDavid du Colombier /* Normal-format output routines for GNU DIFF.
2*0b459c2cSDavid du Colombier Copyright (C) 1988, 1989, 1993 Free Software Foundation, Inc.
3*0b459c2cSDavid du Colombier
4*0b459c2cSDavid du Colombier This file is part of GNU DIFF.
5*0b459c2cSDavid du Colombier
6*0b459c2cSDavid du Colombier GNU DIFF is free software; you can redistribute it and/or modify
7*0b459c2cSDavid du Colombier it under the terms of the GNU General Public License as published by
8*0b459c2cSDavid du Colombier the Free Software Foundation; either version 2, or (at your option)
9*0b459c2cSDavid du Colombier any later version.
10*0b459c2cSDavid du Colombier
11*0b459c2cSDavid du Colombier GNU DIFF is distributed in the hope that it will be useful,
12*0b459c2cSDavid du Colombier but WITHOUT ANY WARRANTY; without even the implied warranty of
13*0b459c2cSDavid du Colombier MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14*0b459c2cSDavid du Colombier GNU General Public License for more details.
15*0b459c2cSDavid du Colombier
16*0b459c2cSDavid du Colombier You should have received a copy of the GNU General Public License
17*0b459c2cSDavid du Colombier along with GNU DIFF; see the file COPYING. If not, write to
18*0b459c2cSDavid du Colombier the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
19*0b459c2cSDavid du Colombier
20*0b459c2cSDavid du Colombier
21*0b459c2cSDavid du Colombier #include "diff.h"
22*0b459c2cSDavid du Colombier
23*0b459c2cSDavid du Colombier static void print_normal_hunk PARAMS((struct change *));
24*0b459c2cSDavid du Colombier
25*0b459c2cSDavid du Colombier /* Print the edit-script SCRIPT as a normal diff.
26*0b459c2cSDavid du Colombier INF points to an array of descriptions of the two files. */
27*0b459c2cSDavid du Colombier
28*0b459c2cSDavid du Colombier void
print_normal_script(script)29*0b459c2cSDavid du Colombier print_normal_script (script)
30*0b459c2cSDavid du Colombier struct change *script;
31*0b459c2cSDavid du Colombier {
32*0b459c2cSDavid du Colombier print_script (script, find_change, print_normal_hunk);
33*0b459c2cSDavid du Colombier }
34*0b459c2cSDavid du Colombier
35*0b459c2cSDavid du Colombier /* Print a hunk of a normal diff.
36*0b459c2cSDavid du Colombier This is a contiguous portion of a complete edit script,
37*0b459c2cSDavid du Colombier describing changes in consecutive lines. */
38*0b459c2cSDavid du Colombier
39*0b459c2cSDavid du Colombier static void
print_normal_hunk(hunk)40*0b459c2cSDavid du Colombier print_normal_hunk (hunk)
41*0b459c2cSDavid du Colombier struct change *hunk;
42*0b459c2cSDavid du Colombier {
43*0b459c2cSDavid du Colombier int first0, last0, first1, last1, deletes, inserts;
44*0b459c2cSDavid du Colombier register int i;
45*0b459c2cSDavid du Colombier
46*0b459c2cSDavid du Colombier /* Determine range of line numbers involved in each file. */
47*0b459c2cSDavid du Colombier analyze_hunk (hunk, &first0, &last0, &first1, &last1, &deletes, &inserts);
48*0b459c2cSDavid du Colombier if (!deletes && !inserts)
49*0b459c2cSDavid du Colombier return;
50*0b459c2cSDavid du Colombier
51*0b459c2cSDavid du Colombier begin_output ();
52*0b459c2cSDavid du Colombier
53*0b459c2cSDavid du Colombier /* Print out the line number header for this hunk */
54*0b459c2cSDavid du Colombier print_number_range (',', &files[0], first0, last0);
55*0b459c2cSDavid du Colombier fprintf (outfile, "%c", change_letter (inserts, deletes));
56*0b459c2cSDavid du Colombier print_number_range (',', &files[1], first1, last1);
57*0b459c2cSDavid du Colombier fprintf (outfile, "\n");
58*0b459c2cSDavid du Colombier
59*0b459c2cSDavid du Colombier /* Print the lines that the first file has. */
60*0b459c2cSDavid du Colombier if (deletes)
61*0b459c2cSDavid du Colombier for (i = first0; i <= last0; i++)
62*0b459c2cSDavid du Colombier print_1_line ("<", &files[0].linbuf[i]);
63*0b459c2cSDavid du Colombier
64*0b459c2cSDavid du Colombier if (inserts && deletes)
65*0b459c2cSDavid du Colombier fprintf (outfile, "---\n");
66*0b459c2cSDavid du Colombier
67*0b459c2cSDavid du Colombier /* Print the lines that the second file has. */
68*0b459c2cSDavid du Colombier if (inserts)
69*0b459c2cSDavid du Colombier for (i = first1; i <= last1; i++)
70*0b459c2cSDavid du Colombier print_1_line (">", &files[1].linbuf[i]);
71*0b459c2cSDavid du Colombier }
72