1*86d7f5d3SJohn Marino /* Normal-format output routines for GNU DIFF.
2*86d7f5d3SJohn Marino Copyright (C) 1988, 1989, 1993, 1998 Free Software Foundation, Inc.
3*86d7f5d3SJohn Marino
4*86d7f5d3SJohn Marino This file is part of GNU DIFF.
5*86d7f5d3SJohn Marino
6*86d7f5d3SJohn Marino GNU DIFF is free software; you can redistribute it and/or modify
7*86d7f5d3SJohn Marino it under the terms of the GNU General Public License as published by
8*86d7f5d3SJohn Marino the Free Software Foundation; either version 2, or (at your option)
9*86d7f5d3SJohn Marino any later version.
10*86d7f5d3SJohn Marino
11*86d7f5d3SJohn Marino GNU DIFF is distributed in the hope that it will be useful,
12*86d7f5d3SJohn Marino but WITHOUT ANY WARRANTY; without even the implied warranty of
13*86d7f5d3SJohn Marino MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14*86d7f5d3SJohn Marino GNU General Public License for more details.
15*86d7f5d3SJohn Marino
16*86d7f5d3SJohn Marino */
17*86d7f5d3SJohn Marino
18*86d7f5d3SJohn Marino
19*86d7f5d3SJohn Marino #include "diff.h"
20*86d7f5d3SJohn Marino
21*86d7f5d3SJohn Marino static void print_normal_hunk PARAMS((struct change *));
22*86d7f5d3SJohn Marino
23*86d7f5d3SJohn Marino /* Print the edit-script SCRIPT as a normal diff.
24*86d7f5d3SJohn Marino INF points to an array of descriptions of the two files. */
25*86d7f5d3SJohn Marino
26*86d7f5d3SJohn Marino void
print_normal_script(script)27*86d7f5d3SJohn Marino print_normal_script (script)
28*86d7f5d3SJohn Marino struct change *script;
29*86d7f5d3SJohn Marino {
30*86d7f5d3SJohn Marino print_script (script, find_change, print_normal_hunk);
31*86d7f5d3SJohn Marino }
32*86d7f5d3SJohn Marino
33*86d7f5d3SJohn Marino /* Print a hunk of a normal diff.
34*86d7f5d3SJohn Marino This is a contiguous portion of a complete edit script,
35*86d7f5d3SJohn Marino describing changes in consecutive lines. */
36*86d7f5d3SJohn Marino
37*86d7f5d3SJohn Marino static void
print_normal_hunk(hunk)38*86d7f5d3SJohn Marino print_normal_hunk (hunk)
39*86d7f5d3SJohn Marino struct change *hunk;
40*86d7f5d3SJohn Marino {
41*86d7f5d3SJohn Marino int first0, last0, first1, last1, deletes, inserts;
42*86d7f5d3SJohn Marino register int i;
43*86d7f5d3SJohn Marino
44*86d7f5d3SJohn Marino /* Determine range of line numbers involved in each file. */
45*86d7f5d3SJohn Marino analyze_hunk (hunk, &first0, &last0, &first1, &last1, &deletes, &inserts);
46*86d7f5d3SJohn Marino if (!deletes && !inserts)
47*86d7f5d3SJohn Marino return;
48*86d7f5d3SJohn Marino
49*86d7f5d3SJohn Marino begin_output ();
50*86d7f5d3SJohn Marino
51*86d7f5d3SJohn Marino /* Print out the line number header for this hunk */
52*86d7f5d3SJohn Marino print_number_range (',', &files[0], first0, last0);
53*86d7f5d3SJohn Marino printf_output ("%c", change_letter (inserts, deletes));
54*86d7f5d3SJohn Marino print_number_range (',', &files[1], first1, last1);
55*86d7f5d3SJohn Marino printf_output ("\n");
56*86d7f5d3SJohn Marino
57*86d7f5d3SJohn Marino /* Print the lines that the first file has. */
58*86d7f5d3SJohn Marino if (deletes)
59*86d7f5d3SJohn Marino for (i = first0; i <= last0; i++)
60*86d7f5d3SJohn Marino print_1_line ("<", &files[0].linbuf[i]);
61*86d7f5d3SJohn Marino
62*86d7f5d3SJohn Marino if (inserts && deletes)
63*86d7f5d3SJohn Marino printf_output ("---\n");
64*86d7f5d3SJohn Marino
65*86d7f5d3SJohn Marino /* Print the lines that the second file has. */
66*86d7f5d3SJohn Marino if (inserts)
67*86d7f5d3SJohn Marino for (i = first1; i <= last1; i++)
68*86d7f5d3SJohn Marino print_1_line (">", &files[1].linbuf[i]);
69*86d7f5d3SJohn Marino }
70