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- /* #ifdef-format output routines for GNU DIFF.
- Copyright (C) 1989 Free Software Foundation, Inc.
-
- This file is part of GNU DIFF.
-
- GNU DIFF is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY. No author or distributor
- accepts responsibility to anyone for the consequences of using it
- or for whether it serves any particular purpose or works at all,
- unless he says so in writing. Refer to the GNU DIFF General Public
- License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- GNU DIFF, but only under the conditions described in the
- GNU DIFF General Public License. A copy of this license is
- supposed to have been given to you along with GNU DIFF so you
- can know your rights and responsibilities. It should be in a
- file named COPYING. Among other things, the copyright notice
- and this notice must be preserved on all copies. */
- /* MS-DOS port (c) 1990 by Thorsten Ohl, ohl@gnu.ai.mit.edu
- This port is also distributed under the terms of the GNU General
- Public License as published by the Free Software Foundation.
-
- Please note that this file is not identical to the original GNU release,
- you should have received this code as patch to the official release.
-
- $Header: e:/gnu/diff/RCS/ifdef.c 1.15.0.1 91/03/11 22:12:20 tho Exp $ */
-
- #include "diff.h"
-
- #ifdef __STDC__
- static void print_ifdef_hunk(struct change *);
- #else
- static void print_ifdef_hunk ();
- struct change *find_change ();
- #endif /* __STDC__ */
-
- static int next_line;
-
- /* Print the edit-script SCRIPT as a merged #ifdef file. */
-
- void
- print_ifdef_script (script)
- struct change *script;
- {
- next_line = 0;
- print_script (script, find_change, print_ifdef_hunk);
- while (next_line < files[0].buffered_lines)
- print_1_line ("", &files[0].linbuf[next_line++]);
- }
-
- /* Print a hunk of an ifdef diff.
- This is a contiguous portion of a complete edit script,
- describing changes in consecutive lines. */
-
- static void
- print_ifdef_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;
-
- /* Print out lines up to this change. */
- while (next_line < first0)
- print_1_line ("", &files[0].linbuf[next_line++]);
-
- /* Print out stuff deleted from first file. */
- if (deletes)
- {
- fprintf (outfile, "#ifndef %s\n", ifdef_string);
- for (i = first0; i <= last0; i++)
- print_1_line ("", &files[0].linbuf[i]);
- next_line = i;
- }
-
- /* Print out stuff inserted from second file. */
- if (inserts)
- {
- if (deletes)
- fprintf (outfile, "#else /* %s */\n", ifdef_string);
- else
- fprintf (outfile, "#ifdef %s\n", ifdef_string);
- for (i = first1; i <= last1; i++)
- print_1_line ("", &files[1].linbuf[i]);
- }
-
- if (inserts)
- fprintf (outfile, "#endif /* %s */\n", ifdef_string);
- else
- fprintf (outfile, "#endif /* not %s */\n", ifdef_string);
- }
-