953 lines
22 KiB
C
953 lines
22 KiB
C
char rcsid[] =
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"$Header: /home/cvs/386BSD/src/gnu/usr.bin/patch/patch.c,v 1.2 1994/02/17 22:16:03 jkh Exp $";
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/* patch - a program to apply diffs to original files
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*
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* Copyright 1986, Larry Wall
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*
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* This program may be copied as long as you don't try to make any
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* money off of it, or pretend that you wrote it.
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*
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* $Log: patch.c,v $
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* Revision 1.2 1994/02/17 22:16:03 jkh
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* From Poul-Henning Kamp - Implement a -C option to verify the integrity of
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* a patch before actually applying it.
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*
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* Revision 1.1.1.1 1993/06/19 14:21:52 paul
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* b-maked patch-2.10
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*
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* Revision 2.0.2.0 90/05/01 22:17:50 davison
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* patch12u: unidiff support added
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*
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* Revision 2.0.1.6 88/06/22 20:46:39 lwall
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* patch12: rindex() wasn't declared
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*
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* Revision 2.0.1.5 88/06/03 15:09:37 lwall
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* patch10: exit code improved.
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* patch10: better support for non-flexfilenames.
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*
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* Revision 2.0.1.4 87/02/16 14:00:04 lwall
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* Short replacement caused spurious "Out of sync" message.
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*
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* Revision 2.0.1.3 87/01/30 22:45:50 lwall
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* Improved diagnostic on sync error.
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* Moved do_ed_script() to pch.c.
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*
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* Revision 2.0.1.2 86/11/21 09:39:15 lwall
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* Fuzz factor caused offset of installed lines.
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*
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* Revision 2.0.1.1 86/10/29 13:10:22 lwall
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* Backwards search could terminate prematurely.
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*
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* Revision 2.0 86/09/17 15:37:32 lwall
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* Baseline for netwide release.
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*
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* Revision 1.5 86/08/01 20:53:24 lwall
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* Changed some %d's to %ld's.
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* Linted.
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*
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* Revision 1.4 86/08/01 19:17:29 lwall
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* Fixes for machines that can't vararg.
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* Added fuzz factor.
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* Generalized -p.
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* General cleanup.
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*
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* 85/08/15 van%ucbmonet@berkeley
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* Changes for 4.3bsd diff -c.
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*
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* Revision 1.3 85/03/26 15:07:43 lwall
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* Frozen.
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*
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* Revision 1.2.1.9 85/03/12 17:03:35 lwall
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* Changed pfp->_file to fileno(pfp).
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*
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* Revision 1.2.1.8 85/03/12 16:30:43 lwall
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* Check i_ptr and i_womp to make sure they aren't null before freeing.
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* Also allow ed output to be suppressed.
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*
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* Revision 1.2.1.7 85/03/12 15:56:13 lwall
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* Added -p option from jromine@uci-750a.
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*
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* Revision 1.2.1.6 85/03/12 12:12:51 lwall
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* Now checks for normalness of file to patch.
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*
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* Revision 1.2.1.5 85/03/12 11:52:12 lwall
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* Added -D (#ifdef) option from joe@fluke.
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*
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* Revision 1.2.1.4 84/12/06 11:14:15 lwall
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* Made smarter about SCCS subdirectories.
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*
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* Revision 1.2.1.3 84/12/05 11:18:43 lwall
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* Added -l switch to do loose string comparison.
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*
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* Revision 1.2.1.2 84/12/04 09:47:13 lwall
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* Failed hunk count not reset on multiple patch file.
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*
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* Revision 1.2.1.1 84/12/04 09:42:37 lwall
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* Branch for sdcrdcf changes.
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*
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* Revision 1.2 84/11/29 13:29:51 lwall
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* Linted. Identifiers uniqified. Fixed i_ptr malloc() bug. Fixed
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* multiple calls to mktemp(). Will now work on machines that can only
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* read 32767 chars. Added -R option for diffs with new and old swapped.
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* Various cosmetic changes.
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*
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* Revision 1.1 84/11/09 17:03:58 lwall
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* Initial revision
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*
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*/
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#include "INTERN.h"
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#include "common.h"
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#include "EXTERN.h"
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#include "version.h"
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#include "util.h"
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#include "pch.h"
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#include "inp.h"
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#include "backupfile.h"
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#include "getopt.h"
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/* procedures */
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void reinitialize_almost_everything();
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void get_some_switches();
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LINENUM locate_hunk();
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void abort_hunk();
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void apply_hunk();
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void init_output();
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void init_reject();
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void copy_till();
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void spew_output();
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void dump_line();
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bool patch_match();
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bool similar();
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void re_input();
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void my_exit();
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/* TRUE if -E was specified on command line. */
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static int remove_empty_files = FALSE;
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/* TRUE if -R was specified on command line. */
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static int reverse_flag_specified = FALSE;
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/* Apply a set of diffs as appropriate. */
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int
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main(argc,argv)
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int argc;
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char **argv;
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{
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LINENUM where;
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LINENUM newwhere;
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LINENUM fuzz;
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LINENUM mymaxfuzz;
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int hunk = 0;
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int failed = 0;
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int failtotal = 0;
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bool rev_okayed = 0;
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int i;
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setbuf(stderr, serrbuf);
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for (i = 0; i<MAXFILEC; i++)
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filearg[i] = Nullch;
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myuid = getuid();
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/* Cons up the names of the temporary files. */
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{
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/* Directory for temporary files. */
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char *tmpdir;
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int tmpname_len;
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tmpdir = getenv ("TMPDIR");
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if (tmpdir == NULL) {
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tmpdir = "/tmp";
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}
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tmpname_len = strlen (tmpdir) + 20;
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TMPOUTNAME = (char *) malloc (tmpname_len);
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strcpy (TMPOUTNAME, tmpdir);
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strcat (TMPOUTNAME, "/patchoXXXXXX");
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Mktemp(TMPOUTNAME);
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TMPINNAME = (char *) malloc (tmpname_len);
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strcpy (TMPINNAME, tmpdir);
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strcat (TMPINNAME, "/patchiXXXXXX");
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Mktemp(TMPINNAME);
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TMPREJNAME = (char *) malloc (tmpname_len);
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strcpy (TMPREJNAME, tmpdir);
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strcat (TMPREJNAME, "/patchrXXXXXX");
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Mktemp(TMPREJNAME);
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TMPPATNAME = (char *) malloc (tmpname_len);
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strcpy (TMPPATNAME, tmpdir);
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strcat (TMPPATNAME, "/patchpXXXXXX");
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Mktemp(TMPPATNAME);
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}
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{
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char *v;
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v = getenv ("SIMPLE_BACKUP_SUFFIX");
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if (v)
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simple_backup_suffix = v;
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else
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simple_backup_suffix = ".orig";
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#ifndef NODIR
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v = getenv ("VERSION_CONTROL");
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backup_type = get_version (v); /* OK to pass NULL. */
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#endif
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}
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/* parse switches */
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Argc = argc;
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Argv = argv;
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get_some_switches();
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/* make sure we clean up /tmp in case of disaster */
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set_signals(0);
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for (
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open_patch_file(filearg[1]);
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there_is_another_patch();
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reinitialize_almost_everything()
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) { /* for each patch in patch file */
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if (outname == Nullch)
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outname = savestr(filearg[0]);
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/* for ed script just up and do it and exit */
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if (diff_type == ED_DIFF) {
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do_ed_script();
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continue;
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}
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/* initialize the patched file */
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if (!skip_rest_of_patch)
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init_output(TMPOUTNAME);
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/* initialize reject file */
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init_reject(TMPREJNAME);
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/* find out where all the lines are */
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if (!skip_rest_of_patch)
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scan_input(filearg[0]);
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/* from here on, open no standard i/o files, because malloc */
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/* might misfire and we can't catch it easily */
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/* apply each hunk of patch */
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hunk = 0;
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failed = 0;
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rev_okayed = FALSE;
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out_of_mem = FALSE;
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while (another_hunk()) {
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hunk++;
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fuzz = Nulline;
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mymaxfuzz = pch_context();
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if (maxfuzz < mymaxfuzz)
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mymaxfuzz = maxfuzz;
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if (!skip_rest_of_patch) {
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do {
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where = locate_hunk(fuzz);
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if (hunk == 1 && where == Nulline && !(force|rev_okayed)) {
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/* dwim for reversed patch? */
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if (!pch_swap()) {
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if (fuzz == Nulline)
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say1(
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"Not enough memory to try swapped hunk! Assuming unswapped.\n");
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continue;
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}
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reverse = !reverse;
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where = locate_hunk(fuzz); /* try again */
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if (where == Nulline) { /* didn't find it swapped */
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if (!pch_swap()) /* put it back to normal */
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fatal1("lost hunk on alloc error!\n");
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reverse = !reverse;
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}
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else if (noreverse) {
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if (!pch_swap()) /* put it back to normal */
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fatal1("lost hunk on alloc error!\n");
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reverse = !reverse;
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say1(
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"Ignoring previously applied (or reversed) patch.\n");
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skip_rest_of_patch = TRUE;
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}
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else if (batch) {
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if (verbose)
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say3(
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"%seversed (or previously applied) patch detected! %s -R.",
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reverse ? "R" : "Unr",
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reverse ? "Assuming" : "Ignoring");
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}
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else {
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ask3(
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"%seversed (or previously applied) patch detected! %s -R? [y] ",
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reverse ? "R" : "Unr",
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reverse ? "Assume" : "Ignore");
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if (*buf == 'n') {
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ask1("Apply anyway? [n] ");
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if (*buf == 'y')
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rev_okayed = TRUE;
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else
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skip_rest_of_patch = TRUE;
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where = Nulline;
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reverse = !reverse;
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if (!pch_swap()) /* put it back to normal */
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fatal1("lost hunk on alloc error!\n");
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}
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}
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}
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} while (!skip_rest_of_patch && where == Nulline &&
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++fuzz <= mymaxfuzz);
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if (skip_rest_of_patch) { /* just got decided */
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Fclose(ofp);
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ofp = Nullfp;
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}
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}
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newwhere = pch_newfirst() + last_offset;
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if (skip_rest_of_patch) {
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abort_hunk();
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failed++;
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if (verbose)
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say3("Hunk #%d ignored at %ld.\n", hunk, newwhere);
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}
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else if (where == Nulline) {
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abort_hunk();
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failed++;
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if (verbose)
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say3("Hunk #%d failed at %ld.\n", hunk, newwhere);
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}
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else {
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apply_hunk(where);
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if (verbose) {
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say3("Hunk #%d succeeded at %ld", hunk, newwhere);
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if (fuzz)
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say2(" with fuzz %ld", fuzz);
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if (last_offset)
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say3(" (offset %ld line%s)",
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last_offset, last_offset==1L?"":"s");
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say1(".\n");
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}
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}
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}
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if (out_of_mem && using_plan_a) {
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optind = optind_last;
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say1("\n\nRan out of memory using Plan A--trying again...\n\n");
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if (ofp)
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Fclose(ofp);
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ofp = Nullfp;
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if (rejfp)
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Fclose(rejfp);
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rejfp = Nullfp;
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continue;
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}
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assert(hunk);
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/* finish spewing out the new file */
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if (!skip_rest_of_patch)
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spew_output();
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/* and put the output where desired */
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ignore_signals();
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if (!skip_rest_of_patch) {
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struct stat statbuf;
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char *realout = outname;
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if (move_file(TMPOUTNAME, outname) < 0) {
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toutkeep = TRUE;
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realout = TMPOUTNAME;
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chmod(TMPOUTNAME, filemode);
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}
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else
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chmod(outname, filemode);
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if (remove_empty_files && stat(realout, &statbuf) == 0
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&& statbuf.st_size == 0) {
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if (verbose)
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say2("Removing %s (empty after patching).\n", realout);
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while (unlink(realout) >= 0) ; /* while is for Eunice. */
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}
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}
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Fclose(rejfp);
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rejfp = Nullfp;
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if (failed) {
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failtotal += failed;
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if (!*rejname) {
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Strcpy(rejname, outname);
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addext(rejname, ".rej", '#');
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}
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if (skip_rest_of_patch) {
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say4("%d out of %d hunks ignored--saving rejects to %s\n",
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failed, hunk, rejname);
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}
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else {
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say4("%d out of %d hunks failed--saving rejects to %s\n",
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failed, hunk, rejname);
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}
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if (move_file(TMPREJNAME, rejname) < 0)
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trejkeep = TRUE;
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}
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set_signals(1);
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}
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my_exit(failtotal);
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}
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/* Prepare to find the next patch to do in the patch file. */
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void
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reinitialize_almost_everything()
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{
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re_patch();
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re_input();
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input_lines = 0;
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last_frozen_line = 0;
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filec = 0;
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if (filearg[0] != Nullch && !out_of_mem) {
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free(filearg[0]);
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filearg[0] = Nullch;
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}
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if (outname != Nullch) {
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free(outname);
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outname = Nullch;
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}
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last_offset = 0;
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diff_type = 0;
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if (revision != Nullch) {
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free(revision);
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revision = Nullch;
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}
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reverse = reverse_flag_specified;
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skip_rest_of_patch = FALSE;
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get_some_switches();
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if (filec >= 2)
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fatal1("you may not change to a different patch file\n");
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}
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static char *shortopts = "-b:B:cd:D:eEfF:lnNo:p::r:RsStuvV:x:";
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static struct option longopts[] =
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{
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{"suffix", 1, NULL, 'b'},
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{"prefix", 1, NULL, 'B'},
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{"context", 0, NULL, 'c'},
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{"directory", 1, NULL, 'd'},
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{"ifdef", 1, NULL, 'D'},
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{"ed", 0, NULL, 'e'},
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{"remove-empty-files", 0, NULL, 'E'},
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{"force", 0, NULL, 'f'},
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{"fuzz", 1, NULL, 'F'},
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{"ignore-whitespace", 0, NULL, 'l'},
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{"normal", 0, NULL, 'n'},
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{"forward", 0, NULL, 'N'},
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{"output", 1, NULL, 'o'},
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{"strip", 2, NULL, 'p'},
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{"reject-file", 1, NULL, 'r'},
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{"reverse", 0, NULL, 'R'},
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{"quiet", 0, NULL, 's'},
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{"silent", 0, NULL, 's'},
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{"skip", 0, NULL, 'S'},
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{"batch", 0, NULL, 't'},
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{"unified", 0, NULL, 'u'},
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{"version", 0, NULL, 'v'},
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{"version-control", 1, NULL, 'V'},
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{"debug", 1, NULL, 'x'},
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{0, 0, 0, 0}
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};
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/* Process switches and filenames up to next '+' or end of list. */
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void
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get_some_switches()
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{
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Reg1 int optc;
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rejname[0] = '\0';
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optind_last = optind;
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if (optind == Argc)
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return;
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while ((optc = getopt_long (Argc, Argv, shortopts, longopts, (int *) 0))
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!= -1) {
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if (optc == 1) {
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if (strEQ(optarg, "+"))
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return;
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if (filec == MAXFILEC)
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fatal1("too many file arguments\n");
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filearg[filec++] = savestr(optarg);
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}
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else {
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switch (optc) {
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case 'b':
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simple_backup_suffix = savestr(optarg);
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break;
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case 'B':
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origprae = savestr(optarg);
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break;
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case 'c':
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diff_type = CONTEXT_DIFF;
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break;
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case 'd':
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if (chdir(optarg) < 0)
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pfatal2("can't cd to %s", optarg);
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break;
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case 'D':
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do_defines = TRUE;
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if (!isalpha(*optarg) && '_' != *optarg)
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fatal1("argument to -D is not an identifier\n");
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Sprintf(if_defined, "#ifdef %s\n", optarg);
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Sprintf(not_defined, "#ifndef %s\n", optarg);
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Sprintf(end_defined, "#endif /* %s */\n", optarg);
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break;
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case 'e':
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diff_type = ED_DIFF;
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break;
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case 'E':
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remove_empty_files = TRUE;
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break;
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case 'f':
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force = TRUE;
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break;
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case 'F':
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maxfuzz = atoi(optarg);
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break;
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case 'l':
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canonicalize = TRUE;
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break;
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case 'n':
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diff_type = NORMAL_DIFF;
|
|
break;
|
|
case 'N':
|
|
noreverse = TRUE;
|
|
break;
|
|
case 'o':
|
|
outname = savestr(optarg);
|
|
break;
|
|
case 'p':
|
|
if (optarg)
|
|
strippath = atoi(optarg);
|
|
else
|
|
strippath = 0;
|
|
break;
|
|
case 'r':
|
|
Strcpy(rejname, optarg);
|
|
break;
|
|
case 'R':
|
|
reverse = TRUE;
|
|
reverse_flag_specified = TRUE;
|
|
break;
|
|
case 's':
|
|
verbose = FALSE;
|
|
break;
|
|
case 'S':
|
|
skip_rest_of_patch = TRUE;
|
|
break;
|
|
case 't':
|
|
batch = TRUE;
|
|
break;
|
|
case 'u':
|
|
diff_type = UNI_DIFF;
|
|
break;
|
|
case 'v':
|
|
version();
|
|
break;
|
|
case 'V':
|
|
#ifndef NODIR
|
|
backup_type = get_version (optarg);
|
|
#endif
|
|
break;
|
|
#ifdef DEBUGGING
|
|
case 'x':
|
|
debug = atoi(optarg);
|
|
break;
|
|
#endif
|
|
default:
|
|
fprintf(stderr, "\
|
|
Usage: %s [options] [origfile [patchfile]] [+ [options] [origfile]]...\n",
|
|
Argv[0]);
|
|
fprintf(stderr, "\
|
|
Options:\n\
|
|
[-ceEflnNRsStuv] [-b backup-ext] [-B backup-prefix] [-d directory]\n\
|
|
[-D symbol] [-F max-fuzz] [-o out-file] [-p[strip-count]]\n\
|
|
[-r rej-name] [-V {numbered,existing,simple}] [--context]\n\
|
|
[--prefix=backup-prefix] [--suffix=backup-ext] [--ifdef=symbol]\n\
|
|
[--directory=directory] [--ed] [--fuzz=max-fuzz] [--force] [--batch]\n\
|
|
[--ignore-whitespace] [--forward] [--reverse] [--output=out-file]\n");
|
|
fprintf(stderr, "\
|
|
[--strip[=strip-count]] [--normal] [--reject-file=rej-name] [--skip]\n\
|
|
[--remove-empty-files] [--quiet] [--silent] [--unified] [--version]\n\
|
|
[--version-control={numbered,existing,simple}]\n");
|
|
my_exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Process any filename args given after "--". */
|
|
for (; optind < Argc; ++optind) {
|
|
if (filec == MAXFILEC)
|
|
fatal1("too many file arguments\n");
|
|
filearg[filec++] = savestr(Argv[optind]);
|
|
}
|
|
}
|
|
|
|
/* Attempt to find the right place to apply this hunk of patch. */
|
|
|
|
LINENUM
|
|
locate_hunk(fuzz)
|
|
LINENUM fuzz;
|
|
{
|
|
Reg1 LINENUM first_guess = pch_first() + last_offset;
|
|
Reg2 LINENUM offset;
|
|
LINENUM pat_lines = pch_ptrn_lines();
|
|
Reg3 LINENUM max_pos_offset = input_lines - first_guess
|
|
- pat_lines + 1;
|
|
Reg4 LINENUM max_neg_offset = first_guess - last_frozen_line - 1
|
|
+ pch_context();
|
|
|
|
if (!pat_lines) /* null range matches always */
|
|
return first_guess;
|
|
if (max_neg_offset >= first_guess) /* do not try lines < 0 */
|
|
max_neg_offset = first_guess - 1;
|
|
if (first_guess <= input_lines && patch_match(first_guess, Nulline, fuzz))
|
|
return first_guess;
|
|
for (offset = 1; ; offset++) {
|
|
Reg5 bool check_after = (offset <= max_pos_offset);
|
|
Reg6 bool check_before = (offset <= max_neg_offset);
|
|
|
|
if (check_after && patch_match(first_guess, offset, fuzz)) {
|
|
#ifdef DEBUGGING
|
|
if (debug & 1)
|
|
say3("Offset changing from %ld to %ld\n", last_offset, offset);
|
|
#endif
|
|
last_offset = offset;
|
|
return first_guess+offset;
|
|
}
|
|
else if (check_before && patch_match(first_guess, -offset, fuzz)) {
|
|
#ifdef DEBUGGING
|
|
if (debug & 1)
|
|
say3("Offset changing from %ld to %ld\n", last_offset, -offset);
|
|
#endif
|
|
last_offset = -offset;
|
|
return first_guess-offset;
|
|
}
|
|
else if (!check_before && !check_after)
|
|
return Nulline;
|
|
}
|
|
}
|
|
|
|
/* We did not find the pattern, dump out the hunk so they can handle it. */
|
|
|
|
void
|
|
abort_hunk()
|
|
{
|
|
Reg1 LINENUM i;
|
|
Reg2 LINENUM pat_end = pch_end();
|
|
/* add in last_offset to guess the same as the previous successful hunk */
|
|
LINENUM oldfirst = pch_first() + last_offset;
|
|
LINENUM newfirst = pch_newfirst() + last_offset;
|
|
LINENUM oldlast = oldfirst + pch_ptrn_lines() - 1;
|
|
LINENUM newlast = newfirst + pch_repl_lines() - 1;
|
|
char *stars = (diff_type >= NEW_CONTEXT_DIFF ? " ****" : "");
|
|
char *minuses = (diff_type >= NEW_CONTEXT_DIFF ? " ----" : " -----");
|
|
|
|
fprintf(rejfp, "***************\n");
|
|
for (i=0; i<=pat_end; i++) {
|
|
switch (pch_char(i)) {
|
|
case '*':
|
|
if (oldlast < oldfirst)
|
|
fprintf(rejfp, "*** 0%s\n", stars);
|
|
else if (oldlast == oldfirst)
|
|
fprintf(rejfp, "*** %ld%s\n", oldfirst, stars);
|
|
else
|
|
fprintf(rejfp, "*** %ld,%ld%s\n", oldfirst, oldlast, stars);
|
|
break;
|
|
case '=':
|
|
if (newlast < newfirst)
|
|
fprintf(rejfp, "--- 0%s\n", minuses);
|
|
else if (newlast == newfirst)
|
|
fprintf(rejfp, "--- %ld%s\n", newfirst, minuses);
|
|
else
|
|
fprintf(rejfp, "--- %ld,%ld%s\n", newfirst, newlast, minuses);
|
|
break;
|
|
case '\n':
|
|
fprintf(rejfp, "%s", pfetch(i));
|
|
break;
|
|
case ' ': case '-': case '+': case '!':
|
|
fprintf(rejfp, "%c %s", pch_char(i), pfetch(i));
|
|
break;
|
|
default:
|
|
fatal1("fatal internal error in abort_hunk\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
/* We found where to apply it (we hope), so do it. */
|
|
|
|
void
|
|
apply_hunk(where)
|
|
LINENUM where;
|
|
{
|
|
Reg1 LINENUM old = 1;
|
|
Reg2 LINENUM lastline = pch_ptrn_lines();
|
|
Reg3 LINENUM new = lastline+1;
|
|
#define OUTSIDE 0
|
|
#define IN_IFNDEF 1
|
|
#define IN_IFDEF 2
|
|
#define IN_ELSE 3
|
|
Reg4 int def_state = OUTSIDE;
|
|
Reg5 bool R_do_defines = do_defines;
|
|
Reg6 LINENUM pat_end = pch_end();
|
|
|
|
where--;
|
|
while (pch_char(new) == '=' || pch_char(new) == '\n')
|
|
new++;
|
|
|
|
while (old <= lastline) {
|
|
if (pch_char(old) == '-') {
|
|
copy_till(where + old - 1);
|
|
if (R_do_defines) {
|
|
if (def_state == OUTSIDE) {
|
|
fputs(not_defined, ofp);
|
|
def_state = IN_IFNDEF;
|
|
}
|
|
else if (def_state == IN_IFDEF) {
|
|
fputs(else_defined, ofp);
|
|
def_state = IN_ELSE;
|
|
}
|
|
fputs(pfetch(old), ofp);
|
|
}
|
|
last_frozen_line++;
|
|
old++;
|
|
}
|
|
else if (new > pat_end) {
|
|
break;
|
|
}
|
|
else if (pch_char(new) == '+') {
|
|
copy_till(where + old - 1);
|
|
if (R_do_defines) {
|
|
if (def_state == IN_IFNDEF) {
|
|
fputs(else_defined, ofp);
|
|
def_state = IN_ELSE;
|
|
}
|
|
else if (def_state == OUTSIDE) {
|
|
fputs(if_defined, ofp);
|
|
def_state = IN_IFDEF;
|
|
}
|
|
}
|
|
fputs(pfetch(new), ofp);
|
|
new++;
|
|
}
|
|
else if (pch_char(new) != pch_char(old)) {
|
|
say3("Out-of-sync patch, lines %ld,%ld--mangled text or line numbers, maybe?\n",
|
|
pch_hunk_beg() + old,
|
|
pch_hunk_beg() + new);
|
|
#ifdef DEBUGGING
|
|
say3("oldchar = '%c', newchar = '%c'\n",
|
|
pch_char(old), pch_char(new));
|
|
#endif
|
|
my_exit(1);
|
|
}
|
|
else if (pch_char(new) == '!') {
|
|
copy_till(where + old - 1);
|
|
if (R_do_defines) {
|
|
fputs(not_defined, ofp);
|
|
def_state = IN_IFNDEF;
|
|
}
|
|
while (pch_char(old) == '!') {
|
|
if (R_do_defines) {
|
|
fputs(pfetch(old), ofp);
|
|
}
|
|
last_frozen_line++;
|
|
old++;
|
|
}
|
|
if (R_do_defines) {
|
|
fputs(else_defined, ofp);
|
|
def_state = IN_ELSE;
|
|
}
|
|
while (pch_char(new) == '!') {
|
|
fputs(pfetch(new), ofp);
|
|
new++;
|
|
}
|
|
}
|
|
else {
|
|
assert(pch_char(new) == ' ');
|
|
old++;
|
|
new++;
|
|
if (R_do_defines && def_state != OUTSIDE) {
|
|
fputs(end_defined, ofp);
|
|
def_state = OUTSIDE;
|
|
}
|
|
}
|
|
}
|
|
if (new <= pat_end && pch_char(new) == '+') {
|
|
copy_till(where + old - 1);
|
|
if (R_do_defines) {
|
|
if (def_state == OUTSIDE) {
|
|
fputs(if_defined, ofp);
|
|
def_state = IN_IFDEF;
|
|
}
|
|
else if (def_state == IN_IFNDEF) {
|
|
fputs(else_defined, ofp);
|
|
def_state = IN_ELSE;
|
|
}
|
|
}
|
|
while (new <= pat_end && pch_char(new) == '+') {
|
|
fputs(pfetch(new), ofp);
|
|
new++;
|
|
}
|
|
}
|
|
if (R_do_defines && def_state != OUTSIDE) {
|
|
fputs(end_defined, ofp);
|
|
}
|
|
}
|
|
|
|
/* Open the new file. */
|
|
|
|
void
|
|
init_output(name)
|
|
char *name;
|
|
{
|
|
ofp = fopen(name, "w");
|
|
if (ofp == Nullfp)
|
|
pfatal2("can't create %s", name);
|
|
}
|
|
|
|
/* Open a file to put hunks we can't locate. */
|
|
|
|
void
|
|
init_reject(name)
|
|
char *name;
|
|
{
|
|
rejfp = fopen(name, "w");
|
|
if (rejfp == Nullfp)
|
|
pfatal2("can't create %s", name);
|
|
}
|
|
|
|
/* Copy input file to output, up to wherever hunk is to be applied. */
|
|
|
|
void
|
|
copy_till(lastline)
|
|
Reg1 LINENUM lastline;
|
|
{
|
|
Reg2 LINENUM R_last_frozen_line = last_frozen_line;
|
|
|
|
if (R_last_frozen_line > lastline)
|
|
fatal1("misordered hunks! output would be garbled\n");
|
|
while (R_last_frozen_line < lastline) {
|
|
dump_line(++R_last_frozen_line);
|
|
}
|
|
last_frozen_line = R_last_frozen_line;
|
|
}
|
|
|
|
/* Finish copying the input file to the output file. */
|
|
|
|
void
|
|
spew_output()
|
|
{
|
|
#ifdef DEBUGGING
|
|
if (debug & 256)
|
|
say3("il=%ld lfl=%ld\n",input_lines,last_frozen_line);
|
|
#endif
|
|
if (input_lines)
|
|
copy_till(input_lines); /* dump remainder of file */
|
|
Fclose(ofp);
|
|
ofp = Nullfp;
|
|
}
|
|
|
|
/* Copy one line from input to output. */
|
|
|
|
void
|
|
dump_line(line)
|
|
LINENUM line;
|
|
{
|
|
Reg1 char *s;
|
|
Reg2 char R_newline = '\n';
|
|
|
|
/* Note: string is not null terminated. */
|
|
for (s=ifetch(line, 0); putc(*s, ofp) != R_newline; s++) ;
|
|
}
|
|
|
|
/* Does the patch pattern match at line base+offset? */
|
|
|
|
bool
|
|
patch_match(base, offset, fuzz)
|
|
LINENUM base;
|
|
LINENUM offset;
|
|
LINENUM fuzz;
|
|
{
|
|
Reg1 LINENUM pline = 1 + fuzz;
|
|
Reg2 LINENUM iline;
|
|
Reg3 LINENUM pat_lines = pch_ptrn_lines() - fuzz;
|
|
|
|
for (iline=base+offset+fuzz; pline <= pat_lines; pline++,iline++) {
|
|
if (canonicalize) {
|
|
if (!similar(ifetch(iline, (offset >= 0)),
|
|
pfetch(pline),
|
|
pch_line_len(pline) ))
|
|
return FALSE;
|
|
}
|
|
else if (strnNE(ifetch(iline, (offset >= 0)),
|
|
pfetch(pline),
|
|
pch_line_len(pline) ))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* Do two lines match with canonicalized white space? */
|
|
|
|
bool
|
|
similar(a,b,len)
|
|
Reg1 char *a;
|
|
Reg2 char *b;
|
|
Reg3 int len;
|
|
{
|
|
while (len) {
|
|
if (isspace(*b)) { /* whitespace (or \n) to match? */
|
|
if (!isspace(*a)) /* no corresponding whitespace? */
|
|
return FALSE;
|
|
while (len && isspace(*b) && *b != '\n')
|
|
b++,len--; /* skip pattern whitespace */
|
|
while (isspace(*a) && *a != '\n')
|
|
a++; /* skip target whitespace */
|
|
if (*a == '\n' || *b == '\n')
|
|
return (*a == *b); /* should end in sync */
|
|
}
|
|
else if (*a++ != *b++) /* match non-whitespace chars */
|
|
return FALSE;
|
|
else
|
|
len--; /* probably not necessary */
|
|
}
|
|
return TRUE; /* actually, this is not reached */
|
|
/* since there is always a \n */
|
|
}
|
|
|
|
/* Exit with cleanup. */
|
|
|
|
void
|
|
my_exit(status)
|
|
int status;
|
|
{
|
|
Unlink(TMPINNAME);
|
|
if (!toutkeep) {
|
|
Unlink(TMPOUTNAME);
|
|
}
|
|
if (!trejkeep) {
|
|
Unlink(TMPREJNAME);
|
|
}
|
|
Unlink(TMPPATNAME);
|
|
exit(status);
|
|
}
|