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615 lines
15 KiB
C
615 lines
15 KiB
C
/*
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* Copyright (c) 1992, Brian Berliner and Jeff Polk
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* Copyright (c) 1989-1992, Brian Berliner
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*
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* You may distribute under the terms of the GNU General Public License as
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* specified in the README file that comes with the CVS 1.4 kit.
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*
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* Patch
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*
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* Create a Larry Wall format "patch" file between a previous release and the
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* current head of a module, or between two releases. Can specify the
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* release as either a date or a revision number.
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*/
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#include "cvs.h"
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#include "getline.h"
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#ifndef lint
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static const char rcsid[] = "$CVSid: @(#)patch.c 1.57 94/09/30 $";
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USE(rcsid);
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#endif
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static RETSIGTYPE patch_cleanup PROTO((void));
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static Dtype patch_dirproc PROTO((char *dir, char *repos, char *update_dir));
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static int patch_fileproc PROTO((char *file, char *update_dir, char *repository,
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List * entries, List * srcfiles));
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static int patch_proc PROTO((int *pargc, char **argv, char *xwhere,
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char *mwhere, char *mfile, int shorten,
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int local_specified, char *mname, char *msg));
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static int force_tag_match = 1;
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static int patch_short = 0;
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static int toptwo_diffs = 0;
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static int local = 0;
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static char *options = NULL;
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static char *rev1 = NULL;
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static char *rev2 = NULL;
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static char *date1 = NULL;
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static char *date2 = NULL;
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static char tmpfile1[L_tmpnam+1], tmpfile2[L_tmpnam+1], tmpfile3[L_tmpnam+1];
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static int unidiff = 0;
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static const char *const patch_usage[] =
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{
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"Usage: %s %s [-fl] [-c|-u] [-s|-t] [-V %%d]\n",
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" -r rev|-D date [-r rev2 | -D date2] modules...\n",
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"\t-f\tForce a head revision match if tag/date not found.\n",
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"\t-l\tLocal directory only, not recursive\n",
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"\t-c\tContext diffs (default)\n",
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"\t-u\tUnidiff format.\n",
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"\t-s\tShort patch - one liner per file.\n",
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"\t-t\tTop two diffs - last change made to the file.\n",
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"\t-D date\tDate.\n",
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"\t-r rev\tRevision - symbolic or numeric.\n",
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"\t-V vers\tUse RCS Version \"vers\" for keyword expansion.\n",
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NULL
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};
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int
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patch (argc, argv)
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int argc;
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char **argv;
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{
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register int i;
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int c;
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int err = 0;
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DBM *db;
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if (argc == -1)
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usage (patch_usage);
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optind = 1;
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while ((c = getopt (argc, argv, "V:k:cuftsQqlRD:r:")) != -1)
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{
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switch (c)
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{
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case 'Q':
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case 'q':
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#ifdef SERVER_SUPPORT
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/* The CVS 1.5 client sends these options (in addition to
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Global_option requests), so we must ignore them. */
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if (!server_active)
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#endif
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error (1, 0,
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"-q or -Q must be specified before \"%s\"",
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command_name);
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break;
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case 'f':
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force_tag_match = 0;
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break;
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case 'l':
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local = 1;
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break;
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case 'R':
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local = 0;
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break;
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case 't':
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toptwo_diffs = 1;
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break;
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case 's':
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patch_short = 1;
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break;
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case 'D':
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if (rev2 != NULL || date2 != NULL)
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error (1, 0,
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"no more than two revisions/dates can be specified");
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if (rev1 != NULL || date1 != NULL)
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date2 = Make_Date (optarg);
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else
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date1 = Make_Date (optarg);
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break;
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case 'r':
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if (rev2 != NULL || date2 != NULL)
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error (1, 0,
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"no more than two revisions/dates can be specified");
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if (rev1 != NULL || date1 != NULL)
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rev2 = optarg;
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else
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rev1 = optarg;
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break;
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case 'k':
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if (options)
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free (options);
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options = RCS_check_kflag (optarg);
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break;
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case 'V':
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if (atoi (optarg) <= 0)
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error (1, 0, "must specify a version number to -V");
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if (options)
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free (options);
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options = xmalloc (strlen (optarg) + 1 + 2); /* for the -V */
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(void) sprintf (options, "-V%s", optarg);
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break;
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case 'u':
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unidiff = 1; /* Unidiff */
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break;
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case 'c': /* Context diff */
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unidiff = 0;
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break;
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case '?':
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default:
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usage (patch_usage);
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break;
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}
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}
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argc -= optind;
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argv += optind;
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/* Sanity checks */
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if (argc < 1)
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usage (patch_usage);
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if (toptwo_diffs && patch_short)
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error (1, 0, "-t and -s options are mutually exclusive");
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if (toptwo_diffs && (date1 != NULL || date2 != NULL ||
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rev1 != NULL || rev2 != NULL))
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error (1, 0, "must not specify revisions/dates with -t option!");
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if (!toptwo_diffs && (date1 == NULL && date2 == NULL &&
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rev1 == NULL && rev2 == NULL))
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error (1, 0, "must specify at least one revision/date!");
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if (date1 != NULL && date2 != NULL)
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if (RCS_datecmp (date1, date2) >= 0)
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error (1, 0, "second date must come after first date!");
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/* if options is NULL, make it a NULL string */
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if (options == NULL)
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options = xstrdup ("");
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#ifdef CLIENT_SUPPORT
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if (client_active)
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{
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/* We're the client side. Fire up the remote server. */
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start_server ();
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ign_setup ();
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if (local)
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send_arg("-l");
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if (force_tag_match)
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send_arg("-f");
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if (toptwo_diffs)
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send_arg("-t");
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if (patch_short)
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send_arg("-s");
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if (unidiff)
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send_arg("-u");
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if (rev1)
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option_with_arg ("-r", rev1);
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if (date1)
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client_senddate (date1);
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if (rev2)
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option_with_arg ("-r", rev2);
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if (date2)
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client_senddate (date2);
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if (options[0] != '\0')
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send_arg (options);
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{
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int i;
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for (i = 0; i < argc; ++i)
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send_arg (argv[i]);
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}
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if (fprintf (to_server, "rdiff\n") < 0)
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error (1, errno, "writing to server");
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return get_responses_and_close ();
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}
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#endif
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/* clean up if we get a signal */
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#ifdef SIGHUP
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(void) SIG_register (SIGHUP, patch_cleanup);
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#endif
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#ifdef SIGINT
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(void) SIG_register (SIGINT, patch_cleanup);
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#endif
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#ifdef SIGQUIT
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(void) SIG_register (SIGQUIT, patch_cleanup);
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#endif
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#ifdef SIGPIPE
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(void) SIG_register (SIGPIPE, patch_cleanup);
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#endif
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#ifdef SIGTERM
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(void) SIG_register (SIGTERM, patch_cleanup);
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#endif
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db = open_module ();
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for (i = 0; i < argc; i++)
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err += do_module (db, argv[i], PATCH, "Patching", patch_proc,
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(char *) NULL, 0, 0, 0, (char *) NULL);
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close_module (db);
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free (options);
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patch_cleanup ();
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return (err);
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}
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/*
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* callback proc for doing the real work of patching
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*/
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/* ARGSUSED */
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static char where[PATH_MAX];
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static int
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patch_proc (pargc, argv, xwhere, mwhere, mfile, shorten, local_specified,
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mname, msg)
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int *pargc;
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char **argv;
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char *xwhere;
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char *mwhere;
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char *mfile;
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int shorten;
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int local_specified;
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char *mname;
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char *msg;
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{
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int err = 0;
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int which;
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char repository[PATH_MAX];
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(void) sprintf (repository, "%s/%s", CVSroot, argv[0]);
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(void) strcpy (where, argv[0]);
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/* if mfile isn't null, we need to set up to do only part of the module */
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if (mfile != NULL)
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{
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char *cp;
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char path[PATH_MAX];
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/* if the portion of the module is a path, put the dir part on repos */
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if ((cp = strrchr (mfile, '/')) != NULL)
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{
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*cp = '\0';
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(void) strcat (repository, "/");
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(void) strcat (repository, mfile);
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(void) strcat (where, "/");
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(void) strcat (where, mfile);
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mfile = cp + 1;
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}
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/* take care of the rest */
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(void) sprintf (path, "%s/%s", repository, mfile);
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if (isdir (path))
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{
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/* directory means repository gets the dir tacked on */
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(void) strcpy (repository, path);
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(void) strcat (where, "/");
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(void) strcat (where, mfile);
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}
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else
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{
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int i;
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/* a file means muck argv */
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for (i = 1; i < *pargc; i++)
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free (argv[i]);
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argv[1] = xstrdup (mfile);
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(*pargc) = 2;
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}
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}
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/* cd to the starting repository */
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if (chdir (repository) < 0)
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{
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error (0, errno, "cannot chdir to %s", repository);
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return (1);
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}
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if (force_tag_match)
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which = W_REPOS | W_ATTIC;
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else
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which = W_REPOS;
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/* start the recursion processor */
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err = start_recursion (patch_fileproc, (FILESDONEPROC) NULL, patch_dirproc,
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(DIRLEAVEPROC) NULL, *pargc - 1, argv + 1, local,
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which, 0, 1, where, 1, 1);
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return (err);
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}
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/*
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* Called to examine a particular RCS file, as appropriate with the options
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* that were set above.
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*/
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/* ARGSUSED */
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static int
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patch_fileproc (file, update_dir, repository, entries, srcfiles)
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char *file;
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char *update_dir;
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char *repository;
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List *entries;
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List *srcfiles;
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{
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struct utimbuf t;
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char *vers_tag, *vers_head;
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char rcsspace[PATH_MAX];
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char *rcs = rcsspace;
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Node *p;
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RCSNode *rcsfile;
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FILE *fp1, *fp2, *fp3;
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int ret = 0;
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int isattic = 0;
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int retcode = 0;
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char file1[PATH_MAX], file2[PATH_MAX], strippath[PATH_MAX];
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char *line1, *line2;
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size_t line1_chars_allocated;
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size_t line2_chars_allocated;
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char *cp1, *cp2, *commap;
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FILE *fp;
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/* find the parsed rcs file */
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p = findnode (srcfiles, file);
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if (p == NULL)
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return (1);
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rcsfile = (RCSNode *) p->data;
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if ((rcsfile->flags & VALID) && (rcsfile->flags & INATTIC))
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isattic = 1;
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(void) sprintf (rcs, "%s%s", file, RCSEXT);
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/* if vers_head is NULL, may have been removed from the release */
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if (isattic && rev2 == NULL && date2 == NULL)
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vers_head = NULL;
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else
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vers_head = RCS_getversion (rcsfile, rev2, date2, force_tag_match, 0);
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if (toptwo_diffs)
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{
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if (vers_head == NULL)
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return (1);
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if (!date1)
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date1 = xmalloc (50); /* plenty big :-) */
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*date1 = '\0';
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if (RCS_getrevtime (rcsfile, vers_head, date1, 1) == -1)
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{
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if (!really_quiet)
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error (0, 0, "cannot find date in rcs file %s revision %s",
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rcs, vers_head);
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return (1);
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}
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}
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vers_tag = RCS_getversion (rcsfile, rev1, date1, force_tag_match, 0);
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if (vers_tag == NULL && (vers_head == NULL || isattic))
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return (0); /* nothing known about specified revs */
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if (vers_tag && vers_head && strcmp (vers_head, vers_tag) == 0)
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return (0); /* not changed between releases */
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if (patch_short)
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{
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(void) printf ("File ");
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if (vers_tag == NULL)
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(void) printf ("%s is new; current revision %s\n", rcs, vers_head);
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else if (vers_head == NULL)
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#ifdef DEATH_SUPPORT
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{
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(void) printf ("%s is removed; not included in ", rcs);
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if (rev2 != NULL)
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(void) printf ("release tag %s", rev2);
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else if (date2 != NULL)
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(void) printf ("release date %s", date2);
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else
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(void) printf ("current release");
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(void) printf ("\n");
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}
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#else
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(void) printf ("%s is removed; not included in release %s\n",
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rcs, rev2 ? rev2 : date2);
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#endif
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else
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(void) printf ("%s changed from revision %s to %s\n",
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rcs, vers_tag, vers_head);
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return (0);
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}
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if ((fp1 = fopen (tmpnam (tmpfile1), "w+")) != NULL)
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(void) fclose (fp1);
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if ((fp2 = fopen (tmpnam (tmpfile2), "w+")) != NULL)
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(void) fclose (fp2);
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if ((fp3 = fopen (tmpnam (tmpfile3), "w+")) != NULL)
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(void) fclose (fp3);
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if (fp1 == NULL || fp2 == NULL || fp3 == NULL)
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{
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error (0, 0, "cannot create temporary files");
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ret = 1;
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goto out;
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}
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if (vers_tag != NULL)
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{
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run_setup ("%s%s %s -p -q -r%s", Rcsbin, RCS_CO, options, vers_tag);
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run_arg (rcsfile->path);
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if ((retcode = run_exec (RUN_TTY, tmpfile1, RUN_TTY, RUN_NORMAL)) != 0)
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{
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if (!really_quiet)
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error (retcode == -1 ? 1 : 0, retcode == -1 ? errno : 0,
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"co of revision %s in %s failed", vers_tag, rcs);
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ret = 1;
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goto out;
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}
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memset ((char *) &t, 0, sizeof (t));
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if ((t.actime = t.modtime = RCS_getrevtime (rcsfile, vers_tag,
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(char *) 0, 0)) != -1)
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(void) utime (tmpfile1, &t);
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}
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else if (toptwo_diffs)
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{
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ret = 1;
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goto out;
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}
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if (vers_head != NULL)
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{
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run_setup ("%s%s %s -p -q -r%s", Rcsbin, RCS_CO, options, vers_head);
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run_arg (rcsfile->path);
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if ((retcode = run_exec (RUN_TTY, tmpfile2, RUN_TTY, RUN_NORMAL)) != 0)
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{
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if (!really_quiet)
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error (retcode == -1 ? 1 : 0, retcode == -1 ? errno : 0,
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"co of revision %s in %s failed", vers_head, rcs);
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ret = 1;
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goto out;
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}
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if ((t.actime = t.modtime = RCS_getrevtime (rcsfile, vers_head,
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(char *) 0, 0)) != -1)
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(void) utime (tmpfile2, &t);
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}
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run_setup ("%s -%c", DIFF, unidiff ? 'u' : 'c');
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run_arg (tmpfile1);
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run_arg (tmpfile2);
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line1 = NULL;
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line1_chars_allocated = 0;
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line2 = NULL;
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line2_chars_allocated = 0;
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switch (run_exec (RUN_TTY, tmpfile3, RUN_TTY, RUN_NORMAL))
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{
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case -1: /* fork/wait failure */
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error (1, errno, "fork for diff failed on %s", rcs);
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break;
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case 0: /* nothing to do */
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break;
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case 1:
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/*
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* The two revisions are really different, so read the first two
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* lines of the diff output file, and munge them to include more
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* reasonable file names that "patch" will understand.
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*/
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/* Output an "Index:" line for patch to use */
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(void) fflush (stdout);
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if (update_dir[0])
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(void) printf ("Index: %s/%s\n", update_dir, file);
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else
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(void) printf ("Index: %s\n", file);
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(void) fflush (stdout);
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fp = open_file (tmpfile3, "r");
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if (getline (&line1, &line1_chars_allocated, fp) < 0 ||
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getline (&line2, &line2_chars_allocated, fp) < 0)
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{
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error (0, errno, "failed to read diff file header %s for %s",
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tmpfile3, rcs);
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ret = 1;
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(void) fclose (fp);
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goto out;
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}
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if (!unidiff)
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{
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if (strncmp (line1, "*** ", 4) != 0 ||
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strncmp (line2, "--- ", 4) != 0 ||
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(cp1 = strchr (line1, '\t')) == NULL ||
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(cp2 = strchr (line2, '\t')) == NULL)
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{
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|
error (0, 0, "invalid diff header for %s", rcs);
|
|
ret = 1;
|
|
(void) fclose (fp);
|
|
goto out;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (strncmp (line1, "--- ", 4) != 0 ||
|
|
strncmp (line2, "+++ ", 4) != 0 ||
|
|
(cp1 = strchr (line1, '\t')) == NULL ||
|
|
(cp2 = strchr (line2, '\t')) == NULL)
|
|
{
|
|
error (0, 0, "invalid unidiff header for %s", rcs);
|
|
ret = 1;
|
|
(void) fclose (fp);
|
|
goto out;
|
|
}
|
|
}
|
|
if (CVSroot != NULL)
|
|
(void) sprintf (strippath, "%s/", CVSroot);
|
|
else
|
|
(void) strcpy (strippath, REPOS_STRIP);
|
|
if (strncmp (rcs, strippath, strlen (strippath)) == 0)
|
|
rcs += strlen (strippath);
|
|
commap = strrchr (rcs, ',');
|
|
*commap = '\0';
|
|
if (vers_tag != NULL)
|
|
{
|
|
(void) sprintf (file1, "%s%s%s:%s", update_dir,
|
|
update_dir[0] ? "/" : "", rcs, vers_tag);
|
|
}
|
|
else
|
|
{
|
|
(void) strcpy (file1, DEVNULL);
|
|
}
|
|
(void) sprintf (file2, "%s%s%s:%s", update_dir,
|
|
update_dir[0] ? "/" : "", rcs,
|
|
vers_head ? vers_head : "removed");
|
|
if (unidiff)
|
|
{
|
|
(void) printf ("diff -u %s %s\n", file1, file2);
|
|
(void) printf ("--- %s%s+++ ", file1, cp1);
|
|
}
|
|
else
|
|
{
|
|
(void) printf ("diff -c %s %s\n", file1, file2);
|
|
(void) printf ("*** %s%s--- ", file1, cp1);
|
|
}
|
|
|
|
if (update_dir[0] != '\0')
|
|
(void) printf ("%s/", update_dir);
|
|
(void) printf ("%s%s", rcs, cp2);
|
|
/* spew the rest of the diff out */
|
|
while (getline (&line1, &line1_chars_allocated, fp) >= 0)
|
|
(void) fputs (line1, stdout);
|
|
(void) fclose (fp);
|
|
break;
|
|
default:
|
|
error (0, 0, "diff failed for %s", rcs);
|
|
}
|
|
out:
|
|
if (line1)
|
|
free (line1);
|
|
if (line2)
|
|
free (line2);
|
|
(void) unlink_file (tmpfile1);
|
|
(void) unlink_file (tmpfile2);
|
|
(void) unlink_file (tmpfile3);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Print a warm fuzzy message
|
|
*/
|
|
/* ARGSUSED */
|
|
static Dtype
|
|
patch_dirproc (dir, repos, update_dir)
|
|
char *dir;
|
|
char *repos;
|
|
char *update_dir;
|
|
{
|
|
if (!quiet)
|
|
error (0, 0, "Diffing %s", update_dir);
|
|
return (R_PROCESS);
|
|
}
|
|
|
|
/*
|
|
* Clean up temporary files
|
|
*/
|
|
static RETSIGTYPE
|
|
patch_cleanup ()
|
|
{
|
|
if (tmpfile1[0] != '\0')
|
|
(void) unlink_file (tmpfile1);
|
|
if (tmpfile2[0] != '\0')
|
|
(void) unlink_file (tmpfile2);
|
|
if (tmpfile3[0] != '\0')
|
|
(void) unlink_file (tmpfile3);
|
|
}
|