home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 1992, Brian Berliner and Jeff Polk
- * Copyright (c) 1989-1992, Brian Berliner
- *
- * You may distribute under the terms of the GNU General Public License as
- * specified in the README file that comes with the CVS 1.3 kit.
- *
- * Patch
- *
- * Create a Larry Wall format "patch" file between a previous release and the
- * current head of a module, or between two releases. Can specify the
- * release as either a date or a revision number.
- */
-
- #include "cvs.h"
-
- #ifndef lint
- static char rcsid[] = "@(#)patch.c 1.50 92/04/10";
-
- #endif
-
- #if __STDC__
- static SIGTYPE patch_cleanup (void);
- static Dtype patch_dirproc (char *dir, char *repos, char *update_dir);
- static int patch_fileproc (char *file, char *update_dir, char *repository,
- List * entries, List * srcfiles);
- static int patch_proc (int *pargc, char *argv[], char *xwhere,
- char *mwhere, char *mfile, int shorten,
- int local_specified, char *mname, char *msg);
- #else
- static int patch_proc ();
- static int patch_fileproc ();
- static Dtype patch_dirproc ();
- static SIGTYPE patch_cleanup ();
- #endif /* __STDC__ */
-
- static int force_tag_match = 1;
- static int patch_short = 0;
- static int toptwo_diffs = 0;
- static int local = 0;
- static char *options = NULL;
- static char *rev1 = NULL;
- static char *rev2 = NULL;
- static char *date1 = NULL;
- static char *date2 = NULL;
- static char tmpfile1[L_tmpnam+1], tmpfile2[L_tmpnam+1], tmpfile3[L_tmpnam+1];
- static int unidiff = 0;
-
- static char *patch_usage[] =
- {
- "Usage: %s %s [-Qflq] [-c|-u] [-s|-t] [-V %%d]\n",
- " -r rev|-D date [-r rev2 | -D date2] modules...\n",
- "\t-Q\tReally quiet.\n",
- "\t-f\tForce a head revision match if tag/date not found.\n",
- "\t-l\tLocal directory only, not recursive\n",
- "\t-c\tContext diffs (default)\n",
- "\t-u\tUnidiff format.\n",
- "\t-s\tShort patch - one liner per file.\n",
- "\t-t\tTop two diffs - last change made to the file.\n",
- "\t-D date\tDate.\n",
- "\t-r rev\tRevision - symbolic or numeric.\n",
- "\t-V vers\tUse RCS Version \"vers\" for keyword expansion.\n",
- NULL
- };
-
- int
- patch (argc, argv)
- int argc;
- char *argv[];
- {
- register int i;
- int c;
- int err = 0;
- DBM *db;
-
- if (argc == -1)
- usage (patch_usage);
-
- optind = 1;
- while ((c = gnu_getopt (argc, argv, "V:k:cuftsQqlRD:r:")) != -1)
- {
- switch (c)
- {
- case 'Q':
- really_quiet = 1;
- /* FALL THROUGH */
- case 'q':
- quiet = 1;
- break;
- case 'f':
- force_tag_match = 0;
- break;
- case 'l':
- local = 1;
- break;
- case 'R':
- local = 0;
- break;
- case 't':
- toptwo_diffs = 1;
- break;
- case 's':
- patch_short = 1;
- break;
- case 'D':
- if (rev2 != NULL || date2 != NULL)
- error (1, 0,
- "no more than two revisions/dates can be specified");
- if (rev1 != NULL || date1 != NULL)
- date2 = Make_Date (optarg);
- else
- date1 = Make_Date (optarg);
- break;
- case 'r':
- if (rev2 != NULL || date2 != NULL)
- error (1, 0,
- "no more than two revisions/dates can be specified");
- if (rev1 != NULL || date1 != NULL)
- rev2 = optarg;
- else
- rev1 = optarg;
- break;
- case 'k':
- if (options)
- free (options);
- options = RCS_check_kflag (optarg);
- break;
- case 'V':
- if (atoi (optarg) <= 0)
- error (1, 0, "must specify a version number to -V");
- if (options)
- free (options);
- options = xmalloc (strlen (optarg) + 1 + 2); /* for the -V */
- (void) sprintf (options, "-V%s", optarg);
- break;
- case 'u':
- unidiff = 1; /* Unidiff */
- break;
- case 'c': /* Context diff */
- unidiff = 0;
- break;
- case '?':
- default:
- usage (patch_usage);
- break;
- }
- }
- argc -= optind;
- argv += optind;
-
- /* Sanity checks */
- if (argc < 1)
- usage (patch_usage);
-
- if (toptwo_diffs && patch_short)
- error (1, 0, "-t and -s options are mutually exclusive");
- if (toptwo_diffs && (date1 != NULL || date2 != NULL ||
- rev1 != NULL || rev2 != NULL))
- error (1, 0, "must not specify revisions/dates with -t option!");
-
- if (!toptwo_diffs && (date1 == NULL && date2 == NULL &&
- rev1 == NULL && rev2 == NULL))
- error (1, 0, "must specify at least one revision/date!");
- if (date1 != NULL && date2 != NULL)
- if (RCS_datecmp (date1, date2) >= 0)
- error (1, 0, "second date must come after first date!");
-
- /* if options is NULL, make it a NULL string */
- if (options == NULL)
- options = xstrdup ("");
-
- /* clean up if we get a signal */
- (void) SIG_register (SIGHUP, patch_cleanup);
- (void) SIG_register (SIGINT, patch_cleanup);
- (void) SIG_register (SIGQUIT, patch_cleanup);
- (void) SIG_register (SIGPIPE, patch_cleanup);
- (void) SIG_register (SIGTERM, patch_cleanup);
-
- db = open_module ();
- for (i = 0; i < argc; i++)
- err += do_module (db, argv[i], PATCH, "Patching", patch_proc,
- (char *) NULL, 0, 0, 0, (char *) NULL);
- close_module (db);
- free (options);
- patch_cleanup ();
- return (err);
- }
-
- /*
- * callback proc for doing the real work of patching
- */
- /* ARGSUSED */
- static char where[PATH_MAX];
- static int
- patch_proc (pargc, argv, xwhere, mwhere, mfile, shorten, local_specified,
- mname, msg)
- int *pargc;
- char *argv[];
- char *xwhere;
- char *mwhere;
- char *mfile;
- int shorten;
- int local_specified;
- char *mname;
- char *msg;
- {
- int err = 0;
- int which;
- char repository[PATH_MAX];
-
- (void) sprintf (repository, "%s/%s", CVSroot, argv[0]);
- (void) strcpy (where, argv[0]);
-
- /* if mfile isn't null, we need to set up to do only part of the module */
- if (mfile != NULL)
- {
- char *cp;
- char path[PATH_MAX];
-
- /* if the portion of the module is a path, put the dir part on repos */
- if ((cp = rindex (mfile, '/')) != NULL)
- {
- *cp = '\0';
- (void) strcat (repository, "/");
- (void) strcat (repository, mfile);
- (void) strcat (where, "/");
- (void) strcat (where, mfile);
- mfile = cp + 1;
- }
-
- /* take care of the rest */
- (void) sprintf (path, "%s/%s", repository, mfile);
- if (isdir (path))
- {
- /* directory means repository gets the dir tacked on */
- (void) strcpy (repository, path);
- (void) strcat (where, "/");
- (void) strcat (where, mfile);
- }
- else
- {
- int i;
-
- /* a file means muck argv */
- for (i = 1; i < *pargc; i++)
- free (argv[i]);
- argv[1] = xstrdup (mfile);
- (*pargc) = 2;
- }
- }
-
- /* cd to the starting repository */
- if (chdir (repository) < 0)
- {
- error (0, errno, "cannot chdir to %s", repository);
- return (1);
- }
-
- if (force_tag_match)
- which = W_REPOS | W_ATTIC;
- else
- which = W_REPOS;
-
- /* start the recursion processor */
- err = start_recursion (patch_fileproc, (int (*) ()) NULL, patch_dirproc,
- (int (*) ()) NULL, *pargc - 1, argv + 1, local,
- which, 0, 1, where, 1);
-
- return (err);
- }
-
- /*
- * Called to examine a particular RCS file, as appropriate with the options
- * that were set above.
- */
- /* ARGSUSED */
- static int
- patch_fileproc (file, update_dir, repository, entries, srcfiles)
- char *file;
- char *update_dir;
- char *repository;
- List *entries;
- List *srcfiles;
- {
- char *vers_tag, *vers_head;
- char rcsspace[PATH_MAX];
- char *rcs = rcsspace;
- Node *p;
- RCSNode *rcsfile;
- FILE *fp1, *fp2, *fp3;
- int ret = 0;
- int isattic = 0;
- int retcode = 0;
- char file1[PATH_MAX], file2[PATH_MAX], strippath[PATH_MAX];
- char line1[MAXLINELEN], line2[MAXLINELEN];
- char *cp1, *cp2, *commap;
- FILE *fp;
-
-
- /* find the parsed rcs file */
- p = findnode (srcfiles, file);
- if (p == NULL)
- return (1);
- rcsfile = (RCSNode *) p->data;
- if ((rcsfile->flags & VALID) && (rcsfile->flags & INATTIC))
- isattic = 1;
-
- (void) sprintf (rcs, "%s%s", file, RCSEXT);
-
- /* if vers_head is NULL, may have been removed from the release */
- if (isattic && rev2 == NULL && date2 == NULL)
- vers_head = NULL;
- else
- vers_head = RCS_getversion (rcsfile, rev2, date2, force_tag_match);
-
- if (toptwo_diffs)
- {
- if (vers_head == NULL)
- return (1);
-
- if (!date1)
- date1 = xmalloc (50); /* plenty big :-) */
- *date1 = '\0';
- if (RCS_getrevtime (rcsfile, vers_head, date1, 1) == -1)
- {
- if (!really_quiet)
- error (0, 0, "cannot find date in rcs file %s revision %s",
- rcs, vers_head);
- return (1);
- }
- }
- vers_tag = RCS_getversion (rcsfile, rev1, date1, force_tag_match);
-
- if (vers_tag == NULL && (vers_head == NULL || isattic))
- return (0); /* nothing known about specified revs */
-
- if (vers_tag && vers_head && strcmp (vers_head, vers_tag) == 0)
- return (0); /* not changed between releases */
-
- if (patch_short)
- {
- (void) printf ("File ");
- if (vers_tag == NULL)
- (void) printf ("%s is new; current revision %s\n", rcs, vers_head);
- else if (vers_head == NULL)
- (void) printf ("%s is removed; not included in release %s\n",
- rcs, rev2 ? rev2 : date2);
- else
- (void) printf ("%s changed from revision %s to %s\n",
- rcs, vers_tag, vers_head);
- return (0);
- }
- if ((fp1 = fopen (tmpnam (tmpfile1), "w+")) != NULL)
- (void) fclose (fp1);
- if ((fp2 = fopen (tmpnam (tmpfile2), "w+")) != NULL)
- (void) fclose (fp2);
- if ((fp3 = fopen (tmpnam (tmpfile3), "w+")) != NULL)
- (void) fclose (fp3);
- if (fp1 == NULL || fp2 == NULL || fp3 == NULL)
- {
- error (0, 0, "cannot create temporary files");
- ret = 1;
- goto out;
- }
- if (vers_tag != NULL)
- {
- run_setup ("%s%s %s -p -q -r%s", Rcsbin, RCS_CO, options, vers_tag);
- run_arg (rcsfile->path);
- if ((retcode = run_exec (RUN_TTY, tmpfile1, RUN_TTY, RUN_NORMAL)) != 0)
- {
- if (!really_quiet)
- error (retcode == -1 ? 1 : 0, retcode == -1 ? errno : 0,
- "co of revision %s in %s failed", vers_tag, rcs);
- ret = 1;
- goto out;
- }
- }
- else if (toptwo_diffs)
- {
- ret = 1;
- goto out;
- }
- if (vers_head != NULL)
- {
- run_setup ("%s%s %s -p -q -r%s", Rcsbin, RCS_CO, options, vers_head);
- run_arg (rcsfile->path);
- if ((retcode = run_exec (RUN_TTY, tmpfile2, RUN_TTY, RUN_NORMAL)) != 0)
- {
- if (!really_quiet)
- error (retcode == -1 ? 1 : 0, retcode == -1 ? errno : 0,
- "co of revision %s in %s failed", vers_head, rcs);
- ret = 1;
- goto out;
- }
- }
- run_setup ("%s -%c", DIFF, unidiff ? 'u' : 'c');
- run_arg (tmpfile1);
- run_arg (tmpfile2);
- switch (run_exec (RUN_TTY, tmpfile3, RUN_TTY, RUN_NORMAL))
- {
- case -1: /* fork/wait failure */
- error (1, errno, "fork for diff failed on %s", rcs);
- break;
- case 0: /* nothing to do */
- break;
- case 1:
- /*
- * The two revisions are really different, so read the first two
- * lines of the diff output file, and munge them to include more
- * reasonable file names that "patch" will understand.
- */
- fp = open_file (tmpfile3, "r");
- if (fgets (line1, sizeof (line1), fp) == NULL ||
- fgets (line2, sizeof (line2), fp) == NULL)
- {
- error (0, errno, "failed to read diff file header %s for %s",
- tmpfile3, rcs);
- ret = 1;
- (void) fclose (fp);
- goto out;
- }
- if (!unidiff)
- {
- if (strncmp (line1, "*** ", 4) != 0 ||
- strncmp (line2, "--- ", 4) != 0 ||
- (cp1 = index (line1, '\t')) == NULL ||
- (cp2 = index (line2, '\t')) == NULL)
- {
- 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 = index (line1, '\t')) == NULL ||
- (cp2 = index (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 = rindex (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);
- while (fgets (line1, sizeof (line1), fp) != NULL)
- (void) printf ("%s", line1);
- (void) fclose (fp);
- break;
- default:
- error (0, 0, "diff failed for %s", rcs);
- }
- out:
- (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 SIGTYPE
- 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);
- }
-