ui-patch.c

   1 /* ui-patch.c: generate patch view
   2  *
   3  * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include "cgit.h"
  10 #include "ui-patch.h"
  11 #include "html.h"
  12 #include "ui-shared.h"
  13
  14 void cgit_print_patch(const char *new_rev, const char *old_rev,
  15                       const char *prefix)
  16 {
  17         struct rev_info rev;
  18         struct commit *commit;
  19         struct object_id new_rev_oid, old_rev_oid;
  20         char rev_range[2 * 40 + 3];
  21         const char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range, "--", prefix, NULL };
  22         int rev_argc = ARRAY_SIZE(rev_argv) - 1;
  23         char *patchname;
  24
  25         if (!prefix)
  26                 rev_argc--;
  27
  28         if (!new_rev)
  29                 new_rev = ctx.qry.head;
  30
  31         if (get_oid(new_rev, &new_rev_oid)) {
  32                 cgit_print_error_page(404, "Not found",
  33                                 "Bad object id: %s", new_rev);
  34                 return;
  35         }
  36         commit = lookup_commit_reference(&new_rev_oid);
  37         if (!commit) {
  38                 cgit_print_error_page(404, "Not found",
  39                                 "Bad commit reference: %s", new_rev);
  40                 return;
  41         }
  42
  43         if (old_rev) {
  44                 if (get_oid(old_rev, &old_rev_oid)) {
  45                         cgit_print_error_page(404, "Not found",
  46                                         "Bad object id: %s", old_rev);
  47                         return;
  48                 }
  49                 if (!lookup_commit_reference(&old_rev_oid)) {
  50                         cgit_print_error_page(404, "Not found",
  51                                         "Bad commit reference: %s", old_rev);
  52                         return;
  53                 }
  54         } else if (commit->parents && commit->parents->item) {
  55                 oidcpy(&old_rev_oid, &commit->parents->item->object.oid);
  56         } else {
  57                 oidclr(&old_rev_oid);
  58         }
  59
  60         if (is_null_oid(&old_rev_oid)) {
  61                 memcpy(rev_range, oid_to_hex(&new_rev_oid), GIT_SHA1_HEXSZ + 1);
  62         } else {
  63                 sprintf(rev_range, "%s..%s", oid_to_hex(&old_rev_oid),
  64                         oid_to_hex(&new_rev_oid));
  65         }
  66
  67         patchname = fmt("%s.patch", rev_range);
  68         ctx.page.mimetype = "text/plain";
  69         ctx.page.filename = patchname;
  70         cgit_print_http_headers();
  71
  72         if (ctx.cfg.noplainemail) {
  73                 rev_argv[2] = "--format=format:From %H Mon Sep 17 00:00:00 "
  74                               "2001%nFrom: %an%nDate: %aD%n%w(78,0,1)Subject: "
  75                               "%s%n%n%w(0)%b";
  76         }
  77
  78         init_revisions(&rev, NULL);
  79         rev.abbrev = DEFAULT_ABBREV;
  80         rev.verbose_header = 1;
  81         rev.diff = 1;
  82         rev.show_root_diff = 1;
  83         rev.max_parents = 1;
  84         rev.diffopt.output_format |= DIFF_FORMAT_DIFFSTAT |
  85                         DIFF_FORMAT_PATCH | DIFF_FORMAT_SUMMARY;
  86         if (prefix)
  87                 rev.diffopt.stat_sep = fmt("(limited to '%s')\n\n", prefix);
  88         setup_revisions(rev_argc, rev_argv, &rev, NULL);
  89         prepare_revision_walk(&rev);
  90
  91         while ((commit = get_revision(&rev)) != NULL) {
  92                 log_tree_commit(&rev, commit);
  93                 printf("-- \ncgit %s\n\n", cgit_version);
  94         }
  95
  96         fflush(stdout);
  97 }