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         unsigned char new_rev_sha1[20], old_rev_sha1[20];
  20         char rev_range[2 * 40 + 3];
  21         char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range };
  22         char *patchname;
  23
  24         if (!new_rev)
  25                 new_rev = ctx.qry.head;
  26
  27         if (get_sha1(new_rev, new_rev_sha1)) {
  28                 cgit_print_error("Bad object id: %s", new_rev);
  29                 return;
  30         }
  31         commit = lookup_commit_reference(new_rev_sha1);
  32         if (!commit) {
  33                 cgit_print_error("Bad commit reference: %s", new_rev);
  34                 return;
  35         }
  36
  37         if (old_rev) {
  38                 if (get_sha1(old_rev, old_rev_sha1)) {
  39                         cgit_print_error("Bad object id: %s", old_rev);
  40                         return;
  41                 }
  42                 if (!lookup_commit_reference(old_rev_sha1)) {
  43                         cgit_print_error("Bad commit reference: %s", old_rev);
  44                         return;
  45                 }
  46         } else if (commit->parents && commit->parents->item) {
  47                 hashcpy(old_rev_sha1, commit->parents->item->object.sha1);
  48         } else {
  49                 hashclr(old_rev_sha1);
  50         }
  51
  52         if (is_null_sha1(old_rev_sha1)) {
  53                 memcpy(rev_range, sha1_to_hex(new_rev_sha1), 41);
  54         } else {
  55                 sprintf(rev_range, "%s..%s", sha1_to_hex(old_rev_sha1),
  56                         sha1_to_hex(new_rev_sha1));
  57         }
  58
  59         patchname = fmt("%s.patch", rev_range);
  60         ctx.page.mimetype = "text/plain";
  61         ctx.page.filename = patchname;
  62         cgit_print_http_headers();
  63
  64         if (ctx.cfg.noplainemail) {
  65                 rev_argv[2] = "--format=format:From %H Mon Sep 17 00:00:00 "
  66                               "2001%nFrom: %an%nDate: %aD%n%w(78,0,1)Subject: "
  67                               "%s%n%n%w(0)%b";
  68         }
  69
  70         init_revisions(&rev, NULL);
  71         rev.abbrev = DEFAULT_ABBREV;
  72         rev.verbose_header = 1;
  73         rev.diff = 1;
  74         rev.show_root_diff = 1;
  75         rev.max_parents = 1;
  76         rev.diffopt.output_format |= DIFF_FORMAT_DIFFSTAT |
  77                         DIFF_FORMAT_PATCH | DIFF_FORMAT_SUMMARY;
  78         setup_revisions(ARRAY_SIZE(rev_argv), (const char **)rev_argv, &rev,
  79                         NULL);
  80         prepare_revision_walk(&rev);
  81
  82         while ((commit = get_revision(&rev)) != NULL) {
  83                 log_tree_commit(&rev, commit);
  84                 printf("-- \ncgit %s\n\n", cgit_version);
  85         }
  86
  87         fflush(stdout);
  88 }