ui-patch.c

   1 /* ui-patch.c: generate patch view
   2  *
   3  * Copyright (C) 2007 Lars Hjemli
   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(char *hex, const char *old_rev, const char *prefix)
  15 {
  16         struct rev_info rev;
  17         struct commit *commit;
  18         unsigned char sha1[20], old_sha1[20];
  19         char rev_range[2 * 40 + 3];
  20         char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range };
  21         char *patchname;
  22
  23         if (!hex)
  24                 hex = ctx.qry.head;
  25
  26         if (get_sha1(hex, sha1)) {
  27                 cgit_print_error("Bad object id: %s", hex);
  28                 return;
  29         }
  30         commit = lookup_commit_reference(sha1);
  31         if (!commit) {
  32                 cgit_print_error("Bad commit reference: %s", hex);
  33                 return;
  34         }
  35
  36         if (old_rev) {
  37                 if (get_sha1(old_rev, old_sha1)) {
  38                         cgit_print_error("Bad object id: %s", old_rev);
  39                         return;
  40                 }
  41                 if (!lookup_commit_reference(old_sha1)) {
  42                         cgit_print_error("Bad commit reference: %s", old_rev);
  43                         return;
  44                 }
  45         } else if (commit->parents && commit->parents->item) {
  46                 hashcpy(old_sha1, commit->parents->item->object.sha1);
  47         } else {
  48                 hashclr(old_sha1);
  49         }
  50
  51         if (is_null_sha1(old_sha1)) {
  52                 memcpy(rev_range, sha1_to_hex(sha1), 41);
  53         } else {
  54                 sprintf(rev_range, "%s..%s", sha1_to_hex(old_sha1),
  55                         sha1_to_hex(sha1));
  56         }
  57
  58         patchname = fmt("%s.patch", rev_range);
  59         ctx.page.mimetype = "text/plain";
  60         ctx.page.filename = patchname;
  61         cgit_print_http_headers(&ctx);
  62
  63         if (ctx.cfg.noplainemail) {
  64                 rev_argv[2] = "--format=format:From %H Mon Sep 17 00:00:00 "
  65                               "2001%nFrom: %an%nDate: %aD%n%w(78,0,1)Subject: "
  66                               "%s%n%n%w(0)%b";
  67         }
  68
  69         init_revisions(&rev, NULL);
  70         rev.abbrev = DEFAULT_ABBREV;
  71         rev.verbose_header = 1;
  72         rev.diff = 1;
  73         rev.show_root_diff = 1;
  74         rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
  75         setup_revisions(ARRAY_SIZE(rev_argv), (const char **)rev_argv, &rev,
  76                         NULL);
  77         prepare_revision_walk(&rev);
  78
  79         while ((commit = get_revision(&rev)) != NULL) {
  80                 log_tree_commit(&rev, commit);
  81                 printf("--\ncgit %s\n", cgit_version);
  82         }
  83 }