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_http_headers();
  29                 cgit_print_error("Bad object id: %s", new_rev);
  30                 return;
  31         }
  32         commit = lookup_commit_reference(new_rev_sha1);
  33         if (!commit) {
  34                 cgit_print_http_headers();
  35                 cgit_print_error("Bad commit reference: %s", new_rev);
  36                 return;
  37         }
  38
  39         if (old_rev) {
  40                 if (get_sha1(old_rev, old_rev_sha1)) {
  41                         cgit_print_http_headers();
  42                         cgit_print_error("Bad object id: %s", old_rev);
  43                         return;
  44                 }
  45                 if (!lookup_commit_reference(old_rev_sha1)) {
  46                         cgit_print_http_headers();
  47                         cgit_print_error("Bad commit reference: %s", old_rev);
  48                         return;
  49                 }
  50         } else if (commit->parents && commit->parents->item) {
  51                 hashcpy(old_rev_sha1, commit->parents->item->object.sha1);
  52         } else {
  53                 hashclr(old_rev_sha1);
  54         }
  55
  56         if (is_null_sha1(old_rev_sha1)) {
  57                 memcpy(rev_range, sha1_to_hex(new_rev_sha1), 41);
  58         } else {
  59                 sprintf(rev_range, "%s..%s", sha1_to_hex(old_rev_sha1),
  60                         sha1_to_hex(new_rev_sha1));
  61         }
  62
  63         patchname = fmt("%s.patch", rev_range);
  64         ctx.page.mimetype = "text/plain";
  65         ctx.page.filename = patchname;
  66         cgit_print_http_headers();
  67
  68         if (ctx.cfg.noplainemail) {
  69                 rev_argv[2] = "--format=format:From %H Mon Sep 17 00:00:00 "
  70                               "2001%nFrom: %an%nDate: %aD%n%w(78,0,1)Subject: "
  71                               "%s%n%n%w(0)%b";
  72         }
  73
  74         init_revisions(&rev, NULL);
  75         rev.abbrev = DEFAULT_ABBREV;
  76         rev.verbose_header = 1;
  77         rev.diff = 1;
  78         rev.show_root_diff = 1;
  79         rev.max_parents = 1;
  80         rev.diffopt.output_format |= DIFF_FORMAT_DIFFSTAT |
  81                         DIFF_FORMAT_PATCH | DIFF_FORMAT_SUMMARY;
  82         setup_revisions(ARRAY_SIZE(rev_argv), (const char **)rev_argv, &rev,
  83                         NULL);
  84         prepare_revision_walk(&rev);
  85
  86         while ((commit = get_revision(&rev)) != NULL) {
  87                 log_tree_commit(&rev, commit);
  88                 printf("-- \ncgit %s\n\n", cgit_version);
  89         }
  90
  91         fflush(stdout);
  92 }