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-rw-r--r--ui-patch.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/ui-patch.c b/ui-patch.c
new file mode 100644
index 0000000..ef79c7c
--- /dev/null
+++ b/ui-patch.c
@@ -0,0 +1,105 @@
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
11static void print_line(char *line, int len)
12{
13 char c = line[len-1];
14
15 line[len-1] = '\0';
16 htmlf("%s\n", line);
17 line[len-1] = c;
18}
19
20static void header(unsigned char *sha1, char *path1, int mode1,
21 unsigned char *sha2, char *path2, int mode2)
22{
23 char *abbrev1, *abbrev2;
24 int subproject;
25
26 subproject = (S_ISGITLINK(mode1) || S_ISGITLINK(mode2));
27 htmlf("diff --git a/%s b/%s\n", path1, path2);
28
29 if (is_null_sha1(sha1))
30 path1 = "dev/null";
31 if (is_null_sha1(sha2))
32 path2 = "dev/null";
33
34 if (mode1 == 0)
35 htmlf("new file mode %.6o\n", mode2);
36
37 if (mode2 == 0)
38 htmlf("deleted file mode %.6o\n", mode1);
39
40 if (!subproject) {
41 abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
42 abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
43 htmlf("index %s..%s", abbrev1, abbrev2);
44 free(abbrev1);
45 free(abbrev2);
46 if (mode1 != 0 && mode2 != 0) {
47 htmlf(" %.6o", mode1);
48 if (mode2 != mode1)
49 htmlf("..%.6o", mode2);
50 }
51 htmlf("\n--- a/%s\n", path1);
52 htmlf("+++ b/%s\n", path2);
53 }
54}
55
56static void filepair_cb(struct diff_filepair *pair)
57{
58 header(pair->one->sha1, pair->one->path, pair->one->mode,
59 pair->two->sha1, pair->two->path, pair->two->mode);
60 if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
61 if (S_ISGITLINK(pair->one->mode))
62 print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
63 if (S_ISGITLINK(pair->two->mode))
64 print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
65 return;
66 }
67 if (cgit_diff_files(pair->one->sha1, pair->two->sha1, print_line))
68 html("Error running diff");
69}
70
71void cgit_print_patch(char *hex, struct cacheitem *item)
72{
73 struct commit *commit;
74 struct commitinfo *info;
75 unsigned char sha1[20], old_sha1[20];
76 char *patchname;
77
78 if (!hex)
79 hex = cgit_query_head;
80
81 if (get_sha1(hex, sha1)) {
82 cgit_print_error(fmt("Bad object id: %s", hex));
83 return;
84 }
85 commit = lookup_commit_reference(sha1);
86 if (!commit) {
87 cgit_print_error(fmt("Bad commit reference: %s", hex));
88 return;
89 }
90 info = cgit_parse_commit(commit);
91 hashcpy(old_sha1, commit->parents->item->object.sha1);
92
93 patchname = fmt("%s.patch", sha1_to_hex(sha1));
94 cgit_print_snapshot_start("text/plain", patchname, item);
95 htmlf("From %s Mon Sep 17 00:00:00 2001\n", sha1_to_hex(sha1));
96 htmlf("From: %s%s\n", info->author, info->author_email);
97 html("Date: ");
98 cgit_print_date(info->author_date, "%a, %d %b %Y %H:%M:%S %z%n");
99 htmlf("Subject: %s\n\n%s", info->subject, info->msg);
100 html("---\n");
101 cgit_diff_tree(old_sha1, sha1, filepair_cb, NULL);
102 html("--\n");
103 htmlf("cgit %s\n", CGIT_VERSION);
104 cgit_free_commitinfo(info);
105}