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-rw-r--r--ui-patch.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/ui-patch.c b/ui-patch.c
new file mode 100644
index 0000000..e7a010a
--- /dev/null
+++ b/ui-patch.c
@@ -0,0 +1,110 @@
+/* ui-patch.c: generate patch view
+ *
+ * Copyright (C) 2007 Lars Hjemli
+ *
+ * Licensed under GNU General Public License v2
+ * (see COPYING for full license text)
+ */
+
+#include "cgit.h"
+
+static void print_line(char *line, int len)
+{
+ char c = line[len-1];
+
+ line[len-1] = '\0';
+ htmlf("%s\n", line);
+ line[len-1] = c;
+}
+
+static void header(unsigned char *sha1, char *path1, int mode1,
+ unsigned char *sha2, char *path2, int mode2)
+{
+ char *abbrev1, *abbrev2;
+ int subproject;
+
+ subproject = (S_ISGITLINK(mode1) || S_ISGITLINK(mode2));
+ htmlf("diff --git a/%s b/%s\n", path1, path2);
+
+ if (is_null_sha1(sha1))
+ path1 = "dev/null";
+ if (is_null_sha1(sha2))
+ path2 = "dev/null";
+
+ if (mode1 == 0)
+ htmlf("new file mode %.6o\n", mode2);
+
+ if (mode2 == 0)
+ htmlf("deleted file mode %.6o\n", mode1);
+
+ if (!subproject) {
+ abbrev1 = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
+ abbrev2 = xstrdup(find_unique_abbrev(sha2, DEFAULT_ABBREV));
+ htmlf("index %s..%s", abbrev1, abbrev2);
+ free(abbrev1);
+ free(abbrev2);
+ if (mode1 != 0 && mode2 != 0) {
+ htmlf(" %.6o", mode1);
+ if (mode2 != mode1)
+ htmlf("..%.6o", mode2);
+ }
+ htmlf("\n--- a/%s\n", path1);
+ htmlf("+++ b/%s\n", path2);
+ }
+}
+
+static void filepair_cb(struct diff_filepair *pair)
+{
+ header(pair->one->sha1, pair->one->path, pair->one->mode,
+ pair->two->sha1, pair->two->path, pair->two->mode);
+ if (S_ISGITLINK(pair->one->mode) || S_ISGITLINK(pair->two->mode)) {
+ if (S_ISGITLINK(pair->one->mode))
+ print_line(fmt("-Subproject %s", sha1_to_hex(pair->one->sha1)), 52);
+ if (S_ISGITLINK(pair->two->mode))
+ print_line(fmt("+Subproject %s", sha1_to_hex(pair->two->sha1)), 52);
+ return;
+ }
+ if (cgit_diff_files(pair->one->sha1, pair->two->sha1, print_line))
+ html("Error running diff");
+}
+
+void cgit_print_patch(char *hex, struct cacheitem *item)
+{
+ struct commit *commit;
+ struct commitinfo *info;
+ unsigned char sha1[20], old_sha1[20];
+ char *patchname;
+
+ if (!hex)
+ hex = cgit_query_head;
+
+ if (get_sha1(hex, sha1)) {
+ cgit_print_error(fmt("Bad object id: %s", hex));
+ return;
+ }
+ commit = lookup_commit_reference(sha1);
+ if (!commit) {
+ cgit_print_error(fmt("Bad commit reference: %s", hex));
+ return;
+ }
+ info = cgit_parse_commit(commit);
+ hashcpy(old_sha1, commit->parents->item->object.sha1);
+
+ patchname = fmt("%s.patch", sha1_to_hex(sha1));
+ cgit_print_snapshot_start("text/plain", patchname, item);
+ htmlf("From %s Mon Sep 17 00:00:00 2001\n", sha1_to_hex(sha1));
+ htmlf("From: %s%s\n", info->author, info->author_email);
+ html("Date: ");
+ cgit_print_date(info->author_date, "%a, %d %b %Y %H:%M:%S %z%n");
+ htmlf("Subject: %s\n\n", info->subject);
+ if (info->msg && *info->msg) {
+ htmlf("%s", info->msg);
+ if (info->msg[strlen(info->msg) - 1] != '\n')
+ html("\n");
+ }
+ html("---\n");
+ cgit_diff_tree(old_sha1, sha1, filepair_cb, NULL);
+ html("--\n");
+ htmlf("cgit %s\n", CGIT_VERSION);
+ cgit_free_commitinfo(info);
+}