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#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%s", info->subject, info->msg);
html("---\n");
cgit_diff_tree(old_sha1, sha1, filepair_cb, NULL);
html("--\n");
htmlf("cgit %s\n", CGIT_VERSION);
cgit_free_commitinfo(info);
}
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