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/* 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"
#include "html.h"
#include "ui-shared.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 (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);
}
if (is_null_sha1(sha1)) {
path1 = "dev/null";
htmlf("\n--- /%s\n", path1);
} else
htmlf("\n--- a/%s\n", path1);
if (is_null_sha1(sha2)) {
path2 = "dev/null";
htmlf("+++ /%s\n", path2);
} else
htmlf("+++ b/%s\n", path2);
}
}
static void filepair_cb(struct diff_filepair *pair)
{
unsigned long old_size = 0;
unsigned long new_size = 0;
int binary = 0;
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, &old_size,
&new_size, &binary, 0, 0, print_line))
html("Error running diff");
if (binary)
html("Binary files differ\n");
}
void cgit_print_patch(char *hex, const char *prefix)
{
struct commit *commit;
struct commitinfo *info;
unsigned char sha1[20], old_sha1[20];
char *patchname;
if (!hex)
hex = ctx.qry.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);
if (commit->parents && commit->parents->item)
hashcpy(old_sha1, commit->parents->item->object.sha1);
else
hashclr(old_sha1);
patchname = fmt("%s.patch", sha1_to_hex(sha1));
ctx.page.mimetype = "text/plain";
ctx.page.filename = patchname;
cgit_print_http_headers(&ctx);
htmlf("From %s Mon Sep 17 00:00:00 2001\n", sha1_to_hex(sha1));
htmlf("From: %s", info->author);
if (!ctx.cfg.noplainemail) {
htmlf(" %s", info->author_email);
}
html("\n");
html("Date: ");
cgit_print_date(info->author_date, "%a, %d %b %Y %H:%M:%S %z%n", ctx.cfg.local_time);
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");
if (prefix)
htmlf("(limited to '%s')\n\n", prefix);
cgit_diff_tree(old_sha1, sha1, filepair_cb, prefix, 0);
html("--\n");
htmlf("cgit %s\n", cgit_version);
cgit_free_commitinfo(info);
}
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