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/* parsing.c: parsing of config files
*
* Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
*
* Licensed under GNU General Public License v2
* (see COPYING for full license text)
*/
#include "cgit.h"
/*
* url syntax: [repo ['/' cmd [ '/' path]]]
* repo: any valid repo url, may contain '/'
* cmd: log | commit | diff | tree | view | blob | snapshot
* path: any valid path, may contain '/'
*
*/
void cgit_parse_url(const char *url)
{
char *c, *cmd, *p;
struct cgit_repo *repo;
ctx.repo = NULL;
if (!url || url[0] == '\0')
return;
ctx.repo = cgit_get_repoinfo(url);
if (ctx.repo) {
ctx.qry.repo = ctx.repo->url;
return;
}
cmd = NULL;
c = strchr(url, '/');
while (c) {
c[0] = '\0';
repo = cgit_get_repoinfo(url);
if (repo) {
ctx.repo = repo;
cmd = c;
}
c[0] = '/';
c = strchr(c + 1, '/');
}
if (ctx.repo) {
ctx.qry.repo = ctx.repo->url;
p = strchr(cmd + 1, '/');
if (p) {
p[0] = '\0';
if (p[1])
ctx.qry.path = trim_end(p + 1, '/');
}
if (cmd[1])
ctx.qry.page = xstrdup(cmd + 1);
return;
}
}
static char *substr(const char *head, const char *tail)
{
char *buf;
if (tail < head)
return xstrdup("");
buf = xmalloc(tail - head + 1);
strncpy(buf, head, tail - head);
buf[tail - head] = '\0';
return buf;
}
static void parse_user(const char *t, char **name, char **email, unsigned long *date)
{
struct ident_split ident;
unsigned email_len;
if (!split_ident_line(&ident, t, strchrnul(t, '\n') - t)) {
*name = substr(ident.name_begin, ident.name_end);
email_len = ident.mail_end - ident.mail_begin;
*email = xmalloc(strlen("<") + email_len + strlen(">") + 1);
sprintf(*email, "<%.*s>", email_len, ident.mail_begin);
if (ident.date_begin)
*date = strtoul(ident.date_begin, NULL, 10);
}
}
#ifdef NO_ICONV
#define reencode(a, b, c)
#else
static const char *reencode(char **txt, const char *src_enc, const char *dst_enc)
{
char *tmp;
if (!txt)
return NULL;
if (!*txt || !src_enc || !dst_enc)
return *txt;
/* no encoding needed if src_enc equals dst_enc */
if (!strcasecmp(src_enc, dst_enc))
return *txt;
tmp = reencode_string(*txt, dst_enc, src_enc);
if (tmp) {
free(*txt);
*txt = tmp;
}
return *txt;
}
#endif
static const char *next_header_line(const char *p)
{
p = strchr(p, '\n');
if (!p)
return NULL;
return p + 1;
}
static int end_of_header(const char *p)
{
return !p || (*p == '\n');
}
struct commitinfo *cgit_parse_commit(struct commit *commit)
{
const int sha1hex_len = 40;
struct commitinfo *ret;
const char *p = get_cached_commit_buffer(commit, NULL);
const char *t;
ret = xcalloc(1, sizeof(struct commitinfo));
ret->commit = commit;
if (!p)
return ret;
if (!skip_prefix(p, "tree ", &p))
die("Bad commit: %s", sha1_to_hex(commit->object.sha1));
p += sha1hex_len + 1;
while (skip_prefix(p, "parent ", &p))
p += sha1hex_len + 1;
if (p && skip_prefix(p, "author ", &p)) {
parse_user(p, &ret->author, &ret->author_email,
&ret->author_date);
p = next_header_line(p);
}
if (p && skip_prefix(p, "committer ", &p)) {
parse_user(p, &ret->committer, &ret->committer_email,
&ret->committer_date);
p = next_header_line(p);
}
if (p && skip_prefix(p, "encoding ", &p)) {
t = strchr(p, '\n');
if (t) {
ret->msg_encoding = substr(p, t + 1);
p = t + 1;
}
}
if (!ret->msg_encoding)
ret->msg_encoding = xstrdup("UTF-8");
while (!end_of_header(p))
p = next_header_line(p);
while (p && *p == '\n')
p++;
if (!p)
return ret;
t = strchrnul(p, '\n');
ret->subject = substr(p, t);
while (*t == '\n')
t++;
ret->msg = xstrdup(t);
reencode(&ret->author, ret->msg_encoding, PAGE_ENCODING);
reencode(&ret->author_email, ret->msg_encoding, PAGE_ENCODING);
reencode(&ret->committer, ret->msg_encoding, PAGE_ENCODING);
reencode(&ret->committer_email, ret->msg_encoding, PAGE_ENCODING);
reencode(&ret->subject, ret->msg_encoding, PAGE_ENCODING);
reencode(&ret->msg, ret->msg_encoding, PAGE_ENCODING);
return ret;
}
struct taginfo *cgit_parse_tag(struct tag *tag)
{
void *data;
enum object_type type;
unsigned long size;
const char *p;
struct taginfo *ret = NULL;
data = read_sha1_file(tag->object.sha1, &type, &size);
if (!data || type != OBJ_TAG)
goto cleanup;
ret = xcalloc(1, sizeof(struct taginfo));
for (p = data; !end_of_header(p); p = next_header_line(p)) {
if (skip_prefix(p, "tagger ", &p)) {
parse_user(p, &ret->tagger, &ret->tagger_email,
&ret->tagger_date);
}
}
while (p && *p == '\n')
p++;
if (p && *p)
ret->msg = xstrdup(p);
cleanup:
free(data);
return ret;
}
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