/* config.c: parsing of config files
*
* Copyright (C) 2006 Lars Hjemli
*
* Licensed under GNU General Public License v2
* (see COPYING for full license text)
*/
#include "cgit.h"
int next_char(FILE *f)
{
int c = fgetc(f);
if (c=='\r') {
c = fgetc(f);
if (c!='\n') {
ungetc(c, f);
c = '\r';
}
}
return c;
}
void skip_line(FILE *f)
{
int c;
while((c=next_char(f)) && c!='\n' && c!=EOF)
;
}
int read_config_line(FILE *f, char *line, const char **value, int bufsize)
{
int i = 0, isname = 0;
*value = NULL;
while(i<bufsize-1) {
int c = next_char(f);
if (!isname && (c=='#' || c==';')) {
skip_line(f);
continue;
}
if (!isname && isspace(c))
continue;
if (c=='=' && !*value) {
line[i] = 0;
*value = &line[i+1];
} else if (c=='\n' && !isname) {
i = 0;
continue;
} else if (c=='\n' || c==EOF) {
line[i] = 0;
break;
} else {
line[i]=c;
}
isname = 1;
i++;
}
line[i+1] = 0;
return i;
}
int cgit_read_config(const char *filename, configfn fn)
{
static int nesting;
int len;
char line[256];
const char *value;
FILE *f;
/* cancel deeply nested include-commands */
if (nesting > 8)
return -1;
if (!(f = fopen(filename, "r")))
return -1;
nesting++;
while((len = read_config_line(f, line, &value, sizeof(line))) > 0)
(*fn)(line, value);
nesting--;
fclose(f);
return 0;
}
char *convert_query_hexchar(char *txt)
{
int d1, d2;
if (strlen(txt) < 3) {
*txt = '\0';
return txt-1;
}
d1 = hextoint(*(txt+1));
d2 = hextoint(*(txt+2));
if (d1<0 || d2<0) {
strcpy(txt, txt+3);
return txt-1;
} else {
*txt = d1 * 16 + d2;
strcpy(txt+1, txt+3);
return txt;
}
}
int cgit_parse_query(char *txt, configfn fn)
{
char *t, *value = NULL, c;
if (!txt)
return 0;
t = txt = xstrdup(txt);
while((c=*t) != '\0') {
if (c=='=') {
*t = '\0';
value = t+1;
} else if (c=='+') {
*t = ' ';
} else if (c=='%') {
t = convert_query_hexchar(t);
} else if (c=='&') {
*t = '\0';
(*fn)(txt, value);
txt = t+1;
value = NULL;
}
t++;
}
if (t!=txt)
(*fn)(txt, value);
return 0;
}
/*
* 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 *cmd, *p;
cgit_repo = NULL;
if (!url || url[0] == '\0')
return;
cgit_repo = cgit_get_repoinfo(url);
if (cgit_repo) {
cgit_query_repo = cgit_repo->url;
return;
}
cmd = strchr(url, '/');
while (!cgit_repo && cmd) {
cmd[0] = '\0';
cgit_repo = cgit_get_repoinfo(url);
if (cgit_repo == NULL) {
cmd[0] = '/';
cmd = strchr(cmd + 1, '/');
continue;
}
cgit_query_repo = cgit_repo->url;
p = strchr(cmd + 1, '/');
if (p) {
p[0] = '\0';
if (p[1])
cgit_query_path = trim_end(p + 1, '/');
}
cgit_cmd = cgit_get_cmd_index(cmd + 1);
cgit_query_page = xstrdup(cmd + 1);
return;
}
}
char *substr(const char *head, const char *tail)
{
char *buf;
buf = xmalloc(tail - head + 1);
strncpy(buf, head, tail - head);
buf[tail - head] = '\0';
return buf;
}
struct commitinfo *cgit_parse_commit(struct commit *commit)
{
struct commitinfo *ret;
char *p = commit->buffer, *t = commit->buffer;
ret = xmalloc(sizeof(*ret));
ret->commit = commit;
ret->author = NULL;
ret->author_email = NULL;
ret->committer = NULL;
ret->committer_email = NULL;
ret->subject = NULL;
ret->msg = NULL;
ret->msg_encoding = NULL;
if (p == NULL)
return ret;
if (strncmp(p, "tree ", 5))
die("Bad commit: %s", sha1_to_hex(commit->object.sha1));
else
p += 46; // "tree " + hex[40] + "\n"
while (!strncmp(p, "parent ", 7))
p += 48; // "parent " + hex[40] + "\n"
if (!strncmp(p, "author ", 7)) {
p += 7;
t = strchr(p, '<') - 1;
ret->author = substr(p, t);
p = t;
t = strchr(t, '>') + 1;
ret->author_email = substr(p, t);
ret->author_date = atol(t+1);
p = strchr(t, '\n') + 1;
}
if (!strncmp(p, "committer ", 9)) {
p += 9;
t = strchr(p, '<') - 1;
ret->committer = substr(p, t);
p = t;
t = strchr(t, '>') + 1;
ret->committer_email = substr(p, t);
ret->committer_date = atol(t+1);
p = strchr(t, '\n') + 1;
}
if (!strncmp(p, "encoding ", 9)) {
p += 9;
t = strchr(p, '\n') + 1;
ret->msg_encoding = substr(p, t);
p = t;
} else
ret->msg_encoding = xstrdup(PAGE_ENCODING);
while (*p && (*p != '\n'))
p = strchr(p, '\n') + 1; // skip unknown header fields
while (*p == '\n')
p = strchr(p, '\n') + 1;
t = strchr(p, '\n');
if (t) {
if (*t == '\0')
ret->subject = "** empty **";
else
ret->subject = substr(p, t);
p = t + 1;
while (*p == '\n')
p = strchr(p, '\n') + 1;
ret->msg = xstrdup(p);
} else
ret->subject = substr(p, p+strlen(p));
if(strcmp(ret->msg_encoding, PAGE_ENCODING)) {
t = reencode_string(ret->subject, PAGE_ENCODING,
ret->msg_encoding);
if(t) {
free(ret->subject);
ret->subject = t;
}
t = reencode_string(ret->msg, PAGE_ENCODING,
ret->msg_encoding);
if(t) {
free(ret->msg);
ret->msg = t;
}
}
return ret;
}
struct taginfo *cgit_parse_tag(struct tag *tag)
{
void *data;
enum object_type type;
unsigned long size;
char *p, *t;
struct taginfo *ret;
data = read_sha1_file(tag->object.sha1, &type, &size);
if (!data || type != OBJ_TAG) {
free(data);
return 0;
}
ret = xmalloc(sizeof(*ret));
ret->tagger = NULL;
ret->tagger_email = NULL;
ret->tagger_date = 0;
ret->msg = NULL;
p = data;
while (p && *p) {
if (*p == '\n')
break;
if (!strncmp(p, "tagger ", 7)) {
p += 7;
t = strchr(p, '<') - 1;
ret->tagger = substr(p, t);
p = t;
t = strchr(t, '>') + 1;
ret->tagger_email = substr(p, t);
ret->tagger_date = atol(t+1);
}
p = strchr(p, '\n') + 1;
}
while (p && *p && (*p != '\n'))
p = strchr(p, '\n') + 1; // skip unknown tag fields
while (p && (*p == '\n'))
p = strchr(p, '\n') + 1;
if (p && *p)
ret->msg = xstrdup(p);
free(data);
return ret;
}
