1/* config.c: parsing of config files
  2 *
  3 * Copyright (C) 2006 Lars Hjemli
  4 *
  5 * Licensed under GNU General Public License v2
  6 *   (see COPYING for full license text)
  7 */
  8
  9#include "cgit.h"
 10
 11int next_char(FILE *f)
 12{
 13	int c = fgetc(f);
 14	if (c=='\r') {
 15		c = fgetc(f);
 16		if (c!='\n') {
 17			ungetc(c, f);
 18			c = '\r';
 19		}
 20	}
 21	return c;
 22}
 23
 24void skip_line(FILE *f)
 25{
 26	int c;
 27
 28	while((c=next_char(f)) && c!='\n' && c!=EOF)
 29		;
 30}
 31
 32int read_config_line(FILE *f, char *line, const char **value, int bufsize)
 33{
 34	int i = 0, isname = 0;
 35
 36	*value = NULL;
 37	while(i<bufsize-1) {
 38		int c = next_char(f);
 39		if (!isname && (c=='#' || c==';')) {
 40			skip_line(f);
 41			continue;
 42		}
 43		if (!isname && isspace(c))
 44			continue;
 45
 46		if (c=='=' && !*value) {
 47			line[i] = 0;
 48			*value = &line[i+1];
 49		} else if (c=='\n' && !isname) {
 50			i = 0;
 51			continue;
 52		} else if (c=='\n' || c==EOF) {
 53			line[i] = 0;
 54			break;
 55		} else {
 56			line[i]=c;
 57		}
 58		isname = 1;
 59		i++;
 60	}
 61	line[i+1] = 0;
 62	return i;
 63}
 64
 65int cgit_read_config(const char *filename, configfn fn)
 66{
 67	int ret = 0, len;
 68	char line[256];
 69	const char *value;
 70	FILE *f = fopen(filename, "r");
 71
 72	if (!f)
 73		return -1;
 74
 75	while((len = read_config_line(f, line, &value, sizeof(line))) > 0)
 76		(*fn)(line, value);
 77
 78	fclose(f);
 79	return ret;
 80}
 81
 82int cgit_parse_query(char *txt, configfn fn)
 83{
 84	char *t, *value = NULL, c;
 85
 86	if (!txt)
 87		return 0;
 88
 89	t = txt = xstrdup(txt);
 90 
 91	while((c=*t) != '\0') {
 92		if (c=='=') {
 93			*t = '\0';
 94			value = t+1;
 95		} else if (c=='&') {
 96			*t = '\0';
 97			(*fn)(txt, value);
 98			txt = t+1;
 99			value = NULL;
100		}
101		t++;
102	}
103	if (t!=txt)
104		(*fn)(txt, value);
105	return 0;
106}
107
108char *substr(const char *head, const char *tail)
109{
110	char *buf;
111
112	buf = xmalloc(tail - head + 1);
113	strncpy(buf, head, tail - head);
114	buf[tail - head] = '\0';
115	return buf;
116}
117
118struct commitinfo *cgit_parse_commit(struct commit *commit)
119{
120	struct commitinfo *ret;
121	char *p = commit->buffer, *t = commit->buffer;
122
123	ret = xmalloc(sizeof(*ret));
124	ret->commit = commit;
125
126	if (strncmp(p, "tree ", 5))
127		die("Bad commit: %s", sha1_to_hex(commit->object.sha1));
128	else
129		p += 46; // "tree " + hex[40] + "\n"
130
131	while (!strncmp(p, "parent ", 7))
132		p += 48; // "parent " + hex[40] + "\n"
133
134	if (!strncmp(p, "author ", 7)) {
135		p += 7;
136		t = strchr(p, '<') - 1;
137		ret->author = substr(p, t);
138		p = t;
139		t = strchr(t, '>') + 1;
140		ret->author_email = substr(p, t);
141		ret->author_date = atol(++t);
142		p = strchr(t, '\n') + 1;
143	}
144
145	if (!strncmp(p, "committer ", 9)) {
146		p += 9;
147		t = strchr(p, '<') - 1;
148		ret->committer = substr(p, t);
149		p = t;
150		t = strchr(t, '>') + 1;
151		ret->committer_email = substr(p, t);
152		ret->committer_date = atol(++t);
153		p = strchr(t, '\n') + 1;
154	}
155
156	while (*p == '\n')
157		p = strchr(p, '\n') + 1;
158
159	t = strchr(p, '\n');
160	ret->subject = substr(p, t);
161	p = t + 1;
162
163	while (*p == '\n')
164		p = strchr(p, '\n') + 1;
165	ret->msg = p;
166
167	return ret;
168}