aboutsummaryrefslogtreecommitdiffhomepage
path: root/parser-cfg.c
blob: 7976939106c5c7e3f9854481da8f1ccdd7495ba0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247

/// \defgroup ConfigParsers Config parsers
///
/// The \ref ConfigParsers make use of the \ref Config to setup the config variables,
/// the command line parsers also build the playlist.
///@{

/// \file

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>

#ifdef MP_DEBUG
#include <assert.h>
#endif

#include "mp_msg.h"
#include "m_option.h"
#include "m_config.h"

/// Maximal include depth.
#define MAX_RECURSION_DEPTH	8

/// Current include depth.
static int recursion_depth = 0;

/// Setup the \ref Config from a config file.
/** \param config The config object.
 *  \param conffile Path to the config file.
 *  \return 1 on sucess, -1 on error.
 */
int m_config_parse_config_file(m_config_t* config, char *conffile)
{
#define PRINT_LINENUM	mp_msg(MSGT_CFGPARSER,MSGL_V,"%s(%d): ", conffile, line_num)
#define MAX_LINE_LEN	10000
#define MAX_OPT_LEN	1000
#define MAX_PARAM_LEN	1500
	FILE *fp;
	char *line;
	char opt[MAX_OPT_LEN + 1];
	char param[MAX_PARAM_LEN + 1];
	char c;		/* for the "" and '' check */
	int tmp;
	int line_num = 0;
	int line_pos;	/* line pos */
	int opt_pos;	/* opt pos */
	int param_pos;	/* param pos */
	int ret = 1;
	int errors = 0;
	int prev_mode = config->mode;
	m_profile_t* profile = NULL;

#ifdef MP_DEBUG
	assert(config != NULL);
	//	assert(conf_list != NULL);
#endif
	mp_msg(MSGT_CFGPARSER,MSGL_V,"Reading config file %s", conffile);

	if (recursion_depth > MAX_RECURSION_DEPTH) {
		mp_msg(MSGT_CFGPARSER,MSGL_ERR,": too deep 'include'. check your configfiles\n");
		ret = -1;
		goto out;
	} else
	  
	config->mode = M_CONFIG_FILE;

	if ((line = malloc(MAX_LINE_LEN + 1)) == NULL) {
		mp_msg(MSGT_CFGPARSER,MSGL_FATAL,"\ncan't get memory for 'line': %s", strerror(errno));
		ret = -1;
		goto out;
	} else

	mp_msg(MSGT_CFGPARSER,MSGL_V,"\n");

	if ((fp = fopen(conffile, "r")) == NULL) {
	  mp_msg(MSGT_CFGPARSER,MSGL_V,": %s\n", strerror(errno));
		free(line);
		ret = 0;
		goto out;
	}

	while (fgets(line, MAX_LINE_LEN, fp)) {
		if (errors >= 16) {
			mp_msg(MSGT_CFGPARSER,MSGL_FATAL,"too many errors\n");
			goto out;
		}

		line_num++;
		line_pos = 0;

		/* skip whitespaces */
		while (isspace(line[line_pos]))
			++line_pos;

		/* EOL / comment */
		if (line[line_pos] == '\0' || line[line_pos] == '#')
			continue;

		/* read option. */
		for (opt_pos = 0; isprint(line[line_pos]) &&
				line[line_pos] != ' ' &&
				line[line_pos] != '#' &&
				line[line_pos] != '='; /* NOTHING */) {
			opt[opt_pos++] = line[line_pos++];
			if (opt_pos >= MAX_OPT_LEN) {
				PRINT_LINENUM;
				mp_msg(MSGT_CFGPARSER,MSGL_ERR,"too long option at line %d\n",line_num);
				errors++;
				ret = -1;
				goto nextline;
			}
		}
		if (opt_pos == 0) {
			PRINT_LINENUM;
			mp_msg(MSGT_CFGPARSER,MSGL_ERR,"parse error at line %d\n",line_num);
			ret = -1;
			errors++;
			continue;
		}
		opt[opt_pos] = '\0';
		
		/* Profile declaration */
		if(opt_pos > 2 && opt[0] == '[' && opt[opt_pos-1] == ']') {
			opt[opt_pos-1] = '\0';
			if(strcmp(opt+1,"default"))
				profile = m_config_add_profile(config,opt+1);
			else
				profile = NULL;
			continue;
		}

#ifdef MP_DEBUG
		PRINT_LINENUM;
		mp_msg(MSGT_CFGPARSER,MSGL_V,"option: %s\n", opt);
#endif

		/* skip whitespaces */
		while (isspace(line[line_pos]))
			++line_pos;

		/* check '=' */
		if (line[line_pos++] != '=') {
			PRINT_LINENUM;
			mp_msg(MSGT_CFGPARSER,MSGL_ERR,"Option %s needs a parameter at line %d\n",opt,line_num);
			ret = -1;
			errors++;
			continue;
		}

		/* whitespaces... */
		while (isspace(line[line_pos]))
			++line_pos;

		/* read the parameter */
		if (line[line_pos] == '"' || line[line_pos] == '\'') {
			c = line[line_pos];
			++line_pos;
			for (param_pos = 0; line[line_pos] != c; /* NOTHING */) {
				param[param_pos++] = line[line_pos++];
				if (param_pos >= MAX_PARAM_LEN) {
					PRINT_LINENUM;
					mp_msg(MSGT_CFGPARSER,MSGL_ERR,"Option %s has a too long parameter at line %d\n",opt,line_num);
					ret = -1;
					errors++;
					goto nextline;
				}
			}
			line_pos++;	/* skip the closing " or ' */
		} else {
			for (param_pos = 0; isprint(line[line_pos]) && !isspace(line[line_pos])
					&& line[line_pos] != '#'; /* NOTHING */) {
				param[param_pos++] = line[line_pos++];
				if (param_pos >= MAX_PARAM_LEN) {
					PRINT_LINENUM;
					mp_msg(MSGT_CFGPARSER,MSGL_ERR,"too long parameter\n");
					ret = -1;
					errors++;
					goto nextline;
				}
			}
		}
		param[param_pos] = '\0';

		/* did we read a parameter? */
		if (param_pos == 0) {
			PRINT_LINENUM;
			mp_msg(MSGT_CFGPARSER,MSGL_ERR,"Option %s needs a parameter at line %d\n",opt,line_num);
			ret = -1;
			errors++;
			continue;
		}

#ifdef MP_DEBUG
		PRINT_LINENUM;
		mp_msg(MSGT_CFGPARSER,MSGL_V,"parameter: %s\n", param);
#endif

		/* now, check if we have some more chars on the line */
		/* whitespace... */
		while (isspace(line[line_pos]))
			++line_pos;

		/* EOL / comment */
		if (line[line_pos] != '\0' && line[line_pos] != '#') {
			PRINT_LINENUM;
			mp_msg(MSGT_CFGPARSER,MSGL_WARN,"extra characters on line %d: %s\n",line_num, line+line_pos);
			ret = -1;
		}

		if(profile) {
			if(!strcmp(opt,"profile-desc"))
				m_profile_set_desc(profile,param), tmp = 1;
			else
				tmp = m_config_set_profile_option(config,profile,
								  opt,param);
		} else
			tmp = m_config_set_option(config, opt, param);
		if (tmp < 0) {
			PRINT_LINENUM;
			if(tmp == M_OPT_UNKNOWN) {
				mp_msg(MSGT_CFGPARSER,MSGL_WARN,"Warning unknown option %s at line %d\n", opt,line_num);
				continue;
			}
			mp_msg(MSGT_CFGPARSER,MSGL_ERR,"Error parsing option %s=%s at line %d\n",opt,param,line_num);
			ret = -1;
			errors++;
			continue;
			/* break */
		}	
nextline:
		;
	}

	free(line);
	fclose(fp);
out:
	config->mode = prev_mode;
	--recursion_depth;
	return ret;
}

///@}