aboutsummaryrefslogtreecommitdiffhomepage
path: root/options/parse_commandline.c
blob: b90912e786ea5cd87f912dda433f620b3e2b97e2 (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
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
/*
 * This file is part of mpv.
 *
 * mpv is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * mpv is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with mpv.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <stdbool.h>

#include "osdep/io.h"
#include "common/global.h"
#include "common/msg.h"
#include "common/msg_control.h"
#include "m_option.h"
#include "m_config.h"
#include "options.h"
#include "common/playlist.h"
#include "parse_commandline.h"

#define GLOBAL 0
#define LOCAL 1

#define dvd_range(a)  (a >= 0 && a < 255)


struct parse_state {
    struct m_config *config;
    char **argv;

    bool no_more_opts;
    bool error;

    bool is_opt;
    struct bstr arg;
    struct bstr param;
};

// Returns 0 if a valid option/file is available, <0 on error, 1 on end of args.
static int split_opt_silent(struct parse_state *p)
{
    assert(!p->error);

    if (!p->argv || !p->argv[0])
        return 1;

    p->is_opt = false;
    p->arg = bstr0(p->argv[0]);
    p->param = bstr0(NULL);

    p->argv++;

    if (p->no_more_opts || !bstr_startswith0(p->arg, "-") || p->arg.len == 1)
        return 0;

    if (bstrcmp0(p->arg, "--") == 0) {
        p->no_more_opts = true;
        return split_opt_silent(p);
    }

    p->is_opt = true;

    if (!bstr_eatstart0(&p->arg, "--"))
        bstr_eatstart0(&p->arg, "-");

    bool ambiguous = !bstr_split_tok(p->arg, "=", &p->arg, &p->param);

    if (!p->arg.len)
        return M_OPT_INVALID;

    bool need_param = m_config_option_requires_param(p->config, p->arg) > 0;

    if (ambiguous && need_param) {
        if (!p->argv[0])
            return M_OPT_MISSING_PARAM;
        p->param = bstr0(p->argv[0]);
        p->argv++;
    }

    return 0;
}

// Returns true if more args, false if all parsed or an error occurred.
static bool split_opt(struct parse_state *p)
{
    int r = split_opt_silent(p);
    if (r >= 0)
        return r == 0;
    p->error = true;

    MP_FATAL(p->config, "Error parsing command line option '%.*s': %s\n",
             BSTR_P(p->arg), m_option_strerror(r));
    return false;
}

#ifdef __MINGW32__
static void process_non_option(struct playlist *files, const char *arg)
{
    glob_t gg;

    // Glob filenames on Windows (cmd.exe doesn't do this automatically)
    if (glob(arg, 0, NULL, &gg)) {
        playlist_add_file(files, arg);
    } else {
        for (int i = 0; i < gg.gl_pathc; i++)
            playlist_add_file(files, gg.gl_pathv[i]);

        globfree(&gg);
    }
}
#else
static void process_non_option(struct playlist *files, const char *arg)
{
    playlist_add_file(files, arg);
}
#endif

// returns M_OPT_... error code
int m_config_parse_mp_command_line(m_config_t *config, struct playlist *files,
                                   struct mpv_global *global, char **argv)
{
    int ret = M_OPT_UNKNOWN;
    int mode = 0;
    struct playlist_entry *local_start = NULL;

    int local_params_count = 0;
    struct playlist_param *local_params = 0;

    assert(config != NULL);

    mode = GLOBAL;

    struct parse_state p = {config, argv};
    while (split_opt(&p)) {
        if (p.is_opt) {
            int flags = M_SETOPT_FROM_CMDLINE;
            if (mode == LOCAL)
                flags |= M_SETOPT_BACKUP | M_SETOPT_CHECK_ONLY;
            int r = m_config_set_option_ext(config, p.arg, p.param, flags);
            if (r == M_OPT_EXIT) {
                ret = r;
                goto err_out;
            } else if (r < 0) {
                MP_FATAL(config, "Setting command line option '--%.*s=%.*s' failed.\n",
                         BSTR_P(p.arg), BSTR_P(p.param));
                goto err_out;
            }

            // Handle some special arguments outside option parser.

            if (!bstrcmp0(p.arg, "{")) {
                if (mode != GLOBAL) {
                    MP_ERR(config, "'--{' can not be nested.\n");
                    goto err_out;
                }
                mode = LOCAL;
                assert(!local_start);
                local_start = files->last;
                continue;
            }

            if (!bstrcmp0(p.arg, "}")) {
                if (mode != LOCAL) {
                    MP_ERR(config, "Too many closing '--}'.\n");
                    goto err_out;
                }
                if (local_params_count) {
                    // The files added between '{' and '}' are the entries from
                    // the entry _after_ local_start, until the end of the list.
                    // If local_start is NULL, the list was empty on '{', and we
                    // want all files in the list.
                    struct playlist_entry *cur
                        = local_start ? local_start->next : files->first;
                    if (!cur)
                        MP_WARN(config, "Ignored options!\n");
                    while (cur) {
                        playlist_entry_add_params(cur, local_params,
                                                local_params_count);
                        cur = cur->next;
                    }
                }
                local_params_count = 0;
                mode = GLOBAL;
                m_config_restore_backups(config);
                local_start = NULL;
                continue;
            }

            if (bstrcmp0(p.arg, "playlist") == 0) {
                // append the playlist to the local args
                char *param0 = bstrdup0(NULL, p.param);
                struct playlist *pl = playlist_parse_file(param0, global);
                talloc_free(param0);
                if (!pl) {
                    MP_FATAL(config, "Error reading playlist '%.*s'\n",
                             BSTR_P(p.param));
                    goto err_out;
                }
                playlist_transfer_entries(files, pl);
                talloc_free(pl);
                continue;
            }

            if (mode == LOCAL) {
                MP_TARRAY_APPEND(NULL, local_params, local_params_count,
                                 (struct playlist_param) {p.arg, p.param});
            }
        } else {
            // filename
            void *tmp = talloc_new(NULL);
            bstr file = p.arg;
            char *file0 = bstrdup0(tmp, p.arg);
            // expand DVD filename entries like dvd://1-3 into component titles
            if (bstr_startswith0(file, "dvd://")) {
                int offset = 6;
                char *splitpos = strstr(file0 + offset, "-");
                if (splitpos != NULL) {
                    char *endpos;
                    int start_title = strtol(file0 + offset, &endpos, 10);
                    int end_title;
                    //entries like dvd://-2 imply start at title 1
                    if (start_title < 0) {
                        end_title = abs(start_title);
                        start_title = 1;
                    } else
                        end_title = strtol(splitpos + 1, &endpos, 10);

                    if (dvd_range(start_title) && dvd_range(end_title)
                            && (start_title < end_title)) {
                        for (int j = start_title; j <= end_title; j++) {
                            char *f = talloc_asprintf(tmp, "dvd://%d%s", j,
                                                      endpos);
                            playlist_add_file(files, f);
                        }
                    } else
                        MP_ERR(config, "Invalid play entry %s\n", file0);

                } else // dvd:// or dvd://x entry
                    playlist_add_file(files, file0);
            } else {
                process_non_option(files, file0);
            }
            talloc_free(tmp);
        }
    }

    if (p.error)
        goto err_out;

    if (mode != GLOBAL) {
        MP_ERR(config, "Missing closing --} on command line.\n");
        goto err_out;
    }

    ret = 0; // success

err_out:
    talloc_free(local_params);
    m_config_restore_backups(config);
    return ret;
}

/* Parse some command line options early before main parsing.
 * --no-config prevents reading configuration files (otherwise done before
 * command line parsing), and --really-quiet suppresses messages printed
 * during normal options parsing.
 */
void m_config_preparse_command_line(m_config_t *config, struct mpv_global *global,
                                    char **argv)
{
    struct MPOpts *opts = global->opts;

    struct parse_state p = {config, argv};
    while (split_opt_silent(&p) == 0) {
        if (p.is_opt) {
            // Ignore non-pre-parse options. They will be set later.
            // Option parsing errors will be handled later as well.
            int flags = M_SETOPT_FROM_CMDLINE | M_SETOPT_PRE_PARSE_ONLY;
            m_config_set_option_ext(config, p.arg, p.param, flags);
            if (bstrcmp0(p.arg, "v") == 0)
                opts->verbose++;
        }
    }

    for (int n = 0; n < config->num_opts; n++)
        config->opts[n].warning_was_printed = false;
}