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1 | /* | |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
4 | * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net> | |
5 | * Copyright (C) 2006, Quy Tonthat <qtonthat@gmail.com> | |
6 | * Copyright (C) 2013, Guilhem Bonnefille <guilhem.bonnefille@gmail.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | /** | |
25 | * SECTION:babel | |
26 | * @short_description: running external programs and redirecting to TRWLayers. | |
27 | * | |
28 | * GPSBabel may not be necessary for everything -- for instance, | |
29 | * use a_babel_convert_from_shellcommand() with input_file_type == %NULL | |
30 | * for an external program that outputs GPX. | |
31 | */ | |
32 | ||
33 | #ifdef HAVE_CONFIG_H | |
34 | #include "config.h" | |
35 | #endif | |
36 | ||
37 | #include "viking.h" | |
38 | #include "gpx.h" | |
39 | #include "babel.h" | |
40 | #include <stdio.h> | |
41 | #ifdef HAVE_UNISTD_H | |
42 | #include <unistd.h> | |
43 | #endif | |
44 | #include <string.h> | |
45 | #include <glib.h> | |
46 | #include <glib/gstdio.h> | |
47 | ||
48 | /* TODO in the future we could have support for other shells (change command strings), or not use a shell at all */ | |
49 | #define BASH_LOCATION "/bin/bash" | |
50 | ||
51 | /** | |
52 | * List of supported protocols. | |
53 | */ | |
54 | const gchar *PROTOS[] = { "http://", "https://", "ftp://", NULL }; | |
55 | ||
56 | /** | |
57 | * Path to gpsbabel | |
58 | */ | |
59 | static gchar *gpsbabel_loc = NULL; | |
60 | ||
61 | /** | |
62 | * Path to unbuffer | |
63 | */ | |
64 | static gchar *unbuffer_loc = NULL; | |
65 | ||
66 | /** | |
67 | * List of file formats supported by gpsbabel. | |
68 | */ | |
69 | GList *a_babel_file_list; | |
70 | ||
71 | /** | |
72 | * List of device supported by gpsbabel. | |
73 | */ | |
74 | GList *a_babel_device_list; | |
75 | ||
76 | /** | |
77 | * a_babel_convert: | |
78 | * @vt: The TRW layer to modify. All data will be deleted, and replaced by what gpsbabel outputs. | |
79 | * @babelargs: A string containing gpsbabel command line filter options. No file types or names should | |
80 | * be specified. | |
81 | * @cb: A callback function. | |
82 | * @user_data: passed along to cb | |
83 | * @not_used: Must use NULL | |
84 | * | |
85 | * This function modifies data in a trw layer using gpsbabel filters. This routine is synchronous; | |
86 | * that is, it will block the calling program until the conversion is done. To avoid blocking, call | |
87 | * this routine from a worker thread. | |
88 | * | |
89 | * Returns: %TRUE on success | |
90 | */ | |
91 | gboolean a_babel_convert( VikTrwLayer *vt, const char *babelargs, BabelStatusFunc cb, gpointer user_data, gpointer not_used ) | |
92 | { | |
93 | int fd_src; | |
94 | FILE *f; | |
95 | gchar *name_src = NULL; | |
96 | gboolean ret = FALSE; | |
97 | gchar *bargs = g_strconcat(babelargs, " -i gpx", NULL); | |
98 | ||
99 | if ((fd_src = g_file_open_tmp("tmp-viking.XXXXXX", &name_src, NULL)) >= 0) { | |
100 | g_debug ("%s: temporary file: %s", __FUNCTION__, name_src); | |
101 | f = fdopen(fd_src, "w"); | |
102 | a_gpx_write_file(vt, f, NULL); | |
103 | fclose(f); | |
104 | f = NULL; | |
105 | ret = a_babel_convert_from ( vt, bargs, name_src, cb, user_data, not_used ); | |
106 | g_remove(name_src); | |
107 | g_free(name_src); | |
108 | } | |
109 | ||
110 | g_free(bargs); | |
111 | return ret; | |
112 | } | |
113 | ||
114 | /** | |
115 | * Perform any cleanup actions once GPSBabel has completed running | |
116 | */ | |
117 | static void babel_watch ( GPid pid, | |
118 | gint status, | |
119 | gpointer user_data ) | |
120 | { | |
121 | g_spawn_close_pid ( pid ); | |
122 | } | |
123 | ||
124 | /** | |
125 | * babel_general_convert: | |
126 | * @args: The command line arguments passed to GPSBabel | |
127 | * @cb: callback that is run for each line of GPSBabel output and at completion of the run | |
128 | * callback may be NULL | |
129 | * @user_data: passed along to cb | |
130 | * | |
131 | * The function to actually invoke the GPSBabel external command | |
132 | * | |
133 | * Returns: %TRUE on successful invocation of GPSBabel command | |
134 | */ | |
135 | static gboolean babel_general_convert( BabelStatusFunc cb, gchar **args, gpointer user_data ) | |
136 | { | |
137 | gboolean ret = FALSE; | |
138 | GPid pid; | |
139 | GError *error = NULL; | |
140 | gint babel_stdout; | |
141 | ||
142 | if (!g_spawn_async_with_pipes (NULL, args, NULL, G_SPAWN_DO_NOT_REAP_CHILD, NULL, NULL, &pid, NULL, &babel_stdout, NULL, &error)) { | |
143 | g_warning ("Async command failed: %s", error->message); | |
144 | g_error_free(error); | |
145 | ret = FALSE; | |
146 | } else { | |
147 | ||
148 | gchar line[512]; | |
149 | FILE *diag; | |
150 | diag = fdopen(babel_stdout, "r"); | |
151 | setvbuf(diag, NULL, _IONBF, 0); | |
152 | ||
153 | while (fgets(line, sizeof(line), diag)) { | |
154 | if ( cb ) | |
155 | cb(BABEL_DIAG_OUTPUT, line, user_data); | |
156 | } | |
157 | if ( cb ) | |
158 | cb(BABEL_DONE, NULL, user_data); | |
159 | fclose(diag); | |
160 | diag = NULL; | |
161 | ||
162 | g_child_watch_add ( pid, (GChildWatchFunc) babel_watch, NULL ); | |
163 | ||
164 | ret = TRUE; | |
165 | } | |
166 | ||
167 | return ret; | |
168 | } | |
169 | ||
170 | /** | |
171 | * babel_general_convert_from: | |
172 | * @vtl: The TrackWaypoint Layer to save the data into | |
173 | * If it is null it signifies that no data is to be processed, | |
174 | * however the gpsbabel command is still ran as it can be for non-data related options eg: | |
175 | * for use with the power off command - 'command_off' | |
176 | * @cb: callback that is run upon new data from STDOUT (?) | |
177 | * (TODO: STDERR would be nice since we usually redirect STDOUT) | |
178 | * @user_data: passed along to cb | |
179 | * | |
180 | * Runs args[0] with the arguments and uses the GPX module | |
181 | * to import the GPX data into layer vt. Assumes that upon | |
182 | * running the command, the data will appear in the (usually | |
183 | * temporary) file name_dst. | |
184 | * | |
185 | * Returns: %TRUE on success | |
186 | */ | |
187 | static gboolean babel_general_convert_from( VikTrwLayer *vt, BabelStatusFunc cb, gchar **args, const gchar *name_dst, gpointer user_data ) | |
188 | { | |
189 | gboolean ret = FALSE; | |
190 | FILE *f = NULL; | |
191 | ||
192 | if (babel_general_convert(cb, args, user_data)) { | |
193 | ||
194 | /* No data actually required but still need to have run gpsbabel anyway | |
195 | - eg using the device power command_off */ | |
196 | if ( vt == NULL ) | |
197 | return TRUE; | |
198 | ||
199 | f = g_fopen(name_dst, "r"); | |
200 | if (f) { | |
201 | ret = a_gpx_read_file ( vt, f ); | |
202 | fclose(f); | |
203 | f = NULL; | |
204 | } | |
205 | } | |
206 | ||
207 | return ret; | |
208 | } | |
209 | ||
210 | /** | |
211 | * a_babel_convert_from: | |
212 | * @vt: The TRW layer to place data into. Duplicate items will be overwritten. | |
213 | * @babelargs: A string containing gpsbabel command line options. In addition to any filters, this string | |
214 | * must include the input file type (-i) option. | |
215 | * @cb: Optional callback function. Same usage as in a_babel_convert(). | |
216 | * @user_data: passed along to cb | |
217 | * @not_used: Must use NULL | |
218 | * | |
219 | * Loads data into a trw layer from a file, using gpsbabel. This routine is synchronous; | |
220 | * that is, it will block the calling program until the conversion is done. To avoid blocking, call | |
221 | * this routine from a worker thread. | |
222 | * | |
223 | * Returns: %TRUE on success | |
224 | */ | |
225 | gboolean a_babel_convert_from( VikTrwLayer *vt, const char *babelargs, const char *from, BabelStatusFunc cb, gpointer user_data, gpointer not_used ) | |
226 | { | |
227 | int i,j; | |
228 | int fd_dst; | |
229 | gchar *name_dst = NULL; | |
230 | gboolean ret = FALSE; | |
231 | gchar *args[64]; | |
232 | ||
233 | if ((fd_dst = g_file_open_tmp("tmp-viking.XXXXXX", &name_dst, NULL)) >= 0) { | |
234 | g_debug ("%s: temporary file: %s", __FUNCTION__, name_dst); | |
235 | close(fd_dst); | |
236 | ||
237 | if (gpsbabel_loc ) { | |
238 | gchar **sub_args = g_strsplit(babelargs, " ", 0); | |
239 | ||
240 | i = 0; | |
241 | if (unbuffer_loc) | |
242 | args[i++] = unbuffer_loc; | |
243 | args[i++] = gpsbabel_loc; | |
244 | for (j = 0; sub_args[j]; j++) { | |
245 | /* some version of gpsbabel can not take extra blank arg */ | |
246 | if (sub_args[j][0] != '\0') | |
247 | args[i++] = sub_args[j]; | |
248 | } | |
249 | args[i++] = "-o"; | |
250 | args[i++] = "gpx"; | |
251 | args[i++] = "-f"; | |
252 | args[i++] = (char *)from; | |
253 | args[i++] = "-F"; | |
254 | args[i++] = name_dst; | |
255 | args[i] = NULL; | |
256 | ||
257 | ret = babel_general_convert_from ( vt, cb, args, name_dst, user_data ); | |
258 | ||
259 | g_strfreev(sub_args); | |
260 | } else | |
261 | g_critical("gpsbabel not found in PATH"); | |
262 | g_remove(name_dst); | |
263 | g_free(name_dst); | |
264 | } | |
265 | ||
266 | return ret; | |
267 | } | |
268 | ||
269 | /** | |
270 | * a_babel_convert_from_shellcommand: | |
271 | * @vt: The #VikTrwLayer where to insert the collected data | |
272 | * @input_cmd: the command to run | |
273 | * @cb: Optional callback function. Same usage as in a_babel_convert(). | |
274 | * @user_data: passed along to cb | |
275 | * @not_used: Must use NULL | |
276 | * | |
277 | * Runs the input command in a shell (bash) and optionally uses GPSBabel to convert from input_file_type. | |
278 | * If input_file_type is %NULL, doesn't use GPSBabel. Input must be GPX (or Geocaching *.loc) | |
279 | * | |
280 | * Uses babel_general_convert_from() to actually run the command. This function | |
281 | * prepares the command and temporary file, and sets up the arguments for bash. | |
282 | */ | |
283 | gboolean a_babel_convert_from_shellcommand ( VikTrwLayer *vt, const char *input_cmd, const char *input_file_type, BabelStatusFunc cb, gpointer user_data, gpointer not_used ) | |
284 | { | |
285 | int fd_dst; | |
286 | gchar *name_dst = NULL; | |
287 | gboolean ret = FALSE; | |
288 | gchar **args; | |
289 | ||
290 | if ((fd_dst = g_file_open_tmp("tmp-viking.XXXXXX", &name_dst, NULL)) >= 0) { | |
291 | g_debug ("%s: temporary file: %s", __FUNCTION__, name_dst); | |
292 | gchar *shell_command; | |
293 | if ( input_file_type ) | |
294 | shell_command = g_strdup_printf("%s | %s -i %s -f - -o gpx -F %s", | |
295 | input_cmd, gpsbabel_loc, input_file_type, name_dst); | |
296 | else | |
297 | shell_command = g_strdup_printf("%s > %s", input_cmd, name_dst); | |
298 | ||
299 | g_debug("%s: %s", __FUNCTION__, shell_command); | |
300 | close(fd_dst); | |
301 | ||
302 | args = g_malloc(sizeof(gchar *)*4); | |
303 | args[0] = BASH_LOCATION; | |
304 | args[1] = "-c"; | |
305 | args[2] = shell_command; | |
306 | args[3] = NULL; | |
307 | ||
308 | ret = babel_general_convert_from ( vt, cb, args, name_dst, user_data ); | |
309 | g_free ( args ); | |
310 | g_free ( shell_command ); | |
311 | g_remove(name_dst); | |
312 | g_free(name_dst); | |
313 | } | |
314 | ||
315 | return ret; | |
316 | } | |
317 | ||
318 | /** | |
319 | * a_babel_convert_from_url: | |
320 | * @vt: The #VikTrwLayer where to insert the collected data | |
321 | * @url: the URL to fetch | |
322 | * @cb: Optional callback function. Same usage as in a_babel_convert(). | |
323 | * @user_data: passed along to cb | |
324 | * @options: download options. Maybe NULL. | |
325 | * | |
326 | * Download the file pointed by the URL and optionally uses GPSBabel to convert from input_file_type. | |
327 | * If input_file_type is %NULL, doesn't use GPSBabel. Input must be GPX. | |
328 | * | |
329 | * Returns: %TRUE on successful invocation of GPSBabel or read of the GPX | |
330 | * | |
331 | */ | |
332 | gboolean a_babel_convert_from_url ( VikTrwLayer *vt, const char *url, const char *input_type, BabelStatusFunc cb, gpointer user_data, DownloadMapOptions *options ) | |
333 | { | |
334 | // If no download options specified, use defaults: | |
335 | DownloadMapOptions myoptions = { FALSE, FALSE, NULL, 2, NULL, NULL }; | |
336 | if ( options ) | |
337 | myoptions = *options; | |
338 | gint fd_src; | |
339 | int fetch_ret; | |
340 | gboolean ret = FALSE; | |
341 | gchar *name_src = NULL; | |
342 | gchar *babelargs = NULL; | |
343 | ||
344 | g_debug("%s: input_type=%s url=%s", __FUNCTION__, input_type, url); | |
345 | ||
346 | if ((fd_src = g_file_open_tmp("tmp-viking.XXXXXX", &name_src, NULL)) >= 0) { | |
347 | g_debug ("%s: temporary file: %s", __FUNCTION__, name_src); | |
348 | close(fd_src); | |
349 | g_remove(name_src); | |
350 | ||
351 | fetch_ret = a_http_download_get_url(url, "", name_src, &myoptions, NULL); | |
352 | if (fetch_ret == 0) { | |
353 | if (input_type != NULL) { | |
354 | babelargs = g_strdup_printf(" -i %s", input_type); | |
355 | ret = a_babel_convert_from( vt, babelargs, name_src, NULL, NULL, NULL ); | |
356 | } else { | |
357 | /* Process directly the retrieved file */ | |
358 | g_debug("%s: directly read GPX file %s", __FUNCTION__, name_src); | |
359 | FILE *f = g_fopen(name_src, "r"); | |
360 | if (f) { | |
361 | ret = a_gpx_read_file ( vt, f ); | |
362 | fclose(f); | |
363 | f = NULL; | |
364 | } | |
365 | } | |
366 | } | |
367 | g_remove(name_src); | |
368 | g_free(babelargs); | |
369 | g_free(name_src); | |
370 | } | |
371 | ||
372 | return ret; | |
373 | } | |
374 | ||
375 | /** | |
376 | * a_babel_convert_from_url_or_shell: | |
377 | * @vt: The #VikTrwLayer where to insert the collected data | |
378 | * @url: the URL to fetch | |
379 | * @cb: Optional callback function. Same usage as in a_babel_convert(). | |
380 | * @user_data: passed along to cb | |
381 | * @options: download options. Maybe NULL. | |
382 | * | |
383 | * Download the file pointed by the URL and optionally uses GPSBabel to convert from input_file_type. | |
384 | * If input_file_type is %NULL, doesn't use GPSBabel. Input must be GPX. | |
385 | * | |
386 | * Returns: %TRUE on successful invocation of GPSBabel or read of the GPX | |
387 | * | |
388 | */ | |
389 | gboolean a_babel_convert_from_url_or_shell ( VikTrwLayer *vt, const char *input, const char *input_type, BabelStatusFunc cb, gpointer user_data, DownloadMapOptions *options ) | |
390 | { | |
391 | ||
392 | /* Check nature of input */ | |
393 | gboolean isUrl = FALSE; | |
394 | int i = 0; | |
395 | for (i = 0 ; PROTOS[i] != NULL ; i++) | |
396 | { | |
397 | const gchar *proto = PROTOS[i]; | |
398 | if (strncmp (input, proto, strlen(proto)) == 0) | |
399 | { | |
400 | /* Procotol matches: save result */ | |
401 | isUrl = TRUE; | |
402 | } | |
403 | } | |
404 | ||
405 | /* Do the job */ | |
406 | if (isUrl) | |
407 | return a_babel_convert_from_url (vt, input, input_type, cb, user_data, options); | |
408 | else | |
409 | return a_babel_convert_from_shellcommand (vt, input, input_type, cb, user_data, options); | |
410 | } | |
411 | ||
412 | static gboolean babel_general_convert_to( VikTrwLayer *vt, VikTrack *trk, BabelStatusFunc cb, gchar **args, const gchar *name_src, gpointer user_data ) | |
413 | { | |
414 | // Now strips out invisible tracks and waypoints | |
415 | if (!a_file_export(vt, name_src, FILE_TYPE_GPX, trk, FALSE)) { | |
416 | g_critical("Error exporting to %s", name_src); | |
417 | return FALSE; | |
418 | } | |
419 | ||
420 | return babel_general_convert (cb, args, user_data); | |
421 | } | |
422 | ||
423 | /** | |
424 | * a_babel_convert_to: | |
425 | * @vt: The TRW layer from which data is taken. | |
426 | * @track: Operate on the individual track if specified. Use NULL when operating on a TRW layer | |
427 | * @babelargs: A string containing gpsbabel command line options. In addition to any filters, this string | |
428 | * must include the input file type (-i) option. | |
429 | * @to: Filename or device the data is written to. | |
430 | * @cb: Optional callback function. Same usage as in a_babel_convert. | |
431 | * @user_data: passed along to cb | |
432 | * | |
433 | * Exports data using gpsbabel. This routine is synchronous; | |
434 | * that is, it will block the calling program until the conversion is done. To avoid blocking, call | |
435 | * this routine from a worker thread. | |
436 | * | |
437 | * Returns: %TRUE on successful invocation of GPSBabel command | |
438 | */ | |
439 | gboolean a_babel_convert_to( VikTrwLayer *vt, VikTrack *track, const char *babelargs, const char *to, BabelStatusFunc cb, gpointer user_data ) | |
440 | { | |
441 | int i,j; | |
442 | int fd_src; | |
443 | gchar *name_src = NULL; | |
444 | gboolean ret = FALSE; | |
445 | gchar *args[64]; | |
446 | ||
447 | if ((fd_src = g_file_open_tmp("tmp-viking.XXXXXX", &name_src, NULL)) >= 0) { | |
448 | g_debug ("%s: temporary file: %s", __FUNCTION__, name_src); | |
449 | close(fd_src); | |
450 | ||
451 | if (gpsbabel_loc ) { | |
452 | gchar **sub_args = g_strsplit(babelargs, " ", 0); | |
453 | ||
454 | i = 0; | |
455 | if (unbuffer_loc) | |
456 | args[i++] = unbuffer_loc; | |
457 | args[i++] = gpsbabel_loc; | |
458 | args[i++] = "-i"; | |
459 | args[i++] = "gpx"; | |
460 | for (j = 0; sub_args[j]; j++) | |
461 | /* some version of gpsbabel can not take extra blank arg */ | |
462 | if (sub_args[j][0] != '\0') | |
463 | args[i++] = sub_args[j]; | |
464 | args[i++] = "-f"; | |
465 | args[i++] = name_src; | |
466 | args[i++] = "-F"; | |
467 | args[i++] = (char *)to; | |
468 | args[i] = NULL; | |
469 | ||
470 | ret = babel_general_convert_to ( vt, track, cb, args, name_src, user_data ); | |
471 | ||
472 | g_strfreev(sub_args); | |
473 | } else | |
474 | g_critical("gpsbabel not found in PATH"); | |
475 | g_remove(name_src); | |
476 | g_free(name_src); | |
477 | } | |
478 | ||
479 | return ret; | |
480 | } | |
481 | ||
482 | static void set_mode(BabelMode mode, gchar *smode) | |
483 | { | |
484 | mode.waypointsRead = smode[0] == 'r'; | |
485 | mode.waypointsWrite = smode[1] == 'w'; | |
486 | mode.tracksRead = smode[2] == 'r'; | |
487 | mode.tracksWrite = smode[3] == 'w'; | |
488 | mode.routesRead = smode[4] == 'r'; | |
489 | mode.routesWrite = smode[5] == 'w'; | |
490 | } | |
491 | ||
492 | /** | |
493 | * load_feature_parse_line: | |
494 | * | |
495 | * Load a single feature stored in the given line. | |
496 | */ | |
497 | static void load_feature_parse_line (gchar *line) | |
498 | { | |
499 | gchar **tokens = g_strsplit ( line, "\t", 0 ); | |
500 | if ( tokens != NULL | |
501 | && tokens[0] != NULL ) { | |
502 | if ( strcmp("serial", tokens[0]) == 0 ) { | |
503 | if ( tokens[1] != NULL | |
504 | && tokens[2] != NULL | |
505 | && tokens[3] != NULL | |
506 | && tokens[4] != NULL ) { | |
507 | BabelDevice *device = g_malloc ( sizeof (BabelDevice) ); | |
508 | set_mode (device->mode, tokens[1]); | |
509 | device->name = g_strdup (tokens[2]); | |
510 | device->label = g_strndup (tokens[4], 50); // Limit really long label text | |
511 | a_babel_device_list = g_list_append (a_babel_device_list, device); | |
512 | g_debug ("New gpsbabel device: %s", device->name); | |
513 | } else { | |
514 | g_warning ( "Unexpected gpsbabel format string: %s", line); | |
515 | } | |
516 | } else if ( strcmp("file", tokens[0]) == 0 ) { | |
517 | if ( tokens[1] != NULL | |
518 | && tokens[2] != NULL | |
519 | && tokens[3] != NULL | |
520 | && tokens[4] != NULL ) { | |
521 | BabelFile *file = g_malloc ( sizeof (BabelFile) ); | |
522 | set_mode (file->mode, tokens[1]); | |
523 | file->name = g_strdup (tokens[2]); | |
524 | file->ext = g_strdup (tokens[3]); | |
525 | file->label = g_strdup (tokens[4]); | |
526 | a_babel_file_list = g_list_append (a_babel_file_list, file); | |
527 | g_debug ("New gpsbabel file: %s", file->name); | |
528 | } else { | |
529 | g_warning ( "Unexpected gpsbabel format string: %s", line); | |
530 | } | |
531 | } /* else: ignore */ | |
532 | } else { | |
533 | g_warning ( "Unexpected gpsbabel format string: %s", line); | |
534 | } | |
535 | g_strfreev ( tokens ); | |
536 | } | |
537 | ||
538 | static void load_feature_cb (BabelProgressCode code, gpointer line, gpointer user_data) | |
539 | { | |
540 | if (line != NULL) | |
541 | load_feature_parse_line (line); | |
542 | } | |
543 | ||
544 | static gboolean load_feature () | |
545 | { | |
546 | int i; | |
547 | gboolean ret = FALSE; | |
548 | gchar *args[4]; | |
549 | ||
550 | if ( gpsbabel_loc ) { | |
551 | i = 0; | |
552 | if ( unbuffer_loc ) | |
553 | args[i++] = unbuffer_loc; | |
554 | args[i++] = gpsbabel_loc; | |
555 | args[i++] = "-^3"; | |
556 | args[i] = NULL; | |
557 | ||
558 | ret = babel_general_convert (load_feature_cb, args, NULL); | |
559 | } else | |
560 | g_critical("gpsbabel not found in PATH"); | |
561 | ||
562 | return ret; | |
563 | } | |
564 | ||
565 | /** | |
566 | * a_babel_init: | |
567 | * | |
568 | * Initialises babel module. | |
569 | * Mainly check existence of gpsbabel progam | |
570 | * and load all features available in ths version. | |
571 | */ | |
572 | void a_babel_init () | |
573 | { | |
574 | /* TODO allow to set gpsbabel path via command line */ | |
575 | gpsbabel_loc = g_find_program_in_path( "gpsbabel" ); | |
576 | if ( !gpsbabel_loc ) | |
577 | g_critical( "gpsbabel not found in PATH" ); | |
578 | ||
579 | // Unlikely to package unbuffer on Windows so ATM don't even bother trying | |
580 | // Highly unlikely unbuffer is available on a Windows system otherwise | |
581 | #ifndef WINDOWS | |
582 | unbuffer_loc = g_find_program_in_path( "unbuffer" ); | |
583 | if ( !unbuffer_loc ) | |
584 | g_warning( "unbuffer not found in PATH" ); | |
585 | #endif | |
586 | ||
587 | load_feature (); | |
588 | } | |
589 | ||
590 | /** | |
591 | * a_babel_uninit: | |
592 | * | |
593 | * Free resources acquired by a_babel_init. | |
594 | */ | |
595 | void a_babel_uninit () | |
596 | { | |
597 | g_free ( gpsbabel_loc ); | |
598 | g_free ( unbuffer_loc ); | |
599 | ||
600 | if ( a_babel_file_list ) { | |
601 | GList *gl; | |
602 | for (gl = a_babel_file_list; gl != NULL; gl = g_list_next(gl)) { | |
603 | BabelFile *file = gl->data; | |
604 | g_free ( file->name ); | |
605 | g_free ( file->ext ); | |
606 | g_free ( file->label ); | |
607 | g_free ( gl->data ); | |
608 | } | |
609 | g_list_free ( a_babel_file_list ); | |
610 | } | |
611 | ||
612 | if ( a_babel_device_list ) { | |
613 | GList *gl; | |
614 | for (gl = a_babel_device_list; gl != NULL; gl = g_list_next(gl)) { | |
615 | BabelDevice *device = gl->data; | |
616 | g_free ( device->name ); | |
617 | g_free ( device->label ); | |
618 | g_free ( gl->data ); | |
619 | } | |
620 | g_list_free ( a_babel_device_list ); | |
621 | } | |
622 | ||
623 | } |