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7d02a0b0 GB |
1 | /* |
2 | * Viking - GPS data editor | |
a482007a | 3 | * Copyright (C) 2007, Guilhem Bonnefille <guilhem.bonnefille@gmail.com> |
44871dd1 | 4 | * Copyright (C) 2014, Rob Norris <rw_norris@hotmail.com> |
7d02a0b0 GB |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
60efaeb1 RN |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. | |
7d02a0b0 GB |
10 | * |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
5ab2942c | 20 | /* |
6a280b85 RN |
21 | * Dependencies must be just on Glib |
22 | * see ui_utils for thing that depend on Gtk | |
5ab2942c RN |
23 | * see vikutils for things that further depend on other Viking types |
24 | */ | |
4c77d5e0 GB |
25 | #ifdef HAVE_CONFIG_H |
26 | #include "config.h" | |
27 | #endif | |
28 | ||
91c46f90 | 29 | #include <glib/gstdio.h> |
4c77d5e0 | 30 | #include <glib/gi18n.h> |
c612e922 | 31 | #include <glib/gprintf.h> |
73def8cb | 32 | #include <gio/gio.h> |
7d02a0b0 | 33 | |
8e562a70 | 34 | #include "util.h" |
81bf47ee | 35 | #include "globals.h" |
872840c0 | 36 | #include "fileutils.h" |
7d02a0b0 | 37 | |
6b6225cb RN |
38 | #ifdef WINDOWS |
39 | #include <windows.h> | |
40 | #else | |
41 | #include <unistd.h> | |
42 | #endif | |
43 | ||
44 | guint util_get_number_of_cpus () | |
45 | { | |
46 | #if GLIB_CHECK_VERSION (2, 36, 0) | |
47 | return g_get_num_processors(); | |
48 | #else | |
49 | long nprocs = 1; | |
50 | #ifdef WINDOWS | |
51 | SYSTEM_INFO info; | |
52 | GetSystemInfo(&info); | |
53 | nprocs = info.dwNumberOfProcessors; | |
54 | #else | |
55 | #ifdef _SC_NPROCESSORS_ONLN | |
56 | nprocs = sysconf(_SC_NPROCESSORS_ONLN); | |
57 | if (nprocs < 1) | |
58 | nprocs = 1; | |
59 | #endif | |
60 | #endif | |
61 | return nprocs; | |
62 | #endif | |
63 | } | |
64 | ||
0da89d90 RN |
65 | /** |
66 | * split_string_from_file_on_equals: | |
67 | * | |
68 | * @buf: the input string | |
69 | * @key: newly allocated string that is before the '=' | |
70 | * @val: newly allocated string after the '=' | |
71 | * | |
72 | * Designed for file line processing, so it ignores strings beginning with special | |
73 | * characters, such as '#'; returns false in such situations. | |
74 | * Also returns false if no equals character is found | |
75 | * | |
76 | * e.g. if buf = "GPS.parameter=42" | |
77 | * key = "GPS.parameter" | |
78 | * val = "42" | |
79 | */ | |
80 | gboolean split_string_from_file_on_equals ( const gchar *buf, gchar **key, gchar **val ) | |
9106934d | 81 | { |
9106934d RN |
82 | // comments, special characters in viking file format |
83 | if ( buf == NULL || buf[0] == '\0' || buf[0] == '~' || buf[0] == '=' || buf[0] == '#' ) | |
84 | return FALSE; | |
0da89d90 RN |
85 | |
86 | if ( ! strchr ( buf, '=' ) ) | |
9106934d | 87 | return FALSE; |
0da89d90 RN |
88 | |
89 | gchar **strv = g_strsplit ( buf, "=", 2 ); | |
90 | ||
91 | gint gi = 0; | |
92 | gchar *str = strv[gi]; | |
93 | while ( str ) { | |
94 | if ( gi == 0 ) | |
95 | *key = g_strdup ( str ); | |
96 | else | |
97 | *val = g_strdup ( str ); | |
98 | gi++; | |
99 | str = strv[gi]; | |
100 | } | |
101 | ||
102 | g_strfreev ( strv ); | |
103 | ||
104 | // Remove newline from val and also any other whitespace | |
105 | *key = g_strstrip ( *key ); | |
106 | *val = g_strstrip ( *val ); | |
9106934d RN |
107 | return TRUE; |
108 | } | |
44871dd1 RN |
109 | |
110 | static GSList* deletion_list = NULL; | |
111 | ||
112 | /** | |
113 | * util_add_to_deletion_list: | |
114 | * | |
115 | * Add a name of a file into the list that is to be deleted on program exit | |
116 | * Normally this is for files that get used asynchronously, | |
117 | * so we don't know when it's time to delete them - other than at this program's end | |
118 | */ | |
119 | void util_add_to_deletion_list ( const gchar* filename ) | |
120 | { | |
121 | deletion_list = g_slist_append ( deletion_list, g_strdup (filename) ); | |
122 | } | |
123 | ||
124 | /** | |
125 | * util_remove_all_in_deletion_list: | |
126 | * | |
127 | * Delete all the files in the deletion list | |
128 | * This should only be called on program exit | |
129 | */ | |
130 | void util_remove_all_in_deletion_list ( void ) | |
131 | { | |
132 | while ( deletion_list ) | |
133 | { | |
fd437981 RN |
134 | if ( g_remove ( (const char*)deletion_list->data ) ) |
135 | g_warning ( "%s: Failed to remove %s", __FUNCTION__, (char*)deletion_list->data ); | |
44871dd1 RN |
136 | g_free ( deletion_list->data ); |
137 | deletion_list = g_slist_delete_link ( deletion_list, deletion_list ); | |
138 | } | |
139 | } | |
6a280b85 RN |
140 | |
141 | /** | |
142 | * Removes characters from a string, in place. | |
143 | * | |
144 | * @param string String to search. | |
145 | * @param chars Characters to remove. | |
146 | * | |
147 | * @return @a string - return value is only useful when nesting function calls, e.g.: | |
148 | * @code str = utils_str_remove_chars(g_strdup("f_o_o"), "_"); @endcode | |
149 | * | |
150 | * @see @c g_strdelimit. | |
151 | **/ | |
152 | gchar *util_str_remove_chars(gchar *string, const gchar *chars) | |
153 | { | |
154 | const gchar *r; | |
155 | gchar *w = string; | |
156 | ||
157 | g_return_val_if_fail(string, NULL); | |
158 | if (G_UNLIKELY(EMPTY(chars))) | |
159 | return string; | |
160 | ||
161 | foreach_str(r, string) | |
162 | { | |
163 | if (!strchr(chars, *r)) | |
164 | *w++ = *r; | |
165 | } | |
166 | *w = 0x0; | |
167 | return string; | |
168 | } | |
81bf47ee RN |
169 | |
170 | /** | |
171 | * In 'extreme' debug mode don't remove temporary files | |
172 | * thus the contents can be inspected if things go wrong | |
173 | * with the trade off the user may need to delete tmp files manually | |
174 | * Only use this for 'occasional' downloaded temporary files that need interpretation, | |
175 | * rather than large volume items such as Bing attributions. | |
176 | */ | |
177 | int util_remove ( const gchar *filename ) | |
178 | { | |
179 | if ( vik_debug && vik_verbose ) { | |
180 | g_warning ( "Not removing file: %s", filename ); | |
181 | return 0; | |
182 | } | |
183 | else | |
184 | return g_remove ( filename ); | |
185 | } | |
73def8cb RN |
186 | |
187 | /** | |
188 | * Stream write buffer to a temporary file (in one go) | |
189 | * | |
190 | * @param buffer The buffer to write | |
191 | * @param count Size of the buffer to write | |
192 | * | |
193 | * @return the filename of the buffer that was written | |
194 | */ | |
195 | gchar* util_write_tmp_file_from_bytes ( const void *buffer, gsize count ) | |
196 | { | |
197 | GFileIOStream *gios; | |
198 | GError *error = NULL; | |
199 | gchar *tmpname = NULL; | |
200 | ||
201 | #if GLIB_CHECK_VERSION(2,32,0) | |
202 | GFile *gf = g_file_new_tmp ( "vik-tmp.XXXXXX", &gios, &error ); | |
203 | tmpname = g_file_get_path (gf); | |
204 | #else | |
205 | gint fd = g_file_open_tmp ( "vik-tmp.XXXXXX", &tmpname, &error ); | |
206 | if ( error ) { | |
207 | g_warning ( "%s", error->message ); | |
208 | g_error_free ( error ); | |
209 | return NULL; | |
210 | } | |
211 | gios = g_file_open_readwrite ( g_file_new_for_path (tmpname), NULL, &error ); | |
212 | if ( error ) { | |
213 | g_warning ( "%s", error->message ); | |
214 | g_error_free ( error ); | |
215 | return NULL; | |
216 | } | |
217 | #endif | |
218 | ||
219 | gios = g_file_open_readwrite ( g_file_new_for_path (tmpname), NULL, &error ); | |
220 | if ( error ) { | |
221 | g_warning ( "%s", error->message ); | |
222 | g_error_free ( error ); | |
223 | return NULL; | |
224 | } | |
225 | ||
226 | GOutputStream *gos = g_io_stream_get_output_stream ( G_IO_STREAM(gios) ); | |
227 | if ( g_output_stream_write ( gos, buffer, count, NULL, &error ) < 0 ) { | |
228 | g_critical ( "Couldn't write tmp %s file due to %s", tmpname, error->message ); | |
229 | g_free (tmpname); | |
230 | tmpname = NULL; | |
231 | } | |
232 | ||
233 | g_output_stream_close ( gos, NULL, &error ); | |
234 | g_object_unref ( gios ); | |
235 | ||
236 | return tmpname; | |
237 | } | |
872840c0 RN |
238 | |
239 | /** | |
240 | * util_make_absolute_filename: | |
241 | * | |
242 | * Returns a newly allocated string of the absolute filename or | |
243 | * NULL if name is already absolute (or dirpath is unusable) | |
244 | */ | |
245 | gchar* util_make_absolute_filename ( const gchar *filename, const gchar *dirpath ) | |
246 | { | |
247 | if ( !dirpath ) return NULL; | |
248 | ||
249 | // Is it ready absolute? | |
250 | if ( g_path_is_absolute ( filename ) ) { | |
251 | return NULL; | |
252 | } | |
253 | else { | |
254 | // Otherwise create the absolute filename from the given directory and filename | |
255 | gchar *full = g_strconcat ( dirpath, G_DIR_SEPARATOR_S, filename, NULL ); | |
256 | gchar *absolute = file_realpath_dup ( full ); // resolved into the canonical name | |
257 | g_free ( full ); | |
258 | return absolute; | |
259 | } | |
260 | } | |
261 | ||
262 | /** | |
263 | * util_make_absolute_filenames: | |
264 | * | |
265 | * Ensures the supplied list of filenames are all absolute | |
266 | */ | |
267 | void util_make_absolute_filenames ( GList *filenames, const gchar *dirpath ) | |
268 | { | |
269 | if ( !filenames ) return; | |
270 | if ( !dirpath ) return; | |
271 | ||
272 | GList *gl; | |
273 | foreach_list ( gl, filenames ) { | |
274 | gchar *fn = util_make_absolute_filename ( gl->data, dirpath ); | |
275 | if ( fn ) { | |
276 | g_free ( gl->data ); | |
277 | gl->data = fn; | |
278 | } | |
279 | } | |
280 | } |