1 /* -*- mode: C; c-file-style: "gnu" -*- */ 2 /* xdgmimealias.c: Private file. Datastructure for storing the hierarchy. 3 * 4 * More info can be found at http://www.freedesktop.org/standards/ 5 * 6 * Copyright (C) 2004 Red Hat, Inc. 7 * Copyright (C) 2004 Matthias Clasen <mclasen (at) redhat.com> 8 * 9 * Licensed under the Academic Free License version 2.0 10 * Or under the following terms: 11 * 12 * This library is free software; you can redistribute it and/or 13 * modify it under the terms of the GNU Lesser General Public 14 * License as published by the Free Software Foundation; either 15 * version 2 of the License, or (at your option) any later version. 16 * 17 * This library is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * Lesser General Public License for more details. 21 * 22 * You should have received a copy of the GNU Lesser General Public 23 * License along with this library; if not, write to the 24 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 25 * Boston, MA 02111-1307, USA. 26 */ 27 28 #ifdef HAVE_CONFIG_H 29 #include "config.h" 30 #endif 31 32 #include "xdgmimeparent.h" 33 #include "xdgmimeint.h" 34 #include <stdlib.h> 35 #include <stdio.h> 36 #include <assert.h> 37 #include <string.h> 38 #include <fnmatch.h> 39 40 #ifndef FALSE 41 #define FALSE (0) 42 #endif 43 44 #ifndef TRUE 45 #define TRUE (!FALSE) 46 #endif 47 48 typedef struct XdgMimeParents XdgMimeParents; 49 50 struct XdgMimeParents 51 { 52 char *mime; 53 char **parents; 54 int n_parents; 55 }; 56 57 struct XdgParentList 58 { 59 struct XdgMimeParents *parents; 60 int n_mimes; 61 }; 62 63 XdgParentList * 64 _xdg_mime_parent_list_new (void) 65 { 66 XdgParentList *list; 67 68 list = malloc (sizeof (XdgParentList)); 69 70 list->parents = NULL; 71 list->n_mimes = 0; 72 73 return list; 74 } 75 76 void 77 _xdg_mime_parent_list_free (XdgParentList *list) 78 { 79 int i; 80 char **p; 81 82 if (list->parents) 83 { 84 for (i = 0; i < list->n_mimes; i++) 85 { 86 for (p = list->parents[i].parents; *p; p++) 87 free (*p); 88 89 free (list->parents[i].parents); 90 free (list->parents[i].mime); 91 } 92 free (list->parents); 93 } 94 free (list); 95 } 96 97 static int 98 parent_entry_cmp (const void *v1, const void *v2) 99 { 100 return strcmp (((XdgMimeParents *)v1)->mime, ((XdgMimeParents *)v2)->mime); 101 } 102 103 const char ** 104 _xdg_mime_parent_list_lookup (XdgParentList *list, 105 const char *mime) 106 { 107 XdgMimeParents *entry; 108 XdgMimeParents key; 109 110 if (list->n_mimes > 0) 111 { 112 key.mime = (char *)mime; 113 key.parents = NULL; 114 115 entry = bsearch (&key, list->parents, list->n_mimes, 116 sizeof (XdgMimeParents), &parent_entry_cmp); 117 if (entry) 118 return (const char **)entry->parents; 119 } 120 121 return NULL; 122 } 123 124 void 125 _xdg_mime_parent_read_from_file (XdgParentList *list, 126 const char *file_name) 127 { 128 FILE *file; 129 char line[255]; 130 int i, alloc; 131 XdgMimeParents *entry; 132 133 file = fopen (file_name, "r"); 134 135 if (file == NULL) 136 return; 137 138 /* FIXME: Not UTF-8 safe. Doesn't work if lines are greater than 255 chars. 139 * Blah */ 140 alloc = list->n_mimes + 16; 141 list->parents = realloc (list->parents, alloc * sizeof (XdgMimeParents)); 142 while (fgets (line, 255, file) != NULL) 143 { 144 char *sep; 145 if (line[0] == '#') 146 continue; 147 148 sep = strchr (line, ' '); 149 if (sep == NULL) 150 continue; 151 *(sep++) = '\000'; 152 sep[strlen (sep) -1] = '\000'; 153 entry = NULL; 154 for (i = 0; i < list->n_mimes; i++) 155 { 156 if (strcmp (list->parents[i].mime, line) == 0) 157 { 158 entry = &(list->parents[i]); 159 break; 160 } 161 } 162 163 if (!entry) 164 { 165 if (list->n_mimes == alloc) 166 { 167 alloc <<= 1; 168 list->parents = realloc (list->parents, 169 alloc * sizeof (XdgMimeParents)); 170 } 171 list->parents[list->n_mimes].mime = strdup (line); 172 list->parents[list->n_mimes].parents = NULL; 173 entry = &(list->parents[list->n_mimes]); 174 list->n_mimes++; 175 } 176 177 if (!entry->parents) 178 { 179 entry->n_parents = 1; 180 entry->parents = malloc ((entry->n_parents + 1) * sizeof (char *)); 181 } 182 else 183 { 184 entry->n_parents += 1; 185 entry->parents = realloc (entry->parents, 186 (entry->n_parents + 2) * sizeof (char *)); 187 } 188 entry->parents[entry->n_parents - 1] = strdup (sep); 189 entry->parents[entry->n_parents] = NULL; 190 } 191 192 list->parents = realloc (list->parents, 193 list->n_mimes * sizeof (XdgMimeParents)); 194 195 fclose (file); 196 197 if (list->n_mimes > 1) 198 qsort (list->parents, list->n_mimes, 199 sizeof (XdgMimeParents), &parent_entry_cmp); 200 } 201 202 203 void 204 _xdg_mime_parent_list_dump (XdgParentList *list) 205 { 206 int i; 207 char **p; 208 209 if (list->parents) 210 { 211 for (i = 0; i < list->n_mimes; i++) 212 { 213 for (p = list->parents[i].parents; *p; p++) 214 printf ("%s %s\n", list->parents[i].mime, *p); 215 } 216 } 217 } 218 219 220
