Dogcows Code - chaz/openbox/blob - parser/parse.c

   1 /* -*- indent-tabs-mode: t; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    parse.c for the Openbox window manager
   4    Copyright (c) 2003        Ben Jansens
   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
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  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    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 #include "parse.h"
  20 #include <glib.h>
  21 #include <string.h>
  22 #include <sys/stat.h>
  23 #include <sys/types.h>
  24
  25 static gboolean xdg_start;
  26 static gchar   *xdg_config_home_path;
  27 static gchar   *xdg_data_home_path;
  28 static GSList  *xdg_config_dir_paths;
  29 static GSList  *xdg_data_dir_paths;
  30
  31 struct Callback {
  32     char *tag;
  33     ParseCallback func;
  34     void *data;
  35 };
  36
  37 struct _ObParseInst {
  38     GHashTable *callbacks;
  39 };
  40
  41 static void destfunc(struct Callback *c)
  42 {
  43     g_free(c->tag);
  44     g_free(c);
  45 }
  46
  47 ObParseInst* parse_startup()
  48 {
  49     ObParseInst *i = g_new(ObParseInst, 1);
  50     i->callbacks = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
  51                                          (GDestroyNotify)destfunc);
  52     return i;
  53 }
  54
  55 void parse_shutdown(ObParseInst *i)
  56 {
  57     if (i) {
  58         g_hash_table_destroy(i->callbacks);
  59         g_free(i);
  60     }
  61 }
  62
  63 void parse_register(ObParseInst *i, const char *tag,
  64                     ParseCallback func, void *data)
  65 {
  66     struct Callback *c;
  67
  68     if ((c = g_hash_table_lookup(i->callbacks, tag))) {
  69         g_warning("tag '%s' already registered", tag);
  70         return;
  71     }
  72
  73     c = g_new(struct Callback, 1);
  74     c->tag = g_strdup(tag);
  75     c->func = func;
  76     c->data = data;
  77     g_hash_table_insert(i->callbacks, c->tag, c);
  78 }
  79
  80 gboolean parse_load_rc(xmlDocPtr *doc, xmlNodePtr *root)
  81 {
  82     GSList *it;
  83     gchar *path;
  84     gboolean r = FALSE;
  85
  86     for (it = xdg_config_dir_paths; !r && it; it = g_slist_next(it)) {
  87         path = g_build_filename(it->data, "openbox", "rc.xml", NULL);
  88         r = parse_load(path, "openbox_config", doc, root);
  89         g_free(path);
  90     }
  91     if (!r)
  92         g_warning("unable to find a valid config file, using defaults");
  93     return r;
  94 }
  95
  96 gboolean parse_load_menu(const gchar *file, xmlDocPtr *doc, xmlNodePtr *root)
  97 {
  98     GSList *it;
  99     gchar *path;
 100     gboolean r = FALSE;
 101
 102     if (file[0] == '/') {
 103         r = parse_load(file, "openbox_menu", doc, root);
 104     } else {
 105         for (it = xdg_config_dir_paths; !r && it; it = g_slist_next(it)) {
 106             path = g_build_filename(it->data, "openbox", file, NULL);
 107             r = parse_load(path, "openbox_menu", doc, root);
 108             g_free(path);
 109         }
 110     }
 111     if (!r)
 112         g_warning("unable to find a valid menu file '%s'", file);
 113     return r;
 114 }
 115
 116 gboolean parse_load(const char *path, const char *rootname,
 117                     xmlDocPtr *doc, xmlNodePtr *root)
 118 {
 119     if ((*doc = xmlParseFile(path))) {
 120         *root = xmlDocGetRootElement(*doc);
 121         if (!*root) {
 122             xmlFreeDoc(*doc);
 123             *doc = NULL;
 124             g_warning("%s is an empty document", path);
 125         } else {
 126             if (xmlStrcasecmp((*root)->name, (const xmlChar*)rootname)) {
 127                 xmlFreeDoc(*doc);
 128                 *doc = NULL;
 129                 g_warning("document %s is of wrong type. root node is "
 130                           "not '%s'", path, rootname);
 131             }
 132         }
 133     }
 134     if (!*doc)
 135         return FALSE;
 136     return TRUE;
 137 }
 138
 139 gboolean parse_load_mem(gpointer data, guint len, const char *rootname,
 140                         xmlDocPtr *doc, xmlNodePtr *root)
 141 {
 142     if ((*doc = xmlParseMemory(data, len))) {
 143         *root = xmlDocGetRootElement(*doc);
 144         if (!*root) {
 145             xmlFreeDoc(*doc);
 146             *doc = NULL;
 147             g_warning("Given memory is an empty document");
 148         } else {
 149             if (xmlStrcasecmp((*root)->name, (const xmlChar*)rootname)) {
 150                 xmlFreeDoc(*doc);
 151                 *doc = NULL;
 152                 g_warning("document in given memory is of wrong type. root "
 153                           "node is not '%s'", rootname);
 154             }
 155         }
 156     }
 157     if (!*doc)
 158         return FALSE;
 159     return TRUE;
 160 }
 161
 162 void parse_close(xmlDocPtr doc)
 163 {
 164     xmlFree(doc);
 165 }
 166
 167 void parse_tree(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node)
 168 {
 169     while (node) {
 170         struct Callback *c = g_hash_table_lookup(i->callbacks, node->name);
 171
 172         if (c)
 173             c->func(i, doc, node, c->data);
 174
 175         node = node->next;
 176     }
 177 }
 178
 179 char *parse_string(xmlDocPtr doc, xmlNodePtr node)
 180 {
 181     xmlChar *c = xmlNodeListGetString(doc, node->children, TRUE);
 182     char *s = g_strdup(c ? (char*)c : "");
 183     xmlFree(c);
 184     return s;
 185 }
 186
 187 int parse_int(xmlDocPtr doc, xmlNodePtr node)
 188 {
 189     xmlChar *c = xmlNodeListGetString(doc, node->children, TRUE);
 190     int i = atoi((char*)c);
 191     xmlFree(c);
 192     return i;
 193 }
 194
 195 gboolean parse_bool(xmlDocPtr doc, xmlNodePtr node)
 196 {
 197     xmlChar *c = xmlNodeListGetString(doc, node->children, TRUE);
 198     gboolean b = FALSE;
 199     if (!xmlStrcasecmp(c, (const xmlChar*) "true"))
 200         b = TRUE;
 201     else if (!xmlStrcasecmp(c, (const xmlChar*) "yes"))
 202         b = TRUE;
 203     else if (!xmlStrcasecmp(c, (const xmlChar*) "on"))
 204         b = TRUE;
 205     xmlFree(c);
 206     return b;
 207 }
 208
 209 gboolean parse_contains(const char *val, xmlDocPtr doc, xmlNodePtr node)
 210 {
 211     xmlChar *c = xmlNodeListGetString(doc, node->children, TRUE);
 212     gboolean r;
 213     r = !xmlStrcasecmp(c, (const xmlChar*) val);
 214     xmlFree(c);
 215     return r;
 216 }
 217
 218 xmlNodePtr parse_find_node(const char *tag, xmlNodePtr node)
 219 {
 220     while (node) {
 221         if (!xmlStrcasecmp(node->name, (const xmlChar*) tag))
 222             return node;
 223         node = node->next;
 224     }
 225     return NULL;
 226 }
 227
 228 gboolean parse_attr_int(const char *name, xmlNodePtr node, int *value)
 229 {
 230     xmlChar *c = xmlGetProp(node, (const xmlChar*) name);
 231     gboolean r = FALSE;
 232     if (c) {
 233         *value = atoi((char*)c);
 234         r = TRUE;
 235     }
 236     xmlFree(c);
 237     return r;
 238 }
 239
 240 gboolean parse_attr_string(const char *name, xmlNodePtr node, char **value)
 241 {
 242     xmlChar *c = xmlGetProp(node, (const xmlChar*) name);
 243     gboolean r = FALSE;
 244     if (c) {
 245         *value = g_strdup((char*)c);
 246         r = TRUE;
 247     }
 248     xmlFree(c);
 249     return r;
 250 }
 251
 252 gboolean parse_attr_contains(const char *val, xmlNodePtr node,
 253                              const char *name)
 254 {
 255     xmlChar *c = xmlGetProp(node, (const xmlChar*) name);
 256     gboolean r;
 257     r = !xmlStrcasecmp(c, (const xmlChar*) val);
 258     xmlFree(c);
 259     return r;
 260 }
 261
 262 static GSList* split_paths(const gchar *paths)
 263 {
 264     GSList *list = NULL;
 265     gchar *c, *e, *s;
 266
 267     c = g_strdup(paths);
 268     s = c;
 269     e = c - 1;
 270     g_message("paths %s", paths);
 271     while ((e = strchr(e + 1, ':'))) {
 272         *e = '\0';
 273         g_message("s %s", s);
 274         if (s[0] != '\0')
 275             list = g_slist_append(list, g_strdup(s));
 276         s = e + 1;
 277     }
 278     if (s[0] != '\0')
 279         list = g_slist_append(list, g_strdup(s));
 280     g_free(c);
 281     return list;
 282 }
 283
 284 void parse_paths_startup()
 285 {
 286     gchar *path;
 287
 288     if (xdg_start)
 289         return;
 290     xdg_start = TRUE;
 291
 292     path = getenv("XDG_CONFIG_HOME");
 293     if (path && path[0] != '\0') /* not unset or empty */
 294         xdg_config_home_path = g_build_filename(path, NULL);
 295     else
 296         xdg_config_home_path = g_build_filename(g_get_home_dir(), ".config",
 297                                                 NULL);
 298
 299     path = getenv("XDG_DATA_HOME");
 300     if (path && path[0] != '\0') /* not unset or empty */
 301         xdg_data_home_path = g_build_filename(path, NULL);
 302     else
 303         xdg_data_home_path = g_build_filename(g_get_home_dir(), ".local",
 304                                               "share", NULL);
 305
 306     path = getenv("XDG_CONFIG_DIRS");
 307     if (path && path[0] != '\0') /* not unset or empty */
 308         xdg_config_dir_paths = split_paths(path);
 309     else {
 310         xdg_config_dir_paths = g_slist_append(xdg_config_dir_paths,
 311                                               g_build_filename
 312                                               (G_DIR_SEPARATOR_S,
 313                                                "etc", "xdg", NULL));
 314         xdg_config_dir_paths = g_slist_append(xdg_config_dir_paths,
 315                                               g_strdup(CONFIGDIR));
 316     }
 317     xdg_config_dir_paths = g_slist_prepend(xdg_config_dir_paths,
 318                                            xdg_config_home_path);
 319
 320     path = getenv("XDG_DATA_DIRS");
 321     if (path && path[0] != '\0') /* not unset or empty */
 322         xdg_data_dir_paths = split_paths(path);
 323     else {
 324         xdg_data_dir_paths = g_slist_append(xdg_data_dir_paths,
 325                                             g_build_filename
 326                                             (G_DIR_SEPARATOR_S,
 327                                              "usr", "local", "share", NULL));
 328         xdg_data_dir_paths = g_slist_append(xdg_data_dir_paths,
 329                                             g_build_filename
 330                                             (G_DIR_SEPARATOR_S,
 331                                              "usr", "share", NULL));
 332         xdg_config_dir_paths = g_slist_append(xdg_config_dir_paths,
 333                                               g_strdup(DATADIR));
 334     }
 335     xdg_data_dir_paths = g_slist_prepend(xdg_data_dir_paths,
 336                                          xdg_data_home_path);
 337 }
 338
 339 void parse_paths_shutdown()
 340 {
 341     GSList *it;
 342
 343     if (!xdg_start)
 344         return;
 345     xdg_start = FALSE;
 346
 347     for (it = xdg_config_dir_paths; it; it = g_slist_next(it))
 348         g_free(it->data);
 349     g_slist_free(xdg_config_dir_paths);
 350     xdg_config_dir_paths = NULL;
 351 }
 352
 353 gchar *parse_expand_tilde(const gchar *f)
 354 {
 355     gchar **spl;
 356     gchar *ret;
 357
 358     if (!f)
 359         return NULL;
 360     spl = g_strsplit(f, "~", 0);
 361     ret = g_strjoinv(g_get_home_dir(), spl);
 362     g_strfreev(spl);
 363     return ret;
 364 }
 365
 366 void parse_mkdir_path(const gchar *path, gint mode)
 367 {
 368     gchar *c, *e;
 369
 370     g_assert(path[0] == '/');
 371
 372     c = g_strdup(path);
 373     e = c;
 374     while ((e = strchr(e + 1, '/'))) {
 375         *e = '\0';
 376         mkdir(c, mode);
 377         *e = '/';
 378     }
 379     mkdir(c, mode);
 380     g_free(c);
 381 }
 382
 383 const gchar* parse_xdg_config_home_path()
 384 {
 385     return xdg_config_home_path;
 386 }
 387
 388 const gchar* parse_xdg_data_home_path()
 389 {
 390     return xdg_data_home_path;
 391 }
 392
 393 GSList* parse_xdg_config_dir_paths()
 394 {
 395     return xdg_config_dir_paths;
 396 }
 397
 398 GSList* parse_xdg_data_dir_paths()
 399 {
 400     return xdg_data_dir_paths;
 401 }