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

   1 /* -*- indent-tabs-mode: nil; 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     gchar *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 gchar *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 gchar *path, const gchar *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 gchar *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     xmlFreeDoc(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 gchar *parse_string(xmlDocPtr doc, xmlNodePtr node)
 180 {
 181     xmlChar *c = xmlNodeListGetString(doc, node->children, TRUE);
 182     gchar *s = g_strdup(c ? (gchar*)c : "");
 183     xmlFree(c);
 184     return s;
 185 }
 186
 187 gint parse_int(xmlDocPtr doc, xmlNodePtr node)
 188 {
 189     xmlChar *c = xmlNodeListGetString(doc, node->children, TRUE);
 190     gint i = atoi((gchar*)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 gchar *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 gchar *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 gchar *name, xmlNodePtr node, gint *value)
 229 {
 230     xmlChar *c = xmlGetProp(node, (const xmlChar*) name);
 231     gboolean r = FALSE;
 232     if (c) {
 233         *value = atoi((gchar*)c);
 234         r = TRUE;
 235     }
 236     xmlFree(c);
 237     return r;
 238 }
 239
 240 gboolean parse_attr_string(const gchar *name, xmlNodePtr node, gchar **value)
 241 {
 242     xmlChar *c = xmlGetProp(node, (const xmlChar*) name);
 243     gboolean r = FALSE;
 244     if (c) {
 245         *value = g_strdup((gchar*)c);
 246         r = TRUE;
 247     }
 248     xmlFree(c);
 249     return r;
 250 }
 251
 252 gboolean parse_attr_contains(const gchar *val, xmlNodePtr node,
 253                              const gchar *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 **spl, **it;
 266
 267     if (!paths)
 268         return NULL;
 269     spl = g_strsplit(paths, ":", -1);
 270     for (it = spl; *it; ++it)
 271         list = g_slist_append(list, *it);
 272     g_free(spl);
 273     return list;
 274 }
 275
 276 void parse_paths_startup()
 277 {
 278     gchar *path;
 279
 280     if (xdg_start)
 281         return;
 282     xdg_start = TRUE;
 283
 284     path = getenv("XDG_CONFIG_HOME");
 285     if (path && path[0] != '\0') /* not unset or empty */
 286         xdg_config_home_path = g_build_filename(path, NULL);
 287     else
 288         xdg_config_home_path = g_build_filename(g_get_home_dir(), ".config",
 289                                                 NULL);
 290
 291     path = getenv("XDG_DATA_HOME");
 292     if (path && path[0] != '\0') /* not unset or empty */
 293         xdg_data_home_path = g_build_filename(path, NULL);
 294     else
 295         xdg_data_home_path = g_build_filename(g_get_home_dir(), ".local",
 296                                               "share", NULL);
 297
 298     path = getenv("XDG_CONFIG_DIRS");
 299     if (path && path[0] != '\0') /* not unset or empty */
 300         xdg_config_dir_paths = split_paths(path);
 301     else {
 302         xdg_config_dir_paths = g_slist_append(xdg_config_dir_paths,
 303                                               g_build_filename
 304                                               (G_DIR_SEPARATOR_S,
 305                                                "etc", "xdg", NULL));
 306         xdg_config_dir_paths = g_slist_append(xdg_config_dir_paths,
 307                                               g_strdup(CONFIGDIR));
 308     }
 309     xdg_config_dir_paths = g_slist_prepend(xdg_config_dir_paths,
 310                                            xdg_config_home_path);
 311
 312     path = getenv("XDG_DATA_DIRS");
 313     if (path && path[0] != '\0') /* not unset or empty */
 314         xdg_data_dir_paths = split_paths(path);
 315     else {
 316         xdg_data_dir_paths = g_slist_append(xdg_data_dir_paths,
 317                                             g_build_filename
 318                                             (G_DIR_SEPARATOR_S,
 319                                              "usr", "local", "share", NULL));
 320         xdg_data_dir_paths = g_slist_append(xdg_data_dir_paths,
 321                                             g_build_filename
 322                                             (G_DIR_SEPARATOR_S,
 323                                              "usr", "share", NULL));
 324         xdg_data_dir_paths = g_slist_append(xdg_data_dir_paths,
 325                                             g_strdup(DATADIR));
 326     }
 327     xdg_data_dir_paths = g_slist_prepend(xdg_data_dir_paths,
 328                                          xdg_data_home_path);
 329 }
 330
 331 void parse_paths_shutdown()
 332 {
 333     GSList *it;
 334
 335     if (!xdg_start)
 336         return;
 337     xdg_start = FALSE;
 338
 339     for (it = xdg_config_dir_paths; it; it = g_slist_next(it))
 340         g_free(it->data);
 341     g_slist_free(xdg_config_dir_paths);
 342     xdg_config_dir_paths = NULL;
 343     for (it = xdg_data_dir_paths; it; it = g_slist_next(it))
 344         g_free(it->data);
 345     g_slist_free(xdg_data_dir_paths);
 346     xdg_data_dir_paths = NULL;
 347 }
 348
 349 gchar *parse_expand_tilde(const gchar *f)
 350 {
 351     gchar **spl;
 352     gchar *ret;
 353
 354     if (!f)
 355         return NULL;
 356     spl = g_strsplit(f, "~", 0);
 357     ret = g_strjoinv(g_get_home_dir(), spl);
 358     g_strfreev(spl);
 359     return ret;
 360 }
 361
 362 void parse_mkdir_path(const gchar *path, gint mode)
 363 {
 364     gchar *c, *e;
 365
 366     g_assert(path[0] == '/');
 367
 368     c = g_strdup(path);
 369     e = c;
 370     while ((e = strchr(e + 1, '/'))) {
 371         *e = '\0';
 372         mkdir(c, mode);
 373         *e = '/';
 374     }
 375     mkdir(c, mode);
 376     g_free(c);
 377 }
 378
 379 const gchar* parse_xdg_config_home_path()
 380 {
 381     return xdg_config_home_path;
 382 }
 383
 384 const gchar* parse_xdg_data_home_path()
 385 {
 386     return xdg_data_home_path;
 387 }
 388
 389 GSList* parse_xdg_config_dir_paths()
 390 {
 391     return xdg_config_dir_paths;
 392 }
 393
 394 GSList* parse_xdg_data_dir_paths()
 395 {
 396     return xdg_data_dir_paths;
 397 }