parser/parse.c (raw)
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/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*- parse.c for the Openbox window manager Copyright (c) 2003 Ben Jansens This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. See the COPYING file for a copy of the GNU General Public License. */ #include "parse.h" #include <glib.h> #include <string.h> #include <errno.h> #include <sys/stat.h> #include <sys/types.h> static gboolean xdg_start; static gchar *xdg_config_home_path; static gchar *xdg_data_home_path; static GSList *xdg_config_dir_paths; static GSList *xdg_data_dir_paths; struct Callback { gchar *tag; ParseCallback func; gpointer data; }; struct _ObParseInst { GHashTable *callbacks; }; static void destfunc(struct Callback *c) { g_free(c->tag); g_free(c); } ObParseInst* parse_startup() { ObParseInst *i = g_new(ObParseInst, 1); i->callbacks = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, (GDestroyNotify)destfunc); return i; } void parse_shutdown(ObParseInst *i) { if (i) { g_hash_table_destroy(i->callbacks); g_free(i); } } void parse_register(ObParseInst *i, const gchar *tag, ParseCallback func, gpointer data) { struct Callback *c; if ((c = g_hash_table_lookup(i->callbacks, tag))) { g_warning("tag '%s' already registered", tag); return; } c = g_new(struct Callback, 1); c->tag = g_strdup(tag); c->func = func; c->data = data; g_hash_table_insert(i->callbacks, c->tag, c); } gboolean parse_load_rc(xmlDocPtr *doc, xmlNodePtr *root) { GSList *it; gchar *path; gboolean r = FALSE; for (it = xdg_config_dir_paths; !r && it; it = g_slist_next(it)) { path = g_build_filename(it->data, "openbox", "rc.xml", NULL); r = parse_load(path, "openbox_config", doc, root); g_free(path); } if (!r) g_warning("unable to find a valid config file, using defaults"); return r; } gboolean parse_load_menu(const gchar *file, xmlDocPtr *doc, xmlNodePtr *root) { GSList *it; gchar *path; gboolean r = FALSE; if (file[0] == '/') { r = parse_load(file, "openbox_menu", doc, root); } else { for (it = xdg_config_dir_paths; !r && it; it = g_slist_next(it)) { path = g_build_filename(it->data, "openbox", file, NULL); r = parse_load(path, "openbox_menu", doc, root); g_free(path); } } if (!r) g_warning("unable to find a valid menu file '%s'", file); return r; } gboolean parse_load(const gchar *path, const gchar *rootname, xmlDocPtr *doc, xmlNodePtr *root) { if ((*doc = xmlParseFile(path))) { *root = xmlDocGetRootElement(*doc); if (!*root) { xmlFreeDoc(*doc); *doc = NULL; g_warning("%s is an empty document", path); } else { if (xmlStrcasecmp((*root)->name, (const xmlChar*)rootname)) { xmlFreeDoc(*doc); *doc = NULL; g_warning("document %s is of wrong type. root node is " "not '%s'", path, rootname); } } } if (!*doc) return FALSE; return TRUE; } gboolean parse_load_mem(gpointer data, guint len, const gchar *rootname, xmlDocPtr *doc, xmlNodePtr *root) { if ((*doc = xmlParseMemory(data, len))) { *root = xmlDocGetRootElement(*doc); if (!*root) { xmlFreeDoc(*doc); *doc = NULL; g_warning("Given memory is an empty document"); } else { if (xmlStrcasecmp((*root)->name, (const xmlChar*)rootname)) { xmlFreeDoc(*doc); *doc = NULL; g_warning("document in given memory is of wrong type. root " "node is not '%s'", rootname); } } } if (!*doc) return FALSE; return TRUE; } void parse_close(xmlDocPtr doc) { xmlFreeDoc(doc); } void parse_tree(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node) { while (node) { struct Callback *c = g_hash_table_lookup(i->callbacks, node->name); if (c) c->func(i, doc, node, c->data); node = node->next; } } gchar *parse_string(xmlDocPtr doc, xmlNodePtr node) { xmlChar *c = xmlNodeListGetString(doc, node->children, TRUE); gchar *s = g_strdup(c ? (gchar*)c : ""); xmlFree(c); return s; } gint parse_int(xmlDocPtr doc, xmlNodePtr node) { xmlChar *c = xmlNodeListGetString(doc, node->children, TRUE); gint i = atoi((gchar*)c); xmlFree(c); return i; } gboolean parse_bool(xmlDocPtr doc, xmlNodePtr node) { xmlChar *c = xmlNodeListGetString(doc, node->children, TRUE); gboolean b = FALSE; if (!xmlStrcasecmp(c, (const xmlChar*) "true")) b = TRUE; else if (!xmlStrcasecmp(c, (const xmlChar*) "yes")) b = TRUE; else if (!xmlStrcasecmp(c, (const xmlChar*) "on")) b = TRUE; xmlFree(c); return b; } gboolean parse_contains(const gchar *val, xmlDocPtr doc, xmlNodePtr node) { xmlChar *c = xmlNodeListGetString(doc, node->children, TRUE); gboolean r; r = !xmlStrcasecmp(c, (const xmlChar*) val); xmlFree(c); return r; } xmlNodePtr parse_find_node(const gchar *tag, xmlNodePtr node) { while (node) { if (!xmlStrcasecmp(node->name, (const xmlChar*) tag)) return node; node = node->next; } return NULL; } gboolean parse_attr_int(const gchar *name, xmlNodePtr node, gint *value) { xmlChar *c = xmlGetProp(node, (const xmlChar*) name); gboolean r = FALSE; if (c) { *value = atoi((gchar*)c); r = TRUE; } xmlFree(c); return r; } gboolean parse_attr_string(const gchar *name, xmlNodePtr node, gchar **value) { xmlChar *c = xmlGetProp(node, (const xmlChar*) name); gboolean r = FALSE; if (c) { *value = g_strdup((gchar*)c); r = TRUE; } xmlFree(c); return r; } gboolean parse_attr_contains(const gchar *val, xmlNodePtr node, const gchar *name) { xmlChar *c = xmlGetProp(node, (const xmlChar*) name); gboolean r; r = !xmlStrcasecmp(c, (const xmlChar*) val); xmlFree(c); return r; } static gint slist_path_cmp(const gchar *a, const gchar *b) { return strcmp(a, b); } typedef GSList* (*GSListFunc) (gpointer list, gconstpointer data); static GSList* slist_path_add(GSList *list, gpointer data, GSListFunc func) { g_assert(func); if (!data) return list; if (!g_slist_find_custom(list, data, (GCompareFunc) slist_path_cmp)) list = func(list, data); return list; } static GSList* split_paths(const gchar *paths) { GSList *list = NULL; gchar **spl, **it; if (!paths) return NULL; spl = g_strsplit(paths, ":", -1); for (it = spl; *it; ++it) list = slist_path_add(list, *it, (GSListFunc) g_slist_append); g_free(spl); return list; } void parse_paths_startup() { const gchar *path; if (xdg_start) return; xdg_start = TRUE; path = g_getenv("XDG_CONFIG_HOME"); if (path && path[0] != '\0') /* not unset or empty */ xdg_config_home_path = g_build_filename(path, NULL); else xdg_config_home_path = g_build_filename(g_get_home_dir(), ".config", NULL); path = g_getenv("XDG_DATA_HOME"); if (path && path[0] != '\0') /* not unset or empty */ xdg_data_home_path = g_build_filename(path, NULL); else xdg_data_home_path = g_build_filename(g_get_home_dir(), ".local", "share", NULL); path = g_getenv("XDG_CONFIG_DIRS"); if (path && path[0] != '\0') /* not unset or empty */ xdg_config_dir_paths = split_paths(path); else { xdg_config_dir_paths = slist_path_add(xdg_config_dir_paths, g_build_filename (G_DIR_SEPARATOR_S, "etc", "xdg", NULL), (GSListFunc) g_slist_append); xdg_config_dir_paths = slist_path_add(xdg_config_dir_paths, g_strdup(CONFIGDIR), (GSListFunc) g_slist_append); } xdg_config_dir_paths = slist_path_add(xdg_config_dir_paths, xdg_config_home_path, (GSListFunc) g_slist_prepend); path = g_getenv("XDG_DATA_DIRS"); if (path && path[0] != '\0') /* not unset or empty */ xdg_data_dir_paths = split_paths(path); else { xdg_data_dir_paths = slist_path_add(xdg_data_dir_paths, g_build_filename (G_DIR_SEPARATOR_S, "usr", "local", "share", NULL), (GSListFunc) g_slist_append); xdg_data_dir_paths = slist_path_add(xdg_data_dir_paths, g_build_filename (G_DIR_SEPARATOR_S, "usr", "share", NULL), (GSListFunc) g_slist_append); xdg_data_dir_paths = slist_path_add(xdg_data_dir_paths, g_strdup(DATADIR), (GSListFunc) g_slist_append); } xdg_data_dir_paths = slist_path_add(xdg_data_dir_paths, xdg_data_home_path, (GSListFunc) g_slist_prepend); } void parse_paths_shutdown() { GSList *it; if (!xdg_start) return; xdg_start = FALSE; for (it = xdg_config_dir_paths; it; it = g_slist_next(it)) g_free(it->data); g_slist_free(xdg_config_dir_paths); xdg_config_dir_paths = NULL; for (it = xdg_data_dir_paths; it; it = g_slist_next(it)) g_free(it->data); g_slist_free(xdg_data_dir_paths); xdg_data_dir_paths = NULL; } gchar *parse_expand_tilde(const gchar *f) { gchar **spl; gchar *ret; if (!f) return NULL; spl = g_strsplit(f, "~", 0); ret = g_strjoinv(g_get_home_dir(), spl); g_strfreev(spl); return ret; } gboolean parse_mkdir(const gchar *path, gint mode) { gboolean ret = TRUE; g_return_val_if_fail(path != NULL, FALSE); g_return_val_if_fail(path[0] != '\0', FALSE); if (!g_file_test(path, G_FILE_TEST_IS_DIR)) if (mkdir(path, mode) == -1) ret = FALSE; return ret; } gboolean parse_mkdir_path(const gchar *path, gint mode) { gboolean ret = TRUE; g_return_val_if_fail(path != NULL, FALSE); g_return_val_if_fail(path[0] == '/', FALSE); if (!g_file_test(path, G_FILE_TEST_IS_DIR)) { gchar *c, *e; c = g_strdup(path); e = c; while ((e = strchr(e + 1, '/'))) { *e = '\0'; if (!(ret = parse_mkdir(c, mode))) goto parse_mkdir_path_end; *e = '/'; } ret = parse_mkdir(c, mode); parse_mkdir_path_end: g_free(c); } return ret; } const gchar* parse_xdg_config_home_path() { return xdg_config_home_path; } const gchar* parse_xdg_data_home_path() { return xdg_data_home_path; } GSList* parse_xdg_config_dir_paths() { return xdg_config_dir_paths; } GSList* parse_xdg_data_dir_paths() { return xdg_data_dir_paths; } |