From 0667bbc3e2fbd3fa39206e843560735524840d35 Mon Sep 17 00:00:00 2001 From: Dana Jansens Date: Thu, 26 Jul 2007 23:48:53 -0400 Subject: [PATCH] add parsing to libobt with a new API! (it is not completely changed/fixedup yet) --- Makefile.am | 6 +- obt/parse.c | 574 ++++++++++++++++++++++++++++++++++++++++++++++++++++ obt/parse.h | 99 +++++++++ 3 files changed, 678 insertions(+), 1 deletion(-) create mode 100644 obt/parse.c create mode 100644 obt/parse.h diff --git a/Makefile.am b/Makefile.am index bf6c8c01..483f2d42 100644 --- a/Makefile.am +++ b/Makefile.am @@ -119,6 +119,7 @@ obt_libobt_la_CPPFLAGS = \ $(XSHAPE_CFLAGS) \ $(XSYNC_CFLAGS) \ $(GLIB_CFLAGS) \ + $(XML_CFLAGS) \ -DG_LOG_DOMAIN=\"Obt\" \ -DLOCALEDIR=\"$(localedir)\" \ -DDATADIR=\"$(datadir)\" \ @@ -131,7 +132,8 @@ obt_libobt_la_LIBADD = \ $(XRANDR_LIBS) \ $(XSHAPE_LIBS) \ $(XSYNC_LIBS) \ - $(GLIB_LIBS) + $(GLIB_LIBS) \ + $(XML_LIBS) obt_libobt_la_SOURCES = \ obt/display.h \ obt/display.c \ @@ -140,6 +142,8 @@ obt_libobt_la_SOURCES = \ obt/keyboard.c \ obt/mainloop.h \ obt/mainloop.c \ + obt/parse.h \ + obt/parse.c \ obt/prop.h \ obt/prop.c \ obt/util.h diff --git a/obt/parse.c b/obt/parse.c new file mode 100644 index 00000000..68b1b87f --- /dev/null +++ b/obt/parse.c @@ -0,0 +1,574 @@ +/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*- + + obt/parse.c for the Openbox window manager + Copyright (c) 2003-2007 Dana 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 "obt/parse.h" + +#include + +#ifdef HAVE_STRING_H +# include +#endif +#ifdef HAVE_ERRNO_H +# include +#endif +#ifdef HAVE_SYS_STAT_H +# include +#endif +#ifdef HAVE_SYS_TYPES_H +# include +#endif +#ifdef HAVE_UNISTD_H +# include +#endif + +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; + ObtParseCallback func; + gpointer data; +}; + +struct _ObtParseInst { + gint ref; + GHashTable *callbacks; + xmlDocPtr doc; + xmlNodePtr root; + gchar *path; +}; + +static void destfunc(struct Callback *c) +{ + g_free(c->tag); + g_free(c); +} + +ObtParseInst* obt_parse_instance_new() +{ + ObtParseInst *i = g_new(ObtParseInst, 1); + i->ref = 1; + i->callbacks = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, + (GDestroyNotify)destfunc); + i->doc = NULL; + i->root = NULL; + i->path = NULL; + return i; +} + +void obt_parse_instance_ref(ObtParseInst *i) +{ + ++i->ref; +} + +void obt_parse_instance_unref(ObtParseInst *i) +{ + if (i && --i->ref == 0) { + g_hash_table_destroy(i->callbacks); + g_free(i); + } +} + +void parse_register(ObtParseInst *i, const gchar *tag, + ObtParseCallback func, gpointer data) +{ + struct Callback *c; + + if ((c = g_hash_table_lookup(i->callbacks, tag))) { + g_error("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); +} + +static gboolean load_file(ObtParseInst *i, + const gchar *domain, + const gchar *filename, + const gchar *root_node, + GSList *paths) +{ + GSList *it; + gboolean r = FALSE; + + g_assert(i->doc == NULL); /* another doc isn't open already? */ + + for (it = paths; !r && it; it = g_slist_next(it)) { + gchar *path; + struct stat s; + + path = g_build_filename(it->data, domain, filename, NULL); + + if (stat(path, &s) >= 0) { + /* XML_PARSE_BLANKS is needed apparently, or the tree can end up + with extra nodes in it. */ + i->doc = xmlReadFile(path, NULL, (XML_PARSE_NOBLANKS | + XML_PARSE_RECOVER)); + if (i->doc) { + i->root = xmlDocGetRootElement(i->doc); + if (!i->root) { + xmlFreeDoc(i->doc); + i->doc = NULL; + g_message("%s is an empty XML document", path); + } + else if (xmlStrcmp(i->root->name, + (const xmlChar*)root_node)) { + xmlFreeDoc(i->doc); + i->doc = NULL; + i->root = NULL; + g_message("XML document %s is of wrong type. Root " + "node is not '%s'", path, root_node); + } + else { + i->path = g_strdup(path); + r = TRUE; /* ok! */ + } + } + } + + g_free(path); + } + + return r; +} + +gboolean obt_parse_load_config_file(ObtParseInst *i, + const gchar *domain, + const gchar *filename, + const gchar *root_node) +{ + GSList *it, *paths = NULL; + gboolean r; + + for (it = xdg_config_dir_paths; it; it = g_slist_next(it)) + paths = g_slist_append(paths, g_strdup(it->data)); + + r = load_file(i, domain, filename, root_node, paths); + + while (paths) { + g_free(paths->data); + paths = g_slist_delete_link(paths, paths); + } + return r; +} + +gboolean obt_parse_load_data_file(ObtParseInst *i, + const gchar *domain, + const gchar *filename, + const gchar *root_node) +{ + GSList *it, *paths = NULL; + gboolean r; + + for (it = xdg_data_dir_paths; it; it = g_slist_next(it)) + paths = g_slist_append(paths, g_strdup(it->data)); + + r = load_file(i, domain, filename, root_node, paths); + + while (paths) { + g_free(paths->data); + paths = g_slist_delete_link(paths, paths); + } + return r; +} + +gboolean obt_parse_load_theme_file(ObtParseInst *i, + const gchar *theme, + const gchar *domain, + const gchar *filename, + const gchar *root_node) +{ + GSList *it, *paths = NULL; + gboolean r; + + /* use ~/.themes for backwards compatibility */ + paths = g_slist_append + (paths, g_build_filename(g_get_home_dir(), ".themes", theme, NULL)); + + for (it = xdg_data_dir_paths; it; it = g_slist_next(it)) + paths = g_slist_append + (paths, g_build_filename(it->data, "themes", theme, NULL)); + + r = load_file(i, domain, filename, root_node, paths); + + while (paths) { + g_free(paths->data); + paths = g_slist_delete_link(paths, paths); + } + return r; +} + + +gboolean obt_parse_load_mem(ObtParseInst *i, + gpointer data, guint len, const gchar *root_node) +{ + gboolean r = FALSE; + + g_assert(i->doc == NULL); /* another doc isn't open already? */ + + i->doc = xmlParseMemory(data, len); + if (i) { + i->root = xmlDocGetRootElement(i->doc); + if (!i->root) { + xmlFreeDoc(i->doc); + i->doc = NULL; + g_message("Given memory is an empty document"); + } + else if (xmlStrcmp(i->root->name, (const xmlChar*)root_node)) { + xmlFreeDoc(i->doc); + i->doc = NULL; + i->root = NULL; + g_message("XML Document in given memory is of wrong " + "type. Root node is not '%s'\n", root_node); + } + else + r = TRUE; /* ok ! */ + } + return r; +} + +void obt_parse_close(ObtParseInst *i) +{ + if (i && i->doc) { + xmlFreeDoc(i->doc); + g_free(i->path); + i->doc = NULL; + i->root = NULL; + i->path = NULL; + } +} + +void obt_parse_tree(ObtParseInst *i, xmlNodePtr node) +{ + g_assert(i->doc); /* a doc is open? */ + + while (node) { + struct Callback *c = g_hash_table_lookup(i->callbacks, node->name); + if (c) c->func(i, i->doc, node, c->data); + node = node->next; + } +} + +gchar *obt_parse_node_string(xmlNodePtr node) +{ + xmlChar *c = xmlNodeGetContent(node); + gchar *s = g_strdup(c ? (gchar*)c : ""); + xmlFree(c); + return s; +} + +gint obt_parse_node_int(xmlNodePtr node) +{ + xmlChar *c = xmlNodeGetContent(node); + gint i = c ? atoi((gchar*)c) : 0; + xmlFree(c); + return i; +} + +gboolean obt_parse_node_bool(xmlNodePtr node) +{ + xmlChar *c = xmlNodeGetContent(node); + gboolean b = FALSE; + if (c && !xmlStrcasecmp(c, (const xmlChar*) "true")) + b = TRUE; + else if (c && !xmlStrcasecmp(c, (const xmlChar*) "yes")) + b = TRUE; + else if (c && !xmlStrcasecmp(c, (const xmlChar*) "on")) + b = TRUE; + xmlFree(c); + return b; +} + +gboolean obt_parse_node_contains(xmlNodePtr node, const gchar *val) +{ + xmlChar *c = xmlNodeGetContent(node); + gboolean r; + r = !xmlStrcasecmp(c, (const xmlChar*) val); + xmlFree(c); + return r; +} + +xmlNodePtr obt_parse_find_node(xmlNodePtr node, const gchar *tag) +{ + while (node) { + if (!xmlStrcmp(node->name, (const xmlChar*) tag)) + return node; + node = node->next; + } + return NULL; +} + +gboolean obt_parse_attr_bool(xmlNodePtr node, const gchar *name, + gboolean *value) +{ + xmlChar *c = xmlGetProp(node, (const xmlChar*) name); + gboolean r = FALSE; + if (c) { + if (!xmlStrcasecmp(c, (const xmlChar*) "true")) + *value = TRUE, r = TRUE; + else if (!xmlStrcasecmp(c, (const xmlChar*) "yes")) + *value = TRUE, r = TRUE; + else if (!xmlStrcasecmp(c, (const xmlChar*) "on")) + *value = TRUE, r = TRUE; + else if (!xmlStrcasecmp(c, (const xmlChar*) "false")) + *value = FALSE, r = TRUE; + else if (!xmlStrcasecmp(c, (const xmlChar*) "no")) + *value = FALSE, r = TRUE; + else if (!xmlStrcasecmp(c, (const xmlChar*) "off")) + *value = FALSE, r = TRUE; + } + xmlFree(c); + return r; +} + +gboolean obt_parse_attr_int(xmlNodePtr node, const gchar *name, 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 obt_parse_attr_string(xmlNodePtr node, const gchar *name, + 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 obt_parse_attr_contains(xmlNodePtr node, const gchar *name, + const gchar *val) +{ + xmlChar *c = xmlGetProp(node, (const xmlChar*) name); + gboolean r = FALSE; + if (c) + 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); + else + g_free(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_strdup(CONFIGDIR), + (GSListFunc) g_slist_append); + 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(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_strdup(DATADIR), + (GSListFunc) g_slist_append); + 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(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; + g_free(xdg_config_home_path); + xdg_config_home_path = NULL; + g_free(xdg_data_home_path); + xdg_data_home_path = 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; +} diff --git a/obt/parse.h b/obt/parse.h new file mode 100644 index 00000000..09729a5a --- /dev/null +++ b/obt/parse.h @@ -0,0 +1,99 @@ +/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*- + + obt/parse.h for the Openbox window manager + Copyright (c) 2003-2007 Dana 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. +*/ + +#ifndef __obt_parse_h +#define __obt_parse_h + +#include "version.h" + +#include +#include + +G_BEGIN_DECLS + +typedef struct _ObtParseInst ObtParseInst; + +typedef void (*ObtParseCallback)(ObtParseInst *i, xmlDocPtr doc, + xmlNodePtr node, gpointer data); + +ObtParseInst* obt_parse_instance_new(); +void obt_parse_instance_ref(ObtParseInst *inst); +void obt_parse_instance_unref(ObtParseInst *inst); + +gboolean obt_parse_load_config_file(ObtParseInst *inst, + const gchar *domain, + const gchar *filename, + const gchar *root_node); +gboolean obt_parse_load_data_file(ObtParseInst *inst, + const gchar *domain, + const gchar *filename, + const gchar *root_node); +gboolean obt_parse_load_theme_file(ObtParseInst *inst, + const gchar *theme, + const gchar *domain, + const gchar *filename, + const gchar *root_node); +gboolean obt_parse_load_mem(ObtParseInst *inst, + gpointer data, guint len, const gchar *root_node); + +void obt_parse_close(ObtParseInst *inst); + +void obt_parse_register(ObtParseInst *inst, const gchar *tag, + ObtParseCallback func, gpointer data); +void obt_parse_tree(ObtParseInst *i, xmlNodePtr node); + + +/* helpers */ + +xmlNodePtr obt_parse_find_node(xmlNodePtr node, const gchar *tag); + +gboolean obt_parse_node_contains (xmlNodePtr node, const gchar *val); +gchar *obt_parse_node_string (xmlNodePtr node); +gint obt_parse_node_int (xmlNodePtr node); +gboolean obt_parse_node_bool (xmlNodePtr node); + +gboolean obt_parse_attr_contains (xmlNodePtr node, const gchar *name, + const gchar *val); +gboolean obt_parse_attr_string (xmlNodePtr node, const gchar *name, + gchar **value); +gboolean obt_parse_attr_int (xmlNodePtr node, const gchar *name, + gint *value); +gboolean obt_parse_attr_bool (xmlNodePtr node, const gchar *name, + gboolean *value); + +/* paths */ + +void parse_paths_startup(); +void parse_paths_shutdown(); + +const gchar* parse_xdg_config_home_path(); +const gchar* parse_xdg_data_home_path(); +GSList* parse_xdg_config_dir_paths(); +GSList* parse_xdg_data_dir_paths(); + +/*! Expands the ~ character to the home directory throughout the given + string */ +gchar *parse_expand_tilde(const gchar *f); +/*! Makes a directory */ +gboolean parse_mkdir(const gchar *path, gint mode); +/*! Makes a directory and all its parents */ +gboolean parse_mkdir_path(const gchar *path, gint mode); + +G_END_DECLS + +#endif