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add parsing to libobt with a new API! (it is not completely changed/fixedup yet)

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This commit is contained in:
Dana Jansens 2007-07-26 23:48:53 -04:00
parent 759e9f58a8
commit 0667bbc3e2
3 changed files with 678 additions and 1 deletions
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6
Makefile.am
View file

@ -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

574
obt/parse.c Normal file
View file

@ -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 <glib.h>
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_ERRNO_H
# include <errno.h>
#endif
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#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;
}

99
obt/parse.h Normal file
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@ -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 <libxml/parser.h>
#include <glib.h>
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