--- /dev/null
+/*
+ Copyright 2015 IoT.bzh
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#include <unistd.h>
+#include <string.h>
+#include <syslog.h>
+#include <assert.h>
+#include <errno.h>
+
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <libxml/uri.h>
+
+#include "wgt.h"
+#include "wgt-config.h"
+
+const char wgt_config_string_xml_file[] = "config.xml";
+const char wgt_config_string_name[] = "name";
+const char wgt_config_string_description[] = "description";
+const char wgt_config_string_author[] = "author";
+const char wgt_config_string_license[] = "license";
+const char wgt_config_string_icon[] = "icon";
+const char wgt_config_string_content[] = "content";
+const char wgt_config_string_feature[] = "feature";
+const char wgt_config_string_preference[] = "preference";
+const char wgt_config_string_width[] = "width";
+const char wgt_config_string_height[] = "height";
+
+
+static struct wgt *configwgt = NULL;
+static xmlDocPtr configxml = NULL;
+
+static xmlNodePtr next(xmlNodePtr node, const char *type)
+{
+ while (node && node->type != XML_ELEMENT_NODE && strcmp(type, node->name))
+ node = node->next;
+ return node;
+}
+
+static xmlNodePtr first(const char *type)
+{
+ xmlNodePtr root;
+ if (configxml) {
+ root = xmlDocGetRootElement(configxml);
+ if (root)
+ return next(root->children, type);
+ }
+ return NULL;
+}
+
+static int scorelang(xmlNodePtr node)
+{
+ char *lang = xmlNodeGetLang(node);
+ int score = wgt_locales_score(configwgt, lang);
+ xmlFree(lang);
+ return score;
+}
+
+static xmlNodePtr element_based_localisation(const char *type)
+{
+ xmlNodePtr resu, elem;
+ int sr, s;
+
+ resu = first(type);
+ if (resu) {
+ sr = scorelang(resu);
+ elem = next(resu->next, type);
+ while (resu) {
+ s = scorelang(elem);
+ if (s < sr) {
+ resu = elem;
+ sr = s;
+ }
+ elem = next(elem->next, type);
+ }
+ }
+ return resu;
+}
+
+void wgt_config_close()
+{
+ if (configxml) {
+ xmlFreeDoc(configxml);
+ configxml = NULL;
+ configwgt = NULL;
+ }
+}
+
+int wgt_config_open(struct wgt *wgt)
+{
+ int fd;
+ assert(!configxml);
+ fd = wgt_open_read(wgt, wgt_config_string_xml_file);
+ if (fd < 0) {
+ syslog(LOG_ERR, "can't open config file %s", wgt_config_string_xml_file);
+ return fd;
+ }
+ configxml = xmlReadFd(fd, wgt_config_string_xml_file, NULL, 0);
+ close(fd);
+ if (configxml == NULL) {
+ syslog(LOG_ERR, "xml parse of config file %s failed", wgt_config_string_xml_file);
+ return -1;
+ }
+ configwgt = wgt;
+ return 0;
+}
+
+/* elements based on localisation */
+xmlNodePtr wgt_config_name()
+{
+ return element_based_localisation(wgt_config_string_name);
+}
+
+xmlNodePtr wgt_config_description()
+{
+ return element_based_localisation(wgt_config_string_description);
+}
+
+xmlNodePtr wgt_config_license()
+{
+ return element_based_localisation(wgt_config_string_license);
+}
+
+/* elements based on path localisation */
+xmlNodePtr wgt_config_author()
+{
+ return first(wgt_config_string_author);
+}
+
+xmlNodePtr wgt_config_content()
+{
+ return first(wgt_config_string_content);
+}
+
+/* element multiple */
+
+xmlNodePtr wgt_config_first_feature()
+{
+ return first(wgt_config_string_feature);
+}
+
+xmlNodePtr wgt_config_next_feature(xmlNodePtr node)
+{
+ return next(node->next, wgt_config_string_feature);
+}
+
+xmlNodePtr wgt_config_first_preference()
+{
+ return first(wgt_config_string_preference);
+}
+
+xmlNodePtr wgt_config_next_preference(xmlNodePtr node)
+{
+ return next(node->next, wgt_config_string_preference);
+}
+
+xmlNodePtr wgt_config_first_icon()
+{
+ return first(wgt_config_string_icon);
+}
+
+xmlNodePtr wgt_config_next_icon(xmlNodePtr node)
+{
+ return next(node->next, wgt_config_string_icon);
+}
+
+/* best sized icon */
+
+static int score_dim(xmlNodePtr ref, xmlNodePtr x, const char *dim, int request)
+{
+ int r, iref, ix;
+ char *sref, *sx;
+
+ sref = xmlGetProp(ref, dim);
+ if (sref) {
+ iref = atoi(sref);
+ xmlFree(sref);
+ sx = xmlGetProp(x, dim);
+ if (sx) {
+ /* sref && sx */
+ ix = atoi(sx);
+ xmlFree(sx);
+ if (ix >= request) {
+ if (iref >= request)
+ r = ix - iref;
+ else
+ r = request - ix;
+ } else {
+ if (iref >= request)
+ r = iref - request;
+ else
+ r = iref - ix;
+ }
+ } else {
+ /* sref && !sx */
+ if (iref >= request)
+ r = iref - request;
+ else
+ r = 0;
+ }
+ } else {
+ sx = xmlGetProp(x, dim);
+ if (sx) {
+ /* !sref && sx */
+ ix = atoi(sx);
+ xmlFree(sx);
+ if (ix >= request)
+ r = request - ix;
+ else
+ r = 0;
+ } else {
+ /* !sref && !sx */
+ r = 0;
+ }
+ }
+ return r;
+}
+
+static int better_icon(xmlNodePtr ref, xmlNodePtr x, int width, int height)
+{
+ int sw = score_dim(ref, x, wgt_config_string_width, width);
+ int sh = score_dim(ref, x, wgt_config_string_height, height);
+ return sw+sh < 0;
+}
+
+xmlNodePtr wgt_config_icon(int width, int height)
+{
+ xmlNodePtr resu, icon;
+
+ resu = wgt_config_first_icon();
+ icon = wgt_config_next_icon(resu);
+ while (icon) {
+ if (better_icon(resu, icon, width, height))
+ resu = icon;
+ icon = wgt_config_next_icon(icon);
+ }
+ return resu;
+}
+
Code Review / src / app-framework-main.git / blobdiff