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Code Issues Releases Activity

Changed xoap parsing method to xpath, in preparation to include forecast data

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This commit is contained in:
Cesare Tirabassi 2009-07-23 23:46:23 +02:00
parent 922db9af82
commit d349fe56b2
2 changed files with 57 additions and 47 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2009-07-23
* Changed xoap parsing method to xpath, in preparation to include
forecast data
2009-07-19
* Fixed out-of-tree builds
* Update MPD elapsed/progress when stopped (sf.net #2792113)

90
src/weather.c
View File

@ -38,6 +38,15 @@
#endif /* MATH */
#ifdef XOAP
#include <libxml/parser.h>
#include <libxml/xpath.h>
/* Xpath expressions for XOAP xml parsing */
#define NUM_XPATH_EXPRESSIONS 7
const char *xpath_expression[NUM_XPATH_EXPRESSIONS] = {
"/weather/cc/lsup", "/weather/cc/tmp", "/weather/cc/t",
"/weather/cc/bar/r", "/weather/cc/wind/s", "/weather/cc/wind/d",
"/weather/cc/hmid"
};
#endif /* XOAP */
/* Possible sky conditions */
@ -81,35 +90,45 @@ int rel_humidity(int dew_point, int air) {
}
#ifdef XOAP
//TODO: Lets get rid of the recursion
static void parse_cc(PWEATHER *res, xmlNodePtr cc)
static void parse_cc(PWEATHER *res, xmlXPathContextPtr xpathCtx)
{
int i;
char *content;
xmlXPathObjectPtr xpathObj;
xmlNodePtr cur = NULL;
for (cur = cc; cur; cur = cur->next) {
if (cur->type == XML_ELEMENT_NODE) {
if (!xmlStrcmp(cur->name, (const xmlChar *) "lsup")) {
strncpy(res->lastupd, (char *)cur->children->content, 31);
} else if (!xmlStrcmp(cur->name, (const xmlChar *) "tmp")) {
res->temp = atoi((char *)cur->children->content);
} else if (!xmlStrcmp(cur->name, (const xmlChar *) "t")) {
for (i = 0; i < NUM_XPATH_EXPRESSIONS; i++) {
xpathObj = xmlXPathEvalExpression((xmlChar *)xpath_expression[i], xpathCtx);
if ((xpathObj != NULL) && (xpathObj->nodesetval->nodeTab[0]->type == XML_ELEMENT_NODE)) {
content = (char *)xmlNodeGetContent(xpathObj->nodesetval->nodeTab[0]);
switch(i) {
case 0:
strncpy(res->lastupd, content, 31);
break;
case 1:
res->temp = atoi(content);
break;
case 2:
if(res->xoap_t[0] == '\0') {
strncpy(res->xoap_t, (char *)cur->children->content, 31);
strncpy(res->xoap_t, content, 31);
}
} else if (!xmlStrcmp(cur->name, (const xmlChar *) "r")) {
res->bar = atoi((char *)cur->children->content);
} else if (!xmlStrcmp(cur->name, (const xmlChar *) "s")) {
res->wind_s = atoi((char *)cur->children->content);
} else if (!xmlStrcmp(cur->name, (const xmlChar *) "d")) {
if (isdigit((char)cur->children->content[0])) {
res->wind_d = atoi((char *)cur->children->content);
break;
case 3:
res->bar = atoi(content);
break;
case 4:
res->wind_s = atoi(content);
break;
case 5:
if (isdigit((char)content[0])) {
res->wind_d = atoi(content);
}
} else if (!xmlStrcmp(cur->name, (const xmlChar *) "hmid")) {
res->hmid = atoi((char *)cur->children->content);
break;
case 6:
res->hmid = atoi(content);
}
xmlFree(content);
}
parse_cc(res, cur->children);
xmlXPathFreeObject(xpathObj);
}
return;
}
@ -117,37 +136,24 @@ static void parse_cc(PWEATHER *res, xmlNodePtr cc)
static void parse_weather_xml(PWEATHER *res, const char *data)
{
xmlDocPtr doc;
xmlNodePtr cur;
xmlXPathContextPtr xpathCtx;
if (!(doc = xmlReadMemory(data, strlen(data), "", NULL, 0))) {
ERR("weather: can't read xml data");
return;
}
cur = xmlDocGetRootElement(doc);
while(cur) {
if (cur->type == XML_ELEMENT_NODE) {
if (!xmlStrcmp(cur->name, (const xmlChar *) "weather")) {
cur = cur->children;
while (cur != NULL) {
if (cur->type == XML_ELEMENT_NODE) {
if (!xmlStrcmp(cur->name, (const xmlChar *) "cc")) {
parse_cc(res, cur->children);
xpathCtx = xmlXPathNewContext(doc);
if(xpathCtx == NULL) {
ERR("weather: unable to create new XPath context");
xmlFreeDoc(doc);
return;
}
}
cur = cur->next;
}
}
}
cur = cur->next;
}
ERR("weather: incorrect xml data");
parse_cc(res, xpathCtx);
xmlXPathFreeContext(xpathCtx);
xmlFreeDoc(doc);
return ;
return;
}
#endif /* XOAP */