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/**
* Copyright (C) ARM Limited 2010-2012. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "XMLReader.h"
extern void handleException();
XMLReader::XMLReader(const char* xmlstring) {
mPtr = (char*)xmlstring;
mNoMore = false;
mFirstTime = true;
}
XMLReader::~XMLReader() {
}
char* XMLReader::nextTag() {
static char tag[128]; // arbitrarily set max tag size to 127 characters + nul
// Check if past the end of the root tag
if (mNoMore) return NULL;
// Find start character
mPtr = strchr(mPtr, '<');
if (mPtr == NULL) return mPtr;
// Skip tag if it begins with <?
if (mPtr[1] == '?') {
mPtr++;
return nextTag();
}
// Find end of tag name
mPtr++;
char* end = strchr(mPtr, ' ');
if (end == NULL)
end = strchr(mPtr, '>');
if (end == NULL)
return 0;
// Check if tag has no attributes
char* tagend = strchr(mPtr, '>');
if (tagend < end) end = tagend;
// Check the tag name length
unsigned int length = (int)end - (int)mPtr;
if (length > sizeof(tag) - 1) {
// tag name too long, skip it
return nextTag();
}
// Return the tag name
strncpy(tag, mPtr, length);
tag[length] = 0;
// Mark the root tag
if (mFirstTime) {
mEndXML[0] = '/';
strcpy(&mEndXML[1], tag);
mFirstTime = false;
} else if (strcmp(tag, mEndXML) == 0) {
// End of root tag found
mNoMore = true;
}
return tag;
}
void XMLReader::getAttribute(const char* name, char* value, int maxSize, const char* defValue) {
char searchString[128];
// Set up default
strncpy(value, defValue, maxSize - 1);
value[maxSize - 1] = 0;
// Determine search string by ending the name with ="
if (strlen(name) > sizeof(searchString) - 3) return;
strcpy(searchString, name);
strcat(searchString, "=\"");
// Find the beginning of the attribute's search string
char* begin = strstr(mPtr, searchString);
if (begin == NULL) return;
// Find the beginning of the attribute's value
begin += strlen(searchString);
// Find the end of the current tag to make sure the attribute exists within the tag
char* endtag = strchr(mPtr, '>');
if (endtag < begin) return;
// Find the end of the attribute's value
char* end = strchr(begin, '"');
if (end == NULL) return;
// Determine length
int length = (int)end - (int)begin;
if (length > maxSize - 1) return;
strncpy(value, begin, length);
value[length] = 0;
}
int XMLReader::getAttributeAsInteger(const char* name, int defValue) {
char value[32];
getAttribute(name, value, sizeof(value), "");
if (value[0] == 0) return defValue;
if (value[0] == '0' && value[1] == 'x') {
return (int) strtoul(&value[2], (char**)NULL, 16);
}
return strtol(value, NULL, 10);
}
bool XMLReader::getAttributeAsBoolean(const char* name, bool defValue) {
char value[32];
getAttribute(name, value, sizeof(value), "");
if (value[0] == 0) return defValue;
// Convert to lowercase
int i = 0;
while (value[i]) {
value[i] = tolower(value[i]);
i++;
}
if (strcmp(value, "true") == 0 || strcmp(value, "yes") == 0 || strcmp(value, "1") == 0 || strcmp(value, "on") == 0) return true;
else if (strcmp(value, "false") == 0 || strcmp(value, "no") == 0 || strcmp(value, "0") == 0 || strcmp(value, "off") == 0) return false;
else return defValue;
}
int XMLReader::getAttributeLength(const char* name) {
char searchString[128]; // arbitrarily large amount
// Determine search string by ending the name with ="
if (strlen(name) > sizeof(searchString) - 3) return 0;
strcpy(searchString, name);
strcat(searchString, "=\"");
// Find the beginning of the attribute's search string
char* begin = strstr(mPtr, searchString);
if (begin == NULL) return 0;
// Find the beginning of the attribute's value
begin += strlen(searchString);
// Find the end of the current tag to make sure the attribute exists within the tag
char* endtag = strchr(mPtr, '>');
if (endtag < begin) return 0;
// Find the end of the attribute's value
char* end = strchr(begin, '"');
if (end == NULL) return 0;
// Determine length
return (int)end - (int)begin;
}
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