I am reading an XML file into a stringstream buffer in order to parse it using RapidXML. RapidXML is only parsing the names of the XML nodes, but none of their attribute names or values. After some experimentation, I discovered that the problem is not likely to be with RapidXML, but with conversion of the stringstream buffer to a string using std::string content(buffer.str());. The '=' characters that are so important to XML parsing are converted to ' ' (space characters), prior to any RapidXML processing.
The character replacement is evident in the console window when the cout << calls are made in the code below, which is before RapidXML gets its hands on the string.
My code is as follows:
#include <iostream>
#include <fstream>
#include <stdio.h>
#include <conio.h>
#include <string>
#include <stdlib.h>
#include <rapidxml.hpp>
#include <vector>
#include <sstream>
using namespace std;
using namespace rapidxml;
//... main() and so forth, all works fine...
ifstream file(names.at(i)); // names.at(i) works fine...
//...
file.read(fileData, fileSize); // works fine...
//...
// Create XML document object using RapidXML:
xml_document<> doc;
//...
std::stringstream buffer;
buffer << file.rdbuf();
// This is where everything looks okay (i.e., '=' shows up properly):
cout << "\n" << buffer.str() << "\n\nPress a key to continue...";
getchar();
file.close();
std::string content(buffer.str());
// This is where the '=' are replaced by ' ' (space characters):
cout << "\n" << content << "\n\nPress a key to continue...";
getchar();
// Parse XML:
doc.parse<0>(&content[0]);
// Presumably the lack of '=' is preventing RapidXML from parsing attribute
// names and values, which always follow '='...
Thanks in advance for your help.
p.s. I followed advice on using this technique for reading an entire XML file into a stringstream, converting it to a string, and then feeding the string to RapidXML from the following links (thanks to contributors of these pieces of advice, sorry I can't make them work yet...):
Automation Software's RapidXML mini-tutorial
...this method was seen many other places, I won't list them here. Seems sensible enough. My errors seem to be unique. Could this be an ASCII vs. UNICODE issue?
I also tried code from here:
Thomas Whitton's example converting a string buffer to a dynamic cstring
code snippet from the above:
// string to dynamic cstring
std::vector<char> stringCopy(xml.length(), '\0');
std::copy(xml.begin(), xml.end(), stringCopy.begin());
char *cstr = &stringCopy[0];
rapidxml::xml_document<> parsedFromFile;
parsedFromFile.parse<0>(cstr);
...with similar RapidXML failure to parse node attribute names and values. Note that I didn't dump the character vector stringCopy to the console to inspect it, but I am getting the same problem, which for review is:
- I am seeing correctly parsed names of XML tags after RapidXML parsing of the string fed to it for analysis.
- There are no correctly parsed tag attribute names or values. These are dependent upon the '=' character showing up in the string to be parsed.
