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#include <iostream>#include <sstream>#include <string>using std::endl;#include "Handler.h"#include "Parser.h"class NumberHandler: public XMLHandler {public:    NumberHandler(int* result): result(result) {}    void character_data(const char* s, size_t len) {        unsigned int i;        for (i=0; i<len; ++i) {            if ('0' <= s[i] && s[i] <= '9') {                *result *= 10;                *result += s[i] - '0';            } else {                throw_error("Non-digit found in <data>");            }        }    }    NumberHandler* clone() const {        return new NumberHandler(*this);    }private:    int* result;};struct SampleData {    SampleData(): string(), num(0) {}    std::string string;    int num;};class TestHandler: public XMLHandler {public:    TestHandler(SampleData* data): data(data), in_data(false), in_string(false), in_num(false) {        //push_handler(this);    }    void start_element(const std::string& name, const XML_Char**) {        if (name == "data") {            in_data = true;        } else if (name == "string" && in_data) {            in_string = true;        } else if (name == "num" && in_data) {            in_num = true;            push_handler(NumberHandler(&data->num));        }    }    void end_element(const std::string& name) {        if (name == "data") {            if (in_data) {                in_data = false;            } else {                throw_error("end of data but we weren't in data");            }        } else if (name == "string") {            if (in_string) {                in_string = false;            } else {                throw_error("end of string but we weren't in string");            }        } else if (name == "num") {            if (in_num) {                in_num = false;            } else {                throw_error("end of num but we weren't in num");            }        }    }    void character_data(const char *s, size_t len) {        if (in_string) {            data->string.append(s, len);        }    }    TestHandler* clone() const {        return new TestHandler(*this);    }private:    SampleData* data;    bool in_data, in_string, in_num;};int main() {    std::string xml("<data><string>foobarbaz</string><num>12345</num></data>");    SampleData data;    {        //dummy scope to control parser destruction        XMLParser parser;        parser.push_handler(TestHandler(&data));        if (!parser.parse(xml)) {            std::cerr << "Parse error: " << parser.get_error().str() << endl;            return 1;        }    }    if (data.string != "foobarbaz") {        std::cerr << "Parsed string doesn't match" << endl;        return 1;    }    if (data.num != 12345) {        std::cerr << "Parsed number doesn't match" << endl;        return 1;    }    return 0;}/* vim: set ts=4 sw=4 et: */