德洪

/**
 * expat 中的例子改写成D语言
 * Edit By Liu Dehong @ 2007/08/10
 * version: 1.0
 */

import std.stdio;
import std.stream;
import bcd.expat.xmlparse;

extern(C)
void startElement(void* userData, XML_Char* name, XML_Char** atts)
{
    int i;
    int *depthPtr = cast(int *) userData;

    for (i = 0; i < *depthPtr; i++)
        putchar('\t');

    printf("%.*s\n", name);
    *depthPtr += 1;
}

extern(C)
void endElement(void *userData, XML_Char *name)
{
    int *depthPtr = cast(int*) userData;
    *depthPtr -= 1;
}

int main()
{
    int done;
    int depth = 0;
    XML_Parser parser;

    string fn = "a.xml";
    File f = new File(fn);

    parser  = XML_ParserCreate(null);
    XML_SetUserData(parser, &depth);
    XML_SetElementHandler(parser, cast(XML_StartElementHandler)
            &startElement, cast(XML_EndElementHandler) &endElement);

    while (!f.eof())
    {
        string line = f.readLine();
        //writefln(line, line.length);

        if (!XML_Parse(parser, cast(char*) line, line.length, done)) 
        {
            fprintf(stderr,
            "%s at line %d\n",
            XML_ErrorString(XML_GetErrorCode(parser)),
            XML_GetCurrentLineNumber(parser));
            return 1;
        }
    }

    XML_ParserFree(parser);
    return 0;
}