用expat 库解析XML的学习例子
用bcdgen转换的头文件。对xml不大感兴趣。只是尝试用D语言改写，证明它还是能正确处理xml的。
和C程序差不多。真不爽。
/** * 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;}
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