125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
/* Read an XML document from standard input and print an element
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outline on standard output.
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Must be used with Expat compiled for UTF-8 output.
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__ __ _
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___\ \/ /_ __ __ _| |_
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/ _ \\ /| '_ \ / _` | __|
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| __// \| |_) | (_| | |_
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\___/_/\_\ .__/ \__,_|\__|
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|_| XML parser
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Copyright (c) 2000 Clark Cooper <coopercc@users.sourceforge.net>
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Copyright (c) 2001-2003 Fred L. Drake, Jr. <fdrake@users.sourceforge.net>
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Copyright (c) 2005-2007 Steven Solie <steven@solie.ca>
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Copyright (c) 2005-2006 Karl Waclawek <karl@waclawek.net>
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Copyright (c) 2016-2022 Sebastian Pipping <sebastian@pipping.org>
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Copyright (c) 2017 Rhodri James <rhodri@wildebeest.org.uk>
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Licensed under the MIT license:
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to permit
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persons to whom the Software is furnished to do so, subject to the
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following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <expat.h>
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#ifdef XML_LARGE_SIZE
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# define XML_FMT_INT_MOD "ll"
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#else
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# define XML_FMT_INT_MOD "l"
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#endif
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#ifdef XML_UNICODE_WCHAR_T
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# define XML_FMT_STR "ls"
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#else
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# define XML_FMT_STR "s"
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#endif
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static void XMLCALL
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startElement(void *userData, const XML_Char *name, const XML_Char **atts) {
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int i;
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int *const depthPtr = (int *)userData;
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for (i = 0; i < *depthPtr; i++)
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printf(" ");
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printf("%" XML_FMT_STR, name);
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for (i = 0; atts[i]; i += 2) {
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printf(" %" XML_FMT_STR "='%" XML_FMT_STR "'", atts[i], atts[i + 1]);
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}
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printf("\n");
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*depthPtr += 1;
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}
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static void XMLCALL
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endElement(void *userData, const XML_Char *name) {
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int *const depthPtr = (int *)userData;
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(void)name;
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*depthPtr -= 1;
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}
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int
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main(void) {
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XML_Parser parser = XML_ParserCreate(NULL);
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int done;
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int depth = 0;
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if (! parser) {
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fprintf(stderr, "Couldn't allocate memory for parser\n");
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return 1;
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}
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XML_SetUserData(parser, &depth);
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XML_SetElementHandler(parser, startElement, endElement);
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do {
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void *const buf = XML_GetBuffer(parser, BUFSIZ);
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if (! buf) {
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fprintf(stderr, "Couldn't allocate memory for buffer\n");
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XML_ParserFree(parser);
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return 1;
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}
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const size_t len = fread(buf, 1, BUFSIZ, stdin);
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if (ferror(stdin)) {
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fprintf(stderr, "Read error\n");
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XML_ParserFree(parser);
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return 1;
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}
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done = feof(stdin);
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if (XML_ParseBuffer(parser, (int)len, done) == XML_STATUS_ERROR) {
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fprintf(stderr,
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"Parse error at line %" XML_FMT_INT_MOD "u:\n%" XML_FMT_STR "\n",
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XML_GetCurrentLineNumber(parser),
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XML_ErrorString(XML_GetErrorCode(parser)));
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XML_ParserFree(parser);
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return 1;
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}
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} while (! done);
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XML_ParserFree(parser);
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return 0;
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}
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