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