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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;
}
|
