| /* This is simple demonstration of how to use expat. This program |
| reads an XML document from standard input and writes a line with |
| the name of each element to standard output indenting child |
| elements by one tab stop more than their parent element. |
| It must be used with Expat compiled for UTF-8 output. |
| __ __ _ |
| ___\ \/ /_ __ __ _| |_ |
| / _ \\ /| '_ \ / _` | __| |
| | __// \| |_) | (_| | |_ |
| \___/_/\_\ .__/ \__,_|\__| |
| |_| XML parser |
| |
| Copyright (c) 1997-2000 Thai Open Source Software Center Ltd |
| Copyright (c) 2001-2003 Fred L. Drake, Jr. <fdrake@users.sourceforge.net> |
| Copyright (c) 2004-2006 Karl Waclawek <karl@waclawek.net> |
| Copyright (c) 2005-2007 Steven Solie <steven@solie.ca> |
| Copyright (c) 2016-2022 Sebastian Pipping <sebastian@pipping.org> |
| Copyright (c) 2017 Rhodri James <rhodri@wildebeest.org.uk> |
| Copyright (c) 2019 Zhongyuan Zhou <zhouzhongyuan@huawei.com> |
| 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; |
| (void)atts; |
| |
| for (i = 0; i < *depthPtr; i++) |
| putchar('\t'); |
| printf("%" XML_FMT_STR "\n", name); |
| *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; |
| } |