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68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/*
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* Copyright (c) 2013 Tim Ruehsen
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* Copyright (c) 2015-2024 Free Software Foundation, Inc.
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*
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* This file is part of libwget.
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*
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* Libwget is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Libwget is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libwget. If not, see <https://www.gnu.org/licenses/>.
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*
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*
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* Example for CSS parsing using libwget
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*
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* Changelog
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* 14.01.2013 Tim Ruehsen created
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*
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* Demonstrate how to extract URIs from CSS files using callback functions.
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* We don't care about character encoding in this example.
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*
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*/
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#include <unistd.h>
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#include <wget.h>
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static void _css_parse_encoding(void *context WGET_GCC_UNUSED, const char *encoding, size_t len)
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{
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printf("URI encoding '%.*s'\n", (int)len, encoding);
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}
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static void _css_parse_uri(void *context WGET_GCC_UNUSED, const char *url, size_t len, size_t pos WGET_GCC_UNUSED)
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{
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printf(" %.*s\n", (int)len, url);
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}
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static void css_parse_localfile(const char *fname)
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{
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wget_css_parse_file(fname, _css_parse_uri, _css_parse_encoding, NULL);
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}
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int main(int argc, const char *const *argv)
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{
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if (!isatty(STDIN_FILENO)) {
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// read CSS data from STDIN
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css_parse_localfile("-");
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} else {
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// parse CSS files given as arguments
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int argpos;
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for (argpos = 1; argpos < argc; argpos++) {
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printf("%s:\n", argv[argpos]);
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// use '-' as filename for STDIN
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css_parse_localfile(argv[argpos]);
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}
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}
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return 0;
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}
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