mirror of
https://github.com/moparisthebest/curl
synced 2024-12-22 08:08:50 -05:00
3a6563d668
All plain C examples now (mostly) adhere to the curl code style. While they are only examples, they had diverted so much and contained all sorts of different mixed code styles by now. Having them use a unified style helps users and readability. Also, as they get copy-and-pasted widely by users, making sure they're clean and nice is a good idea. 573 checksrc warnings were addressed.
128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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/* <DESC>
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* Download a document and use libtidy to parse the HTML.
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* </DESC>
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*/
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/*
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* LibTidy => http://tidy.sourceforge.net
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*/
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#include <stdio.h>
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#include <tidy/tidy.h>
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#include <tidy/buffio.h>
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#include <curl/curl.h>
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/* curl write callback, to fill tidy's input buffer... */
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uint write_cb(char *in, uint size, uint nmemb, TidyBuffer *out)
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{
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uint r;
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r = size * nmemb;
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tidyBufAppend( out, in, r );
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return r;
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}
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/* Traverse the document tree */
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void dumpNode(TidyDoc doc, TidyNode tnod, int indent )
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{
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TidyNode child;
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for(child = tidyGetChild(tnod); child; child = tidyGetNext(child) ) {
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ctmbstr name = tidyNodeGetName( child );
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if(name) {
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/* if it has a name, then it's an HTML tag ... */
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TidyAttr attr;
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printf( "%*.*s%s ", indent, indent, "<", name);
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/* walk the attribute list */
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for(attr=tidyAttrFirst(child); attr; attr=tidyAttrNext(attr) ) {
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printf(tidyAttrName(attr));
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tidyAttrValue(attr)?printf("=\"%s\" ",
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tidyAttrValue(attr)):printf(" ");
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}
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printf( ">\n");
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}
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else {
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/* if it doesn't have a name, then it's probably text, cdata, etc... */
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TidyBuffer buf;
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tidyBufInit(&buf);
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tidyNodeGetText(doc, child, &buf);
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printf("%*.*s\n", indent, indent, buf.bp?(char *)buf.bp:"");
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tidyBufFree(&buf);
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}
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dumpNode( doc, child, indent + 4 ); /* recursive */
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}
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}
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int main(int argc, char **argv )
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{
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CURL *curl;
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char curl_errbuf[CURL_ERROR_SIZE];
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TidyDoc tdoc;
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TidyBuffer docbuf = {0};
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TidyBuffer tidy_errbuf = {0};
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int err;
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if(argc == 2) {
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curl = curl_easy_init();
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curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
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curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errbuf);
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curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L);
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curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_cb);
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tdoc = tidyCreate();
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tidyOptSetBool(tdoc, TidyForceOutput, yes); /* try harder */
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tidyOptSetInt(tdoc, TidyWrapLen, 4096);
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tidySetErrorBuffer( tdoc, &tidy_errbuf );
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tidyBufInit(&docbuf);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, &docbuf);
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err=curl_easy_perform(curl);
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if(!err) {
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err = tidyParseBuffer(tdoc, &docbuf); /* parse the input */
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if(err >= 0) {
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err = tidyCleanAndRepair(tdoc); /* fix any problems */
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if(err >= 0) {
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err = tidyRunDiagnostics(tdoc); /* load tidy error buffer */
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if(err >= 0) {
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dumpNode( tdoc, tidyGetRoot(tdoc), 0 ); /* walk the tree */
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fprintf(stderr, "%s\n", tidy_errbuf.bp); /* show errors */
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}
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}
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}
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}
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else
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fprintf(stderr, "%s\n", curl_errbuf);
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/* clean-up */
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curl_easy_cleanup(curl);
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tidyBufFree(&docbuf);
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tidyBufFree(&tidy_errbuf);
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tidyRelease(tdoc);
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return err;
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}
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else
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printf( "usage: %s <url>\n", argv[0] );
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return 0;
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}
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