mirror of
https://github.com/curl/curl.git
synced 2024-11-21 01:16:58 +08:00
128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at https://curl.haxx.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
***************************************************************************/
|
|
/* <DESC>
|
|
* Download a document and use libtidy to parse the HTML.
|
|
* </DESC>
|
|
*/
|
|
/*
|
|
* LibTidy => https://www.html-tidy.org/
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <tidy.h>
|
|
#include <tidybuffio.h>
|
|
#include <curl/curl.h>
|
|
|
|
/* curl write callback, to fill tidy's input buffer... */
|
|
uint write_cb(char *in, uint size, uint nmemb, TidyBuffer *out)
|
|
{
|
|
uint r;
|
|
r = size * nmemb;
|
|
tidyBufAppend(out, in, r);
|
|
return r;
|
|
}
|
|
|
|
/* Traverse the document tree */
|
|
void dumpNode(TidyDoc doc, TidyNode tnod, int indent)
|
|
{
|
|
TidyNode child;
|
|
for(child = tidyGetChild(tnod); child; child = tidyGetNext(child) ) {
|
|
ctmbstr name = tidyNodeGetName(child);
|
|
if(name) {
|
|
/* if it has a name, then it's an HTML tag ... */
|
|
TidyAttr attr;
|
|
printf("%*.*s%s ", indent, indent, "<", name);
|
|
/* walk the attribute list */
|
|
for(attr = tidyAttrFirst(child); attr; attr = tidyAttrNext(attr) ) {
|
|
printf(tidyAttrName(attr));
|
|
tidyAttrValue(attr)?printf("=\"%s\" ",
|
|
tidyAttrValue(attr)):printf(" ");
|
|
}
|
|
printf(">\n");
|
|
}
|
|
else {
|
|
/* if it doesn't have a name, then it's probably text, cdata, etc... */
|
|
TidyBuffer buf;
|
|
tidyBufInit(&buf);
|
|
tidyNodeGetText(doc, child, &buf);
|
|
printf("%*.*s\n", indent, indent, buf.bp?(char *)buf.bp:"");
|
|
tidyBufFree(&buf);
|
|
}
|
|
dumpNode(doc, child, indent + 4); /* recursive */
|
|
}
|
|
}
|
|
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
CURL *curl;
|
|
char curl_errbuf[CURL_ERROR_SIZE];
|
|
TidyDoc tdoc;
|
|
TidyBuffer docbuf = {0};
|
|
TidyBuffer tidy_errbuf = {0};
|
|
int err;
|
|
if(argc == 2) {
|
|
curl = curl_easy_init();
|
|
curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
|
|
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errbuf);
|
|
curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L);
|
|
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
|
|
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_cb);
|
|
|
|
tdoc = tidyCreate();
|
|
tidyOptSetBool(tdoc, TidyForceOutput, yes); /* try harder */
|
|
tidyOptSetInt(tdoc, TidyWrapLen, 4096);
|
|
tidySetErrorBuffer(tdoc, &tidy_errbuf);
|
|
tidyBufInit(&docbuf);
|
|
|
|
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &docbuf);
|
|
err = curl_easy_perform(curl);
|
|
if(!err) {
|
|
err = tidyParseBuffer(tdoc, &docbuf); /* parse the input */
|
|
if(err >= 0) {
|
|
err = tidyCleanAndRepair(tdoc); /* fix any problems */
|
|
if(err >= 0) {
|
|
err = tidyRunDiagnostics(tdoc); /* load tidy error buffer */
|
|
if(err >= 0) {
|
|
dumpNode(tdoc, tidyGetRoot(tdoc), 0); /* walk the tree */
|
|
fprintf(stderr, "%s\n", tidy_errbuf.bp); /* show errors */
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
fprintf(stderr, "%s\n", curl_errbuf);
|
|
|
|
/* clean-up */
|
|
curl_easy_cleanup(curl);
|
|
tidyBufFree(&docbuf);
|
|
tidyBufFree(&tidy_errbuf);
|
|
tidyRelease(tdoc);
|
|
return err;
|
|
|
|
}
|
|
else
|
|
printf("usage: %s <url>\n", argv[0]);
|
|
|
|
return 0;
|
|
}
|