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comparison mupdf-source/thirdparty/curl/docs/examples/htmltidy.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22 /* <DESC>
23 * Download a document and use libtidy to parse the HTML.
24 * </DESC>
25 */
26 /*
27 * LibTidy => https://www.html-tidy.org/
28 */
29
30 #include <stdio.h>
31 #include <tidy.h>
32 #include <tidybuffio.h>
33 #include <curl/curl.h>
34
35 /* curl write callback, to fill tidy's input buffer... */
36 uint write_cb(char *in, uint size, uint nmemb, TidyBuffer *out)
37 {
38 uint r;
39 r = size * nmemb;
40 tidyBufAppend(out, in, r);
41 return r;
42 }
43
44 /* Traverse the document tree */
45 void dumpNode(TidyDoc doc, TidyNode tnod, int indent)
46 {
47 TidyNode child;
48 for(child = tidyGetChild(tnod); child; child = tidyGetNext(child) ) {
49 ctmbstr name = tidyNodeGetName(child);
50 if(name) {
51 /* if it has a name, then it's an HTML tag ... */
52 TidyAttr attr;
53 printf("%*.*s%s ", indent, indent, "<", name);
54 /* walk the attribute list */
55 for(attr = tidyAttrFirst(child); attr; attr = tidyAttrNext(attr) ) {
56 printf(tidyAttrName(attr));
57 tidyAttrValue(attr)?printf("=\"%s\" ",
58 tidyAttrValue(attr)):printf(" ");
59 }
60 printf(">\n");
61 }
62 else {
63 /* if it doesn't have a name, then it's probably text, cdata, etc... */
64 TidyBuffer buf;
65 tidyBufInit(&buf);
66 tidyNodeGetText(doc, child, &buf);
67 printf("%*.*s\n", indent, indent, buf.bp?(char *)buf.bp:"");
68 tidyBufFree(&buf);
69 }
70 dumpNode(doc, child, indent + 4); /* recursive */
71 }
72 }
73
74
75 int main(int argc, char **argv)
76 {
77 if(argc == 2) {
78 CURL *curl;
79 char curl_errbuf[CURL_ERROR_SIZE];
80 TidyDoc tdoc;
81 TidyBuffer docbuf = {0};
82 TidyBuffer tidy_errbuf = {0};
83 int err;
84
85 curl = curl_easy_init();
86 curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
87 curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errbuf);
88 curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L);
89 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
90 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_cb);
91
92 tdoc = tidyCreate();
93 tidyOptSetBool(tdoc, TidyForceOutput, yes); /* try harder */
94 tidyOptSetInt(tdoc, TidyWrapLen, 4096);
95 tidySetErrorBuffer(tdoc, &tidy_errbuf);
96 tidyBufInit(&docbuf);
97
98 curl_easy_setopt(curl, CURLOPT_WRITEDATA, &docbuf);
99 err = curl_easy_perform(curl);
100 if(!err) {
101 err = tidyParseBuffer(tdoc, &docbuf); /* parse the input */
102 if(err >= 0) {
103 err = tidyCleanAndRepair(tdoc); /* fix any problems */
104 if(err >= 0) {
105 err = tidyRunDiagnostics(tdoc); /* load tidy error buffer */
106 if(err >= 0) {
107 dumpNode(tdoc, tidyGetRoot(tdoc), 0); /* walk the tree */
108 fprintf(stderr, "%s\n", tidy_errbuf.bp); /* show errors */
109 }
110 }
111 }
112 }
113 else
114 fprintf(stderr, "%s\n", curl_errbuf);
115
116 /* clean-up */
117 curl_easy_cleanup(curl);
118 tidyBufFree(&docbuf);
119 tidyBufFree(&tidy_errbuf);
120 tidyRelease(tdoc);
121 return err;
122
123 }
124 else
125 printf("usage: %s <url>\n", argv[0]);
126
127 return 0;
128 }