Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/gumbo-parser/examples/find_links.cc @ 43:202a1f38a622

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FIX: New added code snippets did not yet account for the changed return values from "_fromto()"
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:15:08 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 // Copyright 2013 Google Inc. All Rights Reserved.
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2 //
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3 // Licensed under the Apache License, Version 2.0 (the "License");
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4 // you may not use this file except in compliance with the License.
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5 // You may obtain a copy of the License at
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6 //
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7 // http://www.apache.org/licenses/LICENSE-2.0
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8 //
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9 // Unless required by applicable law or agreed to in writing, software
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10 // distributed under the License is distributed on an "AS IS" BASIS,
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11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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12 // See the License for the specific language governing permissions and
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13 // limitations under the License.
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14 //
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15 // Author: jdtang@google.com (Jonathan Tang)
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16 //
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17 // Finds the URLs of all links in the page.
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19 #include <stdlib.h>
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21 #include <fstream>
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22 #include <iostream>
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23 #include <string>
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25 #include "gumbo.h"
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27 static void search_for_links(GumboNode* node) {
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28 if (node->type != GUMBO_NODE_ELEMENT) {
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29 return;
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30 }
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31 GumboAttribute* href;
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32 if (node->v.element.tag == GUMBO_TAG_A &&
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33 (href = gumbo_get_attribute(&node->v.element.attributes, "href"))) {
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34 std::cout << href->value << std::endl;
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35 }
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37 GumboVector* children = &node->v.element.children;
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38 for (unsigned int i = 0; i < children->length; ++i) {
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39 search_for_links(static_cast<GumboNode*>(children->data[i]));
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40 }
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41 }
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43 int main(int argc, char** argv) {
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44 if (argc != 2) {
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45 std::cout << "Usage: find_links <html filename>.\n";
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46 exit(EXIT_FAILURE);
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47 }
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48 const char* filename = argv[1];
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50 std::ifstream in(filename, std::ios::in | std::ios::binary);
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51 if (!in) {
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52 std::cout << "File " << filename << " not found!\n";
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53 exit(EXIT_FAILURE);
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54 }
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56 std::string contents;
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57 in.seekg(0, std::ios::end);
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58 contents.resize(in.tellg());
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59 in.seekg(0, std::ios::beg);
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60 in.read(&contents[0], contents.size());
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61 in.close();
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63 GumboOutput* output = gumbo_parse(contents.c_str());
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64 search_for_links(output->root);
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65 gumbo_destroy_output(&kGumboDefaultOptions, output);
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66 }