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comparison dep/pugixml/docs/samples/include.cpp @ 367:8d45d892be88 default tip

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*: instead of pugixml, use Qt XML features this means we have one extra Qt dependency though...
author Paper <paper@tflc.us>
date Sun, 17 Nov 2024 22:55:47 -0500
parents 886f66775f31
children
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366:886f66775f31 367:8d45d892be88
1 #include "pugixml.hpp"
2
3 #include <string.h>
4 #include <iostream>
5
6 // tag::code[]
7 bool load_preprocess(pugi::xml_document& doc, const char* path);
8
9 bool preprocess(pugi::xml_node node)
10 {
11 for (pugi::xml_node child = node.first_child(); child; )
12 {
13 if (child.type() == pugi::node_pi && strcmp(child.name(), "include") == 0)
14 {
15 pugi::xml_node include = child;
16
17 // load new preprocessed document (note: ideally this should handle relative paths)
18 const char* path = include.value();
19
20 pugi::xml_document doc;
21 if (!load_preprocess(doc, path)) return false;
22
23 // insert the comment marker above include directive
24 node.insert_child_before(pugi::node_comment, include).set_value(path);
25
26 // copy the document above the include directive (this retains the original order!)
27 for (pugi::xml_node ic = doc.first_child(); ic; ic = ic.next_sibling())
28 {
29 node.insert_copy_before(ic, include);
30 }
31
32 // remove the include node and move to the next child
33 child = child.next_sibling();
34
35 node.remove_child(include);
36 }
37 else
38 {
39 if (!preprocess(child)) return false;
40
41 child = child.next_sibling();
42 }
43 }
44
45 return true;
46 }
47
48 bool load_preprocess(pugi::xml_document& doc, const char* path)
49 {
50 pugi::xml_parse_result result = doc.load_file(path, pugi::parse_default | pugi::parse_pi); // for <?include?>
51
52 return result ? preprocess(doc) : false;
53 }
54 // end::code[]
55
56 int main()
57 {
58 pugi::xml_document doc;
59 if (!load_preprocess(doc, "character.xml")) return -1;
60
61 doc.print(std::cout);
62 }
63
64 // vim:et