Mercurial > minori

annotate dep/pugixml/docs/samples/load_memory.cpp @ 306:f4538a4c91ba

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
cleanup: remove extraneous executable flags
author Paper <paper@paper.us.eu.org>
date Sun, 19 May 2024 17:48:52 -0400
parents d10b6c6b432e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
55
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
1 #include "pugixml.hpp"
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
2
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
3 #include <iostream>
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
4 #include <cstring>
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
5
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
6 int main()
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
7 {
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
8 // tag::decl[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
9 const char source[] = "<mesh name='sphere'><bounds>0 0 1 1</bounds></mesh>";
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
10 size_t size = sizeof(source);
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
11 // end::decl[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
12
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
13 pugi::xml_document doc;
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
14
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
15 {
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
16 // tag::load_buffer[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
17 // You can use load_buffer to load document from immutable memory block:
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
18 pugi::xml_parse_result result = doc.load_buffer(source, size);
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
19 // end::load_buffer[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
20
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
21 std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
22 }
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
23
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
24 {
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
25 // tag::load_buffer_inplace_begin[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
26 // You can use load_buffer_inplace to load document from mutable memory block; the block's lifetime must exceed that of document
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
27 char* buffer = new char[size];
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
28 memcpy(buffer, source, size);
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
29
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
30 // The block can be allocated by any method; the block is modified during parsing
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
31 pugi::xml_parse_result result = doc.load_buffer_inplace(buffer, size);
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
32 // end::load_buffer_inplace_begin[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
33
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
34 std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
35
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
36 // tag::load_buffer_inplace_end[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
37 // You have to destroy the block yourself after the document is no longer used
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
38 delete[] buffer;
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
39 // end::load_buffer_inplace_end[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
40 }
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
41
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
42 {
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
43 // tag::load_buffer_inplace_own[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
44 // You can use load_buffer_inplace_own to load document from mutable memory block and to pass the ownership of this block
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
45 // The block has to be allocated via pugixml allocation function - using i.e. operator new here is incorrect
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
46 char* buffer = static_cast<char*>(pugi::get_memory_allocation_function()(size));
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
47 memcpy(buffer, source, size);
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
48
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
49 // The block will be deleted by the document
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
50 pugi::xml_parse_result result = doc.load_buffer_inplace_own(buffer, size);
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
51 // end::load_buffer_inplace_own[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
52
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
53 std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
54 }
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
55
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
56 {
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
57 // tag::load_string[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
58 // You can use load to load document from null-terminated strings, for example literals:
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
59 pugi::xml_parse_result result = doc.load_string("<mesh name='sphere'><bounds>0 0 1 1</bounds></mesh>");
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
60 // end::load_string[]
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
61
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
62 std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
63 }
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
64 }
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
65
d10b6c6b432e add xml lib, we will need to use it eventually
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
66 // vim:et