source: icGREP/icgrep-devel/icgrep/combine/pugixml/docs/samples/load_memory.cpp @ 5516

Last change on this file since 5516 was 5516, checked in by faldebey, 21 months ago

added combinatorial testing tool

File size: 2.5 KB
Line 
1#include "pugixml.hpp"
2
3#include <iostream>
4#include <cstring>
5
6int main()
7{
8// tag::decl[]
9    const char source[] = "<mesh name='sphere'><bounds>0 0 1 1</bounds></mesh>";
10    size_t size = sizeof(source);
11// end::decl[]
12
13    pugi::xml_document doc;
14
15    {
16    // tag::load_buffer[]
17        // You can use load_buffer to load document from immutable memory block:
18        pugi::xml_parse_result result = doc.load_buffer(source, size);
19    // end::load_buffer[]
20
21        std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
22    }
23
24    {
25    // tag::load_buffer_inplace_begin[]
26        // You can use load_buffer_inplace to load document from mutable memory block; the block's lifetime must exceed that of document
27        char* buffer = new char[size];
28        memcpy(buffer, source, size);
29
30        // The block can be allocated by any method; the block is modified during parsing
31        pugi::xml_parse_result result = doc.load_buffer_inplace(buffer, size);
32    // end::load_buffer_inplace_begin[]
33
34        std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
35
36    // tag::load_buffer_inplace_end[]
37        // You have to destroy the block yourself after the document is no longer used
38        delete[] buffer;
39    // end::load_buffer_inplace_end[]
40    }
41
42    {
43    // tag::load_buffer_inplace_own[]
44        // You can use load_buffer_inplace_own to load document from mutable memory block and to pass the ownership of this block
45        // The block has to be allocated via pugixml allocation function - using i.e. operator new here is incorrect
46        char* buffer = static_cast<char*>(pugi::get_memory_allocation_function()(size));
47        memcpy(buffer, source, size);
48
49        // The block will be deleted by the document
50        pugi::xml_parse_result result = doc.load_buffer_inplace_own(buffer, size);
51    // end::load_buffer_inplace_own[]
52
53        std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
54    }
55
56    {
57    // tag::load_string[]
58        // You can use load to load document from null-terminated strings, for example literals:
59        pugi::xml_parse_result result = doc.load_string("<mesh name='sphere'><bounds>0 0 1 1</bounds></mesh>");
60    // end::load_string[]
61
62        std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
63    }
64}
65
66// vim:et
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