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annotate dep/pugixml/docs/samples/load_memory.cpp @ 322:c32467cd06bb

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core/strings: add Strings::Translate function as tr() -> ToUtf8String
author Paper <paper@paper.us.eu.org>
date Wed, 12 Jun 2024 22:15:53 -0400
parents d10b6c6b432e
children
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d10b6c6b432e add xml lib, we will need to use it eventually
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1 #include "pugixml.hpp"
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2
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3 #include <iostream>
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4 #include <cstring>
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5
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6 int main()
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7 {
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8 // tag::decl[]
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9 const char source[] = "<mesh name='sphere'><bounds>0 0 1 1</bounds></mesh>";
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10 size_t size = sizeof(source);
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11 // end::decl[]
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12
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13 pugi::xml_document doc;
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14
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15 {
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16 // tag::load_buffer[]
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17 // You can use load_buffer to load document from immutable memory block:
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18 pugi::xml_parse_result result = doc.load_buffer(source, size);
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19 // end::load_buffer[]
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20
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21 std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
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22 }
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23
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24 {
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25 // tag::load_buffer_inplace_begin[]
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26 // You can use load_buffer_inplace to load document from mutable memory block; the block's lifetime must exceed that of document
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27 char* buffer = new char[size];
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28 memcpy(buffer, source, size);
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29
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30 // The block can be allocated by any method; the block is modified during parsing
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31 pugi::xml_parse_result result = doc.load_buffer_inplace(buffer, size);
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32 // end::load_buffer_inplace_begin[]
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33
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34 std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
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35
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36 // tag::load_buffer_inplace_end[]
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37 // You have to destroy the block yourself after the document is no longer used
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38 delete[] buffer;
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39 // end::load_buffer_inplace_end[]
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40 }
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41
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42 {
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43 // tag::load_buffer_inplace_own[]
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44 // You can use load_buffer_inplace_own to load document from mutable memory block and to pass the ownership of this block
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45 // The block has to be allocated via pugixml allocation function - using i.e. operator new here is incorrect
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46 char* buffer = static_cast<char*>(pugi::get_memory_allocation_function()(size));
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47 memcpy(buffer, source, size);
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48
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49 // The block will be deleted by the document
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50 pugi::xml_parse_result result = doc.load_buffer_inplace_own(buffer, size);
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51 // end::load_buffer_inplace_own[]
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52
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53 std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
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54 }
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55
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56 {
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57 // tag::load_string[]
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58 // You can use load to load document from null-terminated strings, for example literals:
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59 pugi::xml_parse_result result = doc.load_string("<mesh name='sphere'><bounds>0 0 1 1</bounds></mesh>");
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60 // end::load_string[]
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61
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62 std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
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63 }
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64 }
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65
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66 // vim:et