From 65e90b2d7a86383243e380b2658fad26dce370f0 Mon Sep 17 00:00:00 2001 From: Arseny Kapoulkine Date: Wed, 8 Apr 2015 21:44:16 -0700 Subject: docs: Add docs folder from master --- docs/samples/load_memory.cpp | 66 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 docs/samples/load_memory.cpp (limited to 'docs/samples/load_memory.cpp') diff --git a/docs/samples/load_memory.cpp b/docs/samples/load_memory.cpp new file mode 100644 index 0000000..80bba3c --- /dev/null +++ b/docs/samples/load_memory.cpp @@ -0,0 +1,66 @@ +#include "pugixml.hpp" + +#include +#include + +int main() +{ +// tag::decl[] + const char source[] = "0 0 1 1"; + size_t size = sizeof(source); +// end::decl[] + + pugi::xml_document doc; + + { + // tag::load_buffer[] + // You can use load_buffer to load document from immutable memory block: + pugi::xml_parse_result result = doc.load_buffer(source, size); + // end::load_buffer[] + + std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl; + } + + { + // tag::load_buffer_inplace_begin[] + // You can use load_buffer_inplace to load document from mutable memory block; the block's lifetime must exceed that of document + char* buffer = new char[size]; + memcpy(buffer, source, size); + + // The block can be allocated by any method; the block is modified during parsing + pugi::xml_parse_result result = doc.load_buffer_inplace(buffer, size); + // end::load_buffer_inplace_begin[] + + std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl; + + // tag::load_buffer_inplace_end[] + // You have to destroy the block yourself after the document is no longer used + delete[] buffer; + // end::load_buffer_inplace_end[] + } + + { + // tag::load_buffer_inplace_own[] + // You can use load_buffer_inplace_own to load document from mutable memory block and to pass the ownership of this block + // The block has to be allocated via pugixml allocation function - using i.e. operator new here is incorrect + char* buffer = static_cast(pugi::get_memory_allocation_function()(size)); + memcpy(buffer, source, size); + + // The block will be deleted by the document + pugi::xml_parse_result result = doc.load_buffer_inplace_own(buffer, size); + // end::load_buffer_inplace_own[] + + std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl; + } + + { + // tag::load_string[] + // You can use load to load document from null-terminated strings, for example literals: + pugi::xml_parse_result result = doc.load_string("0 0 1 1"); + // end::load_string[] + + std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl; + } +} + +// vim:et -- cgit v1.2.3