137 lines
4.3 KiB
Markdown
137 lines
4.3 KiB
Markdown
The OpenDDL-Parser
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==================
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The OpenDDL-Parser is a small and easy to use library for OpenDDL-file-format-parsing. OpenDDL is the shortcut for Open Data Description Language, a data-declaration language introduced by Eric Lengyel. Please check http://openddl.org/ if you want to learn more about it.
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Build status
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============
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Linux build status: [](https://travis-ci.org/kimkulling/openddl-parser)
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Current coverity check status:
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<a href="https://scan.coverity.com/projects/5606">
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<img alt="Coverity Scan Build Status"
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src="https://scan.coverity.com/projects/5606/badge.svg"/>
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</a>
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Get the source code
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===================
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You can get the code from our git repository, which is located at GitHub. You can clone the repository with the following command:
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> git clone https://github.com/kimkulling/openddl-parser.git
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Building the source from the GitHub-Repo
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========================================
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To build the library you need to install cmake first ( see http://www.cmake.org/ for more information ). Make also sure that a compiler tool-chain is installed on your machine.
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After installing it you can open a console and enter:
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> cmake CMakeLists.txt
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This command will generate a build environment for your installed build enrironment ( for Visual-Studio-users the project files will be generated, for gcc-users the makefiles will be generated ).
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When using an IDE open the IDE and run the build. When using GNU-make type in your console:
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> make
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and that's all.
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When using Visual Studio CMake will generate you a solution for ythe library. Just build it there.
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Use the library
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===============
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To use the OpenDDL-parser you need to build the lib first. Now add the
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> <Repo-folder>/include
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to your include-path and the
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> <Repo-folder>/lib
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to your lib-folder. Link the openddl.lib to your application.
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Here is a small example how to use the lib:
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```cpp
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#include <iostream>
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#include <cassert>
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#include <openddlparser/OpenDDLParser.h>
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USE_ODDLPARSER_NS;
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int main( int argc, char *argv[] ) {
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if( argc < 3 ) {
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return 1;
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}
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char *filename( nullptr );
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if( 0 == strncmp( FileOption, argv[ 1 ], strlen( FileOption ) ) ) {
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filename = argv[ 2 ];
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}
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std::cout << "file to import: " << filename << std::endl;
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if( nullptr == filename ) {
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std::cerr << "Invalid filename." << std::endl;
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return Error;
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}
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FILE *fileStream = fopen( filename, "r+" );
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if( NULL == filename ) {
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std::cerr << "Cannot open file " << filename << std::endl;
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return 1;
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}
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// obtain file size:
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fseek( fileStream, 0, SEEK_END );
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const size_t size( ftell( fileStream ) );
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rewind( fileStream );
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if( size > 0 ) {
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char *buffer = new char[ size ];
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const size_t readSize( fread( buffer, sizeof( char ), size, fileStream ) );
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assert( readSize == size );
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OpenDDLParser theParser;
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theParser.setBuffer( buffer, size );
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const bool result( theParser.parse() );
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if( !result ) {
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std::cerr << "Error while parsing file " << filename << "." << std::endl;
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}
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}
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return 0;
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}
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```
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How to access the imported data
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===============================
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The data is organized as a tree. You can get the root-node of the tree with the following code:
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```cpp
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OpenDDLParser theParser;
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theParser.setBuffer( buffer, size );
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const bool result( theParser.parse() );
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if ( result ) {
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DDLNode *root = theParser.getRoot();
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DDLNode::DllNodeList childs = root->getChildNodeList();
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for ( size_t i=0; i<childs.size(); i++ ) {
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DDLNode *child = childs[ i ];
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Property *prop = child->getProperty(); // to get properties
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std::string type = child->getType(); // to get the node type
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Value *values = child->getValue(); // to get the data;
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// to loop through all values
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while ( values != ddl_nullptr ) {
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int current = values->getInt32();
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values = value->getNext();
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}
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}
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}
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```
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The node instance called root contains the data.
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All data lists are organized as linked lists.
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Reference documentation
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=======================
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Please check http://kimkulling.github.io/openddl-parser/doxygen_html/index.html.
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Projects using OpenDDL-Parser
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=============================
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- Asset Importer Lib: https://github.com/assimp/assimp .
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