ecsl_config: ecsl utilities library

Background

ecsl_config is a library that has the functions for parsing a config file and maintaining an associative array data structure. The library is used in Dusk and Dira projects. The idea behind the library is similar to that of GNU Common C++ which is a cross-platform C++ framework for writing C++ applications that need threads, XML parsing, config files, etc. ecsl_config is not that advanced yet. Here is an example of config file:

# Dusk config file

target x86
connect netlink
sys-headers /usr/include
sys-headers /usr/src/linux

Use the following functions to parse it:

ec_tokens target, connect;
ec_tokens assembly_headers[100];
int num_files;

num_files=0;

ec_init();

ec_add_keyword("target", EC_ONE_VALUE, &target, NULL);
ec_add_keyword("connect", EC_ONE_VALUE, &connect, NULL);
ec_add_keyword("sys-headers", EC_MANY_VALUES, assembly_headers, &num_files);

ec_parse("config.txt");
ec_print();

ec_release();

ecsl_config implements an associative array data structure. This data structure implements a map from an object of one type to an object of another type. Using different types at the same time is allowed. The implementation takes advantage of the C functions overloading extension of GCC. The extension allows to declare functions with different argument types. Here is an example showing how to use the associative array data structure:

char *str;

ec_aa_init();
ec_aa_add(1, "abc");
ec_aa_add(2, 2);

str=ec_aa_get(1);
printf("%s\n", str);

ec_aa_cleanup();

Installation

Download ecsl_config from here. You will also need a modified GCC compiler. Take a copy of the extensibility framework called GEM from here. It will download GCC, patch it, and build an extensible compiler.

Alexey Smirnov 2006-03-05