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Name

libconfig - Consistent configuration library.

Synopsis

#include <libconfig.h>

int lc_register_callback(const char *var, char opt, lc_var_type_t type, int (*callback)(const char *, const char *, const char *, const char *, lc_flags_t, void *), void *extra);

int lc_register_var(const char *var, lc_var_type_t type, void *data, char opt);

int lc_process(int argc, char **argv, const char *appname, lc_conf_type_t type, const char *extra);

lc_err_t lc_geterrno(void);

char *lc_geterrstr(void);

Description

Libconfig is a library to provide easy access to configuration data in a consistent and logical manner. Variables (registered through lc_register_var(3) or lc_register_callback(3) ) are processed with the lc_process(3) and lc_process_file(3) functions. Errors can be examined through lc_geterrno(3) and lc_geterrstr(3) . Clean-up may be performed using the lc_cleanup(3) function.

Example


#include <libconfig.h>
#include <stdlib.h>
#include <stdio.h>
int main(int argc, char **argv) {
    int lc_p_ret, lc_rv_ret;
    char *filename = NULL;
    lc_rv_ret = lc_register_var("File", LC_VAR_STRING,
                                &filename, ’f’);
    if (lc_rv_ret != 0) {
        fprintf(stderr, "Error registering variable: %i.\n",
                lc_geterrno());
        return(EXIT_FAILURE);
    }
    lc_p_ret = lc_process(argc, argv, "example", LC_CONF_APACHE,
                          NULL);
    lc_cleanup();
    if (lc_p_ret != 0) {
        fprintf(stderr, "Error processing configuration: \
                %s\n", lc_geterrstr());
        return(EXIT_FAILURE);
    }
    if (filename != NULL) {
        printf("File specified was: %s\n", filename);
    } else {
        printf("No filename specified.\n");
    }
    return(EXIT_SUCCESS);
}

See Also

lc_register_var(3) , lc_register_callback(3) , lc_geterr(3) , lc_geterrstr(3) , lc_cleanup(3) , lc_process(3) , lc_process_file(3)

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