source: lib/ini.c @ a08e875

  /********************************************************************\
  * BitlBee -- An IRC to other IM-networks gateway                     *
  *                                                                    *
  * Copyright 2002-2008 Wilmer van der Gaast and others                *
  \********************************************************************/

/* INI file reading code                                                */

/*
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License with
  the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
  if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  Suite 330, Boston, MA  02111-1307  USA
*/
#define BITLBEE_CORE
#include "bitlbee.h"

ini_t *ini_open( char *file )
{
        int fd;
        ini_t *ini = NULL;
        struct stat fi;
        
        if( ( fd = open( file, O_RDONLY ) ) != -1 &&
            fstat( fd, &fi ) == 0 &&
            fi.st_size <= 16384 &&
            ( ini = g_malloc( sizeof( ini_t ) + fi.st_size + 1 ) ) &&
            read( fd, ini->file, fi.st_size ) == fi.st_size )
        {
                memset( ini, 0, sizeof( ini_t ) );
                ini->size = fi.st_size;
                ini->file[ini->size] = 0;
                ini->cur = ini->file;
                ini->c_section = "";
                
                close( fd );
                
                return ini;
        }

        if( fd >= 0 )
                close( fd );
        
        ini_close( ini );

        return NULL;
}

/* Strips leading and trailing whitespace and returns a pointer to the first
   non-ws character of the given string. */
static char *ini_strip_whitespace( char *in )
{
        char *e;

        while( isspace( *in ) )
                in++;

        e = in + strlen( in ) - 1;
        while( e > in && isspace( *e ) )
                e--;
        e[1] = 0;
        
        return in;
}

int ini_read( ini_t *file )
{
        char *s;
        
        while( file->cur && file->cur < file->file + file->size )
        {
                char *e, *next;
                
                file->line++;

                /* Find the end of line */
                if( ( e = strchr( file->cur, '\n' ) ) != NULL )
                {
                        *e = 0;
                        next = e + 1;
                }
                else
                {
                        /* No more lines. */
                        e = file->cur + strlen( file->cur );
                        next = NULL;
                }
                
                /* Comment? */
                if( ( s = strchr( file->cur, '#' ) ) != NULL )
                        *s = 0;
                
                file->cur = ini_strip_whitespace( file->cur );
                
                if( *file->cur == '[' )
                {
                        file->cur++;
                        if( ( s = strchr( file->cur, ']' ) ) != NULL )
                        {
                                *s = 0;
                                file->c_section = file->cur;
                        }
                }
                else if( ( s = strchr( file->cur, '=' ) ) != NULL )
                {
                        *s = 0;
                        file->key = ini_strip_whitespace( file->cur );
                        file->value = ini_strip_whitespace( s + 1 );
                        
                        if( ( s = strchr( file->key, '.' ) ) != NULL )
                        {
                                *s = 0;
                                file->section = file->key;
                                file->key = s + 1;
                        }
                        else
                        {
                                file->section = file->c_section;
                        }
                        
                        file->cur = next;
                        return 1;
                }
                /* else: noise/comment/etc, let's just ignore it. */

                file->cur = next;
        }
        
        return 0;
}

void ini_close( ini_t *file )
{
        g_free( file );
}