/* SANE EPSON backend Copyright (C) 2001 SEIKO EPSON CORPORATION Date Author Reason 06/13/2001 N.Sasaki New This file is part of the `iscan' program. 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 along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. As a special exception, the copyright holders give permission to link the code of this program with the esmod library and distribute linked combinations including the two. You must obey the GNU General Public License in all respects for all of the code used other then esmod. */ #include #include #include #include #include "pisa_preference.h" static char * get_line ( FILE * fp, char ** gotstr ); static char * dynamic_fgets ( FILE * fp ); static int parse_line ( char * ptr, cfg_struct * cfg ); static char * parse_word ( char * ptr, char ** word, cfg_key_type key ); static int store_value ( cfg_struct * cfg, char * parameter, char * value ); static char * remove_first_spaces ( char * ptr ); static void set_word ( FILE * fp, cfg_struct * cfg ); static void single_or_double_quote ( char * str, char * ret ); /*----------------------------------------------------------*/ void get_cfg ( char * file, cfg_struct * cfg, int num ) { FILE * fp; char * ptr; char * line_buf; int i; if ( 0 == ( fp = fopen ( file, "r" ) ) ) return; for ( i = 0; i < num; i++, cfg++ ) { rewind ( fp ); while ( 0 != ( ptr = get_line ( fp, & line_buf ) ) ) { if ( parse_line ( ptr, cfg ) ) { free ( line_buf ); break; } free ( line_buf ); } } fclose ( fp ); } /*----------------------------------------------------------*/ void set_cfg ( char * file, cfg_struct * cfg, int num ) { FILE * fp; int i; if ( 0 == ( fp = fopen ( file, "w" ) ) ) return; for ( i = 0; i < num; i++, cfg++ ) set_word ( fp, cfg ); fclose ( fp ); } /*----------------------------------------------------------*/ static char * get_line ( FILE * fp, char ** gotstr ) { char * ptr; while ( 1 ) { if ( 0 == ( * gotstr = dynamic_fgets ( fp ) ) ) return 0; ptr = remove_first_spaces ( * gotstr ); if ( * ptr != '#' && * ptr != '\0' ) return ptr; free ( * gotstr ); } } /*----------------------------------------------------------*/ static char * dynamic_fgets ( FILE * fp ) { char * ptr; char tmp [ 128 ]; int i; if ( 0 == ( ptr = ( char * ) malloc ( 1 ) ) ) return 0; * ptr = '\0'; for ( i = 0;; i++ ) { if ( 0 == fgets ( tmp, 128, fp ) ) { free ( ptr ); return 0; } if ( 0 == ( ptr = ( char * ) realloc ( ptr, 127 * ( i + 1 ) + 1 ) ) ) return 0; strcat ( ptr, tmp ); if ( 0 != strchr ( tmp, '\n' ) ) { * strchr ( ptr, '\n' ) = '\0'; return ptr; } if ( 0 != feof ( fp ) ) return ptr; } } /*----------------------------------------------------------*/ static char * remove_first_spaces ( char * ptr ) { while ( * ptr == ' ' || * ptr == '\t' ) ptr++; return ptr; } /*----------------------------------------------------------*/ static int parse_line ( char * ptr, cfg_struct * cfg ) { char * parameter; char * value; if ( 0 == ( ptr = parse_word ( ptr, & parameter, CFG_PARAM ) ) ) return 0; if ( 0 == ( ptr = parse_word ( ptr, & value, CFG_VALUE ) ) ) return 0; if ( 0 == store_value ( cfg, parameter, value ) ) return 0; free ( parameter ); free ( value ); return 1; } /*----------------------------------------------------------*/ static char * parse_word ( char * ptr, char ** word, cfg_key_type key ) { int len = 0; cfg_quote_type quote; switch ( * ptr ) { case '\"': quote = CFG_QUOTE_DOUBLE; ptr++; break; case '\'': quote = CFG_QUOTE_SINGLE; ptr++; break; default: quote = CFG_QUOTE_NO; break; } while ( 1 ) { if ( quote == CFG_QUOTE_NO ) { if ( * ( ptr + len ) == ' ' || * ( ptr + len ) == '\t' || * ( ptr + len ) == '\0' || * ( ptr + len ) == '#' || ( * ( ptr + len ) == '=' && key == CFG_PARAM ) ) break; } else if ( quote == CFG_QUOTE_DOUBLE ) { if ( * ( ptr + len ) == '\"' ) break; } else if ( quote == CFG_QUOTE_SINGLE ) { if ( * ( ptr + len ) == '\'' ) break; } if ( * ( ptr + len ) == '\0' ) return 0; len++; } if ( 0 == ( * word = ( char * ) malloc ( len + 1 ) ) ) return 0; strncpy ( * word, ptr, len ); * ( * word + len ) = '\0'; ptr += ( len + ( quote == CFG_QUOTE_NO ? 0 : 1 ) ); ptr = remove_first_spaces ( ptr ); switch ( key ) { case CFG_PARAM: if ( * ptr != '=' ) return 0; ptr++; ptr = remove_first_spaces ( ptr ); break; case CFG_VALUE: if ( * ptr != '\0' && * ptr != '#' ) return 0; break; } return ptr; } /*----------------------------------------------------------*/ static int store_value ( cfg_struct * cfg, char * parameter, char * value ) { long tmp, utmp; double dtmp; char * endptr; if ( 0 != strcasecmp ( parameter, cfg->name ) ) return 0; errno = 0; switch ( cfg->type ) { case CFG_BOOL: if ( 0 == strcasecmp ( value, "TRUE" ) || 0 == strcasecmp ( value, "YES" ) || 0 == strcasecmp ( value, "T" ) || 0 == strcasecmp ( value, "Y" ) || 0 == strcasecmp ( value, "1" ) ) * ( int * ) ( cfg->value ) = 1; else * ( int * ) ( cfg->value ) = 0; return 1; case CFG_LONG: tmp = strtol ( value, & endptr, 10 ); if ( * endptr ) return 0; if ( errno == ERANGE ) return 0; * ( long * ) ( cfg->value ) = tmp; return 1; case CFG_ULONG: utmp = strtoul ( value, & endptr, 10 ); if ( * endptr ) return 0; if ( errno == ERANGE ) return 0; * ( unsigned long * ) ( cfg->value ) = utmp; return 1; case CFG_DOUBLE: dtmp = strtod ( value, & endptr ); if ( * endptr ) return 0; if ( errno == ERANGE ) return 0; * ( double * ) ( cfg->value ) = dtmp; return 1; case CFG_STRING: strcpy ( ( char * ) cfg->value, value ); return 1; default: return 0; } return 0; } /*----------------------------------------------------------*/ static void set_word ( FILE * fp, cfg_struct * cfg ) { char c [ 2 ]; switch ( cfg->type ) { case CFG_BOOL: fprintf ( fp, "%s\t= %s\n", cfg->name, ( * ( int * ) ( cfg->value ) ) ? "true" : "false" ); break; case CFG_LONG: fprintf ( fp, "%s\t= %ld\n", cfg->name, * ( long * ) ( cfg->value ) ); break; case CFG_ULONG: fprintf ( fp, "%s\t= %lu\n", cfg->name, * ( unsigned long * ) ( cfg->value ) ); break; case CFG_DOUBLE: fprintf ( fp, "%s\t= %f\n", cfg->name, * ( double * ) ( cfg->value ) ); break; case CFG_STRING: single_or_double_quote ( ( char * ) cfg->value, c ); fprintf ( fp, "%s\t= %s%s%s\n", cfg->name, c, ( char * ) cfg->value, c ); break; } } /*----------------------------------------------------------*/ static void single_or_double_quote ( char * str, char * ret ) { ret [ 1 ] = '\0'; if ( 0 != strchr ( str, '\"' ) ) ret [ 0 ] = '\''; else if ( 0 != strchr ( str, '\'' ) || 0 != strchr ( str, '#' ) || 0 != strchr ( str, '\t' ) || 0 != strchr ( str, ' ' ) ) ret [ 0 ] = '\"'; else ret [ 0 ] = '\0'; }