wmnotify-1.0.0/src/options.c

   1 /*
   2  * options.c -- functions for processing command-line options and arguments
   3  *
   4  * Copyright (C) 2003 Hugo Villeneuve <hugo@hugovil.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
  19  */
  20
  21 #if HAVE_CONFIG_H
  22 #  include "config.h"
  23 #endif
  24
  25 #include <unistd.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28
  29 #if STDC_HEADERS
  30 #  include <string.h>
  31 #elif HAVE_STRINGS_H
  32 #  include <strings.h>
  33 #endif
  34
  35 #include "common.h"
  36 #include "wmnotify.h"
  37 #include "options.h"
  38
  39
  40 /*******************************************************************************
  41  * Display the help message and exit
  42  ******************************************************************************/
  43 static void
  44 DisplayUsage( void )
  45 {
  46   printf( "Usage: %s [OPTIONS]...\n", PACKAGE );
  47   printf( "Email notification for single POP3 or IMAP4 account.\n\n" );
  48   printf( "  -c <config-file>          use alternate configuration file\n" );
  49   printf( "  -d                        Display debugging messages.\n" );
  50   printf( "  -display <host:display>   X display name\n" );
  51   printf( "  -geometry +XPOS+YPOS      initial window position\n" );
  52   printf( "  -h                        display this help and exit\n" );
  53   printf( "  -version                  display version information and exit\n");
  54   printf( "\n" );
  55 }
  56
  57
  58 /*******************************************************************************
  59  * Display version information and exit
  60  ******************************************************************************/
  61 static void
  62 DisplayVersion( void )
  63 {
  64   printf( "\n" );
  65   printf( "  %s, version %s\n", PACKAGE, VERSION );
  66   printf( "  Written by Hugo Villeneuve\n\n" );
  67 }
  68
  69
  70 static void
  71 InvalidOption( const char *message, /*@null@*/ const char *string )
  72 {
  73   if( string == NULL ) {
  74     fprintf(stderr, "%s: %s\n", PACKAGE, message );
  75   }
  76   else {
  77     fprintf(stderr, "%s: %s %s\n", PACKAGE, message, string );
  78   }
  79
  80   fprintf(stderr, "Try `%s -h' for more information.\n", PACKAGE );
  81
  82   exit( EXIT_FAILURE );
  83 }
  84
  85
  86 /*******************************************************************************
  87  * Initializes the different options passed as arguments on the command line.
  88  ******************************************************************************/
  89 void
  90 ParseCommandLineOptions( int argc, char *argv[] )
  91 {
  92   int i;
  93   char *token;
  94   bool config_file_on = false;
  95   bool display_on     = false;
  96   bool geometry_on    = false;
  97
  98   /* Default values. */
  99   wmnotify_infos.debug = false;
 100
 101   for( i = 1; i < argc; i++ ) {
 102     token = argv[i];
 103     switch( token[0] ) {
 104     case '-':
 105       /* Processing options names */
 106       switch( token[1] ) {
 107       case 'c':
 108         if( strlen( &token[1] ) == 1 ) {
 109           config_file_on = true;
 110         }
 111         else {
 112           InvalidOption( "invalid option", token );
 113         }
 114         break;
 115       case 'd':
 116         if( STREQ( "display", &token[1] ) ) {
 117           display_on = true;
 118         }
 119         else if( strlen( &token[1] ) == 1 ) {
 120           wmnotify_infos.debug = true;
 121         }
 122         break;
 123       case 'g':
 124         if( STREQ( "geometry", &token[1] ) ) {
 125           geometry_on = true;
 126         }
 127         else {
 128           InvalidOption( "invalid option", token );
 129         }
 130         break;
 131       case 'h':
 132         if( strlen( &token[1] ) == 1 ) {
 133           DisplayUsage();
 134           exit( EXIT_SUCCESS );
 135         }
 136         InvalidOption( "invalid option", token );
 137         break;
 138       case 'v' :
 139         if( STREQ( "version", &token[1] ) ) {
 140           DisplayVersion();
 141           exit( EXIT_SUCCESS );
 142         }
 143         else {
 144           InvalidOption( "invalid option", token );
 145         }
 146         break;
 147       default:
 148         InvalidOption( "invalid option", token );
 149         break;
 150       } /* end switch( token[1] ) */
 151       break;
 152     default:
 153       /* Processing options arguments */
 154       if( config_file_on != false ) {
 155         wmnotify_infos.optional_config_file = token;
 156         /*strcpy( config_file_name, token );*/
 157         config_file_on = false;
 158       }
 159       else if( display_on != false ) {
 160         display_on = false;
 161         wmnotify_infos.display_arg = token;
 162       }
 163       else if( geometry_on != false ) {
 164         geometry_on = false;
 165         wmnotify_infos.geometry_arg = token;
 166       }
 167       else {
 168         InvalidOption( "invalid option", token );
 169       }
 170       break;
 171     } /* end switch( token[0] ) */
 172   } /* end for */
 173
 174   if( config_file_on != false ) {
 175     InvalidOption( "missing configuration file parameter", NULL );
 176   }
 177   else if( display_on != false ) {
 178     InvalidOption( "missing display parameter", NULL );
 179   }
 180   else if( geometry_on != false ) {
 181     InvalidOption( "missing geometry parameter", NULL );
 182   }
 183 }