misc/options.c

   1 /*
   2  * Option parsing
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library 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 GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include <stdarg.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winnls.h"
  29 #include "winreg.h"
  30 #include "winternl.h"
  31 #include "wine/library.h"
  32 #include "options.h"
  33 #include "wine/debug.h"
  34
  35 struct option_descr
  36 {
  37     const char *longname;
  38     char        shortname;
  39     int         has_arg;
  40     void      (*func)( const char *arg );
  41     const char *usage;
  42 };
  43
  44 static void do_debugmsg( const char *arg );
  45 static void do_help( const char *arg );
  46 static void do_version( const char *arg );
  47
  48 static const struct option_descr option_table[] =
  49 {
  50     { "debugmsg",     0, 1, do_debugmsg,
  51       "--debugmsg name  Turn debugging-messages on or off" },
  52     { "help",       'h', 0, do_help,
  53       "--help,-h        Show this help message" },
  54     { "version",    'v', 0, do_version,
  55       "--version,-v     Display the Wine version" },
  56     { NULL,           0, 0, NULL, NULL }  /* terminator */
  57 };
  58
  59
  60 static void do_help( const char *arg )
  61 {
  62     OPTIONS_Usage();
  63 }
  64
  65 static void do_version( const char *arg )
  66 {
  67     MESSAGE( "%s\n", PACKAGE_STRING );
  68     ExitProcess(0);
  69 }
  70
  71 static void do_debugmsg( const char *arg )
  72 {
  73     char buffer[1024];
  74
  75     if (wine_dbg_parse_options( arg ))
  76     {
  77         MESSAGE("wine: Syntax: --debugmsg [class]+xxx,...  or -debugmsg [class]-xxx,...\n");
  78         MESSAGE("Example: --debugmsg +all,warn-heap\n"
  79                 "  turn on all messages except warning heap messages\n");
  80         MESSAGE("Available message classes: err, warn, fixme, trace\n\n");
  81         ExitProcess(1);
  82     }
  83     MESSAGE("Warning: the --debugmsg option is deprecated. You should use\n");
  84     MESSAGE("the WINEDEBUG environment variable instead, like this:\n\n");
  85     MESSAGE("  WINEDEBUG=%s wine ...\n\n", arg );
  86
  87     /* append the argument to WINEDEBUG so that it gets inherited */
  88     if (GetEnvironmentVariableA( "WINEDEBUG", buffer, sizeof(buffer)-1 ) && buffer[0])
  89     {
  90         char *p = buffer + strlen(buffer);
  91         *p++ = ',';
  92         lstrcpynA( p, arg, buffer + sizeof(buffer) - p );
  93         SetEnvironmentVariableA( "WINEDEBUG", buffer );
  94     }
  95     else SetEnvironmentVariableA( "WINEDEBUG", arg );
  96 }
  97
  98 static inline void remove_options( char *argv[], int pos, int count )
  99 {
 100     while ((argv[pos] = argv[pos+count])) pos++;
 101 }
 102
 103 /* parse options from the argv array and remove all the recognized ones */
 104 static void parse_options( char *argv[] )
 105 {
 106     const struct option_descr *opt;
 107     int i;
 108
 109     for (i = 0; argv[i]; i++)
 110     {
 111         const char *equalarg = NULL;
 112         char *p = argv[i];
 113         if (*p++ != '-') continue;  /* not an option */
 114         if (*p && !p[1]) /* short name */
 115         {
 116             if (*p == '-') break; /* "--" option */
 117             for (opt = option_table; opt->longname; opt++) if (opt->shortname == *p) break;
 118         }
 119         else  /* long name */
 120         {
 121             const char *equal = strchr  (p, '=');
 122             if (*p == '-') p++;
 123             /* check for the long name */
 124             for (opt = option_table; opt->longname; opt++) {
 125                 /* Plain --option */
 126                 if (!strcmp( p, opt->longname )) break;
 127
 128                 /* --option=value */
 129                 if (opt->has_arg &&
 130                     equal &&
 131                     strlen (opt->longname) == equal - p &&
 132                     !strncmp (p, opt->longname, equal - p)) {
 133                         equalarg = equal + 1;
 134                         break;
 135                     }
 136             }
 137         }
 138         if (!opt->longname) continue;
 139
 140         if (equalarg)
 141         {
 142             opt->func( equalarg );
 143             remove_options( argv, i, 1 );
 144         }
 145         else if (opt->has_arg && argv[i+1])
 146         {
 147             opt->func( argv[i+1] );
 148             remove_options( argv, i, 2 );
 149         }
 150         else
 151         {
 152             opt->func( "" );
 153             remove_options( argv, i, 1 );
 154         }
 155         i--;
 156     }
 157 }
 158
 159 /***********************************************************************
 160  *              OPTIONS_Usage
 161  */
 162 void OPTIONS_Usage(void)
 163 {
 164     const struct option_descr *opt;
 165     MESSAGE( "%s\n\n", PACKAGE_STRING );
 166     MESSAGE( "Usage: wine [options] [--] program_name [arguments]\n" );
 167     MESSAGE("The -- has to be used if you specify arguments (of the program)\n\n");
 168     MESSAGE( "Options:\n" );
 169     for (opt = option_table; opt->longname; opt++) MESSAGE( "   %s\n", opt->usage );
 170     ExitProcess(0);
 171 }
 172
 173 /***********************************************************************
 174  *              OPTIONS_ParseOptions
 175  */
 176 void OPTIONS_ParseOptions( char *argv[] )
 177 {
 178     int i;
 179
 180     parse_options( argv + 1 );
 181
 182     /* check if any option remains */
 183     for (i = 1; argv[i]; i++)
 184     {
 185         if (!strcmp( argv[i], "--" ))
 186         {
 187             remove_options( argv, i, 1 );
 188             break;
 189         }
 190         if (argv[i][0] == '-')
 191         {
 192             MESSAGE( "Unknown option '%s'\n\n", argv[i] );
 193             OPTIONS_Usage();
 194         }
 195     }
 196 }