misc/options.c

   1 /*
   2  * Option parsing
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  */
   6
   7 #include "config.h"
   8 #include <string.h>
   9 #include <stdlib.h>
  10
  11 #include "winbase.h"
  12 #include "main.h"
  13 #include "options.h"
  14 #include "version.h"
  15 #include "debugtools.h"
  16
  17 struct option
  18 {
  19     const char *longname;
  20     char        shortname;
  21     int         has_arg;
  22     int         inherit;
  23     void      (*func)( const char *arg );
  24     const char *usage;
  25 };
  26
  27 /* Most Windows C/C++ compilers use something like this to */
  28 /* access argc and argv globally: */
  29 int _ARGC;
  30 char **_ARGV;
  31
  32 /* default options */
  33 struct options Options =
  34 {
  35     NULL,           /* desktopGeometry */
  36     NULL,           /* display */
  37     NULL,           /* dllFlags */
  38     FALSE,          /* synchronous */
  39     FALSE,          /* Managed windows */
  40     NULL            /* Alternate config file name */
  41 };
  42
  43 const char *argv0;       /* the original argv[0] */
  44 const char *full_argv0;  /* the full path of argv[0] (if known) */
  45
  46 static char *inherit_str;  /* options to pass to child processes */
  47
  48 static void out_of_memory(void) WINE_NORETURN;
  49 static void out_of_memory(void)
  50 {
  51     MESSAGE( "Virtual memory exhausted\n" );
  52     ExitProcess(1);
  53 }
  54
  55 static char *xstrdup( const char *str )
  56 {
  57     char *ret = strdup( str );
  58     if (!ret) out_of_memory();
  59     return ret;
  60 }
  61
  62 static void do_config( const char *arg );
  63 static void do_desktop( const char *arg );
  64 static void do_display( const char *arg );
  65 static void do_dll( const char *arg );
  66 static void do_help( const char *arg );
  67 static void do_language( const char *arg );
  68 static void do_managed( const char *arg );
  69 static void do_synchronous( const char *arg );
  70 static void do_version( const char *arg );
  71
  72 static const struct option option_table[] =
  73 {
  74     { "config",       0, 1, 0, do_config,
  75       "--config name    Specify config file to use" },
  76     { "debugmsg",     0, 1, 1, MAIN_ParseDebugOptions,
  77       "--debugmsg name  Turn debugging-messages on or off" },
  78     { "desktop",      0, 1, 1, do_desktop,
  79       "--desktop geom   Use a desktop window of the given geometry" },
  80     { "display",      0, 1, 0, do_display,
  81       "--display name   Use the specified display" },
  82     { "dll",          0, 1, 1, do_dll,
  83       "--dll name       Enable or disable built-in DLLs" },
  84     { "dosver",       0, 1, 1, VERSION_ParseDosVersion,
  85       "--dosver x.xx    DOS version to imitate (e.g. 6.22). Only valid with --winver win31" },
  86     { "help",       'h', 0, 0, do_help,
  87       "--help,-h        Show this help message" },
  88     { "language",     0, 1, 1, do_language,
  89       "--language xx    Set the language (one of Br,Ca,Cs,Cy,Da,De,En,Eo,Es,Fi,Fr,Ga,Gd,Gv,\n"
  90       "                    Hr,Hu,It,Ja,Ko,Kw,Nl,No,Pl,Pt,Sk,Sv,Ru,Wa)" },
  91     { "managed",      0, 0, 0, do_managed,
  92       "--managed        Allow the window manager to manage created windows" },
  93     { "synchronous",  0, 0, 1, do_synchronous,
  94       "--synchronous    Turn on synchronous display mode" },
  95     { "version",    'v', 0, 0, do_version,
  96       "--version,-v     Display the Wine version" },
  97     { "winver",       0, 1, 1, VERSION_ParseWinVersion,
  98       "--winver         Version to imitate (one of win31,win95,nt351,nt40)" },
  99     { NULL, }  /* terminator */
 100 };
 101
 102
 103 static void do_help( const char *arg )
 104 {
 105     OPTIONS_Usage();
 106 }
 107
 108 static void do_version( const char *arg )
 109 {
 110     MESSAGE( "%s\n", WINE_RELEASE_INFO );
 111     ExitProcess(0);
 112 }
 113
 114 static void do_synchronous( const char *arg )
 115 {
 116     Options.synchronous = TRUE;
 117 }
 118
 119 static void do_desktop( const char *arg )
 120 {
 121     Options.desktopGeometry = xstrdup( arg );
 122 }
 123
 124 static void do_display( const char *arg )
 125 {
 126     Options.display = xstrdup( arg );
 127 }
 128
 129 static void do_dll( const char *arg )
 130 {
 131     if (Options.dllFlags)
 132     {
 133         Options.dllFlags = (char *) realloc ( Options.dllFlags,
 134                                             strlen ( Options.dllFlags ) + strlen ( arg ) + 2 );
 135         if ( !Options.dllFlags ) out_of_memory();
 136         strcat ( Options.dllFlags, "+" );
 137         strcat ( Options.dllFlags, arg );
 138     }
 139     else
 140     {
 141         Options.dllFlags = xstrdup( arg );
 142     }
 143 }
 144
 145 static void do_language( const char *arg )
 146 {
 147     SetEnvironmentVariableA( "LANGUAGE", arg );
 148 }
 149
 150 static void do_managed( const char *arg )
 151 {
 152     Options.managed = TRUE;
 153 }
 154
 155 static void do_config( const char *arg )
 156 {
 157     Options.configFileName = xstrdup( arg );
 158 }
 159
 160 static void remove_options( char *argv[], int pos, int count, int inherit )
 161 {
 162     if (inherit)
 163     {
 164         int i, len = 0;
 165         for (i = 0; i < count; i++) len += strlen(argv[pos+i]) + 1;
 166         if (inherit_str)
 167         {
 168             if (!(inherit_str = realloc( inherit_str, strlen(inherit_str) + 1 + len )))
 169                 out_of_memory();
 170             strcat( inherit_str, " " );
 171         }
 172         else
 173         {
 174             if (!(inherit_str = malloc( len ))) out_of_memory();
 175             inherit_str[0] = 0;
 176         }
 177         for (i = 0; i < count; i++)
 178         {
 179             strcat( inherit_str, argv[pos+i] );
 180             if (i < count-1) strcat( inherit_str, " " );
 181         }
 182     }
 183     while ((argv[pos] = argv[pos+count])) pos++;
 184 }
 185
 186 /* parse options from the argv array and remove all the recognized ones */
 187 static void parse_options( char *argv[] )
 188 {
 189     const struct option *opt;
 190     int i;
 191
 192     for (i = 0; argv[i]; i++)
 193     {
 194         char *p = argv[i];
 195         if (*p++ != '-') continue;  /* not an option */
 196         if (*p && !p[1]) /* short name */
 197         {
 198             if (*p == '-') break; /* "--" option */
 199             for (opt = option_table; opt->longname; opt++) if (opt->shortname == *p) break;
 200         }
 201         else  /* long name */
 202         {
 203             if (*p == '-') p++;
 204             /* check for the long name */
 205             for (opt = option_table; opt->longname; opt++)
 206                 if (!strcmp( p, opt->longname )) break;
 207         }
 208         if (!opt->longname) continue;
 209
 210         if (opt->has_arg && argv[i+1])
 211         {
 212             opt->func( argv[i+1] );
 213             remove_options( argv, i, 2, opt->inherit );
 214         }
 215         else
 216         {
 217             opt->func( "" );
 218             remove_options( argv, i, 1, opt->inherit );
 219         }
 220         i--;
 221     }
 222 }
 223
 224 /* inherit options from WINEOPTIONS variable */
 225 static void inherit_options( char *buffer )
 226 {
 227     char *argv[256];
 228     int i;
 229
 230     char *p = strtok( buffer, " \t" );
 231     for (i = 0; i < sizeof(argv)/sizeof(argv[0])-1 && p; i++)
 232     {
 233         argv[i] = p;
 234         p = strtok( NULL, " \t" );
 235     }
 236     argv[i] = NULL;
 237     parse_options( argv );
 238     if (argv[0])  /* an option remains */
 239     {
 240         MESSAGE( "Unknown option '%s' in WINEOPTIONS variable\n\n", argv[0] );
 241         OPTIONS_Usage();
 242     }
 243 }
 244
 245 /***********************************************************************
 246  *              OPTIONS_Usage
 247  */
 248 void OPTIONS_Usage(void)
 249 {
 250     const struct option *opt;
 251     MESSAGE( "Usage: %s [options] program_name [arguments]\n\n", argv0 );
 252     MESSAGE( "Options:\n" );
 253     for (opt = option_table; opt->longname; opt++) MESSAGE( "   %s\n", opt->usage );
 254     ExitProcess(0);
 255 }
 256
 257 /***********************************************************************
 258  *              OPTIONS_ParseOptions
 259  */
 260 void OPTIONS_ParseOptions( char *argv[] )
 261 {
 262     char buffer[1024];
 263     int i;
 264
 265     if (GetEnvironmentVariableA( "WINEOPTIONS", buffer, sizeof(buffer) ) && buffer[0])
 266         inherit_options( buffer );
 267
 268     parse_options( argv + 1 );
 269
 270     SetEnvironmentVariableA( "WINEOPTIONS", inherit_str );
 271
 272     /* check if any option remains */
 273     for (i = 1; argv[i]; i++)
 274     {
 275         if (!strcmp( argv[i], "--" ))
 276         {
 277             remove_options( argv, i, 1, 0 );
 278             break;
 279         }
 280         if (argv[i][0] == '-')
 281         {
 282             MESSAGE( "Unknown option '%s'\n\n", argv[i] );
 283             OPTIONS_Usage();
 284         }
 285     }
 286
 287     /* count the resulting arguments */
 288     _ARGV = argv;
 289     _ARGC = 0;
 290     while (argv[_ARGC]) _ARGC++;
 291 }