wine/misc/options.c
2002-10-01 18:07:37 +00:00

245 lines
6.7 KiB
C

/*
* Option parsing
*
* Copyright 2000 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include "winbase.h"
#include "winnls.h"
#include "winternl.h"
#include "wine/library.h"
#include "options.h"
#include "module.h"
#include "wine/debug.h"
struct option_descr
{
const char *longname;
char shortname;
int has_arg;
int inherit;
void (*func)( const char *arg );
const char *usage;
};
const char *argv0; /* the original argv[0] */
const char *full_argv0; /* the full path of argv[0] (if known) */
static char *inherit_str; /* options to pass to child processes */
static void DECLSPEC_NORETURN out_of_memory(void);
static void out_of_memory(void)
{
MESSAGE( "Virtual memory exhausted\n" );
ExitProcess(1);
}
static void do_debugmsg( const char *arg );
static void do_help( const char *arg );
static void do_version( const char *arg );
static const struct option_descr option_table[] =
{
{ "debugmsg", 0, 1, 1, do_debugmsg,
"--debugmsg name Turn debugging-messages on or off" },
{ "dll", 0, 1, 1, MODULE_AddLoadOrderOption,
"--dll name Enable or disable built-in DLLs" },
{ "help", 'h', 0, 0, do_help,
"--help,-h Show this help message" },
{ "version", 'v', 0, 0, do_version,
"--version,-v Display the Wine version" },
{ NULL, 0, 0, 0, NULL, NULL } /* terminator */
};
static void do_help( const char *arg )
{
OPTIONS_Usage();
}
static void do_version( const char *arg )
{
MESSAGE( "%s\n", PACKAGE_STRING );
ExitProcess(0);
}
static void do_debugmsg( const char *arg )
{
if (wine_dbg_parse_options( arg ))
{
MESSAGE("%s: Syntax: --debugmsg [class]+xxx,... or -debugmsg [class]-xxx,...\n", argv0);
MESSAGE("Example: --debugmsg +all,warn-heap\n"
" turn on all messages except warning heap messages\n");
MESSAGE("Available message classes: err, warn, fixme, trace\n\n");
ExitProcess(1);
}
}
static void remove_options( char *argv[], int pos, int count, int inherit )
{
if (inherit)
{
int i, len = 0;
for (i = 0; i < count; i++) len += strlen(argv[pos+i]) + 1;
if (inherit_str)
{
if (!(inherit_str = realloc( inherit_str, strlen(inherit_str) + 1 + len )))
out_of_memory();
strcat( inherit_str, " " );
}
else
{
if (!(inherit_str = malloc( len ))) out_of_memory();
inherit_str[0] = 0;
}
for (i = 0; i < count; i++)
{
strcat( inherit_str, argv[pos+i] );
if (i < count-1) strcat( inherit_str, " " );
}
}
while ((argv[pos] = argv[pos+count])) pos++;
}
/* parse options from the argv array and remove all the recognized ones */
static void parse_options( char *argv[] )
{
const struct option_descr *opt;
int i;
for (i = 0; argv[i]; i++)
{
const char *equalarg = NULL;
char *p = argv[i];
if (*p++ != '-') continue; /* not an option */
if (*p && !p[1]) /* short name */
{
if (*p == '-') break; /* "--" option */
for (opt = option_table; opt->longname; opt++) if (opt->shortname == *p) break;
}
else /* long name */
{
const char *equal = strchr (p, '=');
if (*p == '-') p++;
/* check for the long name */
for (opt = option_table; opt->longname; opt++) {
/* Plain --option */
if (!strcmp( p, opt->longname )) break;
/* --option=value */
if (opt->has_arg &&
equal &&
strlen (opt->longname) == equal - p &&
!strncmp (p, opt->longname, equal - p)) {
equalarg = equal + 1;
break;
}
}
}
if (!opt->longname) continue;
if (equalarg)
{
opt->func( equalarg );
remove_options( argv, i, 1, opt->inherit );
}
else if (opt->has_arg && argv[i+1])
{
opt->func( argv[i+1] );
remove_options( argv, i, 2, opt->inherit );
}
else
{
opt->func( "" );
remove_options( argv, i, 1, opt->inherit );
}
i--;
}
}
/* inherit options from WINEOPTIONS variable */
static void inherit_options( char *buffer )
{
char *argv[256];
unsigned int n;
char *p = strtok( buffer, " \t" );
for (n = 0; n < sizeof(argv)/sizeof(argv[0])-1 && p; n++)
{
argv[n] = p;
p = strtok( NULL, " \t" );
}
argv[n] = NULL;
parse_options( argv );
if (argv[0]) /* an option remains */
{
MESSAGE( "Unknown option '%s' in WINEOPTIONS variable\n\n", argv[0] );
OPTIONS_Usage();
}
}
/***********************************************************************
* OPTIONS_Usage
*/
void OPTIONS_Usage(void)
{
const struct option_descr *opt;
MESSAGE( "%s\n\n", PACKAGE_STRING );
MESSAGE( "Usage: %s [options] [--] program_name [arguments]\n", argv0 );
MESSAGE("The -- has to be used if you specify arguments (of the program)\n\n");
MESSAGE( "Options:\n" );
for (opt = option_table; opt->longname; opt++) MESSAGE( " %s\n", opt->usage );
ExitProcess(0);
}
/***********************************************************************
* OPTIONS_ParseOptions
*/
void OPTIONS_ParseOptions( char *argv[] )
{
char buffer[1024];
int i;
if (GetEnvironmentVariableA( "WINEOPTIONS", buffer, sizeof(buffer) ) && buffer[0])
inherit_options( buffer );
if (!argv) return;
parse_options( argv + 1 );
SetEnvironmentVariableA( "WINEOPTIONS", inherit_str );
/* check if any option remains */
for (i = 1; argv[i]; i++)
{
if (!strcmp( argv[i], "--" ))
{
remove_options( argv, i, 1, 0 );
break;
}
if (argv[i][0] == '-')
{
MESSAGE( "Unknown option '%s'\n\n", argv[i] );
OPTIONS_Usage();
}
}
}