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|
/* File: "main.c", Time-stamp: <2008-05-09 00:21:43 feeley> */
/* Copyright (c) 1994-2008 by Marc Feeley, All Rights Reserved. */
/* This is the driver of the Gambit-C system */
#define ___INCLUDED_FROM_MAIN
#define ___VERSION 402008
#include "gambit.h"
#include "os_base.h"
#include "os_shell.h"
#include "setup.h"
/**********************************/
#ifdef ___DEBUG
#ifdef ___DEBUG_ALLOC_MEM_TRACE
#define ___alloc_mem(bytes) ___alloc_mem_debug(bytes,__LINE__,__FILE__)
#endif
#endif
/*---------------------------------------------------------------------------*/
___HIDDEN ___UCS_2 gambcopt_env_name[] =
{ 'G', 'A', 'M', 'B', 'C', 'O', 'P', 'T', '\0' };
___HIDDEN ___SCMOBJ usage_err
___P((int debug_settings),
(debug_settings)
int debug_settings;)
{
___setup_params.debug_settings = debug_settings;
if (___DEBUG_SETTINGS_LEVEL(debug_settings) != 0)
{
char *msgs[2];
msgs[0] =
"Usage: program [-:OPTION,OPTION...] ...\n"
"where OPTION is one of:\n"
" mHEAPSIZE set minimum heap size in kilobytes\n"
" hHEAPSIZE set maximum heap size in kilobytes\n"
" lLIVEPERCENT set heap live ratio after GC in percent\n"
" s|S set standard Scheme mode (on|off)\n"
" d[OPT...] set debugging options; OPT is one of:\n"
" p|a treat uncaught exceptions as errors\n"
" (primordial-thread only|all threads)\n"
" r|s|q error handling (create a new REPL|start in\n"
" single-step mode|quit with error status)\n"
" R|D|Q user interrupt handling (create a new REPL|defer\n"
" handling|quit with error status)\n"
" i|c|- select REPL interaction channel\n"
" (ide|console|standard input and output)\n"
" 0..9 verbosity level\n"
" =DIRECTORY override Gambit installation directory\n"
" +ARGUMENT add ARGUMENT to the command line before other arguments\n"
" f[OPT...] set file options; see below for OPT\n"
" t[OPT...] set terminal options; see below for OPT\n"
" -[OPT...] set standard input and output options; see below for OPT\n"
"where OPT is one of:\n"
" A|1|2|4|6|8|U character encoding (ASCII|ISO-8859-1|UCS-2/4|UTF-16/8|UTF)\n"
" l|c|cl end-of-line encoding (LF|CR|CR-LF)\n"
" u|n|f buffering (unbuffered|newline buffered|fully buffered)\n"
" r|R enable character encoding errors (on|off)\n"
" e|E [for terminals only] enable line-editing (on|off)\n";
msgs[1] = 0;
___display_error (msgs);
}
return ___FIXADD(___FIX(___EXIT_CODE_USAGE),___FIX(1));
}
___HIDDEN ___UCS_2STRING extract_string
___P((___UCS_2STRING *start),
(start)
___UCS_2STRING *start;)
{
___UCS_2 c;
___UCS_2STRING p1 = *start;
___UCS_2STRING p2;
int n = 0;
___UCS_2STRING result;
while ((c = *p1) != '\0' && (c != ',' || p1[1] == ','))
{
p1++;
if (c == ',')
p1++;
n++;
}
p2 = *start;
*start = p1;
result = ___CAST(___UCS_2STRING,
___alloc_mem ((n+1) * sizeof (___UCS_2)));
if (result != 0)
{
p1 = result;
while ((c = *p2) != '\0' && (c != ',' || p2[1] == ','))
{
p2++;
if (c == ',')
p2++;
*p1++ = c;
}
*p1++ = '\0';
}
return result;
}
___HIDDEN ___BOOL extend_argv
___P((___UCS_2STRING **argv,
int pos,
int nb_to_add,
___BOOL free_old),
(argv,
pos,
nb_to_add,
free_old)
___UCS_2STRING **argv;
int pos;
int nb_to_add;
___BOOL free_old;)
{
int i;
int n = 0;
___UCS_2STRING *old_argv = *argv;
___UCS_2STRING *new_argv;
while (old_argv[n++] != 0) ;
new_argv = ___CAST(___UCS_2STRING*,
___alloc_mem ((n+nb_to_add) * sizeof (___UCS_2STRING)));
if (new_argv == 0)
return 0;
for (i=pos; i<n; i++)
new_argv[i+nb_to_add] = old_argv[i];
for (i=0; i<pos; i++)
new_argv[i] = old_argv[i];
*argv = new_argv;
if (free_old)
___free_mem (old_argv);
return 1;
}
int ___main
___P((___mod_or_lnk (*linker)(___global_state_struct*)),
(linker)
___mod_or_lnk (*linker)();)
{
#define LARGEST_ULONG (unsigned long)(~___CAST(unsigned long,0))
___UCS_2STRING *argv;
___UCS_2STRING *current_argv;
___UCS_2STRING runtime_options;
int extra_arg_pos;
int contract_argv;
int options_source;
___UCS_2STRING gambcdir;
___UCS_2STRING gambcopt;
unsigned long min_heap_len;
unsigned long max_heap_len;
int live_percent;
int standard_level;
int debug_settings;
int file_settings;
int terminal_settings;
int stdio_settings;
___SCMOBJ e;
___setup_params_struct setup_params;
/* handle arguments to runtime */
argv = ___program_startup_info.argv;
gambcdir = 0;
gambcopt = 0;
min_heap_len = 0;
max_heap_len = 0;
live_percent = 0;
standard_level = 0;
debug_settings = ___DEBUG_SETTINGS_INITIAL;
file_settings = ___FILE_SETTINGS_INITIAL;
terminal_settings = ___TERMINAL_SETTINGS_INITIAL;
stdio_settings = ___STDIO_SETTINGS_INITIAL;
if (argv != 0
&& (runtime_options = argv[1]) != 0
&& runtime_options[0] == '-'
&& runtime_options[1] == ':')
runtime_options += 2;
else
runtime_options = 0;
current_argv = argv;
extra_arg_pos = 1;
contract_argv = (runtime_options != 0);
for (options_source=0; options_source<3; options_source++)
{
___UCS_2STRING arg;
if (options_source == 0)
{
if ((e = ___getenv_UCS_2 (gambcopt_env_name, &gambcopt))
!= ___FIX(___NO_ERR))
goto after_setup;
arg = gambcopt;
}
else if (options_source == 1)
{
arg = ___program_startup_info.script_line;
if (arg != 0)
{
for (;;)
{
if (*arg == '\0')
{
arg = 0;
break;
}
if (arg[0] == ' '
&& arg[1] == '-'
&& arg[2] == ':')
{
arg += 3;
break;
}
arg++;
}
}
}
else
arg = runtime_options;
if (arg == 0)
continue;
do
{
___UCS_2STRING s = arg++;
switch (*s)
{
case 'm':
case 'h':
case 'l':
{
unsigned long argval = 0;
while (*arg >= '0' && *arg <= '9')
{
unsigned int n = *arg - '0';
if (argval > (LARGEST_ULONG>>10)/10 ||
(argval == (LARGEST_ULONG>>10)/10 &&
n > ((LARGEST_ULONG>>10)-argval*10)))
{
e = usage_err (debug_settings);
goto after_setup;
}
argval = argval*10 + n;
arg++;
}
if (arg == s+1)
{
e = usage_err (debug_settings);
goto after_setup;
}
switch (*s)
{
case 'm': min_heap_len = argval<<10;
break;
case 'h': max_heap_len = argval<<10;
break;
case 'l': if (argval > 100)
argval = 100;
live_percent = argval;
break;
}
break;
}
case 's':
standard_level = 5;
break;
case 'S':
standard_level = 1;
break;
case 'd':
{
if (*arg == '\0' || *arg == ' ' || *arg == ',')
debug_settings = ___DEBUG_SETTINGS_DEFAULT;
else
while (*arg != '\0' && *arg != ' ' && *arg != ',')
{
if (*arg >= '0' && *arg <= '9')
debug_settings =
(debug_settings & ~___DEBUG_SETTINGS_LEVEL_MASK)
| ((*arg - '0') << ___DEBUG_SETTINGS_LEVEL_SHIFT);
else
switch (*arg)
{
case 'p': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_UNCAUGHT_MASK)
| (___DEBUG_SETTINGS_UNCAUGHT_PRIMORDIAL
<< ___DEBUG_SETTINGS_UNCAUGHT_SHIFT);
break;
case 'a': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_UNCAUGHT_MASK)
| (___DEBUG_SETTINGS_UNCAUGHT_ALL
<< ___DEBUG_SETTINGS_UNCAUGHT_SHIFT);
break;
case 'r': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_ERROR_MASK)
| (___DEBUG_SETTINGS_ERROR_REPL
<< ___DEBUG_SETTINGS_ERROR_SHIFT);
break;
case 's': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_ERROR_MASK)
| (___DEBUG_SETTINGS_ERROR_SINGLE_STEP
<< ___DEBUG_SETTINGS_ERROR_SHIFT);
break;
case 'q': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_ERROR_MASK)
| (___DEBUG_SETTINGS_ERROR_QUIT
<< ___DEBUG_SETTINGS_ERROR_SHIFT);
break;
case 'R': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_USER_INTR_MASK)
| (___DEBUG_SETTINGS_USER_INTR_REPL
<< ___DEBUG_SETTINGS_USER_INTR_SHIFT);
break;
case 'D': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_USER_INTR_MASK)
| (___DEBUG_SETTINGS_USER_INTR_DEFER
<< ___DEBUG_SETTINGS_USER_INTR_SHIFT);
break;
case 'Q': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_USER_INTR_MASK)
| (___DEBUG_SETTINGS_USER_INTR_QUIT
<< ___DEBUG_SETTINGS_USER_INTR_SHIFT);
break;
case 'i': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_REPL_MASK)
| (___DEBUG_SETTINGS_REPL_IDE
<< ___DEBUG_SETTINGS_REPL_SHIFT);
break;
case 'c': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_REPL_MASK)
| (___DEBUG_SETTINGS_REPL_CONSOLE
<< ___DEBUG_SETTINGS_REPL_SHIFT);
break;
case '-': debug_settings =
(debug_settings
& ~___DEBUG_SETTINGS_REPL_MASK)
| (___DEBUG_SETTINGS_REPL_STDIO
<< ___DEBUG_SETTINGS_REPL_SHIFT);
break;
default:
e = usage_err (debug_settings);
goto after_setup;
}
arg++;
}
break;
}
case '=':
{
___free_UCS_2STRING (gambcdir);
gambcdir = extract_string (&arg);
if (gambcdir == 0)
{
e = ___FIX(___HEAP_OVERFLOW_ERR);
goto after_setup;
}
break;
}
case '+':
{
___UCS_2STRING extra_arg;
if (!extend_argv (¤t_argv,
extra_arg_pos,
1 - contract_argv,
current_argv != argv))
{
e = ___FIX(___HEAP_OVERFLOW_ERR);
goto after_setup;
}
contract_argv = 0;
if ((extra_arg = extract_string (&arg)) == 0)
{
e = ___FIX(___HEAP_OVERFLOW_ERR);
goto after_setup;
}
current_argv[extra_arg_pos++] = extra_arg;
break;
}
case 't':
case 'f':
case '-':
{
int settings = 0;
switch (*s)
{
case 'f':
settings = file_settings;
break;
case 't':
settings = terminal_settings;
break;
case '-':
settings = stdio_settings;
break;
}
while (*arg != '\0' && *arg != ' ' && *arg != ',')
{
switch (*arg++)
{
case 'A': settings = ___CHAR_ENCODING_MASK(settings)
|___CHAR_ENCODING_ASCII;
break;
case '1': settings = ___CHAR_ENCODING_MASK(settings)
|___CHAR_ENCODING_ISO_8859_1;
break;
case '2': settings = ___CHAR_ENCODING_MASK(settings)
|___CHAR_ENCODING_UCS_2;
break;
case '4': settings = ___CHAR_ENCODING_MASK(settings)
|___CHAR_ENCODING_UCS_4;
break;
case '6': settings = ___CHAR_ENCODING_MASK(settings)
|___CHAR_ENCODING_UTF_16;
break;
case '8': settings = ___CHAR_ENCODING_MASK(settings)
|___CHAR_ENCODING_UTF_8;
break;
case 'U': settings = ___CHAR_ENCODING_MASK(settings)
|___CHAR_ENCODING_UTF;
break;
case 'l': settings = ___EOL_ENCODING_MASK(settings)
|((___EOL_ENCODING(settings)
==___EOL_ENCODING_CR)
?___EOL_ENCODING_CRLF
:___EOL_ENCODING_LF);
break;
case 'c': settings = ___EOL_ENCODING_MASK(settings)
|___EOL_ENCODING_CR;
break;
case 'u': settings = ___BUFFERING_MASK(settings)
|___NO_BUFFERING;
break;
case 'n': settings = ___BUFFERING_MASK(settings)
|___LINE_BUFFERING;
break;
case 'f': settings = ___BUFFERING_MASK(settings)
|___FULL_BUFFERING;
break;
case 'r': settings = ___CHAR_ENCODING_ERRORS_MASK(settings)
|___CHAR_ENCODING_ERRORS_ON;
break;
case 'R': settings = ___CHAR_ENCODING_ERRORS_MASK(settings)
|___CHAR_ENCODING_ERRORS_OFF;
break;
case 'e':
case 'E': if (*s != 't')
{
e = usage_err (debug_settings);
goto after_setup;
}
settings =
___TERMINAL_LINE_EDITING_MASK(settings)
|((arg[-1] == 'e')
?___TERMINAL_LINE_EDITING_ON
:___TERMINAL_LINE_EDITING_OFF);
break;
default:
e = usage_err (debug_settings);
goto after_setup;
}
}
switch (*s)
{
case 'f':
file_settings = settings;
break;
case 't':
terminal_settings = settings;
break;
case '-':
stdio_settings = settings;
break;
}
break;
}
default:
{
arg--;
break;
}
}
} while (*arg++ == ',');
if (arg[-1] != '\0' && arg[-1] != ' ')
{
e = usage_err (debug_settings);
goto after_setup;
}
}
if (contract_argv != 0)
{
if (!extend_argv (¤t_argv,
extra_arg_pos,
-1,
0)) /* we know that current_argv == argv */
{
e = ___FIX(___HEAP_OVERFLOW_ERR);
goto after_setup;
}
}
#ifdef ___FORCE_MAX_HEAP
if (max_heap_len == 0 || max_heap_len > (___FORCE_MAX_HEAP<<10))
max_heap_len = ___FORCE_MAX_HEAP<<10;
#endif
/* Setup program, run it and perform any cleanup necessary. */
___setup_params_reset (&setup_params);
setup_params.version = ___VERSION;
setup_params.argv = current_argv;
setup_params.min_heap = min_heap_len;
setup_params.max_heap = max_heap_len;
setup_params.live_percent = live_percent;
setup_params.standard_level = standard_level;
setup_params.debug_settings = debug_settings;
setup_params.file_settings = file_settings;
setup_params.terminal_settings = terminal_settings;
setup_params.stdio_settings = stdio_settings;
setup_params.gambcdir = gambcdir;
setup_params.linker = linker;
e = ___setup (&setup_params);
after_setup:
while (extra_arg_pos > 1)
___free_UCS_2STRING (current_argv[--extra_arg_pos]);
if (current_argv != argv)
___free_mem (current_argv);
___free_UCS_2STRING (gambcdir);
___free_UCS_2STRING (gambcopt);
if (e == ___FIX(___NO_ERR))
{
___cleanup ();
e = ___FIX(___EXIT_CODE_OK);
}
else if (e > ___FIX(___NO_ERR))
e = ___FIXSUB(e,___FIX(1));
else
{
#ifdef ___DEBUG
___printf ("___setup returned error code %d\n", ___INT(e));
#endif
e = ___FIX(___EXIT_CODE_OSERR);
}
return ___INT(e);
}
/*---------------------------------------------------------------------------*/
|
