#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "libgfortran.h"
#include "../io/io.h"
options_t options = { };
typedef struct variable
{
const char *name;
int value, *var;
void (*init) (struct variable *);
void (*show) (struct variable *);
const char *desc;
int bad;
}
variable;
static void
print_spaces (int n)
{
char buffer[80];
int i;
if (n <= 0)
return;
for (i = 0; i < n; i++)
buffer[i] = ' ';
buffer[i] = '\0';
st_printf (buffer);
}
static const char *
var_source (variable * v)
{
if (getenv (v->name) == NULL)
return "Default";
if (v->bad)
return "Bad ";
return "Set ";
}
static void
init_integer (variable * v)
{
char *p, *q;
p = getenv (v->name);
if (p == NULL)
goto set_default;
for (q = p; *q; q++)
if (!isdigit (*q))
{
v->bad = 1;
goto set_default;
}
*v->var = atoi (p);
return;
set_default:
*v->var = v->value;
return;
}
static void
show_integer (variable * v)
{
st_printf ("%s %d\n", var_source (v), *v->var);
}
static void
init_boolean (variable * v)
{
char *p;
p = getenv (v->name);
if (p == NULL)
goto set_default;
if (*p == '1' || *p == 'Y' || *p == 'y')
{
*v->var = 1;
return;
}
if (*p == '0' || *p == 'N' || *p == 'n')
{
*v->var = 0;
return;
}
v->bad = 1;
set_default:
*v->var = v->value;
return;
}
static void
show_boolean (variable * v)
{
st_printf ("%s %s\n", var_source (v), *v->var ? "Yes" : "No");
}
static void
init_mem (variable * v)
{
int offset, n;
char *p;
p = getenv (v->name);
options.allocate_init_flag = 0;
if (p == NULL)
return;
if (strcasecmp (p, "NONE") == 0)
return;
if (strcasecmp (p, "NaN") == 0)
{
options.allocate_init_flag = 1;
options.allocate_init_value = 0xfff80f95;
return;
}
n = 0;
while (*p)
{
if (!isxdigit (*p))
{
v->bad = 1;
return;
}
offset = '0';
if (islower (*p))
offset = 'a';
if (isupper (*p))
offset = 'A';
n = (n << 4) | (*p++ - offset);
}
options.allocate_init_flag = 1;
options.allocate_init_value = n;
}
static void
show_mem (variable * v)
{
char *p;
p = getenv (v->name);
st_printf ("%s ", var_source (v));
if (options.allocate_init_flag)
st_printf ("0x%x", options.allocate_init_value);
st_printf ("\n");
}
static void
init_sep (variable * v)
{
int seen_comma;
char *p;
p = getenv (v->name);
if (p == NULL)
goto set_default;
v->bad = 1;
options.separator = p;
options.separator_len = strlen (p);
if (options.separator_len == 0)
goto set_default;
seen_comma = 0;
while (*p)
{
if (*p == ',')
{
if (seen_comma)
goto set_default;
seen_comma = 1;
p++;
continue;
}
if (*p++ != ' ')
goto set_default;
}
v->bad = 0;
return;
set_default:
options.separator = " ";
options.separator_len = 1;
}
static void
show_sep (variable * v)
{
st_printf ("%s \"%s\"\n", var_source (v), options.separator);
}
static void
init_string (variable * v)
{
}
static void
show_string (variable * v)
{
const char *p;
p = getenv (v->name);
if (p == NULL)
p = "";
st_printf ("%s \"%s\"\n", var_source (v), p);
}
typedef struct
{
const char *name;
int value;
}
choice;
enum
{ FP_ROUND_NEAREST, FP_ROUND_UP, FP_ROUND_DOWN, FP_ROUND_ZERO };
static choice rounding[] = {
{"NEAREST", FP_ROUND_NEAREST},
{"UP", FP_ROUND_UP},
{"DOWN", FP_ROUND_DOWN},
{"ZERO", FP_ROUND_ZERO},
{NULL}
};
static choice precision[] =
{
{ "24", 1},
{ "53", 2},
{ "64", 0},
{ NULL}
};
static choice signal_choices[] =
{
{ "IGNORE", 1},
{ "ABORT", 0},
{ NULL}
};
static void
init_choice (variable * v, choice * c)
{
char *p;
p = getenv (v->name);
if (p == NULL)
goto set_default;
for (; c->name; c++)
if (strcasecmp (c->name, p) == 0)
break;
if (c->name == NULL)
{
v->bad = 1;
goto set_default;
}
*v->var = c->value;
return;
set_default:
*v->var = v->value;
}
static void
show_choice (variable * v, choice * c)
{
st_printf ("%s ", var_source (v));
for (; c->name; c++)
if (c->value == *v->var)
break;
if (c->name)
st_printf ("%s\n", c->name);
else
st_printf ("(Unknown)\n");
}
static void
init_round (variable * v)
{
init_choice (v, rounding);
}
static void
show_round (variable * v)
{
show_choice (v, rounding);
}
static void
init_precision (variable * v)
{
init_choice (v, precision);
}
static void
show_precision (variable * v)
{
show_choice (v, precision);
}
static void
init_signal (variable * v)
{
init_choice (v, signal_choices);
}
static void
show_signal (variable * v)
{
show_choice (v, signal_choices);
}
static variable variable_table[] = {
{"GFORTRAN_STDIN_UNIT", 5, &options.stdin_unit, init_integer, show_integer,
"Unit number that will be preconnected to standard input\n"
"(No preconnection if negative)"},
{"GFORTRAN_STDOUT_UNIT", 6, &options.stdout_unit, init_integer,
show_integer,
"Unit number that will be preconnected to standard output\n"
"(No preconnection if negative)"},
{"GFORTRAN_STDERR_UNIT", 0, &options.stderr_unit, init_integer,
show_integer,
"Unit number that will be preconnected to standard error\n"
"(No preconnection if negative)"},
{"GFORTRAN_USE_STDERR", 1, &options.use_stderr, init_boolean,
show_boolean,
"Sends library output to standard error instead of standard output."},
{"GFORTRAN_TMPDIR", 0, NULL, init_string, show_string,
"Directory for scratch files. Overrides the TMP environment variable\n"
"If TMP is not set " DEFAULT_TEMPDIR " is used."},
{"GFORTRAN_UNBUFFERED_ALL", 0, &options.all_unbuffered, init_boolean,
show_boolean,
"If TRUE, all output is unbuffered. This will slow down large writes "
"but can be\nuseful for forcing data to be displayed immediately."},
{"GFORTRAN_SHOW_LOCUS", 1, &options.locus, init_boolean, show_boolean,
"If TRUE, print filename and line number where runtime errors happen."},
{"GFORTRAN_OPTIONAL_PLUS", 0, &options.optional_plus, init_boolean, show_boolean,
"Print optional plus signs in numbers where permitted. Default FALSE."},
{"GFORTRAN_DEFAULT_RECL", DEFAULT_RECL, &options.default_recl,
init_integer, show_integer,
"Default maximum record length for sequential files. Most useful for\n"
"adjusting line length of preconnected units. Default "
stringize (DEFAULT_RECL)},
{"GFORTRAN_LIST_SEPARATOR", 0, NULL, init_sep, show_sep,
"Separatator to use when writing list output. May contain any number of "
"spaces\nand at most one comma. Default is a single space."},
{"GFORTRAN_MEM_INIT", 0, NULL, init_mem, show_mem,
"How to initialize allocated memory. Default value is NONE for no "
"initialization\n(faster), NAN for a Not-a-Number with the mantissa "
"0x40f95 or a custom\nhexadecimal value"},
{"GFORTRAN_MEM_CHECK", 0, &options.mem_check, init_boolean, show_boolean,
"Whether memory still allocated will be reported when the program ends."},
{"GFORTRAN_SIGHUP", 0, &options.sighup, init_signal, show_signal,
"Whether the program will IGNORE or ABORT on SIGHUP."},
{"GFORTRAN_SIGINT", 0, &options.sigint, init_signal, show_signal,
"Whether the program will IGNORE or ABORT on SIGINT."},
{"GFORTRAN_FPU_ROUND", 0, &options.fpu_round, init_round, show_round,
"Set floating point rounding. Values are NEAREST, UP, DOWN, ZERO."},
{"GFORTRAN_FPU_PRECISION", 0, &options.fpu_precision, init_precision,
show_precision,
"Precision of intermediate results. Values are 24, 53 and 64."},
{"GFORTRAN_FPU_INVALID", 1, &options.fpu_invalid, init_boolean,
show_boolean,
"Raise a floating point exception on invalid FP operation."},
{"GFORTRAN_FPU_DENORMAL", 1, &options.fpu_denormal, init_boolean,
show_boolean,
"Raise a floating point exception when denormal numbers are encountered."},
{"GFORTRAN_FPU_ZERO", 0, &options.fpu_zerodiv, init_boolean, show_boolean,
"Raise a floating point exception when dividing by zero."},
{"GFORTRAN_FPU_OVERFLOW", 0, &options.fpu_overflow, init_boolean,
show_boolean,
"Raise a floating point exception on overflow."},
{"GFORTRAN_FPU_UNDERFLOW", 0, &options.fpu_underflow, init_boolean,
show_boolean,
"Raise a floating point exception on underflow."},
{"GFORTRAN_FPU_PRECISION", 0, &options.fpu_precision_loss, init_boolean,
show_boolean,
"Raise a floating point exception on precision loss."},
{NULL}
};
void
init_variables (void)
{
variable *v;
for (v = variable_table; v->name; v++)
v->init (v);
}
int
check_buffered (int n)
{
char name[40];
variable v;
int rv;
if (options.all_unbuffered)
return 0;
strcpy (name, "GFORTRAN_UNBUFFERED_");
strcat (name, gfc_itoa (n));
v.name = name;
v.value = 2;
v.var = &rv;
init_boolean (&v);
return rv;
}
void
show_variables (void)
{
variable *v;
int n;
st_printf ("GNU Fortran 95 runtime library version "
"UNKNOWN" "\n\n");
st_printf ("Environment variables:\n");
st_printf ("----------------------\n");
for (v = variable_table; v->name; v++)
{
n = st_printf ("%s", v->name);
print_spaces (25 - n);
if (v->show == show_integer)
st_printf ("Integer ");
else if (v->show == show_boolean)
st_printf ("Boolean ");
else
st_printf ("String ");
v->show (v);
st_printf ("%s\n\n", v->desc);
}
st_printf ("\nRuntime error codes:");
st_printf ("\n--------------------\n");
for (n = ERROR_FIRST + 1; n < ERROR_LAST; n++)
if (n < 0 || n > 9)
st_printf ("%d %s\n", n, translate_error (n));
else
st_printf (" %d %s\n", n, translate_error (n));
st_printf ("\nCommand line arguments:\n");
st_printf (" --help Print this list\n");
sys_exit (0);
}