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/*=============================================================================
This file is part of FLINT.
FLINT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FLINT 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2010 Sebastian Pancratz
******************************************************************************/
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpz_poly.h"
#if !defined (__WIN32) || defined(__CYGWIN__)
/*
The function fdopen is declared in stdio.h. It is POSIX.1 compliant,
but not ANSI compliant. The following line enables compilation with
the "-ansi" flag.
*/
extern FILE * fdopen(int fildes, const char *mode);
int main(void)
{
int i, j, n = 1000, result;
FILE *in, *out;
int fd[2];
pid_t childpid;
FLINT_TEST_INIT(state);
flint_printf("print/ read_pretty....");
fflush(stdout);
/* Randomise n polynomials, write to and read from a pipe */
{
fmpz_poly_t *a;
char *var = "x";
a = flint_malloc(n * sizeof(fmpz_poly_t));
for (i = 0; i < n; i++)
{
fmpz_poly_init(a[i]);
fmpz_poly_randtest(a[i], state, 100, 100);
}
if (pipe(fd))
{
flint_printf("FAIL:\n");
flint_printf("Failed to set-up the pipe.\n");
abort();
}
if((childpid = fork()) == -1)
{
flint_printf("FAIL:\n");
flint_printf("Failed to fork the process.\n");
abort();
}
if(childpid == 0) /* Child process */
{
int r;
close(fd[0]);
out = fdopen(fd[1], "w");
if (out == NULL)
{
flint_printf("FAIL:\n");
flint_printf("Could not open output file at the pipe.\n");
abort();
}
for (j = 0; j < n; j++)
{
r = fmpz_poly_fprint_pretty(out, a[j], var);
if ((j < n - 1) && (r > 0))
r = flint_fprintf(out, "\n");
if (r <= 0)
{
flint_printf("FAIL:\n");
flint_printf("Write error.\n");
abort();
}
}
fclose(out);
exit(0);
}
else /* Parent process */
{
int r;
fmpz_poly_t t;
char *rvar;
close(fd[1]);
in = fdopen(fd[0], "r");
if (in == NULL)
{
flint_printf("FAIL:\n");
flint_printf("Could not open input file at the pipe.\n");
abort();
}
fmpz_poly_init(t);
i = 0;
while (!feof(in))
{
r = fmpz_poly_fread_pretty(in, t, &rvar);
if (r <= 0)
{
flint_printf("FAIL:\n");
flint_printf("Read error.\n");
abort();
}
result = fmpz_poly_equal(t, a[i]) &&
(t->length <= 1 || (strcmp(var, rvar) == 0));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a[i] = "), fmpz_poly_print_pretty(a[i], var), flint_printf("\n");
flint_printf("t = "), fmpz_poly_print_pretty(t, rvar), flint_printf("\n");
flint_printf("rvar = %s\n", rvar);
abort();
}
flint_free(rvar);
++i;
}
fmpz_poly_clear(t);
fclose(in);
}
if (i != n)
{
flint_printf("FAIL:\n");
flint_printf("Only %d out of %d objects were processed.\n", i, n);
abort();
}
for (i = 0; i < n; i++)
fmpz_poly_clear(a[i]);
flint_free(a);
}
/* Write "blah" to the pipe and see it read as a variable */
{
char str[5] = {'b', 'l', 'a', 'h', '\0'};
if (pipe(fd))
{
flint_printf("FAIL:\n");
flint_printf("Failed to set-up the pipe.\n");
abort();
}
if((childpid = fork()) == -1)
{
flint_printf("FAIL:\n");
flint_printf("Failed to fork the process.\n");
abort();
}
if(childpid == 0) /* Child process */
{
int r;
close(fd[0]);
out = fdopen(fd[1], "w");
if (out == NULL)
{
flint_printf("FAIL:\n");
flint_printf("Could not open output file at the pipe.\n");
abort();
}
r = fputs(str, out);
if (r == EOF)
{
flint_printf("FAIL:\n");
flint_printf("Write error.\n");
abort();
}
fclose(out);
exit(0);
}
else /* Parent process */
{
char *rvar = NULL;
int r;
fmpz_poly_t t;
close(fd[1]);
in = fdopen(fd[0], "r");
if (in == NULL)
{
flint_printf("FAIL:\n");
flint_printf("Could not open input file at the pipe.\n");
abort();
}
fmpz_poly_init(t);
while (!feof(in))
{
r = fmpz_poly_fread_pretty(in, t, &rvar);
result = (r > 0) && rvar && (strcmp(str, rvar) == 0) &&
(t->length == 2) && (t->coeffs[0] == WORD(0)) &&
(t->coeffs[1] == WORD(1));
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("r = %d\n", r);
flint_printf("str = {%s}\n", str);
flint_printf("rvar = {%s}\n", rvar);
flint_printf("t = "), fmpz_poly_print(t), flint_printf("\n");
abort();
}
if (rvar)
flint_free(rvar);
}
fmpz_poly_clear(t);
fclose(in);
}
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return EXIT_SUCCESS;
}
#else
int main(void)
{
flint_printf("print/ read....");
fflush(stdout);
flint_printf("SKIPPED\n");
return EXIT_SUCCESS;
}
#endif
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