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/*************************************************************************\
*
* Package: MyLib
* File: util.c
* Environment: ANSI C
*
* Copyright (c) 2002 Pierre L'Ecuyer, DIRO, Université de Montréal.
* e-mail: lecuyer@iro.umontreal.ca
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted without a fee for private, research,
* academic, or other non-commercial purposes.
* Any use of this software in a commercial environment requires a
* written licence from the copyright owner.
*
* Any changes made to this package must be clearly identified as such.
*
* In scientific publications which used this software, a reference to it
* would be appreciated.
*
* Redistributions of source code must retain this copyright notice
* and the following disclaimer.
*
* THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
\*************************************************************************/
#include "util.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#define MAXCAR 256 /* Max length of a line of data */
/************************************************************************/
lebool util_Freadable (const char *path)
{
#ifdef HAVE_ACCESS
return (path)?((access(path, (F_OK | R_OK)))?FALSE:TRUE):FALSE;
#else
if (path != NULL) {
FILE *f;
f = fopen (path, "r");
if (f != NULL) {
fclose (f);
return TRUE;
}
else
return FALSE;
}
else
return FALSE;
#endif
}
FILE *util_Fopen (const char *path, const char *mode)
{
FILE *f;
errno = 0;
f = fopen (path, mode);
if (f == NULL) {
fprintf (stdout, "\nOpening of %s failed: %s\n\n",
path, strerror (errno));
exit (EXIT_FAILURE);
return NULL; /* to eliminate a warning from the compiler */
} else
return f;
}
int util_Fclose (FILE * f)
{
int s;
if (f == NULL)
return 0;
errno = 0;
s = fclose (f);
if (s != 0)
fprintf (stdout, "\nClosing of file failed: %s\n\n", strerror (errno));
return s;
}
/************************************************************************/
void *util_Malloc (size_t size)
{
void *p;
errno = 0;
p = malloc (size);
if (p == NULL) {
fprintf (stdout, "\nmalloc failed: %s\n\n", strerror (errno));
exit (EXIT_FAILURE);
return NULL; /* to eliminate a warning from the compiler */
} else
return p;
}
void *util_Calloc (size_t count, size_t esize)
{
void *p;
errno = 0;
p = calloc (count, esize);
if (p == NULL) {
fprintf (stdout, "\ncalloc failed: %s\n\n", strerror (errno));
exit (EXIT_FAILURE);
return NULL; /* to eliminate a warning from the compiler */
} else
return p;
}
void *util_Realloc (void *ptr, size_t size)
{
void *p;
errno = 0;
p = realloc (ptr, size);
if ((p == NULL) && (size != 0)) {
fprintf (stdout, "\nrealloc failed: %s\n\n", strerror (errno));
exit (EXIT_FAILURE);
return ptr; /* to eliminate a warning from the compiler */
} else
return p;
}
void *util_Free (void *p)
{
if (p == NULL)
return NULL;
free (p);
return NULL;
}
/************************************************************************/
void util_WriteBool (lebool b, int d)
{
if (b)
printf ("%*s", d, "TRUE");
else
printf ("%*s", d, "FALSE");
}
void util_ReadBool (char S[], lebool *x)
{
int j;
char B[6];
j = sscanf (S, " %6s", B);
util_Assert (j > 0, "util_ReadBool: on reading lebool");
if (!strncmp (B, "TRUE", (size_t) 5))
*x = TRUE;
else if (!strncmp (B, "FALSE", (size_t) 6))
*x = FALSE;
else {
util_Error ("util_ReadBool: lebool values must be TRUE or FALSE");
}
}
/************************************************************************/
int util_GetLine (FILE *infile, char *Line, char c)
{
size_t j;
while (NULL != fgets (Line, MAXCAR, infile)) { /* Not EOF and no error */
/* Find first non-white character in Line */
j = strspn (Line, " \t\r\f\v");
/* Discard blank lines and lines whose first non-white character is c */
if (Line[j] == '\n' || Line[j] == c)
continue;
else {
char *p;
/* If the character c appears, delete the rest of the line*/
if ((p = strchr (Line, c)))
*p = '\0';
else {
/* Remove the \n char at the end of line */
j = strlen (Line);
if (Line[j - 1] == '\n')
Line[j - 1] = '\0';
}
return 0;
}
}
util_Fclose (infile);
return -1;
/* util_Error ("GetLine: an error has occurred on reading"); */
}
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