mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-01 07:59:05 +08:00
9c53d54fe3
git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@477 d0cd1f9f-072b-0410-8dd7-cf729c803f20
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
/* -*-C-*-
|
|
********************************************************************************
|
|
*
|
|
* File: cutil.c
|
|
* Description: General utility functions
|
|
* Author: Mark Seaman, SW Productivity
|
|
* Created: Fri Oct 16 14:37:00 1987
|
|
* Modified: Wed Jun 6 16:29:17 1990 (Mark Seaman) marks@hpgrlt
|
|
* Language: C
|
|
* Package: N/A
|
|
* Status: Reusable Software Component
|
|
*
|
|
* (c) Copyright 1987, Hewlett-Packard Company.
|
|
** Licensed under the Apache License, Version 2.0 (the "License");
|
|
** you may not use this file except in compliance with the License.
|
|
** You may obtain a copy of the License at
|
|
** http://www.apache.org/licenses/LICENSE-2.0
|
|
** Unless required by applicable law or agreed to in writing, software
|
|
** distributed under the License is distributed on an "AS IS" BASIS,
|
|
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
** See the License for the specific language governing permissions and
|
|
** limitations under the License.
|
|
*
|
|
********************************************************************************
|
|
Revision 1.1 2007/02/02 23:39:07 theraysmith
|
|
Fixed portability issues
|
|
|
|
Revision 1.1.1.1 2004/02/20 19:39:06 slumos
|
|
Import original HP distribution
|
|
|
|
* Revision 1.3 90/03/06 15:39:10 15:39:10 marks (Mark Seaman)
|
|
* Look for correct file of <malloc.h> or <stdlib.h>
|
|
*
|
|
* Revision 1.2 90/01/15 13:02:13 13:02:13 marks (Mark Seaman)
|
|
* Added memory allocator (*allocate) and (*deallocate)
|
|
*
|
|
* Revision 1.1 89/10/09 14:58:29 14:58:29 marks (Mark Seaman)
|
|
* Initial revision
|
|
**/
|
|
|
|
#include "cutil.h"
|
|
#include "tprintf.h"
|
|
#include "callcpp.h"
|
|
|
|
#include <stdlib.h>
|
|
|
|
#define RESET_COUNT 2000
|
|
|
|
/**********************************************************************
|
|
* long_rand
|
|
*
|
|
* Return a long random number whose value is less than limit. Do this
|
|
* by calling the standard cheepo random number generator and reseting
|
|
* it pretty often.
|
|
**********************************************************************/
|
|
long long_rand(long limit) {
|
|
#if RAND_MAX < 0x1000000
|
|
static long seed;
|
|
|
|
long num;
|
|
num = (long) rand () << 16;
|
|
num |= rand () & 0xffff;
|
|
seed ^= num;
|
|
long result = num % limit;
|
|
while (result < 0) {
|
|
result += limit;
|
|
}
|
|
return result;
|
|
#else
|
|
return (long)((double)limit * rand()/(RAND_MAX + 1.0));
|
|
#endif
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* open_file
|
|
*
|
|
* Open a file for reading or writing. If the file name parameter is
|
|
* NULL use stdin (or stdout) for the file. If the file can not be
|
|
* opened then call the error routine.
|
|
**********************************************************************/
|
|
FILE *open_file(const char *filename, const char *mode) {
|
|
FILE *thisfile = NULL;
|
|
if ((thisfile = fopen (filename, mode)) == NULL) {
|
|
tprintf ("Could not open file, %s\n", filename);
|
|
exit (1);
|
|
}
|
|
return (thisfile);
|
|
}
|
|
|
|
/// Check whether the file exists
|
|
bool exists_file(const char *filename) {
|
|
bool exists = false;
|
|
FILE *f = NULL;
|
|
if ((f = fopen(filename, "r")) != NULL) {
|
|
fclose(f);
|
|
exists = true;
|
|
}
|
|
return exists;
|
|
}
|