100 lines
1.7 KiB
C
Executable file
100 lines
1.7 KiB
C
Executable file
/* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
|
|
See the file COPYING for copying permission.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
#ifdef __WATCOMC__
|
|
#ifndef __LINUX__
|
|
#include <io.h>
|
|
#else
|
|
#include <unistd.h>
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef __BEOS__
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#ifndef S_ISREG
|
|
#ifndef S_IFREG
|
|
#define S_IFREG _S_IFREG
|
|
#endif
|
|
#ifndef S_IFMT
|
|
#define S_IFMT _S_IFMT
|
|
#endif
|
|
#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
|
|
#endif /* not S_ISREG */
|
|
|
|
#ifndef O_BINARY
|
|
#ifdef _O_BINARY
|
|
#define O_BINARY _O_BINARY
|
|
#else
|
|
#define O_BINARY 0
|
|
#endif
|
|
#endif
|
|
|
|
#include "filemap.h"
|
|
|
|
int
|
|
filemap(const char *name,
|
|
void (*processor)(const void *, size_t, const char *, void *arg),
|
|
void *arg)
|
|
{
|
|
size_t nbytes;
|
|
int fd;
|
|
int n;
|
|
struct stat sb;
|
|
void *p;
|
|
|
|
fd = open(name, O_RDONLY|O_BINARY);
|
|
if (fd < 0) {
|
|
perror(name);
|
|
return 0;
|
|
}
|
|
if (fstat(fd, &sb) < 0) {
|
|
perror(name);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
if (!S_ISREG(sb.st_mode)) {
|
|
fprintf(stderr, "%s: not a regular file\n", name);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
nbytes = sb.st_size;
|
|
/* malloc will return NULL with nbytes == 0, handle files with size 0 */
|
|
if (nbytes == 0) {
|
|
static const char c = '\0';
|
|
processor(&c, 0, name, arg);
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
p = malloc(nbytes);
|
|
if (!p) {
|
|
fprintf(stderr, "%s: out of memory\n", name);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
n = read(fd, p, nbytes);
|
|
if (n < 0) {
|
|
perror(name);
|
|
free(p);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
if (n != nbytes) {
|
|
fprintf(stderr, "%s: read unexpected number of bytes\n", name);
|
|
free(p);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
processor(p, nbytes, name, arg);
|
|
free(p);
|
|
close(fd);
|
|
return 1;
|
|
}
|