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#include "BuffIO.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
@implementation BuffIO
-init: (const char *)fileName
{
struct stat sb;
int confFd;
confFd = open(fileName, O_RDONLY, 0);
if (confFd == -1) {
fprintf(stderr, "ERROR: couldn't open config file %s: %s.\n",
fileName, strerror(errno));
return nil;
}
if (fstat(confFd, &sb) == -1) {
fprintf(stderr, "ERROR: couldn't stat config file %s: %s.\n",
fileName, strerror(errno));
return nil;
}
fileLen = sb.st_size;
file = mmap(NULL, fileLen, PROT_READ, MAP_PRIVATE, confFd, 0);
if (file == MAP_FAILED) {
fprintf(stderr, "ERROR: couldn't mmap config file %s: %s.\n",
fileName, strerror(errno));
return nil;
}
close(confFd);
curOff = file;
EOL = '\n';
return self;
}
-free
{
munmap(file, fileLen);
return [super free];
}
-(char *)
getCurOff
{
return curOff;
}
-(off_t)
getLength
{
return fileLen;
}
-setEOL: (char)delim
{
EOL = delim;
return self;
}
@end
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