158 lines
2.1 KiB
C
158 lines
2.1 KiB
C
/* Copyright (C) GCK
|
|
*
|
|
* This file is part of gcklib
|
|
*
|
|
* This project and file is licensed under the BSD-3-Clause licence.
|
|
* <https://opensource.org/licence/bsd-3-clause>
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdarg.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include "err.h"
|
|
|
|
#include "fs.h"
|
|
|
|
char *fs_read(const char *path)
|
|
{
|
|
FILE *fptr = fopen(path, "r");
|
|
if (!fptr)
|
|
return NULL;
|
|
|
|
size_t cap = 1024;
|
|
size_t len = 0;
|
|
char *buf = malloc(cap);
|
|
if (!buf) {
|
|
fclose(fptr);
|
|
return NULL;
|
|
}
|
|
|
|
int c;
|
|
while ((c = fgetc(fptr)) != EOF) {
|
|
if (len + 1 >= cap) {
|
|
cap *= 2;
|
|
char *tmp = realloc(buf, cap);
|
|
if (!tmp) {
|
|
free(buf);
|
|
fclose(fptr);
|
|
return NULL;
|
|
}
|
|
buf = tmp;
|
|
}
|
|
buf[len++] = (char)c;
|
|
}
|
|
buf[len] = '\0';
|
|
|
|
fclose(fptr);
|
|
return buf;
|
|
}
|
|
|
|
bool fs_exists(const char *path)
|
|
{
|
|
FILE *fptr;
|
|
bool exists;
|
|
|
|
fptr = fopen(path, "r");
|
|
if (fptr) {
|
|
exists = true;
|
|
} else {
|
|
exists = false;
|
|
}
|
|
|
|
return exists;
|
|
}
|
|
|
|
int fs_append(const char *path, const char *format, ...)
|
|
{
|
|
FILE *fp = fopen(path, "a");
|
|
if (!fp)
|
|
return -1;
|
|
|
|
va_list ap;
|
|
va_start(ap, format);
|
|
int ret = vfprintf(fp, format, ap);
|
|
va_end(ap);
|
|
|
|
if (ret < 0) {
|
|
fclose(fp);
|
|
return -1;
|
|
}
|
|
|
|
if (fclose(fp) != 0)
|
|
return -1;
|
|
|
|
return ret;
|
|
}
|
|
|
|
int fs_del(const char *path)
|
|
{
|
|
return remove(path);
|
|
}
|
|
|
|
int fs_new(const char *path)
|
|
{
|
|
size_t len;
|
|
int fd;
|
|
|
|
if (path == NULL) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
len = strlen(path);
|
|
if (len == 0) {
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
if (path[len - 1] == '/') {
|
|
if (mkdir(path, 0777) == -1)
|
|
return -1;
|
|
} else {
|
|
fd = open(path, O_CREAT | O_EXCL | O_WRONLY, 0666);
|
|
if (fd == -1)
|
|
return -1;
|
|
close(fd);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int fs_write(const char *path, const char *format, ...)
|
|
{
|
|
FILE *fptr = fopen(path, "w");
|
|
if (!fptr)
|
|
return -1;
|
|
|
|
va_list ap;
|
|
va_start(ap, format);
|
|
int ret = vfprintf(fptr, format, ap);
|
|
va_end(ap);
|
|
|
|
if (ret < 0) {
|
|
fclose(fptr);
|
|
return -1;
|
|
}
|
|
|
|
if (fclose(fptr) != 0)
|
|
return -1;
|
|
|
|
return ret;
|
|
}
|
|
|
|
FILE *fs_temp()
|
|
{
|
|
FILE *fptr = tmpfile();
|
|
|
|
if (!fptr) {
|
|
errorf("tmpfile failed");
|
|
return NULL;
|
|
}
|
|
|
|
return fptr;
|
|
}
|