toaruos/apps/cp.c

75 lines
1.4 KiB
C

/* This file is part of ToaruOS and is released under the terms
* of the NCSA / University of Illinois License - see LICENSE.md
* Copyright (C) 2013 K. Lange
* Copyright (C) 2013 Tyler Bindon
*/
/*
* cp
*/
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <stdio.h>
#define CHUNK_SIZE 4096
int main(int argc, char ** argv) {
FILE * fd;
FILE * fout;
if (argc < 3) {
fprintf(stderr, "usage: %s [source] [destination]\n", argv[0]);
return 1;
}
fd = fopen(argv[1], "r");
if (!fd) {
fprintf(stderr, "%s: %s: no such file or directory\n", argv[0], argv[1]);
return 1;
}
struct stat statbuf;
stat(argv[2], &statbuf);
if (S_ISDIR(statbuf.st_mode)) {
char *filename = strrchr(argv[1], '/');
if (!filename) {
filename = argv[1];
}
char *target_path = malloc((strlen(argv[2]) + strlen(filename) + 2) * sizeof(char));
sprintf(target_path, "%s/%s", argv[2], filename );
fout = fopen( target_path, "w" );
free(target_path);
} else {
fout = fopen( argv[2], "w" );
}
size_t length;
fseek(fd, 0, SEEK_END);
length = ftell(fd);
fseek(fd, 0, SEEK_SET);
char buf[CHUNK_SIZE];
while (length > CHUNK_SIZE) {
fread( buf, 1, CHUNK_SIZE, fd);
fwrite(buf, 1, CHUNK_SIZE, fout);
length -= CHUNK_SIZE;
}
if (length > 0) {
fread( buf, 1, length, fd);
fwrite(buf, 1, length, fout);
}
fclose(fd);
fclose(fout);
return 0;
}
/*
* vim:tabstop=4
* vim:noexpandtab
* vim:shiftwidth=4
*/