Загрузить файлы в «coreutils»

coreutils/clear.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main(void) {
+	puts("\033c");
+	return 0;
+}

coreutils/cp.c

@@ -0,0 +1,140 @@
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <libgen.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <sys/stat.h>
+
+int write_to_file(const char *src, const char *dst) {
+	int ifd = open(src, O_RDONLY);
+	if (ifd < 0)
+		return 1;
+
+	int ofd = open(dst, O_CREAT | O_TRUNC | O_WRONLY, 0666);
+	if (ofd < 0) {
+		close(ifd);
+		return 1;
+	}
+
+	char buf[4096];
+	ssize_t len = 0;
+	while ((len = read(ifd, buf, sizeof(buf))))
+		write(ofd, buf, len);
+
+	close(ifd);
+	close(ofd);
+	return 0;
+}
+
+int copyf(const char *src, const char *dst) {
+	char *copy = strdup(src);
+	if (!copy)
+		return 1;
+
+	char *bname = basename(copy);
+	char *new_path = malloc(strlen(dst) + strlen(bname) + 1);
+	if (!new_path)
+		return 1;
+
+	sprintf(new_path, "%s/%s", dst, bname);
+
+	int ret = write_to_file(src, new_path);
+
+	free(new_path);
+	free(copy);
+
+	return ret;
+}
+
+int copy(const char *src, const char *dst){
+	if (write_to_file(src, dst)) {
+		if (copyf(src, dst)) {
+			fprintf(stderr, "cp: (%s %s) %s\n", src, dst, strerror(errno));
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+int get_stat(const char *path, struct stat *stat_path) {
+	if (stat(path, stat_path)) {
+		fprintf(stderr, "cp: unable to stat %s: %s\n", path, strerror(errno));
+		return 1;
+	}
+
+	return 0;
+}
+
+int cptree(const char *src, const char *dst) {
+
+	struct stat stat_path;
+	get_stat(src, &stat_path);
+
+	if (S_ISDIR(stat_path.st_mode) == 0) {
+		if (copy(src, dst)) {
+			fprintf(stderr, "cp: %s: is not directory\n", src);
+			return -1;
+		}
+
+		return 0;
+	}
+
+	DIR *dir = opendir(src);
+	if (dir == NULL) {
+		fprintf(stderr, "cp: %s: Can`t open directory\n", src);
+		return -1;
+        }
+
+	struct dirent *ep;
+	while ((ep = readdir(dir)) != NULL) {
+		if (!strcmp(ep->d_name, ".") || !strcmp(ep->d_name, ".."))
+			continue;
+
+		size_t len = strlen(src) + strlen(ep->d_name) + 2;
+		char *full_path = malloc(len + 1);
+		if (full_path == NULL) {
+			fprintf(stderr, "rm: malloc() returned NULL\n");
+			return 1;
+		}
+
+		snprintf(full_path, len, "%s/%s", src, ep->d_name);
+
+		copy(full_path, dst);
+		free(full_path);
+	}
+
+	closedir(dir);
+	return 0;
+}
+
+int main(const int argc, const char **argv) {
+	/* Recursion */
+	unsigned int r_flag;
+
+	int i;
+	for (i = 1; i < argc; i++) {
+		if (argv[i][0] != '-')
+			break;
+
+		else if (!strcmp(argv[i], "-r"))
+			r_flag = 1;
+
+		else if (!strcmp(argv[i], "-h")) {
+			printf("cp [-r] [Src] [Dst]\n");
+			return 0;
+		}
+	}
+
+	if (argc - i >= 2) {
+		if (r_flag)
+			return cptree(argv[i], argv[argc - 1]);
+		else
+			return copy(argv[i], argv[argc - 1]);
+	}
+
+	return 0;
+}