split add

TODO

@@ -5,8 +5,6 @@ tail
 expr
 uniq
 od
-split
-date
 tr
 cut
 shuf
@@ -17,9 +15,10 @@ stat
 sort
 test
 tar
+sha*
+md5
 
 Other:
- *mount
  ps
  sysctl
  ping
@@ -41,7 +40,6 @@ Loginutils:
  addgroup
  deluser
  passwd
- login
  delgroup
  getty
 

config.h

@@ -1,7 +1,7 @@
 #ifndef _CONFIG_H
 #define _CONFIG_H
 
-/* (cat tee wc xargs rev) */
+/* (cat tee wc xargs rev split) */
 #define BUF_SIZE 4096
 
 /* Random source (shred) */

src/coreutils/date/date.c

@@ -72,7 +72,7 @@ int main(int argc, char **argv) {
 				break;
 
 			default:
-				printf("date\n\t[-s DATE Set new date]\n\t[-d DATE Print new date]\n\t[-u Work in UTC]\n");
+				printf("date [+\"fmt\"]\n\t[-s DATE Set new date]\n\t[-d DATE Print new date]\n\t[-u Work in UTC]\n");
 				printf("\nFormats:\n");
 				for (size_t i = 0; i < sizeof(fmts) / sizeof(char *); i++)
 					printf("\t%s\n", fmts[i]);

src/coreutils/ls/ls.c

@@ -303,7 +303,7 @@ int sortd(const void *p1, const void *p2) {
 	struct d_node *l1 = *(struct d_node **)p1;
 	struct d_node *l2 = *(struct d_node **)p2;
 
-	return strlen(l1->name) - strlen(l2->name);
+	return l2->name[1] - l1->name[0];
 }
 
 int ls(const char *dir_name, int label, struct winsize w) {

src/coreutils/split/build.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+project_dir=$(pwd)
+echo ./*.c $CFLAGS -o $OUTPUT$(basename $project_dir) | xargs $CC

src/coreutils/split/split.c

@@ -0,0 +1,117 @@
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include "config.h"
+
+FILE *next_file(FILE *old, int x, int slen, char *prefix) {
+	if (old != NULL)
+		fclose(old);
+
+	/* Gen file name */
+	char name[BUF_SIZE + 1];
+	int len = snprintf(name, sizeof(name), "%s", prefix);
+
+	for (int i = slen; i >= 0; i--) {
+		if (len + i >= (int)(BUF_SIZE * sizeof(char)))
+			break;
+
+		name[len + i] = 'a' + (x % 26);
+		x /= 26;
+	}
+
+	/* Open file */
+	FILE *fp = fopen(name, "w");
+	if (fp == NULL) {
+		fprintf(stderr, "split: %s\n", strerror(errno));
+		return NULL;
+	}
+
+	return fp;
+}
+
+int main(int argc, char **argv) {
+	off_t size = 0;
+	int a_flag = 1;
+	int b_flag = 0;
+	char *prefix = "x";
+
+	int opt;
+	while ((opt = getopt(argc, argv, "l:a:b:")) != -1) {
+		switch (opt) {
+			case 'a':
+				a_flag = atoi(optarg);
+				break;
+
+			case 'l':
+				size = atoi(optarg);
+				break;
+
+			case 'b':
+				switch (optarg[strlen(optarg) - 1]) {
+					case 'm':
+						size = atoi(optarg) * 1048576;
+						break;
+
+					case 'k':
+						size = atoi(optarg) * 1024;
+						break;
+
+					default:
+						size = atoi(optarg);
+						break;
+				}
+
+				b_flag = 1;
+				break;
+
+			default:
+				printf("split [file1]\n\t[-l N Split by N lines]\n\t[-a N Use N letters as prefix]\n\t[-b N[k|m] Split by N (kilo|mega)bytes]\n");
+				return 0;
+		}
+	}
+
+	argv += optind;
+	argc -= optind;
+
+	FILE *fp = stdin;
+	if (argv[0] != NULL && strcmp(argv[0], "-")) {
+		fp = fopen(argv[0], "r");
+		if (fp == NULL) {
+			fprintf(stderr, "split: %s: %s\n", argv[0], strerror(errno));
+			return 1;
+		}
+	}
+
+	if (argc == 2 && argv[1] != NULL)
+		prefix = argv[1];
+
+
+	int ret = 0;
+	int files = 0;
+	FILE *out = NULL;
+
+	off_t n = 0;
+	int ch;
+	while ((ch = getc(fp)) != EOF) {
+		if (out == NULL || n >= size) {
+			out = next_file(out, files++, a_flag, prefix);
+			if (out == NULL) {
+				ret = 1;
+				break;
+			}
+
+			n = 0;
+		}
+
+		if (ch == '\n' || b_flag)
+			n++;
+
+		putc(ch, out);
+	}
+
+	fclose(fp);
+	return ret;
+}