add ls n do a bunch more shit

.gitignore

@@ -0,0 +1 @@
+bin/*

Makefile

@@ -15,7 +15,7 @@ endif
 CC_FLAGS := ${CC_FLAGS} -I/opt/webos-sdk-x86_64/1.0.g/sysroots/armv7a-neon-webos-linux-gnueabi/usr/include --sysroot=/opt/webos-sdk-x86_64/1.0.g/sysroots/armv7a-neon-webos-linux-gnueabi
 endif
 ifndef PROGS
-PROGS := whoami arch
+PROGS := whoami arch ls
 endif
 make:
 	mkdir -p bin

src/arch.c

@@ -5,16 +5,13 @@
 #include <sys/utsname.h>
 
 /*
-whoami - prints the working user's username (unless --uid is specified)
+arch - prints the current machine's architecture
 Available arguments:
 	--help: show this help message
 	--version: show the version of the program (WIP)
-	--uid: print the users numeric UID, instead of username
 */
 
 int main(int argc, char** argv) {
-	uid_t userid = geteuid();
-	char * username = getpwuid(userid)->pw_name;
 	if (argc == 1) {
 		struct utsname e;
 		uname(&e);

src/ls.c

@@ -0,0 +1,107 @@
+#include <stdio.h>
+#include <stdbool.h> 
+#include <unistd.h>
+#include <dirent.h>
+#include <limits.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+/*
+ls - print all files and directories in working directory
+Available arguments:
+	--help: show this help message
+	--version: show the version of the program (WIP)
+*/
+//https://stackoverflow.com/questions/4770985/how-to-check-if-a-string-starts-with-another-string-in-c/4770992#4770992
+bool startsWithChar(const char *pre, const char str) {
+	char *e;
+	int index;
+	e = strchr(pre, str);
+	index = (int)(e - pre);
+	return index == 0;
+}
+
+int cmp(const void *a, const void *b){
+    return strcmp(*(const char **)a, *(const char **)b);
+}
+
+//lots o' code ~~stolen~~ borrowed from https://pubs.opengroup.org/onlinepubs/9699919799/functions/readdir.html
+int main(int argc, char** argv) {
+	bool colour = false;
+	bool showdot = false;
+	bool specpath = false;
+	char *thatpath;
+	for (int i = 1; i < argc; i++) {
+		char* arg = argv[i];
+		/*printf(arg);
+		printf(" ");*/
+		if (!strcmp(arg, "--help")) {
+			char* help = 
+				"Drake's Epic Coreutils (working title)\n"
+				"ls - print all files and directories in working directory\n"
+				"Available arguments:\n"
+				"	--help: show this help message\n"
+				"	--version: show the version of the program (WIP)\n"
+				"	--color: colour the output depending on whether there is a file or folder\n"
+				"	--colour: same as --color, but for our Bri'ish folks";
+			printf("%s\n", help);
+			return 0;
+		} else if (!strcmp(arg, "--version")) {
+			printf("6.9.69\n");
+			return 0;
+		} else if (!strcmp(arg, "--color") || !strcmp(arg, "--colour")) {
+			colour = true;
+		} else if (!strcmp(arg, "-a") || !strcmp(arg, "--all")) {
+			showdot = true;
+		} else {
+			//TODO: interpret absolute *and* relative paths. can't be that hard, right?
+			specpath = true;
+			thatpath = arg;
+		}
+	}
+	//printf("%s\n", specpath ? "true" : "false");
+	char wd[PATH_MAX];
+	if (specpath == false) {
+		//printf("e\n");
+		getcwd(wd, sizeof(wd));
+	} else if (specpath == true) {
+		//printf("f\n");
+		strcpy(wd, realpath(thatpath, NULL));
+	}
+	//printf(wd);
+	DIR* dirp;
+	struct dirent *dp;
+	dirp = opendir(wd);
+	if (dirp == NULL) {
+		printf("couldn't open %s\n", wd);
+		return 1;
+	}
+	int len = 2;
+	char* out = (char*) malloc(len);
+	dp = readdir(dirp);
+	do {
+		char* dirname = dp->d_name;
+		if (!startsWithChar(dirname, '.') || showdot == true) {
+			len += 1 + strlen(dirname) + strlen(" ");
+			out = (char*) realloc(out, len);
+			strcat(out, dirname);
+			strcat(out, " ");
+		}
+	} while ((dp = readdir(dirp)) != NULL);
+	char *word, *words[strlen(out)/2+1];
+	int i,n;
+	i=0;
+	word = strtok(out, " ");
+	while (word != NULL) {
+		words[i++] = word;
+		word = strtok(NULL, " ");
+	}
+	n = i;
+	qsort(words, n, sizeof(*words), cmp);
+	for (i = 0; i < n; i++) {
+		printf(words[i]);
+		printf(" ");
+	}
+	return 0;
+}