dynamically get $PATH for package manager scan

src/main.c

@@ -15,8 +15,6 @@
 
 #define MAX(a, b) ((a) > (b) ? (a) : (b))
 
-static const char* pac_mans[] = PAC_MANS;
-
 /// Gets the size of the current terminal window.
 ///
 /// @param width
@@ -115,22 +113,8 @@ int main(int argc, char** argv) {
 
 	mem_unit = unit_from_power(e, base_1024);
 
-	DIR* dir = opendir("/bin");
-
-	if (dir) {
-		struct dirent* dirent;
-		unsigned int prev_pac = 0 - 1;
-
-		while ((dirent = readdir(dir))) {
-			for (unsigned int i = 0; i < sizeof(pac_mans) / sizeof(*pac_mans); i++) {
-				if (!strcmp(dirent->d_name, pac_mans[i]) && i < prev_pac) {
-					pac_man = pac_mans[i];
-					prev_pac = i;
-				}
-			}
-		}
-	}
-
+	pac_man = get_pac_man();
+
 	// Currently excludes memory and storage
 	longest_entry_len = MAX(
 		MAX(

src/pac_man.c

@@ -0,0 +1,60 @@
+// Copyright (c) 2023 Evan Overman (https://an-prata.it). Licensed under the MIT License.
+// See LICENSE file in repository root for complete license text.
+
+#include <dirent.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "pac_man.h"
+
+static const char* pac_mans[] = PAC_MANS;
+
+static char* get_sub_str(char* str, char delim, size_t len) {
+	for (unsigned int i = 0; i < len; i++) {
+		if (!str[i]) {
+			if (i + 1 < len) {
+				str = &str[i + 1];
+				len -= i;
+				i = 0;
+			}
+
+			continue;
+		}
+
+		if (str[i] == delim) {
+			str[i] = '\0';
+			puts(str);
+			return str;
+		}
+	}
+
+			puts(str);
+	return NULL;
+}
+
+const char* get_pac_man() {
+	const char* pac_man, * current_dir;
+	char* path = getenv("PATH");
+	size_t path_len = strlen(path);
+
+	while ((current_dir = get_sub_str(path, ':', path_len))) {
+		DIR* dir = opendir(current_dir);
+
+		if (dir) {
+			struct dirent* dirent;
+			unsigned int prev_pac = 0 - 1;
+
+			while ((dirent = readdir(dir))) {
+				for (unsigned int i = 0; i < sizeof(pac_mans) / sizeof(*pac_mans); i++) {
+					if (!strcmp(dirent->d_name, pac_mans[i]) && i < prev_pac) {
+						pac_man = pac_mans[i];
+						prev_pac = i;
+					}
+				}
+			}
+		}
+	}
+
+	return pac_man;
+}

src/pac_man.h

@@ -12,4 +12,6 @@
 	"apt" \
 }
 
+const char* get_pac_man();
+
 #endif // PAC_MAN_H