From ae71a09d376d4b435e2290cda48dffa96d54b16b Mon Sep 17 00:00:00 2001
From: mrb0nk500 <b0nk@b0nk.xyz>
Date: Sun, 31 Jul 2022 17:43:23 -0300
Subject: misc: Add `is_dir()`, and `mkdirp()`

`is_dir()` checks if the supplied path is a directory, and returns 1 if
it's a directory, 0 if it isn't a directory, and -1 if it doesn't exist.

`mkdirp()` works like `mkdir()` except that it also creates parent
directories if needed.
---
 misc.c | 36 ++++++++++++++++++++++++++++++++++++
 misc.h |  2 ++
 2 files changed, 38 insertions(+)

diff --git a/misc.c b/misc.c
index 97333eb..4c0cab0 100644
--- a/misc.c
+++ b/misc.c
@@ -1,8 +1,11 @@
 #include <ctype.h>
+#include <dirent.h>
 #include <string.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/stat.h>
+#include <unistd.h>
 #include "misc.h"
 
 char *read_file(const char *filename, long *size) {
@@ -206,3 +209,36 @@ int format_len(const char *fmt, ...) {
 	va_end(args);
 	return len;
 }
+
+int is_dir(const char *path) {
+	DIR *dir;
+
+	if (!access(path, F_OK)) {
+		if ((dir = opendir(path)) != NULL) {
+			closedir(dir);
+			return 1;
+		} else {
+			return 0;
+		}
+	} else {
+		return -1;
+	}
+}
+
+void mkdirp(const char *path, int mode) {
+	char *str = make_str(path);
+
+	for (char *p = find_delm(str, "/", *str == '/'); !is_empty(p); p = find_delm(p, "/", 1)) {
+		if (*p == '/') {
+			*p = '\0';
+		}
+		if (is_dir(str) < 0 && mkdir(str, mode) < 0) {
+			break;
+		}
+		if (*p == '\0') {
+			*p = '/';
+		}
+	}
+
+	free(str);
+}
diff --git a/misc.h b/misc.h
index 0ad5fba..3a653e2 100644
--- a/misc.h
+++ b/misc.h
@@ -17,4 +17,6 @@ extern char *create_num_str(const char *str, int num);
 extern int is_empty(const char *str);
 extern char *skip_whitespace(const char *str);
 extern int format_len(const char *fmt, ...);
+extern int is_dir(const char *path);
+extern void mkdirp(const char *path, int mode);
 #endif
-- 
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