From b3fde419e6fe3f750b9a34b0dfe2c5348f557f77 Mon Sep 17 00:00:00 2001
From: Elias Aebi <eyelash@users.noreply.github.com>
Date: Wed, 18 Sep 2024 10:41:58 +0200
Subject: [PATCH] gral_get_current_working_directory

---
 demos/file.c     | 10 ++++++++++
 gral.h           |  1 +
 gral_linux.c     |  4 ++++
 gral_macos.m     |  4 ++++
 gral_windows.cpp | 10 ++++++++++
 5 files changed, 29 insertions(+)

diff --git a/demos/file.c b/demos/file.c
index 787d85d..ee62d61 100644
--- a/demos/file.c
+++ b/demos/file.c
@@ -1,6 +1,7 @@
 #include <gral.h>
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h>
 
 static void command_cat(int argc, char **argv) {
 	if (argc < 3) {
@@ -39,6 +40,12 @@ static void command_mkdir(int argc, char **argv) {
 	gral_directory_create(argv[2]);
 }
 
+static void command_pwd(int argc, char **argv) {
+	char *current_working_directory = gral_get_current_working_directory();
+	printf("%s\n", current_working_directory);
+	free(current_working_directory);
+}
+
 static void command_rm(int argc, char **argv) {
 	if (argc < 3) {
 		printf("missing argument\n");
@@ -86,6 +93,9 @@ int main(int argc, char **argv) {
 	else if (strcmp(argv[1], "mkdir") == 0) {
 		command_mkdir(argc, argv);
 	}
+	else if (strcmp(argv[1], "pwd") == 0) {
+		command_pwd(argc, argv);
+	}
 	else if (strcmp(argv[1], "rm") == 0) {
 		command_rm(argc, argv);
 	}
diff --git a/gral.h b/gral.h
index 0dd51c5..6ff2002 100644
--- a/gral.h
+++ b/gral.h
@@ -195,6 +195,7 @@ void gral_file_remove(char const *path);
 void gral_directory_create(char const *path);
 void gral_directory_iterate(char const *path, void (*callback)(char const *name, void *user_data), void *user_data);
 void gral_directory_remove(char const *path);
+char *gral_get_current_working_directory(void);
 struct gral_directory_watcher *gral_directory_watch(char const *path, void (*callback)(void *user_data), void *user_data);
 void gral_directory_watcher_delete(struct gral_directory_watcher *directory_watcher);
 
diff --git a/gral_linux.c b/gral_linux.c
index 4555165..a554f74 100644
--- a/gral_linux.c
+++ b/gral_linux.c
@@ -778,6 +778,10 @@ void gral_directory_remove(char const *path) {
 	rmdir(path);
 }
 
+char *gral_get_current_working_directory(void) {
+	return getcwd(NULL, 0);
+}
+
 typedef struct {
 	void (*callback)(void *user_data);
 	void *user_data;
diff --git a/gral_macos.m b/gral_macos.m
index 67f54af..cccd376 100644
--- a/gral_macos.m
+++ b/gral_macos.m
@@ -794,6 +794,10 @@ void gral_directory_remove(char const *path) {
 	rmdir(path);
 }
 
+char *gral_get_current_working_directory(void) {
+	return getcwd(NULL, 0);
+}
+
 @interface GralDirectoryWatcher: GralCallbackObject {
 @public
 	int fd;
diff --git a/gral_windows.cpp b/gral_windows.cpp
index 3132d4a..88b9739 100644
--- a/gral_windows.cpp
+++ b/gral_windows.cpp
@@ -1191,6 +1191,16 @@ void gral_directory_remove(char const *path) {
 	RemoveDirectory(utf8_to_utf16(path));
 }
 
+char *gral_get_current_working_directory() {
+	DWORD utf16_length = GetCurrentDirectory(0, NULL);
+	Buffer<wchar_t> utf16_buffer(utf16_length);
+	GetCurrentDirectory(utf16_length, utf16_buffer);
+	int utf8_length = WideCharToMultiByte(CP_UTF8, 0, utf16_buffer, utf16_length, NULL, 0, NULL, NULL);
+	char *utf8_buffer = (char *)malloc(utf8_length);
+	WideCharToMultiByte(CP_UTF8, 0, utf16_buffer, utf16_length, utf8_buffer, utf8_length, NULL, NULL);
+	return utf8_buffer;
+}
+
 struct gral_directory_watcher {
 	HANDLE directory;
 	OVERLAPPED overlapped;