From 5e35cb6721954197beb8ffc6bdc0fceb05463e1e Mon Sep 17 00:00:00 2001
From: timerix <timerix11@gmail.com>
Date: Fri, 28 Oct 2022 11:57:43 +0600
Subject: [PATCH] path_concat

---
 src/Filesystem/filesystem.c | 38 +++++++++++++++++++++++++++++++++++++
 src/Filesystem/filesystem.h | 22 +++++++++++++++++++++
 2 files changed, 60 insertions(+)
 create mode 100644 src/Filesystem/filesystem.c
 create mode 100644 src/Filesystem/filesystem.h

diff --git a/src/Filesystem/filesystem.c b/src/Filesystem/filesystem.c
new file mode 100644
index 0000000..fe535da
--- /dev/null
+++ b/src/Filesystem/filesystem.c
@@ -0,0 +1,38 @@
+#include "filesystem.h"
+
+char* __path_concat(uint16 n, char* prev_part, ...){
+    char** parts=(char**)malloc(n*sizeof(char*));
+    uint32* lengths=malloc(n*sizeof(uint32));
+    uint32 totalLength=0;
+
+    // reading args from va_list
+    va_list vl;
+    va_start(vl, prev_part);
+    for(uint16 i=0; i<n; i++){
+        char* part=va_arg(vl,char*);
+        int16 length=cptr_length(part);
+        parts[i]=part;
+        lengths[i]=length;
+        totalLength+=length;
+    }
+    va_end(vl);
+
+    // allocating memory for output value
+    char* totality=malloc(totalLength+1);
+    const char* output=totality;
+    totality[totalLength]=0;
+    
+    // copying content of all strings to rezult
+    uint16 k=0;
+    for(; k<n-1; k++){
+        memcopy(parts[k], totality, lengths[k]);
+        totality+=lengths[k];
+        *totality=path_sep;
+        totality++;
+    }
+    memcopy(parts[k], totality, lengths[k]);
+
+    free(parts);
+    free(lengths);
+    return output;
+}
diff --git a/src/Filesystem/filesystem.h b/src/Filesystem/filesystem.h
new file mode 100644
index 0000000..2bdd4cb
--- /dev/null
+++ b/src/Filesystem/filesystem.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#if __cplusplus
+extern "C" {
+#endif
+
+#include "std.h"
+
+#if defined(_WIN32) || defined (_WIN64)
+static const char path_sep='\\';
+#else
+static const char path_sep='/';
+#endif
+
+char* __path_concat(uint16 n, char* path_start, ...);
+#define path_concat(PATH_PARTS) __path_concat(count_args(PATH_PARTS), PATH_PARTS)
+
+
+
+#if __cplusplus
+}
+#endif
\ No newline at end of file