Big update

src/basic/basic.h

@@ -758,7 +758,11 @@ String16 ToString16(Allocator allocator, String string);
 wchar_t *ToWidechar(Allocator allocator, String string);
 int64_t  WideLength(wchar_t *string);
 void     NormalizePathInPlace(String s);
-
+String   ChopLastSlash(String s);
+String   ChopLastPeriod(String s);
+String   SkipToLastSlash(String s);
+String   SkipToLastPeriod(String s);
+String   Copy(Allocator allocator, String string);
 /*
     Hash table implementation:
         Pointers to values

src/basic/filesystem.h

@@ -19,15 +19,20 @@ struct FileIter {
 };
 
 String   ReadFile(Allocator arena, String path);
+bool     WriteFile(String path, String data);
 String   GetAbsolutePath(Allocator arena, String relative);
 bool     IsValid(const FileIter &it);
 void     Advance(FileIter *it);
 FileIter IterateFiles(Allocator allocator, String path);
 bool     InitOS();
 
+String GetExePath(Allocator allocator);
+String GetExeDir(Allocator allocator);
+
 struct Process {
-    bool is_valid;
-    char platform[32];
+    bool   is_valid;
+    String error_message;
+    char   platform[32];
 };
 
 Process RunEx(String cmd);

src/basic/win32.cpp

@@ -59,8 +59,8 @@ Process RunEx(String args) {
                       NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&lpMsgBuf, 0, NULL);
         LocalFree(lpMsgBuf);
 
-        printf("Failed to create process \ncmd: %.*s\nwindows_message: %s", FmtString(args), (char *)lpMsgBuf);
-        Assert(!"Failed to create process");
+        // @warning: leak! but we don't care
+        result.error_message = Format(GetSystemAllocator(), "Failed to create process | message: %s | cmd: %.*s", (char *)lpMsgBuf, FmtString(args));
     }
     return result;
 }
@@ -228,4 +228,45 @@ double get_time_in_micros(void) {
     clock_gettime(CLOCK_MONOTONIC, &spec);
     return (((double)spec.tv_sec) * 1000000) + (((double)spec.tv_nsec) / 1000);
 }
-#endif
+#endif
+
+bool WriteFile(String path, String data) {
+    bool    result = false;
+    wchar_t wpath[1024];
+    CreateWidecharFromChar(wpath, Lengthof(wpath), path.data, path.len);
+
+    DWORD  access               = GENERIC_WRITE;
+    DWORD  creation_disposition = CREATE_ALWAYS;
+    HANDLE handle               = CreateFileW(wpath, access, 0, NULL, creation_disposition, FILE_ATTRIBUTE_NORMAL, NULL);
+    if (handle != INVALID_HANDLE_VALUE) {
+        DWORD bytes_written = 0;
+        Assert(data.len == (DWORD)data.len); // @Todo: can only read 32 byte size files?
+        BOOL error = WriteFile(handle, data.data, (DWORD)data.len, &bytes_written, NULL);
+        if (error == TRUE) {
+            if (bytes_written == data.len) {
+                result = true;
+            }
+        }
+        CloseHandle(handle);
+    }
+
+    return result;
+}
+
+String GetExePath(Allocator allocator) {
+    wchar_t wbuffer[1024];
+    DWORD   wsize = GetModuleFileNameW(0, wbuffer, Lengthof(wbuffer));
+    Assert(wsize != 0);
+
+    String path = ToString(allocator, wbuffer, wsize);
+    NormalizePathInPlace(path);
+    return path;
+}
+
+String GetExeDir(Allocator allocator) {
+    Scratch scratch;
+    String  path = GetExePath(scratch);
+    path         = ChopLastSlash(path);
+    path         = Copy(allocator, path);
+    return path;
+}