- added a FileReader wrapper for kopen4load.

Needed when transitioning the hightile loader to GZDoom's texture loader.

source/build/include/cache1d.h

@@ -10,6 +10,7 @@
 #define cache1d_h_
 
 #include "compat.h"
+#include "files.h"
 
 #include "vfs.h"
 
@@ -151,5 +152,55 @@ extern int32_t lz4CompressionLevel;
 int32_t kdfread_LZ4(void *buffer, int dasizeof, int count, buildvfs_kfd fil);
 void dfwrite_LZ4(const void *buffer, int dasizeof, int count, buildvfs_FILE fil);
 
+class KFileReaderInterface : public FileReaderInterface
+{
+	buildvfs_kfd khandle = buildvfs_kfd_invalid;
+public:
+
+	KFileReaderInterface(int handle)
+	{
+		khandle = handle;
+		Length = 0;
+		if (khandle != buildvfs_kfd_invalid)
+		{
+			klseek(khandle, 0, SEEK_END);
+			Length = ktell(khandle);
+			klseek(khandle, 0, SEEK_SET);
+		}
+	}
+	~KFileReaderInterface() 
+	{
+		if (khandle != buildvfs_kfd_invalid)
+		{
+			kclose(khandle);
+		}
+	}
+	virtual long Tell() const
+	{
+		return ktell(khandle);
+	}
+	virtual long Seek(long offset, int origin)
+	{
+		return klseek(khandle, offset, origin);
+	}
+	virtual long Read(void* buffer, long len)
+	{
+		return kread(khandle, buffer, (int32_t)len);
+	}
+	virtual char* Gets(char* strbuf, int len)
+	{
+		// Not supported by the underlying system, so we do not need it anyway.
+		return nullptr;
+	}
+
+};
+
+inline FileReader kopenFileReader(const char* name, int where)
+{
+	int handle = where == 0 ? kopen4loadfrommod(name, 0) : kopen4load(name, where);
+	KFileReaderInterface *fri = handle == buildvfs_kfd_invalid? nullptr : new KFileReaderInterface(handle);
+	return FileReader(fri);
+}
+
 #endif // cache1d_h_
 

source/build/src/scriptfile.cpp

@@ -301,16 +301,15 @@ void scriptfile_preparse(scriptfile *sf, char *tx, int32_t flen)
 
 scriptfile *scriptfile_fromfile(const char *fn)
 {
-    buildvfs_kfd fp = kopen4load(fn, 0);
-    if (fp == buildvfs_kfd_invalid) return nullptr;
+	auto fr = kopenFileReader(fn, 0);
+	if (!fr.isOpen()) return nullptr;
 
-    uint32_t flen = kfilelength(fp);
+	uint32_t flen = fr.GetLength();
     char *   tx   = (char *)Xmalloc(flen + 2);
 
     scriptfile *sf = (scriptfile *)Xmalloc(sizeof(scriptfile));
 
-    kread(fp, tx, flen);
-    kclose(fp);
+	fr.Read(tx, flen);
 
     tx[flen] = tx[flen+1] = 0;
 

source/common/utility/files.h

@@ -123,12 +123,13 @@ class FileReader
 	FileReader(const FileReader &r) = delete;
 	FileReader &operator=(const FileReader &r) = delete;
 
+public:
+
 	explicit FileReader(FileReaderInterface *r)
 	{
 		mReader = r;
 	}
 
-public:
 	enum ESeek
 	{
 		SeekSet = SEEK_SET,