Initial community commit

Src/replicant/nx/win/NXZipFile.cpp

@@ -0,0 +1,209 @@
+#include "NXFileObject.h"
+#include <new>
+#include "minizip/unzip.h"
+#include <nx/nxfile.h>
+#include <assert.h>
+
+class NXZipFile : NXFileObject
+{
+public:
+	NXZipFile(unzFile zip_file);
+	~NXZipFile();
+
+	/* NXFileObject implementation */
+	ns_error_t Read(void *buffer, size_t bytes_requested, size_t *bytes_read);
+	ns_error_t Write(const void *buffer, size_t bytes);
+	ns_error_t Seek(uint64_t position);
+	ns_error_t Tell(uint64_t *position);
+	ns_error_t PeekByte(uint8_t *byte);
+	ns_error_t Sync();
+	ns_error_t Truncate();
+	// TODO(benski) implementation EOF
+	// TODO(benski) implement region locking
+private:
+	unzFile zip_file;
+};
+
+NXZipFile::NXZipFile(unzFile zip_file) : zip_file(zip_file)
+{
+}
+
+NXZipFile::~NXZipFile()
+{
+	if (zip_file) {
+		unzCloseCurrentFile(zip_file);
+		unzClose(zip_file);
+		zip_file=0;
+	}
+}
+
+/* NXFileObject implementation */
+ns_error_t NXZipFile::Read(void *buffer, size_t bytes_requested, size_t *bytes_read)
+{
+	int zret = unzReadCurrentFile(zip_file, buffer, (unsigned int)bytes_requested);
+	if (zret == 0) {
+		if (bytes_read) {
+			*bytes_read = 0;
+		}
+		return NErr_EndOfFile;
+	} else if (zret > 0) {
+		if (bytes_read) {
+			*bytes_read = (size_t)zret;
+		}
+		return NErr_Success;
+	} else {
+		if (bytes_read) {
+			*bytes_read = 0;
+		}
+		return NErr_Error;
+	}
+}
+
+ns_error_t NXZipFile::Write(const void *buffer, size_t bytes)
+{
+	return NErr_NotImplemented;
+}
+
+ns_error_t NXZipFile::Seek(uint64_t position)
+{
+	// TODO(benski) error check)
+	unzSetOffset64(zip_file, position);
+	return NErr_Success;
+}
+
+ns_error_t NXZipFile::Tell(uint64_t *position)
+{
+	*position = unzGetOffset64(zip_file);
+	return NErr_Success;
+}
+
+ns_error_t NXZipFile::PeekByte(uint8_t *byte)
+{
+	return NErr_NotImplemented;
+}
+
+ns_error_t NXZipFile::Sync()
+{
+	return NErr_NotImplemented;
+}
+
+ns_error_t NXZipFile::Truncate()
+{
+	return NErr_NotImplemented;
+}
+
+static voidpf ZCALLBACK unzip_nxfile_open OF((voidpf opaque, const void*  filename, int mode))
+{
+	nx_file_t f;
+	if (NXFileOpenFile(&f, (nx_uri_t)filename, nx_file_FILE_read_binary) != NErr_Success) {
+		return 0;
+	}
+	return f;
+}
+
+static uLong ZCALLBACK unzip_nxfile_read OF((voidpf opaque, voidpf stream, void* buf, uLong size))
+{
+	nx_file_t f = (nx_file_t)stream;
+	size_t bytes_read;
+	if (NXFileRead(f, buf, size, &bytes_read) != NErr_Success) {
+		return 0;
+	}
+	return (uLong)bytes_read;
+}
+
+static int ZCALLBACK unzip_nxfile_close OF((voidpf opaque, voidpf stream))
+{
+	NXFileRelease((nx_file_t)stream);
+	return 0;
+}
+
+
+static ZPOS64_T ZCALLBACK unzip_nxfile_tell OF((voidpf opaque, voidpf stream))
+{
+	nx_file_t f = (nx_file_t)stream;
+	uint64_t position;
+	if (NXFileTell(f, &position) == NErr_Success) {
+		return (int64_t)position;
+	} else {
+		return -1;
+	}
+}
+
+static long ZCALLBACK unzip_nxfile_seek OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int whence))
+{
+		nx_file_t f = (nx_file_t)stream;
+	uint64_t position;
+	if (whence == SEEK_SET) {
+		position = offset;
+	} else if (whence == SEEK_CUR) {
+		ns_error_t err = NXFileTell(f, &position);
+		if (err != NErr_Success) {
+			return -1;
+		}
+		position += offset;
+	} else if (whence == SEEK_END) {
+		uint64_t length;
+		NXFileLength(f, &length);
+		position = length + offset;
+	} else {
+		return -1;
+	}
+	ns_error_t err = NXFileSeek(f, position);
+	if (err == NErr_Success) {
+		return 0;
+	} else {
+		return -1;
+	}
+}
+#if 0
+    open64_file_func    zopen64_file;
+    read_file_func      zread_file;
+    write_file_func     zwrite_file;
+    tell64_file_func    ztell64_file;
+    seek64_file_func    zseek64_file;
+    close_file_func     zclose_file;
+    testerror_file_func zerror_file;
+#endif
+
+ns_error_t NXFileOpenZip(nx_file_t *out_file, nx_uri_t filename, nx_string_t extension_hint)
+{
+#if 0
+	typedef struct zlib_filefunc_def_s
+{
+    open_file_func      zopen_file;
+    read_file_func      zread_file;
+    write_file_func     zwrite_file;
+    tell_file_func      ztell_file;
+    seek_file_func      zseek_file;
+    close_file_func     zclose_file;
+    testerror_file_func zerror_file;
+    voidpf              opaque;
+} zlib_filefunc_def;
+#endif
+
+	zlib_filefunc64_def file_func = {0, };
+	file_func.zopen64_file = unzip_nxfile_open;
+		file_func.zread_file = unzip_nxfile_read;
+		file_func.ztell64_file = unzip_nxfile_tell;
+		file_func.zseek64_file = unzip_nxfile_seek;
+		file_func.zclose_file = unzip_nxfile_close;
+
+	unzFile zip_file = unzOpen2_64(filename, &file_func);
+	if (zip_file == NULL) {
+		return NErr_Error;
+	}
+
+	unzGoToFirstFile(zip_file);
+	// TODO(benski): look for filename with extension_hint as extension
+	// TODO(benski): search for anything with extension
+	unzOpenCurrentFile(zip_file);
+
+	NXZipFile *nx_zip_file = new (std::nothrow) NXZipFile(zip_file);
+	if (!nx_zip_file) {
+		unzCloseCurrentFile(zip_file);
+		unzClose(zip_file);
+		return NErr_OutOfMemory;
+	}
+	*out_file = (nx_file_t)nx_zip_file;
+	return NErr_Success;
+}