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-rw-r--r--src/osd/strconv.cpp141
1 files changed, 141 insertions, 0 deletions
diff --git a/src/osd/strconv.cpp b/src/osd/strconv.cpp
new file mode 100644
index 00000000000..3eedf040127
--- /dev/null
+++ b/src/osd/strconv.cpp
@@ -0,0 +1,141 @@
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
+//============================================================
+//
+// strconv.c - Win32 string conversion
+//
+//============================================================
+
+#if defined(SDLMAME_WIN32) || defined(OSD_WINDOWS)
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+
+// MAMEOS headers
+#include "strconv.h"
+#include "unicode.h"
+
+#if defined(SDLMAME_WIN32) || defined(OSD_WINDOWS)
+//============================================================
+// astring_from_utf8
+//============================================================
+
+CHAR *astring_from_utf8(const char *utf8string)
+{
+ WCHAR *wstring;
+ int char_count;
+ CHAR *result;
+
+ // convert MAME string (UTF-8) to UTF-16
+ char_count = MultiByteToWideChar(CP_UTF8, 0, utf8string, -1, NULL, 0);
+ wstring = (WCHAR *)alloca(char_count * sizeof(*wstring));
+ MultiByteToWideChar(CP_UTF8, 0, utf8string, -1, wstring, char_count);
+
+ // convert UTF-16 to "ANSI code page" string
+ char_count = WideCharToMultiByte(CP_ACP, 0, wstring, -1, NULL, 0, NULL, NULL);
+ result = (CHAR *)osd_malloc_array(char_count * sizeof(*result));
+ if (result != NULL)
+ WideCharToMultiByte(CP_ACP, 0, wstring, -1, result, char_count, NULL, NULL);
+
+ return result;
+}
+
+
+//============================================================
+// utf8_from_astring
+//============================================================
+
+char *utf8_from_astring(const CHAR *astring)
+{
+ WCHAR *wstring;
+ int char_count;
+ CHAR *result;
+
+ // convert "ANSI code page" string to UTF-16
+ char_count = MultiByteToWideChar(CP_ACP, 0, astring, -1, NULL, 0);
+ wstring = (WCHAR *)alloca(char_count * sizeof(*wstring));
+ MultiByteToWideChar(CP_ACP, 0, astring, -1, wstring, char_count);
+
+ // convert UTF-16 to MAME string (UTF-8)
+ char_count = WideCharToMultiByte(CP_UTF8, 0, wstring, -1, NULL, 0, NULL, NULL);
+ result = (CHAR *)osd_malloc_array(char_count * sizeof(*result));
+ if (result != NULL)
+ WideCharToMultiByte(CP_UTF8, 0, wstring, -1, result, char_count, NULL, NULL);
+
+ return result;
+}
+
+
+//============================================================
+// wstring_from_utf8
+//============================================================
+
+WCHAR *wstring_from_utf8(const char *utf8string)
+{
+ int char_count;
+ WCHAR *result;
+
+ // convert MAME string (UTF-8) to UTF-16
+ char_count = MultiByteToWideChar(CP_UTF8, 0, utf8string, -1, NULL, 0);
+ result = (WCHAR *)osd_malloc_array(char_count * sizeof(*result));
+ if (result != NULL)
+ MultiByteToWideChar(CP_UTF8, 0, utf8string, -1, result, char_count);
+
+ return result;
+}
+
+
+//============================================================
+// utf8_from_wstring
+//============================================================
+
+char *utf8_from_wstring(const WCHAR *wstring)
+{
+ int char_count;
+ char *result;
+
+ // convert UTF-16 to MAME string (UTF-8)
+ char_count = WideCharToMultiByte(CP_UTF8, 0, wstring, -1, NULL, 0, NULL, NULL);
+ result = (char *)osd_malloc_array(char_count * sizeof(*result));
+ if (result != NULL)
+ WideCharToMultiByte(CP_UTF8, 0, wstring, -1, result, char_count, NULL, NULL);
+
+ return result;
+}
+
+//============================================================
+// osd_uchar_from_osdchar
+//============================================================
+
+int osd_uchar_from_osdchar(UINT32 *uchar, const char *osdchar, size_t count)
+{
+ WCHAR wch;
+
+ count = MIN(count, IsDBCSLeadByte(*osdchar) ? 2 : 1);
+ if (MultiByteToWideChar(CP_ACP, 0, osdchar, (DWORD)count, &wch, 1) != 0)
+ *uchar = wch;
+ else
+ *uchar = 0;
+ return (int) count;
+}
+
+#else
+
+//============================================================
+// osd_uchar_from_osdchar
+//============================================================
+
+int osd_uchar_from_osdchar(unicode_char *uchar, const char *osdchar, size_t count)
+{
+ wchar_t wch;
+
+ count = mbstowcs(&wch, (char *)osdchar, 1);
+ if (count != -1)
+ *uchar = wch;
+ else
+ *uchar = 0;
+
+ return count;
+}
+
+#endif