new file for unicode convert

src/libmdb/iconv.c

@@ -0,0 +1,65 @@
+/* MDB Tools - A library for reading MS Access database files
+ * Copyright (C) 2000 Brian Bruns
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "mdbtools.h"
+
+#ifdef DMALLOC
+#include "dmalloc.h"
+#endif
+
+int
+mdb_unicode2ascii(MdbHandle *mdb, unsigned char *buf, int offset, int len, char *dest)
+{
+	int i;
+
+	if (buf[offset]==0xff && buf[offset+1]==0xfe) {
+		strncpy(dest, &buf[offset+2], len-2);
+		dest[len-2]='\0';
+	} else {
+		/* convert unicode to ascii, rather sloppily */
+		for (i=0;i<len;i+=2)
+			dest[i/2] = buf[offset + i];
+		dest[len/2]='\0';
+	}
+	return len;
+}
+
+int
+mdb_ascii2unicode(MdbHandle *mdb, unsigned char *buf, int offset, int len, char *dest)
+{
+	int i = 0;
+
+	if (IS_JET3(mdb)) {
+		strncpy(dest, &buf[offset], len);
+		dest[len]='\0';
+		return strlen(dest);
+	}
+
+	while (i<strlen(&buf[offset]) && (i*2+2)<len) {
+		dest[i*2] = buf[offset+i];
+		dest[i*2+1] = 0;
+		i++;
+	}
+	/* NULL */
+	dest[i*2] = 0;
+	dest[i*2+1] = 0;
+	i++;
+
+	return (i*2);
+}