Changeset 3667

Timestamp:

2003-01-13T20:12:09+13:00 (21 years ago)

Author:

jrm21

Message:

added a utf16 output converter class.

Location:

trunk/gsdl/lib

Files:

• gsdlunicode.cpp (modified) (1 diff)
• gsdlunicode.h (modified) (2 diffs)

trunk/gsdl/lib/gsdlunicode.cpp

@@ -90 +90 @@
 
 
+// this works for all unicode values < 65536...
+void utf16outconvertclass::convert (char *out, size_t maxlen, size_t &len, status_t &status) {
+  // we should already have text_t* input set...
+  if (input == NULL || out == NULL)
+  {
+    status = finished;
+    return;
+  }
+  unsigned char *output = (unsigned char *)out;
+  text_t::iterator textend = input->end();
+  len = 0;
+  if (maxlen % 2) maxlen--; // we need an even number of output bytes...
+  while ((len < maxlen) && (texthere != textend)) {
+    unsigned short int uni_char=(unsigned short int) *texthere;
+    // big endian utf-16...
+    if (uni_char < 256) {
+      out[len]=0;   
+      out[len+1]=uni_char;
+    } else {
+      out[len]=uni_char >> 8;
+      out[len+1]=uni_char & 255;
+    }
+    len+=2;
+    ++texthere;
+  }
+  if (texthere==textend)
+    status=finished;
+  else
+    status=unfinished;
+}
+
 
 utf8inconvertclass::utf8inconvertclass () {

trunk/gsdl/lib/gsdlunicode.h

@@ -39 +39 @@
 // encoded text_t string
 text_t to_uni (const text_t &in);
-
-
 
 #define MAXUTF8CHARLEN 3
@@ -78 +76 @@
 };
 
+// utf16 is almost the same as unicode, except for unicode values > 65535.
+class utf16outconvertclass : public rzwsoutconvertclass {
+public:
+  utf16outconvertclass () {};
+  void convert (char *out, size_t maxlen, size_t &len, status_t &status);
+};
+
 
 // Convert from a text_t class to a utf-8 char stream