1 files changed, 88 insertions, 0 deletions
diff --git a/pd/src/s_utf8.h b/pd/src/s_utf8.h
new file mode 100644
index 00000000..56c40d48
--- /dev/null
+++ b/pd/src/s_utf8.h
@@ -0,0 +1,88 @@
+#ifndef S_UTF8_H
+#define S_UTF8_H
+
+/*--moo--*/
+#ifndef u_int32_t
+# define u_int32_t unsigned int
+#endif
+
+#ifndef UCS4
+# define UCS4 u_int32_t
+#endif
+
+/* UTF8_SUPPORT_FULL_UCS4
+ *  define this to support the full potential range of UCS-4 codepoints
+ *  (in anticipation of a future UTF-8 standard)
+ */
+/*#define UTF8_SUPPORT_FULL_UCS4 1*/
+#undef UTF8_SUPPORT_FULL_UCS4
+
+/* UTF8_MAXBYTES
+ *   maximum number of bytes required to represent a single character in UTF-8
+ *
+ * UTF8_MAXBYTES1 = UTF8_MAXBYTES+1 
+ *  maximum bytes per character including NUL terminator
+ */
+#ifdef UTF8_SUPPORT_FULL_UCS4
+# ifndef UTF8_MAXBYTES
+#  define UTF8_MAXBYTES  6
+# endif
+# ifndef UTF8_MAXBYTES1
+#  define UTF8_MAXBYTES1 7
+# endif
+#else
+# ifndef UTF8_MAXBYTES
+#  define UTF8_MAXBYTES  4
+# endif
+# ifndef UTF8_MAXBYTES1
+#  define UTF8_MAXBYTES1 5
+# endif
+#endif
+/*--/moo--*/
+
+/* is c the start of a utf8 sequence? */
+#define isutf(c) (((c)&0xC0)!=0x80)
+
+/* convert UTF-8 data to wide character */
+int u8_toucs(u_int32_t *dest, int sz, char *src, int srcsz);
+
+/* the opposite conversion */
+int u8_toutf8(char *dest, int sz, u_int32_t *src, int srcsz);
+
+/* moo: get byte length of character number, or 0 if not supported */
+int u8_wc_nbytes(u_int32_t ch);
+
+/* moo: compute required storage for UTF-8 encoding of 's[0..n-1]' */
+int u8_wcs_nbytes(u_int32_t *ucs, int size);
+
+/* single character to UTF-8, no NUL termination */
+int u8_wc_toutf8(char *dest, u_int32_t ch);
+
+/* moo: single character to UTF-8, with NUL termination */
+int u8_wc_toutf8_nul(char *dest, u_int32_t ch);
+
+/* character number to byte offset */
+int u8_offset(char *str, int charnum);
+
+/* byte offset to character number */
+int u8_charnum(char *s, int offset);
+
+/* return next character, updating an index variable */
+u_int32_t u8_nextchar(char *s, int *i);
+
+/* move to next character */
+void u8_inc(char *s, int *i);
+
+/* move to previous character */
+void u8_dec(char *s, int *i);
+
+/* moo: move pointer to next character */
+void u8_inc_ptr(char **sp);
+
+/* moo: move pointer to previous character */
+void u8_dec_ptr(char **sp);
+
+/* returns length of next utf-8 sequence */
+int u8_seqlen(char *s);
+
+#endif /* S_UTF8_H */