X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Funinorm.h;h=206ee40683eb4f10dfea962d9b4c3efd02c25e9e;hb=969fe755730d23ba7ff21ae7511f66067d0a94d8;hp=07ecacc1fba388af87156b14c55829f5803228cc;hpb=6302a18148305e57a1464e7be5ac47d0bf2e02f2;p=gnulib.git

diff --git a/lib/uninorm.h b/lib/uninorm.h
index 07ecacc1f..206ee4068 100644
--- a/lib/uninorm.h
+++ b/lib/uninorm.h
@@ -1,5 +1,5 @@
 /* Normalization forms (composition and decomposition) of Unicode strings.
-   Copyright (C) 2001-2002, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2009-2010 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify it
@@ -132,17 +132,67 @@ extern const struct unicode_normalization_form uninorm_nfkc;
 #define uninorm_is_composing(nf) \
   ((* (const unsigned int *) (nf) >> 1) & 1)
 
+/* Return the decomposing variant of a normalization form.
+   This maps NFC,NFD -> NFD and NFKC,NFKD -> NFKD.  */
+extern uninorm_t uninorm_decomposing_form (uninorm_t nf);
+
 
 /* Return the specified normalization form of a string.  */
 extern uint8_t *
        u8_normalize (uninorm_t nf, const uint8_t *s, size_t n,
-		     uint8_t *resultbuf, size_t *lengthp);
+                     uint8_t *resultbuf, size_t *lengthp);
 extern uint16_t *
        u16_normalize (uninorm_t nf, const uint16_t *s, size_t n,
-		      uint16_t *resultbuf, size_t *lengthp);
+                      uint16_t *resultbuf, size_t *lengthp);
 extern uint32_t *
        u32_normalize (uninorm_t nf, const uint32_t *s, size_t n,
-		      uint32_t *resultbuf, size_t *lengthp);
+                      uint32_t *resultbuf, size_t *lengthp);
+
+
+/* Compare S1 and S2, ignoring differences in normalization.
+   NF must be either UNINORM_NFD or UNINORM_NFKD.
+   If successful, set *RESULTP to -1 if S1 < S2, 0 if S1 = S2, 1 if S1 > S2, and
+   return 0.  Upon failure, return -1 with errno set.  */
+extern int
+       u8_normcmp (const uint8_t *s1, size_t n1, const uint8_t *s2, size_t n2,
+                   uninorm_t nf, int *resultp);
+extern int
+       u16_normcmp (const uint16_t *s1, size_t n1, const uint16_t *s2, size_t n2,
+                    uninorm_t nf, int *resultp);
+extern int
+       u32_normcmp (const uint32_t *s1, size_t n1, const uint32_t *s2, size_t n2,
+                    uninorm_t nf, int *resultp);
+
+
+/* Converts the string S of length N to a NUL-terminated byte sequence, in such
+   a way that comparing uN_normxfrm (S1) and uN_normxfrm (S2) with uN_cmp2() is
+   equivalent to comparing S1 and S2 with uN_normcoll().
+   NF must be either UNINORM_NFC or UNINORM_NFKC.  */
+extern char *
+       u8_normxfrm (const uint8_t *s, size_t n, uninorm_t nf,
+                    char *resultbuf, size_t *lengthp);
+extern char *
+       u16_normxfrm (const uint16_t *s, size_t n, uninorm_t nf,
+                     char *resultbuf, size_t *lengthp);
+extern char *
+       u32_normxfrm (const uint32_t *s, size_t n, uninorm_t nf,
+                     char *resultbuf, size_t *lengthp);
+
+
+/* Compare S1 and S2, ignoring differences in normalization, using the
+   collation rules of the current locale.
+   NF must be either UNINORM_NFC or UNINORM_NFKC.
+   If successful, set *RESULTP to -1 if S1 < S2, 0 if S1 = S2, 1 if S1 > S2, and
+   return 0.  Upon failure, return -1 with errno set.  */
+extern int
+       u8_normcoll (const uint8_t *s1, size_t n1, const uint8_t *s2, size_t n2,
+                    uninorm_t nf, int *resultp);
+extern int
+       u16_normcoll (const uint16_t *s1, size_t n1, const uint16_t *s2, size_t n2,
+                     uninorm_t nf, int *resultp);
+extern int
+       u32_normcoll (const uint32_t *s1, size_t n1, const uint32_t *s2, size_t n2,
+                     uninorm_t nf, int *resultp);
 
 
 /* Normalization of a stream of Unicode characters.
@@ -163,8 +213,8 @@ struct uninorm_filter;
    Return the new filter, or NULL with errno set upon failure.  */
 extern struct uninorm_filter *
        uninorm_filter_create (uninorm_t nf,
-			      int (*stream_func) (void *stream_data, ucs4_t uc),
-			      void *stream_data);
+                              int (*stream_func) (void *stream_data, ucs4_t uc),
+                              void *stream_data);
 
 /* Stuff a Unicode character into a normalizing filter.
    Return 0 if successful, or -1 with errno set upon failure.  */