return (size_t)(t - s);
}
+/** @brief Return the @ref unidata structure for code point @p c
+ *
+ * @p c can be any 32-bit value, a sensible value will be returned regardless.
+ */
+static const struct unidata *utf32__unidata(uint32_t c) {
+ if(c < UNICODE_NCHARS)
+ return &unidata[c / UNICODE_MODULUS][c % UNICODE_MODULUS];
+ else if((c >= 0xF0000 && c <= 0xFFFFD)
+ || (c >= 0x100000 && c <= 0x10FFFD))
+ return utf32__unidata(0xE000); /* Co */
+ else
+ return utf32__unidata(0xFFFF); /* Cn */
+}
+
/** @brief Return the combining class of @p c
* @param c Code point
* @return Combining class of @p c
*/
static inline int utf32__combining_class(uint32_t c) {
- if(c < UNICODE_NCHARS)
- return unidata[c / UNICODE_MODULUS][c % UNICODE_MODULUS].ccc;
- return 0;
+ return utf32__unidata(c)->ccc;
}
/** @brief Stably sort [s,s+ns) into descending order of combining class
/** @brief Guts of the decomposition lookup functions */
#define utf32__decompose_one_generic(WHICH) do { \
- const uint32_t *dc = \
- (c < UNICODE_NCHARS \
- ? unidata[c / UNICODE_MODULUS][c % UNICODE_MODULUS].WHICH \
- : 0); \
+ const uint32_t *dc = utf32__unidata(c)->WHICH; \
if(dc) { \
/* Found a canonical decomposition in the table */ \
while(*dc) \
/** @brief Single-character case-fold and decompose operation */
#define utf32__casefold_one(WHICH) do { \
- const uint32_t *cf = \
- (c < UNICODE_NCHARS \
- ? unidata[c / UNICODE_MODULUS][c % UNICODE_MODULUS].casefold \
- : 0); \
+ const uint32_t *cf = utf32__unidata(c)->casefold; \
if(cf) { \
/* Found a case-fold mapping in the table */ \
while(*cf) \
* normalize before we fold. In Unicode 5.0.0 this means 0345 COMBINING
* GREEK YPOGEGRAMMENI in its decomposition and the various characters that
* canonically decompose to it. */
- for(n = 0; n < ns; ++n) {
- c = s[n];
- if(c < UNICODE_NCHARS
- && (unidata[c / UNICODE_MODULUS][c % UNICODE_MODULUS].flags
- & unicode_normalize_before_casefold))
+ for(n = 0; n < ns; ++n)
+ if(utf32__unidata(s[n])->flags & unicode_normalize_before_casefold)
break;
- }
if(n < ns) {
/* We need a preliminary decomposition */
if(!(ss = utf32_decompose_canon(s, ns, &ns)))
size_t n;
uint32_t *ss = 0;
- for(n = 0; n < ns; ++n) {
- c = s[n];
- if(c < UNICODE_NCHARS
- && (unidata[c / UNICODE_MODULUS][c % UNICODE_MODULUS].flags
- & unicode_normalize_before_casefold))
+ for(n = 0; n < ns; ++n)
+ if(utf32__unidata(s[n])->flags & unicode_normalize_before_casefold)
break;
- }
if(n < ns) {
/* We need a preliminary _canonical_ decomposition */
if(!(ss = utf32_decompose_canon(s, ns, &ns)))
* @return General_Category property value
*/
static inline enum unicode_General_Category utf32__general_category(uint32_t c) {
- if(c < UNICODE_NCHARS) {
- const struct unidata *const ud = &unidata[c / UNICODE_MODULUS][c % UNICODE_MODULUS];
- return ud->general_category;
- } else
- return unicode_General_Category_Cn;
+ return utf32__unidata(c)->general_category;
}
/** @brief Check Grapheme_Cluster_Break property
* @return Word_Break property value of @p c
*/
static enum unicode_Word_Break utf32__word_break(uint32_t c) {
- if(c < 0xAC00 || c > 0xD7A3) {
- if(c < UNICODE_NCHARS)
- return unidata[c / UNICODE_MODULUS][c % UNICODE_MODULUS].word_break;
- else
- return unicode_Word_Break_Other;
- } else
+ if(c < 0xAC00 || c > 0xD7A3)
+ return utf32__unidata(c)->word_break;
+ else
return unicode_Word_Break_ALetter;
}