PDCLIB-3 Change _PDCLIB_wcinfo_t to use wint_t

[pdclib] / internals / _PDCLIB_locale.h

diff --git a/internals/_PDCLIB_locale.h b/internals/_PDCLIB_locale.h
index bed89b561a39903a0ea335b1be7401359d87d5d4..dbedc8093e1829b1ed32e1c956aeca2573483830 100644 (file)
--- a/internals/_PDCLIB_locale.h
+++ b/internals/_PDCLIB_locale.h
@@ -1,12 +1,132 @@
 #ifndef __PDCLIB_LOCALE_H
 #define __PDCLIB_LOCALE_H __PDCLIB_LOCALE_H
+#include <_PDCLIB_int.h>
 #include <locale.h>
+#include <threads.h>
+#include <stdlib.h>
 
-#define _PDCLIB_threadlocale() (uselocale(NULL))
+#define _PDCLIB_LOCALE_METHOD_TSS           't'
+#define _PDCLIB_LOCALE_METHOD_THREAD_LOCAL  'T'
+
+#if !defined(_PDCLIB_LOCALE_METHOD)
+    #error _PDCLIB_LOCALE_METHOD undefined: don't know where I'm storing the thread locale
+#elif _PDCLIB_LOCALE_METHOD == _PDCLIB_LOCALE_METHOD_TSS
+    extern tss_t _PDCLIB_locale_tss;
+    static inline locale_t _PDCLIB_threadlocale( void )
+    {
+        locale_t l = tss_get(_PDCLIB_locale_tss);
+        if(l == NULL)
+            l = &_PDCLIB_global_locale;
+        return l;
+    }
+
+    static inline void _PDCLIB_setthreadlocale( locale_t l )
+    {
+        if(tss_set(_PDCLIB_locale_tss, l) != thrd_success)
+            abort();
+    }
+#elif _PDCLIB_LOCALE_METHOD == _PDCLIB_LOCALE_METHOD_THREAD_LOCAL
+    extern thread_local locale_t _PDCLIB_locale_tls;
+    #define _PDCLIB_threadlocale() (_PDCLIB_locale_tls || &_PDCLIB_global_locale)
+    static inline locale_t _PDCLIB_threadlocale( void )
+    {
+        locale_t l = _PDCLIB_locale_tls;
+        if(l == NULL)
+            l = &_PDCLIB_global_locale;
+        return l;
+    }
+
+    static inline void _PDCLIB_setthreadlocale( locale_t l )
+    {
+        _PDCLIB_locale_tls = l;
+    }
+#else
+    #error Locale TSS method unspecified
+#endif
+
+/* -------------------------------------------------------------------------- */
+/* <ctype.h> lookup tables                                                    */
+/* -------------------------------------------------------------------------- */
+
+#define _PDCLIB_CTYPE_ALPHA   1
+#define _PDCLIB_CTYPE_BLANK   2
+#define _PDCLIB_CTYPE_CNTRL   4
+#define _PDCLIB_CTYPE_GRAPH   8
+#define _PDCLIB_CTYPE_PUNCT  16
+#define _PDCLIB_CTYPE_SPACE  32
+#define _PDCLIB_CTYPE_LOWER  64
+#define _PDCLIB_CTYPE_UPPER 128
+#define _PDCLIB_CTYPE_DIGIT 256
+#define _PDCLIB_CTYPE_XDIGT 512
+
+typedef struct _PDCLIB_ctype
+{
+    _PDCLIB_uint16_t flags;
+    unsigned char upper;
+    unsigned char lower;
+    unsigned char collation;
+} _PDCLIB_ctype_t;
+
+typedef struct _PDCLIB_wcinfo
+{
+    _PDCLIB_wint_t   num;
+    _PDCLIB_uint16_t flags;
+    _PDCLIB_wint_t   lower;
+    _PDCLIB_wint_t   upper;
+} _PDCLIB_wcinfo_t;
+
+extern _PDCLIB_wcinfo_t _PDCLIB_wcinfo[];
+extern size_t           _PDCLIB_wcinfo_size;
+
+static inline int _PDCLIB_wcinfo_cmp( const void * _key, const void * _obj )
+{
+    _PDCLIB_uint32_t * key = (_PDCLIB_uint32_t *) _key;
+    _PDCLIB_wcinfo_t * obj = (_PDCLIB_wcinfo_t *) _obj;
+    return *key - obj->num;
+}
+
+static inline _PDCLIB_wcinfo_t * _PDCLIB_wcgetinfo( _PDCLIB_uint32_t num )
+{
+    _PDCLIB_wcinfo_t *info = (_PDCLIB_wcinfo_t*) 
+        bsearch( &num, _PDCLIB_wcinfo, _PDCLIB_wcinfo_size, 
+                 sizeof( _PDCLIB_wcinfo[0] ), _PDCLIB_wcinfo_cmp );
+
+    return info;
+}
+
+static inline _PDCLIB_wint_t _PDCLIB_unpackwint( _PDCLIB_wint_t wc )
+{
+    if( sizeof(_PDCLIB_wchar_t) == 2 && sizeof(_PDCLIB_wint_t) == 4 ) {
+        /* On UTF-16 platforms, as an extension accept a "packed surrogate"
+         * encoding. We accept the surrogate pairs either way
+         */
+
+        _PDCLIB_wint_t c = (wc & 0xF800F800);
+        if(c == (_PDCLIB_wint_t) 0xD800DC00) {
+            // MSW: Lead, LSW: Trail
+            _PDCLIB_wint_t lead  = wc >> 16 & 0x3FF;
+            _PDCLIB_wint_t trail = wc       & 0x3FF;
+            wc = lead << 10 | trail;
+        } else if(c == (_PDCLIB_wint_t) 0xDC00D800) {
+            // MSW: Trail, LSW: Lead
+            _PDCLIB_wint_t trail = wc >> 16 & 0x3FF;
+            _PDCLIB_wint_t lead  = wc       & 0x3FF;
+            wc = lead << 10 | trail;
+        }
+
+    }
+    return wc;
+}
 
 struct _PDCLIB_locale {
-    struct _PDCLIB_charcodec    *_Codec;
+    _PDCLIB_charcodec_t          _Codec;
     struct lconv                 _Conv;
+
+    /* ctype */
+    _PDCLIB_ctype_t             *_CType; 
+
+    /* perror/strerror */
+    char                        *_ErrnoStr[_PDCLIB_ERRNO_MAX];
 };
 
 #endif