sync code with last improvements from OpenBSD

app/luit/charset.h

@@ -0,0 +1,79 @@
+/*
+Copyright (c) 2001 by Juliusz Chroboczek
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef LUIT_CHARSET_H
+#define LUIT_CHARSET_H 1
+
+#include "other.h"
+
+#define T_FAILED 0
+#define T_94 1
+#define T_96 2
+#define T_128 3
+#define T_9494 4
+#define T_9696 5
+/* Big 5 */
+#define T_94192 6
+#define T_OTHER 7
+
+/* True for charsets that pass control chars unchanged, at least in
+   the first byte */
+#define CHARSET_REGULAR(c) ((c)->type != T_128)
+
+typedef struct _Charset {
+    const char *name;
+    int type;
+    unsigned char final;
+    unsigned int (*recode) (unsigned int, const struct _Charset * self);
+    int (*reverse) (unsigned int, const struct _Charset * self);
+    const void *data;
+    int (*other_stack) (unsigned c, OtherStatePtr aux);
+    OtherState *other_aux;
+    unsigned int (*other_recode) (unsigned int c, OtherStatePtr aux);
+    unsigned int (*other_reverse) (unsigned int c, OtherStatePtr aux);
+    struct _Charset *next;
+} CharsetRec, *CharsetPtr;
+
+typedef struct _LocaleCharset {
+    const char *name;
+    int gl;
+    int gr;
+    const char *g0;
+    const char *g1;
+    const char *g2;
+    const char *g3;
+    const char *other;
+} LocaleCharsetRec, *LocaleCharsetPtr;
+
+const CharsetRec *getUnknownCharset(int);
+const CharsetRec *getCharset(unsigned, int);
+const CharsetRec *getCharsetByName(const char *);
+void reportCharsets(void);
+int getLocaleState(const char *locale, const char *charset,
+		   int *gl_return, int *gr_return,
+		   const CharsetRec * *g0_return,
+		   const CharsetRec * *g1_return,
+		   const CharsetRec * *g2_return,
+		   const CharsetRec * *g3_return,
+		   const CharsetRec * *other_return);
+
+#endif /* LUIT_CHARSET_H */