pith/charconv/utf8.h

   1 /*-----------------------------------------------------------------------
   2  $Id: utf8.h 1025 2008-04-08 22:59:38Z hubert@u.washington.edu $
   3   -----------------------------------------------------------------------*/
   4
   5 /*
   6  * ========================================================================
   7  * Copyright 2013-2021 Eduardo Chappa
   8  * Copyright 2006-2008 University of Washington
   9  *
  10  * Licensed under the Apache License, Version 2.0 (the "License");
  11  * you may not use this file except in compliance with the License.
  12  * You may obtain a copy of the License at
  13  *
  14  *     http://www.apache.org/licenses/LICENSE-2.0
  15  *
  16  * ========================================================================
  17  */
  18
  19 #ifndef PITH_CHARCONV_UTF8_INCLUDED
  20 #define PITH_CHARCONV_UTF8_INCLUDED
  21
  22
  23 #include <general.h>
  24 #include "../filttype.h"
  25
  26
  27 /* flags for convert_to_utf8 */
  28 #define CU8_NONE        0x00
  29 #define CU8_NOINFER     0x01    /* Not ok to infer charset */
  30
  31
  32 /*
  33  * The data in vl and dl is UCS-4 characters.
  34  * They are arrays of size vlen and dlen of unsigned longs.
  35  */
  36 struct display_line {
  37     int   row, col;     /* where display starts                                 */
  38     UCS  *vl;           /* virtual line, the actual data string                 */
  39     int   vlen;         /* size of vl array                                     */
  40     int   vused;        /* elements of vl in use                                */
  41     int   vbase;        /* index into array, first virtual char on display      */
  42     UCS  *dl;           /* visible part of virtual line on display              */
  43     UCS  *olddl;
  44     int   dlen;         /* size of dl array                                     */
  45     int   dwid;         /* screenwidth avail for dl                             */
  46     void  (*movecursor)(int, int);
  47     void  (*writechar)(UCS);
  48 };
  49
  50
  51 /*
  52  * Exported Prototypes
  53  */
  54 void           init_utf8_display(int, void *);
  55 int            wcellwidth(UCS);
  56 int            wtomb(char *, UCS);
  57 UCS            mbtow(void *, unsigned char **, unsigned long *);
  58 void           set_locale_charmap(char *);
  59 char          *convert_to_utf8(char *, char *, int);
  60 char          *convert_to_locale(char *);
  61 int            utf8_to_locale(int c, CBUF_S *cb, unsigned char obuf[], size_t obuf_size);
  62 unsigned       ucs4_str_width(UCS *);
  63 unsigned       ucs4_str_width_a_to_b(UCS *, int, int);
  64 unsigned       ucs4_str_width_ptr_to_ptr(UCS *, UCS *);
  65 UCS           *ucs4_particular_width(UCS*, int);
  66 UCS           *utf8_to_ucs4_cpystr(char *);
  67 char          *ucs4_to_utf8_cpystr(UCS *);
  68 char          *ucs4_to_utf8_cpystr_n(UCS *, int);
  69 char          *ucs4_to_utf8_n_cpystr(UCS *, int);
  70 #ifdef _WINDOWS
  71 LPTSTR         utf8_to_lptstr(LPSTR);
  72 LPSTR          lptstr_to_utf8(LPTSTR);
  73 LPTSTR         ucs4_to_lptstr(UCS *);
  74 UCS           *lptstr_to_ucs4(LPTSTR);
  75 #endif /* _WINDOWS */
  76 int            utf8_to_ucs4_oneatatime(int, CBUF_S *, UCS *, int *);
  77 size_t         ucs4_strlen(UCS *s);
  78 int            ucs4_strcmp(UCS *s1, UCS *s2);
  79 UCS           *ucs4_cpystr(UCS *s);
  80 UCS           *ucs4_strncpy(UCS *ucs4dst, UCS *ucs4src, size_t n);
  81 UCS           *ucs4_strncat(UCS *ucs4dst, UCS *ucs4src, size_t n);
  82 UCS           *ucs4_strchr(UCS *s, UCS c);
  83 UCS           *ucs4_strrchr(UCS *s, UCS c);
  84 unsigned       utf8_width(char *);
  85 size_t         utf8_to_width_rhs(char *, char *, size_t, unsigned);
  86 int            utf8_snprintf(char *, size_t, char *, ...);
  87 size_t         utf8_to_width(char *, char *, size_t, unsigned, unsigned *);
  88 size_t         utf8_pad_to_width(char *, char *, size_t, unsigned, int);
  89 unsigned       utf8_truncate(char *, unsigned);
  90 char          *utf8_count_back_width(char *, char *, unsigned, unsigned *);
  91 char          *utf8_count_forw_width(char *, unsigned, unsigned *);
  92 void           sstrncpy(char **, char *, int);
  93 int            setup_for_input_output(int, char **, char **, void **, char **);
  94 int            input_charset_is_supported(char *);
  95 int            output_charset_is_supported(char *);
  96 int            posting_charset_is_supported(char *);
  97 char          *utf8_to_charset(char *, char *, int);
  98 char          *comatose(long);
  99 char          *tose(long);
 100 void           line_paint(int, struct display_line *, int *);
 101 int            pith_ucs4width(UCS);
 102
 103 #if     !defined(_WINDOWS) && HAVE_LANGINFO_H && defined(CODESET)
 104 char          *nl_langinfo_codeset_wrapper(void);
 105 #endif
 106
 107
 108 #endif  /* PITH_CHARCONV_UTF8_INCLUDED */