lib/libedit/chartype.h

   1 /*      $NetBSD: chartype.h,v 1.3 2009/12/31 18:32:37 christos Exp $    */
   2
   3 /*-
   4  * Copyright (c) 2009 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *        This product includes software developed by the NetBSD
  18  *        Foundation, Inc. and its contributors.
  19  * 4. Neither the name of The NetBSD Foundation nor the names of its
  20  *    contributors may be used to endorse or promote products derived
  21  *    from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 #ifndef _h_chartype_f
  37 #define _h_chartype_f
  38
  39
  40
  41 #ifdef WIDECHAR
  42
  43 /* Ideally we should also test the value of the define to see if it
  44  * supports non-BMP code points without requiring UTF-16, but nothing
  45  * seems to actually advertise this properly, despite Unicode 3.1 having
  46  * been around since 2001... */
  47 #ifndef __NetBSD__
  48 #ifndef __STDC_ISO_10646__
  49 /* In many places it is assumed that the first 127 code points are ASCII
  50  * compatible, so ensure wchar_t indeed does ISO 10646 and not some other
  51  * funky encoding that could break us in weird and wonderful ways. */
  52         #error wchar_t must store ISO 10646 characters
  53 #endif
  54 #endif
  55
  56 /* Oh for a <uchar.h> with char32_t and __STDC_UTF_32__ in it...
  57  * ref: ISO/IEC DTR 19769
  58  */
  59 #if WCHAR_MAX < INT32_MAX
  60 #warning Build environment does not support non-BMP characters
  61 #endif
  62
  63 #define ct_mbtowc            mbtowc
  64 #define ct_mbtowc_reset      mbtowc(0,0,0)
  65 #define ct_wctomb            wctomb
  66 #define ct_wctomb_reset      wctomb(0,0)
  67 #define ct_wcstombs          wcstombs
  68 #define ct_mbstowcs          mbstowcs
  69
  70 #define Char                    wchar_t
  71 #define Int                     wint_t
  72 #define FUN(prefix,rest)        prefix ## _w ## rest
  73 #define FUNW(type)              type ## _w
  74 #define TYPE(type)              type ## W
  75 #define FSTR                    "%ls"
  76 #define STR(x)                  L ## x
  77 #define UC(c)                   c
  78 #define Isalpha(x)  iswalpha(x)
  79 #define Isalnum(x)  iswalnum(x)
  80 #define Isgraph(x)  iswgraph(x)
  81 #define Isspace(x)  iswspace(x)
  82 #define Isdigit(x)  iswdigit(x)
  83 #define Iscntrl(x)  iswcntrl(x)
  84 #define Isprint(x)  iswprint(x)
  85
  86 #define Isupper(x)  iswupper(x)
  87 #define Islower(x)  iswlower(x)
  88 #define Toupper(x)  towupper(x)
  89 #define Tolower(x)  towlower(x)
  90
  91 #define IsASCII(x)  (x < 0x100)
  92
  93 #define Strlen(x)       wcslen(x)
  94 #define Strchr(s,c)     wcschr(s,c)
  95 #define Strrchr(s,c)    wcsrchr(s,c)
  96 #define Strstr(s,v)     wcsstr(s,v)
  97 #define Strdup(x)       wcsdup(x)
  98 #define Strcpy(d,s)     wcscpy(d,s)
  99 #define Strncpy(d,s,n)  wcsncpy(d,s,n)
 100 #define Strncat(d,s,n)  wcsncat(d,s,n)
 101
 102 #define Strcmp(s,v)     wcscmp(s,v)
 103 #define Strncmp(s,v,n)  wcsncmp(s,v,n)
 104 #define Strcspn(s,r)    wcscspn(s,r)
 105
 106 #define Strtol(p,e,b)   wcstol(p,e,b)
 107
 108 #define Width(c)        wcwidth(c)
 109
 110 #else /* NARROW */
 111
 112 #define ct_mbtowc            error
 113 #define ct_mbtowc_reset
 114 #define ct_wctomb            error
 115 #define ct_wctomb_reset
 116 #define ct_wcstombs(a, b, c)    (strncpy(a, b, c), strlen(a))
 117 #define ct_mbstowcs(a, b, c)    (strncpy(a, b, c), strlen(a))
 118
 119 #define Char                    char
 120 #define Int                     int
 121 #define FUN(prefix,rest)        prefix ## _ ## rest
 122 #define FUNW(type)              type
 123 #define TYPE(type)              type
 124 #define FSTR                    "%s"
 125 #define STR(x)                  x
 126 #define UC(c)                   (unsigned char)(c)
 127
 128 #define Isalpha(x)  isalpha((unsigned char)x)
 129 #define Isalnum(x)  isalnum((unsigned char)x)
 130 #define Isgraph(x)  isgraph((unsigned char)x)
 131 #define Isspace(x)  isspace((unsigned char)x)
 132 #define Isdigit(x)  isdigit((unsigned char)x)
 133 #define Iscntrl(x)  iscntrl((unsigned char)x)
 134 #define Isprint(x)  isprint((unsigned char)x)
 135
 136 #define Isupper(x)  isupper((unsigned char)x)
 137 #define Islower(x)  islower((unsigned char)x)
 138 #define Toupper(x)  toupper((unsigned char)x)
 139 #define Tolower(x)  tolower((unsigned char)x)
 140
 141 #define IsASCII(x)  isascii((unsigned char)x)
 142
 143 #define Strlen(x)       strlen(x)
 144 #define Strchr(s,c)     strchr(s,c)
 145 #define Strrchr(s,c)    strrchr(s,c)
 146 #define Strstr(s,v)     strstr(s,v)
 147 #define Strdup(x)       strdup(x)
 148 #define Strcpy(d,s)     strcpy(d,s)
 149 #define Strncpy(d,s,n)  strncpy(d,s,n)
 150 #define Strncat(d,s,n)  strncat(d,s,n)
 151
 152 #define Strcmp(s,v)     strcmp(s,v)
 153 #define Strncmp(s,v,n)  strncmp(s,v,n)
 154 #define Strcspn(s,r)    strcspn(s,r)
 155
 156 #define Strtol(p,e,b)   strtol(p,e,b)
 157
 158 #define Width(c)        1
 159
 160 #endif
 161
 162
 163 #ifdef WIDECHAR
 164 /*
 165  * Conversion buffer
 166  */
 167 typedef struct ct_buffer_t {
 168         char    *cbuff;
 169         size_t  csize;
 170         Char *wbuff;
 171         size_t  wsize;
 172 } ct_buffer_t;
 173
 174 #define ct_encode_string __ct_encode_string
 175 /* Encode a wide character string and return the UTF-8 encoded result. */
 176 public char *ct_encode_string(const Char *, ct_buffer_t *);
 177
 178 #define ct_decode_string __ct_decode_string
 179 /* Decode a (multi)?byte string and return the wide character string result. */
 180 public Char *ct_decode_string(const char *, ct_buffer_t *);
 181
 182 /* Decode a (multi)?byte argv string array.
 183  * The pointer returned must be free()d when done. */
 184 protected Char **ct_decode_argv(int, const char *[],  ct_buffer_t *);
 185
 186 /* Resizes the conversion buffer(s) if needed. */
 187 protected void ct_conv_buff_resize(ct_buffer_t *, size_t, size_t);
 188 protected ssize_t ct_encode_char(char *, size_t, Char);
 189
 190 #define ct_free_argv(s) el_free(s)
 191
 192 #else
 193 #define ct_encode_string(s, b)  (s)
 194 #define ct_decode_string(s, b)  (s)
 195 #define ct_decode_argv(l, s, b) (s)
 196 #define ct_conv_buff_resize(b, os, ns)
 197 #define ct_encode_char(d, l, s) (*d = s, 1)
 198 #define ct_free_argv(s)
 199 #endif
 200
 201 #ifndef NARROWCHAR
 202 /* Encode a characted into the destination buffer, provided there is sufficent
 203  * buffer space available. Returns the number of bytes used up (zero if the
 204  * character cannot be encoded, -1 if there was not enough space available). */
 205
 206 /* The maximum buffer size to hold the most unwieldly visual representation,
 207  * in this case \U+nnnnn. */
 208 #define VISUAL_WIDTH_MAX 8
 209
 210 /* The terminal is thought of in terms of X columns by Y lines. In the cases
 211  * where a wide character takes up more than one column, the adjacent
 212  * occupied column entries will contain this faux character. */
 213 #define MB_FILL_CHAR ((Char)-1)
 214
 215 /* Visual width of character c, taking into account ^? , \0177 and \U+nnnnn
 216  * style visual expansions. */
 217 protected int ct_visual_width(Char);
 218
 219 /* Turn the given character into the appropriate visual format, matching
 220  * the width given by ct_visual_width(). Returns the number of characters used
 221  * up, or -1 if insufficient space. Buffer length is in count of Char's. */
 222 protected ssize_t ct_visual_char(Char *, size_t, Char);
 223
 224 /* Convert the given string into visual format, using the ct_visual_char()
 225  * function. Uses a static buffer, so not threadsafe. */
 226 protected const Char *ct_visual_string(const Char *);
 227
 228
 229 /* printable character, use ct_visual_width() to find out display width */
 230 #define CHTYPE_PRINT        ( 0)
 231 /* control character found inside the ASCII portion of the charset */
 232 #define CHTYPE_ASCIICTL     (-1)
 233 /* a \t */
 234 #define CHTYPE_TAB          (-2)
 235 /* a \n */
 236 #define CHTYPE_NL           (-3)
 237 /* non-printable character */
 238 #define CHTYPE_NONPRINT     (-4)
 239 /* classification of character c, as one of the above defines */
 240 protected int ct_chr_class(Char c);
 241 #endif
 242
 243
 244 #endif /* _chartype_f */