lib/libedit/chartype.h

   1 /*      $NetBSD: chartype.h,v 1.10 2011/11/16 01:45:10 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 #if !defined(__minix) && !defined(__NetBSD__) && !defined(__sun) && !(defined(__APPLE__) && defined(__MACH__))
  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,(size_t)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 static inline int
 109 Width(wchar_t c)
 110 {
 111         int w = wcwidth(c);
 112         return w < 0 ? 0 : w;
 113 }
 114
 115 #else /* NARROW */
 116
 117 #define ct_mbtowc            error
 118 #define ct_mbtowc_reset
 119 #define ct_wctomb            error
 120 #define ct_wctomb_reset
 121 #define ct_wcstombs(a, b, c)    (strncpy(a, b, c), strlen(a))
 122 #define ct_mbstowcs(a, b, c)    (strncpy(a, b, c), strlen(a))
 123
 124 #define Char                    char
 125 #define Int                     int
 126 #define FUN(prefix,rest)        prefix ## _ ## rest
 127 #define FUNW(type)              type
 128 #define TYPE(type)              type
 129 #define FSTR                    "%s"
 130 #define STR(x)                  x
 131 #define UC(c)                   (unsigned char)(c)
 132
 133 #define Isalpha(x)  isalpha((unsigned char)x)
 134 #define Isalnum(x)  isalnum((unsigned char)x)
 135 #define Isgraph(x)  isgraph((unsigned char)x)
 136 #define Isspace(x)  isspace((unsigned char)x)
 137 #define Isdigit(x)  isdigit((unsigned char)x)
 138 #define Iscntrl(x)  iscntrl((unsigned char)x)
 139 #define Isprint(x)  isprint((unsigned char)x)
 140
 141 #define Isupper(x)  isupper((unsigned char)x)
 142 #define Islower(x)  islower((unsigned char)x)
 143 #define Toupper(x)  toupper((unsigned char)x)
 144 #define Tolower(x)  tolower((unsigned char)x)
 145
 146 #define IsASCII(x)  isascii((unsigned char)x)
 147
 148 #define Strlen(x)       strlen(x)
 149 #define Strchr(s,c)     strchr(s,c)
 150 #define Strrchr(s,c)    strrchr(s,c)
 151 #define Strstr(s,v)     strstr(s,v)
 152 #define Strdup(x)       strdup(x)
 153 #define Strcpy(d,s)     strcpy(d,s)
 154 #define Strncpy(d,s,n)  strncpy(d,s,n)
 155 #define Strncat(d,s,n)  strncat(d,s,n)
 156
 157 #define Strcmp(s,v)     strcmp(s,v)
 158 #define Strncmp(s,v,n)  strncmp(s,v,n)
 159 #define Strcspn(s,r)    strcspn(s,r)
 160
 161 #define Strtol(p,e,b)   strtol(p,e,b)
 162
 163 #define Width(c)        1
 164
 165 #endif
 166
 167
 168 #ifdef WIDECHAR
 169 /*
 170  * Conversion buffer
 171  */
 172 typedef struct ct_buffer_t {
 173         char    *cbuff;
 174         size_t  csize;
 175         Char *wbuff;
 176         size_t  wsize;
 177 } ct_buffer_t;
 178
 179 #define ct_encode_string __ct_encode_string
 180 /* Encode a wide-character string and return the UTF-8 encoded result. */
 181 public char *ct_encode_string(const Char *, ct_buffer_t *);
 182
 183 #define ct_decode_string __ct_decode_string
 184 /* Decode a (multi)?byte string and return the wide-character string result. */
 185 public Char *ct_decode_string(const char *, ct_buffer_t *);
 186
 187 /* Decode a (multi)?byte argv string array.
 188  * The pointer returned must be free()d when done. */
 189 protected Char **ct_decode_argv(int, const char *[],  ct_buffer_t *);
 190
 191 /* Resizes the conversion buffer(s) if needed. */
 192 protected void ct_conv_buff_resize(ct_buffer_t *, size_t, size_t);
 193 protected ssize_t ct_encode_char(char *, size_t, Char);
 194 protected size_t ct_enc_width(Char);
 195
 196 #define ct_free_argv(s) el_free(s)
 197
 198 #else
 199 #define ct_encode_string(s, b)  (s)
 200 #define ct_decode_string(s, b)  (s)
 201 #define ct_decode_argv(l, s, b) (s)
 202 #define ct_conv_buff_resize(b, os, ns)
 203 #define ct_encode_char(d, l, s) (*d = s, 1)
 204 #define ct_free_argv(s)
 205 #endif
 206
 207 #ifndef NARROWCHAR
 208 /* Encode a characted into the destination buffer, provided there is sufficent
 209  * buffer space available. Returns the number of bytes used up (zero if the
 210  * character cannot be encoded, -1 if there was not enough space available). */
 211
 212 /* The maximum buffer size to hold the most unwieldly visual representation,
 213  * in this case \U+nnnnn. */
 214 #define VISUAL_WIDTH_MAX ((size_t)8)
 215
 216 /* The terminal is thought of in terms of X columns by Y lines. In the cases
 217  * where a wide character takes up more than one column, the adjacent
 218  * occupied column entries will contain this faux character. */
 219 #define MB_FILL_CHAR ((Char)-1)
 220
 221 /* Visual width of character c, taking into account ^? , \0177 and \U+nnnnn
 222  * style visual expansions. */
 223 protected int ct_visual_width(Char);
 224
 225 /* Turn the given character into the appropriate visual format, matching
 226  * the width given by ct_visual_width(). Returns the number of characters used
 227  * up, or -1 if insufficient space. Buffer length is in count of Char's. */
 228 protected ssize_t ct_visual_char(Char *, size_t, Char);
 229
 230 /* Convert the given string into visual format, using the ct_visual_char()
 231  * function. Uses a static buffer, so not threadsafe. */
 232 protected const Char *ct_visual_string(const Char *);
 233
 234
 235 /* printable character, use ct_visual_width() to find out display width */
 236 #define CHTYPE_PRINT        ( 0)
 237 /* control character found inside the ASCII portion of the charset */
 238 #define CHTYPE_ASCIICTL     (-1)
 239 /* a \t */
 240 #define CHTYPE_TAB          (-2)
 241 /* a \n */
 242 #define CHTYPE_NL           (-3)
 243 /* non-printable character */
 244 #define CHTYPE_NONPRINT     (-4)
 245 /* classification of character c, as one of the above defines */
 246 protected int ct_chr_class(Char c);
 247 #endif
 248
 249
 250 #endif /* _chartype_f */