contrib/libedit/src/chartype.h

   1 /*      $NetBSD: chartype.h,v 1.13 2015/02/22 02:16:19 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
  48 #if 0 /* DragonFly wchar supports ISO 10646 */
  49 #if !defined(__NetBSD__) && !defined(__sun) && !(defined(__APPLE__) && defined(__MACH__)) && !defined(__OpenBSD__)
  50 #ifndef __STDC_ISO_10646__
  51 /* In many places it is assumed that the first 127 code points are ASCII
  52  * compatible, so ensure wchar_t indeed does ISO 10646 and not some other
  53  * funky encoding that could break us in weird and wonderful ways. */
  54         #error wchar_t must store ISO 10646 characters
  55 #endif
  56 #endif
  57 #endif
  58
  59 /* Oh for a <uchar.h> with char32_t and __STDC_UTF_32__ in it...
  60  * ref: ISO/IEC DTR 19769
  61  */
  62 #if WCHAR_MAX < INT32_MAX
  63 #warning Build environment does not support non-BMP characters
  64 #endif
  65
  66 #ifndef HAVE_WCSDUP
  67 wchar_t *wcsdup(const wchar_t *s);
  68 #endif
  69
  70 #define ct_mbtowc            mbtowc
  71 #define ct_mbtowc_reset      mbtowc(0,0,(size_t)0)
  72 #define ct_wctomb            wctomb
  73 #define ct_wctomb_reset      wctomb(0,0)
  74 #define ct_wcstombs          wcstombs
  75 #define ct_mbstowcs          mbstowcs
  76
  77 #define Char                    wchar_t
  78 #define Int                     wint_t
  79 #define FUN(prefix,rest)        prefix ## _w ## rest
  80 #define FUNW(type)              type ## _w
  81 #define TYPE(type)              type ## W
  82 #define FSTR                    "%ls"
  83 #define STR(x)                  L ## x
  84 #define UC(c)                   c
  85 #define Isalpha(x)  iswalpha(x)
  86 #define Isalnum(x)  iswalnum(x)
  87 #define Isgraph(x)  iswgraph(x)
  88 #define Isspace(x)  iswspace(x)
  89 #define Isdigit(x)  iswdigit(x)
  90 #define Iscntrl(x)  iswcntrl(x)
  91 #define Isprint(x)  iswprint(x)
  92
  93 #define Isupper(x)  iswupper(x)
  94 #define Islower(x)  iswlower(x)
  95 #define Toupper(x)  towupper(x)
  96 #define Tolower(x)  towlower(x)
  97
  98 #define IsASCII(x)  (x < 0x100)
  99
 100 #define Strlen(x)       wcslen(x)
 101 #define Strchr(s,c)     wcschr(s,c)
 102 #define Strrchr(s,c)    wcsrchr(s,c)
 103 #define Strstr(s,v)     wcsstr(s,v)
 104 #define Strdup(x)       wcsdup(x)
 105 #define Strcpy(d,s)     wcscpy(d,s)
 106 #define Strncpy(d,s,n)  wcsncpy(d,s,n)
 107 #define Strncat(d,s,n)  wcsncat(d,s,n)
 108
 109 #define Strcmp(s,v)     wcscmp(s,v)
 110 #define Strncmp(s,v,n)  wcsncmp(s,v,n)
 111 #define Strcspn(s,r)    wcscspn(s,r)
 112
 113 #define Strtol(p,e,b)   wcstol(p,e,b)
 114
 115 static inline int
 116 Width(wchar_t c)
 117 {
 118         int w = wcwidth(c);
 119         return w < 0 ? 0 : w;
 120 }
 121
 122 #else /* NARROW */
 123
 124 #define ct_mbtowc            error
 125 #define ct_mbtowc_reset
 126 #define ct_wctomb            error
 127 #define ct_wctomb_reset
 128 #define ct_wcstombs(a, b, c)    (strncpy(a, b, c), strlen(a))
 129 #define ct_mbstowcs(a, b, c)    (strncpy(a, b, c), strlen(a))
 130
 131 #define Char                    char
 132 #define Int                     int
 133 #define FUN(prefix,rest)        prefix ## _ ## rest
 134 #define FUNW(type)              type
 135 #define TYPE(type)              type
 136 #define FSTR                    "%s"
 137 #define STR(x)                  x
 138 #define UC(c)                   (unsigned char)(c)
 139
 140 #define Isalpha(x)  isalpha((unsigned char)x)
 141 #define Isalnum(x)  isalnum((unsigned char)x)
 142 #define Isgraph(x)  isgraph((unsigned char)x)
 143 #define Isspace(x)  isspace((unsigned char)x)
 144 #define Isdigit(x)  isdigit((unsigned char)x)
 145 #define Iscntrl(x)  iscntrl((unsigned char)x)
 146 #define Isprint(x)  isprint((unsigned char)x)
 147
 148 #define Isupper(x)  isupper((unsigned char)x)
 149 #define Islower(x)  islower((unsigned char)x)
 150 #define Toupper(x)  toupper((unsigned char)x)
 151 #define Tolower(x)  tolower((unsigned char)x)
 152
 153 #define IsASCII(x)  isascii((unsigned char)x)
 154
 155 #define Strlen(x)       strlen(x)
 156 #define Strchr(s,c)     strchr(s,c)
 157 #define Strrchr(s,c)    strrchr(s,c)
 158 #define Strstr(s,v)     strstr(s,v)
 159 #define Strdup(x)       strdup(x)
 160 #define Strcpy(d,s)     strcpy(d,s)
 161 #define Strncpy(d,s,n)  strncpy(d,s,n)
 162 #define Strncat(d,s,n)  strncat(d,s,n)
 163
 164 #define Strcmp(s,v)     strcmp(s,v)
 165 #define Strncmp(s,v,n)  strncmp(s,v,n)
 166 #define Strcspn(s,r)    strcspn(s,r)
 167
 168 #define Strtol(p,e,b)   strtol(p,e,b)
 169
 170 #define Width(c)        1
 171
 172 #endif
 173
 174
 175 #ifdef WIDECHAR
 176 /*
 177  * Conversion buffer
 178  */
 179 typedef struct ct_buffer_t {
 180         char    *cbuff;
 181         size_t  csize;
 182         Char *wbuff;
 183         size_t  wsize;
 184 } ct_buffer_t;
 185
 186 #define ct_encode_string __ct_encode_string
 187 /* Encode a wide-character string and return the UTF-8 encoded result. */
 188 public char *ct_encode_string(const Char *, ct_buffer_t *);
 189
 190 #define ct_decode_string __ct_decode_string
 191 /* Decode a (multi)?byte string and return the wide-character string result. */
 192 public Char *ct_decode_string(const char *, ct_buffer_t *);
 193
 194 /* Decode a (multi)?byte argv string array.
 195  * The pointer returned must be free()d when done. */
 196 protected Char **ct_decode_argv(int, const char *[],  ct_buffer_t *);
 197
 198 /* Resizes the conversion buffer(s) if needed. */
 199 protected int ct_conv_cbuff_resize(ct_buffer_t *, size_t);
 200 protected int ct_conv_wbuff_resize(ct_buffer_t *, size_t);
 201 protected ssize_t ct_encode_char(char *, size_t, Char);
 202 protected size_t ct_enc_width(Char);
 203
 204 #define ct_free_argv(s) el_free(s)
 205
 206 #else
 207 #define ct_encode_string(s, b)  (s)
 208 #define ct_decode_string(s, b)  (s)
 209 #define ct_decode_argv(l, s, b) (s)
 210 #define ct_conv_cbuff_resize(b, s) ((s) == (0))
 211 #define ct_conv_wbuff_resize(b, s) ((s) == (0))
 212 #define ct_encode_char(d, l, s) (*d = s, 1)
 213 #define ct_free_argv(s)
 214 #endif
 215
 216 #ifndef NARROWCHAR
 217 /* Encode a characted into the destination buffer, provided there is sufficent
 218  * buffer space available. Returns the number of bytes used up (zero if the
 219  * character cannot be encoded, -1 if there was not enough space available). */
 220
 221 /* The maximum buffer size to hold the most unwieldly visual representation,
 222  * in this case \U+nnnnn. */
 223 #define VISUAL_WIDTH_MAX ((size_t)8)
 224
 225 /* The terminal is thought of in terms of X columns by Y lines. In the cases
 226  * where a wide character takes up more than one column, the adjacent
 227  * occupied column entries will contain this faux character. */
 228 #define MB_FILL_CHAR ((Char)-1)
 229
 230 /* Visual width of character c, taking into account ^? , \0177 and \U+nnnnn
 231  * style visual expansions. */
 232 protected int ct_visual_width(Char);
 233
 234 /* Turn the given character into the appropriate visual format, matching
 235  * the width given by ct_visual_width(). Returns the number of characters used
 236  * up, or -1 if insufficient space. Buffer length is in count of Char's. */
 237 protected ssize_t ct_visual_char(Char *, size_t, Char);
 238
 239 /* Convert the given string into visual format, using the ct_visual_char()
 240  * function. Uses a static buffer, so not threadsafe. */
 241 protected const Char *ct_visual_string(const Char *);
 242
 243
 244 /* printable character, use ct_visual_width() to find out display width */
 245 #define CHTYPE_PRINT        ( 0)
 246 /* control character found inside the ASCII portion of the charset */
 247 #define CHTYPE_ASCIICTL     (-1)
 248 /* a \t */
 249 #define CHTYPE_TAB          (-2)
 250 /* a \n */
 251 #define CHTYPE_NL           (-3)
 252 /* non-printable character */
 253 #define CHTYPE_NONPRINT     (-4)
 254 /* classification of character c, as one of the above defines */
 255 protected int ct_chr_class(Char c);
 256 #endif
 257
 258
 259 #endif /* _chartype_f */