Annotation of embedaddon/libiconv/srclib/wchar.in.h, revision 1.1
1.1 ! misho 1: /* A substitute for ISO C99 <wchar.h>, for platforms that have issues.
! 2:
! 3: Copyright (C) 2007-2009 Free Software Foundation, Inc.
! 4:
! 5: This program is free software; you can redistribute it and/or modify
! 6: it under the terms of the GNU General Public License as published by
! 7: the Free Software Foundation; either version 3, or (at your option)
! 8: any later version.
! 9:
! 10: This program is distributed in the hope that it will be useful,
! 11: but WITHOUT ANY WARRANTY; without even the implied warranty of
! 12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! 13: GNU General Public License for more details.
! 14:
! 15: You should have received a copy of the GNU General Public License
! 16: along with this program; if not, write to the Free Software Foundation,
! 17: Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
! 18:
! 19: /* Written by Eric Blake. */
! 20:
! 21: /*
! 22: * ISO C 99 <wchar.h> for platforms that have issues.
! 23: * <http://www.opengroup.org/susv3xbd/wchar.h.html>
! 24: *
! 25: * For now, this just ensures proper prerequisite inclusion order and
! 26: * the declaration of wcwidth().
! 27: */
! 28:
! 29: #if __GNUC__ >= 3
! 30: @PRAGMA_SYSTEM_HEADER@
! 31: #endif
! 32:
! 33: #if defined __need_mbstate_t || (defined __hpux && ((defined _INTTYPES_INCLUDED && !defined strtoimax) || defined _GL_JUST_INCLUDE_SYSTEM_WCHAR_H)) || defined _GL_ALREADY_INCLUDING_WCHAR_H
! 34: /* Special invocation convention:
! 35: - Inside uClibc header files.
! 36: - On HP-UX 11.00 we have a sequence of nested includes
! 37: <wchar.h> -> <stdlib.h> -> <stdint.h>, and the latter includes <wchar.h>,
! 38: once indirectly <stdint.h> -> <sys/types.h> -> <inttypes.h> -> <wchar.h>
! 39: and once directly. In both situations 'wint_t' is not yet defined,
! 40: therefore we cannot provide the function overrides; instead include only
! 41: the system's <wchar.h>.
! 42: - On IRIX 6.5, similarly, we have an include <wchar.h> -> <wctype.h>, and
! 43: the latter includes <wchar.h>. But here, we have no way to detect whether
! 44: <wctype.h> is completely included or is still being included. */
! 45:
! 46: #@INCLUDE_NEXT@ @NEXT_WCHAR_H@
! 47:
! 48: #else
! 49: /* Normal invocation convention. */
! 50:
! 51: #ifndef _GL_WCHAR_H
! 52:
! 53: #define _GL_ALREADY_INCLUDING_WCHAR_H
! 54:
! 55: /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
! 56: <wchar.h>.
! 57: BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
! 58: included before <wchar.h>. */
! 59: #include <stddef.h>
! 60: #include <stdio.h>
! 61: #include <time.h>
! 62:
! 63: /* Include the original <wchar.h> if it exists.
! 64: Some builds of uClibc lack it. */
! 65: /* The include_next requires a split double-inclusion guard. */
! 66: #if @HAVE_WCHAR_H@
! 67: # @INCLUDE_NEXT@ @NEXT_WCHAR_H@
! 68: #endif
! 69:
! 70: #undef _GL_ALREADY_INCLUDING_WCHAR_H
! 71:
! 72: #ifndef _GL_WCHAR_H
! 73: #define _GL_WCHAR_H
! 74:
! 75: /* The definition of GL_LINK_WARNING is copied here. */
! 76:
! 77: #ifdef __cplusplus
! 78: extern "C" {
! 79: #endif
! 80:
! 81:
! 82: /* Define wint_t. (Also done in wctype.in.h.) */
! 83: #if !@HAVE_WINT_T@ && !defined wint_t
! 84: # define wint_t int
! 85: # ifndef WEOF
! 86: # define WEOF -1
! 87: # endif
! 88: #endif
! 89:
! 90:
! 91: /* Override mbstate_t if it is too small.
! 92: On IRIX 6.5, sizeof (mbstate_t) == 1, which is not sufficient for
! 93: implementing mbrtowc for encodings like UTF-8. */
! 94: #if !(@HAVE_MBSINIT@ && @HAVE_MBRTOWC@) || @REPLACE_MBSTATE_T@
! 95: typedef int rpl_mbstate_t;
! 96: # undef mbstate_t
! 97: # define mbstate_t rpl_mbstate_t
! 98: # define GNULIB_defined_mbstate_t 1
! 99: #endif
! 100:
! 101:
! 102: /* Convert a single-byte character to a wide character. */
! 103: #if @GNULIB_BTOWC@
! 104: # if @REPLACE_BTOWC@
! 105: # undef btowc
! 106: # define btowc rpl_btowc
! 107: # endif
! 108: # if !@HAVE_BTOWC@ || @REPLACE_BTOWC@
! 109: extern wint_t btowc (int c);
! 110: # endif
! 111: #elif defined GNULIB_POSIXCHECK
! 112: # undef btowc
! 113: # define btowc(c) \
! 114: (GL_LINK_WARNING ("btowc is unportable - " \
! 115: "use gnulib module btowc for portability"), \
! 116: btowc (c))
! 117: #endif
! 118:
! 119:
! 120: /* Convert a wide character to a single-byte character. */
! 121: #if @GNULIB_WCTOB@
! 122: # if @REPLACE_WCTOB@
! 123: # undef wctob
! 124: # define wctob rpl_wctob
! 125: # endif
! 126: # if (!defined wctob && !@HAVE_DECL_WCTOB@) || @REPLACE_WCTOB@
! 127: /* wctob is provided by gnulib, or wctob exists but is not declared. */
! 128: extern int wctob (wint_t wc);
! 129: # endif
! 130: #elif defined GNULIB_POSIXCHECK
! 131: # undef wctob
! 132: # define wctob(w) \
! 133: (GL_LINK_WARNING ("wctob is unportable - " \
! 134: "use gnulib module wctob for portability"), \
! 135: wctob (w))
! 136: #endif
! 137:
! 138:
! 139: /* Test whether *PS is in the initial state. */
! 140: #if @GNULIB_MBSINIT@
! 141: # if @REPLACE_MBSINIT@
! 142: # undef mbsinit
! 143: # define mbsinit rpl_mbsinit
! 144: # endif
! 145: # if !@HAVE_MBSINIT@ || @REPLACE_MBSINIT@
! 146: extern int mbsinit (const mbstate_t *ps);
! 147: # endif
! 148: #elif defined GNULIB_POSIXCHECK
! 149: # undef mbsinit
! 150: # define mbsinit(p) \
! 151: (GL_LINK_WARNING ("mbsinit is unportable - " \
! 152: "use gnulib module mbsinit for portability"), \
! 153: mbsinit (p))
! 154: #endif
! 155:
! 156:
! 157: /* Convert a multibyte character to a wide character. */
! 158: #if @GNULIB_MBRTOWC@
! 159: # if @REPLACE_MBRTOWC@
! 160: # undef mbrtowc
! 161: # define mbrtowc rpl_mbrtowc
! 162: # endif
! 163: # if !@HAVE_MBRTOWC@ || @REPLACE_MBRTOWC@
! 164: extern size_t mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps);
! 165: # endif
! 166: #elif defined GNULIB_POSIXCHECK
! 167: # undef mbrtowc
! 168: # define mbrtowc(w,s,n,p) \
! 169: (GL_LINK_WARNING ("mbrtowc is unportable - " \
! 170: "use gnulib module mbrtowc for portability"), \
! 171: mbrtowc (w, s, n, p))
! 172: #endif
! 173:
! 174:
! 175: /* Recognize a multibyte character. */
! 176: #if @GNULIB_MBRLEN@
! 177: # if @REPLACE_MBRLEN@
! 178: # undef mbrlen
! 179: # define mbrlen rpl_mbrlen
! 180: # endif
! 181: # if !@HAVE_MBRLEN@ || @REPLACE_MBRLEN@
! 182: extern size_t mbrlen (const char *s, size_t n, mbstate_t *ps);
! 183: # endif
! 184: #elif defined GNULIB_POSIXCHECK
! 185: # undef mbrlen
! 186: # define mbrlen(s,n,p) \
! 187: (GL_LINK_WARNING ("mbrlen is unportable - " \
! 188: "use gnulib module mbrlen for portability"), \
! 189: mbrlen (s, n, p))
! 190: #endif
! 191:
! 192:
! 193: /* Convert a string to a wide string. */
! 194: #if @GNULIB_MBSRTOWCS@
! 195: # if @REPLACE_MBSRTOWCS@
! 196: # undef mbsrtowcs
! 197: # define mbsrtowcs rpl_mbsrtowcs
! 198: # endif
! 199: # if !@HAVE_MBSRTOWCS@ || @REPLACE_MBSRTOWCS@
! 200: extern size_t mbsrtowcs (wchar_t *dest, const char **srcp, size_t len, mbstate_t *ps);
! 201: # endif
! 202: #elif defined GNULIB_POSIXCHECK
! 203: # undef mbsrtowcs
! 204: # define mbsrtowcs(d,s,l,p) \
! 205: (GL_LINK_WARNING ("mbsrtowcs is unportable - " \
! 206: "use gnulib module mbsrtowcs for portability"), \
! 207: mbsrtowcs (d, s, l, p))
! 208: #endif
! 209:
! 210:
! 211: /* Convert a string to a wide string. */
! 212: #if @GNULIB_MBSNRTOWCS@
! 213: # if @REPLACE_MBSNRTOWCS@
! 214: # undef mbsnrtowcs
! 215: # define mbsnrtowcs rpl_mbsnrtowcs
! 216: # endif
! 217: # if !@HAVE_MBSNRTOWCS@ || @REPLACE_MBSNRTOWCS@
! 218: extern size_t mbsnrtowcs (wchar_t *dest, const char **srcp, size_t srclen, size_t len, mbstate_t *ps);
! 219: # endif
! 220: #elif defined GNULIB_POSIXCHECK
! 221: # undef mbsnrtowcs
! 222: # define mbsnrtowcs(d,s,n,l,p) \
! 223: (GL_LINK_WARNING ("mbsnrtowcs is unportable - " \
! 224: "use gnulib module mbsnrtowcs for portability"), \
! 225: mbsnrtowcs (d, s, n, l, p))
! 226: #endif
! 227:
! 228:
! 229: /* Convert a wide character to a multibyte character. */
! 230: #if @GNULIB_WCRTOMB@
! 231: # if @REPLACE_WCRTOMB@
! 232: # undef wcrtomb
! 233: # define wcrtomb rpl_wcrtomb
! 234: # endif
! 235: # if !@HAVE_WCRTOMB@ || @REPLACE_WCRTOMB@
! 236: extern size_t wcrtomb (char *s, wchar_t wc, mbstate_t *ps);
! 237: # endif
! 238: #elif defined GNULIB_POSIXCHECK
! 239: # undef wcrtomb
! 240: # define wcrtomb(s,w,p) \
! 241: (GL_LINK_WARNING ("wcrtomb is unportable - " \
! 242: "use gnulib module wcrtomb for portability"), \
! 243: wcrtomb (s, w, p))
! 244: #endif
! 245:
! 246:
! 247: /* Convert a wide string to a string. */
! 248: #if @GNULIB_WCSRTOMBS@
! 249: # if @REPLACE_WCSRTOMBS@
! 250: # undef wcsrtombs
! 251: # define wcsrtombs rpl_wcsrtombs
! 252: # endif
! 253: # if !@HAVE_WCSRTOMBS@ || @REPLACE_WCSRTOMBS@
! 254: extern size_t wcsrtombs (char *dest, const wchar_t **srcp, size_t len, mbstate_t *ps);
! 255: # endif
! 256: #elif defined GNULIB_POSIXCHECK
! 257: # undef wcsrtombs
! 258: # define wcsrtombs(d,s,l,p) \
! 259: (GL_LINK_WARNING ("wcsrtombs is unportable - " \
! 260: "use gnulib module wcsrtombs for portability"), \
! 261: wcsrtombs (d, s, l, p))
! 262: #endif
! 263:
! 264:
! 265: /* Convert a wide string to a string. */
! 266: #if @GNULIB_WCSNRTOMBS@
! 267: # if @REPLACE_WCSNRTOMBS@
! 268: # undef wcsnrtombs
! 269: # define wcsnrtombs rpl_wcsnrtombs
! 270: # endif
! 271: # if !@HAVE_WCSNRTOMBS@ || @REPLACE_WCSNRTOMBS@
! 272: extern size_t wcsnrtombs (char *dest, const wchar_t **srcp, size_t srclen, size_t len, mbstate_t *ps);
! 273: # endif
! 274: #elif defined GNULIB_POSIXCHECK
! 275: # undef wcsnrtombs
! 276: # define wcsnrtombs(d,s,n,l,p) \
! 277: (GL_LINK_WARNING ("wcsnrtombs is unportable - " \
! 278: "use gnulib module wcsnrtombs for portability"), \
! 279: wcsnrtombs (d, s, n, l, p))
! 280: #endif
! 281:
! 282:
! 283: /* Return the number of screen columns needed for WC. */
! 284: #if @GNULIB_WCWIDTH@
! 285: # if @REPLACE_WCWIDTH@
! 286: # undef wcwidth
! 287: # define wcwidth rpl_wcwidth
! 288: extern int wcwidth (wchar_t);
! 289: # else
! 290: # if !defined wcwidth && !@HAVE_DECL_WCWIDTH@
! 291: /* wcwidth exists but is not declared. */
! 292: extern int wcwidth (int /* actually wchar_t */);
! 293: # endif
! 294: # endif
! 295: #elif defined GNULIB_POSIXCHECK
! 296: # undef wcwidth
! 297: # define wcwidth(w) \
! 298: (GL_LINK_WARNING ("wcwidth is unportable - " \
! 299: "use gnulib module wcwidth for portability"), \
! 300: wcwidth (w))
! 301: #endif
! 302:
! 303:
! 304: #ifdef __cplusplus
! 305: }
! 306: #endif
! 307:
! 308: #endif /* _GL_WCHAR_H */
! 309: #endif /* _GL_WCHAR_H */
! 310: #endif
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