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maint: replace FSF snail-mail addresses with URLs * config/argz.mk, lib/accept4.c, lib/alignof.h, lib/alloca.in.h: * lib/alphasort.c, lib/arcfour.c, lib/arcfour.h, lib/arctwo.c: * lib/arctwo.h, lib/argz.c, lib/arpa_inet.in.h, lib/asnprintf.c: * lib/asprintf.c, lib/assert.in.h, lib/base32.c, lib/base32.h: * lib/base64.c, lib/base64.h, lib/c-ctype.c, lib/c-ctype.h: * lib/c-strcase.h, lib/c-strcasecmp.c, lib/c-strncasecmp.c: * lib/check-version.c, lib/check-version.h, lib/config.charset: * lib/ctype.in.h, lib/des.c, lib/des.h, lib/dup3.c, lib/errno.in.h: * lib/float+.h, lib/fnmatch.c, lib/fnmatch.in.h, lib/fnmatch_loop.c: * lib/fseeko.c, lib/gai_strerror.c, lib/gc-gnulib.c: * lib/gc-libgcrypt.c, lib/gc-pbkdf2-sha1.c, lib/gc.h: * lib/getaddrinfo.c, lib/getdelim.c, lib/getfilecon.c, lib/getline.c: * lib/getlogin_r.c, lib/getpass.c, lib/getpass.h, lib/gettext.h: * lib/gettimeofday.c, lib/glob.in.h, lib/glthread/cond.c: * lib/glthread/cond.h, lib/glthread/lock.c, lib/glthread/lock.h: * lib/glthread/thread.c, lib/glthread/thread.h: * lib/glthread/threadlib.c, lib/glthread/yield.h, lib/hmac-md5.c: * lib/hmac-sha1.c, lib/hmac.h, lib/iconv.c, lib/iconv.in.h: * lib/iconv_close.c, lib/iconv_open.c, lib/inet_ntop.c, lib/isfinite.c: * lib/isinf.c, lib/iswblank.c, lib/langinfo.in.h, lib/link.c: * lib/localcharset.c, lib/localcharset.h, lib/lseek.c, lib/malloc.c: * lib/malloca.c, lib/malloca.h, lib/md2.c, lib/md2.h, lib/md4.c: * lib/md4.h, lib/md5.c, lib/md5.h, lib/memmem.c, lib/mempcpy.c: * lib/memset.c, lib/memxor.c, lib/memxor.h, lib/minmax.h, lib/mktime.c: * lib/msvc-inval.c, lib/msvc-inval.h, lib/msvc-nothrow.c: * lib/msvc-nothrow.h, lib/netdb.in.h, lib/netinet_in.in.h, lib/nproc.c: * lib/nproc.h, lib/obstack_printf.c, lib/pathmax.h, lib/pipe.c: * lib/pipe2.c, lib/poll.c, lib/poll.in.h, lib/printf-args.c: * lib/printf-args.h, lib/printf-parse.c, lib/printf-parse.h: * lib/pselect.c, lib/pthread.in.h, lib/pty-private.h, lib/pty.in.h: * lib/read-file.c, lib/read-file.h, lib/ref-add.sin, lib/ref-del.sin: * lib/regcomp.c, lib/regex.c, lib/regex.h, lib/regex_internal.c: * lib/regex_internal.h, lib/regexec.c, lib/rijndael-alg-fst.c: * lib/rijndael-alg-fst.h, lib/rijndael-api-fst.c: * lib/rijndael-api-fst.h, lib/rint.c, lib/rintf.c, lib/rintl.c: * lib/round.c, lib/roundf.c, lib/roundl.c, lib/scandir.c, lib/select.c: * lib/sha1.c, lib/sha1.h, lib/size_max.h, lib/snprintf.c: * lib/stdalign.in.h, lib/stdarg.in.h, lib/stdbool.in.h: * lib/stddef.in.h, lib/stdint.in.h, lib/stdio.in.h, lib/str-kmp.h: * lib/str-two-way.h, lib/strcasecmp.c, lib/strcasestr.c, lib/strdup.c: * lib/striconv.c, lib/striconv.h, lib/string.in.h, lib/strings.in.h: * lib/strncasecmp.c, lib/strndup.c, lib/strnlen.c, lib/strpbrk.c: * lib/strptime.c, lib/strsep.c, lib/strstr.c, lib/strverscmp.c: * lib/sys_file.in.h, lib/sys_ioctl.in.h, lib/sys_select.in.h: * lib/sys_socket.in.h, lib/sys_stat.in.h, lib/sys_time.in.h: * lib/sys_times.in.h, lib/sys_types.in.h, lib/sys_uio.in.h: * lib/sys_utsname.in.h, lib/sys_wait.in.h, lib/tcgetsid.c: * lib/termios.in.h, lib/time.in.h, lib/time_r.c, lib/timegm.c: * lib/times.c, lib/unictype/3level.h, lib/unictype/3levelbit.h: * lib/unistd.in.h, lib/vasnprintf.c, lib/vasnprintf.h, lib/vasprintf.c: * lib/vsnprintf.c, lib/waitpid.c, lib/wchar.in.h, lib/wctype.in.h: * lib/xsize.h, tests/test-closein.c, tests/test-des.c: * tests/test-fclose.c, tests/test-fgetc.c, tests/test-filevercmp.c: * tests/test-fputc.c, tests/test-fread.c, tests/test-fwrite.c: * tests/test-gc-arcfour.c, tests/test-gc-arctwo.c, tests/test-gc-des.c: * tests/test-gc-hmac-md5.c, tests/test-gc-hmac-sha1.c: * tests/test-gc-md2.c, tests/test-gc-md4.c, tests/test-gc-md5.c: * tests/test-gc-pbkdf2-sha1.c, tests/test-gc-rijndael.c: * tests/test-gc-sha1.c, tests/test-gc.c, tests/test-getdelim.c: * tests/test-getline.c, tests/test-getndelim2.c, tests/test-md2.c: * tests/test-md4.c, tests/test-parse-datetime.c, tests/test-perror.c: * tests/test-perror2.c, tests/test-pipe.c, tests/test-pipe2.c: * tests/test-poll.c, tests/test-quotearg-simple.c: * tests/test-quotearg.c, tests/test-quotearg.h: * tests/test-round-ieee.c, tests/test-round1.c: * tests/test-roundf-ieee.c, tests/test-roundf1.c: * tests/test-roundl-ieee.c, tests/test-roundl.c: * tests/test-safe-alloc.c, tests/test-sigpipe.c: * tests/test-spawn-pipe-child.c, tests/test-spawn-pipe-main.c: * tests/test-strerror.c, tests/test-strerror_r.c: * tests/test-strsignal.c, tests/test-strverscmp.c: * tests/test-xmemdup0.c: Replace FSF snail mail addresses with URLs, as per GNU coding standards. See glibc bug <http://sourceware.org/bugzilla/show_bug.cgi?id=13673>.
author Paul Eggert <eggert@cs.ucla.edu>
date Thu, 09 Feb 2012 21:39:05 -0800
parents 8250f2777afc
children e542fd46ad6f
line wrap: on
line source

/* Character handling in C locale.

   Copyright 2000-2003, 2006, 2009-2012 Free Software Foundation, Inc.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.  */

#include <config.h>

/* Specification.  */
#define NO_C_CTYPE_MACROS
#include "c-ctype.h"

/* The function isascii is not locale dependent. Its use in EBCDIC is
   questionable. */
bool
c_isascii (int c)
{
  return (c >= 0x00 && c <= 0x7f);
}

bool
c_isalnum (int c)
{
#if C_CTYPE_CONSECUTIVE_DIGITS \
    && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
#if C_CTYPE_ASCII
  return ((c >= '0' && c <= '9')
          || ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'Z'));
#else
  return ((c >= '0' && c <= '9')
          || (c >= 'A' && c <= 'Z')
          || (c >= 'a' && c <= 'z'));
#endif
#else
  switch (c)
    {
    case '0': case '1': case '2': case '3': case '4': case '5':
    case '6': case '7': case '8': case '9':
    case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
    case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
    case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
    case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
    case 'Y': case 'Z':
    case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
    case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
    case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
    case 's': case 't': case 'u': case 'v': case 'w': case 'x':
    case 'y': case 'z':
      return 1;
    default:
      return 0;
    }
#endif
}

bool
c_isalpha (int c)
{
#if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
#if C_CTYPE_ASCII
  return ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'Z');
#else
  return ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'));
#endif
#else
  switch (c)
    {
    case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
    case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
    case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
    case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
    case 'Y': case 'Z':
    case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
    case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
    case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
    case 's': case 't': case 'u': case 'v': case 'w': case 'x':
    case 'y': case 'z':
      return 1;
    default:
      return 0;
    }
#endif
}

bool
c_isblank (int c)
{
  return (c == ' ' || c == '\t');
}

bool
c_iscntrl (int c)
{
#if C_CTYPE_ASCII
  return ((c & ~0x1f) == 0 || c == 0x7f);
#else
  switch (c)
    {
    case ' ': case '!': case '"': case '#': case '$': case '%':
    case '&': case '\'': case '(': case ')': case '*': case '+':
    case ',': case '-': case '.': case '/':
    case '0': case '1': case '2': case '3': case '4': case '5':
    case '6': case '7': case '8': case '9':
    case ':': case ';': case '<': case '=': case '>': case '?':
    case '@':
    case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
    case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
    case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
    case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
    case 'Y': case 'Z':
    case '[': case '\\': case ']': case '^': case '_': case '`':
    case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
    case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
    case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
    case 's': case 't': case 'u': case 'v': case 'w': case 'x':
    case 'y': case 'z':
    case '{': case '|': case '}': case '~':
      return 0;
    default:
      return 1;
    }
#endif
}

bool
c_isdigit (int c)
{
#if C_CTYPE_CONSECUTIVE_DIGITS
  return (c >= '0' && c <= '9');
#else
  switch (c)
    {
    case '0': case '1': case '2': case '3': case '4': case '5':
    case '6': case '7': case '8': case '9':
      return 1;
    default:
      return 0;
    }
#endif
}

bool
c_islower (int c)
{
#if C_CTYPE_CONSECUTIVE_LOWERCASE
  return (c >= 'a' && c <= 'z');
#else
  switch (c)
    {
    case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
    case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
    case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
    case 's': case 't': case 'u': case 'v': case 'w': case 'x':
    case 'y': case 'z':
      return 1;
    default:
      return 0;
    }
#endif
}

bool
c_isgraph (int c)
{
#if C_CTYPE_ASCII
  return (c >= '!' && c <= '~');
#else
  switch (c)
    {
    case '!': case '"': case '#': case '$': case '%': case '&':
    case '\'': case '(': case ')': case '*': case '+': case ',':
    case '-': case '.': case '/':
    case '0': case '1': case '2': case '3': case '4': case '5':
    case '6': case '7': case '8': case '9':
    case ':': case ';': case '<': case '=': case '>': case '?':
    case '@':
    case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
    case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
    case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
    case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
    case 'Y': case 'Z':
    case '[': case '\\': case ']': case '^': case '_': case '`':
    case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
    case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
    case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
    case 's': case 't': case 'u': case 'v': case 'w': case 'x':
    case 'y': case 'z':
    case '{': case '|': case '}': case '~':
      return 1;
    default:
      return 0;
    }
#endif
}

bool
c_isprint (int c)
{
#if C_CTYPE_ASCII
  return (c >= ' ' && c <= '~');
#else
  switch (c)
    {
    case ' ': case '!': case '"': case '#': case '$': case '%':
    case '&': case '\'': case '(': case ')': case '*': case '+':
    case ',': case '-': case '.': case '/':
    case '0': case '1': case '2': case '3': case '4': case '5':
    case '6': case '7': case '8': case '9':
    case ':': case ';': case '<': case '=': case '>': case '?':
    case '@':
    case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
    case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
    case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
    case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
    case 'Y': case 'Z':
    case '[': case '\\': case ']': case '^': case '_': case '`':
    case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
    case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
    case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
    case 's': case 't': case 'u': case 'v': case 'w': case 'x':
    case 'y': case 'z':
    case '{': case '|': case '}': case '~':
      return 1;
    default:
      return 0;
    }
#endif
}

bool
c_ispunct (int c)
{
#if C_CTYPE_ASCII
  return ((c >= '!' && c <= '~')
          && !((c >= '0' && c <= '9')
               || ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'Z')));
#else
  switch (c)
    {
    case '!': case '"': case '#': case '$': case '%': case '&':
    case '\'': case '(': case ')': case '*': case '+': case ',':
    case '-': case '.': case '/':
    case ':': case ';': case '<': case '=': case '>': case '?':
    case '@':
    case '[': case '\\': case ']': case '^': case '_': case '`':
    case '{': case '|': case '}': case '~':
      return 1;
    default:
      return 0;
    }
#endif
}

bool
c_isspace (int c)
{
  return (c == ' ' || c == '\t'
          || c == '\n' || c == '\v' || c == '\f' || c == '\r');
}

bool
c_isupper (int c)
{
#if C_CTYPE_CONSECUTIVE_UPPERCASE
  return (c >= 'A' && c <= 'Z');
#else
  switch (c)
    {
    case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
    case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
    case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
    case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
    case 'Y': case 'Z':
      return 1;
    default:
      return 0;
    }
#endif
}

bool
c_isxdigit (int c)
{
#if C_CTYPE_CONSECUTIVE_DIGITS \
    && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
#if C_CTYPE_ASCII
  return ((c >= '0' && c <= '9')
          || ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'F'));
#else
  return ((c >= '0' && c <= '9')
          || (c >= 'A' && c <= 'F')
          || (c >= 'a' && c <= 'f'));
#endif
#else
  switch (c)
    {
    case '0': case '1': case '2': case '3': case '4': case '5':
    case '6': case '7': case '8': case '9':
    case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
    case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
      return 1;
    default:
      return 0;
    }
#endif
}

int
c_tolower (int c)
{
#if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
  return (c >= 'A' && c <= 'Z' ? c - 'A' + 'a' : c);
#else
  switch (c)
    {
    case 'A': return 'a';
    case 'B': return 'b';
    case 'C': return 'c';
    case 'D': return 'd';
    case 'E': return 'e';
    case 'F': return 'f';
    case 'G': return 'g';
    case 'H': return 'h';
    case 'I': return 'i';
    case 'J': return 'j';
    case 'K': return 'k';
    case 'L': return 'l';
    case 'M': return 'm';
    case 'N': return 'n';
    case 'O': return 'o';
    case 'P': return 'p';
    case 'Q': return 'q';
    case 'R': return 'r';
    case 'S': return 's';
    case 'T': return 't';
    case 'U': return 'u';
    case 'V': return 'v';
    case 'W': return 'w';
    case 'X': return 'x';
    case 'Y': return 'y';
    case 'Z': return 'z';
    default: return c;
    }
#endif
}

int
c_toupper (int c)
{
#if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE
  return (c >= 'a' && c <= 'z' ? c - 'a' + 'A' : c);
#else
  switch (c)
    {
    case 'a': return 'A';
    case 'b': return 'B';
    case 'c': return 'C';
    case 'd': return 'D';
    case 'e': return 'E';
    case 'f': return 'F';
    case 'g': return 'G';
    case 'h': return 'H';
    case 'i': return 'I';
    case 'j': return 'J';
    case 'k': return 'K';
    case 'l': return 'L';
    case 'm': return 'M';
    case 'n': return 'N';
    case 'o': return 'O';
    case 'p': return 'P';
    case 'q': return 'Q';
    case 'r': return 'R';
    case 's': return 'S';
    case 't': return 'T';
    case 'u': return 'U';
    case 'v': return 'V';
    case 'w': return 'W';
    case 'x': return 'X';
    case 'y': return 'Y';
    case 'z': return 'Z';
    default: return c;
    }
#endif
}