diff options
Diffstat (limited to 'lib/libc/locale/rune.c')
-rw-r--r-- | lib/libc/locale/rune.c | 334 |
1 files changed, 334 insertions, 0 deletions
diff --git a/lib/libc/locale/rune.c b/lib/libc/locale/rune.c new file mode 100644 index 0000000..b239484 --- /dev/null +++ b/lib/libc/locale/rune.c @@ -0,0 +1,334 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Paul Borman at Krystal Technologies. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)rune.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/types.h> +#include <sys/stat.h> + +#include <ctype.h> +#include <errno.h> +#include <limits.h> +#include <rune.h> +#include <stdio.h> +#include <stdlib.h> + +extern int _none_init __P((_RuneLocale *)); +extern int _UTF2_init __P((_RuneLocale *)); +extern int _EUC_init __P((_RuneLocale *)); +static _RuneLocale *_Read_RuneMagi __P((FILE *)); + +static char *PathLocale = 0; + +int +setrunelocale(encoding) + char *encoding; +{ + FILE *fp; + char name[PATH_MAX]; + _RuneLocale *rl; + + if (!encoding) + return(EFAULT); + + /* + * The "C" and "POSIX" locale are always here. + */ + if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) { + _CurrentRuneLocale = &_DefaultRuneLocale; + return(0); + } + + if (!PathLocale && !(PathLocale = getenv("PATH_LOCALE"))) + PathLocale = _PATH_LOCALE; + + sprintf(name, "%s/%s/LC_CTYPE", PathLocale, encoding); + + if ((fp = fopen(name, "r")) == NULL) + return(ENOENT); + + if ((rl = _Read_RuneMagi(fp)) == 0) { + fclose(fp); + return(EFTYPE); + } + + if (!rl->encoding[0] || !strcmp(rl->encoding, "UTF2")) { + return(_UTF2_init(rl)); + } else if (!strcmp(rl->encoding, "NONE")) { + return(_none_init(rl)); + } else if (!strcmp(rl->encoding, "EUC")) { + return(_EUC_init(rl)); + } else + return(EINVAL); +} + +void +setinvalidrune(ir) + rune_t ir; +{ + _INVALID_RUNE = ir; +} + +static _RuneLocale * +_Read_RuneMagi(fp) + FILE *fp; +{ + char *data; + void *np; + void *lastp; + _RuneLocale *rl; + _RuneEntry *rr; + struct stat sb; + int x; + + if (fstat(fileno(fp), &sb) < 0) + return(0); + + if (sb.st_size < sizeof(_RuneLocale)) + return(0); + + if ((data = malloc(sb.st_size)) == NULL) + return(0); + + rewind(fp); /* Someone might have read the magic number once already */ + + if (fread(data, sb.st_size, 1, fp) != 1) { + free(data); + return(0); + } + + rl = (_RuneLocale *)data; + lastp = data + sb.st_size; + + rl->variable = rl + 1; + + if (memcmp(rl->magic, _RUNE_MAGIC_1, sizeof(rl->magic))) { + free(data); + return(0); + } + + rl->invalid_rune = ntohl(rl->invalid_rune); + rl->variable_len = ntohl(rl->variable_len); + rl->runetype_ext.nranges = ntohl(rl->runetype_ext.nranges); + rl->maplower_ext.nranges = ntohl(rl->maplower_ext.nranges); + rl->mapupper_ext.nranges = ntohl(rl->mapupper_ext.nranges); + + for (x = 0; x < _CACHED_RUNES; ++x) { + rl->runetype[x] = ntohl(rl->runetype[x]); + rl->maplower[x] = ntohl(rl->maplower[x]); + rl->mapupper[x] = ntohl(rl->mapupper[x]); + } + + rl->runetype_ext.ranges = (_RuneEntry *)rl->variable; + rl->variable = rl->runetype_ext.ranges + rl->runetype_ext.nranges; + if (rl->variable > lastp) { + free(data); + return(0); + } + + rl->maplower_ext.ranges = (_RuneEntry *)rl->variable; + rl->variable = rl->maplower_ext.ranges + rl->maplower_ext.nranges; + if (rl->variable > lastp) { + free(data); + return(0); + } + + rl->mapupper_ext.ranges = (_RuneEntry *)rl->variable; + rl->variable = rl->mapupper_ext.ranges + rl->mapupper_ext.nranges; + if (rl->variable > lastp) { + free(data); + return(0); + } + + for (x = 0; x < rl->runetype_ext.nranges; ++x) { + rr = rl->runetype_ext.ranges; + + rr[x].min = ntohl(rr[x].min); + rr[x].max = ntohl(rr[x].max); + if ((rr[x].map = ntohl(rr[x].map)) == 0) { + int len = rr[x].max - rr[x].min + 1; + rr[x].types = rl->variable; + rl->variable = rr[x].types + len; + if (rl->variable > lastp) { + free(data); + return(0); + } + while (len-- > 0) + rr[x].types[len] = ntohl(rr[x].types[len]); + } else + rr[x].types = 0; + } + + for (x = 0; x < rl->maplower_ext.nranges; ++x) { + rr = rl->maplower_ext.ranges; + + rr[x].min = ntohl(rr[x].min); + rr[x].max = ntohl(rr[x].max); + rr[x].map = ntohl(rr[x].map); + } + + for (x = 0; x < rl->mapupper_ext.nranges; ++x) { + rr = rl->mapupper_ext.ranges; + + rr[x].min = ntohl(rr[x].min); + rr[x].max = ntohl(rr[x].max); + rr[x].map = ntohl(rr[x].map); + } + if (((char *)rl->variable) + rl->variable_len > (char *)lastp) { + free(data); + return(0); + } + + /* + * Go out and zero pointers that should be zero. + */ + if (!rl->variable_len) + rl->variable = 0; + + if (!rl->runetype_ext.nranges) + rl->runetype_ext.ranges = 0; + + if (!rl->maplower_ext.nranges) + rl->maplower_ext.ranges = 0; + + if (!rl->mapupper_ext.nranges) + rl->mapupper_ext.ranges = 0; + + return(rl); +} + +unsigned long +___runetype(c) + _BSD_RUNE_T_ c; +{ + int x; + _RuneRange *rr = &_CurrentRuneLocale->runetype_ext; + _RuneEntry *re = rr->ranges; + + if (c == EOF) + return(0); + for (x = 0; x < rr->nranges; ++x, ++re) { + if (c < re->min) + return(0L); + if (c <= re->max) { + if (re->types) + return(re->types[c - re->min]); + else + return(re->map); + } + } + return(0L); +} + +_BSD_RUNE_T_ +___toupper(c) + _BSD_RUNE_T_ c; +{ + int x; + _RuneRange *rr = &_CurrentRuneLocale->mapupper_ext; + _RuneEntry *re = rr->ranges; + + if (c == EOF) + return(EOF); + for (x = 0; x < rr->nranges; ++x, ++re) { + if (c < re->min) + return(c); + if (c <= re->max) + return(re->map + c - re->min); + } + return(c); +} + +_BSD_RUNE_T_ +___tolower(c) + _BSD_RUNE_T_ c; +{ + int x; + _RuneRange *rr = &_CurrentRuneLocale->maplower_ext; + _RuneEntry *re = rr->ranges; + + if (c == EOF) + return(EOF); + for (x = 0; x < rr->nranges; ++x, ++re) { + if (c < re->min) + return(c); + if (c <= re->max) + return(re->map + c - re->min); + } + return(c); +} + + +#if !defined(_USE_CTYPE_INLINE_) && !defined(_USE_CTYPE_MACROS_) +/* + * See comments in <machine/ansi.h> + */ +int +__istype(c, f) + _BSD_RUNE_T_ c; + unsigned long f; +{ + return ((((c & _CRMASK) ? ___runetype(c) + : _CurrentRuneLocale->runetype[c]) & f) ? 1 : 0); +} + +int +__isctype(_BSD_RUNE_T_ c, unsigned long f) + _BSD_RUNE_T_ c; + unsigned long f; +{ + return ((((c & _CRMASK) ? 0 + : _DefaultRuneLocale.runetype[c]) & f) ? 1 : 0); +} + +_BSD_RUNE_T_ +toupper(c) + _BSD_RUNE_T_ c; +{ + return ((c & _CRMASK) ? + ___toupper(c) : _CurrentRuneLocale->mapupper[c]); +} + +_BSD_RUNE_T_ +tolower(c) + _BSD_RUNE_T_ c; +{ + return ((c & _CRMASK) ? + ___tolower(c) : _CurrentRuneLocale->maplower[c]); +} +#endif |