135 lines
3.6 KiB
C
135 lines
3.6 KiB
C
/* Copyright (C) 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <alloca.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "error.h"
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#include "charset.h"
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static void
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insert_char (struct linereader *lr, struct charset_t *cs, int bytes,
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unsigned int value, const char *from, const char *to);
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void
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charset_new_char (struct linereader *lr, struct charset_t *cs, int bytes,
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unsigned int value, const char *from, const char *to)
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{
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if (bytes < cs->mb_cur_min)
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lr_error (lr, _("too few bytes in character encoding"));
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else if (bytes > cs->mb_cur_max)
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lr_error (lr, _("too many bytes in character encoding"));
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else
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insert_char (lr, cs, bytes, value, from, to);
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}
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void
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charset_new_unicode (struct linereader *lr, struct charset_t *cs, int bytes,
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unsigned int value, const char *from, const char *to)
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{
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/* For now: perhaps <Uxxxx> support will be removed again... */
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insert_char (lr, cs, bytes, value, from, to);
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}
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unsigned int
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charset_find_value (const struct charset_t *cs, const char *name, size_t len)
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{
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void *result;
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if (find_entry ((hash_table *) &cs->char_table, name, len, &result) < 0)
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return ILLEGAL_CHAR_VALUE;
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return (unsigned int) ((unsigned long int) result);
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}
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static void
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insert_char (struct linereader *lr, struct charset_t *cs, int bytes,
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unsigned int value, const char *from, const char *to)
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{
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const char *cp;
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char *buf;
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int prefix_len, len1, len2;
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unsigned int from_nr, to_nr, cnt;
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if (to == NULL)
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{
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if (insert_entry (&cs->char_table, from, strlen (from),
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(void *) (unsigned long int) value)
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< 0)
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lr_error (lr, _("duplicate character name `%s'"), from);
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return;
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}
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/* We have a range: the names must have names with equal prefixes
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and an equal number of digits, where the second number is greater
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or equal than the first. */
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len1 = strlen (from);
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len2 = strlen (to);
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if (len1 != len2)
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{
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illegal_range:
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lr_error (lr, _("illegal names for character range"));
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return;
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}
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cp = &from[len1 - 1];
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while (isdigit (*cp) && cp >= from)
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--cp;
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prefix_len = (cp - from) + 1;
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if (cp == &from[len1 - 1] || strncmp (from, to, prefix_len) != 0)
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goto illegal_range;
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from_nr = strtoul (&from[prefix_len], NULL, 10);
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to_nr = strtoul (&to[prefix_len], NULL, 10);
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if (from_nr > to_nr)
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{
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lr_error (lr, _("upper limit in range is not smaller then lower limit"));
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return;
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}
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buf = alloca (len1 + 1);
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memcpy (buf, from, prefix_len);
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for (cnt = from_nr; cnt <= to_nr; ++cnt)
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{
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sprintf (&buf[prefix_len], "%0d", cnt);
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if (insert_entry (&cs->char_table, buf, len1,
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(void *) (unsigned long int) cnt) < 0)
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lr_error (lr, _("duplicate character name `%s'"), buf);
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}
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}
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