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2b83a2a4d9
Merged 1003.2 locale and localedef programs by Ulrich Drepper. * locale/charmap.c: New file. * locale/collate.c: New file. * locale/config.h: New file. * locale/ctype.c: New file. * locale/ctypedump.c: New file. * locale/hash.c: New file. * locale/hash.h: New file. * locale/iso-4217.def: New file. * locale/keyword.gperf: New file. * locale/keyword.h: New file. * locale/libintl.h: New file. * locale/locale.c: New file. * locale/localedef.c: New file. * locale/localedef.h: New file. * locale/locfile-lex.c: New file. * locale/locfile-parse.c: New file. * locale/messages.c: New file. * locale/monetary.c: New file. * locale/numeric.c: New file. * locale/token.h: New file. * posix/regex.c, posix/regex.h: New files, incorporated from GNU regex. * posix/Makefile (headers): Add regex.h. (routines): Add regex. (gpl2lgpl): Add regex.c and regex.h. Tue May 16 17:35:07 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * locale/loadlocale.c: Expect macro LOCALE_PATH to be defined, instead of hard-coding "/share/locale".
525 lines
13 KiB
C
525 lines
13 KiB
C
/* Copyright (C) 1995 Free Software Foundation, Inc.
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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., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ctype.h>
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#include <errno.h>
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#include <libintl.h>
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#include <limits.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 <unistd.h>
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#include "localedef.h"
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#include "hash.h"
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/* Data structure for representing charmap database. */
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struct charmap charmap_data;
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/* Line number in charmap file. */
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static unsigned int line_no;
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/* Prototypes for local functions. */
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static void read_prolog (FILE *infile);
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static unsigned long read_body (FILE *infile);
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/* Read complete table of symbolic names for character set from file. If
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this file does not exist or is not readable a default file is tried.
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If this also is not readable no character map is defined. */
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void
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charmap_read (const char *filename)
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{
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unsigned long max_char;
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long path_max = pathconf (".", _PC_PATH_MAX);
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char buf[path_max];
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FILE *infile = NULL;
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/* Initialize charmap data. */
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charmap_data.codeset_name = NULL;
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charmap_data.mb_cur_max = -1;
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charmap_data.mb_cur_min = -1;
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charmap_data.escape_char = '\\';
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charmap_data.comment_char = '#';
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if (filename != NULL)
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{
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strcpy (buf, filename);
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infile = fopen (filename, "r");
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if (infile == NULL && filename[0] != '/')
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{
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snprintf (buf, path_max, "%s/%s", CHARMAP_PATH, filename);
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infile = fopen (buf, "r");
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}
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}
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if (infile == NULL)
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{
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if (filename != NULL)
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error (0, errno, gettext ("input file `%s' not found"), filename);
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snprintf (buf, path_max, "%s/%s", CHARMAP_PATH, DEFAULT_CHARMAP);
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infile = fopen (buf, "r");
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if (infile == NULL)
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error (4, errno, gettext ("input file `%s' not found"), filename);
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}
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charmap_data.filename = buf;
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init_hash (&charmap_data.table, 500);
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line_no = 0;
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/* Read the prolog of the charmap file. */
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read_prolog (infile);
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/* Last works on the charmap tables global data. */
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if (charmap_data.mb_cur_max == -1)
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charmap_data.mb_cur_max = 1;
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if (charmap_data.mb_cur_min == -1)
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charmap_data.mb_cur_min = charmap_data.mb_cur_max;
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if ((size_t) charmap_data.mb_cur_max > sizeof (long))
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{
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error (2, 0, gettext ("program limitation: for now only upto %Zu "
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"bytes per character are allowed"), sizeof (long));
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}
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/* Now process all entries. */
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max_char = read_body (infile);
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/* We don't need the file anymore. */
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fclose (infile);
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/* Determine the optimal table size when using the simple modulo hashing
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function. */
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if (max_char >= 256)
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{
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int size;
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/* Current best values, initialized to some never reached high value. */
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int best_count = 10000;
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int best_size = 10000;
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int best_product = best_count * best_size;
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/* Give warning. */
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error (-1, 0, gettext ("computing character table size: this may take "
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"a while"));
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for (size = 256; size <= best_product; ++size)
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{
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/* Array with slot counters. */
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int cnt[size];
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/* Current character. */
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int ch;
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/* Maximal number of characters in any slot. */
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int maxcnt = 0;
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/* Product of current size and maximal count. */
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int product = 0;
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/* Iteration pointer through hashing table. */
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char *ptr = NULL;
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/* Initializes counters to zero. */
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memset(cnt, 0, size * sizeof (int));
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/* Iterate through whole hashing table. */
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while (product < best_product
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&& iterate_table (&charmap_data.table, (void **) &ptr,
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(void **) &ch))
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{
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/* Increment slot counter. */
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++cnt[ch % size];
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/* Test for current maximum. */
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if (cnt[ch % size] > maxcnt)
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{
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maxcnt = cnt[ch % size];
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product = maxcnt * size;
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}
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}
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if (product < best_product)
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{
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best_count = maxcnt;
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best_size = size;
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best_product = best_count * best_size;
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}
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}
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charmap_data.hash_size = best_size;
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charmap_data.hash_layers = best_count;
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}
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else
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{
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charmap_data.hash_size = 256;
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charmap_data.hash_layers = 1;
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}
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}
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#define SYNTAX_ERROR \
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do { error (0, 0, gettext ("%s:%u: syntax error in charmap file"), \
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charmap_data.filename, line_no); \
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goto end_of_loop; } while (0)
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/* Read the prolog of the charmap file until the line containing `CHARMAP'.
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All possible entries are processed. */
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static void
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read_prolog (FILE *infile)
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{
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size_t bufsize = sysconf (_SC_LINE_MAX);
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char buf[bufsize];
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while (1)
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{
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char *cp = buf;
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char len;
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/* Read the next line. */
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fgets (buf, bufsize, infile);
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len = strlen (buf);
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/* On EOF simply return. */
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if (len == 0 || buf[len - 1] != '\n')
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error (4, 0, gettext ("%s: unexpected end of file in charmap"),
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charmap_data.filename);
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/* This is the next line. */
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++line_no;
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/* Comments and empty lines are ignored. */
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if (len == 1 || buf[0] == charmap_data.comment_char)
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continue;
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buf[len - 1] = '\0';
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/* Throw away leading white spaces. This is not defined in POSIX.2
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so don't do it if conformance is requested. */
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if (!posix_conformance)
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while (isspace (*cp))
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++cp;
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/* If `CHARMAP' is read the prolog is over. */
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if (strncmp (cp, "CHARMAP", 7) == 0
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&& (!posix_conformance || cp[7] == '\0'))
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return;
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/* Now it can be only one of special symbols defining the charmap
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parameters. All are beginning with '<'. */
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if (*cp != '<')
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SYNTAX_ERROR;
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++cp;
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if (strncmp (cp, "code_set_name>", 14) == 0)
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{
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char *startp;
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#define cp_to_arg(no,pred) \
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cp += no; \
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while (isspace (*cp)) \
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++cp; \
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if (*cp == '\0' || !pred (*cp)) \
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SYNTAX_ERROR;
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cp_to_arg (14,isgraph)
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if (charmap_data.codeset_name != NULL)
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{
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error (0, 0, gettext ("%s:%u: duplicate code set name "
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"specification"),
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charmap_data.filename, line_no);
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free (charmap_data.codeset_name);
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}
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startp = cp;
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while (*cp != '\0' && isgraph (*cp) && !isspace (*cp))
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++cp;
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charmap_data.codeset_name = (char *) xmalloc (cp - startp + 1);
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strncpy (startp, startp, cp - startp);
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}
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else if (strncmp (cp, "mb_cur_max>", 11) == 0)
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{
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int new_val;
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cp_to_arg (11,isdigit)
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if (charmap_data.mb_cur_max != -1)
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error (0, 0,
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gettext ("%s:%u: duplicate definition of mb_cur_max"),
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charmap_data.filename, line_no);
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new_val = (int) strtol (cp, &cp, posix_conformance ? 10 : 0);
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if (new_val < 1)
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error (0, 0, gettext ("%s:%u: illegal value for mb_cur_max: %d"),
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charmap_data.filename, line_no, new_val);
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else
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charmap_data.mb_cur_max = new_val;
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}
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else if (strncmp (cp, "mb_cur_min>", 11) == 0)
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{
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int new_val;
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cp_to_arg (11,isdigit)
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if (charmap_data.mb_cur_max != -1)
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error (0, 0,
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gettext ("%s:%u: duplicate definition of mb_cur_min"),
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charmap_data.filename, line_no);
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new_val = (int) strtol (cp, &cp, posix_conformance ? 10 : 0);
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if (new_val < 1)
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error (0, 0, gettext ("%s:%u: illegal value for mb_cur_min: %d"),
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charmap_data.filename, line_no, new_val);
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else
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charmap_data.mb_cur_min = new_val;
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}
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else if (strncmp (cp, "escape_char>", 12) == 0)
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{
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cp_to_arg (12, isgraph)
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charmap_data.escape_char = *cp;
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}
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else if (strncmp (cp, "comment_char>", 13) == 0)
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{
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cp_to_arg (13, isgraph)
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charmap_data.comment_char = *cp;
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}
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else
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SYNTAX_ERROR;
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end_of_loop:
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}
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}
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#undef cp_to_arg
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static unsigned long
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read_body (FILE *infile)
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{
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unsigned long max_char = 0;
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size_t bufsize = sysconf (_SC_LINE_MAX);
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char buf[bufsize];
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char name_str[bufsize / 2];
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char code_str[bufsize / 2];
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while (1)
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{
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char *cp = buf;
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size_t len;
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/* Read the next line. */
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fgets (buf, bufsize, infile);
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len = strlen (buf);
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/* On EOF simply return. */
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if (len == 0)
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error (0, 0, gettext ("%s: `END CHARMAP' is missing"),
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charmap_data.filename);
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/* This is the next line. */
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++line_no;
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if (len == bufsize - 1)
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{
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error (0, 0, gettext ("%s:%u: line too long; use `getconf "
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"LINE_MAX' to get the current maximum line"
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"length"), charmap_data.filename, line_no);
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do
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{
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fgets (buf, bufsize, infile);
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len = strlen (buf);
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}
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while (len == bufsize - 1);
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continue;
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}
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/* Comments and empty lines are ignored. */
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if (len == 1 || buf[0] == charmap_data.comment_char)
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continue;
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buf[len - 1] = '\0';
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/* Throw away leading white spaces. This is not defined in POSIX.2
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so don't do it if conformance is requested. */
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if (!posix_conformance)
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while (isspace (*cp))
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++cp;
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if (*cp == '<')
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{
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char *end1p, *end2p, *start2p;
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size_t cnt = 0;
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unsigned long char_value = 0;
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if (sscanf (cp + 1, "%s %s", name_str, code_str) != 2)
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SYNTAX_ERROR;
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end1p = cp = name_str;
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while (*cp != '\0' && *cp != '>')
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{
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if (*cp == charmap_data.escape_char)
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if (*++cp == '\0')
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SYNTAX_ERROR;
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*end1p++ = *cp++;
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}
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if (*cp == '\0')
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/* No final '>'. Make error condition. */
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end1p = name_str;
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else
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++cp;
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*end1p = '\0';
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if (*cp == '.' && *++cp == '.' && *++cp == '.' && *++cp == '<')
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{
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/* This might be the alternate form. */
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start2p = end2p = ++cp;
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while (*cp != '\0' && *cp != '>')
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{
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if (*cp == charmap_data.escape_char)
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if (*++cp == '\0')
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SYNTAX_ERROR;
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*end2p = *cp++;
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}
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if (*cp == '\0')
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/* NO final '>'. Make error condition. */
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end2p = start2p;
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else
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++cp;
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}
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else
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start2p = end2p = NULL;
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if (end1p == name_str || (start2p != NULL && start2p != end2p)
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|| *cp != '\0'
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|| *code_str != charmap_data.escape_char)
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SYNTAX_ERROR;
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cp = code_str;
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do
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{
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char *begin;
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long val;
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switch (*++cp)
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{
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case 'd':
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val = strtol ((begin = cp + 1), &cp, 10);
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break;
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case 'x':
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val = strtol ((begin = cp + 1), &cp, 16);
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break;
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default:
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val = strtol ((begin = cp), &cp, 8);
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break;
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}
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if (begin == cp)
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SYNTAX_ERROR;
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if (posix_conformance && cp - begin < 2)
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error (0, 0, gettext ("%s:%u: byte constant has less than "
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"two digits"),
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charmap_data.filename, line_no);
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if (val < 0 || val > 255)
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{
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error (0, 0, gettext ("%s:%u: character encoding must be "
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"given in 8-bit bytes"),
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charmap_data.filename, line_no);
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goto end_of_loop;
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}
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if (cnt < (size_t) charmap_data.mb_cur_max)
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{
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if (cnt < sizeof (long)) /* FIXME */
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char_value = (char_value << 8) | val;
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}
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else
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{
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error (0, 0, gettext ("%s:%u: number of bytes in character "
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"definition exceeds `mb_cur_max'"),
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charmap_data.filename, line_no);
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break;
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}
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++cnt;
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}
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while (*cp == charmap_data.escape_char);
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/* Ignore the rest of the line (comment). */
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if (end2p == NULL)
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{
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if (insert_entry (&charmap_data.table, name_str,
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end1p - name_str, (void *) char_value))
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error (0, 0, gettext ("%s:%u: duplicate entry"),
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charmap_data.filename, line_no);
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max_char = MAX (max_char, char_value);
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}
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else
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{
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char *en1, *en2, *start1p;
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long n1, n2, n;
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start1p = name_str;
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while (*start1p == *start2p && !isdigit (*start1p)
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&& start1p < end1p)
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++start1p, ++start2p;
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n1 = strtol (start1p, &en1, 10);
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n2 = strtol (start2p, &en2, 10);
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if (en1 - start1p != en2 - start2p || en1 != end1p
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|| en2 != end2p)
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SYNTAX_ERROR;
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if (n1 > n2)
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error (0, 0, gettext ("%s:%u: starting character is bigger "
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"than last"),
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charmap_data.filename, line_no);
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n = n1;
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while (n <= n2)
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{
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snprintf(start1p, en1 - start1p, "%0*d", en1 - start1p, n);
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if (insert_entry (&charmap_data.table, name_str,
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en1 - name_str,
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(void *) (char_value + n - n1)))
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error (0, 0, gettext ("%s:%u: duplicate entry"),
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charmap_data.filename, line_no);
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max_char = MAX (max_char, char_value + n - n1);
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++n;
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}
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}
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}
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else
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{
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if (strncmp (cp, "END CHARMAP", 11) == 0)
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return max_char;
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SYNTAX_ERROR;
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}
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end_of_loop:
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}
|
|
|
|
return max_char;
|
|
}
|
|
|
|
/*
|
|
* Local Variables:
|
|
* mode:c
|
|
* c-basic-offset:2
|
|
* End:
|
|
*/
|