glibc/locale/programs/ld-numeric.c

341 lines
9.8 KiB
C

/* Copyright (C) 1995-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.org>, 1995.
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; 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/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <langinfo.h>
#include <string.h>
#include <stdint.h>
#include <sys/uio.h>
#include <assert.h>
#include "localedef.h"
#include "linereader.h"
#include "localeinfo.h"
#include "locfile.h"
/* The real definition of the struct for the LC_NUMERIC locale. */
struct locale_numeric_t
{
const char *decimal_point;
const char *thousands_sep;
char *grouping;
size_t grouping_len;
uint32_t decimal_point_wc;
uint32_t thousands_sep_wc;
};
static void
numeric_startup (struct linereader *lr, struct localedef_t *locale,
int ignore_content)
{
if (!ignore_content)
{
locale->categories[LC_NUMERIC].numeric =
(struct locale_numeric_t *) xcalloc (1,
sizeof (struct locale_numeric_t));
}
if (lr != NULL)
{
lr->translate_strings = 1;
lr->return_widestr = 0;
}
}
void
numeric_finish (struct localedef_t *locale, const struct charmap_t *charmap)
{
struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
int nothing = 0;
/* Now resolve copying and also handle completely missing definitions. */
if (numeric == NULL)
{
/* First see whether we were supposed to copy. If yes, find the
actual definition. */
if (locale->copy_name[LC_NUMERIC] != NULL)
{
/* Find the copying locale. This has to happen transitively since
the locale we are copying from might also copying another one. */
struct localedef_t *from = locale;
do
from = find_locale (LC_NUMERIC, from->copy_name[LC_NUMERIC],
from->repertoire_name, charmap);
while (from->categories[LC_NUMERIC].numeric == NULL
&& from->copy_name[LC_NUMERIC] != NULL);
numeric = locale->categories[LC_NUMERIC].numeric
= from->categories[LC_NUMERIC].numeric;
}
/* If there is still no definition issue an warning and create an
empty one. */
if (numeric == NULL)
{
if (! be_quiet)
WITH_CUR_LOCALE (error (0, 0, _("\
No definition for %s category found"), "LC_NUMERIC"));
numeric_startup (NULL, locale, 0);
numeric = locale->categories[LC_NUMERIC].numeric;
nothing = 1;
}
}
/* The decimal point must not be empty. This is not said explicitly
in POSIX but ANSI C (ISO/IEC 9899) says in 4.4.2.1 it has to be
!= "". */
if (numeric->decimal_point == NULL)
{
if (! be_quiet && ! nothing)
WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
"LC_NUMERIC", "decimal_point"));
numeric->decimal_point = ".";
}
else if (numeric->decimal_point[0] == '\0' && ! be_quiet && ! nothing)
{
WITH_CUR_LOCALE (error (0, 0, _("\
%s: value for field `%s' must not be an empty string"),
"LC_NUMERIC", "decimal_point"));
}
if (numeric->decimal_point_wc == L'\0')
numeric->decimal_point_wc = L'.';
if (numeric->grouping_len == 0 && ! be_quiet && ! nothing)
WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
"LC_NUMERIC", "grouping"));
}
void
numeric_output (struct localedef_t *locale, const struct charmap_t *charmap,
const char *output_path)
{
struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
struct locale_file file;
init_locale_data (&file, _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC));
add_locale_string (&file, numeric->decimal_point ?: "");
add_locale_string (&file, numeric->thousands_sep ?: "");
add_locale_raw_data (&file, numeric->grouping, numeric->grouping_len);
add_locale_uint32 (&file, numeric->decimal_point_wc);
add_locale_uint32 (&file, numeric->thousands_sep_wc);
add_locale_string (&file, charmap->code_set_name);
write_locale_data (output_path, LC_NUMERIC, "LC_NUMERIC", &file);
}
/* The parser for the LC_NUMERIC section of the locale definition. */
void
numeric_read (struct linereader *ldfile, struct localedef_t *result,
const struct charmap_t *charmap, const char *repertoire_name,
int ignore_content)
{
struct repertoire_t *repertoire = NULL;
struct locale_numeric_t *numeric;
struct token *now;
enum token_t nowtok;
/* Get the repertoire we have to use. */
if (repertoire_name != NULL)
repertoire = repertoire_read (repertoire_name);
/* The rest of the line containing `LC_NUMERIC' must be free. */
lr_ignore_rest (ldfile, 1);
do
{
now = lr_token (ldfile, charmap, result, NULL, verbose);
nowtok = now->tok;
}
while (nowtok == tok_eol);
/* If we see `copy' now we are almost done. */
if (nowtok == tok_copy)
{
handle_copy (ldfile, charmap, repertoire_name, result, tok_lc_numeric,
LC_NUMERIC, "LC_NUMERIC", ignore_content);
return;
}
/* Prepare the data structures. */
numeric_startup (ldfile, result, ignore_content);
numeric = result->categories[LC_NUMERIC].numeric;
while (1)
{
/* Of course we don't proceed beyond the end of file. */
if (nowtok == tok_eof)
break;
/* Ingore empty lines. */
if (nowtok == tok_eol)
{
now = lr_token (ldfile, charmap, result, NULL, verbose);
nowtok = now->tok;
continue;
}
switch (nowtok)
{
#define STR_ELEM(cat) \
case tok_##cat: \
/* Ignore the rest of the line if we don't need the input of \
this line. */ \
if (ignore_content) \
{ \
lr_ignore_rest (ldfile, 0); \
break; \
} \
\
ldfile->return_widestr = 1; \
now = lr_token (ldfile, charmap, result, repertoire, verbose); \
if (now->tok != tok_string) \
goto err_label; \
if (numeric->cat != NULL) \
lr_error (ldfile, _("\
%s: field `%s' declared more than once"), "LC_NUMERIC", #cat); \
else if (!ignore_content && now->val.str.startmb == NULL) \
{ \
lr_error (ldfile, _("\
%s: unknown character in field `%s'"), "LC_NUMERIC", #cat); \
numeric->cat = ""; \
numeric->cat##_wc = L'\0'; \
} \
else if (now->val.str.startwc != NULL && now->val.str.lenwc > 2) \
{ \
lr_error (ldfile, _("\
%s: value for field `%s' must be a single character"), "LC_NUMERIC", #cat); \
} \
else if (!ignore_content) \
{ \
numeric->cat = now->val.str.startmb; \
\
if (now->val.str.startwc != NULL) \
numeric->cat##_wc = *now->val.str.startwc; \
} \
ldfile->return_widestr = 0; \
break
STR_ELEM (decimal_point);
STR_ELEM (thousands_sep);
case tok_grouping:
/* Ignore the rest of the line if we don't need the input of
this line. */
if (ignore_content)
{
lr_ignore_rest (ldfile, 0);
break;
}
now = lr_token (ldfile, charmap, result, NULL, verbose);
if (now->tok != tok_minus1 && now->tok != tok_number)
goto err_label;
else
{
size_t act = 0;
size_t max = 10;
char *grouping = xmalloc (max);
do
{
if (act + 1 >= max)
{
max *= 2;
grouping = xrealloc (grouping, max);
}
if (act > 0 && grouping[act - 1] == '\177')
{
lr_error (ldfile, _("\
%s: `-1' must be last entry in `%s' field"), "LC_NUMERIC", "grouping");
lr_ignore_rest (ldfile, 0);
break;
}
if (now->tok == tok_minus1)
grouping[act++] = '\177';
else if (now->val.num == 0)
{
/* A value of 0 disables grouping from here on but
we must not store a NUL character since this
terminates the string. Use something different
which must not be used otherwise. */
grouping[act++] = '\377';
}
else if (now->val.num > 126)
lr_error (ldfile, _("\
%s: values for field `%s' must be smaller than 127"),
"LC_NUMERIC", "grouping");
else
grouping[act++] = now->val.num;
/* Next must be semicolon. */
now = lr_token (ldfile, charmap, result, NULL, verbose);
if (now->tok != tok_semicolon)
break;
now = lr_token (ldfile, charmap, result, NULL, verbose);
}
while (now->tok == tok_minus1 || now->tok == tok_number);
if (now->tok != tok_eol)
goto err_label;
grouping[act++] = '\0';
numeric->grouping = xrealloc (grouping, act);
numeric->grouping_len = act;
}
break;
case tok_end:
/* Next we assume `LC_NUMERIC'. */
now = lr_token (ldfile, charmap, result, NULL, verbose);
if (now->tok == tok_eof)
break;
if (now->tok == tok_eol)
lr_error (ldfile, _("%s: incomplete `END' line"), "LC_NUMERIC");
else if (now->tok != tok_lc_numeric)
lr_error (ldfile, _("\
%1$s: definition does not end with `END %1$s'"), "LC_NUMERIC");
lr_ignore_rest (ldfile, now->tok == tok_lc_numeric);
return;
default:
err_label:
SYNTAX_ERROR (_("%s: syntax error"), "LC_NUMERIC");
}
/* Prepare for the next round. */
now = lr_token (ldfile, charmap, result, NULL, verbose);
nowtok = now->tok;
}
/* When we come here we reached the end of the file. */
lr_error (ldfile, _("%s: premature end of file"), "LC_NUMERIC");
}