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/* YCP and Smalltalk format strings.
Copyright (C) 2001-2004, 2006-2007, 2009, 2015-2016 Free Software
Foundation, Inc.
Written by Bruno Haible <haible@clisp.cons.org>, 2001.
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 3 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 <stdbool.h>
#include <stdlib.h>
#include "format.h"
#include "c-ctype.h"
#include "xalloc.h"
#include "xvasprintf.h"
#include "format-invalid.h"
#include "gettext.h"
#define _(str) gettext (str)
/* YCP sformat strings are described in libycp documentation YCP-builtins.html.
A directive starts with '%' and is followed by '%' or a nonzero digit ('1'
to '9').
GNU Smalltalk format strings are described in the CharArray documentation,
methods 'bindWith:' and 'bindWithArguments:'. They have the same syntax.
*/
struct spec
{
unsigned int directives;
unsigned int arg_count;
bool args_used[9];
};
static void *
format_parse (const char *format, bool translated, char *fdi,
char **invalid_reason)
{
const char *const format_start = format;
struct spec spec;
struct spec *result;
spec.directives = 0;
spec.arg_count = 0;
for (; *format != '\0';)
if (*format++ == '%')
{
/* A directive. */
FDI_SET (format - 1, FMTDIR_START);
spec.directives++;
if (*format == '%')
format++;
else if (*format >= '1' && *format <= '9')
{
unsigned int number = *format - '1';
while (spec.arg_count <= number)
spec.args_used[spec.arg_count++] = false;
spec.args_used[number] = true;
format++;
}
else
{
if (*format == '\0')
{
*invalid_reason = INVALID_UNTERMINATED_DIRECTIVE ();
FDI_SET (format - 1, FMTDIR_ERROR);
}
else
{
*invalid_reason =
(c_isprint (*format)
? xasprintf (_("In the directive number %u, the character '%c' is not a digit between 1 and 9."), spec.directives, *format)
: xasprintf (_("The character that terminates the directive number %u is not a digit between 1 and 9."), spec.directives));
FDI_SET (format, FMTDIR_ERROR);
}
goto bad_format;
}
FDI_SET (format - 1, FMTDIR_END);
}
result = XMALLOC (struct spec);
*result = spec;
return result;
bad_format:
return NULL;
}
static void
format_free (void *descr)
{
struct spec *spec = (struct spec *) descr;
free (spec);
}
static int
format_get_number_of_directives (void *descr)
{
struct spec *spec = (struct spec *) descr;
return spec->directives;
}
static bool
format_check (void *msgid_descr, void *msgstr_descr, bool equality,
formatstring_error_logger_t error_logger,
const char *pretty_msgid, const char *pretty_msgstr)
{
struct spec *spec1 = (struct spec *) msgid_descr;
struct spec *spec2 = (struct spec *) msgstr_descr;
bool err = false;
unsigned int i;
for (i = 0; i < spec1->arg_count || i < spec2->arg_count; i++)
{
bool arg_used1 = (i < spec1->arg_count && spec1->args_used[i]);
bool arg_used2 = (i < spec2->arg_count && spec2->args_used[i]);
if (equality ? (arg_used1 != arg_used2) : (!arg_used1 && arg_used2))
{
if (error_logger)
{
if (arg_used1)
error_logger (_("a format specification for argument %u doesn't exist in '%s'"),
i + 1, pretty_msgstr);
else
error_logger (_("a format specification for argument %u, as in '%s', doesn't exist in '%s'"),
i + 1, pretty_msgstr, pretty_msgid);
}
err = true;
break;
}
}
return err;
}
struct formatstring_parser formatstring_ycp =
{
format_parse,
format_free,
format_get_number_of_directives,
NULL,
format_check
};
struct formatstring_parser formatstring_smalltalk =
{
format_parse,
format_free,
format_get_number_of_directives,
NULL,
format_check
};
#ifdef TEST
/* Test program: Print the argument list specification returned by
format_parse for strings read from standard input. */
#include <stdio.h>
static void
format_print (void *descr)
{
struct spec *spec = (struct spec *) descr;
unsigned int i;
if (spec == NULL)
{
printf ("INVALID");
return;
}
printf ("(");
for (i = 0; i < spec->arg_count; i++)
{
if (i > 0)
printf (" ");
if (spec->args_used[i])
printf ("*");
else
printf ("_");
}
printf (")");
}
int
main ()
{
for (;;)
{
char *line = NULL;
size_t line_size = 0;
int line_len;
char *invalid_reason;
void *descr;
line_len = getline (&line, &line_size, stdin);
if (line_len < 0)
break;
if (line_len > 0 && line[line_len - 1] == '\n')
line[--line_len] = '\0';
invalid_reason = NULL;
descr = format_parse (line, false, NULL, &invalid_reason);
format_print (descr);
printf ("\n");
if (descr == NULL)
printf ("%s\n", invalid_reason);
free (invalid_reason);
free (line);
}
return 0;
}
/*
* For Emacs M-x compile
* Local Variables:
* compile-command: "/bin/sh ../libtool --tag=CC --mode=link gcc -o a.out -static -O -g -Wall -I.. -I../gnulib-lib -I../intl -DHAVE_CONFIG_H -DTEST format-ycp.c ../gnulib-lib/libgettextlib.la"
* End:
*/
#endif /* TEST */
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