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/* Multiline error-reporting functions.
Copyright (C) 2001-2024 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 <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include "xerror.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <error.h>
#include "error-progname.h"
#include "mbswidth.h"
#if IN_LIBGETTEXTPO
# define program_name getprogname ()
#else
# include "progname.h"
#endif
/* Emit a multiline warning to stderr, consisting of MESSAGE, with the
first line prefixed with PREFIX or, if that is NULL, with PREFIX_WIDTH
spaces, and the remaining lines prefixed with the same amount of spaces.
Free the PREFIX and MESSAGE when done. Return the amount of spaces. */
static size_t
multiline_internal (char *prefix, size_t prefix_width, char *message)
{
size_t width;
const char *cp;
fflush (stdout);
cp = message;
if (prefix != NULL)
{
width = 0;
if (error_with_progname)
{
fprintf (stderr, "%s: ", program_name);
width += mbswidth (program_name, 0) + 2;
}
fputs (prefix, stderr);
width += mbswidth (prefix, 0);
free (prefix);
goto after_indent;
}
else
width = prefix_width;
for (;;)
{
const char *np;
{
size_t i;
for (i = width; i > 0; i--)
putc (' ', stderr);
}
after_indent:
np = strchr (cp, '\n');
if (np == NULL || np[1] == '\0')
{
fputs (cp, stderr);
break;
}
np++;
fwrite (cp, 1, np - cp, stderr);
cp = np;
}
free (message);
return width;
}
size_t
multiline_warning (char *prefix, char *message)
{
if (prefix == NULL)
/* Invalid argument. */
abort ();
return multiline_internal (prefix, 0, message);
}
size_t
multiline_error (char *prefix, char *message)
{
if (prefix == NULL)
/* Invalid argument. */
abort ();
++error_message_count;
return multiline_internal (prefix, 0, message);
}
void
multiline_append (size_t prefix_width, char *message)
{
multiline_internal (NULL, prefix_width, message);
}
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