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-rw-r--r--locale/programs/record-status.c229
1 files changed, 229 insertions, 0 deletions
diff --git a/locale/programs/record-status.c b/locale/programs/record-status.c
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+++ b/locale/programs/record-status.c
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+/* Functions for recorded errors, warnings, and verbose messages.
+ Copyright (C) 1998-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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/>. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <string.h>
+#include <error.h>
+#include <errno.h>
+#include <locale.h>
+
+#include "record-status.h"
+
+/* Warnings recorded by record_warnings. */
+int recorded_warning_count;
+
+/* Errors recorded by record_errors. */
+int recorded_error_count;
+
+/* If not zero suppress warnings and information messages. */
+int be_quiet;
+
+/* If not zero give a lot more messages. */
+int verbose;
+
+/* Warnings which can be disabled: */
+/* By default we check the character map for ASCII compatibility. */
+bool warn_ascii = true;
+/* By default we check that the international currency symbol matches a
+ known country code. */
+bool warn_int_curr_symbol = true;
+
+/* Alter the current locale to match the locale configured by the
+ user, and return the previous saved state. */
+struct locale_state
+push_locale (void)
+{
+ int saved_errno;
+ const char *orig;
+ char *copy = NULL;
+
+ saved_errno = errno;
+
+ orig = setlocale (LC_CTYPE, NULL);
+ if (orig == NULL)
+ error (0, 0, "failed to read locale!");
+
+ if (setlocale (LC_CTYPE, "") == NULL)
+ error (0, 0, "failed to set locale!");
+
+ errno = saved_errno;
+
+ if (orig != NULL)
+ copy = strdup (orig);
+
+ /* We will return either a valid locale or NULL if we failed
+ to save the locale. */
+ return (struct locale_state) { .cur_locale = copy };
+}
+
+/* Use the saved state to restore the locale. */
+void
+pop_locale (struct locale_state ls)
+{
+ const char *set = NULL;
+ /* We might have failed to save the locale, so only attempt to
+ restore a validly saved non-NULL locale. */
+ if (ls.cur_locale != NULL)
+ {
+ set = setlocale (LC_CTYPE, ls.cur_locale);
+ if (set == NULL)
+ error (0, 0, "failed to restore %s locale!", ls.cur_locale);
+
+ free (ls.cur_locale);
+ }
+}
+
+/* Wrapper to print verbose informative messages.
+ Verbose messages are only printed if --verbose
+ is in effect and --quiet is not. */
+void
+__attribute__ ((__format__ (__printf__, 2, 3), nonnull (1, 2), unused))
+record_verbose (FILE *stream, const char *format, ...)
+{
+ char *str;
+ va_list arg;
+
+ if (!verbose)
+ return;
+
+ if (!be_quiet)
+ {
+ struct locale_state ls;
+ int ret;
+
+ va_start (arg, format);
+ ls = push_locale ();
+
+ ret = vasprintf (&str, format, arg);
+ if (ret == -1)
+ abort ();
+
+ pop_locale (ls);
+ va_end (arg);
+
+ fprintf (stream, "[verbose] %s\n", str);
+
+ free (str);
+ }
+}
+
+/* Wrapper to print warning messages. We keep track of how
+ many were called because this effects our exit code.
+ Nothing is printed if --quiet is in effect, but warnings
+ are always counted. */
+void
+__attribute__ ((__format__ (__printf__, 1, 2), nonnull (1), unused))
+record_warning (const char *format, ...)
+{
+ char *str;
+ va_list arg;
+
+ recorded_warning_count++;
+
+ if (!be_quiet)
+ {
+ struct locale_state ls;
+ int ret;
+
+ va_start (arg, format);
+ ls = push_locale ();
+
+ ret = vasprintf (&str, format, arg);
+ if (ret == -1)
+ abort ();
+
+ pop_locale (ls);
+ va_end (arg);
+
+ fprintf (stderr, "[warning] %s\n", str);
+
+ free (str);
+ }
+}
+
+/* Wrapper to print error messages. We keep track of how
+ many were called because this effects our exit code.
+ Nothing is printed if --quiet is in effect, but errors
+ are always counted, and fatal errors always exit the
+ program. */
+void
+__attribute__ ((__format__ (__printf__, 3, 4), nonnull (3), unused))
+record_error (int status, int errnum, const char *format, ...)
+{
+ char *str;
+ va_list arg;
+
+ recorded_error_count++;
+
+ /* The existing behaviour is that even if you use --quiet, a fatal
+ error is always printed and terminates the process. */
+ if (!be_quiet || status != 0)
+ {
+ struct locale_state ls;
+ int ret;
+
+ va_start (arg, format);
+ ls = push_locale ();
+
+ ret = vasprintf (&str, format, arg);
+ if (ret == -1)
+ abort ();
+
+ pop_locale (ls);
+ va_end (arg);
+
+ error (status, errnum, "[error] %s", str);
+
+ free (str);
+ }
+}
+/* ... likewise for error_at_line. */
+void
+__attribute__ ((__format__ (__printf__, 5, 6), nonnull (3, 5), unused))
+record_error_at_line (int status, int errnum, const char *filename,
+ unsigned int linenum, const char *format, ...)
+{
+ char *str;
+ va_list arg;
+
+ recorded_error_count++;
+
+ /* The existing behaviour is that even if you use --quiet, a fatal
+ error is always printed and terminates the process. */
+ if (!be_quiet || status != 0)
+ {
+ struct locale_state ls;
+ int ret;
+
+ va_start (arg, format);
+ ls = push_locale ();
+
+ ret = vasprintf (&str, format, arg);
+ if (ret == -1)
+ abort ();
+
+ pop_locale (ls);
+ va_end (arg);
+
+ error_at_line (status, errnum, filename, linenum, "[error] %s", str);
+
+ free (str);
+ }
+}