diff options
| author | Pedro F. Giffuni <pfg@FreeBSD.org> | 2013-07-27 19:57:20 +0000 |
|---|---|---|
| committer | Pedro F. Giffuni <pfg@FreeBSD.org> | 2013-07-27 19:57:20 +0000 |
| commit | fb6b9b91d11dacb448979bb7770182f1731e9f99 (patch) | |
| tree | 68fe5e9d8970b82717478c7e904a7456bbaad7f5 /error.c | |
| parent | fea6cc68e36068e834e86474181b1e8edbae89df (diff) | |
Virgin import of patch-2.5.9, the last official GPLv2 release.vendor/misc-GNU/patch/2.5.9vendor/misc-GNU/patch
As in previous imports we dropped the mkinstall and pc directories
as they are of no use to us.
Differently from previous imports, patch.1 was not renamed and
is maintained with its original name (patch.man). If we ever
merge this into the main tree, care must be taken to rename
it back.
Notes
Notes:
svn path=/vendor/patch/dist/; revision=253717
svn path=/vendor/patch/2.5.9/; revision=253718; tag=vendor/misc-GNU/patch/2.5.9
Diffstat (limited to 'error.c')
| -rw-r--r-- | error.c | 407 |
1 files changed, 407 insertions, 0 deletions
diff --git a/error.c b/error.c new file mode 100644 index 000000000000..18c779e987ed --- /dev/null +++ b/error.c @@ -0,0 +1,407 @@ +/* Error handler for noninteractive utilities + Copyright (C) 1990-1998, 2000, 2001, 2002 Free Software Foundation, Inc. + 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 2, 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, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <stdio.h> + +#ifdef _LIBC +# include <libintl.h> +#else +# include "gettext.h" +#endif + +#ifdef _LIBC +# include <wchar.h> +# define mbsrtowcs __mbsrtowcs +#endif + +#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC +# if __STDC__ +# include <stdarg.h> +# define VA_START(args, lastarg) va_start(args, lastarg) +# else +# include <varargs.h> +# define VA_START(args, lastarg) va_start(args) +# endif +#else +# define va_alist a1, a2, a3, a4, a5, a6, a7, a8 +# define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8; +#endif + +#if STDC_HEADERS || _LIBC +# include <stdlib.h> +# include <string.h> +#else +void exit (); +#endif + +#include "error.h" + +#if !_LIBC +# include "unlocked-io.h" +#endif + +#ifndef _ +# define _(String) String +#endif + +/* If NULL, error will flush stdout, then print on stderr the program + name, a colon and a space. Otherwise, error will call this + function without parameters instead. */ +void (*error_print_progname) ( +#if __STDC__ - 0 + void +#endif + ); + +/* This variable is incremented each time `error' is called. */ +unsigned int error_message_count; + +#ifdef _LIBC +/* In the GNU C library, there is a predefined variable for this. */ + +# define program_name program_invocation_name +# include <errno.h> +# include <libio/libioP.h> + +/* In GNU libc we want do not want to use the common name `error' directly. + Instead make it a weak alias. */ +extern void __error (int status, int errnum, const char *message, ...) + __attribute__ ((__format__ (__printf__, 3, 4))); +extern void __error_at_line (int status, int errnum, const char *file_name, + unsigned int line_number, const char *message, + ...) + __attribute__ ((__format__ (__printf__, 5, 6)));; +# define error __error +# define error_at_line __error_at_line + +# ifdef USE_IN_LIBIO +# include <libio/iolibio.h> +# define fflush(s) INTUSE(_IO_fflush) (s) +# undef putc +# define putc(c, fp) INTUSE(_IO_putc) (c, fp) +# endif + +#else /* not _LIBC */ + +# if !HAVE_DECL_STRERROR_R && STRERROR_R_CHAR_P +# ifndef HAVE_DECL_STRERROR_R +"this configure-time declaration test was not run" +# endif +char *strerror_r (); +# endif + +/* The calling program should define program_name and set it to the + name of the executing program. */ +extern char *program_name; + +# if HAVE_STRERROR_R || defined strerror_r +# define __strerror_r strerror_r +# else +# if HAVE_STRERROR +# ifndef HAVE_DECL_STRERROR +"this configure-time declaration test was not run" +# endif +# if !HAVE_DECL_STRERROR +char *strerror (); +# endif +# else +static char * +private_strerror (int errnum) +{ + extern char *sys_errlist[]; + extern int sys_nerr; + + if (errnum > 0 && errnum <= sys_nerr) + return _(sys_errlist[errnum]); + return _("Unknown system error"); +} +# define strerror private_strerror +# endif /* HAVE_STRERROR */ +# endif /* HAVE_STRERROR_R || defined strerror_r */ +#endif /* not _LIBC */ + +static void +print_errno_message (int errnum) +{ + char const *s; + +#if defined HAVE_STRERROR_R || _LIBC + char errbuf[1024]; +# if STRERROR_R_CHAR_P || _LIBC + s = __strerror_r (errnum, errbuf, sizeof errbuf); +# else + if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0) + s = errbuf; + else + s = 0; +# endif +#else + s = strerror (errnum); +#endif + +#if !_LIBC + if (! s) + s = _("Unknown system error"); +#endif + +#if _LIBC && USE_IN_LIBIO + if (_IO_fwide (stderr, 0) > 0) + { + __fwprintf (stderr, L": %s", s); + return; + } +#endif + + fprintf (stderr, ": %s", s); +} + +#ifdef VA_START +static void +error_tail (int status, int errnum, const char *message, va_list args) +{ +# if HAVE_VPRINTF || _LIBC +# if _LIBC && USE_IN_LIBIO + if (_IO_fwide (stderr, 0) > 0) + { +# define ALLOCA_LIMIT 2000 + size_t len = strlen (message) + 1; + wchar_t *wmessage = NULL; + mbstate_t st; + size_t res; + const char *tmp; + + do + { + if (len < ALLOCA_LIMIT) + wmessage = (wchar_t *) alloca (len * sizeof (wchar_t)); + else + { + if (wmessage != NULL && len / 2 < ALLOCA_LIMIT) + wmessage = NULL; + + wmessage = (wchar_t *) realloc (wmessage, + len * sizeof (wchar_t)); + + if (wmessage == NULL) + { + fputws_unlocked (L"out of memory\n", stderr); + return; + } + } + + memset (&st, '\0', sizeof (st)); + tmp =message; + } + while ((res = mbsrtowcs (wmessage, &tmp, len, &st)) == len); + + if (res == (size_t) -1) + /* The string cannot be converted. */ + wmessage = (wchar_t *) L"???"; + + __vfwprintf (stderr, wmessage, args); + } + else +# endif + vfprintf (stderr, message, args); +# else + _doprnt (message, args, stderr); +# endif + va_end (args); + + ++error_message_count; + if (errnum) + print_errno_message (errnum); +# if _LIBC && USE_IN_LIBIO + if (_IO_fwide (stderr, 0) > 0) + putwc (L'\n', stderr); + else +# endif + putc ('\n', stderr); + fflush (stderr); + if (status) + exit (status); +} +#endif + + +/* Print the program name and error message MESSAGE, which is a printf-style + format string with optional args. + If ERRNUM is nonzero, print its corresponding system error message. + Exit with status STATUS if it is nonzero. */ +/* VARARGS */ +void +#if defined VA_START && __STDC__ +error (int status, int errnum, const char *message, ...) +#else +error (status, errnum, message, va_alist) + int status; + int errnum; + char *message; + va_dcl +#endif +{ +#ifdef VA_START + va_list args; +#endif + + fflush (stdout); +#ifdef _LIBC +# ifdef USE_IN_LIBIO + _IO_flockfile (stderr); +# else + __flockfile (stderr); +# endif +#endif + if (error_print_progname) + (*error_print_progname) (); + else + { +#if _LIBC && USE_IN_LIBIO + if (_IO_fwide (stderr, 0) > 0) + __fwprintf (stderr, L"%s: ", program_name); + else +#endif + fprintf (stderr, "%s: ", program_name); + } + +#ifdef VA_START + VA_START (args, message); + error_tail (status, errnum, message, args); +#else + fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8); + + ++error_message_count; + if (errnum) + print_errno_message (errnum); + putc ('\n', stderr); + fflush (stderr); + if (status) + exit (status); +#endif + +#ifdef _LIBC +# ifdef USE_IN_LIBIO + _IO_funlockfile (stderr); +# else + __funlockfile (stderr); +# endif +#endif +} + +/* Sometimes we want to have at most one error per line. This + variable controls whether this mode is selected or not. */ +int error_one_per_line; + +void +#if defined VA_START && __STDC__ +error_at_line (int status, int errnum, const char *file_name, + unsigned int line_number, const char *message, ...) +#else +error_at_line (status, errnum, file_name, line_number, message, va_alist) + int status; + int errnum; + const char *file_name; + unsigned int line_number; + char *message; + va_dcl +#endif +{ +#ifdef VA_START + va_list args; +#endif + + if (error_one_per_line) + { + static const char *old_file_name; + static unsigned int old_line_number; + + if (old_line_number == line_number + && (file_name == old_file_name + || strcmp (old_file_name, file_name) == 0)) + /* Simply return and print nothing. */ + return; + + old_file_name = file_name; + old_line_number = line_number; + } + + fflush (stdout); +#ifdef _LIBC +# ifdef USE_IN_LIBIO + _IO_flockfile (stderr); +# else + __flockfile (stderr); +# endif +#endif + if (error_print_progname) + (*error_print_progname) (); + else + { +#if _LIBC && USE_IN_LIBIO + if (_IO_fwide (stderr, 0) > 0) + __fwprintf (stderr, L"%s: ", program_name); + else +#endif + fprintf (stderr, "%s:", program_name); + } + + if (file_name != NULL) + { +#if _LIBC && USE_IN_LIBIO + if (_IO_fwide (stderr, 0) > 0) + __fwprintf (stderr, L"%s:%d: ", file_name, line_number); + else +#endif + fprintf (stderr, "%s:%d: ", file_name, line_number); + } + +#ifdef VA_START + VA_START (args, message); + error_tail (status, errnum, message, args); +#else + fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8); + + ++error_message_count; + if (errnum) + print_errno_message (errnum); + putc ('\n', stderr); + fflush (stderr); + if (status) + exit (status); +#endif + +#ifdef _LIBC +# ifdef USE_IN_LIBIO + _IO_funlockfile (stderr); +# else + __funlockfile (stderr); +# endif +#endif +} + +#ifdef _LIBC +/* Make the weak alias. */ +# undef error +# undef error_at_line +weak_alias (__error, error) +weak_alias (__error_at_line, error_at_line) +#endif |
