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author | Sergey Poznyakoff <gray@gnu.org.ua> | 2005-02-23 14:13:03 +0000 |
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committer | Sergey Poznyakoff <gray@gnu.org.ua> | 2005-02-23 14:13:03 +0000 |
commit | 814d040e0eb3a82d3bad476c8cd846a01f610f0a (patch) | |
tree | f1eaffc9fff9e6cad28d46115e15ad42430a847d | |
parent | 48442c8f89b9de078fe91ac9d0a7495bcb7882f1 (diff) | |
download | mailutils-814d040e0eb3a82d3bad476c8cd846a01f610f0a.tar.gz mailutils-814d040e0eb3a82d3bad476c8cd846a01f610f0a.tar.bz2 |
Added to the repository by gnulib-sync
-rw-r--r-- | lib/allocsa.c | 139 | ||||
-rw-r--r-- | lib/allocsa.h | 113 | ||||
-rw-r--r-- | lib/allocsa.valgrind | 7 | ||||
-rw-r--r-- | lib/error.c | 304 | ||||
-rw-r--r-- | lib/exit.h | 32 | ||||
-rw-r--r-- | lib/exitfail.c | 27 | ||||
-rw-r--r-- | lib/exitfail.h | 20 | ||||
-rw-r--r-- | lib/fnmatch_.h | 63 | ||||
-rw-r--r-- | lib/fnmatch_loop.c | 1192 | ||||
-rw-r--r-- | lib/getpass.h | 31 | ||||
-rw-r--r-- | lib/setenv.h | 54 | ||||
-rw-r--r-- | lib/stdbool_.h | 93 | ||||
-rw-r--r-- | lib/unsetenv.c | 99 | ||||
-rw-r--r-- | lib/vasprintf.h | 63 | ||||
-rw-r--r-- | lib/xsize.h | 108 |
15 files changed, 2345 insertions, 0 deletions
diff --git a/lib/allocsa.c b/lib/allocsa.c new file mode 100644 index 000000000..61e7a4e34 --- /dev/null +++ b/lib/allocsa.c @@ -0,0 +1,139 @@ +/* Safe automatic memory allocation. + Copyright (C) 2003 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2003. + + 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. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +/* Specification. */ +#include "allocsa.h" + +/* The speed critical point in this file is freesa() applied to an alloca() + result: it must be fast, to match the speed of alloca(). The speed of + mallocsa() and freesa() in the other case are not critical, because they + are only invoked for big memory sizes. */ + +#if HAVE_ALLOCA + +/* Store the mallocsa() results in a hash table. This is needed to reliably + distinguish a mallocsa() result and an alloca() result. + + Although it is possible that the same pointer is returned by alloca() and + by mallocsa() at different times in the same application, it does not lead + to a bug in freesa(), because: + - Before a pointer returned by alloca() can point into malloc()ed memory, + the function must return, and once this has happened the programmer must + not call freesa() on it anyway. + - Before a pointer returned by mallocsa() can point into the stack, it + must be freed. The only function that can free it is freesa(), and + when freesa() frees it, it also removes it from the hash table. */ + +#define MAGIC_NUMBER 0x1415fb4a +#define MAGIC_SIZE sizeof (int) +/* This is how the header info would look like without any alignment + considerations. */ +struct preliminary_header { void *next; char room[MAGIC_SIZE]; }; +/* But the header's size must be a multiple of sa_alignment_max. */ +#define HEADER_SIZE \ + (((sizeof (struct preliminary_header) + sa_alignment_max - 1) / sa_alignment_max) * sa_alignment_max) +struct header { void *next; char room[HEADER_SIZE - sizeof (struct preliminary_header) + MAGIC_SIZE]; }; +/* Verify that HEADER_SIZE == sizeof (struct header). */ +typedef int verify1[2 * (HEADER_SIZE == sizeof (struct header)) - 1]; +/* We make the hash table quite big, so that during lookups the probability + of empty hash buckets is quite high. There is no need to make the hash + table resizable, because when the hash table gets filled so much that the + lookup becomes slow, it means that the application has memory leaks. */ +#define HASH_TABLE_SIZE 257 +static void * mallocsa_results[HASH_TABLE_SIZE]; + +#endif + +void * +mallocsa (size_t n) +{ +#if HAVE_ALLOCA + /* Allocate one more word, that serves as an indicator for malloc()ed + memory, so that freesa() of an alloca() result is fast. */ + size_t nplus = n + HEADER_SIZE; + + if (nplus >= n) + { + char *p = (char *) malloc (nplus); + + if (p != NULL) + { + size_t slot; + + p += HEADER_SIZE; + + /* Put a magic number into the indicator word. */ + ((int *) p)[-1] = MAGIC_NUMBER; + + /* Enter p into the hash table. */ + slot = (unsigned long) p % HASH_TABLE_SIZE; + ((struct header *) (p - HEADER_SIZE))->next = mallocsa_results[slot]; + mallocsa_results[slot] = p; + + return p; + } + } + /* Out of memory. */ + return NULL; +#else +# if !MALLOC_0_IS_NONNULL + if (n == 0) + n = 1; +# endif + return malloc (n); +#endif +} + +#if HAVE_ALLOCA +void +freesa (void *p) +{ + /* mallocsa() may have returned NULL. */ + if (p != NULL) + { + /* Attempt to quickly distinguish the mallocsa() result - which has + a magic indicator word - and the alloca() result - which has an + uninitialized indicator word. It is for this test that sa_increment + additional bytes are allocated in the alloca() case. */ + if (((int *) p)[-1] == MAGIC_NUMBER) + { + /* Looks like a mallocsa() result. To see whether it really is one, + perform a lookup in the hash table. */ + size_t slot = (unsigned long) p % HASH_TABLE_SIZE; + void **chain = &mallocsa_results[slot]; + for (; *chain != NULL;) + { + if (*chain == p) + { + /* Found it. Remove it from the hash table and free it. */ + char *p_begin = (char *) p - HEADER_SIZE; + *chain = ((struct header *) p_begin)->next; + free (p_begin); + return; + } + chain = &((struct header *) ((char *) *chain - HEADER_SIZE))->next; + } + } + /* At this point, we know it was not a mallocsa() result. */ + } +} +#endif diff --git a/lib/allocsa.h b/lib/allocsa.h new file mode 100644 index 000000000..5ae49e507 --- /dev/null +++ b/lib/allocsa.h @@ -0,0 +1,113 @@ +/* Safe automatic memory allocation. + Copyright (C) 2003-2004 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2003. + + 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. */ + +#ifndef _ALLOCSA_H +#define _ALLOCSA_H + +#include <alloca.h> +#include <stddef.h> +#include <stdlib.h> + +/* safe_alloca(N) is equivalent to alloca(N) when it is safe to call + alloca(N); otherwise it returns NULL. It either returns N bytes of + memory allocated on the stack, that lasts until the function returns, + or NULL. + Use of safe_alloca should be avoided: + - inside arguments of function calls - undefined behaviour, + - in inline functions - the allocation may actually last until the + calling function returns. +*/ +#if HAVE_ALLOCA +/* The OS usually guarantees only one guard page at the bottom of the stack, + and a page size can be as small as 4096 bytes. So we cannot safely + allocate anything larger than 4096 bytes. Also care for the possibility + of a few compiler-allocated temporary stack slots. + This must be a macro, not an inline function. */ +# define safe_alloca(N) ((N) < 4032 ? alloca (N) : NULL) +#else +# define safe_alloca(N) ((N), NULL) +#endif + +/* allocsa(N) is a safe variant of alloca(N). It allocates N bytes of + memory allocated on the stack, that must be freed using freesa() before + the function returns. Upon failure, it returns NULL. */ +#if HAVE_ALLOCA +# define allocsa(N) \ + ((N) < 4032 - sa_increment \ + ? (void *) ((char *) alloca ((N) + sa_increment) + sa_increment) \ + : mallocsa (N)) +#else +# define allocsa(N) \ + mallocsa (N) +#endif +extern void * mallocsa (size_t n); + +/* Free a block of memory allocated through allocsa(). */ +#if HAVE_ALLOCA +extern void freesa (void *p); +#else +# define freesa free +#endif + +/* Maybe we should also define a variant + nallocsa (size_t n, size_t s) - behaves like allocsa (n * s) + If this would be useful in your application. please speak up. */ + + +/* ------------------- Auxiliary, non-public definitions ------------------- */ + +/* Determine the alignment of a type at compile time. */ +#if defined __GNUC__ +# define sa_alignof __alignof__ +#elif defined __cplusplus + template <class type> struct sa_alignof_helper { char __slot1; type __slot2; }; +# define sa_alignof(type) offsetof (sa_alignof_helper<type>, __slot2) +#elif defined __hpux + /* Work around a HP-UX 10.20 cc bug with enums constants defined as offsetof + values. */ +# define sa_alignof(type) (sizeof (type) <= 4 ? 4 : 8) +#else +# define sa_alignof(type) offsetof (struct { char __slot1; type __slot2; }, __slot2) +#endif + +enum +{ +/* The desired alignment of memory allocations is the maximum alignment + among all elementary types. */ + sa_alignment_long = sa_alignof (long), + sa_alignment_double = sa_alignof (double), +#ifdef HAVE_LONG_LONG + sa_alignment_longlong = sa_alignof (long long), +#endif +#ifdef HAVE_LONG_DOUBLE + sa_alignment_longdouble = sa_alignof (long double), +#endif + sa_alignment_max = ((sa_alignment_long - 1) | (sa_alignment_double - 1) +#ifdef HAVE_LONG_LONG + | (sa_alignment_longlong - 1) +#endif +#ifdef HAVE_LONG_DOUBLE + | (sa_alignment_longdouble - 1) +#endif + ) + 1, +/* The increment that guarantees room for a magic word must be >= sizeof (int) + and a multiple of sa_alignment_max. */ + sa_increment = ((sizeof (int) + sa_alignment_max - 1) / sa_alignment_max) * sa_alignment_max +}; + +#endif /* _ALLOCSA_H */ diff --git a/lib/allocsa.valgrind b/lib/allocsa.valgrind new file mode 100644 index 000000000..f4c77d686 --- /dev/null +++ b/lib/allocsa.valgrind @@ -0,0 +1,7 @@ +# Suppress a valgrind message about use of uninitialized memory in freesa(). +# This use is OK because it provides only a speedup. +{ + freesa + Memcheck:Cond + fun:freesa +} diff --git a/lib/error.c b/lib/error.c new file mode 100644 index 000000000..6b3662d61 --- /dev/null +++ b/lib/error.c @@ -0,0 +1,304 @@ +/* Error handler for noninteractive utilities + Copyright (C) 1990-1998, 2000-2003, 2004 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; 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 "error.h" + +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#if !_LIBC && ENABLE_NLS +# include "gettext.h" +#endif + +#ifdef _LIBC +# include <wchar.h> +# define mbsrtowcs __mbsrtowcs +#endif + +#if USE_UNLOCKED_IO +# 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) (void); + +/* 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 + +# include <libio/iolibio.h> +# define fflush(s) INTUSE(_IO_fflush) (s) +# undef putc +# define putc(c, fp) INTUSE(_IO_putc) (c, fp) + +# include <bits/libc-lock.h> + +#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 + +# ifndef SIZE_MAX +# define SIZE_MAX ((size_t) -1) +# 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 +# endif +#endif /* not _LIBC */ + +static void +print_errno_message (int errnum) +{ + char const *s = NULL; + +#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; +# endif +#endif + +#if !_LIBC + if (! s && ! (s = strerror (errnum))) + s = _("Unknown system error"); +#endif + +#if _LIBC + if (_IO_fwide (stderr, 0) > 0) + { + __fwprintf (stderr, L": %s", s); + return; + } +#endif + + fprintf (stderr, ": %s", s); +} + +static void +error_tail (int status, int errnum, const char *message, va_list args) +{ +#if _LIBC + if (_IO_fwide (stderr, 0) > 0) + { +# define ALLOCA_LIMIT 2000 + size_t len = strlen (message) + 1; + const wchar_t *wmessage = L"out of memory"; + wchar_t *wbuf = (len < ALLOCA_LIMIT + ? alloca (len * sizeof *wbuf) + : len <= SIZE_MAX / sizeof *wbuf + ? malloc (len * sizeof *wbuf) + : NULL); + + if (wbuf) + { + size_t res; + mbstate_t st; + const char *tmp = message; + memset (&st, '\0', sizeof (st)); + res = mbsrtowcs (wbuf, &tmp, len, &st); + wmessage = res == (size_t) -1 ? L"???" : wbuf; + } + + __vfwprintf (stderr, wmessage, args); + if (! (len < ALLOCA_LIMIT)) + free (wbuf); + } + else +#endif + vfprintf (stderr, message, args); + va_end (args); + + ++error_message_count; + if (errnum) + print_errno_message (errnum); +#if _LIBC + if (_IO_fwide (stderr, 0) > 0) + putwc (L'\n', stderr); + else +#endif + putc ('\n', stderr); + fflush (stderr); + if (status) + exit (status); +} + + +/* 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. */ +void +error (int status, int errnum, const char *message, ...) +{ + va_list args; + +#if defined _LIBC && defined __libc_ptf_call + /* We do not want this call to be cut short by a thread + cancellation. Therefore disable cancellation for now. */ + int state = PTHREAD_CANCEL_ENABLE; + __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state), + 0); +#endif + + fflush (stdout); +#ifdef _LIBC + _IO_flockfile (stderr); +#endif + if (error_print_progname) + (*error_print_progname) (); + else + { +#if _LIBC + if (_IO_fwide (stderr, 0) > 0) + __fwprintf (stderr, L"%s: ", program_name); + else +#endif + fprintf (stderr, "%s: ", program_name); + } + + va_start (args, message); + error_tail (status, errnum, message, args); + +#ifdef _LIBC + _IO_funlockfile (stderr); +# ifdef __libc_ptf_call + __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0); +# 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 +error_at_line (int status, int errnum, const char *file_name, + unsigned int line_number, const char *message, ...) +{ + va_list args; + + 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; + } + +#if defined _LIBC && defined __libc_ptf_call + /* We do not want this call to be cut short by a thread + cancellation. Therefore disable cancellation for now. */ + int state = PTHREAD_CANCEL_ENABLE; + __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state), + 0); +#endif + + fflush (stdout); +#ifdef _LIBC + _IO_flockfile (stderr); +#endif + if (error_print_progname) + (*error_print_progname) (); + else + { +#if _LIBC + 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 + 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); + } + + va_start (args, message); + error_tail (status, errnum, message, args); + +#ifdef _LIBC + _IO_funlockfile (stderr); +# ifdef __libc_ptf_call + __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0); +# 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 diff --git a/lib/exit.h b/lib/exit.h new file mode 100644 index 000000000..4e8d46516 --- /dev/null +++ b/lib/exit.h @@ -0,0 +1,32 @@ +/* exit() function. + Copyright (C) 1995, 2001 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. */ + +#ifndef _EXIT_H +#define _EXIT_H + +/* Get exit() declaration. */ +#include <stdlib.h> + +/* Some systems do not define EXIT_*, even with STDC_HEADERS. */ +#ifndef EXIT_SUCCESS +# define EXIT_SUCCESS 0 +#endif +#ifndef EXIT_FAILURE +# define EXIT_FAILURE 1 +#endif + +#endif /* _EXIT_H */ diff --git a/lib/exitfail.c b/lib/exitfail.c new file mode 100644 index 000000000..2ae5f6955 --- /dev/null +++ b/lib/exitfail.c @@ -0,0 +1,27 @@ +/* Failure exit status + + Copyright (C) 2002, 2003 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; see the file COPYING. + If not, write to the Free Software Foundation, + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#if HAVE_CONFIG_H +# include <config.h> +#endif + +#include "exitfail.h" +#include "exit.h" + +int volatile exit_failure = EXIT_FAILURE; diff --git a/lib/exitfail.h b/lib/exitfail.h new file mode 100644 index 000000000..cf5ab7195 --- /dev/null +++ b/lib/exitfail.h @@ -0,0 +1,20 @@ +/* Failure exit status + + Copyright (C) 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; see the file COPYING. + If not, write to the Free Software Foundation, + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +extern int volatile exit_failure; diff --git a/lib/fnmatch_.h b/lib/fnmatch_.h new file mode 100644 index 000000000..87e661f72 --- /dev/null +++ b/lib/fnmatch_.h @@ -0,0 +1,63 @@ +/* Copyright (C) 1991, 1992, 1993, 1996, 1997, 1998, 1999, 2001, 2002, 2003 + 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. */ + +#ifndef _FNMATCH_H +# define _FNMATCH_H 1 + +# ifdef __cplusplus +extern "C" { +# endif + +/* We #undef these before defining them because some losing systems + (HP-UX A.08.07 for example) define these in <unistd.h>. */ +# undef FNM_PATHNAME +# undef FNM_NOESCAPE +# undef FNM_PERIOD + +/* Bits set in the FLAGS argument to `fnmatch'. */ +# define FNM_PATHNAME (1 << 0) /* No wildcard can ever match `/'. */ +# define FNM_NOESCAPE (1 << 1) /* Backslashes don't quote special chars. */ +# define FNM_PERIOD (1 << 2) /* Leading `.' is matched only explicitly. */ + +# if !defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _GNU_SOURCE +# define FNM_FILE_NAME FNM_PATHNAME /* Preferred GNU name. */ +# define FNM_LEADING_DIR (1 << 3) /* Ignore `/...' after a match. */ +# define FNM_CASEFOLD (1 << 4) /* Compare without regard to case. */ +# define FNM_EXTMATCH (1 << 5) /* Use ksh-like extended matching. */ +# endif + +/* Value returned by `fnmatch' if STRING does not match PATTERN. */ +# define FNM_NOMATCH 1 + +/* This value is returned if the implementation does not support + `fnmatch'. Since this is not the case here it will never be + returned but the conformance test suites still require the symbol + to be defined. */ +# ifdef _XOPEN_SOURCE +# define FNM_NOSYS (-1) +# endif + +/* Match NAME against the filename pattern PATTERN, + returning zero if it matches, FNM_NOMATCH if not. */ +extern int fnmatch (const char *__pattern, const char *__name, + int __flags); + +# ifdef __cplusplus +} +# endif + +#endif /* fnmatch.h */ diff --git a/lib/fnmatch_loop.c b/lib/fnmatch_loop.c new file mode 100644 index 000000000..7cea5a76e --- /dev/null +++ b/lib/fnmatch_loop.c @@ -0,0 +1,1192 @@ +/* Copyright (C) 1991,1992,1993,1996,1997,1998,1999,2000,2001,2002,2003,2004 + 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. */ + +/* Match STRING against the filename pattern PATTERN, returning zero if + it matches, nonzero if not. */ +static int EXT (INT opt, const CHAR *pattern, const CHAR *string, + const CHAR *string_end, bool no_leading_period, int flags) + internal_function; +static const CHAR *END (const CHAR *patternp) internal_function; + +static int +internal_function +FCT (const CHAR *pattern, const CHAR *string, const CHAR *string_end, + bool no_leading_period, int flags) +{ + register const CHAR *p = pattern, *n = string; + register UCHAR c; +#ifdef _LIBC +# if WIDE_CHAR_VERSION + const char *collseq = (const char *) + _NL_CURRENT(LC_COLLATE, _NL_COLLATE_COLLSEQWC); +# else + const UCHAR *collseq = (const UCHAR *) + _NL_CURRENT(LC_COLLATE, _NL_COLLATE_COLLSEQMB); +# endif +#endif + + while ((c = *p++) != L('\0')) + { + bool new_no_leading_period = false; + c = FOLD (c); + + switch (c) + { + case L('?'): + if (__builtin_expect (flags & FNM_EXTMATCH, 0) && *p == '(') + { + int res; + + res = EXT (c, p, n, string_end, no_leading_period, + flags); + if (res != -1) + return res; + } + + if (n == string_end) + return FNM_NOMATCH; + else if (*n == L('/') && (flags & FNM_FILE_NAME)) + return FNM_NOMATCH; + else if (*n == L('.') && no_leading_period) + return FNM_NOMATCH; + break; + + case L('\\'): + if (!(flags & FNM_NOESCAPE)) + { + c = *p++; + if (c == L('\0')) + /* Trailing \ loses. */ + return FNM_NOMATCH; + c = FOLD (c); + } + if (n == string_end || FOLD ((UCHAR) *n) != c) + return FNM_NOMATCH; + break; + + case L('*'): + if (__builtin_expect (flags & FNM_EXTMATCH, 0) && *p == '(') + { + int res; + + res = EXT (c, p, n, string_end, no_leading_period, + flags); + if (res != -1) + return res; + } + + if (n != string_end && *n == L('.') && no_leading_period) + return FNM_NOMATCH; + + for (c = *p++; c == L('?') || c == L('*'); c = *p++) + { + if (*p == L('(') && (flags & FNM_EXTMATCH) != 0) + { + const CHAR *endp = END (p); + if (endp != p) + { + /* This is a pattern. Skip over it. */ + p = endp; + continue; + } + } + + if (c == L('?')) + { + /* A ? needs to match one character. */ + if (n == string_end) + /* There isn't another character; no match. */ + return FNM_NOMATCH; + else if (*n == L('/') + && __builtin_expect (flags & FNM_FILE_NAME, 0)) + /* A slash does not match a wildcard under + FNM_FILE_NAME. */ + return FNM_NOMATCH; + else + /* One character of the string is consumed in matching + this ? wildcard, so *??? won't match if there are + less than three characters. */ + ++n; + } + } + + if (c == L('\0')) + /* The wildcard(s) is/are the last element of the pattern. + If the name is a file name and contains another slash + this means it cannot match, unless the FNM_LEADING_DIR + flag is set. */ + { + int result = (flags & FNM_FILE_NAME) == 0 ? 0 : FNM_NOMATCH; + + if (flags & FNM_FILE_NAME) + { + if (flags & FNM_LEADING_DIR) + result = 0; + else + { + if (MEMCHR (n, L('/'), string_end - n) == NULL) + result = 0; + } + } + + return result; + } + else + { + const CHAR *endp; + + endp = MEMCHR (n, (flags & FNM_FILE_NAME) ? L('/') : L('\0'), + string_end - n); + if (endp == NULL) + endp = string_end; + + if (c == L('[') + || (__builtin_expect (flags & FNM_EXTMATCH, 0) != 0 + && (c == L('@') || c == L('+') || c == L('!')) + && *p == L('('))) + { + int flags2 = ((flags & FNM_FILE_NAME) + ? flags : (flags & ~FNM_PERIOD)); + bool no_leading_period2 = no_leading_period; + + for (--p; n < endp; ++n, no_leading_period2 = false) + if (FCT (p, n, string_end, no_leading_period2, flags2) + == 0) + return 0; + } + else if (c == L('/') && (flags & FNM_FILE_NAME)) + { + while (n < string_end && *n != L('/')) + ++n; + if (n < string_end && *n == L('/') + && (FCT (p, n + 1, string_end, flags & FNM_PERIOD, flags) + == 0)) + return 0; + } + else + { + int flags2 = ((flags & FNM_FILE_NAME) + ? flags : (flags & ~FNM_PERIOD)); + int no_leading_period2 = no_leading_period; + + if (c == L('\\') && !(flags & FNM_NOESCAPE)) + c = *p; + c = FOLD (c); + for (--p; n < endp; ++n, no_leading_period2 = false) + if (FOLD ((UCHAR) *n) == c + && (FCT (p, n, string_end, no_leading_period2, flags2) + == 0)) + return 0; + } + } + + /* If we come here no match is possible with the wildcard. */ + return FNM_NOMATCH; + + case L('['): + { + /* Nonzero if the sense of the character class is inverted. */ + register bool not; + CHAR cold; + UCHAR fn; + + if (posixly_correct == 0) + posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1; + + if (n == string_end) + return FNM_NOMATCH; + + if (*n == L('.') && no_leading_period) + return FNM_NOMATCH; + + if (*n == L('/') && (flags & FNM_FILE_NAME)) + /* `/' cannot be matched. */ + return FNM_NOMATCH; + + not = (*p == L('!') || (posixly_correct < 0 && *p == L('^'))); + if (not) + ++p; + + fn = FOLD ((UCHAR) *n); + + c = *p++; + for (;;) + { + if (!(flags & FNM_NOESCAPE) && c == L('\\')) + { + if (*p == L('\0')) + return FNM_NOMATCH; + c = FOLD ((UCHAR) *p); + ++p; + + if (c == fn) + goto matched; + } + else if (c == L('[') && *p == L(':')) + { + /* Leave room for the null. */ + CHAR str[CHAR_CLASS_MAX_LENGTH + 1]; + size_t c1 = 0; +#if defined _LIBC || WIDE_CHAR_SUPPORT |