From: Bruno Haible Date: Sat, 20 Oct 2001 13:09:15 +0000 (+0000) Subject: Subroutine for copying regular files. X-Git-Tag: v0.11~446 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=924e7ac34e7bfbf1c9d1b0138006270b6a69dc66;p=thirdparty%2Fgettext.git Subroutine for copying regular files. --- diff --git a/ChangeLog b/ChangeLog index 9d03bcad8..57bff6425 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +2001-09-17 Bruno Haible + + * configure.in: Check for utime and utimes. + 2001-09-08 Bruno Haible * configure.in (AC_OUTPUT): Add intl-java/Makefile. diff --git a/configure.in b/configure.in index 8be2817a7..4bb0fe556 100644 --- a/configure.in +++ b/configure.in @@ -67,7 +67,7 @@ dnl Checks for library functions. AC_FUNC_ALLOCA AC_FUNC_VPRINTF AC_CHECK_FUNCS([getcwd mblen memcpy posix_spawn raise select strchr strerror \ -uname]) +uname utime utimes]) AC_REPLACE_FUNCS([memset stpcpy stpncpy strcspn \ strcasecmp strncasecmp strpbrk strstr strtoul vasprintf]) AM_FUNC_GETLINE diff --git a/lib/ChangeLog b/lib/ChangeLog index 73b737ed0..ca6b83806 100644 --- a/lib/ChangeLog +++ b/lib/ChangeLog @@ -1,3 +1,10 @@ +2001-09-17 Bruno Haible + + * copy-file.h: New file. + * copy-file.c: New file. + * Makefile.am (libnlsut_a_SOURCES): Add copy-file.c. + (libnlsut_a_HEADER): Add copy-file.h. + 2001-09-17 Bruno Haible * basename.h: New file. diff --git a/lib/copy-file.c b/lib/copy-file.c new file mode 100644 index 000000000..130ef665f --- /dev/null +++ b/lib/copy-file.c @@ -0,0 +1,115 @@ +/* Copying of files. + Copyright (C) 2001 Free Software Foundation, Inc. + Written by Bruno Haible , 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 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 "copy-file.h" + +#include +#include + +#if HAVE_UTIME || HAVE_UTIMES +# include +#endif + +#include "error.h" +#include "full-write.h" +#include "system.h" +#include "libgettext.h" + +#define _(str) gettext (str) + +/* On reasonable systems, binary I/O is the default. */ +#ifndef O_BINARY +# define O_BINARY 0 +#endif + +void +copy_file (src_filename, dest_filename) + const char *src_filename; + const char *dest_filename; +{ + int src_fd; + struct stat statbuf; + int mode; + int dest_fd; + char buf[4096]; + const int buf_size = sizeof (buf); + + src_fd = open (src_filename, O_RDONLY | O_BINARY); + if (src_fd < 0 || fstat (src_fd, &statbuf) < 0) + error (EXIT_FAILURE, errno, _("error while opening \"%s\" for reading"), + src_filename); + + mode = statbuf.st_mode & 07777; + + dest_fd = open (dest_filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0600); + if (dest_fd < 0) + error (EXIT_FAILURE, errno, _("cannot open backup file \"%s\" for writing"), + dest_filename); + + /* Copy the file contents. */ + for (;;) + { + ssize_t n_read = read (src_fd, buf, buf_size); + if (n_read < 0) + { +#ifdef EINTR + if (errno == EINTR) + continue; +#endif + error (EXIT_FAILURE, errno, _("error reading \"%s\""), src_filename); + } + if (n_read == 0) + break; + + if (full_write (dest_fd, buf, n_read) < 0) + error (EXIT_FAILURE, errno, _("error writing \"%s\""), dest_filename); + } + + if (close (dest_fd) < 0) + error (EXIT_FAILURE, errno, _("error writing \"%s\""), dest_filename); + if (close (src_fd) < 0) + error (EXIT_FAILURE, errno, _("error after reading \"%s\""), src_filename); + + /* Preserve the access and modification times. */ +#if HAVE_UTIME + { + struct utimbuf ut; + + ut.actime = statbuf.st_atime; + ut.modtime = statbuf.st_mtime; + utime (dest_filename, &ut); + } +#elif HAVE_UTIMES + { + struct timeval ut[2]; + + ut[0].tv_sec = statbuf.st_atime; ut[0].tv_usec = 0; + ut[1].tv_sec = statbuf.st_mtime; ut[1].tv_usec = 0; + utimes (dest_filename, &ut); + } +#endif + + /* Preserve the access permissions. */ + chmod (dest_filename, mode); +} diff --git a/lib/copy-file.h b/lib/copy-file.h new file mode 100644 index 000000000..ce68dd21b --- /dev/null +++ b/lib/copy-file.h @@ -0,0 +1,23 @@ +/* Copying of files. + Copyright (C) 2001 Free Software Foundation, Inc. + Written by Bruno Haible , 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 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. */ + +/* Copy a reular file: from src_filename to dest_filename. + The destination file is assumed to be a backup file. + Exit upon failure. */ +extern void copy_file PARAMS ((const char *src_filename, + const char *dest_filename));