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authorpeter <peter@FreeBSD.org>2008-06-01 00:03:21 +0000
committerpeter <peter@FreeBSD.org>2008-06-01 00:03:21 +0000
commita2be5f0c15218b0177d73b17d9bcb7589965d685 (patch)
treec9f0cd9c22378356a1716d32e13e70bc90f98b9c /libio/filebuf.cc
parent9e0f3cc19c9df1594c9cc36cfd8fddc83c52ad12 (diff)
downloadFreeBSD-src-a2be5f0c15218b0177d73b17d9bcb7589965d685.zip
FreeBSD-src-a2be5f0c15218b0177d73b17d9bcb7589965d685.tar.gz
Reorganize the gcc vendor import work area. This flattens out a bunch
of unnecessary path components that are relics of cvs2svn. (These are directory moves)
Diffstat (limited to 'libio/filebuf.cc')
-rw-r--r--libio/filebuf.cc223
1 files changed, 223 insertions, 0 deletions
diff --git a/libio/filebuf.cc b/libio/filebuf.cc
new file mode 100644
index 0000000..0b0fd6d
--- /dev/null
+++ b/libio/filebuf.cc
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+/* This is part of libio/iostream, providing -*- C++ -*- input/output.
+Copyright (C) 1993, 1995, 1999 Free Software Foundation
+
+This file is part of the GNU IO Library. This library 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 library 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 library; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+As a special exception, if you link this library with files
+compiled with a GNU compiler to produce an executable, this does not cause
+the resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why
+the executable file might be covered by the GNU General Public License.
+
+Written by Per Bothner (bothner@cygnus.com). */
+
+#include "iostreamP.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include "builtinbuf.h"
+
+void filebuf::init()
+{
+ _IO_file_init(this);
+}
+
+filebuf::filebuf()
+{
+ _IO_file_init(this);
+}
+
+#if !_IO_UNIFIED_JUMPTABLES
+/* This is like "new filebuf()", but it uses the _IO_file_jump jumptable,
+ for eficiency. */
+
+filebuf* filebuf::__new()
+{
+ filebuf *fb = new filebuf;
+ _IO_JUMPS(fb) = &_IO_file_jumps;
+ fb->_vtable() = builtinbuf_vtable;
+ return fb;
+}
+#endif
+
+filebuf::filebuf(int fd)
+{
+ _IO_file_init(this);
+ _IO_file_attach(this, fd);
+}
+
+filebuf::filebuf(int fd, char* p, int len)
+{
+ _IO_file_init(this);
+ _IO_file_attach(this, fd);
+ setbuf(p, len);
+}
+
+filebuf::~filebuf()
+{
+ if (_IO_file_is_open(this))
+ {
+ _IO_do_flush (this);
+ if (!(xflags() & _IO_DELETE_DONT_CLOSE))
+ _IO_SYSCLOSE (this);
+ }
+}
+
+filebuf* filebuf::open(const char *filename, ios::openmode mode, int prot)
+{
+ if (_IO_file_is_open (this))
+ return NULL;
+ int posix_mode;
+ int read_write;
+ if (mode & ios::app)
+ mode |= ios::out;
+ if ((mode & (ios::in|ios::out)) == (ios::in|ios::out)) {
+ posix_mode = O_RDWR;
+ read_write = 0;
+ }
+ else if (mode & ios::out)
+ posix_mode = O_WRONLY, read_write = _IO_NO_READS;
+ else if (mode & (int)ios::in)
+ posix_mode = O_RDONLY, read_write = _IO_NO_WRITES;
+ else
+ posix_mode = 0, read_write = _IO_NO_READS+_IO_NO_WRITES;
+ if (mode & ios::binary)
+ {
+ mode &= ~ios::binary;
+#ifdef O_BINARY
+ /* This is a (mis-)feature of DOS/Windows C libraries. */
+ posix_mode |= O_BINARY;
+#endif
+ }
+ if ((mode & (int)ios::trunc) || mode == (int)ios::out)
+ posix_mode |= O_TRUNC;
+ if (mode & ios::app)
+ posix_mode |= O_APPEND, read_write |= _IO_IS_APPENDING;
+ if (!(mode & (int)ios::nocreate) && mode != ios::in)
+ posix_mode |= O_CREAT;
+ if (mode & (int)ios::noreplace)
+ posix_mode |= O_EXCL;
+#if _G_HAVE_IO_FILE_OPEN
+ if (!_IO_file_open (this, filename, posix_mode, prot,
+ read_write, 0))
+ return NULL;
+ if (mode & ios::ate) {
+ if (pubseekoff(0, ios::end) == EOF) {
+ _IO_un_link (this);
+ return NULL;
+ }
+ }
+ return this;
+#else
+ int fd = ::open(filename, posix_mode, prot);
+ if (fd < 0)
+ return NULL;
+ _fileno = fd;
+ xsetflags(read_write, _IO_NO_READS+_IO_NO_WRITES+_IO_IS_APPENDING);
+ if (mode & ios::ate) {
+ if (pubseekoff(0, ios::end) == EOF)
+ return NULL;
+ }
+ _IO_link_in(this);
+ return this;
+#endif
+}
+
+filebuf* filebuf::open(const char *filename, const char *mode)
+{
+#if _G_IO_IO_FILE_VERSION == 0x20001
+ return (filebuf*)_IO_file_fopen(this, filename, mode, 0);
+#else
+ return (filebuf*)_IO_file_fopen(this, filename, mode);
+#endif
+}
+
+filebuf* filebuf::attach(int fd)
+{
+ return (filebuf*)_IO_file_attach(this, fd);
+}
+
+streambuf* filebuf::setbuf(char* p, int len)
+{
+ return (streambuf*)_IO_file_setbuf (this, p, len);
+}
+
+int filebuf::doallocate() { return _IO_file_doallocate(this); }
+
+int filebuf::overflow(int c)
+{
+ return _IO_file_overflow(this, c);
+}
+
+int filebuf::underflow()
+{
+ return _IO_file_underflow(this);
+}
+
+int filebuf::sync()
+{
+ return _IO_file_sync(this);
+}
+
+streampos filebuf::seekoff(streamoff offset, _seek_dir dir, int mode)
+{
+ return _IO_file_seekoff (this, offset, dir, mode);
+}
+
+filebuf* filebuf::close()
+{
+ return (_IO_file_close_it(this) ? (filebuf*)NULL : this);
+}
+
+streamsize filebuf::sys_read(char* buf, streamsize size)
+{
+ return _IO_file_read(this, buf, size);
+}
+
+streampos filebuf::sys_seek(streamoff offset, _seek_dir dir)
+{
+ return _IO_file_seek(this, offset, dir);
+}
+
+streamsize filebuf::sys_write(const char *buf, streamsize n)
+{
+ return _IO_file_write (this, buf, n);
+}
+
+int filebuf::sys_stat(void* st)
+{
+ return _IO_file_stat (this, st);
+}
+
+int filebuf::sys_close()
+{
+ return _IO_file_close (this);
+}
+
+streamsize filebuf::xsputn(const char *s, streamsize n)
+{
+ return _IO_file_xsputn(this, s, n);
+}
+
+streamsize filebuf::xsgetn(char *s, streamsize n)
+{
+ // FIXME: OPTIMIZE THIS (specifically, when unbuffered()).
+ return streambuf::xsgetn(s, n);
+}
+
+// Non-ANSI AT&T-ism: Default open protection.
+const int filebuf::openprot = 0644;
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