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Diffstat (limited to 'winsup/cygwin/fhandler_clipboard.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_clipboard.cc | 295 |
1 files changed, 0 insertions, 295 deletions
diff --git a/winsup/cygwin/fhandler_clipboard.cc b/winsup/cygwin/fhandler_clipboard.cc deleted file mode 100644 index c4f060578..000000000 --- a/winsup/cygwin/fhandler_clipboard.cc +++ /dev/null @@ -1,295 +0,0 @@ -/* fhandler_dev_clipboard: code to access /dev/clipboard - - Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009 - Red Hat, Inc - - Written by Charles Wilson (cwilson@ece.gatech.edu) - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -#include "winsup.h" -#include <wchar.h> -#include <wingdi.h> -#include <winuser.h> -#include "cygerrno.h" -#include "path.h" -#include "fhandler.h" - -/* - * Robert Collins: - * FIXME: should we use GetClipboardSequenceNumber to tell if the clipboard has - * changed? How does /dev/clipboard operate under (say) linux? - */ - -static const NO_COPY char *CYGWIN_NATIVE = "CYGWIN_NATIVE_CLIPBOARD"; -/* this is MT safe because windows format id's are atomic */ -static int cygnativeformat; - -fhandler_dev_clipboard::fhandler_dev_clipboard () - : fhandler_base (), pos (0), membuffer (NULL), msize (0), - eof (true) -{ - /* FIXME: check for errors and loop until we can open the clipboard */ - OpenClipboard (NULL); - cygnativeformat = RegisterClipboardFormat (CYGWIN_NATIVE); - CloseClipboard (); -} - -/* - * Special clipboard dup to duplicate input and output - * handles. - */ - -int -fhandler_dev_clipboard::dup (fhandler_base * child) -{ - fhandler_dev_clipboard *fhc = (fhandler_dev_clipboard *) child; - - if (!fhc->open (get_flags (), 0)) - system_printf ("error opening clipboard, %E"); - - fhc->membuffer = membuffer; - fhc->pos = pos; - fhc->msize = msize; - - return 0; -} - -int -fhandler_dev_clipboard::open (int flags, mode_t) -{ - set_flags (flags | O_TEXT); - eof = false; - pos = 0; - if (membuffer) - free (membuffer); - membuffer = NULL; - if (!cygnativeformat) - cygnativeformat = RegisterClipboardFormat (CYGWIN_NATIVE); - nohandle (true); - set_open_status (); - return 1; -} - -static int -set_clipboard (const void *buf, size_t len) -{ - HGLOBAL hmem; - void *clipbuf; - /* Native CYGWIN format */ - if (OpenClipboard (NULL)) - { - hmem = GlobalAlloc (GMEM_MOVEABLE, len + sizeof (size_t)); - if (!hmem) - { - __seterrno (); - CloseClipboard (); - return -1; - } - clipbuf = GlobalLock (hmem); - memcpy ((unsigned char *) clipbuf + sizeof (size_t), buf, len); - *(size_t *) (clipbuf) = len; - GlobalUnlock (hmem); - EmptyClipboard (); - if (!cygnativeformat) - cygnativeformat = RegisterClipboardFormat (CYGWIN_NATIVE); - HANDLE ret = SetClipboardData (cygnativeformat, hmem); - CloseClipboard (); - /* According to MSDN, hmem must not be free'd after transferring the - data to the clipboard via SetClipboardData. */ - /* GlobalFree (hmem); */ - if (!ret) - { - __seterrno (); - return -1; - } - } - - /* CF_TEXT/CF_OEMTEXT for copying to wordpad and the like */ - len = sys_mbstowcs (NULL, 0, (const char *) buf, len); - if (!len) - { - set_errno (EILSEQ); - return -1; - } - if (OpenClipboard (NULL)) - { - hmem = GlobalAlloc (GMEM_MOVEABLE, (len + 1) * sizeof (WCHAR)); - if (!hmem) - { - __seterrno (); - CloseClipboard (); - return -1; - } - clipbuf = GlobalLock (hmem); - sys_mbstowcs ((PWCHAR) clipbuf, len + 1, (const char *) buf); - GlobalUnlock (hmem); - HANDLE ret = SetClipboardData (CF_UNICODETEXT, hmem); - CloseClipboard (); - /* According to MSDN, hmem must not be free'd after transferring the - data to the clipboard via SetClipboardData. */ - /* GlobalFree (hmem); */ - if (!ret) - { - __seterrno (); - return -1; - } - } - return 0; -} - -/* FIXME: arbitrary seeking is not handled */ -ssize_t __stdcall -fhandler_dev_clipboard::write (const void *buf, size_t len) -{ - if (!eof) - { - /* write to our membuffer */ - size_t cursize = msize; - void *tempbuffer = realloc (membuffer, cursize + len); - if (!tempbuffer) - { - debug_printf ("Couldn't realloc() clipboard buffer for write"); - return -1; - } - membuffer = tempbuffer; - msize = cursize + len; - memcpy ((unsigned char *) membuffer + cursize, buf, len); - - /* now pass to windows */ - if (set_clipboard (membuffer, msize)) - { - /* FIXME: membuffer is now out of sync with pos, but msize - is used above */ - return -1; - } - - pos = msize; - - eof = false; - return len; - } - else - { - /* FIXME: return 0 bytes written, file not open */ - return 0; - } -} - -void __stdcall -fhandler_dev_clipboard::read (void *ptr, size_t& len) -{ - HGLOBAL hglb; - size_t ret; - UINT formatlist[2]; - int format; - size_t plen = len; - - len = 0; - if (eof) - return; - if (!OpenClipboard (NULL)) - return; - formatlist[0] = cygnativeformat; - formatlist[1] = CF_UNICODETEXT; - if ((format = GetPriorityClipboardFormat (formatlist, 2)) <= 0) - { - CloseClipboard (); - return; - } - if (!(hglb = GetClipboardData (format))) - { - CloseClipboard (); - return; - } - if (format == cygnativeformat) - { - unsigned char *buf; - - if (!(buf = (unsigned char *) GlobalLock (hglb))) - { - CloseClipboard (); - return; - } - size_t buflen = (*(size_t *) buf); - ret = ((plen > (buflen - pos)) ? (buflen - pos) : plen); - memcpy (ptr, buf + sizeof (size_t)+ pos , ret); - pos += ret; - if (pos + plen - ret >= buflen) - eof = true; - } - else - { - int wret; - PWCHAR buf; - - if (!(buf = (PWCHAR) GlobalLock (hglb))) - { - CloseClipboard (); - return; - } - size_t glen = GlobalSize (hglb) / sizeof (WCHAR) - 1; - /* This loop is necessary because the number of bytes returned by - sys_wcstombs does not indicate the number of wide chars used for - it, so we could potentially drop wide chars. */ - if (glen - pos > plen) - glen = pos + plen; - while ((wret = sys_wcstombs (NULL, 0, buf + pos, glen - pos)) != -1 - && (size_t) wret > plen) - --glen; - ret = sys_wcstombs ((char *) ptr, plen, buf + pos, glen - pos); - pos += ret; - if (pos + plen - ret >= wcslen (buf)) - eof = true; - } - GlobalUnlock (hglb); - CloseClipboard (); - len = ret; -} - -_off64_t -fhandler_dev_clipboard::lseek (_off64_t offset, int whence) -{ - /* On reads we check this at read time, not seek time. - * On writes we use this to decide how to write - empty and write, or open, copy, empty - * and write - */ - pos = offset; - /* treat seek like rewind */ - if (membuffer) - free (membuffer); - msize = 0; - return 0; -} - -int -fhandler_dev_clipboard::close () -{ - if (!hExeced) - { - eof = true; - pos = 0; - if (membuffer) - { - free (membuffer); - membuffer = NULL; - } - msize = 0; - } - return 0; -} - -void -fhandler_dev_clipboard::fixup_after_exec () -{ - if (!close_on_exec ()) - { - eof = false; - pos = msize = 0; - membuffer = NULL; - } -} |