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/* wxpaste.c- paste contents of cutbuffer to stdout
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* Copyright (c) 1997-2003 Alfredo K. Kojima
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#define PROG_VERSION "wxpaste (Window Maker) 0.3"
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#include "../src/config.h"
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#include <X11/Xatom.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_SELECT_H
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# include <sys/select.h>
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#define MAXDATA (4*1024*1024)
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printf("Usage: %s [OPTIONS] [FILE]\n", progn);
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puts("Copies data from X selection or cutbuffer to FILE or stdout.");
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puts(" -display display display to use");
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puts(" --cutbuffer number cutbuffer number to get data from");
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puts(" --selection [selection] reads data from named selection instead of\n"
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puts(" --help display this help and exit");
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puts(" --version output version information and exit");
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getTimestamp(Display *dpy, Window win)
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/* So we do this trickery to get a time stamp:
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* 1. Grab the server because we are paranoid and don't want to
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* get in a race with another instance of wxpaste being ran at the
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* 2. Set a dummy property in our window.
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* 3. Get the PropertyNotify event and get it's timestamp.
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* 4. Ungrab the server.
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XSelectInput(dpy, win, PropertyChangeMask);
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/* Generate a PropertyNotify event */
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XStoreName(dpy, win, "shit");
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/* wait for the event */
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if (ev.type == PropertyNotify)
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return ev.xproperty.time;
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fetchSelection(Display *dpy, char *selection, char *progName)
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Atom selatom = XInternAtom(dpy, selection, False);
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Atom clipatom = XInternAtom(dpy, "CLIPBOARD", False);
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struct timeval timeout;
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win = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 0, 0, 1, 1,
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* The ICCCM says that we can't pass CurrentTime as the timestamp
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* for XConvertSelection(), but we don't have anything to use as
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now = getTimestamp(dpy, win);
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XConvertSelection(dpy, selatom, XA_STRING, clipatom, win, now);
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/* wait for the convertion */
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if (XPending(dpy)==0) {
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FD_SET(ConnectionNumber(dpy), &fdset);
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res = select(ConnectionNumber(dpy)+1, &fdset, NULL, NULL,
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if (res > 0 || XPending(dpy) > 0) {
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XNextEvent(dpy, &ev);
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if (ev.type == SelectionNotify && ev.xany.window == win) {
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/* if success, return the data */
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unsigned long len, bytes;
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if (XGetWindowProperty(dpy, win, clipatom, 0, MAXDATA/4, False,
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XA_STRING, &rtype, &bits, &len, &bytes, &data)!=0)
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if ((rtype!=XA_STRING) || (bits!=8)) {
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main(int argc, char **argv)
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char *display_name="";
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char *selection_name=NULL;
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for (i=1; i<argc; i++) {
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if (argv[i][0]=='-') {
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if (argv[i][1]=='h' || strcmp(argv[i], "--help")==0) {
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} else if (strcmp(argv[i], "--version")==0) {
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} else if (strcmp(argv[i],"-selection")==0
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|| strcmp(argv[i],"--selection")==0) {
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selection_name = argv[++i];
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selection_name = "PRIMARY";
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} else if (strcmp(argv[i],"-display")==0) {
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display_name = argv[++i];
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} else if (strcmp(argv[i],"-cutbuffer")==0
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|| strcmp(argv[i],"--cutbuffer")==0) {
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if (sscanf(argv[i],"%i", &buffer)!=1) {
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fprintf(stderr, "%s: could not convert \"%s\" to int\n",
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if (buffer<0 || buffer > 7) {
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fprintf(stderr, "%s: invalid buffer number %i\n",
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fprintf(stderr, "%s: invalid argument '%s'\n", argv[0],
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fprintf(stderr, "Try '%s --help' for more information.\n",
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fprintf(stderr, "%s: invalid argument '%s'\n", argv[0], argv[i]);
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fprintf(stderr, "Try '%s --help' for more information.\n",
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dpy = XOpenDisplay(display_name);
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fprintf(stderr, "%s: could not open display \"%s\"\n", argv[0],
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XDisplayName(display_name));
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if (selection_name) {
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buf = fetchSelection(dpy, selection_name, argv[0]);
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buf = XFetchBuffer(dpy, &l, buffer);
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if (write(STDOUT_FILENO, buf, l) == -1)