1 /* wxpaste.c- paste contents of cutbuffer to stdout
3 * Copyright (c) 1997-2003 Alfredo K. Kojima
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #define PROG_VERSION "wxpaste (Window Maker) 0.3"
22 #include "../src/config.h"
30 #include <X11/Xatom.h>
32 #include <sys/types.h>
33 #ifdef HAVE_SYS_SELECT_H
34 # include <sys/select.h>
37 #define MAXDATA (4*1024*1024)
39 void help(char *progn)
41 printf("Usage: %s [OPTIONS] [FILE]\n", progn);
42 puts("Copies data from X selection or cutbuffer to FILE or stdout.");
44 puts(" -display display display to use");
45 puts(" --cutbuffer number cutbuffer number to get data from");
46 puts(" --selection [selection] reads data from named selection instead of\n"
48 puts(" --help display this help and exit");
49 puts(" --version output version information and exit");
52 Time getTimestamp(Display * dpy, Window win)
56 /* So we do this trickery to get a time stamp:
58 * 1. Grab the server because we are paranoid and don't want to
59 * get in a race with another instance of wxpaste being ran at the
62 * 2. Set a dummy property in our window.
64 * 3. Get the PropertyNotify event and get it's timestamp.
66 * 4. Ungrab the server.
69 XSelectInput(dpy, win, PropertyChangeMask);
71 /* Generate a PropertyNotify event */
72 XStoreName(dpy, win, "shit");
74 /* wait for the event */
77 if (ev.type == PropertyNotify)
81 return ev.xproperty.time;
84 char *fetchSelection(Display * dpy, char *selection, char *progName)
86 Atom selatom = XInternAtom(dpy, selection, False);
87 Atom clipatom = XInternAtom(dpy, "CLIPBOARD", False);
92 struct timeval timeout;
95 win = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 0, 0, 1, 1, 0, 0, 0);
97 * The ICCCM says that we can't pass CurrentTime as the timestamp
98 * for XConvertSelection(), but we don't have anything to use as
101 now = getTimestamp(dpy, win);
103 XConvertSelection(dpy, selatom, XA_STRING, clipatom, win, now);
108 /* wait for the convertion */
112 if (XPending(dpy) == 0) {
114 FD_SET(ConnectionNumber(dpy), &fdset);
115 res = select(ConnectionNumber(dpy) + 1, &fdset, NULL, NULL, &timeout);
121 if (res > 0 || XPending(dpy) > 0) {
122 XNextEvent(dpy, &ev);
123 if (ev.type == SelectionNotify && ev.xany.window == win) {
130 /* if success, return the data */
134 unsigned long len, bytes;
137 if (XGetWindowProperty(dpy, win, clipatom, 0, MAXDATA / 4, False,
138 XA_STRING, &rtype, &bits, &len, &bytes, &data) != 0)
141 if ((rtype != XA_STRING) || (bits != 8)) {
150 int main(int argc, char **argv)
157 char *display_name = "";
158 char *selection_name = NULL;
160 for (i = 1; i < argc; i++) {
161 if (argv[i][0] == '-') {
162 if (argv[i][1] == 'h' || strcmp(argv[i], "--help") == 0) {
165 } else if (strcmp(argv[i], "--version") == 0) {
168 } else if (strcmp(argv[i], "-selection") == 0 || strcmp(argv[i], "--selection") == 0) {
170 selection_name = argv[++i];
172 selection_name = "PRIMARY";
174 } else if (strcmp(argv[i], "-display") == 0) {
176 display_name = argv[++i];
181 } else if (strcmp(argv[i], "-cutbuffer") == 0 || strcmp(argv[i], "--cutbuffer") == 0) {
184 if (sscanf(argv[i], "%i", &buffer) != 1) {
185 fprintf(stderr, "%s: could not convert \"%s\" to int\n",
189 if (buffer < 0 || buffer > 7) {
190 fprintf(stderr, "%s: invalid buffer number %i\n", argv[0], buffer);
194 fprintf(stderr, "%s: invalid argument '%s'\n", argv[0], argv[i]);
195 fprintf(stderr, "Try '%s --help' for more information.\n", argv[0]);
200 fprintf(stderr, "%s: invalid argument '%s'\n", argv[0], argv[i]);
201 fprintf(stderr, "Try '%s --help' for more information.\n", argv[0]);
205 dpy = XOpenDisplay(display_name);
207 fprintf(stderr, "%s: could not open display \"%s\"\n", argv[0], XDisplayName(display_name));
211 if (selection_name) {
212 buf = fetchSelection(dpy, selection_name, argv[0]);
218 buf = XFetchBuffer(dpy, &l, buffer);
224 if (write(STDOUT_FILENO, buf, l) == -1)