#include <math.h>
#include <errno.h>
#include <assert.h>
+#include <ctype.h>
+
+#include <unistd.h>
#include <X11/X.h>
+#include <X11/Intrinsic.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
int use_clipboard = False;
char *custom_seltype = NULL;
int fork_when_writing = True;
+int use_cutbuffers = True;
+int use_outgoing_incr = True;
+int sel_delta = 16384;
/* selection data */
char *seltext;
int sellen, selsize;
-#define SELDELTA 16384
+
+/* incremental transfers still pending when we return to the event loop */
+struct incr {
+ Window window;
+ Atom property;
+ Atom type;
+ int format;
+ unsigned char *data;
+ size_t size;
+} *incrs = NULL;
+int nincrs = 0, incrsize = 0;
/* functional parameters */
int reading; /* read instead of writing? */
const char usagemsg[] =
"usage: xcopy [ -r ] [ -u | -c ] [ -C ]\n"
- "where: -r read X selection and print on stdout\n"
- " no -r read stdin and store in X selection\n"
- " -u work with UTF8_STRING type selections\n"
- " -c work with COMPOUND_TEXT type selections\n"
- " -C suppress automatic conversion to COMPOUND_TEXT\n"
- " -b read the CLIPBOARD rather than the PRIMARY selection\n"
- " -t get the list of targets available to retrieve\n"
+ "modes: -r read X selection and print on stdout\n"
+ " no -r write to X selection from stdin\n"
+ " read: -t get the list of targets available to retrieve\n"
" -T get the time stamp of the selection contents\n"
" -a atom get an arbitrary form of the selection data\n"
- " -F do not fork in write mode\n"
- " -v proceed verbosely when reading selection\n"
+ " -v verbosely report progress in reading selection\n"
+ "write: -F remain in foreground until selection reclaimed\n"
+ " -I do not attempt incremental transfers (INCR)\n"
+ " both: -u work with UTF8_STRING type selections\n"
+ " -c work with COMPOUND_TEXT type selections\n"
+ " -C suppress automatic conversion to COMPOUND_TEXT\n"
+ " -b use the CLIPBOARD rather than the PRIMARY selection\n"
+ " -d size transfer data in chunks of at most <size> (default 16384)\n"
+ " -B do not use root window cut buffers\n"
" also: xcopy --version report version number\n"
" xcopy --help display this help text\n"
" xcopy --licence display the (MIT) licence text\n"
mode = TARGETS;
} else if (!strcmp(p, "-T")) {
mode = TIMESTAMP;
+ } else if (!strcmp(p, "-I")) {
+ use_outgoing_incr = False;
+ } else if (!strcmp(p, "-B")) {
+ use_cutbuffers = False;
} else if (!strcmp(p, "-a")) {
if (--ac > 0)
custom_seltype = *++av;
else
error ("expected an argument to `-a'");
mode = CUSTOM;
+ } else if (!strcmp(p, "-d")) {
+ if (--ac > 0)
+ sel_delta = atoi(*++av);
+ else
+ error ("expected an argument to `-d'");
} else if (!strcmp(p, "-F")) {
fork_when_writing = False;
} else if (!strcmp(p, "-v")) {
}
if (!reading) {
- seltext = malloc(SELDELTA);
+ seltext = malloc(sel_delta);
if (!seltext)
error ("out of memory");
- selsize = SELDELTA;
+ selsize = sel_delta;
sellen = 0;
do {
n = fread(seltext+sellen, 1, selsize-sellen, stdin);
sellen += n;
if (sellen >= selsize) {
- seltext = realloc(seltext, selsize += SELDELTA);
+ seltext = realloc(seltext, selsize += sel_delta);
if (!seltext)
error ("out of memory");
}
} while (n > 0);
if (sellen == selsize) {
- seltext = realloc(seltext, selsize += SELDELTA);
+ seltext = realloc(seltext, selsize += sel_delta);
if (!seltext)
error ("out of memory");
}
* property on the root window.
*/
XSelectInput(disp, ourwin, PropertyChangeMask);
- if (XGetSelectionOwner(disp, sel_atom) == None) {
- /* No primary selection, so use the cut buffer. */
- if (verbose)
- fprintf(stderr, "no selection owner: trying cut buffer\n");
- if (strtype == XA_STRING)
- do_paste(DefaultRootWindow(disp), XA_CUT_BUFFER0, True);
- return False;
- } else {
+ if (XGetSelectionOwner(disp, sel_atom) != None) {
Atom sel_property = XInternAtom(disp, "VT_SELECTION", False);
if (verbose)
fprintf(stderr, "calling XConvertSelection: selection=%s"
XConvertSelection(disp, sel_atom, strtype,
sel_property, ourwin, CurrentTime);
return True;
+ } else if (use_cutbuffers) {
+ /* No primary selection, so use the cut buffer. */
+ if (verbose)
+ fprintf(stderr, "no selection owner: trying cut buffer\n");
+ if (strtype == XA_STRING)
+ do_paste(DefaultRootWindow(disp), XA_CUT_BUFFER0, True);
+ return False;
+ } else {
+ /* Last fallback: do nothing. */
+ return False;
}
} else {
/*
- * We are writing to the selection, so we establish
- * ourselves as selection owner. Also place the data in
- * CUT_BUFFER0, if it isn't of an exotic type (cut buffers
- * can only take ordinary string data, it turns out).
+ * We are writing to the selection, so we establish ourselves
+ * as selection owner.
+ *
+ * Also place the data in CUT_BUFFER0, if it isn't of an
+ * exotic type (cut buffers can only take ordinary string
+ * data, it turns out) or bigger than our maximum chunk size.
*/
XSetSelectionOwner (disp, sel_atom, ourwin, CurrentTime);
if (XGetSelectionOwner (disp, sel_atom) != ourwin)
error ("unable to obtain primary X selection");
compound_text_atom = XInternAtom(disp, "COMPOUND_TEXT", False);
- if (strtype == XA_STRING) {
+ if (strtype == XA_STRING && sellen <= sel_delta && use_cutbuffers) {
/*
* ICCCM-required cut buffer initialisation.
*/
+ static const unsigned char emptystring[] = {0};
XChangeProperty(disp, root, XA_CUT_BUFFER0,
- XA_STRING, 8, PropModeAppend, "", 0);
+ XA_STRING, 8, PropModeAppend, emptystring, 0);
XChangeProperty(disp, root, XA_CUT_BUFFER1,
- XA_STRING, 8, PropModeAppend, "", 0);
+ XA_STRING, 8, PropModeAppend, emptystring, 0);
XChangeProperty(disp, root, XA_CUT_BUFFER2,
- XA_STRING, 8, PropModeAppend, "", 0);
+ XA_STRING, 8, PropModeAppend, emptystring, 0);
XChangeProperty(disp, root, XA_CUT_BUFFER3,
- XA_STRING, 8, PropModeAppend, "", 0);
+ XA_STRING, 8, PropModeAppend, emptystring, 0);
XChangeProperty(disp, root, XA_CUT_BUFFER4,
- XA_STRING, 8, PropModeAppend, "", 0);
+ XA_STRING, 8, PropModeAppend, emptystring, 0);
XChangeProperty(disp, root, XA_CUT_BUFFER5,
- XA_STRING, 8, PropModeAppend, "", 0);
+ XA_STRING, 8, PropModeAppend, emptystring, 0);
XChangeProperty(disp, root, XA_CUT_BUFFER6,
- XA_STRING, 8, PropModeAppend, "", 0);
+ XA_STRING, 8, PropModeAppend, emptystring, 0);
XChangeProperty(disp, root, XA_CUT_BUFFER7,
- XA_STRING, 8, PropModeAppend, "", 0);
+ XA_STRING, 8, PropModeAppend, emptystring, 0);
/*
* Rotate the cut buffers and add our text in CUT_BUFFER0.
*/
}
}
+void write_data(Window requestor, Atom property, Atom type, int format,
+ void *vdata, size_t size)
+{
+ int bformat = format / 8; /* bytes per element */
+ unsigned char *data = (unsigned char *)vdata;
+ XEvent ev;
+
+ if (!use_outgoing_incr || size * bformat <= sel_delta) {
+ XChangeProperty(disp, requestor, property, type, format,
+ PropModeReplace, data, size);
+ } else {
+ /*
+ * For large data, an incremental transfer as per ICCCM 2.7.2.
+ */
+ Cardinal totalsize = size * bformat;
+ Cardinal sent, thissize;
+
+ /*
+ * We're going to need PropertyNotify events on the target
+ * window to tell us when to send the next chunk.
+ */
+ XSelectInput(disp, requestor, PropertyChangeMask);
+
+ /*
+ * Start by sending a single 32-bit word with type INCR giving
+ * the total size in bytes.
+ */
+ XChangeProperty(disp, requestor, property, incr_atom, 32,
+ PropModeReplace, (unsigned char *)&totalsize, 1);
+
+ /*
+ * Now set up an entry in our list of ongoing incremental
+ * transfers, so that whenever that property is deleted, we'll
+ * send the next batch.
+ */
+ if (nincrs >= incrsize) {
+ incrsize = nincrs * 9 / 8 + 16;
+ incrs = realloc(incrs, incrsize * sizeof(*incrs));
+ if (!incrs)
+ error ("out of memory");
+ }
+ incrs[nincrs].window = requestor;
+ incrs[nincrs].property = property;
+ incrs[nincrs].type = type;
+ incrs[nincrs].format = format;
+ incrs[nincrs].size = totalsize;
+ incrs[nincrs].data = malloc(totalsize);
+ if (!incrs[nincrs].data)
+ error("out of memory");
+ memcpy(incrs[nincrs].data, data, size);
+ nincrs++;
+ }
+}
+
Atom convert_sel_inner(Window requestor, Atom target, Atom property) {
if (target == strtype) {
- XChangeProperty (disp, requestor, property, strtype,
- 8, PropModeReplace, seltext, sellen);
+ write_data(requestor, property, strtype, 8, seltext, sellen);
return property;
} else if (target == compound_text_atom && convert_to_ctext) {
XTextProperty tp;
- XmbTextListToTextProperty (disp, &seltext, 1,
- XCompoundTextStyle, &tp);
- XChangeProperty (disp, requestor, property, target,
- tp.format, PropModeReplace,
- tp.value, tp.nitems);
+ XmbTextListToTextProperty(disp, &seltext, 1, XCompoundTextStyle, &tp);
+ write_data(requestor, property, target, tp.format, tp.value,tp.nitems);
return property;
} else if (target == targets_atom) {
Atom targets[16];
targets[len++] = strtype;
if (strtype != compound_text_atom && convert_to_ctext)
targets[len++] = compound_text_atom;
- XChangeProperty (disp, requestor, property,
- atom_atom, 32, PropModeReplace,
- (unsigned char *)targets, len);
+ write_data(requestor, property, atom_atom, 32, targets, len);
return property;
} else if (target == timestamp_atom) {
Time rettime = CurrentTime;
- XChangeProperty (disp, requestor, property,
- integer_atom, 32, PropModeReplace,
- (unsigned char *)&rettime, 1);
+ write_data(requestor, property, integer_atom, 32, &rettime, 1);
return property;
} else {
return None;
}
Atom convert_sel_outer(Window requestor, Atom target, Atom property) {
+ /*
+ * ICCCM 2.2 says that obsolete clients requesting the selection
+ * request may not specify a property name under which they want
+ * the data written to their window; selection owners are
+ * encouraged to support such clients by reusing the selection
+ * target name as the property.
+ */
+ if (property == None)
+ property = target;
+
if (target == multiple_atom) {
/*
* Support for the MULTIPLE selection type, since it's
* application might implement it for me to test against.
*/
- int size = SELDELTA;
+ int size = sel_delta;
Atom actual_type;
int actual_format, i;
- long nitems, bytes_after, nread;
+ unsigned long nitems, bytes_after, nread;
unsigned char *data;
Atom *adata;
adata = (Atom *)data;
- for (i = 0; i+1 < nitems; i += 2) {
+ for (i = 0; i+1 < (long)nitems; i += 2) {
if (adata[i+1] != (Atom)None) /* ICCCM says this isn't allowed */
adata[i+1] = convert_sel_inner(requestor, adata[i],
adata[i+1]);
void run_X(void) {
XEvent ev, e2;
+ int i, j;
while (1) {
XNextEvent (disp, &ev);
return;
}
} else {
+ int have_ownership = True;
+
switch (ev.type) {
case SelectionClear:
/* Selection has been cleared by another app. */
- return;
+ have_ownership = False;
+ break;
case SelectionRequest:
- e2.xselection.type = SelectionNotify;
- e2.xselection.requestor = ev.xselectionrequest.requestor;
- e2.xselection.selection = ev.xselectionrequest.selection;
- e2.xselection.target = ev.xselectionrequest.target;
- e2.xselection.time = ev.xselectionrequest.time;
- e2.xselection.property =
- convert_sel_outer(ev.xselectionrequest.requestor,
- ev.xselectionrequest.target,
- ev.xselectionrequest.property);
- XSendEvent (disp, ev.xselectionrequest.requestor,
- False, 0, &e2);
+ if (have_ownership) {
+ e2.xselection.type = SelectionNotify;
+ e2.xselection.requestor = ev.xselectionrequest.requestor;
+ e2.xselection.selection = ev.xselectionrequest.selection;
+ e2.xselection.target = ev.xselectionrequest.target;
+ e2.xselection.time = ev.xselectionrequest.time;
+ e2.xselection.property =
+ convert_sel_outer(ev.xselectionrequest.requestor,
+ ev.xselectionrequest.target,
+ ev.xselectionrequest.property);
+ XSendEvent (disp, ev.xselectionrequest.requestor,
+ False, 0, &e2);
+ }
+ break;
+ case PropertyNotify:
+ for (i = j = 0; i < nincrs; i++) {
+ int keep = True;
+ if (incrs[i].window == ev.xproperty.window &&
+ incrs[i].property == ev.xproperty.atom &&
+ ev.xproperty.state == PropertyDelete) {
+ size_t thissize = incrs[i].size;
+ if (thissize > sel_delta)
+ thissize = sel_delta;
+
+ XChangeProperty(disp,
+ incrs[i].window, incrs[i].property,
+ incrs[i].type, incrs[i].format,
+ PropModeReplace, incrs[i].data,
+ thissize / (incrs[i].format/8));
+
+ if (thissize == 0) {
+ /*
+ * If we've just sent a zero-length block,
+ * the incremental transfer is over and we
+ * should delete this entry.
+ */
+ keep = False;
+ }
+
+ incrs[i].data += thissize;
+ incrs[i].size -= thissize;
+ }
+ if (keep) {
+ if (j != i)
+ incrs[j] = incrs[i];
+ j++;
+ }
+ }
+ nincrs = j;
+ break;
}
+ if (nincrs == 0 && !have_ownership)
+ return;
}
}
}
void do_paste(Window window, Atom property, int cutbuffer) {
Atom actual_type;
int actual_format, i;
- long nitems, bytes_after, nread;
+ unsigned long nitems, bytes_after, nread;
unsigned char *data;
int incremental = False;
XEvent ev;
nread = 0;
- while (XGetWindowProperty(disp, window, property, nread / 4, SELDELTA,
+ while (XGetWindowProperty(disp, window, property, nread / 4, sel_delta / 4,
!cutbuffer, AnyPropertyType, &actual_type,
&actual_format, &nitems, &bytes_after,
(unsigned char **) &data) == Success) {
~mdw / sgt / utils / blobdiff