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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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cmds
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select
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select.c
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C/C++ Source or Header
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1992-11-30
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/*
* select.c --
*
* This is a simple program that outputs the Sx selection on
* its standard output.
*
* Copyright 1987 Regents of the University of California
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. The University of California
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#ifndef lint
static char rcsid[] = "$Header: /sprite/src/cmds/select/RCS/select.c,v 1.2 92/06/04 17:11:03 jhh Exp $ SPRITE (Berkeley)";
#endif not lint
#include <stdio.h>
#include <tk.h>
#include <tcl.h>
#include <X11/Xatom.h>
typedef struct {
char *string; /* Contents of selection are
* here. This space is malloc-ed. */
int bytesAvl; /* Total number of bytes available
* at string. */
int bytesUsed; /* Bytes currently in use in string,
* not including the terminating
* NULL. */
} GetInfo;
static int SelGetProc _ARGS_((ClientData clientData, char *portion));
main()
{
Tk_Window window;
Tcl_Interp *interp;
int rc;
GetInfo getInfo;
interp = Tcl_CreateInterp();
if (interp == NULL) {
fprintf(stderr, "Couldn't create TCL interpreter\n");
exit(1);
}
window = Tk_CreateMainWindow(interp, NULL, "select");
if (window == NULL) {
fprintf(stderr, "%s\n", interp->result);
exit(1);
}
Tk_MakeWindowExist(window);
getInfo.string = (char *) ckalloc(100);
getInfo.bytesAvl = 100;
getInfo.bytesUsed = 0;
rc = Tk_GetSelection(interp, window, XA_STRING, SelGetProc,
(ClientData) &getInfo);
if (rc != TCL_OK) {
fprintf(stderr, "%s\n", interp->result);
exit(1);
}
write(1, getInfo.string, getInfo.bytesUsed);
exit(0);
}
/*
*--------------------------------------------------------------
*
* SelGetProc --
*
* This procedure is invoked to process pieces of the
* selection as they arrive during Tk_GetSelection.
*
* Results:
* Always returns TCL_OK.
*
* Side effects:
* Bytes are stored in getInfoPtr->string, which is
* expanded if necessary.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static int
SelGetProc(clientData, interp, portion)
ClientData clientData; /* Information about partially-
* assembled result. */
Tcl_Interp *interp; /* Interpreter used for error
* reporting (not used). */
char *portion; /* New information to be appended. */
{
register GetInfo *getInfoPtr = (GetInfo *) clientData;
int newLength;
newLength = strlen(portion) + getInfoPtr->bytesUsed;
/*
* Grow the result area if we've run out of space.
*/
if (newLength >= getInfoPtr->bytesAvl) {
char *newString;
getInfoPtr->bytesAvl *= 2;
if (getInfoPtr->bytesAvl <= newLength) {
getInfoPtr->bytesAvl = newLength + 1;
}
newString = (char *) ckalloc((unsigned) getInfoPtr->bytesAvl);
memcpy((char *) newString, (char *) getInfoPtr->string,
getInfoPtr->bytesUsed);
ckfree(getInfoPtr->string);
getInfoPtr->string = newString;
}
/*
* Append the new data to what was already there.
*/
strcpy(getInfoPtr->string + getInfoPtr->bytesUsed, portion);
getInfoPtr->bytesUsed = newLength;
return TCL_OK;
}