118 lines
3 KiB
C
118 lines
3 KiB
C
/*
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Copyright 1989, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <X11/Xlibint.h>
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#include <X11/Xatom.h>
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#include <X11/Xutil.h>
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#include "reallocarray.h"
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/*
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* XTextPropertyToStringList - set list and count to contain data stored in
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* null-separated STRING property.
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*/
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Status XTextPropertyToStringList (
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XTextProperty *tp,
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char ***list_return,
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int *count_return)
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{
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char **list; /* return value */
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int nelements; /* return value */
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register char *cp; /* temp variable */
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char *start; /* start of thing to copy */
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int i, j; /* iterator variables */
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int datalen = (int) tp->nitems; /* for convenience */
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/*
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* make sure we understand how to do it
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*/
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if (tp->encoding != XA_STRING || tp->format != 8) return False;
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if (datalen == 0) {
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*list_return = NULL;
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*count_return = 0;
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return True;
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}
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/*
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* walk the list to figure out how many elements there are
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*/
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nelements = 1; /* since null-separated */
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for (cp = (char *) tp->value, i = datalen; i > 0; cp++, i--) {
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if (*cp == '\0') nelements++;
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}
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/*
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* allocate list and duplicate
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*/
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list = Xmallocarray (nelements, sizeof (char *));
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if (!list) return False;
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start = Xmalloc ((datalen + 1) * sizeof (char)); /* for <NUL> */
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if (!start) {
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Xfree (list);
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return False;
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}
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/*
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* copy data
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*/
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memcpy (start, (char *) tp->value, tp->nitems);
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start[datalen] = '\0';
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/*
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* walk down list setting value
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*/
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for (cp = start, i = datalen + 1, j = 0; i > 0; cp++, i--) {
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if (*cp == '\0') {
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list[j] = start;
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start = (cp + 1);
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j++;
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}
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}
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/*
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* append final null pointer and then return data
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*/
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*list_return = list;
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*count_return = nelements;
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return True;
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}
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void XFreeStringList (char **list)
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{
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if (list) {
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if (list[0]) Xfree (list[0]);
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Xfree (list);
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list = NULL;
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}
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}
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