diff options
Diffstat (limited to 'libX11/src/XlibAsync.c')
-rw-r--r-- | libX11/src/XlibAsync.c | 309 |
1 files changed, 154 insertions, 155 deletions
diff --git a/libX11/src/XlibAsync.c b/libX11/src/XlibAsync.c index b4483ef6b..db8cba807 100644 --- a/libX11/src/XlibAsync.c +++ b/libX11/src/XlibAsync.c @@ -1,155 +1,154 @@ -/* - -Copyright 1992, 1998 The Open Group - -Permission to use, copy, modify, distribute, and sell this software and its -documentation for any purpose is hereby granted without fee, provided that -the above copyright notice appear in all copies and that both that -copyright notice and this permission notice appear in supporting -documentation. - -The above copyright notice and this permission notice shall be included -in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR -OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, -ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR -OTHER DEALINGS IN THE SOFTWARE. - -Except as contained in this notice, the name of The Open Group shall -not be used in advertising or otherwise to promote the sale, use or -other dealings in this Software without prior written authorization -from The Open Group. - -*/ - -#define NEED_REPLIES -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <X11/Xlibint.h> -#include <X11/Xos.h> - -/*ARGSUSED*/ -Bool -_XAsyncErrorHandler( - register Display *dpy, - register xReply *rep, - char *buf, - int len, - XPointer data) -{ - register _XAsyncErrorState *state; - - state = (_XAsyncErrorState *)data; - if (rep->generic.type == X_Error && - (!state->error_code || - rep->error.errorCode == state->error_code) && - (!state->major_opcode || - rep->error.majorCode == state->major_opcode) && - (!state->minor_opcode || - rep->error.minorCode == state->minor_opcode) && - (!state->min_sequence_number || - (state->min_sequence_number <= dpy->last_request_read)) && - (!state->max_sequence_number || - (state->max_sequence_number >= dpy->last_request_read))) { - state->last_error_received = rep->error.errorCode; - state->error_count++; - return True; - } - return False; -} - -void _XDeqAsyncHandler( - Display *dpy, - register _XAsyncHandler *handler) -{ - register _XAsyncHandler **prev; - register _XAsyncHandler *async; - - for (prev = &dpy->async_handlers; - (async = *prev) && (async != handler); - prev = &async->next) - ; - if (async) - *prev = async->next; -} - -char * -_XGetAsyncReply( - register Display *dpy, - register char *replbuf, /* data is read into this buffer */ - register xReply *rep, /* value passed to calling handler */ - char *buf, /* value passed to calling handler */ - int len, /* value passed to calling handler */ - int extra, /* extra words to read, ala _XReply */ - Bool discard) /* discard after extra?, ala _XReply */ -{ - if (extra == 0) { - if (discard && (rep->generic.length << 2) > len) - _XEatData (dpy, (rep->generic.length << 2) - len); - return (char *)rep; - } - - if (extra <= rep->generic.length) { - int size = SIZEOF(xReply) + (extra << 2); - if (size > len) { - memcpy(replbuf, buf, len); - _XRead(dpy, replbuf + len, size - len); - buf = replbuf; - len = size; -#ifdef MUSTCOPY - } else { - memcpy(replbuf, buf, size); - buf = replbuf; -#endif - } - - if (discard && rep->generic.length > extra && - (rep->generic.length << 2) > len) - _XEatData (dpy, (rep->generic.length << 2) - len); - - return buf; - } - /* - *if we get here, then extra > rep->generic.length--meaning we - * read a reply that's shorter than we expected. This is an - * error, but we still need to figure out how to handle it... - */ - if ((rep->generic.length << 2) > len) - _XEatData (dpy, (rep->generic.length << 2) - len); - _XIOError (dpy); - return (char *)rep; -} - -void -_XGetAsyncData( - Display *dpy, - char *data, /* data is read into this buffer */ - char *buf, /* value passed to calling handler */ - int len, /* value passed to calling handler */ - int skip, /* number of bytes already read in previous - _XGetAsyncReply or _XGetAsyncData calls */ - int datalen, /* size of data buffer in bytes */ - int discardtotal) /* min. bytes to consume (after skip) */ -{ - buf += skip; - len -= skip; - if (!data) { - if (datalen > len) - _XEatData(dpy, datalen - len); - } else if (datalen <= len) { - memcpy(data, buf, datalen); - } else { - memcpy(data, buf, len); - _XRead(dpy, data + len, datalen - len); - } - if (discardtotal > len) { - if (datalen > len) - len = datalen; - _XEatData(dpy, discardtotal - len); - } -} +/*
+
+Copyright 1992, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/Xlibint.h>
+#include <X11/Xos.h>
+
+/*ARGSUSED*/
+Bool
+_XAsyncErrorHandler(
+ register Display *dpy,
+ register xReply *rep,
+ char *buf,
+ int len,
+ XPointer data)
+{
+ register _XAsyncErrorState *state;
+
+ state = (_XAsyncErrorState *)data;
+ if (rep->generic.type == X_Error &&
+ (!state->error_code ||
+ rep->error.errorCode == state->error_code) &&
+ (!state->major_opcode ||
+ rep->error.majorCode == state->major_opcode) &&
+ (!state->minor_opcode ||
+ rep->error.minorCode == state->minor_opcode) &&
+ (!state->min_sequence_number ||
+ (state->min_sequence_number <= dpy->last_request_read)) &&
+ (!state->max_sequence_number ||
+ (state->max_sequence_number >= dpy->last_request_read))) {
+ state->last_error_received = rep->error.errorCode;
+ state->error_count++;
+ return True;
+ }
+ return False;
+}
+
+void _XDeqAsyncHandler(
+ Display *dpy,
+ register _XAsyncHandler *handler)
+{
+ register _XAsyncHandler **prev;
+ register _XAsyncHandler *async;
+
+ for (prev = &dpy->async_handlers;
+ (async = *prev) && (async != handler);
+ prev = &async->next)
+ ;
+ if (async)
+ *prev = async->next;
+}
+
+char *
+_XGetAsyncReply(
+ register Display *dpy,
+ register char *replbuf, /* data is read into this buffer */
+ register xReply *rep, /* value passed to calling handler */
+ char *buf, /* value passed to calling handler */
+ int len, /* value passed to calling handler */
+ int extra, /* extra words to read, ala _XReply */
+ Bool discard) /* discard after extra?, ala _XReply */
+{
+ if (extra == 0) {
+ if (discard && (rep->generic.length << 2) > len)
+ _XEatData (dpy, (rep->generic.length << 2) - len);
+ return (char *)rep;
+ }
+
+ if (extra <= rep->generic.length) {
+ int size = SIZEOF(xReply) + (extra << 2);
+ if (size > len) {
+ memcpy(replbuf, buf, len);
+ _XRead(dpy, replbuf + len, size - len);
+ buf = replbuf;
+ len = size;
+#ifdef MUSTCOPY
+ } else {
+ memcpy(replbuf, buf, size);
+ buf = replbuf;
+#endif
+ }
+
+ if (discard && rep->generic.length > extra &&
+ (rep->generic.length << 2) > len)
+ _XEatData (dpy, (rep->generic.length << 2) - len);
+
+ return buf;
+ }
+ /*
+ *if we get here, then extra > rep->generic.length--meaning we
+ * read a reply that's shorter than we expected. This is an
+ * error, but we still need to figure out how to handle it...
+ */
+ if ((rep->generic.length << 2) > len)
+ _XEatData (dpy, (rep->generic.length << 2) - len);
+ _XIOError (dpy);
+ return (char *)rep;
+}
+
+void
+_XGetAsyncData(
+ Display *dpy,
+ char *data, /* data is read into this buffer */
+ char *buf, /* value passed to calling handler */
+ int len, /* value passed to calling handler */
+ int skip, /* number of bytes already read in previous
+ _XGetAsyncReply or _XGetAsyncData calls */
+ int datalen, /* size of data buffer in bytes */
+ int discardtotal) /* min. bytes to consume (after skip) */
+{
+ buf += skip;
+ len -= skip;
+ if (!data) {
+ if (datalen > len)
+ _XEatData(dpy, datalen - len);
+ } else if (datalen <= len) {
+ memcpy(data, buf, datalen);
+ } else {
+ memcpy(data, buf, len);
+ _XRead(dpy, data + len, datalen - len);
+ }
+ if (discardtotal > len) {
+ if (datalen > len)
+ len = datalen;
+ _XEatData(dpy, discardtotal - len);
+ }
+}
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