// Veto changes before the current input line
void gdbModifyCB(Widget gdb_w, XtPointer, XtPointer call_data)
{
if (private_gdb_output)
return;
XmTextVerifyCallbackStruct *change =
(XmTextVerifyCallbackStruct *)call_data;
if (do_isearch(gdb_w, change))
return;
clear_isearch();
if (change->startPos < promptPosition)
{
// Attempt to change text before prompt
#if 0
// This only works in LessTif.
// With Motif, this causes a core dump on Solaris. - AZ
change->doit = false;
#else
// Make it a no-op
XmTextPosition lastPos = XmTextGetLastPosition(gdb_w);
XmTextPosition newPos = lastPos;
if (change->text->length == 0)
{
// Deletion
newPos = promptPosition;
if (change->event != 0)
XtCallActionProc(gdb_w, "beep", change->event, 0, 0);
}
else
{
// Some character
XtAppAddTimeOut(XtWidgetToApplicationContext(gdb_w), 0,
move_to_end_of_line, XtPointer(0));
}
change->startPos = change->endPos =
change->newInsert = change->currInsert = newPos;
#endif
return;
}
// Make sure newlines are always inserted at the end of the line
if (change->startPos == change->endPos &&
(change->startPos < promptPosition ||
(change->text->length == 1 && change->text->ptr[0] == '\n')))
{
// Add any text at end of text window
XmTextPosition lastPos = XmTextGetLastPosition(gdb_w);
change->newInsert = change->startPos = change->endPos = lastPos;
XtAppAddTimeOut(XtWidgetToApplicationContext(gdb_w), 0,
move_to_end_of_line, XtPointer(0));
}
}
int cmd_isearch(char **arg)
{
static const struct {
const char *name;
int (*func)(const char *term, char **arg,
struct isearch_query *q);
} term_handlers[] = {
{"opcode", isearch_opcode},
{"byte", isearch_bw},
{"word", isearch_bw},
{"aword", isearch_bw},
{"jump", isearch_type},
{"single", isearch_type},
{"double", isearch_type},
{"src", isearch_addr},
{"dst", isearch_addr},
{"srcreg", isearch_reg},
{"dstreg", isearch_reg},
{"srcmode", isearch_mode},
{"dstmode", isearch_mode}
};
struct isearch_query q;
const char *addr_text;
const char *len_text;
address_t addr;
address_t len;
addr_text = get_arg(arg);
len_text = get_arg(arg);
if (!(addr_text && len_text)) {
printc_err("isearch: address and length expected\n");
return -1;
}
if (expr_eval(addr_text, &addr) < 0 ||
expr_eval(len_text, &len) < 0)
return -1;
q.flags = 0;
for (;;) {
const char *term = get_arg(arg);
int i;
if (!term)
break;
for (i = 0; i < ARRAY_LEN(term_handlers); i++)
if (!strcasecmp(term_handlers[i].name, term)) {
if (term_handlers[i].func(term, arg, &q) < 0)
return -1;
break;
}
}
if (!q.flags) {
printc_err("isearch: no query terms given "
"(perhaps you mean \"dis\"?)\n");
return -1;
}
return do_isearch(addr, len, &q);
}
