/*
+ * base code for various Tcl extensions
+ * Copyright 2006 Ian Jackson
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
*/
-#include "hbytes.h"
+#include "chiark-tcl-base.h"
-void scriptinv_init(ScriptToInvoke *si) {
- si->obj= 0;
+void cht_scriptinv_init(ScriptToInvoke *si) {
+ si->ipq= 0;
+ si->script= 0;
+ si->xargs= 0;
}
-void scriptinv_cancel(ScriptToInvoke *si) {
- if (si->obj) {
- Tcl_DecrRefCount(si->obj);
- si->obj= 0;
- }
+void cht_scriptinv_cancel(ScriptToInvoke *si) {
+ if (si->script) { Tcl_DecrRefCount(si->script); si->script= 0; }
+ if (si->xargs) { Tcl_DecrRefCount(si->xargs); si->xargs= 0; }
+ si->ipq= 0;
}
-int scriptinv_set(ScriptToInvoke *si, Tcl_Interp *ip,
+int cht_scriptinv_set(ScriptToInvoke *si, Tcl_Interp *ip,
Tcl_Obj *newscript, Tcl_Obj *xargs) {
int rc, xlength;
- scriptinv_cancel(si);
+ cht_scriptinv_cancel(si);
+ if (!newscript) return 0;
- rc= Tcl_ListObjLength(ip, newscript, &si->llength); if (rc) return rc;
+ rc= Tcl_ListObjLength(ip, newscript, &si->llen); if (rc) return rc;
Tcl_IncrRefCount(newscript);
if (xargs) {
rc= Tcl_ListObjLength(ip, xargs, &xlength); if (rc) return rc;
Tcl_IncrRefCount(xargs);
- si->llength += xlength;
+ assert(si->llen < INT_MAX/2 && xlength < INT_MAX/2);
+ si->llen += xlength;
}
- si->obj= newscript;
+ si->script= newscript;
si->xargs= xargs;
- si->ip= ip;
+ si->ipq= ip;
return 0;
}
-void scriptinv_invoke(ScriptToInvoke *si, int argc, Tcl_Obj **argv) {
+int cht_scriptinv_invoke_fg(ScriptToInvoke *si, int argc,
+ Tcl_Obj *const *argv) {
Tcl_Obj *invoke=0;
int i, rc;
- assert(si->obj);
+ if (!si->ipq) return TCL_OK;
for (i=0; i<argc; i++) Tcl_IncrRefCount(argv[i]);
- invoke= Tcl_DuplicateObj(si->obj);
+ invoke= Tcl_DuplicateObj(si->script);
Tcl_IncrRefCount(invoke);
if (si->xargs) {
- rc= Tcl_ListObjAppendList(si->ip, invoke, si->xargs);
+ rc= Tcl_ListObjAppendList(si->ipq, invoke, si->xargs);
if (rc) goto x_rc;
}
- rc= Tcl_ListObjReplace(si->ip, invoke,si->llength,0, argc,argv);
- for (i=0; i<argc; i++) { Tcl_DecrRefCount(argv[i]); argv[i]= 0; }
+ rc= Tcl_ListObjReplace(si->ipq, invoke,si->llen,0, argc,argv);
if (rc) goto x_rc;
- rc= Tcl_EvalObjEx(si->ip,invoke,TCL_EVAL_GLOBAL|TCL_EVAL_DIRECT);
+ rc= Tcl_EvalObjEx(si->ipq, invoke, TCL_EVAL_GLOBAL|TCL_EVAL_DIRECT);
if (rc) goto x_rc;
rc= 0;
x_rc:
+ for (i=0; i<argc; i++) Tcl_DecrRefCount(argv[i]);
if (invoke) Tcl_DecrRefCount(invoke);
- if (rc) Tcl_BackgroundError(si->ip);
+ return rc;
}
+
+void cht_scriptinv_invoke(ScriptToInvoke *si, int argc, Tcl_Obj *const *argv) {
+ int rc;
+ rc= cht_scriptinv_invoke_fg(si, argc, argv);
+ if (rc) Tcl_BackgroundError(si->ipq);
+}