diff options
Diffstat (limited to 'Bachelor/CCNA4/en_CCNA4_v30/elabs/Engine/actions_history.txt')
| -rw-r--r-- | Bachelor/CCNA4/en_CCNA4_v30/elabs/Engine/actions_history.txt | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/Bachelor/CCNA4/en_CCNA4_v30/elabs/Engine/actions_history.txt b/Bachelor/CCNA4/en_CCNA4_v30/elabs/Engine/actions_history.txt new file mode 100644 index 0000000..a3c0c9c --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/elabs/Engine/actions_history.txt @@ -0,0 +1,239 @@ +//zmg, 03.01.01
+//this file needs a better description!
+//
+//
+
+
+
+
+// ***** history_setHistory() *****
+//IN: rptr.INPUT = the input from the command line
+//DO: store the current input from the command line in the history buffer,
+// if the history buffer becomes full, the oldest command in the buffer is
+// tossed, and all of the other commands are "slid back" to make room
+// for the new one.
+//OUT: updated history buffer
+function history_setHistory() {
+
+ var r = eval("_root.r" + _root.active_router); //'r' is a "pointer" to the active router object
+ var vr = eval("_root.r" + _root.VISIBLE_ROUTER); //'r' is a "pointer" to the visible router object
+ var history; // a pointer to the history object
+
+ //this if-statement points the 'history' ptr to the correct
+ //history buffer to store the command history into
+ if ((r.MODE == "user") || (r.MODE == "enable")) {
+
+ //we are in either "user" or "enable" mode, so the 'history'
+ //ptr should point to the user mode's history buffer.
+//C history = r.userHistory;
+ history = _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].userHistory;
+ } else {
+
+ //we're in "config" mode, so the 'history' ptr should
+ //point to the config mode's history buffer.
+//C history = r.configHistory;
+ history = _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].configHistory;
+ }
+
+
+
+ //if the last entry in the history buffer is different than what
+ //was just entered on the command line, this if-statement will
+ //execute to save this command in the history buffer
+ if (history[history.length-1] != vr.INPUT) {
+
+ //store this most recent command from the command line in
+ //the last position of the history buffer (array)
+ history[history.length] = vr.INPUT;
+
+ //if the buffer is over the declared length, remove the
+ //oldest command in the buffer and "shift" every command
+ //up one slot in the history buffer.
+ if (history.length > _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].historyBufferLength) {
+ history.shift();
+ }
+ }
+
+ //update the current length counter of the history buffer
+ //in the router object
+ if ((r.MODE == "user") || (r.MODE == "enable"))
+ {
+ //r.userHistIndex = history.length;
+ _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].userHistIndex = history.length;
+ }
+ else
+ {
+ //r.configHistIndex = history.length;
+ _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].configHistIndex = history.length;
+ }
+
+}
+
+
+
+
+
+// ***** history_historyBackward() *****
+//IN: <none>
+//DO: print the previous input command from the history buffer to the
+// current command line--called when the user is scrolling "backward"
+// through the history of commands.
+//OUT: console is updated to show the previous command in the history
+function history_historyBackward() {
+
+
+ // pointer to the active router object
+ var r = eval("_root.r" + _root.active_router);
+
+ // pointer to the visible router object
+ var vr = eval("_root.r" + _root.VISIBLE_ROUTER);
+
+ var history; //"pointer" to the history object
+ var histIndex; //tmp.var, index into the history object
+
+ //this if-statement points the 'history' ptr to the correct
+ //history buffer to read the command history from
+ if ((r.MODE == "user") || (r.MODE == "enable")) {
+
+ //we are in either "user" or "enable" mode, so the 'history'
+ //ptr should point to the user mode's history buffer.
+ history = _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].userHistory;
+
+ //point 'histIndex' to the current element
+ //in the history buffer
+ histIndex = _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].userHistIndex;
+
+ } else {
+
+ //we're in "config" mode, so the 'history' ptr should
+ //point to the config mode's history buffer.
+ history = _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].configHistory;
+
+ //point 'histIndex' to the current element
+ //in the history buffer
+ histIndex = _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].configHistIndex;
+ }
+
+
+
+ //this if-statement executes if there are commands left
+ //in the history buffer (before the current one) to display.
+ //if not, then this function simply returns.
+ if (histIndex > 0) {
+
+ //"back up" the current history buffer ptr to the previous command
+ histIndex--;
+
+ //"back up" the current history buffer index to the previous
+ //command in the appropriate router area as well.
+ if ((r.MODE == "user") || (r.MODE == "enable")) {
+ _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].userHistIndex--;
+ } else {
+ _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].configHistIndex--;
+ }
+
+ //replace the last line w/a prompt: remove all characters
+ //displayed on the last line, except for the prompt, and leave
+ //the cursor right after the prompt
+ r.line[r.lastLine] = r.line[r.lastLine].substring(0,r.PROMPT.length);
+
+ //fill the current router's input buffer (rptr.INPUT) with
+ //the previous command from the history buffer...
+ vr.INPUT = history[histIndex];
+
+ //...and print it to the Hyperterminal console.
+ r.lineIndexCounter = r.INPUT.length;
+ output_write(vr.INPUT);
+
+ }
+}
+
+
+
+
+
+// ***** history_historyForward() *****
+//IN: <none>
+//DO: print the next input command from the history buffer to the
+// current command line--called when the user is scrolling "forward"
+// through the history of commands.
+//OUT: console is updated to show the next command in the history
+function history_historyForward() {
+
+
+ var r = eval("_root.r" + _root.active_router); //'rptr' is a "pointer" to the active router object
+ var vr = eval("_root.r" + _root.VISIBLE_ROUTER); //'rptr' is a "pointer" to the visible router object
+ var history; //"pointer" to the history object
+ var histIndex; //tmp.var, index into the history object
+
+ //this if-statement points the 'history' ptr to the correct
+ //history buffer to read the command history from
+ if ((r.MODE == "user") || (r.MODE == "enable")) {
+
+
+ //we are in either "user" or "enable" mode, so the 'history'
+ //ptr should point to the user mode's history buffer.
+ history = _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].userHistory;
+
+ //point 'histIndex' to the current element
+ //in the history buffer
+ histIndex = _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].userHistIndex;
+
+ } else {
+
+ //we're in "config" mode, so the 'history' ptr should
+ //point to the config mode's history buffer.
+ history = _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].configHistory;
+
+ //point 'histIndex' to the current element
+ //in the history buffer
+ histIndex = _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].configHistIndex;
+ }
+
+
+
+ //this if-statement executes if there are commands left
+ //in the history buffer (after the current one) to display.
+ //if not, then this function simply returns.
+ if (histIndex < history.length) {
+
+
+ //"advance" the current history buffer ptr to the previous command
+ histIndex++;
+
+ //"back up" the current history buffer index to the previous
+ //command in the appropriate router area as well.
+ if ((r.MODE == "user") || (r.MODE == "enable")) {
+ _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].userHistIndex++;
+ } else {
+ _root.devCmdHist[routerUsedForThisStep[_root.stepnum]].configHistIndex++;
+ }
+
+ //replace the last line w/a prompt: remove all characters
+ //displayed on the last line, except for the prompt, and leave
+ //the cursor right after the prompt
+ r.line[r.lastLine] = r.line[r.lastLine].substring(0,r.PROMPT.length);
+
+ if (histIndex != history.length) {
+
+ //there are more commands following this one in the
+ //history buffer, so fill the current router's input
+ //buffer (rptr.INPUT) with the next command from the
+ //history buffer...
+ vr.INPUT = history[histIndex];
+
+ } else {
+
+ //there are no more commands, print nothing to
+ //the command line
+ vr.INPUT = "";
+ }
+
+
+ //...print the router object command line input buffer
+ //(set by the if-statement above) to the Hyperterminal
+ //console...
+ r.lineIndexCounter = vr.INPUT.length;
+ output_write(vr.INPUT);
+ }
+}
\ No newline at end of file |