Add an 'exec'-prefix to snapshot name when saving from a script.

Allow the user to specify an additional 'prefix' string in the exec command
that will be prepended the ticks-part of the snapshot name when saving a
snapshot from script.

src/debugger/DebuggerParser.cxx

@@ -59,7 +59,8 @@ DebuggerParser::DebuggerParser(Debugger& d, Settings& s)
   : debugger(d),
     settings(s),
     argCount(0),
-    execDepth(0)
+    execDepth(0),
+    execPrefix("")
 {
 }
 
@@ -1063,11 +1064,19 @@ void DebuggerParser::executeExec()
   string file = argStrings[0];
   if(file.find_last_of('.') == string::npos)
     file += ".script";
-
   FilesystemNode node(file);
   if (!node.exists()) {
     node = FilesystemNode(debugger.myOSystem.defaultSaveDir() + file);
   }
+
+  if (argCount == 2) {
+    execPrefix = argStrings[1];
+  }
+  else {
+    ostringstream prefix;
+    prefix << std::hex << std::setw(8) << std::setfill('0') << (debugger.myOSystem.getTicks()/1000 & 0xffffffff);
+    execPrefix = prefix.str();
+  }
   execDepth++;
   commandResult << exec(node);
   execDepth--;
@@ -1711,7 +1720,7 @@ void DebuggerParser::executeSaveses()
 // "savesnap"
 void DebuggerParser::executeSavesnap()
 {
-  debugger.tiaOutput().saveSnapshot(execDepth);
+  debugger.tiaOutput().saveSnapshot(execDepth, execPrefix);
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -2389,11 +2398,11 @@ DebuggerParser::Command DebuggerParser::commands[kNumCommands] = {
 
   {
     "exec",
-    "Execute script file <xx>",
+    "Execute script file <xx> [prefix]",
     "Example: exec script.dat, exec auto.txt",
     true,
     true,
-    { kARG_FILE, kARG_END_ARGS },
+    { kARG_FILE, kARG_LABEL, kARG_MULTI_BYTE },
     std::mem_fn(&DebuggerParser::executeExec)
   },
 

src/debugger/DebuggerParser.hxx

@@ -124,6 +124,7 @@ class DebuggerParser
     uInt32 argCount;
 
     uInt32 execDepth;
+    string execPrefix;
 
     StringList myWatches;
 

src/debugger/gui/TiaOutputWidget.cxx

@@ -58,7 +58,7 @@ void TiaOutputWidget::loadConfig()
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-void TiaOutputWidget::saveSnapshot(int execDepth)
+void TiaOutputWidget::saveSnapshot(int execDepth, const string& execPrefix)
 {
   if (execDepth > 0) {
     drawWidget(false);
@@ -66,8 +66,12 @@ void TiaOutputWidget::saveSnapshot(int execDepth)
   int number = int(instance().getTicks() / 1000);
   ostringstream sspath;
   sspath << instance().snapshotSaveDir()
-         << instance().console().properties().get(Cartridge_Name)
-         << "_dbg_" << std::hex << std::setw(8) << std::setfill('0') << number << ".png";
+         << instance().console().properties().get(Cartridge_Name);
+  sspath << "_dbg_";
+  if (execDepth > 0 && !execPrefix.empty()) {
+    sspath << execPrefix << "_";
+  }
+  sspath << std::hex << std::setw(8) << std::setfill('0') << (number/1000 & 0xffffffff) << ".png";
 
   const uInt32 width  = instance().console().tia().width(),
                height = instance().console().tia().height();

src/debugger/gui/TiaOutputWidget.hxx

@@ -36,8 +36,8 @@ class TiaOutputWidget : public Widget, public CommandSender
     void loadConfig() override;
     void setZoomWidget(TiaZoomWidget* w) { myZoom = w; }
 
-    void saveSnapshot() { saveSnapshot(0); };
-    void saveSnapshot(int execDepth);
+    void saveSnapshot() { saveSnapshot(0, ""); };
+    void saveSnapshot(int execDepth, const string& execPrefix);
 
 // Eventually, these methods will enable access to the onscreen TIA image
 // For example, clicking an area may cause an action