give external programs access to translateLine via %GDSEARCH% (#417)

* give external programs access to translateLine via %GDSEARCH%

* remove code smell

* reformat with clang-format

* update translations

* don't write to stdin of an external program if GDSEARCH is set

* update ui docs

globalbroadcaster.h

@@ -26,6 +26,7 @@ public:
   bool existedInWhitelist(QString host);
   static GlobalBroadcaster * instance();
   unsigned currentGroupId;
+  QString translateLineText{};
 
 signals:
   void dictionaryChanges( ActiveDictIds ad );

locale/ru_RU.ts

@@ -4738,8 +4738,8 @@ of the appropriate groups to use them.</source>
     </message>
     <message>
         <location filename="../sources.ui" line="409"/>
-        <source>Any external programs. A string %GDWORD% will be replaced with the query word. If such string is not presented, the word will be fed into standard input.</source>
+        <source>Any external programs. A string %GDWORD% will be replaced with the query word. A string %GDSEARCH% will be replaced with the text in the search bar. If both of the parameters are not provided, the headword will be fed into standard input.</source>
-        <translation>Любые внешние программы. Строка %GDWORD% будет заменена на запрашиваемое слово. Если такой строки нет, слово будет отправлено в стандартный входной поток.</translation>
+        <translation>Любые внешние программы. Строка %GDWORD% будет заменена на запрашиваемое слово. Строка %GDSEARCH% будет заменена на текст в поисковой строке. Если обоих строк нет задано, запрашиваемое слово будет отправлено в стандартный входной поток внешней программы.</translation>
     </message>
     <message>
         <location filename="../sources.ui" line="462"/>

mainwindow.cc

@@ -2342,6 +2342,8 @@ void MainWindow::translateInputChanged( QString const & newValue )
 {
   updateSuggestionList( newValue );
   translateBoxSuffix = QString();
+  // Save translate line text. Later it can be passed to external applications.
+  GlobalBroadcaster::instance()->translateLineText = newValue;
 }
 
 void MainWindow::updateSuggestionList()

programs.cc

@@ -9,6 +9,7 @@
 #include "parsecmdline.hh"
 #include "iconv.hh"
 #include "utils.hh"
+#include "globalbroadcaster.h"
 
 #include <QDir>
 #include <QFileInfo>
@@ -154,12 +155,17 @@ bool RunInstance::start( Config::Program const & prg, QString const & word,
     args.pop_front();
 
     bool writeToStdInput = true;
+    auto const & search_string = GlobalBroadcaster::instance()->translateLineText;
 
-    for( int x = 0; x < args.size(); ++x )
+    for( auto & arg : args ) {
-      if( args[ x ].indexOf( "%GDWORD%" ) >= 0 )
+      if( arg.indexOf( "%GDWORD%" ) >= 0 ) {
-      {
         writeToStdInput = false;
-        args[ x ].replace( "%GDWORD%", word );
+        arg.replace( "%GDWORD%", word );
+      }
+      if( arg.indexOf( "%GDSEARCH%" ) >= 0 ) {
+        writeToStdInput = false;
+        arg.replace( "%GDSEARCH%", search_string );
+      }
     }
 
     process.start( programName, args );

sources.ui

@@ -409,7 +409,7 @@ of the appropriate groups to use them.</string>
        <item>
         <widget class="QLabel" name="label_16">
          <property name="text">
-          <string>Any external programs. A string %GDWORD% will be replaced with the query word. If such string is not presented, the word will be fed into standard input.</string>
+          <string>Any external programs. A string %GDWORD% will be replaced with the query word. A string %GDSEARCH% will be replaced with the text in the search bar. If both of the parameters are not provided, the headword will be fed into standard input.</string>
          </property>
          <property name="wordWrap">
           <bool>true</bool>