support for id-based translations

unlike in an earlier attempt, ids are textual this time.

the developer is able to provide a template for the string. when lupdate
and lrelease are integrated into the build process, this makes it
possible to avoid a round-trip to a dedicated string designer during the
early development stage.

Requirement-id: QT-435

2 files changed, 44 insertions, 10 deletions

diff --git a/tools/linguist/shared/qm.cpp b/tools/linguist/shared/qm.cpp
index ec61cb6..05d8e12 100644
--- a/tools/linguist/shared/qm.cpp
+++ b/tools/linguist/shared/qm.cpp
@@ -173,6 +173,7 @@ public:
     bool save(QIODevice *iod);
 
     void insert(const TranslatorMessage &msg, bool forceComment);
+    void insertIdBased(const TranslatorMessage &message);
 
     void squeeze(TranslatorSaveMode mode);
 
@@ -436,6 +437,16 @@ void Releaser::insert(const TranslatorMessage &message, bool forceComment)
         insertInternal(message, forceComment, false);
 }
 
+void Releaser::insertIdBased(const TranslatorMessage &message)
+{
+    QStringList tlns = message.translations();
+    for (int i = 0; i < tlns.size(); ++i)
+        if (tlns.at(i).isEmpty())
+            tlns[i] = message.sourceText();
+    ByteTranslatorMessage bmsg("", originalBytes(message.id(), false), "", tlns);
+    m_messages.insert(bmsg, 0);
+}
+
 void Releaser::setNumerusRules(const QByteArray &rules)
 {
     m_numerusRules = rules;
@@ -689,11 +700,17 @@ static bool saveQM(const Translator &translator, QIODevice &dev, ConversionData
     int finished = 0;
     int unfinished = 0;
     int untranslated = 0;
+    int missingIds = 0;
+    int droppedData = 0;
 
     for (int i = 0; i != translator.messageCount(); ++i) {
         const TranslatorMessage &msg = translator.message(i);
         TranslatorMessage::Type typ = msg.type();
         if (typ != TranslatorMessage::Obsolete) {
+            if (cd.m_idBased && msg.id().isEmpty()) {
+                ++missingIds;
+                continue;
+            }
             if (typ == TranslatorMessage::Unfinished) {
                 if (msg.translation().isEmpty()) {
                     ++untranslated;
@@ -706,19 +723,34 @@ static bool saveQM(const Translator &translator, QIODevice &dev, ConversionData
             } else {
                 ++finished;
             }
-            // Drop the comment in (context, sourceText, comment),
-            // unless the context is empty,
-            // unless (context, sourceText, "") already exists or
-            // unless we already dropped the comment of (context,
-            // sourceText, comment0).
-            bool forceComment =
-                    msg.comment().isEmpty()
-                    || msg.context().isEmpty()
-                    || translator.contains(msg.context(), msg.sourceText(), QString());
-            releaser.insert(msg, forceComment);
+            if (cd.m_idBased) {
+                if (!msg.context().isEmpty() || !msg.comment().isEmpty())
+                    ++droppedData;
+                releaser.insertIdBased(msg);
+            } else {
+                // Drop the comment in (context, sourceText, comment),
+                // unless the context is empty,
+                // unless (context, sourceText, "") already exists or
+                // unless we already dropped the comment of (context,
+                // sourceText, comment0).
+                bool forceComment =
+                        msg.comment().isEmpty()
+                        || msg.context().isEmpty()
+                        || translator.contains(msg.context(), msg.sourceText(), QString());
+                releaser.insert(msg, forceComment);
+            }
         }
     }
 
+    if (missingIds)
+        cd.appendError(QCoreApplication::translate("LRelease",
+            "Dropped %n message(s) which had no ID.", 0,
+            QCoreApplication::CodecForTr, missingIds));
+    if (droppedData)
+        cd.appendError(QCoreApplication::translate("LRelease",
+            "Excess context/disambiguation dropped from %n message(s).", 0,
+            QCoreApplication::CodecForTr, droppedData));
+
     releaser.squeeze(cd.m_saveMode);
     bool saved = releaser.save(&dev);
     if (saved && cd.isVerbose()) {
diff --git a/tools/linguist/shared/translator.h b/tools/linguist/shared/translator.h
index ac824f3..fb17fd1 100644
--- a/tools/linguist/shared/translator.h
+++ b/tools/linguist/shared/translator.h
@@ -65,6 +65,7 @@ public:
         m_ignoreUnfinished(false),
         m_sortContexts(false),
         m_noUiLines(false),
+        m_idBased(false),
         m_saveMode(SaveEverything)
     {}
 
@@ -97,6 +98,7 @@ public:
     bool m_ignoreUnfinished;
     bool m_sortContexts;
     bool m_noUiLines;
+    bool m_idBased;
     TranslatorSaveMode m_saveMode;
 };