libcore|FS: Utility method for adding new package dependencies

Modifying the metadata of unloaded packages is part of the responsibilities of the Package class.
skyjake · Jun 4, 2016 · b6dd7a4 · b6dd7a4
1 parent 9527e90
commit b6dd7a4
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diff --git a/doomsday/sdk/libcore/include/de/filesys/package.h b/doomsday/sdk/libcore/include/de/filesys/package.h
@@ -172,6 +172,8 @@ class DENG2_PUBLIC Package : public IObject
 
     static StringList requires(File const &packageFile);
 
+    static void addRequiredPackage(File &packageFile, String const &id);
+
     /**
      * Splits a string containing a package identifier and version. The
      * expected format of the string is `{packageId}_{version}`.

diff --git a/doomsday/sdk/libcore/src/filesys/package.cpp b/doomsday/sdk/libcore/src/filesys/package.cpp
@@ -351,6 +351,20 @@ StringList Package::requires(File const &packageFile)
     return ids;
 }
 
+void Package::addRequiredPackage(File &packageFile, String const &id)
+{
+    Record &names = packageFile.objectNamespace();
+
+    if (!names.has(PACKAGE_REQUIRES))
+    {
+        names.addArray(PACKAGE_REQUIRES, new ArrayValue({ new TextValue(id) }));
+    }
+    else
+    {
+        names[PACKAGE_REQUIRES].value<ArrayValue>().add(new TextValue(id));
+    }
+}
+
 static String stripAfterFirstUnderscore(String str)
 {
     int pos = str.indexOf('_');