Autogen: Add and use cmQtAutoGenInitializer::InfoWriter class

The new ``cmQtAutoGenInitializer::InfoWriter`` class provides an
interface to write strings/vectors/sets/maps in CMake format
into a file.  Its use replaces various `cmJoin` calls that
failed to address escaping of semicolons in list elements.

Closes #18554

1 files changed, 41 insertions, 6 deletions

diff --git a/Source/cmQtAutoGenInitializer.h b/Source/cmQtAutoGenInitializer.h
index 53ad571..903ec85 100644
--- a/Source/cmQtAutoGenInitializer.h
+++ b/Source/cmQtAutoGenInitializer.h
@@ -4,9 +4,11 @@
 #define cmQtAutoGenInitializer_h
 
 #include "cmConfigure.h" // IWYU pragma: keep
+#include "cmGeneratedFileStream.h"
 #include "cmQtAutoGen.h"
 
 #include <map>
+#include <ostream>
 #include <set>
 #include <string>
 #include <vector>
@@ -44,6 +46,39 @@ public:
     std::vector<std::string> Resources;
   };
 
+  /// @brief Writes a CMake info file
+  class InfoWriter
+  {
+  public:
+    /// @brief Open the given file
+    InfoWriter(std::string const& filename);
+
+    /// @return True if the file is open
+    operator bool() const { return static_cast<bool>(Ofs_); }
+
+    void Write(const char* text) { Ofs_ << text; }
+    void Write(const char* key, std::string const& value);
+    void WriteUInt(const char* key, unsigned int value);
+
+    template <class C>
+    void WriteStrings(const char* key, C const& container);
+    void WriteConfig(const char* key,
+                     std::map<std::string, std::string> const& map);
+    template <class C>
+    void WriteConfigStrings(const char* key,
+                            std::map<std::string, C> const& map);
+    void WriteNestedLists(const char* key,
+                          std::vector<std::vector<std::string>> const& lists);
+
+  private:
+    template <class IT>
+    static std::string ListJoin(IT it_begin, IT it_end);
+    static std::string ConfigKey(const char* key, std::string const& config);
+
+  private:
+    cmGeneratedFileStream Ofs_;
+  };
+
 public:
   static IntegerVersion GetQtVersion(cmGeneratorTarget const* target);
 
@@ -129,10 +164,10 @@ private:
     std::string Executable;
     std::string PredefsCmd;
     std::set<std::string> Skip;
-    std::string Includes;
-    std::map<std::string, std::string> ConfigIncludes;
-    std::string Defines;
-    std::map<std::string, std::string> ConfigDefines;
+    std::vector<std::string> Includes;
+    std::map<std::string, std::vector<std::string>> ConfigIncludes;
+    std::set<std::string> Defines;
+    std::map<std::string, std::set<std::string>> ConfigDefines;
     std::string MocsCompilation;
   } Moc;
 
@@ -143,8 +178,8 @@ private:
     std::string Executable;
     std::set<std::string> Skip;
     std::vector<std::string> SearchPaths;
-    std::string Options;
-    std::map<std::string, std::string> ConfigOptions;
+    std::vector<std::string> Options;
+    std::map<std::string, std::vector<std::string>> ConfigOptions;
     std::vector<std::string> FileFiles;
     std::vector<std::vector<std::string>> FileOptions;
   } Uic;