1 files changed, 36 insertions, 0 deletions
diff --git a/Source/cmQtAutoGen.cxx b/Source/cmQtAutoGen.cxx
index 57fcd2da76..898d862221 100644
--- a/Source/cmQtAutoGen.cxx
+++ b/Source/cmQtAutoGen.cxx
@@ -384,3 +384,39 @@ bool cmQtAutoGen::RccLister::list(std::string const& qrcFile,
   }
   return true;
 }
+
+bool cmQtAutoGen::FileRead(std::string& content, std::string const& filename,
+                           std::string* error)
+{
+  content.clear();
+  if (!cmSystemTools::FileExists(filename, true)) {
+    if (error != nullptr) {
+      *error = "Not a file.";
+    }
+    return false;
+  }
+
+  unsigned long const length = cmSystemTools::FileLength(filename);
+  cmsys::ifstream ifs(filename.c_str(), (std::ios::in | std::ios::binary));
+
+  // Use lambda to save destructor calls of ifs
+  return [&ifs, length, &content, error]() -> bool {
+    if (!ifs) {
+      if (error != nullptr) {
+        *error = "Opening the file for reading failed.";
+      }
+      return false;
+    }
+    content.reserve(length);
+    using IsIt = std::istreambuf_iterator<char>;
+    content.assign(IsIt{ ifs }, IsIt{});
+    if (!ifs) {
+      content.clear();
+      if (error != nullptr) {
+        *error = "Reading from the file failed.";
+      }
+      return false;
+    }
+    return true;
+  }();
+}