Add NEWLINE_STYLE option to configure_file (#3957)

1 files changed, 95 insertions, 0 deletions

diff --git a/Source/cmNewLineStyle.cxx b/Source/cmNewLineStyle.cxx
new file mode 100644
index 0000000..6f7b6a9
--- /dev/null
+++ b/Source/cmNewLineStyle.cxx
@@ -0,0 +1,95 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2011 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#include "cmNewLineStyle.h"
+
+
+
+cmNewLineStyle::cmNewLineStyle() : NewLineStyle(Invalid)
+{
+}
+
+
+bool cmNewLineStyle::IsValid() const
+{
+  return NewLineStyle != Invalid;
+}
+
+
+bool cmNewLineStyle::ReadFromArguments(const std::vector<std::string>& args,
+                                       std::string& errorString)
+{
+  NewLineStyle = Invalid;
+
+  for (size_t i = 0; i< args.size(); i++)
+    {
+    if (args[i] == "NEWLINE_STYLE")
+      {
+      size_t const styleIndex = i + 1;
+      if (args.size() > styleIndex)
+        {
+        const std::string eol = args[styleIndex];
+        if (eol == "LF" || eol == "UNIX")
+          {
+          NewLineStyle = LF;
+          return true;
+          }
+        else if (eol == "CRLF" || eol == "WIN32" || eol == "DOS")
+          {
+          NewLineStyle = CRLF;
+          return true;
+          }
+        else
+          {
+          errorString = "NEWLINE_STYLE sets an unknown style, only LF, "
+                        "CRLF, UNIX, DOS, and WIN32 are supported";
+          return false;
+          }
+        }
+      else
+        {
+        errorString = "NEWLINE_STYLE must set a style: "
+                      "LF, CRLF, UNIX, DOS, or WIN32";
+        return false;
+        }
+      }
+    }
+  return true;
+}
+
+
+const std::string cmNewLineStyle::GetCharacters() const
+{
+  switch (NewLineStyle)
+    {
+    case Invalid:
+      return "";
+    case LF:
+      return "\n";
+    case CRLF:
+      return "\r\n";
+    default:
+      ;
+    };
+  return "";
+}
+
+
+void cmNewLineStyle::SetStyle(Style style)
+{
+  NewLineStyle = style;
+}
+
+
+cmNewLineStyle::Style cmNewLineStyle::GetStyle() const
+{
+  return NewLineStyle;
+}