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visual_studio/NativeClientVSAddIn/NaCl.Build.CPPTasks/GCCUtilities.cs

Index: visual_studio/NativeClientVSAddIn/NaCl.Build.CPPTasks/GCCUtilities.cs
diff --git a/visual_studio/NativeClientVSAddIn/NaCl.Build.CPPTasks/GCCUtilities.cs b/visual_studio/NativeClientVSAddIn/NaCl.Build.CPPTasks/GCCUtilities.cs
new file mode 100644
index 0000000000000000000000000000000000000000..2db604a1e24ff696a7e3d3802b430b38218ea64b
--- /dev/null
+++ b/visual_studio/NativeClientVSAddIn/NaCl.Build.CPPTasks/GCCUtilities.cs
@@ -0,0 +1,101 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+using System.IO;
+using System.Text.RegularExpressions;
+
+namespace NaCl.Build.CPPTasks
+{
+    class GCCUtilities
+    {
+        public const int s_CommandLineLength = 256;
+
+        public static string Convert_Path_Windows_To_Posix(string path)
+        {
+            return path.Replace('\\', '/');
+        }
+
+        public static string Convert_Path_Posix_To_Windows(string path)
+        {
+            path = path.Replace('/', '\\');
+            // also make double backslashes a single slash
+            // TODO: speed this up by iterating instead of two replaces
+            return path.Replace("\\\\", "\\");
+        }
+
+        // replace GCC error are warning output to Visual Studio format to support going to source code from error output.
+        public static string Convert_Output_GCC_to_VS(string line)
+        {
+            string result;
+            foreach (GCCRegexLineConverter converter in s_RegexConverters)
+            {
+                result = converter.Convert(line);
+                if (result.Length > 0)
+                {
+                    return result;
+                }
+            }
+
+            return line;
+        }
+
+        private class GCCRegexLineConverter
+        {
+            public Regex OutputExpression { get; set; }
+
+            //public string OutputIdentifier { get; set; }
+            public string FilenameIdentifier { get; set; }
+            public string RemainderIdentifier { get; set; }
+
+            // returns empty string if cannot convert.
+            public string Convert(string line)
+            {
+                //Regex expression = new Regex(OutputIdentifier);
+                if (OutputExpression.IsMatch(line))
+                {
+                    string filename = OutputExpression.Replace(line, FilenameIdentifier);
+
+                    // GetFullPath may throw an exception.
+                    try
+                    {
+                        string fullPath = Path.GetFullPath(filename);
+                        string remainder = OutputExpression.Replace(line, RemainderIdentifier);
+
+                        string newLine = fullPath + remainder;
+
+                        return newLine;
+                    }
+                    catch
+                    {
+                    }
+                }
+
+                return string.Empty;
+            }
+        } // GCCRegexLineConverter
+
+        private static readonly List<GCCRegexLineConverter> s_RegexConverters = new List<GCCRegexLineConverter> 
+        {
+            new GCCRegexLineConverter 
+            {
+                OutputExpression =      new Regex(@"^\s*(.?.?[^:]*.*?):([1-9]\d*):([1-9]\d*):(.*$)"),
+                FilenameIdentifier =    @"$1",
+                RemainderIdentifier =   @"($2,$3):$4"
+            },
+            new GCCRegexLineConverter 
+            {
+                OutputExpression =      new Regex(@"^\s*(.?.?[^:]*.*?):([1-9]\d*):(.*$)"),
+                FilenameIdentifier =    @"$1",
+                RemainderIdentifier =   @"($2):$3"
+            },
+            new GCCRegexLineConverter 
+            {
+                OutputExpression =      new Regex(@"^\s*(.?.?[^:]*.*?):(.?.?[^:]*.*?):([1-9]\d*):(.*$)"),
+                FilenameIdentifier =    @"$2",
+                RemainderIdentifier =   @"($3):'$1' $4"
+            }
+        };
+    } // GCCUtilities
+} // namespace