private static FilenameAndHashValues GenerateFileHashes(PromotionGroupDetails promotionGroupDetails, string filenameListEntry)
{
string promotionGroupFilePath = Path.Combine(promotionGroupDetails.PromotionGroupSharePath, filenameListEntry);
string repositoryFilePath = Path.Combine(promotionGroupDetails.GitRepoSharePath, filenameListEntry);
return(new FilenameAndHashValues(filenameListEntry,
new NonEolHash(promotionGroupFilePath).Generate(),
new NonEolHash(repositoryFilePath).Generate()));
}
static int Main(string[] args)
{
int error = 1;
if (args.Length < 2)
{
Console.WriteLine();
Console.WriteLine("Usage: AnalyseDifferences PromotionGroup InputFilename {InputFilename...}");
}
else
{
// At least two program arguments
string selectedPromotionGroup = args[0];
if (!_PromotionGroupDetailsSortedDictionary.Keys.Contains(selectedPromotionGroup))
{
Console.WriteLine();
Console.WriteLine("Promotion Group \"{0}\" does not exist", selectedPromotionGroup);
}
else
{
// Selected Promotion Group exists
Console.WriteLine();
Console.WriteLine("Selected Promotion Group is {0}", selectedPromotionGroup);
Console.WriteLine();
PromotionGroupDetails selectedPromotionGroupDetails = _PromotionGroupDetailsSortedDictionary[selectedPromotionGroup];
// Assume overall success unless otherwise determined
error = 0;
// Start after the Promotion Group specification
for (int argId = 1; argId < args.Length; ++argId)
{
string inputFilename = args[argId];
inputFilename = Path.GetFullPath(inputFilename);
if (!File.Exists(inputFilename))
{
Console.WriteLine();
Console.WriteLine("File \"{0}\" does not exist", inputFilename);
}
else
{
// Input file exists
// Assume success for this Promotion Group and change the error if it isn't
int fileDifferenceCount = 0;
using (StreamReader fileInput = new StreamReader(inputFilename))
{
string line = null;
int lineNumber = 0;
bool linesProcessed = false;
bool finished = false;
while ((!finished) && (line = fileInput.ReadLine()) != null)
{
string listEntry = line;
lineNumber += 1;
// Trim all white space (tabs and spaces)
listEntry = listEntry.Trim();
// Skip lines beginning with a hash character
if (listEntry.Length == 0)
{
if (linesProcessed)
{
// Encountering an empty line after having processed non-blank filenames means the task is complete
finished = true;
}
}
else if (listEntry[0] != '#')
{
// Valid list entry and List Entry is not commented out
// Tidy up the entry and convert to a Windows suitable format
listEntry = listEntry.Replace("/", "\\");
// No leading or trailing backslashes
listEntry = listEntry.Trim(new char[] { '\\' });
// Input line is of the format "{whitespace}gitstatus:{whitespace}filename
// Locate the filename which must follow a colon
int posColon = listEntry.IndexOf(':');
if (posColon < 0)
{
if (linesProcessed)
{
// Lines have been previously processed so unexpectedly a filename has not been specified
Console.WriteLine();
Console.WriteLine("\"{0}\"({1}) : Expected a file specification but none was present",
inputFilename, lineNumber);
Console.WriteLine();
}
}
else
{
// A file specification appears to be present
// Guard against trailing colons at the end of the line
if ((posColon + 1) < listEntry.Length)
{
// A filename really does appear to be present
linesProcessed = true;
// Parse out the "git status" action
string[] listEntryItem = listEntry.Split(new char[] { ' ', ':' }, StringSplitOptions.RemoveEmptyEntries);
string gitStatusAction = listEntryItem[0];
// Parse out the filename allowing for filenames with spaces and remove leading and trailing whitespace
string gitRepoFilename = listEntry.Substring(posColon + 1).Trim();
// Only compare if there is a file to compare
if (String.Compare(gitStatusAction, "deleted", true /* ignore case */) == 0)
{
Console.WriteLine("Promotion Group file \"{0}\" has been deleted relative to the Git Repository", gitRepoFilename);
// The Promotion Group Directory and the Repository Working Directory should contain the same files
fileDifferenceCount += 1;
}
else
{
// Compare the files in each Promotion Group Volume and the corresponding Git Repository Working Directory
string sourceName = Path.Combine(selectedPromotionGroupDetails.PromotionGroupSharePath, gitRepoFilename);
if (File.Exists(sourceName))
{
// Use a hash to attempt to decide whether the file contents are actually different
FilenameAndHashValues filenameAndHashValues = GenerateFileHashes(selectedPromotionGroupDetails, gitRepoFilename);
if (filenameAndHashValues.PromotionGroupFileHash != filenameAndHashValues.RepositoryFileHash)
{
// The file hashes are different
// However, if the files are Solutions perhaps they are actually semantically equivalent
bool thisFileIsTheSame = false;
FileInfo fileInfo = new FileInfo(sourceName);
if (String.Compare(fileInfo.Extension, ".sln", true /*ignore case*/) == 0)
{
bool exactlyEquivalent = false;
bool semanticallyEquivalent = false;
AnalyseDifferences.CompareSolutions.Compare(gitRepoFilename,
selectedPromotionGroupDetails.GitRepoSharePath,
selectedPromotionGroupDetails.PromotionGroupSharePath,
ref exactlyEquivalent,
ref semanticallyEquivalent);
// It is sufficient that the Solutions "mean" the same thing rather than "be" exactly the same
thisFileIsTheSame = semanticallyEquivalent;
Console.WriteLine("Solution comparison for \"{0}\" indicates semantic {1}",
gitRepoFilename,
(thisFileIsTheSame ? "equivalence" : "difference"));
}
if (!thisFileIsTheSame)
{
fileDifferenceCount += 1;
Console.WriteLine("Files for \"{0}\" appear to be different", filenameAndHashValues.Filename);
}
} // The file hashes are different
else
{
//Console.WriteLine("Files for \"{0}\" appear to be the same. Hash = {1}",
// filenameAndHashValues.Filename, filenameAndHashValues.PromotionGroupFileHash);
}
}
else
{
Console.WriteLine("Promotion Group file \"{0}\" has been deleted relative to the Git Repository", gitRepoFilename);
// The Promotion Group Directory and the Repository Working Directory should contain the same files
fileDifferenceCount += 1;
}
} // Compare the files in each Promotion Group Volume and the corresponding Git Repository Working Directory
} // A filename really does appear to be present
} // A file specification appears to be present
} // Valid list entry and List Entry is not commented out
} // while not end-of-file
} // using StreamReader
if (fileDifferenceCount == 0)
{
Console.WriteLine();
Console.WriteLine("No differences were detected between the Promotion Group Volume \"{0}\" and the corresponding Git Repository \"{1}\"",
selectedPromotionGroupDetails.PromotionGroupSharePath, selectedPromotionGroupDetails.GitRepoSharePath);
}
else
{
Console.WriteLine();
Console.WriteLine("Number of differences detected between the Promotion Group Volume \"{0}\" and the corresponding Git Repository \"{1}\" was {2}",
selectedPromotionGroupDetails.PromotionGroupSharePath, selectedPromotionGroupDetails.GitRepoSharePath, fileDifferenceCount);
error = 1;
}
} // Selected Promotion Group exists
} // for argId
} // Input file exists
} // At least two program arguments
return(error);
}