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Write used references file only if different #90

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merged 1 commit into from
Mar 22, 2024
Merged

Write used references file only if different #90

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26 changes: 25 additions & 1 deletion src/Analyzer/ReferenceTrimmerAnalyzer.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -90,7 +90,7 @@ private static void DumpUsedReferences(CompilationAnalysisContext context)
}
}

File.WriteAllLines(Path.Combine(Path.GetDirectoryName(declaredReferencesPath), UsedReferencesFileName), usedReferences);
WriteUsedReferencesToFile(usedReferences, declaredReferencesPath);

Dictionary<string, List<string>> packageAssembliesDict = new(StringComparer.OrdinalIgnoreCase);
foreach (DeclaredReference declaredReference in declaredReferences.References)
Expand Down Expand Up @@ -141,6 +141,30 @@ private static void DumpUsedReferences(CompilationAnalysisContext context)
}
}

private static void WriteUsedReferencesToFile(HashSet<string> usedReferences, string declaredReferencesPath)
{
string filePath = Path.Combine(Path.GetDirectoryName(declaredReferencesPath), UsedReferencesFileName);

string text = string.Join(Environment.NewLine, usedReferences.OrderBy(s => s));

try
{
if (File.Exists(filePath))
{
string oldText = File.ReadAllText(filePath);
if (string.Equals(text, oldText, StringComparison.OrdinalIgnoreCase))
{
return;
}
}

File.WriteAllText(filePath, text);
}
catch
{
}
}

private static string? GetDeclaredReferencesPath(CompilationAnalysisContext context)
{
foreach (AdditionalText additionalText in context.Options.AdditionalFiles)
Expand Down
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