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@ -25,7 +25,7 @@ using Microsoft.Build.Utilities; |
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namespace Grpc.Tools { |
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namespace Grpc.Tools { |
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internal static class DepFileUtil { |
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internal static class DepFileUtil { |
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/* |
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/* |
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Sample dependency files. Notable features we have to deal with: |
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Sample dependency files. Notable features we have to deal with: |
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* Slash doubling, must normalize them. |
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* Slash doubling, must normalize them. |
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* Spaces in file names. Cannot just "unwrap" the line on backslash at eof; |
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* Spaces in file names. Cannot just "unwrap" the line on backslash at eof; |
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@ -33,21 +33,30 @@ namespace Grpc.Tools { |
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the ':' separator, as containing exactly two. |
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the ':' separator, as containing exactly two. |
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* Deal with ':' also being drive letter separator (second example). |
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* Deal with ':' also being drive letter separator (second example). |
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obj\Release\net45\/Foo.cs \
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obj\Release\net45\/Foo.cs \
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obj\Release\net45\/FooGrpc.cs: C:/foo/include/google/protobuf/wrappers.proto\
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obj\Release\net45\/FooGrpc.cs: C:/foo/include/google/protobuf/wrappers.proto\
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C:/projects/foo/src//foo.proto |
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C:/projects/foo/src//foo.proto |
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C:\projects\foo\src\./foo.grpc.pb.cc \
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C:\projects\foo\src\./foo.grpc.pb.cc \
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C:\projects\foo\src\./foo.grpc.pb.h \
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C:\projects\foo\src\./foo.grpc.pb.h \
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C:\projects\foo\src\./foo.pb.cc \
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C:\projects\foo\src\./foo.pb.cc \
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C:\projects\foo\src\./foo.pb.h: C:/foo/include/google/protobuf/wrappers.proto\
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C:\projects\foo\src\./foo.pb.h: C:/foo/include/google/protobuf/wrappers.proto\
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C:/foo/include/google/protobuf/any.proto\
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C:/foo/include/google/protobuf/any.proto\
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C:/foo/include/google/protobuf/source_context.proto\
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C:/foo/include/google/protobuf/source_context.proto\
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C:/foo/include/google/protobuf/type.proto\
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C:/foo/include/google/protobuf/type.proto\
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foo.proto |
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foo.proto |
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*/ |
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*/ |
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// Read file names from the dependency file to the right of ':'. |
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/// <summary> |
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/// Read file names from the dependency file to the right of ':' |
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/// </summary> |
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/// <param name="protoDepDir">Relative path to the dependency cache, e. g. "out"</param> |
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/// <param name="proto">Relative path to the proto item, e. g. "foo/file.proto"</param> |
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/// <param name="log">A <see cref="TaskLoggingHelper"/> for logging</param> |
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/// <returns> |
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/// Array of the proto file <b>input</b> dependencies as written by protoc, or empty |
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/// array if the dependency file does not exist or cannot be parsed. |
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/// </returns> |
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public static string[] ReadDependencyInputs(string protoDepDir, string proto, |
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public static string[] ReadDependencyInputs(string protoDepDir, string proto, |
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TaskLoggingHelper log) { |
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TaskLoggingHelper log) { |
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string depFilename = GetDepFilenameForProto(protoDepDir, proto); |
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string depFilename = GetDepFilenameForProto(protoDepDir, proto); |
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@ -80,7 +89,20 @@ C:\projects\foo\src\./foo.pb.h: C:/foo/include/google/protobuf/wrappers.proto\ |
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return result.ToArray(); |
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return result.ToArray(); |
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} |
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} |
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// Read file names from the dependency file to the left of ':'. |
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/// <summary> |
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/// Read file names from the dependency file to the left of ':' |
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/// </summary> |
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/// <param name="depFilename">Path to dependency file written by protoc</param> |
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/// <param name="log">A <see cref="TaskLoggingHelper"/> for logging</param> |
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/// <returns> |
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/// Array of the protoc-generated outputs from the given dependency file |
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/// written by protoc, or empty array if the file does not exist or cannot |
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/// be parsed. |
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/// </returns> |
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/// <remarks> |
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/// Since this is called after a protoc invocation, an unparsable or missing |
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/// file causes an error-level message to be logged. |
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/// </remarks> |
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public static string[] ReadDependencyOutputs(string depFilename, |
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public static string[] ReadDependencyOutputs(string depFilename, |
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TaskLoggingHelper log) { |
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TaskLoggingHelper log) { |
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string[] lines = ReadDepFileLines(depFilename, true, log); |
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string[] lines = ReadDepFileLines(depFilename, true, log); |
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@ -106,10 +128,31 @@ C:\projects\foo\src\./foo.pb.h: C:/foo/include/google/protobuf/wrappers.proto\ |
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return result.ToArray(); |
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return result.ToArray(); |
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} |
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} |
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// Get complete dependency file name from directory hash and file name, |
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/// <summary> |
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// tucked onto protoDepDir, e. g. |
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/// Construct relative dependency file name from directory hash and file name |
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// ("out", "foo/file.proto") => "out/deadbeef12345678_file.protodep". |
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/// </summary> |
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// This way, the filenames are unique but still possible to make sense of. |
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/// <param name="protoDepDir">Relative path to the dependency cache, e. g. "out"</param> |
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/// <param name="proto">Relative path to the proto item, e. g. "foo/file.proto"</param> |
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/// <returns> |
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/// Full relative path to the dependency file, e. g. |
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/// "out/deadbeef12345678_file.protodep" |
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/// </returns> |
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/// <remarks> |
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/// Since a project may contain proto files with the same filename but in different |
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/// directories, a unique filename for the dependency file is constructed based on the |
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/// proto file name both name and directory. The directory path can be arbitrary, |
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/// for example, it can be outside of the project, or an absolute path including |
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/// a drive letter, or a UNC network path. A name constructed from such a path by, |
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/// for example, replacing disallowed name characters with an underscore, may well |
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/// be over filesystem's allowed path length, since it will be located under the |
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/// project and solution directories, which are also some level deep from the root. |
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/// Instead of creating long and unwieldy names for these proto sources, we cache |
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/// the full path of the name without the filename, and append the filename to it, |
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/// as in e. g. "foo/file.proto" will yield the name "deadbeef12345678_file", where |
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/// "deadbeef12345678" is a presumed hash value of the string "foo/". This allows |
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/// the file names be short, unique (up to a hash collision), and still allowing |
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/// the user to guess their provenance. |
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/// </remarks> |
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public static string GetDepFilenameForProto(string protoDepDir, string proto) { |
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public static string GetDepFilenameForProto(string protoDepDir, string proto) { |
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string dirname = Path.GetDirectoryName(proto); |
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string dirname = Path.GetDirectoryName(proto); |
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if (Platform.IsFsCaseInsensitive) { |
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if (Platform.IsFsCaseInsensitive) { |
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@ -177,7 +220,7 @@ C:\projects\foo\src\./foo.pb.h: C:/foo/include/google/protobuf/wrappers.proto\ |
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// Read entire dependency file. The 'required' parameter controls error |
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// Read entire dependency file. The 'required' parameter controls error |
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// logging behavior in case the file not found. We require this file when |
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// logging behavior in case the file not found. We require this file when |
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// compiling, but reading it is optional when computing depnedencies. |
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// compiling, but reading it is optional when computing dependencies. |
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static string[] ReadDepFileLines(string filename, bool required, |
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static string[] ReadDepFileLines(string filename, bool required, |
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TaskLoggingHelper log) { |
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TaskLoggingHelper log) { |
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try { |
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try { |
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@ -189,7 +232,7 @@ C:\projects\foo\src\./foo.pb.h: C:/foo/include/google/protobuf/wrappers.proto\ |
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if (required) { |
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if (required) { |
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log.LogError($"Unable to load {filename}: {ex.GetType().Name}: {ex.Message}"); |
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log.LogError($"Unable to load {filename}: {ex.GetType().Name}: {ex.Message}"); |
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} else { |
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} else { |
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log.LogMessage(MessageImportance.Low, $"Skippping {filename}: {ex.Message}"); |
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log.LogMessage(MessageImportance.Low, $"Skipping {filename}: {ex.Message}"); |
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} |
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} |
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return new string[0]; |
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return new string[0]; |
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} |
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} |
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kkm
7 years ago