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+/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
+ file Copyright.txt or https://cmake.org/licensing for details. */
+#ifndef cmUVProcessChain_h
+#define cmUVProcessChain_h
+
+#include <array>
+#include <cstddef>
+#include <cstdint>
+#include <iosfwd>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "cm_uv.h"
+
+class cmUVProcessChain;
+
+class cmUVProcessChainBuilder
+{
+public:
+ enum Stream
+ {
+ Stream_INPUT = 0,
+ Stream_OUTPUT = 1,
+ Stream_ERROR = 2,
+ };
+
+ cmUVProcessChainBuilder();
+
+ cmUVProcessChainBuilder& AddCommand(
+ const std::vector<std::string>& arguments);
+ cmUVProcessChainBuilder& SetNoStream(Stream stdio);
+ cmUVProcessChainBuilder& SetBuiltinStream(Stream stdio);
+ cmUVProcessChainBuilder& SetExternalStream(Stream stdio, int fd);
+
+ cmUVProcessChain Start() const;
+
+private:
+ enum StdioType
+ {
+ None,
+ Builtin,
+ External,
+ };
+
+ friend class cmUVProcessChain;
+
+ struct StdioConfiguration
+ {
+ StdioType Type;
+ int FileDescriptor;
+ };
+
+ struct ProcessConfiguration
+ {
+ std::vector<std::string> Arguments;
+ };
+
+ std::array<StdioConfiguration, 3> Stdio;
+ std::vector<ProcessConfiguration> Processes;
+};
+
+class cmUVProcessChain
+{
+public:
+ struct Status
+ {
+ int64_t ExitStatus;
+ int TermSignal;
+ };
+
+ cmUVProcessChain(const cmUVProcessChain& other) = delete;
+ cmUVProcessChain(cmUVProcessChain&& other) noexcept;
+
+ ~cmUVProcessChain();
+
+ cmUVProcessChain& operator=(const cmUVProcessChain& other) = delete;
+ cmUVProcessChain& operator=(cmUVProcessChain&& other) noexcept;
+
+ uv_loop_t& GetLoop();
+
+ // FIXME: Add stdin support
+ std::istream* OutputStream();
+ std::istream* ErrorStream();
+
+ bool Valid() const;
+ bool Wait(int64_t milliseconds = -1);
+ std::vector<const Status*> GetStatus() const;
+ const Status* GetStatus(std::size_t index) const;
+
+private:
+ friend class cmUVProcessChainBuilder;
+
+ cmUVProcessChain();
+
+ struct InternalData;
+ std::unique_ptr<InternalData> Data;
+};
+
+#endif