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add first version of rgr sandwich (vercel#3306)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| #include <stdarg.h> | ||
| #include <stdbool.h> | ||
| #include <stdint.h> | ||
| #include <stdlib.h> | ||
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| typedef struct Buffer { | ||
| uint32_t len; | ||
| uint8_t *data; | ||
| } Buffer; | ||
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| struct Buffer get_turbo_data_dir(void); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| package ffi | ||
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| // #include "bindings.h" | ||
| // | ||
| // #cgo LDFLAGS: -L${SRCDIR} -lturborepo_ffi | ||
| // #cgo windows LDFLAGS: -lole32 -lbcrypt -lws2_32 -luserenv | ||
| import "C" | ||
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| import ( | ||
| "reflect" | ||
| "unsafe" | ||
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| ffi_proto "github.com/vercel/turbo/cli/internal/ffi/proto" | ||
| "google.golang.org/protobuf/proto" | ||
| ) | ||
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| // Unmarshal consumes a buffer and parses it into a proto.Message | ||
| func Unmarshal[M proto.Message](b C.Buffer, c M) error { | ||
| bytes := toBytes(b) | ||
| if err := proto.Unmarshal(bytes, c); err != nil { | ||
| return err | ||
| } | ||
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| b.Free() | ||
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| return nil | ||
| } | ||
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| // Marshal consumes a proto.Message and returns a bufferfire | ||
| // | ||
| // NOTE: the buffer must be freed by calling `Free` on it | ||
| func Marshal[M proto.Message](c M) C.Buffer { | ||
| bytes, err := proto.Marshal(c) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
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| return toBuffer(bytes) | ||
| } | ||
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| func (c C.Buffer) Free() { | ||
| C.free(unsafe.Pointer(c.data)) | ||
| } | ||
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| // rather than use C.GoBytes, we use this function to avoid copying the bytes, | ||
| // since it is going to be immediately Unmarshalled into a proto.Message | ||
| func toBytes(b C.Buffer) []byte { | ||
| var out []byte | ||
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| len := (uint32)(b.len) | ||
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| sh := (*reflect.SliceHeader)(unsafe.Pointer(&out)) | ||
| sh.Data = uintptr(unsafe.Pointer(b.data)) | ||
| sh.Len = int(len) | ||
| sh.Cap = int(len) | ||
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| return out | ||
| } | ||
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| func toBuffer(bytes []byte) C.Buffer { | ||
| b := C.Buffer{} | ||
| b.len = C.uint(len(bytes)) | ||
| b.data = (*C.uchar)(C.CBytes(bytes)) | ||
| return b | ||
| } | ||
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| // GetTurboDataDir returns the path to the Turbo data directory | ||
| func GetTurboDataDir() string { | ||
| buffer := C.get_turbo_data_dir() | ||
| resp := ffi_proto.TurboDataDirResp{} | ||
| if err := Unmarshal(buffer, resp.ProtoReflect().Interface()); err != nil { | ||
| panic(err) | ||
| } | ||
| return resp.Dir | ||
| } |
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