Remove utils/archive. It is not used at this point.

utils/archive/messaging.h

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#ifndef DART_ARCHIVE_MESSAGING_H_
-#define DART_ARCHIVE_MESSAGING_H_
-
-#include "dart_archive.h"
-
-/**
- * Posts a reponse to the main Dart isolate. Only one response should be sent
- * for each request.
- *
- * [p] is the reply port for the isolate. [success] indicates whether or not the
- * request completed successfully; if not, [err] indicates the precise nature of
- * the error. [response] contains request-specific response data to send to
- * Dart; it may not be `NULL`, but it may be the Dart `null` value.
- */
-void postResult(Dart_Port p, bool success, int err, Dart_CObject* response);
-
-/**
- * Posts an error response to the main Dart isolate.
- *
- * This should be used when libarchive signals an error. The errno and error
- * message are taken from libarchive's built-in error information for [a].
- */
-void postError(Dart_Port p, struct archive* a);
-
-/**
- * Posts an invalid argument error response to the main Dart isolate.
- *
- * This should be used when the arguments sent by the Dart code have unexpected
- * types. Takes a `printf`-style [format] string for describing the error. Note
- * that the error string will be cut off at 256 characters.
- */
-void postInvalidArgument(Dart_Port p, const char* format, ...);
-
-/**
- * Posts a success response to the main Dart isolate. [response] is the
- * request-specific Dart object containing the response data. It may be `NULL`.
- */
-void postSuccess(Dart_Port p, Dart_CObject* response);
-
-/**
- * Checks [error], the return code of a libarchive call for error conditions,
- * and sends an appropriate error response if any are detected.
- * 
- * Returns `true` if an error is detected and the containing function should
- * short-circuit.
- */
-bool checkError(Dart_Port p, struct archive* a, int result);
-
-/**
- * Sends an error response if [pointer] is invalid. [name] is the name of the
- * object being allocated, for error reporting.
- * 
- * Returns `true` if an error is detected and the containing function should
- * short-circuit.
- */
-bool checkPointerError(Dart_Port p, void* pointer, char* name);
-
-/**
- * Like [checkError], but sends a success message with no attached data if no
- * error is detected. No further responses should be sent after calling this.
- */
-void checkResult(Dart_Port p, struct archive* a, int result);
-
-/**
- * Like [checkPointerError], but sends a success message with the pointer as a
- * Dart integer if no error is detected. No further responses should be sent
- * after calling this.
- */
-void checkPointerResult(Dart_Port p, void* pointer, char* name);
-
-/**
- * Checks that [object] is of the expected type [type]. If not, sends an
- * appropriate error response.
- *
- * Returns `true` if a type error is detected and the containing function should
- * short-circuit.
- */
-bool checkType(Dart_Port p, Dart_CObject* object, enum Type type);
-
-/**
- * Gets the [i]th argument from [request], which should be the Dart object
- * passed in to each handler function. If this fails (e.g. there isn't an [i]th
- * argument), it will return `NULL`.
- */
-Dart_CObject* getArgument(Dart_Port p, Dart_CObject* request, int i);
-
-/**
- * Like [getArgument], but also ensures that the argument is of type [type].
- */
-Dart_CObject* getTypedArgument(Dart_Port p, Dart_CObject* request, int i,
-                               enum Type type);
-
-/**
- * Like [getArgument], but also ensures that the argument is an integer type
- * (`int32` or `int64`). [getInteger] should be used to extract the actual value
- * of the argument.
- */
-Dart_CObject* getIntArgument(Dart_Port p, Dart_CObject* request, int i);
-
-/**
- * Gets the integer value of [object], which should be an `int32` or an `int64`.
- * Note that this does not validate the type of its argument.
- */
-int64_t getInteger(Dart_CObject* object);
-
-/**
- * Like [getArgument], but also ensures that the argument is a string or null.
- * [getNullableString] should be used to extract the actual value of the
- * argument.
- */
-Dart_CObject* getNullableStringArgument(Dart_Port p, Dart_CObject* request,
-    int i);
-
-/**
- * Gets the string value of [object] or `NULL` if it's null. Note that this does
- * not validate the type of its argument.
- */
-char* getNullableString(Dart_CObject* object);
-
-/**
- * Gets the module, name, and value, for a libarchive `set_option` function
- * call. Returns whether or not the arguments were parsed correctly.
- */
-bool getOptionArguments(Dart_Port p, Dart_CObject* request, char** module,
-    char** name, char** value);
-
-/** Declares a null [Dart_CObject] named [name]. */
-#define DART_NULL(name) \
-  Dart_CObject name;    \
-  name.type = kNull;
-
-/**
- * Declares a [Dart_CObject] bool named [name] with value [val].
- *
- * [val] should be a C boolean.
- */
-#define DART_BOOL(name, val) \
-  Dart_CObject name;         \
-  name.type = kBool;         \
-  name.value.as_bool = val;
-
-/**
- * Declares a [Dart_CObject] `int32` named [name] with value [val].
- *
- * [val] should be a C integer.
- */
-#define DART_INT32(name, val) \
-  Dart_CObject name;          \
-  name.type = kInt32;         \
-  name.value.as_int32 = val;
-
-/**
- * Declares a [Dart_CObject] `int64` named [name] with value [val].
- *
- * [val] should be a C integer.
- */
-#define DART_INT64(name, val) \
-  Dart_CObject name;          \
-  name.type = kInt64;         \
-  name.value.as_int64 = val;
-
-/**
- * Declares a [Dart_CObject] double named [name] with value [val].
- *
- * [val] should be a C float.
- */
-#define DART_DOUBLE(name, val) \
-  Dart_CObject name;           \
-  name.type = kDouble;         \
-  name.value.as_double = val;
-
-/**
- * Declares a [Dart_CObject] string named [name] with value [val].
- *
- * [val] should be a C string or `NULL`.
- */
-#define DART_STRING(name, val)  \
-  Dart_CObject name;            \
-  if (val == NULL) {            \
-    name.type = kNull;          \
-  } else {                      \
-    name.type = kString;        \
-    name.value.as_string = val; \
-  }
-
-#endif  // DART_ARCHIVE_MESSAGING_H_