forked from mirrors/gecko-dev
247 lines
9.3 KiB
Text
247 lines
9.3 KiB
Text
/* Copyright (c) 2012 The Chromium Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/**
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* This file defines the API to create a file reference or "weak pointer" to a
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* file in a file system.
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*/
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label Chrome {
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M14 = 1.0,
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M28 = 1.1,
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M34 = 1.2
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};
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/**
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* The <code>PP_MakeDirectoryFlags</code> enum contains flags used to control
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* behavior of <code>PPB_FileRef.MakeDirectory()</code>.
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*/
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enum PP_MakeDirectoryFlags {
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PP_MAKEDIRECTORYFLAG_NONE = 0 << 0,
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/** Requests that ancestor directories are created if they do not exist. */
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PP_MAKEDIRECTORYFLAG_WITH_ANCESTORS = 1 << 0,
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/**
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* Requests that the PPB_FileRef.MakeDirectory() call fails if the directory
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* already exists.
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*/
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PP_MAKEDIRECTORYFLAG_EXCLUSIVE = 1 << 1
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};
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/**
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* The <code>PPB_FileRef</code> struct represents a "weak pointer" to a file in
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* a file system. This struct contains a <code>PP_FileSystemType</code>
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* identifier and a file path string.
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*/
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interface PPB_FileRef {
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/**
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* Create() creates a weak pointer to a file in the given file system. File
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* paths are POSIX style.
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*
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* @param[in] resource A <code>PP_Resource</code> corresponding to a file
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* system.
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* @param[in] path A path to the file. Must begin with a '/' character.
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*
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* @return A <code>PP_Resource</code> corresponding to a file reference if
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* successful or 0 if the path is malformed.
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*/
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PP_Resource Create([in] PP_Resource file_system, [in] str_t path);
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/**
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* IsFileRef() determines if the provided resource is a file reference.
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*
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* @param[in] resource A <code>PP_Resource</code> corresponding to a file
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* reference.
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*
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* @return <code>PP_TRUE</code> if the resource is a
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* <code>PPB_FileRef</code>, <code>PP_FALSE</code> if the resource is
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* invalid or some type other than <code>PPB_FileRef</code>.
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*/
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PP_Bool IsFileRef([in] PP_Resource resource);
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/**
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* GetFileSystemType() returns the type of the file system.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
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* reference.
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*
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* @return A <code>PP_FileSystemType</code> with the file system type if
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* valid or <code>PP_FILESYSTEMTYPE_INVALID</code> if the provided resource
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* is not a valid file reference.
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*/
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PP_FileSystemType GetFileSystemType([in] PP_Resource file_ref);
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/**
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* GetName() returns the name of the file.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
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* reference.
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*
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* @return A <code>PP_Var</code> containing the name of the file. The value
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* returned by this function does not include any path components (such as
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* the name of the parent directory, for example). It is just the name of the
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* file. Use GetPath() to get the full file path.
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*/
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PP_Var GetName([in] PP_Resource file_ref);
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/**
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* GetPath() returns the absolute path of the file.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
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* reference.
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*
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* @return A <code>PP_Var</code> containing the absolute path of the file.
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* This function fails if the file system type is
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* <code>PP_FileSystemType_External</code>.
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*/
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PP_Var GetPath([in] PP_Resource file_ref);
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/**
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* GetParent() returns the parent directory of this file. If
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* <code>file_ref</code> points to the root of the filesystem, then the root
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* is returned.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
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* reference.
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*
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* @return A <code>PP_Resource</code> containing the parent directory of the
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* file. This function fails if the file system type is
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* <code>PP_FileSystemType_External</code>.
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*/
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PP_Resource GetParent([in] PP_Resource file_ref);
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/**
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* MakeDirectory() makes a new directory in the file system as well as any
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* parent directories if the <code>make_ancestors</code> argument is
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* <code>PP_TRUE</code>. It is not valid to make a directory in the external
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* file system.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
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* reference.
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* @param[in] make_ancestors A <code>PP_Bool</code> set to
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* <code>PP_TRUE</code> to make ancestor directories or <code>PP_FALSE</code>
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* if ancestor directories are not needed.
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* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
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* completion of MakeDirectory().
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*
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* @return An int32_t containing an error code from <code>pp_errors.h</code>.
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* Succeeds if the directory already exists. Fails if ancestor directories
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* do not exist and <code>make_ancestors</code> was passed as
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* <code>PP_FALSE</code>.
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*/
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[deprecate=1.2]
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int32_t MakeDirectory([in] PP_Resource directory_ref,
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[in] PP_Bool make_ancestors,
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[in] PP_CompletionCallback callback);
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/**
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* MakeDirectory() makes a new directory in the file system according to the
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* given <code>make_directory_flags</code>, which is a bit-mask of the
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* <code>PP_MakeDirectoryFlags</code> values. It is not valid to make a
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* directory in the external file system.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
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* reference.
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* @param[in] make_directory_flags A bit-mask of the
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* <code>PP_MakeDirectoryFlags</code> values.
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* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
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* completion of MakeDirectory().
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*
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* @return An int32_t containing an error code from <code>pp_errors.h</code>.
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*/
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[version=1.2]
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int32_t MakeDirectory([in] PP_Resource directory_ref,
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[in] int32_t make_directory_flags,
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[in] PP_CompletionCallback callback);
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/**
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* Touch() Updates time stamps for a file. You must have write access to the
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* file if it exists in the external filesystem.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
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* reference.
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* @param[in] last_access_time The last time the file was accessed.
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* @param[in] last_modified_time The last time the file was modified.
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* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
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* completion of Touch().
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*
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* @return An int32_t containing an error code from <code>pp_errors.h</code>.
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*/
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int32_t Touch([in] PP_Resource file_ref,
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[in] PP_Time last_access_time,
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[in] PP_Time last_modified_time,
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[in] PP_CompletionCallback callback);
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/**
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* Delete() deletes a file or directory. If <code>file_ref</code> refers to
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* a directory, then the directory must be empty. It is an error to delete a
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* file or directory that is in use. It is not valid to delete a file in
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* the external file system.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
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* reference.
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* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
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* completion of Delete().
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*
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* @return An int32_t containing an error code from <code>pp_errors.h</code>.
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*/
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int32_t Delete([in] PP_Resource file_ref,
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[in] PP_CompletionCallback callback);
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/**
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* Rename() renames a file or directory. Arguments <code>file_ref</code> and
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* <code>new_file_ref</code> must both refer to files in the same file
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* system. It is an error to rename a file or directory that is in use. It
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* is not valid to rename a file in the external file system.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
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* reference.
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* @param[in] new_file_ref A <code>PP_Resource</code> corresponding to a new
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* file reference.
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* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
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* completion of Rename().
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*
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* @return An int32_t containing an error code from <code>pp_errors.h</code>.
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*/
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int32_t Rename([in] PP_Resource file_ref,
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[in] PP_Resource new_file_ref,
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[in] PP_CompletionCallback callback);
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/**
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* Query() queries info about a file or directory. You must have access to
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* read this file or directory if it exists in the external filesystem.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a file
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* reference.
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* @param[out] info A pointer to a <code>PP_FileInfo</code> which will be
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* populated with information about the file or directory.
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* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
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* completion of Query().
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*
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* @return An int32_t containing an error code from <code>pp_errors.h</code>.
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*/
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[version=1.1]
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int32_t Query([in] PP_Resource file_ref,
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[out] PP_FileInfo info,
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[in] PP_CompletionCallback callback);
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/**
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* ReadDirectoryEntries() reads all entries in a directory.
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*
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* @param[in] file_ref A <code>PP_Resource</code> corresponding to a directory
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* reference.
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* @param[in] output An output array which will receive
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* <code>PP_DirectoryEntry</code> objects on success.
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* @param[in] callback A <code>PP_CompletionCallback</code> to run on
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* completion.
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*
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* @return An int32_t containing an error code from <code>pp_errors.h</code>.
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*/
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[version=1.1]
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int32_t ReadDirectoryEntries([in] PP_Resource file_ref,
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[in] PP_ArrayOutput output,
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[in] PP_CompletionCallback callback);
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};
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