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111 lines
4.8 KiB
C++
111 lines
4.8 KiB
C++
// 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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#ifndef NET_BASE_MIME_UTIL_H__
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#define NET_BASE_MIME_UTIL_H__
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// This file defines MIME utility functions. All of them assume the MIME type
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// to be of the format specified by rfc2045. According to it, MIME types are
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// case strongly insensitive except parameter values, which may or may not be
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// case sensitive.
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//
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// These utilities perform a *case-sensitive* matching for parameter values,
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// which may produce some false negatives. Except that, matching is
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// case-insensitive.
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//
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// All constants in mime_util.cc must be written in lower case, except parameter
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// values, which can be any case.
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#include <stddef.h>
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#include <string>
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#include <vector>
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#include "base/files/file_path.h"
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#include "net/base/net_export.h"
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namespace net {
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// Gets the mime type (if any) that is associated with the given file extension.
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// Returns true if a corresponding mime type exists.
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NET_EXPORT bool GetMimeTypeFromExtension(const base::FilePath::StringType& ext,
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std::string* mime_type);
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// Gets the mime type (if any) that is associated with the given file extension.
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// Returns true if a corresponding mime type exists. In this method,
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// the search for a mime type is constrained to a limited set of
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// types known to the net library, the OS/registry is not consulted.
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NET_EXPORT bool GetWellKnownMimeTypeFromExtension(
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const base::FilePath::StringType& ext,
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std::string* mime_type);
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// Gets the mime type (if any) that is associated with the given file. Returns
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// true if a corresponding mime type exists.
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NET_EXPORT bool GetMimeTypeFromFile(const base::FilePath& file_path,
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std::string* mime_type);
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// Gets the preferred extension (if any) associated with the given mime type.
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// Returns true if a corresponding file extension exists. The extension is
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// returned without a prefixed dot, ex "html".
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NET_EXPORT bool GetPreferredExtensionForMimeType(
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const std::string& mime_type,
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base::FilePath::StringType* extension);
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// Returns true if this the mime_type_pattern matches a given mime-type.
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// Checks for absolute matching and wildcards. MIME types are case insensitive.
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NET_EXPORT bool MatchesMimeType(const std::string& mime_type_pattern,
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const std::string& mime_type);
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// Returns true if the |type_string| is a correctly-formed mime type specifier
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// with no parameter, i.e. string that matches the following ABNF (see the
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// definition of content ABNF in RFC2045 and media-type ABNF httpbis p2
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// semantics).
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//
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// token "/" token
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//
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// If |top_level_type| is non-NULL, sets it to parsed top-level type string.
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// If |subtype| is non-NULL, sets it to parsed subtype string.
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NET_EXPORT bool ParseMimeTypeWithoutParameter(const std::string& type_string,
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std::string* top_level_type,
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std::string* subtype);
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// Returns true if the |type_string| is a top-level type of any media type
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// registered with IANA media types registry at
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// http://www.iana.org/assignments/media-types/media-types.xhtml or an
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// experimental type (type with x- prefix).
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//
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// This method doesn't check that the input conforms to token ABNF, so if input
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// is experimental type strings, you need to check check that before using
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// this method.
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NET_EXPORT bool IsValidTopLevelMimeType(const std::string& type_string);
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// Get the extensions associated with the given mime type. There could be
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// multiple extensions for a given mime type, like "html,htm" for "text/html",
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// or "txt,text,html,..." for "text/*".
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// Note that we do not erase the existing elements in the the provided vector.
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// Instead, we append the result to it.
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NET_EXPORT void GetExtensionsForMimeType(
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const std::string& mime_type,
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std::vector<base::FilePath::StringType>* extensions);
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// Generates a random MIME multipart boundary.
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// The returned string is guaranteed to be at most 70 characters long.
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NET_EXPORT std::string GenerateMimeMultipartBoundary();
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// Prepares one value as part of a multi-part upload request.
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NET_EXPORT void AddMultipartValueForUpload(const std::string& value_name,
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const std::string& value,
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const std::string& mime_boundary,
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const std::string& content_type,
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std::string* post_data);
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// Adds the final delimiter to a multi-part upload request.
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NET_EXPORT void AddMultipartFinalDelimiterForUpload(
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const std::string& mime_boundary,
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std::string* post_data);
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} // namespace net
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#endif // NET_BASE_MIME_UTIL_H__
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