xpcom/io/nsStringStream.h

branch
TOR_BUG_9701
changeset 8
97036ab72558
equal deleted inserted replaced
-1:000000000000 0:2f246d4c7663
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6 #ifndef nsStringStream_h__
7 #define nsStringStream_h__
8
9 #include "nsIStringStream.h"
10 #include "nsStringGlue.h"
11 #include "nsMemory.h"
12
13 /**
14 * Implements:
15 * nsIStringInputStream
16 * nsIInputStream
17 * nsISeekableStream
18 * nsISupportsCString
19 */
20 #define NS_STRINGINPUTSTREAM_CONTRACTID "@mozilla.org/io/string-input-stream;1"
21 #define NS_STRINGINPUTSTREAM_CID \
22 { /* 0abb0835-5000-4790-af28-61b3ba17c295 */ \
23 0x0abb0835, \
24 0x5000, \
25 0x4790, \
26 {0xaf, 0x28, 0x61, 0xb3, 0xba, 0x17, 0xc2, 0x95} \
27 }
28
29 /**
30 * Factory method to get an nsInputStream from a byte buffer. Result will
31 * implement nsIStringInputStream and nsISeekableStream.
32 *
33 * If aAssignment is NS_ASSIGNMENT_COPY, then the resulting stream holds a copy
34 * of the given buffer (aStringToRead), and the caller is free to discard
35 * aStringToRead after this function returns.
36 *
37 * If aAssignment is NS_ASSIGNMENT_DEPEND, then the resulting stream refers
38 * directly to the given buffer (aStringToRead), so the caller must ensure that
39 * the buffer remains valid for the lifetime of the stream object. Use with
40 * care!!
41 *
42 * If aAssignment is NS_ASSIGNMENT_ADOPT, then the resulting stream refers
43 * directly to the given buffer (aStringToRead) and will free aStringToRead
44 * once the stream is closed.
45 *
46 * If aLength is less than zero, then the length of aStringToRead will be
47 * determined by scanning the buffer for the first null byte.
48 */
49 extern nsresult
50 NS_NewByteInputStream(nsIInputStream** aStreamResult,
51 const char* aStringToRead, int32_t aLength = -1,
52 nsAssignmentType aAssignment = NS_ASSIGNMENT_DEPEND);
53
54 /**
55 * Factory method to get an nsInputStream from an nsAString. Result will
56 * implement nsIStringInputStream and nsISeekableStream.
57 *
58 * The given string data will be converted to a single-byte data buffer via
59 * truncation (i.e., the high-order byte of each character will be discarded).
60 * This could result in data-loss, so be careful when using this function.
61 */
62 extern nsresult
63 NS_NewStringInputStream(nsIInputStream** aStreamResult,
64 const nsAString& aStringToRead);
65
66 /**
67 * Factory method to get an nsInputStream from an nsACString. Result will
68 * implement nsIStringInputStream and nsISeekableStream.
69 */
70 extern nsresult
71 NS_NewCStringInputStream(nsIInputStream** aStreamResult,
72 const nsACString& aStringToRead);
73
74 #endif // nsStringStream_h__

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