intl/lwbrk/src/nsSemanticUnitScanner.cpp@97036ab72558 (annotated)
intl/lwbrk/src/nsSemanticUnitScanner.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "nsSemanticUnitScanner.h" |
| michael@0 | 7 | |
| michael@0 | 8 | NS_IMPL_ISUPPORTS(nsSemanticUnitScanner, nsISemanticUnitScanner) |
| michael@0 | 9 | |
| michael@0 | 10 | nsSemanticUnitScanner::nsSemanticUnitScanner() : nsSampleWordBreaker() |
| michael@0 | 11 | { |
| michael@0 | 12 | /* member initializers and constructor code */ |
| michael@0 | 13 | } |
| michael@0 | 14 | |
| michael@0 | 15 | nsSemanticUnitScanner::~nsSemanticUnitScanner() |
| michael@0 | 16 | { |
| michael@0 | 17 | /* destructor code */ |
| michael@0 | 18 | } |
| michael@0 | 19 | |
| michael@0 | 20 | |
| michael@0 | 21 | /* void start (in string characterSet); */ |
| michael@0 | 22 | NS_IMETHODIMP nsSemanticUnitScanner::Start(const char *characterSet) |
| michael@0 | 23 | { |
| michael@0 | 24 | // do nothing for now. |
| michael@0 | 25 | return NS_OK; |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | /* void next (in wstring text, in long length, in long pos, out boolean hasMoreUnits, out long begin, out long end); */ |
| michael@0 | 29 | NS_IMETHODIMP nsSemanticUnitScanner::Next(const char16_t *text, int32_t length, int32_t pos, bool isLastBuffer, int32_t *begin, int32_t *end, bool *_retval) |
| michael@0 | 30 | { |
| michael@0 | 31 | // xxx need to bullet proff and check input pointer |
| michael@0 | 32 | // make sure begin, end and _retval is not nullptr here |
| michael@0 | 33 | |
| michael@0 | 34 | // if we reach the end, just return |
| michael@0 | 35 | if (pos >= length) { |
| michael@0 | 36 | *begin = pos; |
| michael@0 | 37 | *end = pos; |
| michael@0 | 38 | *_retval = false; |
| michael@0 | 39 | return NS_OK; |
| michael@0 | 40 | } |
| michael@0 | 41 | |
| michael@0 | 42 | uint8_t char_class = nsSampleWordBreaker::GetClass(text[pos]); |
| michael@0 | 43 | |
| michael@0 | 44 | // if we are in chinese mode, return one han letter at a time |
| michael@0 | 45 | // we should not do this if we are in Japanese or Korean mode |
| michael@0 | 46 | if (kWbClassHanLetter == char_class) { |
| michael@0 | 47 | *begin = pos; |
| michael@0 | 48 | *end = pos+1; |
| michael@0 | 49 | *_retval = true; |
| michael@0 | 50 | return NS_OK; |
| michael@0 | 51 | } |
| michael@0 | 52 | |
| michael@0 | 53 | int32_t next; |
| michael@0 | 54 | // find the next "word" |
| michael@0 | 55 | next = NextWord(text, (uint32_t) length, (uint32_t) pos); |
| michael@0 | 56 | |
| michael@0 | 57 | // if we don't have enough text to make decision, return |
| michael@0 | 58 | if (next == NS_WORDBREAKER_NEED_MORE_TEXT) { |
| michael@0 | 59 | *begin = pos; |
| michael@0 | 60 | *end = isLastBuffer ? length : pos; |
| michael@0 | 61 | *_retval = isLastBuffer; |
| michael@0 | 62 | return NS_OK; |
| michael@0 | 63 | } |
| michael@0 | 64 | |
| michael@0 | 65 | // if what we got is space or punct, look at the next break |
| michael@0 | 66 | if ((char_class == kWbClassSpace) || (char_class == kWbClassPunct)) { |
| michael@0 | 67 | // if the next "word" is not letters, |
| michael@0 | 68 | // call itself recursively with the new pos |
| michael@0 | 69 | return Next(text, length, next, isLastBuffer, begin, end, _retval); |
| michael@0 | 70 | } |
| michael@0 | 71 | |
| michael@0 | 72 | // for the rest, return |
| michael@0 | 73 | *begin = pos; |
| michael@0 | 74 | *end = next; |
| michael@0 | 75 | *_retval = true; |
| michael@0 | 76 | return NS_OK; |
| michael@0 | 77 | } |
| michael@0 | 78 |
