other-licenses/7zstub/src/7zip/Archive/7z/7zMethodID.cpp@97036ab72558 (annotated)
other-licenses/7zstub/src/7zip/Archive/7z/7zMethodID.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 | // 7zMethodID.cpp |
| michael@0 | 2 | |
| michael@0 | 3 | #include "StdAfx.h" |
| michael@0 | 4 | |
| michael@0 | 5 | #include "7zMethodID.h" |
| michael@0 | 6 | |
| michael@0 | 7 | namespace NArchive { |
| michael@0 | 8 | namespace N7z { |
| michael@0 | 9 | |
| michael@0 | 10 | static wchar_t GetHex(Byte value) |
| michael@0 | 11 | { |
| michael@0 | 12 | return (value < 10) ? ('0' + value) : ('A' + (value - 10)); |
| michael@0 | 13 | } |
| michael@0 | 14 | |
| michael@0 | 15 | static bool HexCharToInt(wchar_t value, Byte &result) |
| michael@0 | 16 | { |
| michael@0 | 17 | if (value >= '0' && value <= '9') |
| michael@0 | 18 | result = value - '0'; |
| michael@0 | 19 | else if (value >= 'a' && value <= 'f') |
| michael@0 | 20 | result = 10 + value - 'a'; |
| michael@0 | 21 | else if (value >= 'A' && value <= 'F') |
| michael@0 | 22 | result = 10 + value - 'A'; |
| michael@0 | 23 | else |
| michael@0 | 24 | return false; |
| michael@0 | 25 | return true; |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | static bool TwoHexCharsToInt(wchar_t valueHigh, wchar_t valueLow, Byte &result) |
| michael@0 | 29 | { |
| michael@0 | 30 | Byte resultHigh, resultLow; |
| michael@0 | 31 | if (!HexCharToInt(valueHigh, resultHigh)) |
| michael@0 | 32 | return false; |
| michael@0 | 33 | if (!HexCharToInt(valueLow, resultLow)) |
| michael@0 | 34 | return false; |
| michael@0 | 35 | result = (resultHigh << 4) + resultLow; |
| michael@0 | 36 | return true; |
| michael@0 | 37 | } |
| michael@0 | 38 | |
| michael@0 | 39 | UString CMethodID::ConvertToString() const |
| michael@0 | 40 | { |
| michael@0 | 41 | UString result; |
| michael@0 | 42 | for (int i = 0; i < IDSize; i++) |
| michael@0 | 43 | { |
| michael@0 | 44 | Byte b = ID[i]; |
| michael@0 | 45 | result += GetHex(b >> 4); |
| michael@0 | 46 | result += GetHex(b & 0xF); |
| michael@0 | 47 | } |
| michael@0 | 48 | return result; |
| michael@0 | 49 | } |
| michael@0 | 50 | |
| michael@0 | 51 | bool CMethodID::ConvertFromString(const UString &srcString) |
| michael@0 | 52 | { |
| michael@0 | 53 | int length = srcString.Length(); |
| michael@0 | 54 | if ((length & 1) != 0 || (length >> 1) > kMethodIDSize) |
| michael@0 | 55 | return false; |
| michael@0 | 56 | IDSize = length / 2; |
| michael@0 | 57 | UInt32 i; |
| michael@0 | 58 | for(i = 0; i < IDSize; i++) |
| michael@0 | 59 | if (!TwoHexCharsToInt(srcString[i * 2], srcString[i * 2 + 1], ID[i])) |
| michael@0 | 60 | return false; |
| michael@0 | 61 | for(; i < kMethodIDSize; i++) |
| michael@0 | 62 | ID[i] = 0; |
| michael@0 | 63 | return true; |
| michael@0 | 64 | } |
| michael@0 | 65 | |
| michael@0 | 66 | bool operator==(const CMethodID &a1, const CMethodID &a2) |
| michael@0 | 67 | { |
| michael@0 | 68 | if (a1.IDSize != a2.IDSize) |
| michael@0 | 69 | return false; |
| michael@0 | 70 | for (UInt32 i = 0; i < a1.IDSize; i++) |
| michael@0 | 71 | if (a1.ID[i] != a2.ID[i]) |
| michael@0 | 72 | return false; |
| michael@0 | 73 | return true; |
| michael@0 | 74 | } |
| michael@0 | 75 | |
| michael@0 | 76 | }} |
