| 12 | |
| 13 | |
| 14 | void EncodeFileName::Decode(char *Name,size_t NameSize,byte *EncName,size_t EncSize, |
| 15 | wchar *NameW,size_t MaxDecSize) |
| 16 | { |
| 17 | size_t EncPos=0,DecPos=0; |
| 18 | byte HighByte=EncPos<EncSize ? EncName[EncPos++] : 0; |
| 19 | while (EncPos<EncSize && DecPos<MaxDecSize) |
| 20 | { |
| 21 | if (FlagBits==0) |
| 22 | { |
| 23 | if (EncPos>=EncSize) |
| 24 | break; |
| 25 | Flags=EncName[EncPos++]; |
| 26 | FlagBits=8; |
| 27 | } |
| 28 | switch(Flags>>6) |
| 29 | { |
| 30 | case 0: |
| 31 | if (EncPos>=EncSize) |
| 32 | break; |
| 33 | NameW[DecPos++]=EncName[EncPos++]; |
| 34 | break; |
| 35 | case 1: |
| 36 | if (EncPos>=EncSize) |
| 37 | break; |
| 38 | NameW[DecPos++]=EncName[EncPos++]+(HighByte<<8); |
| 39 | break; |
| 40 | case 2: |
| 41 | if (EncPos+1>=EncSize) |
| 42 | break; |
| 43 | NameW[DecPos++]=EncName[EncPos]+(EncName[EncPos+1]<<8); |
| 44 | EncPos+=2; |
| 45 | break; |
| 46 | case 3: |
| 47 | { |
| 48 | if (EncPos>=EncSize) |
| 49 | break; |
| 50 | int Length=EncName[EncPos++]; |
| 51 | if ((Length & 0x80)!=0) |
| 52 | { |
| 53 | if (EncPos>=EncSize) |
| 54 | break; |
| 55 | byte Correction=EncName[EncPos++]; |
| 56 | for (Length=(Length&0x7f)+2;Length>0 && DecPos<MaxDecSize && DecPos<NameSize;Length--,DecPos++) |
| 57 | NameW[DecPos]=((Name[DecPos]+Correction)&0xff)+(HighByte<<8); |
| 58 | } |
| 59 | else |
| 60 | for (Length+=2;Length>0 && DecPos<MaxDecSize && DecPos<NameSize;Length--,DecPos++) |
| 61 | NameW[DecPos]=Name[DecPos]; |
| 62 | } |
| 63 | break; |
| 64 | } |
| 65 | Flags<<=2; |
| 66 | FlagBits-=2; |
| 67 | } |
| 68 | NameW[DecPos<MaxDecSize ? DecPos:MaxDecSize-1]=0; |
| 69 | } |
nothing calls this directly
no outgoing calls
no test coverage detected