Last change
on this file since 969 was
834,
checked in by garnier, 16 years ago
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import all except CVS
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Property svn:executable set to
*
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File size:
1.9 KB
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1 | // Copyright FreeHEP, 2005. |
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2 | |
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3 | #include "cheprep/GZIPOutputStreamBuffer.h" |
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4 | |
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5 | /** |
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6 | * @author Mark Donszelmann |
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7 | * @version $Id: GZIPOutputStreamBuffer.cc,v 1.4 2005/06/02 21:28:45 duns Exp $ |
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8 | */ |
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9 | namespace cheprep { |
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10 | |
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11 | using namespace std; |
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12 | |
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13 | GZIPOutputStreamBuffer::GZIPOutputStreamBuffer( streambuf *buffer) |
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14 | : DeflateOutputStreamBuffer(buffer), |
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15 | open(false) { |
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16 | |
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17 | init(true); |
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18 | } |
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19 | |
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20 | void GZIPOutputStreamBuffer::setFilename( const string &name ) { |
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21 | filename = name ; |
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22 | } |
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23 | |
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24 | void GZIPOutputStreamBuffer::setComment( const string &c ) { |
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25 | comment = c ; |
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26 | } |
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27 | |
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28 | void GZIPOutputStreamBuffer::close() { |
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29 | if (!open) return; |
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30 | |
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31 | finish(); |
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32 | writeTrailer(); |
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33 | |
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34 | open = false ; |
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35 | } |
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36 | |
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37 | GZIPOutputStreamBuffer::~GZIPOutputStreamBuffer() { |
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38 | close() ; |
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39 | } |
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40 | |
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41 | int GZIPOutputStreamBuffer::overflow( int c ) { |
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42 | if (!open) { |
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43 | writeHeader(); |
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44 | open = true; |
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45 | } |
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46 | return DeflateOutputStreamBuffer::overflow( c ) ; |
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47 | } |
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48 | |
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49 | void GZIPOutputStreamBuffer::writeHeader() { |
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50 | unsigned char flag = 0x00; |
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51 | flag |= (filename == "") ? 0x00 : 0x08; |
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52 | flag |= (comment == "") ? 0x00 : 0x10; |
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53 | |
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54 | putUB(0x1f); // Magic # |
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55 | putUB(0x8b); // Magic # |
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56 | putUB(0x08); // Deflater.DEFLATED |
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57 | putUB(flag); // FLG |
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58 | putUI(0x00000000); // MTIME |
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59 | putUB(0x00); // XFLG |
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60 | putUB(0x00); // OS |
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61 | |
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62 | if (filename != "") { |
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63 | putS(filename); // Filename |
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64 | putUB(0x00); |
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65 | } |
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66 | |
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67 | if (comment != "") { |
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68 | putS(comment); // Comment |
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69 | putUB(0x00); |
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70 | } |
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71 | } |
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72 | |
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73 | void GZIPOutputStreamBuffer::writeTrailer() { |
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74 | putUI(getCRC()); |
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75 | putUI(getSize()); |
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76 | } |
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77 | |
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78 | } // cheprep |
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