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typedef struct { |
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/* Gzip, zlib or libdeflate. */ |
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3
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int type; |
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4
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/* See zopfli.h. */ |
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5
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ZopfliOptions options; |
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unsigned int no_warn : 1; |
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7
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} |
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8
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gzip_zopfli_t; |
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9
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10
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void |
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11
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3
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gzip_zopfli_init (gzip_zopfli_t * gz) |
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{ |
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13
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3
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gz->type = ZOPFLI_FORMAT_GZIP; |
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14
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3
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ZopfliInitOptions (& gz->options); |
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3
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} |
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16
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17
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#define CMP(x, y) strlen(#y) == x ## _len && strcmp(#y, x) == 0 |
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#define TYPE(x) strlen (#x) == type_len && strcmp (#x, type) == 0 |
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20
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static void |
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2
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gzip_zopfli_set (gzip_zopfli_t * gz, SV * key_sv, SV * value) |
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22
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{ |
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char * key; |
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24
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STRLEN key_len; |
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2
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50
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key = SvPV (key_sv, key_len); |
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26
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27
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2
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50
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if (CMP(key, no_warn)) { |
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0
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28
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0
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0
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if (SvTRUE (value)) { |
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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gz->no_warn = 1; |
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} |
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else { |
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0
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gz->no_warn = 0; |
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33
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} |
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0
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return; |
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35
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} |
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37
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2
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50
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if (CMP(key, numiterations)) { |
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0
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38
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int n; |
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39
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0
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0
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if (! SvIOK (value)) { |
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0
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warn ("numiterations requires a number"); |
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} |
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0
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0
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n = SvIV (value); |
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43
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// Check values |
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0
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gz->options.numiterations = n; |
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0
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return; |
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46
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} |
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47
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2
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50
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if (CMP (key, blocksplitting)) { |
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0
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48
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0
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0
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gz->options.blocksplitting = SvTRUE (value); |
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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0
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49
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0
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return; |
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50
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} |
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51
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2
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50
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if (CMP (key, blocksplittingmax)) { |
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0
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52
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0
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0
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if (! SvIOK (value)) { |
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53
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0
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warn ("blocksplittingmax requires a number"); |
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54
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} |
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55
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0
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0
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gz->options.blocksplittingmax = SvIV (value); |
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56
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0
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return; |
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57
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} |
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58
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2
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100
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if (CMP (key, type)) { |
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50
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59
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char * type; |
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60
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STRLEN type_len; |
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61
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1
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50
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type = SvPV (value, type_len); |
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62
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1
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50
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if (TYPE(gzip)) { |
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0
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63
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0
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gz->type = ZOPFLI_FORMAT_GZIP; |
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64
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0
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return; |
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65
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} |
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66
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1
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50
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if (TYPE(deflate)) { |
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50
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67
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0
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gz->type = ZOPFLI_FORMAT_DEFLATE; |
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68
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0
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return; |
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69
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} |
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70
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1
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50
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if (TYPE(zlib)) { |
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0
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71
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0
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gz->type = ZOPFLI_FORMAT_ZLIB; |
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72
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0
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return; |
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73
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} |
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74
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1
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warn ("Unknown compression type '%s'", type); |
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75
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1
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return; |
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76
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} |
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77
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1
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50
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if (! gz->no_warn) { |
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78
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1
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warn ("Unknown option '%s'", key); |
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79
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} |
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80
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2
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return; |
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81
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} |
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82
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83
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#undef CMP |
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84
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#undef TYPE |
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85
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86
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SV * |
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87
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3
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gzip_zopfli (gzip_zopfli_t * gz, SV * in_sv) |
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88
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{ |
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89
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SV * out_sv; |
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90
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const unsigned char * in; |
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91
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STRLEN inl; |
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92
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unsigned char * out; |
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93
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size_t out_size; |
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94
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3
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50
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in = (const unsigned char *) SvPV(in_sv, inl); |
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95
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3
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out = 0; |
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96
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3
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out_size = 0; |
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97
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3
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ZopfliCompress(& gz->options, gz->type, |
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98
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in, (size_t) inl, |
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99
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& out, & out_size); |
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100
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3
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out_sv = newSVpv ((const char *) out, out_size); |
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101
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3
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return out_sv; |
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102
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} |