| 53 | static struct suffix_tree *suftree; |
| 54 | |
| 55 | void init_compression_level(void) |
| 56 | { |
| 57 | int min_level, max_level, def_level, off_level; |
| 58 | |
| 59 | switch (do_compression) { |
| 60 | case CPRES_NONE: |
| 61 | return; |
| 62 | case CPRES_ZLIB: |
| 63 | case CPRES_ZLIBX: |
| 64 | min_level = 1; |
| 65 | max_level = Z_BEST_COMPRESSION; |
| 66 | def_level = 6; /* Z_DEFAULT_COMPRESSION is -1, so set it to the real default */ |
| 67 | off_level = skip_compression_level = Z_NO_COMPRESSION; |
| 68 | if (do_compression_level == Z_DEFAULT_COMPRESSION) |
| 69 | do_compression_level = def_level; |
| 70 | break; |
| 71 | #ifdef SUPPORT_ZSTD |
| 72 | case CPRES_ZSTD: |
| 73 | min_level = skip_compression_level = ZSTD_minCLevel(); |
| 74 | max_level = ZSTD_maxCLevel(); |
| 75 | def_level = ZSTD_CLEVEL_DEFAULT; |
| 76 | off_level = CLVL_NOT_SPECIFIED; |
| 77 | if (do_compression_level == 0) |
| 78 | do_compression_level = def_level; |
| 79 | break; |
| 80 | #endif |
| 81 | #ifdef SUPPORT_LZ4 |
| 82 | case CPRES_LZ4: |
| 83 | min_level = skip_compression_level = 0; |
| 84 | max_level = 0; |
| 85 | def_level = 0; |
| 86 | off_level = CLVL_NOT_SPECIFIED; |
| 87 | break; |
| 88 | #endif |
| 89 | default: /* paranoia to prevent missing case values */ |
| 90 | NOISY_DEATH("Unknown do_compression value"); |
| 91 | } |
| 92 | |
| 93 | if (do_compression_level == CLVL_NOT_SPECIFIED) |
| 94 | do_compression_level = def_level; |
| 95 | else if (do_compression_level == off_level) { |
| 96 | do_compression = CPRES_NONE; |
| 97 | return; |
| 98 | } |
| 99 | |
| 100 | /* We don't bother with any errors or warnings -- just make sure that the values are valid. */ |
| 101 | if (do_compression_level < min_level) |
| 102 | do_compression_level = min_level; |
| 103 | else if (do_compression_level > max_level) |
| 104 | do_compression_level = max_level; |
| 105 | } |
| 106 | |
| 107 | static void add_suffix(struct suffix_tree **prior, char ltr, const char *str) |
| 108 | { |
no outgoing calls
no test coverage detected