Enumerate the Samples in the set one-by-one calling the enumertor's EnumCharSamp method for each sample
| 133 | // Enumerate the Samples in the set one-by-one calling the enumertor's |
| 134 | // EnumCharSamp method for each sample |
| 135 | bool CharSampSet::EnumSamples(string file_name, CharSampEnum *enum_obj) { |
| 136 | CachedFile *fp_in; |
| 137 | unsigned int val32; |
| 138 | long i64_size, |
| 139 | i64_pos; |
| 140 | // open the file |
| 141 | fp_in = new CachedFile(file_name); |
| 142 | i64_size = fp_in->Size(); |
| 143 | if (i64_size < 1) { |
| 144 | return false; |
| 145 | } |
| 146 | // read and verify marker |
| 147 | if (fp_in->Read(&val32, sizeof(val32)) != sizeof(val32)) { |
| 148 | return false; |
| 149 | } |
| 150 | if (val32 != 0xfefeabd0) { |
| 151 | return false; |
| 152 | } |
| 153 | // start loading char samples |
| 154 | while (fp_in->eof() == false) { |
| 155 | CharSamp *new_samp = CharSamp::FromCharDumpFile(fp_in); |
| 156 | i64_pos = fp_in->Tell(); |
| 157 | if (new_samp != NULL) { |
| 158 | bool ret_flag = (enum_obj)->EnumCharSamp(new_samp, |
| 159 | (100.0f * i64_pos / i64_size)); |
| 160 | delete new_samp; |
| 161 | if (ret_flag == false) { |
| 162 | break; |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | delete fp_in; |
| 167 | return true; |
| 168 | } |
| 169 | |
| 170 | } // namespace ocrlib |