[jira] [Created] (PDFBOX-3498) Unexpected spaces in text extraction

["Tilman Hausherr (JIRA)" <ji...@apache.org>]

Tilman Hausherr created PDFBOX-3498:
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             Summary: Unexpected spaces in text extraction
                 Key: PDFBOX-3498
                 URL: https://issues.apache.org/jira/browse/PDFBOX-3498
             Project: PDFBox
          Issue Type: Bug
          Components: Text extraction
    Affects Versions: 2.0.2, 2.0.3
            Reporter: Tilman Hausherr
            Assignee: Tilman Hausherr
             Fix For: 2.0.4


In the tests by [~tallison@apache.org] regressions were found with files from Delaware courts, see reduced file attached.

The extracted text with 2.0.2 and 2.0.3 is
{code}
IN THE  COUR T OF  CHAN CER Y O F TH E STA TE OF  D ELA WARE
{code}
in 2.0.1 and 1.8 it was
{code}
IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE
{code}
The cause is the /W ranges table:
{code}
/W [1 1 0 2 3 250 4 10 0 11
12 333 13 14 0 15 15 250 16 16
333 17 17 250 18 18 277 19 19 0
20 23 500 24 35 0 36 36 722 37
37 666 38 39 722 40 40 666 41 41
610 42 43 777 44 44 389 45 45 0
46 46 777 47 47 666 48 48 943 49
49 722 50 50 777 51 51 610 52 52
0 53 53 722 54 54 556 55 55 666
56 57 722 59 59 0 60 60 722 61
67 0 68 68 500 69 69 556 70 70
443 71 71 556 72 72 443 73 73 333
74 74 500 75 75 556 76 76 277 77
77 0 78 78 556 79 79 277 80 80
833 81 81 556 82 82 500 83 84 556
85 85 443 86 86 389 87 87 333 88
88 556 89 89 0 90 90 722 91 92
500 93 178 0 179 180 500 181 181 0
182 182 333 183 751 0 752 752 198 753
794 0 795 795 612 796 1126 0 1127 1127
125 1129 1129 2000 1130 65534 0]
{code}
For text extraction, the width of a space is caculated by taking an average of all widths. However these files have a lot (over 60000) of widths that are 0. So I'll just ignore widths <= 0, as it is already done in PDFont.



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