[PDFBOX-4036] Invalid ToUnicode CMap in font

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Bug
• Affects Version/s: 2.0.4, 2.0.8
• Component/s: Text extraction
• Environment: Windows 10 64 bit, STS 3.9.1, JDK 1.8.0_152, Gradle
• Assignee: Unassigned
• Reporter: Oleksii Zinkovskyi
• Created: 15/Dec/17 08:13
• Updated: 15/Dec/17 21:00
• Resolved: 15/Dec/17 21:00

Description

While calling textStripper.getText(document) on the attached PDF file to extract text and save it to .txt, I receive following warnings:

Dec 15, 2017 8:53:22 AM org.apache.pdfbox.pdmodel.font.PDFont <init>
WARNING: Invalid ToUnicode CMap in font UYQXWX+MaterialIcons-Regular
Dec 15, 2017 8:53:22 AM org.apache.pdfbox.pdmodel.font.PDType0Font toUnicode
WARNING: No Unicode mapping for CID+380 (380) in font UYQXWX+MaterialIcons-Regular
Dec 15, 2017 8:53:22 AM org.apache.pdfbox.pdmodel.font.PDType0Font toUnicode
WARNING: No Unicode mapping for CID+381 (381) in font UYQXWX+MaterialIcons-Regular
Dec 15, 2017 8:53:25 AM org.apache.pdfbox.pdmodel.font.PDFont <init>
WARNING: Invalid ToUnicode CMap in font FANHRS+MaterialIcons-Regular
Dec 15, 2017 8:53:25 AM org.apache.pdfbox.pdmodel.font.PDType0Font toUnicode
WARNING: No Unicode mapping for CID+380 (380) in font FANHRS+MaterialIcons-Regular
Dec 15, 2017 8:53:25 AM org.apache.pdfbox.pdmodel.font.PDType0Font toUnicode
WARNING: No Unicode mapping for CID+381 (381) in font FANHRS+MaterialIcons-Regular

In the end the file is generated and properly saved, but some letters are missing (like "ft" in "software" or "ff" in "different"). So far I've tested close to 10 files and this is the only problematic item I've found. Depending on what program I use to view the resulting .txt file, I either get blank spaces (Notepad) or "NUL" values (Notepad++) in place of the missing letters. What's more, some editors (Sublime Text Editor) outright refuse to open the file and view it as unreadable/corrupted byte code. Suffice to say working with such a file is somewhat difficult...