The encoding for the .ttx file generated is now hard-coded to be utf-8. Change-Id: I71c208327995651fcf44b6961510f84bafb05848
This tool is used to rename the PS name encoded inside the ttf font that we ship with the SDK. There is bug in Java that returns incorrect results for java.awt.Font#layoutGlyphVector() if two fonts with same name but differnt versions are loaded. As a workaround, we rename all the fonts that we ship with the SDK by appending the font version to its name. The build_font.py copies all files from input_dir to output_dir while renaming the font files (*.ttf) in the process.