ftrandom

--------



This program expects a set of directories containing good fonts, and a set

of extensions of fonts to be tested.  It will randomly pick a font, copy it,

introduce and error and then test it.



The FreeType tests are quite basic:



  For each erroneous font it

    forks off a new tester;

    initializes the library;

    opens each font in the file;

    loads each glyph;

      (optionally reviewing the contours of the glyph)

      (optionally rasterizing)

    closes the face.



If the tester exits with a signal, or takes longer than 20 seconds then

ftrandom saves the erroneous font and continues.  If the tester exits

normally or with an error, then the superstructure removes the test font and

continues.



Arguments are:



  --all                    Test every font in the directory(ies) no matter

                           what its extension (some CID-keyed fonts have no

                           extension).

  --check-outlines         Call FT_Outline_Decompose on each glyph.

  --dir <dir>              Append <dir> to the list of directories to search

                           for good fonts.

  --error-count <cnt>      Introduce <cnt> single-byte errors into the

                           erroneous fonts.

  --error-fraction <frac>  Multiply the file size of the font by <frac> and

                           introduce that many errors into the erroneous

                           font file.

  --ext <ext>              Add <ext> to the set of font types tested.  Known

                           extensions are `ttf', `otf', `ttc', `cid', `pfb',

                           `pfa', `bdf', `pcf', `pfr', `fon', `otb', and

                           `cff'.

  --help                   Print out this list of options.

  --nohints                Specify FT_LOAD_NO_HINTING when loading glyphs.

  --rasterize              Call FT_Render_Glyph as well as loading it.

  --result <dir>           This is the directory in which test files are

                           placed.

  --test <file>            Run a single test on a pre-generated testcase. 

                           Done in the current process so it can be debugged

                           more easily.

