Man page - ftvalid(1)

Packages contains this manual

Package:  freetype2-demos
apt-get install freetype2-demos

Manuals in package:
• ftstring(1)
• ftmulti(1)
• ftvalid(1)
• ftsdf(1)
• ftgrid(1)
• ftgamma(1)
• ftdump(1)
• ftdiff(1)
• ftlint(1)
• ftbench(1)
• ftview(1)
• ttdebug(1)
Documentations in package:
• freetype2-demos

Manual

FTVALID

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
ENVIRONMENT VARIABLES

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NAME

ftvalid - font layout table validator

SYNOPSIS

ftvalid [ options ] fontfile

DESCRIPTION

ftvalid is an OpenType layout table validator.

This program is part of the FreeType demos package.

OPTIONS

-f index

Select font index (default: 0).

-t validator

Select validator. Available validators are ot , gx , and ckern .

Note that the availability of validators depends on compile-time options of FreeType (this is, whether the modules ‘otvalid’ and ‘gxvalid’ are compiled into the library).

-T tbls

[ot, gx] Select sfnt table name tags to be validated. Use ‘:’ to separate tags.

Supported tables in ot validator are BASE , GDEF , GPOS , GSUB , JSTF , and MATH .

Supported tables in gx validator are feat , mort , morx , bsln , just , kern , opbd , trak , prop , and lcar .

Example: -T "feat:morx"

-T dialect

[ckern] Select classic kern dialect for validation. Use ‘:’ to separate dialect names. If more than one dialect is specified, all dialects are accepted when validating.

Supported dialects in ckern validator are ms and apple .

-l

List the layout-related SFNT tables available in the font file. The selected validator (with option -t ) affects the list.

ckern is applicable to ‘kern’ table only. Option -L lists dialects supported in ckern validator only if ‘kern’ table is available in the font file.

-V level

Validation level. Possible values are 0 (default), 1 (tight), and 2 (paranoid).

-v

Show version.

ENVIRONMENT VARIABLES

FT2_DEBUG

You can specify ‘ component : level ’ pairs for tracing. level must be in the range [1,7].

Available components for ot validator are otvmodule , otvcommon , otvbase , otvgdef , otvgpos , otvgsub , and otvjstf .

Available components for gx validator are gxvmodule , gxvcommon , gxvfeat , gxvmort , gxvmorx , gxvbsln , gxvjust , gxvkern , gxvopbd , gxvtrak , gxvprop , and gxvlcar .

Available component for ckern validator is gxvkern only.

Example: FT2_DEBUG="otvcommon:5 gxvkern:7"

FT2_DEBUG only works if tracing support is compiled into FreeType.

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