hpftodit(1) General Commands Manual hpftodit(1)
Name
hpftodit - create font description files for use with groff and grolj4
Synopsis
hpftodit [-aqs] [-i n] tfm-file map-file font-description
hpftodit -d tfm-file [map-file]
hpftodit --help
hpftodit -v
hpftodit --version
Description
hpftodit creates a font description file for use with a Hewlett-Packard
LaserJet 4-series (or newer) printer with the grolj4(1) output driver
of groff(1), using data from an HP tagged font metric (TFM) file.
tfm-file is the name of the font's TFM file; Intellifont and TrueType
TFM files are supported, but symbol set TFM files are not. map-file is
a file giving the groff special character identifiers for glyphs in the
font; this file should consist of a sequence of lines of the form
m u c1 c2 ... [# comment]
where m is a decimal integer giving the glyph's MSL (Master Symbol
List) number, u is a hexadecimal integer giving its Unicode character
code, and c1, c2, ... are its groff glyph names (see groff_char(7) for
a list). The values can be separated by any number of spaces and/or
tabs. The Unicode value must use uppercase hexadecimal digits A–F, and
must lack a leading “0x”, “u”, or “U+”. Unicode values corresponding
to composite glyphs are decomposed; that is “u00C0” becomes
“u0041_0300”. A glyph without a groff special character identifier may
be named uXXXX if the glyph corresponds to a Unicode value, or as an
unnamed glyph “---”. If the given Unicode value is in the Private Use
Area (PUA) (0xE000–0xF8FF), the glyph is included as an unnamed glyph.
Refer to groff_diff(1) for additional information about unnamed glyphs
and how to access them.
Blank lines and lines beginning with “#” are ignored. A “#” following
one or more groff names begins a comment. Because “#” is a valid groff
name, it must appear first in a list of groff names if a comment is
included, as in
3 0023 # # number sign
or
3 0023 # sh # number sign
whereas in
3 0023 sh # # number sign
the first “#” is interpreted as the beginning of the comment.
Output is written in groff_font(5) format to font-description, a file
named for the intended groff font name; if this operand is “-”, the
font description is written to the standard output stream.
If the -i option is used, hpftodit automatically will generate an
italic correction, a left italic correction, and a subscript correction
for each glyph (the significance of these parameters is explained in
groff_font(5)).
Options
--help displays a usage message, while -v and --version show version
information; all exit afterward.
-a Include glyphs in the TFM file that are not included in
map-file. A glyph with corresponding Unicode value is given the
name uXXXX; a glyph without a Unicode value is included as an
unnamed glyph “---”. A glyph with a Unicode value in the
Private Use Area (0xE000–0xF8FF) is also included as an unnamed
glyph.
This option provides a simple means of adding Unicode-named and
unnamed glyphs to a font without including them in the map file,
but it affords little control over which glyphs are placed in a
regular font and which are placed in a special font. The
presence or absence of the -s option has some effect on which
glyphs are included: without it, only the “text” symbol sets are
searched for matching glyphs; with it, only the “mathematical”
symbol sets are searched. Nonetheless, restricting the symbol
sets searched isn't very selective—many glyphs are placed in
both regular and special fonts. Normally, -a should be used
only as a last resort.
-d Dump information about the TFM file to the standard output
stream; use this to ensure that a TFM file is a proper match for
a font, and that its contents are suitable. The information
includes the values of important TFM tags and a listing (by MSL
number for Intellifont TFM files or by Unicode value for
TrueType TFM files) of the glyphs included in the TFM file. The
unit of measure “DU” for some tags indicates design units; there
are 8782 design units per em for Intellifont fonts, and
2048 design units per em for TrueType fonts. Note that the
accessibility of a glyph depends on its inclusion in a symbol
set; some TFM files list many glyphs but only a few symbol sets.
The glyph listing includes the glyph index within the TFM file,
the MSL or Unicode value, and the symbol set and character code
that will be used to print the glyph. If map-file is given,
groff names are given for matching glyphs. If only the glyph
index and MSL or Unicode value are given, the glyph does not
appear in any supported symbol set and cannot be printed.
With the -d option, map-file is optional, and output-font is
ignored if given.
-i n Generate an italic correction for each glyph so that its width
plus its italic correction is equal to n thousandths of an em
plus the amount by which the right edge of the glyphs's bounding
box is to the right of its origin. If a negative italic
correction would result, use a zero italic correction instead.
Also generate a subscript correction equal to the product of the
tangent of the slant of the font and four fifths of the x-height
of the font. If a subscript correction greater than the italic
correction would result, use a subscript correction equal to the
italic correction instead.
Also generate a left italic correction for each glyph equal to n
thousandths of an em plus the amount by which the left edge of
the glyphs's bounding box is to the left of its origin. The
left italic correction may be negative.
This option normally is needed only with italic or oblique
fonts; a value of 50 (0.05 em) usually is a reasonable choice.
-q Suppress warnings about glyphs in the map file that were not
found in the TFM file. Warnings never are given for unnamed
glyphs or by glyphs named by their Unicode values. This option
is useful when sending the output of hpftodit to the standard
output stream.
-s Add the special directive to the font description file,
affecting the order in which HP symbol sets are searched for
each glyph. Without this option, the “text” sets are searched
before the “mathematical” symbol sets. With it, the search
order is reversed.
Files
/opt/homebrew/Cellar/groff/1.23.0_1/share/groff/1.23.0/font/devlj4/DESC
describes the lj4 output device.
/opt/homebrew/Cellar/groff/1.23.0_1/share/groff/1.23.0/font/devlj4/F
describes the font known as F on device lj4.
/opt/homebrew/Cellar/groff/1.23.0_1/share/groff/1.23.0/font/devlj4/generate/Makefile
is a make(1) script that uses hpftodit(1) to prepare the groff
font description files above from HP TFM data; in can be used to
regenerate them in the event the TFM files are updated.
/opt/homebrew/Cellar/groff/1.23.0_1/share/groff/1.23.0/font/devlj4/generate/special.awk
is an awk(1) script that corrects the Intellifont-based height
metrics for several glyphs in the S (special) font for TrueType
CG Times used in the HP LaserJet 4000 and later.
/opt/homebrew/Cellar/groff/1.23.0_1/share/groff/1.23.0/font/devlj4/generate/special.map
/opt/homebrew/Cellar/groff/1.23.0_1/share/groff/1.23.0/font/devlj4/generate/symbol.map
/opt/homebrew/Cellar/groff/1.23.0_1/share/groff/1.23.0/font/devlj4/generate/text.map
/opt/homebrew/Cellar/groff/1.23.0_1/share/groff/1.23.0/font/devlj4/generate/wingdings.map
map MSL indices and HP Unicode PUA assignments to groff special
character identifiers.
See also
groff(1), groff_diff(1), grolj4(1), groff_font(5)
groff 1.23.0 5 July 2023 hpftodit(1)