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psfxform(1) |
PSF Tools |
psfxform(1) |
psfxform - Apply various transformations to a PC Screen Font file
psfxform [--first=FIRST] [--last=LAST] [--256]
[--bold=RANGE] [--centre=RANGE] [--double=RANGE]
[--flip=RANGE] [--repeat=RANGE] [--scale=RANGE]
[--thin=RANGE] [--strip] [--width=WIDTH]
[--height=HEIGHT] [--codepage=CODEPAGE]
[--setcodepage=CODEPAGE] [--permute=FILE] [--psf1]
[--psf2] [INPUTFILE [OUTPUTFILE]]
psfxform extracts some or all characters from a font in the .PSF format, applies
various transformations, and saves the result as another .PSF font. Subsets
can be extracted as a range of characters, as a codepage, or both.
The character ranges passed to --bold, --double and so on are
optional. If present, they are formed as a comma-separated list - each
element is nnn for a single character, nnn-nnn for a contiguous set of
characters. For example, to apply --repeat to characters 8,10 and 179 to
223: --repeat=8,10,179-223
- --codepage=x
- Extracts only the characters in the given codepage (requires the source
PSF file to have a Unicode directory). Any characters in the codepage not
present in the source font are replaced by blanks. The codepage can be
specified by number or name; see psfpages(1) for a list of acceptable
codepage names.
- --setcodepage=x
- Replace any Unicode information in the extracted font by the Unicode
mappings for the specified codepage. Note that this option does not change
the character bitmaps in any way.
- --strip
- Forces the output font to be written with no Unicode directory, even if
the source font had one.
- --first=n
- Extracts characters starting at the specified character.
- --last=n
- Extracts characters up to and including the specified character.
- --256
- Equivalent to --first=0 --last=255.
- --permute=filename
- Rearrange the character bitmaps in the output file. This only affects
character bitmaps, not the Unicode directory. The filename passed to
--permute can be "-" for standard input; its format should be a
series of lines, each containing two numbers separated by a comma. The
first number is the character number to change from, and the second is the
number to change to. For example, two lines, the first reading
"65,66" and the second reading "66,65", will swap the
glyphs for A and B. Anything after a # or ; is a comment. The numbers used
relate to the source file, before any subset is extracted.
- --width
- Alter the character cell width in the target font. This doesn't scale
characters; it's Procrustean, so glyphs are either packed with whitespace
or cropped.
- --height
- Alter the character cell height in the target font.
- --bold=RANGE
- Makes characters bold by drawing them twice. Note that if no --width
option is supplied, this will make the target font one pixel wider than
the source font.
- --centre=RANGE
- If the character cell is being made larger or smaller, aligns character
cells by their centres rather than by their top left-hand corners. The
spelling --center is also recognised. --double=RANGE Doubles each
row in the source character. This should be used with the --height option
to increase the number of character rows, otherwise only the top half of
each character will be used.
- --flip=RANGE
- Mirror characters left/right. --repeat=RANGE When increasing the
size with --height or --width, repeat the last character row and column
into new rows/columns, rather than leaving them blank. This may help to
keep line graphic characters joined up. When combined with --centre,
characters will be expanded at all four edges if necessary.
- --scale=RANGE
- If the character cell is being made larger or smaller, attempts to scale
the characters to fit. This will probably look awful unless the new size
is an exact multiple of the old size, or unless you tidy the characters by
hand afterwards.
- --thin=RANGE
- Makes characters thin by reducing vertical lines wider than one
pixel.
- --psf1
- Forces output to be in PSF1 format.
- --psf2
- Forces output to be in PSF2 format.
If a codepage and --first / --last are both specified, the --first
/ --last apply to the subset of characters extracted by the codepage.
Similarly all character ranges on --bold, --thin etc. apply to the extracted
subset.
John Elliott <seasip.webmaster@gmail.com>.
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