2011-03-30 13:53:33 +00:00
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.ds Bf b \" default format; use i for icons and faces
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.ds Bn /tmp/btroff\n($$ \" temporary file, reused on each macro call
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2013-02-16 22:56:17 +00:00
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.ds Bp /sys/lib/btroff \" bitmap filter
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2011-03-30 13:53:33 +00:00
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.de BM
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.if \\n(.$=1 .ds Bf \\$1
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.if \\n(.$=2 \{. \" copy request, perhaps diverted
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.ie '\\n(.z'' .Bm \\$1 \\$2
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.el \!.BM \\$1 \\$2\}
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.if \\n(.$=4 \{. \" size request, numerator only
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.nr Bz \\$2
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.sy \\*(Bp -s -\\*(Bf -d\\n(Bz \\$1 | awk '{\
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print ".nr \\$3 " $1; \
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print ".nr \\$4 " $2; \
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exit }' >\\*(Bn
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.so \\*(Bn
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.sy /bin/rm -f \\*(Bn \}
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.if \\n(.$=5 \{. \" size request, numerator and denominator
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.nr Bz \\$2
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.sy \\*(Bp -s -\\*(Bf -d\\n(Bz \\$1 | awk '{\
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print ".nr \\$4 " $1 "/\\$3"; \
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print ".nr \\$5 " $2 "/\\$3"; \
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exit }' >\\*(Bn
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.so \\*(Bn
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.sy /bin/rm -f \\*(Bn \}
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..
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.de Bm \" copy request, for real
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.if \\n(.P>0 \{. \" maybe
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.fl
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.ie '\\$2'0' \{. \" ask driver to read the bits
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.br
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\\X'Bitmap \\$1'
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.sp -1 \}
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.el \{. \" use the Bitmap font
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.sy \\*(Bp -\\*(Bf -d\\$2 \\$1 >\\*(Bn
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.fp 9 BM Bitmap
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.ft 9
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.ps \\$2
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.cf \\*(Bn \" next line is for pm to consume
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\!n0 1
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.ft
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.ps
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.sy /bin/rm -f \\*(Bn \}
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.fl \}
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..
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