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############################################################################
#
# File: weavutil.icn
#
# Subject: Procedures to support numerical weavings
#
# Author: Ralph E. Griswold
#
# Date: June 13, 1999
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# Links: expander, patutils, tables, tieutils
#
############################################################################
link expander
link patutils
link tables
link tieutils
$include "weavdefs.icn"
# PFL weaving parameters
record PflParams(P, T)
# Sequence-drafting database record
record sdb(table, name) # specification database
record ddb(table) # definition database
record edb(table) # expression database
record tdb(table) # tie-up database
# Weaving specification
record weaving(
name,
breadth,
length,
threading,
treadling,
shafts,
treadles,
palette,
colors,
warp_colors,
weft_colors,
tieup,
defns,
links,
comments
)
record draft(
name,
threading,
treadling,
warp_colors,
weft_colors,
shafts,
treadles,
palette,
colors,
tieup,
liftplan,
drawdown
)
procedure readpfd(input) # read PFD
local pfd
pfd := draft()
pfd.name := read(input) &
pfd.threading := read(input) &
pfd.treadling := read(input) &
pfd.warp_colors := read(input) &
pfd.weft_colors := read(input) &
pfd.palette := read(input) &
pfd.colors := read(input) &
pfd.shafts := read(input) &
pfd.treadles := read(input) &
pfd.tieup := read(input) | fail
pfd.liftplan := read(input) # may be missing
return pfd
end
procedure writepfd(output, pfd) #: write PFD
write(output, pfd.name)
write(output, pfd.threading)
write(output, pfd.treadling)
write(output, pfd.warp_colors)
write(output, pfd.weft_colors)
write(output, pfd.palette)
write(output, pfd.colors)
write(output, pfd.shafts)
write(output, pfd.treadles)
write(output, pfd.tieup)
if *\pfd.liftplan > 0 then write(pfd.liftplan) else write()
return
end
procedure expandpfd(pfd) #: expand PFD
pfd := copy(pfd)
pfd.threading := pfl2str(pfd.threading)
pfd.treadling := pfl2str(pfd.treadling)
pfd.warp_colors := pfl2str(pfd.warp_colors)
pfd.weft_colors := pfl2str(pfd.weft_colors)
pfd.warp_colors := Extend(pfd.warp_colors, *pfd.threading)
pfd.weft_colors := Extend(pfd.weft_colors, *pfd.treadling)
return pfd
end
# Write include file for seqdraft
procedure write_spec(name, spec, opt, sym) #: write weaving include file
local n, output
static bar
initial bar := repl("#", 72)
/opt := "w"
output := open(name, opt) | fail
write(output, "$define Reflect ", image(sym))
# Literals are output with image(). Other definitions are
# Icon experssions, enclosed in parentheses.
write(output, "$define Comments ", image(spec.comments))
write(output, "$define Name ", image(spec.name))
write(output, "$define Palette ", image(spec.palette))
write(output, "$define PDB ", image(spec.palette))
write(output, "$define Colors (", spec.colors, ")")
write(output, "$define WarpColors (", check(spec.warp_colors), ")")
write(output, "$define WeftColors (", check(spec.weft_colors), ")")
write(output, "$define Breadth (", spec.breadth, ")")
write(output, "$define Length (", spec.length, ")")
write(output, "$define Threading (", check(spec.threading), ")")
write(output, "$define Treadling (", check(spec.treadling), ")")
write(output, "$define Shafts (", spec.shafts, ")")
write(output, "$define Treadles (", spec.treadles, ")")
write(output, "$define Tieup ", image(spec.tieup))
every n := !keylist(spec.defns) do
write(output, "$define ", n, " ", spec.defns[n])
write(output, bar)
close(output)
return
end
procedure check(s) #: check for pattern form
if s[1] == "[" then s := "!pfl2str(" || image(s) || ")"
return s
end
procedure display()
write(&errout, "name=", name)
write(&errout, "threading=", threading)
write(&errout, "treadling=", treadling)
write(&errout, "warp colors=", warp_colors)
write(&errout, "weft colors=", weft_colors)
write(&errout, "tie up=", limage(tieup))
write(&errout, "palette=", palette)
return
end
procedure sympos(sym) #: position of symbol in symbol list
static mask
initial mask := Mask
return upto(sym, mask) # may fail
end
procedure possym(i) #: symbol in position i of symbol list
static mask
initial mask := Mask
return mask[i] # may fail
end
# Procedure to convert a tier to a list of productions
$define Different 2
procedure tier2prodl(tier, name)
local rows, row, count, unique, prodl, prod
unique := table()
rows := []
count := 0
every row := !tier.matrix do {
if /unique[row] then unique[row] := (count +:= 1)
put(rows, unique[row])
}
prod := name || "->"
every prod ||:= possym(!rows + Different)
prodl := [
"name:" || "t-" || name,
"comment: ex pfd2wpg " || &dateline,
"axiom:2",
"gener:1",
prod
]
unique := sort(unique, 4)
while row := get(unique) do
put(prodl, possym(get(unique) + Different) || "->" || row)
put(prodl, "end:")
return prodl
end
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