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############################################################################
#
# File: imltogif.icn
#
# Subject: Program to convert image strings to GIF files
#
# Author: Ralph E. Griswold
#
# Date: May 23, 1996
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# This program converts a list of image strings given in standard input
# to corresponding GIF images.
#
############################################################################
#
# The options supported are:
#
# -n s sets prefix for image file names to s, default "image"
# -c i number of columns for serial numbers in file names;
# default 4
# -f i first number, default 1
# -p treats image string as a pattern and fills a square
# window of its maximum dimension
#
############################################################################
#
# Requires: Version 9 graphics
#
############################################################################
#
# Links: imageseq, imutils, numbers, options, wopen
#
############################################################################
link imageseq
link imutils
link numbers
link options
link wopen
procedure main(args)
local count, ims, image, w, h, s, opts, pattern, prefix
count := 0
opts := options(args, "n:c+f+p")
/opts["c"] := 4
seq_init(opts)
pattern := opts["p"]
while ims := read() do {
count +:= 1
w := imswidth(ims)
h := imsheight(ims)
if (w | h) = 0 then {
write(&errout, "line ", count, ": bad image string")
next
}
if \pattern then w := h := max(w,h)
image := WOpen("canvas=hidden", "size=" || w || "," || h) | {
write(&errout, "line ", count, ": cannot open window")
next
}
if \pattern then {
WAttrib(image, "fillstyle=opaquepatterned")
Pattern(image, ims)
FillRectangle(image)
}
else DrawImage(image, 0, 0, ims) | {
write(&errout, "line ", count, ": cannot draw image")
WClose(image)
next
}
save_image(image)
WClose(image)
}
end
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