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IVERSION.ICN
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1992-11-26
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1KB
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48 lines
############################################################################
#
# File: iversion.icn
#
# Subject: Program to show icode version
#
# Author: Ralph E. Griswold
#
# Date: September 2, 1991
#
###########################################################################
#
# This program reports the version of Icon icode files whose names
# are supplied, one name per line, from standard input.
#
# The method is necessarily somewhat heuristic and may not work on
# all systems and for very old icode versions.
#
############################################################################
procedure main()
local name, file, icode, okay
while name := read() do {
writes(name, ": ")
file := open(name,"u") | {
write("cannot open")
next
}
okay := &null
while icode := reads(file,30000) do # enough for most UNIX headers
icode ? {
while tab(upto('I') + 1) do {
if any('5678') then {
write(tab(upto('\0')))
okay := 1
break
}
}
}
if /okay then write("no version; may not be icode file")
close(file)
}
end