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############################################################################
#
# File: iheader.icn
#
# Subject: Program to list Icon program library headers
#
# Author: Ralph E. Griswold
#
# Date: June 14, 1994
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# This program lists the headers of Icon programs whose file names are
# given on the command line. It complains if the header does not start
# correctly but otherwise does not check the syntax of what follows.
#
############################################################################
global input
procedure main(args)
local file, line, bar
bar := repl("#", 76)
every file := !args do {
write(file, ":")
input := open(file) | {
write("*** cannot open file")
close(\input)
next
}
line := read(input) | {
write("*** empty file")
close(\input)
next
}
if line ~== bar then {
write("*** invalid first line")
close(\input)
next
}
while line := read(input) do {
if line == bar then {
close(input)
break
}
else write(line)
}
}
end
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