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############################################################################
#
# File: strpsgml.icn
#
# Subject: Program to strip/translate SGML tags
#
# Author: Richard L. Goerwitz
#
# Date: November 19, 1997
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# Version: 1.9
#
############################################################################
#
# Strip or perform simple translation on SGML <>-style tags. Usage
# is as follows:
#
# strpsgml [-f translation-file] [left-delimiter [right-delimiter]]
#
# The default left-delimiter is <, the default right delimiter is >.
# If no translation file is specified, the program acts as a strip-
# per, simply removing material between the delimiters. Strpsgml
# takes its input from stdin, writing to stdout.
#
# The format of the translation file is:
#
# code initialization completion
#
# A tab or colon separates the fields. If you want to use a tab or colon
# as part of the text (and not as a separator), place a backslash before
# it. The completion field is optional. There is not currently any way
# of specifying a completion field without an initialization field. Do
# not specify delimiters as part of code.
#
# Note that, if you are translating SGML code into font change or escape
# sequences, you may get unexpected results. This isn't strpsgml's
# fault. It's just a matter of how your terminal or WP operate. Some
# need to be "reminded" at the beginning of each line what mode or font
# is being used. Note also that stripsgml assumes < and > as delimiters.
# If you want to put a greater-than or less-than sign into your text,
# put a backslash before it. This will effectively "escape" the spe-
# cial meaning of those symbols. It is now possible to change the
# default delimiters, but the option has not been thoroughly tested.
#
############################################################################
#
# Links: scan, stripunb, readtbl
#
############################################################################
link scan
link stripunb
link readtbl
procedure main(a)
local usage, _arg, L, R, map_file, t, readtbl, line, stripunb, last_k
usage:=
"usage: stripsgml [-f map-file] [left-delimiter(s) [right-delimiter(s)]]"
L := '<'; R := '>'
while _arg := get(a) do {
if _arg == "-f" then {
map_file := open(get(a)) |
stop("stripsgml: can't open map_file\n",usage)
t := readtbl(map_file)
}
else {
L := _arg
R := cset(get(a))
}
}
every line := !&input do
write(stripunb(L,R,line,&null,&null,t)) # t is the map table
# last_k is the stack used in stripunb.icn
if *\last_k ~= 0 then
stop("Unexpected EOF encountered. Expecting ", pop(last_k), ".")
end
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