Script to add & remove LaTeX \documentclass options. Run "./texoption.sh"

for usage information.

diff --git a/Doc/texoption.sh b/Doc/texoption.sh
new file mode 100755 (executable)
index 0000000..b90dab8
--- /dev/null
+++ b/Doc/texoption.sh
@@ -0,0 +1,95 @@
+#! /bin/sh
+#
+#  Script to convert LaTeX2e documents to & from having a \documentclass{}
+#  option.
+
+VERBOSE=false
+SETOPTION=true
+FILES=`echo ???.tex`
+
+usage() {
+    exec >&2
+    echo "usage:       $0 [-d] [-v] option [files...]"
+    echo
+    echo "\t-d  disable option, if present"
+    echo "\t-v  tell which files are being edited, and how"
+    echo
+    echo "\tBy default, files... will be '???.tex'."
+    echo "\tThis will match each of the Python manuals."
+    echo
+    exit 2
+}
+
+editing() {
+    # tell the user what we're doing
+    if $VERBOSE ; then
+       echo $1 $FILE...
+    fi
+}
+
+addoption() {
+    # add an option not already present
+    editing "adding to"
+    (sed 's/^\(\\documentclass[[].*\)]/\1,'$OPTION']/
+s/^\\documentclass{/\\documentclass['$OPTION']{/' $FILE >temp-$$ \
+     && mv temp-$$ $FILE) || exit $?
+}
+
+remoption() {
+    # remove an option currently on
+    editing "removing from"
+    (sed 's/^\(\\documentclass[[].*\),'$OPTION'\([],]\)/\1\2/
+s/^\\documentclass[[]'$OPTION']/\\documentclass{/
+s/^\\documentclass[[]'$OPTION',/\\documentclass[/' $FILE >temp-$$ \
+     && mv temp-$$ $FILE) || exit $?
+}
+
+chkoption() {
+    # return true iff the option is already on
+    egrep '^\\documentclass[[]([A-Za-z0-9]*,)*'$OPTION'[],]' $FILE >/dev/null
+    return $?
+}
+
+# parse the command line...
+while [ "$#" -gt 0 ] ; do
+    case "$1" in
+       -d)
+           SETOPTION=false
+           shift
+           ;;
+       -v)
+           VERBOSE=true
+           shift
+           ;;
+       -*)
+           usage
+           ;;
+       *)
+           break;
+           ;;
+    esac
+done
+if [ -z "$1" ] ; then
+    usage
+fi
+
+# setup variables
+OPTION="$1"
+shift
+FILES=${1:+$*}
+if [ "$FILES" = '' ] ; then
+    FILES=`echo ???.tex`
+fi
+
+# check each file and do the work as required
+for FILE in $FILES ; do
+    if chkoption ; then
+       if $SETOPTION ; then
+           :
+       else
+           remoption
+       fi
+    elif $SETOPTION ; then
+       addoption
+    fi
+done