--- /dev/null
+#!/bin/bash
+
+## assemble-all-pages -- generate a set of HTML pages with variable parts
+# for emailselfdefense.fsf.org
+
+## Synopsis: assemble-all-pages
+
+## Description
+
+# Each page is built from a template and one or several includes, as usual;
+# in addition, several versions of a page can be built from a single
+# template which contains all the variable parts, by deleting irrelevant
+# text.
+
+# The templates have inclusion markers (similar to SSI directives, except
+# for the lack of "#") to indicate where the constant parts are to be
+# inserted, and deletion markers to identify the borders of each deletion
+# and indicate which page(s) the text between those borders belongs to.
+
+# The script processes all the templates in the working directory and the
+# pages are created in the parent directory.
+
+# Ideally, any modifications should be done to the templates or includes,
+# not to the final pages.
+
+# Templates: confirmation.t.html
+# index.t.html (contains variable parts for mac and windows)
+# infographic.t.html
+# next_steps.t.html
+
+# Includes: footer.html
+# head.html
+# javascript.html
+# translist.html
+
+## Graphic-user-interface howto
+
+# - Place the script in the same directory as the templates.
+# - Display this directory in the file browser (do not just unfold the parent
+# directory) and double-click on the script.
+
+# And if anything goes wrong, you can do a git reset, right? ;-)
+
+# ===========================================================================
+
+set -e
+set -o pipefail
+
+function close_term () {
+ exit $1
+}
+
+# Create temporary files.
+names=$(mktemp -t aap.XXXXXX) || close_term 1
+list=$(mktemp -t aap.XXXXXX) || close_term 1
+before=$(mktemp -t aap.XXXXXX) || close_term 1
+after=$(mktemp -t aap.XXXXXX) || close_term 1
+trap 'rm -f "$names" "$list" "$before" "$after"' EXIT
+
+# List all the templates in the working directory.
+if ls *.t.html > $names 2>/dev/null; then
+ sed -i 's,\.t\.html$,,' $names
+else
+ echo "*** There is no template in this directory." && close_term 1
+fi
+
+## Add the includes to the templates.
+
+while read name; do
+ # Make sure there is a blank line before the first include, otherwise
+ # it will not be added properly.
+ sed '1i\\n' $name.t.html > ../$name.html
+ # List the includes.
+ grep '^<!-- include virtual="' ../$name.html |
+ sed 's%^.*include virtual="\([^"]\+\).*$%\1%' > $list
+ # Add the includes.
+ while read include; do
+ sed "1,/^<!-- include virtual=\"$include\"/!d" ../$name.html > $before
+ sed "1,/^<!-- include virtual=\"$include\"/d" ../$name.html > $after
+ if [ -f "$include" ]; then
+ cat $before $include $after > ../$name.html
+ else
+ echo "$include is missing." && close_term 1
+ fi
+ sed -i "/^<!-- include virtual=\"$include\"/d" ../$name.html
+ sed -i '1{N;N;s/^\n*//}' ../$name.html
+ done < $list
+done < $names
+
+## Create mac.html and windows.html from index.html.
+
+cp ../index.html ../mac.html
+cp ../index.html ../windows.html
+# add them to the list of page names.
+echo 'mac' >> $names
+echo 'windows' >> $names
+
+## Remove the irrelevant parts.
+
+while read name ; do
+ # Find out which deletions apply.
+ grep '^<!-- START DELETION' ../$name.html |
+ grep -v "$name" > $list || true
+ sed -i 's%^<!-- START DELETION \([0-9][0-9]\),.*$%\1%' $list
+ # Delete.
+ while read deletion; do
+ sed -i "/^<!-- START DELETION $deletion/, \
+ /^<!-- END DELETION $deletion/d" ../$name.html
+ done < $list
+ # Remove the markers and any extra blank lines at the end of the page.
+ sed -i '/^<!-- [A-Z]* DELETION/d' ../$name.html
+ sed -i ':a /^\n*$/ {$d; N; ba}' ../$name.html
+done < $names
+
+close_term 0