#!/bin/bash

# The post-receive hook receives, on standard input, a series of lines
# of the form:
#
# <old-value> SP <new-value> SP <ref-name> LF
#
# describing ref updates that have just occurred.  In the case of this
# repository, only updates to refs/heads/master are expected, and only
# such updates should result in automatic website updates.

TOP_DIR=/www/gcc

exec >> "$TOP_DIR/updatelog" 2>&1

export QMAILHOST=gcc.gnu.org

tmp=$(mktemp)
cat > "$tmp"

# Send commit emails.  Appropriate config values should be set in the
# git repository for this.
/sourceware/libre/infra/bin/post-receive-email < "$tmp"

# Update web page checkouts, if applicable.
while read old_value new_value ref_name; do
    if [ "$ref_name" != "refs/heads/master" ]; then
	continue
    fi
    unset GIT_DIR
    unset GIT_WORK_TREE
    cd "$TOP_DIR/wwwdocs-checkout"
    git pull --quiet
    # $TOP_DIR/bin, $TOP_DIR/cgi-bin and $TOP_DIR/htdocs-preformatted
    # should be symlinks into wwwdocs-checkout.
    git diff --name-only "$old_value..$new_value" | while read file; do
	case "$file" in
	    (htdocs/*)
		;;
	    (*)
		continue
		;;
	esac
	dir="${file%/*}"
	if ! [ -d "$TOP_DIR/$dir" ]; then
	    mkdir "$TOP_DIR/$dir"
	    chmod 2775 "$TOP_DIR/$dir"
	fi
	if [ -f "$file" ]; then
	    /www/gcc/bin/preprocess "${file#htdocs/}"
	fi
    done
done < "$tmp"

rm "$tmp"