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| -rwxr-xr-x | ssg | 243 |
1 files changed, 243 insertions, 0 deletions
@@ -0,0 +1,243 @@ +#!/bin/sh -e +# +# https://rgz.ee/bin/ssg6 +# Copyright 2018-2019 Roman Zolotarev <hi@romanzolotarev.com> +# +# Permission to use, copy, modify, and/or distribute this software for any +# purpose with or without fee is hereby granted, provided that the above +# copyright notice and this permission notice appear in all copies. +# +# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +# + +main() { + test -n "$1" || usage + test -n "$2" || usage + test -n "$3" || usage + test -n "$4" || usage + test -d "$1" || no_dir "$1" + test -d "$2" || no_dir "$2" + + src=$(readlink_f "$1") + dst=$(readlink_f "$2") + + IGNORE=$( + if ! test -f "$src/.ssgignore"; then + printf ' ! -path "*/.*"' + return + fi + while read -r x; do + test -n "$x" || continue + printf ' ! -path "*/%s*"' "$x" + done <"$src/.ssgignore" + ) + + # files + + title="$3" + + h_file="$src/_header.html" + f_file="$src/_footer.html" + test -f "$f_file" && FOOTER=$(cat "$f_file") && export FOOTER + test -f "$h_file" && HEADER=$(cat "$h_file") && export HEADER + + list_dirs "$src" | + (cd "$src" && cpio -pdu "$dst") + + fs=$( + if test -f "$dst/.files"; then + list_affected_files "$src" "$dst/.files" + else + list_files "$1" + fi + ) + + if test -n "$fs"; then + echo "$fs" | tee "$dst/.files" + + if echo "$fs" | grep -q '\.md$'; then + if test -x "$(which lowdown 2>/dev/null)"; then + echo "$fs" | grep '\.md$' | + render_md_files_lowdown "$src" "$dst" "$title" + else + if test -x "$(which Markdown.pl 2>/dev/null)"; then + echo "$fs" | grep '\.md$' | + render_md_files_Markdown_pl "$src" "$dst" "$title" + else + echo "couldn't find lowdown nor Markdown.pl" + exit 3 + fi + fi + fi + + echo "$fs" | grep '\.html$' | + render_html_files "$src" "$dst" "$title" + + echo "$fs" | grep -Ev '\.md$|\.html$' | + (cd "$src" && cpio -pu "$dst") + fi + + printf '[ssg] ' >&2 + print_status 'file, ' 'files, ' "$fs" >&2 + + # sitemap + + base_url="$4" + date=$(date +%Y-%m-%d) + urls=$(list_pages "$src") + + test -n "$urls" && + render_sitemap "$urls" "$base_url" "$date" >"$dst/sitemap.xml" + + print_status 'url' 'urls' "$urls" >&2 + echo >&2 +} + +readlink_f() { + file="$1" + cd "$(dirname "$file")" + file=$(basename "$file") + while test -L "$file"; do + file=$(readlink "$file") + cd "$(dirname "$file")" + file=$(basename "$file") + done + dir=$(pwd -P) + echo "$dir/$file" +} + +print_status() { + test -z "$3" && printf 'no %s' "$2" && return + + echo "$3" | awk -v singular="$1" -v plural="$2" ' + END { + if (NR==1) printf NR " " singular + if (NR>1) printf NR " " plural + }' +} + +usage() { + echo "usage: ${0##*/} src dst title base_url" >&2 + exit 1 +} + +no_dir() { + echo "${0##*/}: $1: No such directory" >&2 + exit 2 +} + +list_dirs() { + cd "$1" && eval "find . -type d ! -name '.' ! -path '*/_*' $IGNORE" +} + +list_files() { + cd "$1" && eval "find . -type f ! -name '.' ! -path '*/_*' $IGNORE" +} + +list_dependant_files() { + e="\\( -name '*.html' -o -name '*.md' -o -name '*.css' -o -name '*.js' \\)" + cd "$1" && eval "find . -type f ! -name '.' ! -path '*/_*' $IGNORE $e" +} + +list_newer_files() { + cd "$1" && eval "find . -type f ! -name '.' $IGNORE -newer $2" +} + +has_partials() { + grep -qE '^./_.*\.html$|^./_.*\.js$|^./_.*\.css$' +} + +list_affected_files() { + fs=$(list_newer_files "$1" "$2") + + if echo "$fs" | has_partials; then + list_dependant_files "$1" + else + echo "$fs" + fi +} + +render_html_files() { + while read -r f; do + render_html_file "$3" <"$1/$f" >"$2/$f" + done +} + +render_md_files_lowdown() { + while read -r f; do + lowdown \ + --html-no-escapehtml \ + --html-no-skiphtml \ + --parse-no-metadata \ + --parse-no-autolink <"$1/$f" | + render_html_file "$3" \ + >"$2/${f%\.md}.html" + done +} + +render_md_files_Markdown_pl() { + while read -r f; do + Markdown.pl <"$1/$f" | + render_html_file "$3" \ + >"$2/${f%\.md}.html" + done +} + +render_html_file() { + # h/t Devin Teske + awk -v title="$1" ' + { body = body "\n" $0 } + END { + body = substr(body, 2) + if (body ~ /<\/?[Hh][Tt][Mm][Ll]/) { + print body + exit + } + if (match(body, /<[[:space:]]*[Hh]1(>|[[:space:]][^>]*>)/)) { + t = substr(body, RSTART + RLENGTH) + sub("<[[:space:]]*/[[:space:]]*[Hh]1.*", "", t) + gsub(/^[[:space:]]*|[[:space:]]$/, "", t) + if (t) title = t + } + n = split(ENVIRON["HEADER"], header, /\n/) + for (i = 1; i <= n; i++) { + if (match(tolower(header[i]), "<title></title>")) { + head = substr(header[i], 1, RSTART - 1) + tail = substr(header[i], RSTART + RLENGTH) + print head "<title>" title "</title>" tail + } else print header[i] + } + print body + print ENVIRON["FOOTER"] + }' +} + +list_pages() { + e="\\( -name '*.html' -o -name '*.md' \\)" + cd "$1" && eval "find . -type f ! -path '*/.*' ! -path '*/_*' $IGNORE $e" | + sed 's#^./##;s#.md$#.html#;s#/index.html$#/#' +} + +render_sitemap() { + urls="$1" + base_url="$2" + date="$3" + + echo '<?xml version="1.0" encoding="UTF-8"?>' + echo '<urlset' + echo 'xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"' + echo 'xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9' + echo 'http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd"' + echo 'xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">' + echo "$urls" | + sed -E 's#^(.*)$#<url><loc>'"$base_url"'/\1</loc><lastmod>'"$date"'</lastmod><priority>1.0</priority></url>#' + echo '</urlset>' +} + +main "$@" |