commit - /dev/null
commit + b77b250a6fbc0ecf95bf91dff9ec25f6a5c4260b
blob - /dev/null
blob + 042c10d5233cd0e9cb438930d675a1e979417de0 (mode 644)
--- /dev/null
+++ readme.md
+https://romanzolotarev.com/ssg/
blob - /dev/null
blob + a785d7f2fd619836522e66ce6d8d616c7fc05ed4 (mode 755)
--- /dev/null
+++ ssg.sh
+#!/bin/ksh -eu
+
+# https://romanzolotarev.com/ssg/
+# copyright 2018-2026 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.
+
+info() { echo "$@" >&2; }
+fail() { echo "$@" >&2 && exit 1; }
+usage() { fail 'usage: '"${0##*/}"' <src> <dst>'; }
+
+# exit if less than two arguments
+fail_no_args() { if test $# -ne 2; then usage; fi; }
+
+# exit if src directory not found
+fail_no_src() { if ! test -d "$1"; then fail "fail: $1 not found"; fi; }
+
+# return relative paths sorted
+sort_relative() { sed "s,$1/,," | sort; }
+
+# return sorted file hashes for directory
+hash_dir() {
+ dir="$1"
+ if ! test -d "$dir"; then return; fi
+ set -- find "$dir" -type f
+ while read -r line; do
+ if test -z "$line"; then continue; fi
+ set -f && for word in $line; do
+ if test -z "$word"; then continue; fi && set -- "$@" "$word"
+ done && set +f
+ done
+ "$@" -print0 | xargs -r -0 -n256 -P "$NCPU" sha256 -r | sort_relative "$dir"
+}
+
+# return find expression to exclude paths
+not_path() {
+ while read -r x; do
+ case "$x" in
+ */) echo "! -path $x*" ;;
+ *) echo "! -path $x" ;;
+ esac
+ done
+}
+
+# return all .ssg.ignore files
+find_ignore_files() { find "$SRC" -type f -name "$SSG_IGNORE"; }
+
+# return ignored paths from all .ssg.ignore files
+ignored_paths() {
+ while read -r f; do d="$(dirname "$f")" && sed "s,^,${d}/," "$f"; done
+}
+
+# return src directory hash, excluding paths from .ssg.ignore
+hash_src() { find_ignore_files | ignored_paths | not_path | hash_dir "$SRC"; }
+
+# return find expression to exclude src and dst hash files
+exclude_hash_files() { echo "! -name $SSG_DST ! -name $SSG_SRC"; }
+
+# return dst directory hash, excluding hash files
+hash_dst() { exclude_hash_files | hash_dir "$DST"; }
+
+mustache() {
+ d=0
+ s=-1
+ while read -r line; do
+ o=""
+ rest="$line"
+ while :; do
+ case "$rest" in
+ *'{{'*)
+ before="${rest%%\{\{*}"
+ rest="${rest#*\{\{}"
+ tag="${rest%%\}\}*}"
+ rest="${rest#*\}\}}"
+ if test $s -lt 0; then o="${o}${before}"; fi
+ case "$tag" in
+ '#'*)
+ d=$((d + 1))
+ if test $s -lt 0 -a -z "$(printenv "${tag#\#}")"; then s=$d; fi
+ ;;
+ '/'*) if test $s -eq $d; then s=-1; fi && d=$((d - 1)) ;;
+ '^'*)
+ d=$((d + 1))
+ if test $s -lt 0 -a -n "$(printenv "${tag#^}")"; then s=$d; fi
+ ;;
+ *) if test $s -lt 0; then o="${o}$(printenv "$tag")"; fi ;;
+ esac
+ ;;
+ *) if test $s -lt 0; then o="${o}${rest}"; fi && break ;;
+ esac
+ done
+ if test $s -lt 0 -o -n "$o"; then printf '%s\n' "$o"; fi
+ done
+}
+
+# returns page rendered with its template
+render_page() {
+ # strip newlines and escape ampersands and slashes
+ esc() { tr -d '\n' | sed 's/[&/]/\\&/g'; }
+ # replace newlines with spaces and extract title from the first <h1> tag
+ get_title() { tr '\n' ' ' |
+ sed -n 's/^[^<]*<[Hh]1[^>]*>\([^<]*\)<\/[Hh]1[^>]*>.*/\1/p'; }
+ content="$(cat)"
+ # use src dir name as site name
+ site="$(basename "$SRC" | esc)"
+ title="$(printf '%s' "$content" | get_title | esc)"
+ # replace {{title}} and {{site}} tags with values from variables,
+ # replace {{content}} tag with page content.
+ # use truthy tag to show title only when it's found in content, for example:
+ # {{#title}}{{title}: {{/title}}
+ export content site title && mustache <"$1"
+}
+
+# return html converted from markdown
+md_to_html() {
+ lowdown \
+ --out-no-smarty \
+ --html-no-escapehtml \
+ --html-no-skiphtml \
+ --parse-no-autolink \
+ --parse-no-metadata
+}
+
+# write zip unless its gz variant found in src
+gz() {
+ if test -f "$SRC/$1.gz"; then return; fi
+ gzip -n -9 <"$DST/$1" >"$DST/$1.gz"
+}
+
+# return nearest template for page
+find_template() {
+ dir=$(cd "$(dirname "$SRC/$1")" && pwd)
+ root=$(dirname "$(cd "$SRC" && pwd)")
+ while test "$dir" != "$root"; do
+ t="$dir/$SSG_TEMPLATE"
+ if test -f "$t"; then echo "${t#"$SRC/"}" && return; fi
+ dir=$(dirname "$dir")
+ done
+}
+
+# return relative paths to files if they found in directory
+files_in() {
+ while read -r f; do if test -f "$1/$f"; then echo "$f"; fi; done
+}
+
+# write and zip file to dst
+generate_file() {
+ mkdir -p "$(dirname "$DST/$1")"
+ cp "$SRC/$1" "$DST/$1"
+ info "file $1"
+ gz "$1"
+ info "file $1 > $1.gz"
+}
+
+# write file to dst
+generate_copy() {
+ mkdir -p "$(dirname "$DST/$1")"
+ cp "$SRC/$1" "$DST/$1"
+ info "copy $1"
+}
+
+# execute script and write zips for output files to dst
+generate_sh() {
+ command ksh -- "$SRC/$1" "$SRC" "$DST" |
+ while read -r f; do
+ if test -z "$f"; then continue; fi
+ if test -f "$SRC/$f"; then fail "fail: $1 collides with $f"; fi
+ info "sh $1 > $f"
+ gz "$f"
+ info "sh $1 > $f.gz"
+ done
+}
+
+# return true page has <html> tag
+has_html_tag() { grep -qi '<html[^>]*>' "$SRC/$1"; }
+
+# write html page and zip to dst
+generate_html() {
+ mkdir -p "$(dirname "$DST/$1")"
+
+ # return content as is for pages with <html> tag
+ if has_html_tag "$1"; then
+ cp "$SRC/$1" "$DST/$1"
+ info "html $1"
+ gz "$1"
+ info "html $1 > $1.gz"
+ return
+ fi
+
+ # find template
+ t=$(find_template "$1")
+
+ if test -f "$SRC/$t"; then
+ # return page rendered with template
+ render_page "$SRC/$t" <"$SRC/$1" >"$DST/$1"
+ info "html $1, $t > $1"
+ gz "$1"
+ info "html $1, $t > $1.gz"
+ else
+ # ...or return content as is if template not found
+ cp "$SRC/$1" "$DST/$1"
+ info "html $1"
+ gz "$1"
+ info "html $1 > $1.gz"
+ fi
+}
+
+# write markdown page and zip to dst
+generate_md() {
+ mkdir -p "$(dirname "$DST/$1")"
+ t=$(find_template "$1")
+ h="${1%.md}.html"
+ if test -f "$SRC/$h"; then fail "fail: $1 collides with $h"; fi
+ if test -f "$SRC/$t"; then
+ md_to_html <"$SRC/$1" | render_page "$SRC/$t" >"$DST/$h"
+ info "md $1, $t > $h"
+ gz "$h"
+ info "md $1, $t > $h.gz"
+ else
+ md_to_html <"$SRC/$1" >"$DST/$h"
+ info "md $1 > $h"
+ gz "$h"
+ info "md $1 > $h.gz"
+ fi
+}
+
+# return diff of two values
+diff_lines() {
+ fifo=$(mktemp -u) || fail 'fail: diff lines: can not mktemp'
+ mkfifo "$fifo" || fail 'fail: diff lines: can not mkfifo'
+ (printf '%s\n' "$2" >"$fifo") &
+ printf '%s\n' "$1" | diff - "$fifo" || :
+ rm -f "$fifo"
+}
+
+# return second column and sort
+cut_sort() { cut -d' ' -f2 | sort; }
+
+# return pages with their templates, excluding pages with <html> tag
+pages_with_templates() {
+ while read -r p; do
+ if has_html_tag "$p"; then continue; fi &&
+ printf '%s\t%s\n' "$(find_template "$p")" "$p"
+ done
+}
+
+# return pages related to template
+pages_by_templates() {
+ grep "$SSG_TEMPLATE" | cut_sort |
+ while read -r t; do echo "$1" | grep "$t" | cut -f2; done
+}
+
+# return file expected in dst directory
+plan() {
+ while read -r k f; do
+ case "$k" in
+ copy) echo "$f" ;;
+ file) echo "$f" && echo "$f.gz" ;;
+ html) echo "$f" && echo "$f.gz" ;;
+ md) echo "${f%.md}.html" && echo "${f%.md}.html.gz" ;;
+ sh) command ksh -- "$SRC/$f" |
+ while read -r f; do
+ if test -z "$f"; then continue; fi && echo "$f" && echo "$f.gz"
+ done ;;
+ *) continue ;;
+ esac
+ done
+}
+
+# make dst directory and return src hash as is
+mkdir_select_all() { mkdir -p "$DST" && echo "$1" | cut_sort; }
+
+# remove dst directory and return src hash as is
+rmdir_select_all() { rm -rf "$DST" && echo "$1" | cut_sort; }
+
+# remove files in dst
+rm_files() { while read -r f; do rm "$DST/$f" && info "rm $f"; done; }
+
+# remove empty directories in dst
+rm_empty_dirs() {
+ find "$DST" -type d -mindepth 1 | while read -r d; do
+ if test -z "$(find "$d" -mindepth 1 -type f)"; then echo "$d"; fi
+ done | sort -r | while read -r e; do
+ rmdir "$e" && info "rmdir ${e#"$DST"/}/"
+ done
+}
+
+# return files with their kind prepended
+prepend_kind() {
+ while read -r f; do
+ if test -z "$f"; then continue; fi
+ case "$f" in
+ *.html) k='html' ;;
+ *.md) k='md' ;;
+ *.ssg.ignore) k='ignore' ;;
+ *.ssg.*.sh | *.ssg.sh) k='sh' ;;
+ *.ssg.template) k='template' ;;
+ *.png | *.jpg | *.gif | *.mp4 | *.zip | *.gz) k='copy' ;;
+ *) k='file' ;;
+ esac
+ echo "$k $f"
+ done
+}
+
+# return right side of diff
+select_right() { sed -n 's/^> \([^\ ]*\).*/\1/p'; }
+
+# remove files and directories not present in plan from dst
+clean_up_dst() {
+ dst_plan=$(echo "$1" | cut_sort | prepend_kind | plan | sort)
+ dst_files=$(echo "$2" | sort_relative "$DST" | cut_sort)
+ diff_lines "$dst_plan" "$dst_files" | select_right | files_in "$DST" |
+ rm_files
+ rm_empty_dirs
+}
+
+# return sorted list of unique updated files and pages for updated template
+select_updated() {
+ src_updated=$(echo "$2" | select_right | cut_sort)
+ pages=$(echo "$1" | grep -E '.html|.md' | cut_sort | pages_with_templates)
+ {
+ echo "$src_updated"
+ echo "$src_updated" | pages_by_templates "$pages"
+ } | sort -u
+}
+
+is_empty() { test -z "$1"; }
+is_dir() { test -d "$1"; }
+is_ssg_dst() { test -f "$DST/$SSG_DST"; }
+is_ssg_src() { test -f "$DST/$SSG_SRC"; }
+is_matching_ssg_dst() {
+ test "$(sha256 <"$DST/$SSG_DST")" = "$(echo "$1" | sha256)"
+}
+diff_src() { diff_lines "$(cat "$DST/$SSG_SRC")" "$1"; }
+
+# return files to be updated
+select_src_files() {
+ if is_empty "$1"; then return; fi
+ if ! is_dir "$DST"; then mkdir_select_all "$1" && return; fi
+ if ! is_ssg_src || ! is_ssg_dst; then rmdir_select_all "$1" && return; fi
+ dst_hash=$(hash_dst)
+ if ! is_matching_ssg_dst "$dst_hash"; then rmdir_select_all "$1" && return; fi
+ src_hash_diff=$(diff_src "$1")
+ if is_empty "$src_hash_diff"; then return; fi
+ clean_up_dst "$src_hash" "$dst_hash"
+ select_updated "$src_hash" "$src_hash_diff"
+}
+
+# write files in dst directory
+generate() {
+ while read -r k f; do
+ case "$k" in
+ copy) generate_copy "$f" ;;
+ file) generate_file "$f" ;;
+ html) generate_html "$f" ;;
+ md) generate_md "$f" ;;
+ sh) generate_sh "$f" ;;
+ template) info "template $f" ;;
+ ignore) info "ignore $f" ;;
+ *) info "unknown $f" ;;
+ esac
+ done
+}
+
+# write src and dst hash files to dst directory
+write_hashes() {
+ if ! test -d "$DST"; then return; fi
+ echo "$1" >"$DST/$SSG_SRC"
+ echo "$2" | tee "$DST/$SSG_DST" | sha256 >&2
+}
+
+main() {
+ fail_no_args "${@}"
+ fail_no_src "${@}"
+
+ SRC=$(cd "$1" && pwd)
+ DST="$2"
+ SSG_IGNORE='.ssg.ignore'
+ SSG_TEMPLATE='.ssg.template'
+ SSG_SRC='.ssg.src'
+ SSG_DST='.ssg.dst'
+ NCPU=$(sysctl -n hw.ncpu 2>/dev/null || getconf NPROCESSORS_ONLN)
+
+ src_hash=$(hash_src)
+ select_src_files "$src_hash" | prepend_kind | generate
+ write_hashes "$src_hash" "$(hash_dst)"
+}
+
+main "${@}"
blob - /dev/null
blob + 81b21fe0ed41b084f56c25688252b3e98b8f95b8 (mode 755)
--- /dev/null
+++ ssg.test.sh
+#!/bin/ksh -e
+
+ok_count=0
+ok_expected=24
+
+plan() {
+ echo "$ok_expected..$ok_count"
+ test "$ok_expected" -eq "$ok_count" || { echo 'failed' && exit 1; }
+ echo 'passed' && exit 0
+}
+
+bench() {
+ i="$1" && shift
+ exec 3>&1
+ {
+ time (
+ n=1 && printf . >&3
+ while [ "$n" -le "$i" ]; do
+ "$@" >/dev/null 2>&1 && n=$((n + 1))
+ printf . >&3
+ done
+ printf '\n' >&3
+ )
+ } 2>&1 | grep 'real' | cut -f2 | cut -d' ' -f5
+ exec 3>&-
+}
+
+ok() { echo "ok: $*" && ok_count=$((ok_count + 1)); }
+not_ok() { echo "not ok: $*" && plan; }
+
+not_ok_diff_n() {
+ fifo=$(mktemp -u) || exit 1
+ mkfifo "$fifo" || exit 1
+ (printf "%s" "$2" >"$fifo") &
+ printf "\n%s\n" "$(cat)" | diff - "$fifo" || not_ok "$1"
+ rm -f "$fifo"
+}
+
+not_ok_diff() {
+ fifo=$(mktemp -u) || exit 1
+ mkfifo "$fifo" || exit 1
+ (echo "$2" >"$fifo") &
+ diff - "$fifo" || not_ok "$1"
+ rm -f "$fifo"
+}
+
+not_ok_find() {
+ find "$1" -type f | sort | sed "s,$1/,," | not_ok_diff_n "$2" "$3"
+}
+
+base=$(dirname "$0")
+cmd="$base/ssg.sh"
+test -x "$cmd" || { echo "$cmd not found" >&2 && exit 1; }
+
+basic_case() {
+ dir=$(mktemp -d)
+ src="$dir/src" && dst="$dir/dst"
+ mkdir "$src" "$src/.git"
+ echo '# h1' >"$src/markdown.md"
+ echo '<h1>h1</h1>' >"$src/html1.html"
+ echo '<html>' >"$src/html2.html"
+ echo '<title>{{title}}:{{site}}</title>{{content}}' >"$src/.ssg.template"
+ echo '.git/' >"$src/.ssg.ignore"
+ echo >"$src/.git/index"
+ echo >"$src/main.css"
+ echo >"$src/logo.png"
+ # shellcheck disable=2016
+ echo '
+if test -z "$1"; then echo "x.txt" && exit; fi
+echo . >"$2/x.txt" && echo "x.txt"
+' >"$src/.ssg.sh"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "basic_case" '
+ignore .ssg.ignore
+sh .ssg.sh > x.txt
+sh .ssg.sh > x.txt.gz
+template .ssg.template
+html html1.html, .ssg.template > html1.html
+html html1.html, .ssg.template > html1.html.gz
+html html2.html
+html html2.html > html2.html.gz
+copy logo.png
+file main.css
+file main.css > main.css.gz
+md markdown.md, .ssg.template > markdown.html
+md markdown.md, .ssg.template > markdown.html.gz
+56fd1f7d1f2bcbe8b452073cc657b27a4eee72cab0e531de679788e5744af652
+'
+ rm -rf "$dir"
+}
+
+t() {
+ dir=$(mktemp -d) && src="$dir/src" && dst="$dir/dst"
+ case "$1" in
+
+ fail_no_args)
+ if "$cmd" "$src" 2>/dev/null; then
+ exit_code="$?" && test "$exit_code" -eq 1 ||
+ not_ok "$1: expected: exit code 1, actual: exit code $exit_code"
+ fi
+ test -d "$dst" && not_ok "$1"
+ ;;
+
+ fail_no_src)
+ if "$cmd" "$src" "$dst" 2>/dev/null; then
+ exit_code="$?" && test "$exit_code" -eq 1 ||
+ not_ok "$1: expected: exit code 1, actual: exit code $exit_code"
+ fi
+ test -d "$dst" && not_ok "$1"
+ ;;
+
+ select_src_files_empty_src)
+ mkdir "$src" "$dst" && "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1" '
+01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b
+'
+ not_ok_find "$dst" "$1: dst not empty" '
+.ssg.dst
+.ssg.src
+'
+ ;;
+
+ select_src_files_ssg_ignore)
+ mkdir "$src" "$src/a" "$src/a/b" "$src/a/c"
+ echo '1.txt' >"$src/.ssg.ignore"
+ echo '2.txt
+c/' >"$src/a/.ssg.ignore"
+ echo '3.txt' >"$src/a/b/.ssg.ignore"
+ echo >"$src/1.txt"
+ echo >"$src/a/2.txt"
+ echo >"$src/a/b/3.txt"
+ echo >"$src/a/c/4.txt"
+ echo >"$src/a/c/5.txt"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1" '
+ignore .ssg.ignore
+ignore a/.ssg.ignore
+ignore a/b/.ssg.ignore
+01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+'
+ ;;
+
+ select_src_files_no_dst)
+ mkdir "$src" && echo >"$src/t.png"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1" '
+copy t.png
+9db7b136bc6fdd9c51009ce2f88c69ff64060c3f3ff540a9199f37d2aa404eaa
+'
+ not_ok_find "$dst" "$1: dst has t.png" '
+.ssg.dst
+.ssg.src
+t.png
+'
+ ;;
+
+ select_src_files_no_ssg_dst_ssg_src)
+ mkdir "$src" "$dst" && echo >"$src/t.png"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+copy t.png
+9db7b136bc6fdd9c51009ce2f88c69ff64060c3f3ff540a9199f37d2aa404eaa
+'
+ rm "$dst/.ssg.src"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+copy t.png
+9db7b136bc6fdd9c51009ce2f88c69ff64060c3f3ff540a9199f37d2aa404eaa
+'
+ rm "$dst/.ssg.dst"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: third run" '
+copy t.png
+9db7b136bc6fdd9c51009ce2f88c69ff64060c3f3ff540a9199f37d2aa404eaa
+'
+ ;;
+
+ select_src_files_no_dst_ssg_dst_match)
+ mkdir "$src" "$dst" && echo >"$src/t.png"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+copy t.png
+9db7b136bc6fdd9c51009ce2f88c69ff64060c3f3ff540a9199f37d2aa404eaa
+'
+ echo x >>"$dst/.ssg.dst"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+copy t.png
+9db7b136bc6fdd9c51009ce2f88c69ff64060c3f3ff540a9199f37d2aa404eaa
+'
+ ;;
+
+ select_src_files_no_src_diff)
+ mkdir "$src" "$dst" && echo >"$src/t.png"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+copy t.png
+9db7b136bc6fdd9c51009ce2f88c69ff64060c3f3ff540a9199f37d2aa404eaa
+'
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+9db7b136bc6fdd9c51009ce2f88c69ff64060c3f3ff540a9199f37d2aa404eaa
+'
+ ;;
+
+ select_src_files_clean_dst)
+ mkdir "$src" && echo >"$src/t.png"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+copy t.png
+9db7b136bc6fdd9c51009ce2f88c69ff64060c3f3ff540a9199f37d2aa404eaa
+'
+ echo >"$dst/trash_file"
+ mkdir "$dst/trash_dir"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+copy t.png
+9db7b136bc6fdd9c51009ce2f88c69ff64060c3f3ff540a9199f37d2aa404eaa
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+t.png
+'
+ ;;
+
+ select_src_files_clean_dst_dir)
+ mkdir "$src" "$src/dir"
+ echo >"$src/a.png"
+ echo >"$src/dir/b.png"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+copy a.png
+copy dir/b.png
+6e0b941542f81e1b299a21444d0efe2fa224a4220e67df9c37cc34a2c6f01b13
+'
+ rm "$src/dir/b.png"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+rm dir/b.png
+rmdir dir/
+e86615a87eeeae97fb6302dd5013109f0ccfb7336f164a39457e684c30bae90e
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+a.png
+'
+ ;;
+
+ select_updated)
+ mkdir "$src" "$dst"
+ echo '<title></title>' >"$src/.ssg.template"
+ echo '<h1>h1</h1>' >"$src/html1.html"
+ echo '<html>' >"$src/html2.html"
+ echo '# h1' >"$src/markdown.md"
+ echo >"$src/t.png"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+template .ssg.template
+html html1.html, .ssg.template > html1.html
+html html1.html, .ssg.template > html1.html.gz
+html html2.html
+html html2.html > html2.html.gz
+md markdown.md, .ssg.template > markdown.html
+md markdown.md, .ssg.template > markdown.html.gz
+copy t.png
+5538af7d3a6abc2aad8609b32f32154ea5d23109e2630399fecd0755ebde544f
+'
+ expected_dst='
+.ssg.dst
+.ssg.src
+html1.html
+html1.html.gz
+html2.html
+html2.html.gz
+markdown.html
+markdown.html.gz
+t.png
+'
+ not_ok_find "$dst" "$1" "$expected_dst"
+
+ echo 'x' >"$src/.ssg.template"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+template .ssg.template
+html html1.html, .ssg.template > html1.html
+html html1.html, .ssg.template > html1.html.gz
+md markdown.md, .ssg.template > markdown.html
+md markdown.md, .ssg.template > markdown.html.gz
+c3f5b69d372ad66211a052e7b572715941522aae7779eff22cf7becc1c8d18e8
+'
+ not_ok_find "$dst" "$1" "$expected_dst"
+ ;;
+
+ generate_copy)
+ mkdir "$src" "$dst" && echo 'png' >"$src/t.png"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+copy t.png
+5265fde36fa46d08d2bc48d0f413d41c166ee966a4f94b5fd7ad0c23e1bb92d4
+'
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+5265fde36fa46d08d2bc48d0f413d41c166ee966a4f94b5fd7ad0c23e1bb92d4
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+t.png
+'
+ cat "$dst/t.png" | not_ok_diff "$1" 'png'
+ ;;
+
+ generate_file)
+ mkdir "$src" "$dst" && echo 'txt' >"$src/t.txt"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+file t.txt
+file t.txt > t.txt.gz
+482d02d3fdd5ca854ffc9370f9cf3d4efa5bb640713c90dcf5c9800d5acf6812
+'
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+482d02d3fdd5ca854ffc9370f9cf3d4efa5bb640713c90dcf5c9800d5acf6812
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+t.txt
+t.txt.gz
+'
+ cat "$dst/t.txt" | not_ok_diff "$1" 'txt'
+ hexdump -C "$dst/t.txt.gz" | not_ok_diff_n "$1" '
+00000000 1f 8b 08 00 00 00 00 00 02 03 2b a9 28 e1 02 00 |..........+.(...|
+00000010 d3 84 7d 34 04 00 00 00 |..}4....|
+00000018
+'
+ ;;
+
+ generate_html)
+ mkdir "$src" "$dst" && echo '<html>' >"$src/h.html"
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+html h.html
+html h.html > h.html.gz
+d167244df661961bfe78dd5e1b2c8c563cd588f3583a6438f2af3207401fb10c
+'
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+d167244df661961bfe78dd5e1b2c8c563cd588f3583a6438f2af3207401fb10c
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+h.html
+h.html.gz
+'
+ cat "$dst/h.html" | not_ok_diff "$1" '<html>'
+ hexdump -C "$dst/h.html.gz" | not_ok_diff_n "$1" '
+00000000 1f 8b 08 00 00 00 00 00 02 03 b3 c9 28 c9 cd b1 |............(...|
+00000010 e3 02 00 99 34 cb 33 07 00 00 00 |....4.3....|
+0000001b
+'
+ ;;
+
+ generate_html_with_template)
+ mkdir "$src" "$dst"
+ echo '<h1>h1</h1>' >"$src/h.html"
+ echo '<title>{{title}}~{{site}}</title>{{content}}' >"$src/.ssg.template"
+
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+template .ssg.template
+html h.html, .ssg.template > h.html
+html h.html, .ssg.template > h.html.gz
+7cbe380c112e232fa4b618b1837d11c47abdfd01863ae484fdb411ade0f43af1
+'
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+7cbe380c112e232fa4b618b1837d11c47abdfd01863ae484fdb411ade0f43af1
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+h.html
+h.html.gz
+'
+
+ cat "$dst/h.html" | not_ok_diff "$1" '<title>h1~src</title><h1>h1</h1>'
+ hexdump -C "$dst/h.html.gz" | not_ok_diff_n "$1" '
+00000000 1f 8b 08 00 00 00 00 00 02 03 b3 29 c9 2c c9 49 |...........).,.I|
+00000010 b5 cb 30 ac 2b 2e 4a b6 d1 87 f0 6c 32 0c 81 22 |..0.+.J....l2.."|
+00000020 36 fa 40 8a 0b 00 1e b5 6d 4c 21 00 00 00 |6.@.....mL!...|
+0000002e
+'
+ ;;
+
+ generate_html_with_template_no_title)
+ mkdir "$src" "$dst"
+ echo '<h1>h1</h1>' >"$src/h.html"
+ echo 'p' >"$src/p.html"
+ echo '<title>{{#title}}{{title}}: {{/title}}{{site}}</title>{{content}}' >"$src/.ssg.template"
+
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+template .ssg.template
+html h.html, .ssg.template > h.html
+html h.html, .ssg.template > h.html.gz
+html p.html, .ssg.template > p.html
+html p.html, .ssg.template > p.html.gz
+816fcd36b20ed6114d6e13c15182ae33186676aa091558dce61f66c8e43c8b62
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+h.html
+h.html.gz
+p.html
+p.html.gz
+'
+
+ cat "$dst/h.html" | not_ok_diff "$1" '<title>h1: src</title><h1>h1</h1>'
+ cat "$dst/p.html" | not_ok_diff "$1" '<title>src</title>p'
+ ;;
+
+
+ generate_html_with_template_in_dir)
+ mkdir "$src" "$src/dir"
+ echo >"$src/h1.html"
+ echo >"$src/dir/h2.html"
+ echo '/' >"$src/.ssg.template"
+ echo '/dir' >"$src/dir/.ssg.template"
+
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+template .ssg.template
+template dir/.ssg.template
+html dir/h2.html, dir/.ssg.template > dir/h2.html
+html dir/h2.html, dir/.ssg.template > dir/h2.html.gz
+html h1.html, .ssg.template > h1.html
+html h1.html, .ssg.template > h1.html.gz
+8602b68b3b149d967e43d9c4948099d4cbbc3edd2f0a5e46f01c37af78ba8506
+'
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+8602b68b3b149d967e43d9c4948099d4cbbc3edd2f0a5e46f01c37af78ba8506
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+dir/h2.html
+dir/h2.html.gz
+h1.html
+h1.html.gz
+'
+
+ cat "$dst/h1.html" | not_ok_diff "$1" '/'
+ cat "$dst/dir/h2.html" | not_ok_diff "$1" '/dir'
+ ;;
+
+ generate_html_template_not_found)
+ mkdir "$src" "$dst"
+ echo '<h1>h1</h1>' >"$src/h.html"
+
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+html h.html
+html h.html > h.html.gz
+255d20dac0c5587bd5499827d3528db1433d60c04168ca2d9b2427de0f9a440e
+'
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+255d20dac0c5587bd5499827d3528db1433d60c04168ca2d9b2427de0f9a440e
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+h.html
+h.html.gz
+'
+
+ cat "$dst/h.html" | not_ok_diff "$1" '<h1>h1</h1>'
+ hexdump -C "$dst/h.html.gz" | not_ok_diff_n "$1" '
+00000000 1f 8b 08 00 00 00 00 00 02 03 b3 c9 30 b4 cb 30 |............0..0|
+00000010 b4 d1 07 52 5c 00 12 f0 3b a6 0c 00 00 00 |...R\...;.....|
+0000001e
+'
+ ;;
+
+ generate_md_with_collision)
+ mkdir "$src" "$dst"
+ echo >"$src/h.md"
+ echo >"$src/h.html"
+
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+html h.html
+html h.html > h.html.gz
+fail: h.md collides with h.html
+'
+ ;;
+
+ generate_md_with_template)
+ mkdir "$src" "$dst"
+ echo '# h1' >"$src/h.md"
+ echo '<title>{{title}}~{{site}}</title>{{content}}' >"$src/.ssg.template"
+
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+template .ssg.template
+md h.md, .ssg.template > h.html
+md h.md, .ssg.template > h.html.gz
+916917ec6944394281526a5ba9276e39bdff828105b965188c168c847065be63
+'
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+916917ec6944394281526a5ba9276e39bdff828105b965188c168c847065be63
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+h.html
+h.html.gz
+'
+
+ cat "$dst/h.html" |
+ not_ok_diff "$1" '<title>h1~src</title><h1 id="h1">h1</h1>'
+ hexdump -C "$dst/h.html.gz" | not_ok_diff_n "$1" '
+00000000 1f 8b 08 00 00 00 00 00 02 03 b3 29 c9 2c c9 49 |...........).,.I|
+00000010 b5 cb 30 ac 2b 2e 4a b6 d1 87 f0 6c 32 0c 15 32 |..0.+.J....l2..2|
+00000020 53 6c 95 32 0c 95 80 32 36 fa 19 86 76 5c 00 0b |Sl.2...26...v\..|
+00000030 26 40 c1 29 00 00 00 |&@.)...|
+00000037
+'
+ ;;
+
+ generate_md_template_not_found)
+ mkdir "$src" "$dst"
+ echo '# h1' >"$src/h.md"
+
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+md h.md > h.html
+md h.md > h.html.gz
+2f33f1e74aa7d6f33502cc842f2001a7759da120f0fb0f84a6295c1fe81d0319
+'
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+2f33f1e74aa7d6f33502cc842f2001a7759da120f0fb0f84a6295c1fe81d0319
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+h.html
+h.html.gz
+'
+
+ cat "$dst/h.html" | not_ok_diff "$1" '<h1 id="h1">h1</h1>'
+ hexdump -C "$dst/h.html.gz" | not_ok_diff_n "$1" '
+00000000 1f 8b 08 00 00 00 00 00 02 03 b3 c9 30 54 c8 4c |............0T.L|
+00000010 b1 55 ca 30 54 b2 cb 30 b4 d1 cf 30 b4 e3 02 00 |.U.0T..0...0....|
+00000020 0e 5d 6f 38 14 00 00 00 |.]o8....|
+00000028
+'
+ ;;
+
+ generate_sh)
+ mkdir "$src"
+ # shellcheck disable=2016
+ echo '
+if test -z "$1"; then echo "x.txt" && exit; fi
+echo . >"$2/x.txt" && echo "x.txt"
+' >"$src/.ssg.sh"
+
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+sh .ssg.sh > x.txt
+sh .ssg.sh > x.txt.gz
+99c418b0dcd6c6c2124e87b4857b415bcf0a12ba7c7540d8ac53fe73c2046a29
+'
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: second run" '
+99c418b0dcd6c6c2124e87b4857b415bcf0a12ba7c7540d8ac53fe73c2046a29
+'
+ not_ok_find "$dst" "$1" '
+.ssg.dst
+.ssg.src
+x.txt
+x.txt.gz
+'
+
+ cat "$dst/x.txt" | not_ok_diff "$1" '.'
+ hexdump -C "$dst/x.txt.gz" | not_ok_diff_n "$1" '
+00000000 1f 8b 08 00 00 00 00 00 02 03 d3 e3 02 00 cd f2 |................|
+00000010 0b aa 02 00 00 00 |......|
+00000016
+'
+ ;;
+
+ generate_sh_with_collision)
+ mkdir "$src"
+ echo >"$src/x.txt"
+ # shellcheck disable=2016
+ echo '
+if test -z "$1"; then echo "x.txt" && exit; fi
+echo . >"$2/x.txt" && echo "x.txt"
+' >"$src/.ssg.sh"
+
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+fail: .ssg.sh collides with x.txt
+'
+ ;;
+
+ write_hashes)
+ mkdir "$src"
+ echo >"$src/x.txt"
+ # shellcheck disable=2016
+ "$cmd" "$src" "$dst" 2>&1 | not_ok_diff_n "$1: first run" '
+file x.txt
+file x.txt > x.txt.gz
+a12d7b67f235edb37cfcf1bdd5a50a2e0486e1612eda28210b816eaff424a100
+'
+ cat "$dst/.ssg.src" | not_ok_diff_n "$1" '
+01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b x.txt
+'
+ cat "$dst/.ssg.dst" | not_ok_diff_n "$1" '
+01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b x.txt
+34d5848c995803cfd00c2f7f02d807e2069b51ffca60a40f05d2d7229ef13b69 x.txt.gz
+'
+ ;;
+
+ *) not_ok "$1: not such test" ;;
+
+ esac
+
+ ok "$1" && rm -rf "$dir"
+}
+
+# tests
+
+t fail_no_args
+t fail_no_src
+t select_src_files_empty_src
+t select_src_files_ssg_ignore
+t select_src_files_no_dst
+t select_src_files_no_ssg_dst_ssg_src
+t select_src_files_no_dst_ssg_dst_match
+t select_src_files_no_src_diff
+t select_src_files_clean_dst
+t select_src_files_clean_dst_dir
+t select_updated
+t generate_copy
+t generate_file
+t generate_html
+t generate_html_with_template
+t generate_html_with_template_no_title
+t generate_html_with_template_in_dir
+t generate_html_template_not_found
+t generate_md_with_collision
+t generate_md_with_template
+t generate_md_template_not_found
+t generate_sh
+t generate_sh_with_collision
+t write_hashes
+
+basic_case && bench 4 basic_case
+
+plan
