#!/bin/sh set -eu usage() { cat <<-'EOF' Usage: html FILENAME html -h EOF } help() { cat <<-'EOF' Options: -h, --help show this message FILENAME the name of the input file .md file Process the FILENAME, and generate a full HTML page. Examples: Generate the HTML for a pastebin: $ html src/a-paste.md > src/a-paste.html EOF } for f in "$@"; do case "$f" in --) break ;; --help) usage help exit ;; *) ;; esac done while getopts 'h' flag; do case "$flag" in h) usage help exit ;; *) usage >&2 exit 2 ;; esac done shift $((OPTIND - 1)) . src/lib.sh FILENAME="${1:-}" eval "$(assert_arg "$FILENAME" 'FILENAME')" # shellcheck source=/dev/null . "${FILENAME%.md}.conf" # # Utility functions # INDENT=' ' markdown_to_html() { md2html | awk -vINDENT="$INDENT" ' BEGIN { in_block = 0 } { if (in_block == 0) { printf "%s", INDENT } print } /^<\/code><\/pre>$/ { in_block = 0 } /^
"$SNIPPETS"
F="$(mkstemp)"
cat > "$F"
(
IFS=''
BLOCK_NUMBER=0
IN_BLOCK=
while read -r line; do
if [ "$line" = '
' ]; then
IN_BLOCK=
fi
if [ -n "$IN_BLOCK" ]; then
printf '%s\n' "$line" | htmlesc -d >> "$OUT"
fi
if printf '%s' "$line" | grep -q "^$INDENT\)\(.*\)$|\2|" |
htmlesc -d > "$OUT"
printf '%s\n' "$OUT" >> "$SNIPPETS"
fi
done < "$F"
BLOCK_NUMBER=0
while read -r line; do
printf '%s\n' "$line"
if [ "$line" = '
' ]; then
printf '%s\n' \
"$INDENT" \
"$(basename "${url_part:?}").$BLOCK_NUMBER.txt"
BLOCK_NUMBER=$((BLOCK_NUMBER + 1))
fi
done < "$F"
)
}
add_line_numbers() {
awk '
/^<\/code><\/pre>$/ {
in_block = 0
printf "%s\n", $0
next
}
match($0, /^( +)(.*)$/, a) { printf "%s ", a[1] n = 1 block_count++ printf "
\n", block_count, n, block_count, n, n, a[2] in_block = 1 next } in_block == 1 { n++ printf " %s %s \n", block_count, n, block_count, n, n, $0 next } { print } ' } add_headings_anchors() { ( IFS='' while read -r line; do if ! printf '%s' "$line" | grep -q "^$INDENT %s %s "; then printf '%s\n' "$line" continue fi LVL="$(printf '%s' "$line" | sed "s|^$INDENT .*|\1|")" HEADING="$(printf '%s' "$line" | sed "s|^$INDENT \(.*\) $|\1|")" SLUG="$(slugify "$HEADING")" printf '%s%s \n' \ "$INDENT" \ "$LVL" \ "$SLUG" \ "$HEADING" \ "$SLUG" \ "${icon_link_url:?}" \ "$LVL" done ) } warn_duplicate_ids() { F="$(mkstemp)" tee "$F" { grep "^$INDENT.*&2 < "$F" rm "$F" } emit_body() { < "${FILENAME%.md}.content" \ markdown_to_html | extract_plaintext_snippets | add_line_numbers | add_headings_anchors | warn_duplicate_ids } envsubst < src/lib/preamble.html emit_body | tee "${FILENAME%.md}.htmlbody" envsubst < src/lib/postamble.html