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authorEuAndreh <eu@euandre.org>2023-04-05 16:14:00 -0300
committerEuAndreh <eu@euandre.org>2023-04-05 16:14:00 -0300
commit24e24b49fb6375189cfa527a113eb965087a293a (patch)
treefc75f8267a22f6473432ee6b07c4013561c303dc /v2/src/bin/html
parentv2: Recove h[2-6] anchor link and icon (diff)
downloadeuandre.org-24e24b49fb6375189cfa527a113eb965087a293a.tar.gz
euandre.org-24e24b49fb6375189cfa527a113eb965087a293a.tar.xz
v2: Support Atom feeds and collection translations
Diffstat (limited to 'v2/src/bin/html')
-rwxr-xr-xv2/src/bin/html219
1 files changed, 219 insertions, 0 deletions
diff --git a/v2/src/bin/html b/v2/src/bin/html
new file mode 100755
index 0000000..7e6809c
--- /dev/null
+++ b/v2/src/bin/html
@@ -0,0 +1,219 @@
+#!/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
+. "${FILENAME%.md}.conf"
+
+#
+# Utility functions
+#
+
+SEEN_SLUGS="$(mkstemp)"
+slugify_once() {
+ SLUG="$(printf '%s' "$1" | slugify)${2:+-$2}"
+ if grep -q "^$SLUG$" "$SEEN_SLUGS"; then
+ N="${2:-0}"
+ N=$((N + 1))
+ slugify_once "$1" "$N"
+ else
+ printf '%s\n' "$SLUG" >> "$SEEN_SLUGS"
+ printf '%s' "$SLUG"
+ fi
+}
+
+INDENT=' '
+markdown_to_html() {
+ md2html | awk -vINDENT="$INDENT" '
+ BEGIN {
+ in_block = 0
+ }
+
+ {
+ if (in_block == 0) {
+ printf "%s", INDENT
+ }
+ print
+ }
+
+ /^<\/code><\/pre>$/ {
+ in_block = 0
+ }
+
+ /^<pre><code/ {
+ in_block = 1
+ }
+ '
+}
+
+extract_plaintext_snippets() {
+ SNIPPETS="${FILENAME%.md}.snippets"
+ printf '' > "$SNIPPETS"
+ F="$(mkstemp)"
+ cat > "$F"
+ (
+ IFS=''
+ BLOCK_NUMBER=0
+ IN_BLOCK=
+ while read -r line; do
+ if [ "$line" = '</code></pre>' ]; then
+ IN_BLOCK=
+ fi
+
+ if [ -n "$IN_BLOCK" ]; then
+ printf '%s\n' "$line" | htmlesc -d >> "$OUT"
+ fi
+
+ if printf '%s' "$line" | grep -q "^$INDENT<pre><code"; then
+ IN_BLOCK=1
+ OUT="${FILENAME%.md}.html.$BLOCK_NUMBER.txt"
+ BLOCK_NUMBER=$((BLOCK_NUMBER + 1))
+ printf '%s\n' "$line" |
+ sed "s|^\($INDENT<pre><code.*>\)\(.*\)$|\2|" |
+ htmlesc -d > "$OUT"
+ printf '%s\n' "$OUT" >> "$SNIPPETS"
+ fi
+ done < "$F"
+
+ BLOCK_NUMBER=0
+ while read -r line; do
+ printf '%s\n' "$line"
+
+ if [ "$line" = '</code></pre>' ]; then
+ printf '%s<p class="plaintext-link"><a href="%s">plaintext</a></p>\n' \
+ "$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 "</tbody></table>%s\n", $0
+ next
+ }
+
+ match($0, /^( +<pre><code.*>)(.*)$/, a) {
+ printf "%s<table rules=columns class=\"code-block\"><tbody>", a[1]
+
+ n = 1
+ block_count++
+ printf "<tr><td class=\"line-number\"><a id=\"B%s-L%s\" href=\"#B%s-L%s\">%s</a></td><td class=\"code-line\">%s</td></tr>\n", block_count, n, block_count, n, n, a[2]
+ in_block = 1
+ next
+ }
+
+ in_block == 1 {
+ n++
+ printf "<tr><td class=\"line-number\"><a id=\"B%s-L%s\" href=\"#B%s-L%s\">%s</a></td><td class=\"code-line\">%s</td></tr>\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 "^$INDENT<h[2-6]>"; then
+ printf '%s\n' "$line"
+ continue
+ fi
+ LVL="$(printf '%s' "$line" | sed "s|^$INDENT<h\(.\)>.*|\1|")"
+ HEADING="$(printf '%s' "$line" | sed "s|^$INDENT<h.>\(.*\)</h.>$|\1|")"
+ SLUG="$(slugify_once "$HEADING")"
+ printf '%s<h%s class="header-anchor" id="%s">%s<a href="#%s" aria-hidden="true"><img class="svg-icon" src="%s" /></a></h%s>\n' \
+ "$INDENT" \
+ "$LVL" \
+ "$SLUG" \
+ "$HEADING" \
+ "$SLUG" \
+ "${icon_link_url:?}" \
+ "$LVL"
+ done
+ )
+}
+
+emit_body() {
+ < "${FILENAME%.md}.content" \
+ markdown_to_html |
+ extract_plaintext_snippets |
+ add_line_numbers |
+ add_headings_anchors
+}
+
+envsubst < src/lib/preamble.html
+emit_body | tee "${FILENAME%.md}.htmlbody"
+envsubst < src/lib/postamble.html