feat/whatever: cleanup

lib/metadata.sh

@@ -0,0 +1,98 @@
+parse_frontmatter() {
+    _fm_file="$1"
+    _fm_out="$KEWT_TMPDIR/fm_vals.txt"
+    : > "$_fm_out"
+    awk -v fm_out="$_fm_out" -f "$awk_dir/frontmatter.awk" "$_fm_file" > /dev/null
+    fm_title=""
+    fm_date=""
+    fm_draft=""
+    fm_description=""
+    fm_content_warning=""
+    fm_tags=""
+    while IFS='=' read -r _fk _fv; do
+        case "$_fk" in
+            title) fm_title="$_fv" ;;
+            date) fm_date="$_fv" ;;
+            draft) fm_draft="$_fv" ;;
+            description) fm_description="$_fv" ;;
+            content_warning) fm_content_warning="$_fv" ;;
+            tags) fm_tags="$_fv" ;;
+        esac
+    done < "$_fm_out"
+    rm -f "$_fm_out"
+}
+
+strip_markdown_text() {
+    printf '%s' "$1" | sed \
+        -e 's/\[//g' \
+        -e 's/\]//g' \
+        -e 's/!//g' \
+        -e 's/\*//g' \
+        -e 's/_//g' \
+        -e 's/`//g' \
+        -e 's/([^)]*)//g' \
+        -e 's/\\//g'
+}
+
+first_heading_from_markdown() {
+    grep -m 1 '^# ' "$1" | sed 's/^# *//; s/ *$//'
+}
+
+markdown_title_from_file() {
+    _title_file="$1"
+    _title_default="$2"
+
+    parse_frontmatter "$_title_file"
+    markdown_title="$fm_title"
+
+    if [ -z "$markdown_title" ]; then
+        markdown_title=$(first_heading_from_markdown "$_title_file")
+        if [ -n "$markdown_title" ]; then
+            markdown_title=$(strip_markdown_text "$markdown_title")
+        fi
+    fi
+
+    if [ -z "$markdown_title" ]; then
+        basename_no_ext=$(basename "$_title_file" .md)
+        if [ "$basename_no_ext" != "index" ] && [ "$basename_no_ext" != "404_gen" ]; then
+            markdown_title=$(echo "$basename_no_ext" | awk '{print toupper(substr($0,1,1)) substr($0,2)}')
+        else
+            markdown_title="$_title_default"
+        fi
+    fi
+}
+
+set_post_datetime() {
+    _raw_date="$1"
+    _fallback_name="$2"
+
+    if [ -n "$_raw_date" ]; then
+        post_date=$(echo "$_raw_date" | sed 's/^\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}\).*/\1/')
+        post_time=""
+        if echo "$_raw_date" | grep -q '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}[ T_-]\?[0-9]\{2\}[:\-][0-9]\{2\}'; then
+            post_time=$(echo "$_raw_date" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}[ T_-]\?\([0-9]\{2\}[:\-][0-9]\{2\}\).*/\1/' | tr '-' ':')
+        fi
+        return
+    fi
+
+    post_date=$(echo "$_fallback_name" | sed 's/^\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}\).*/\1/')
+    post_time="00:00"
+    if echo "$_fallback_name" | grep -q '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-[0-9]\{2\}[:\-][0-9]\{2\}'; then
+        post_time=$(echo "$_fallback_name" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-\([0-9]\{2\}[:\-][0-9]\{2\}\).*/\1/' | tr '-' ':')
+    fi
+}
+
+set_post_metadata() {
+    _post_file="$1"
+    _default_title="$2"
+    _basename_no_ext=$(basename "$_post_file" .md)
+
+    markdown_title_from_file "$_post_file" "$_default_title"
+    post_heading="$markdown_title"
+    set_post_datetime "$fm_date" "$_basename_no_ext"
+
+    post_slug=$(echo "$_basename_no_ext" | sed \
+        -e 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-[0-9]\{2\}[:\-][0-9]\{2\}//' \
+        -e 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}//' \
+        -e 's/^[_\-]//')
+}