feat: modular building and search

lib/builder.sh

@@ -0,0 +1,707 @@
+needs_rebuild() {
+    src_file="$1"
+    out_file="$2"
+    [ ! -f "$out_file" ] && return 0
+    [ "$src_file" -nt "$out_file" ] && return 0
+    [ -f "./site.conf" ] && [ "./site.conf" -nt "$out_file" ] && return 0
+    [ -f "$src/site.conf" ] && [ "$src/site.conf" -nt "$out_file" ] && return 0
+    [ -f "$template" ] && [ "$template" -nt "$out_file" ] && return 0
+    [ -f "$script_dir/styles/$style.css" ] && [ "$script_dir/styles/$style.css" -nt "$out_file" ] && return 0
+    return 1
+}
+
+build_site() {
+echo "Building site from '$src' to '$out'..."
+
+eval "find \"$src\" \( $IGNORE_ARGS \) -prune -o -type d -print" | sort | while read -r dir; do
+    rel_dir="${dir#"$src"}"
+    rel_dir="${rel_dir#/}"
+    [ -z "$rel_dir" ] && rel_dir="."
+    out_dir="$out/$rel_dir"
+    mkdir -p "$out_dir"
+
+    if [ -f "$dir/styles.css" ]; then
+        if needs_rebuild "$dir/styles.css" "$out_dir/styles.css"; then
+            copy_style_with_resolved_vars "$dir/styles.css" "$out_dir/styles.css"
+        fi
+    elif [ -f "$dir/style.css" ]; then
+        if needs_rebuild "$dir/style.css" "$out_dir/styles.css"; then
+            copy_style_with_resolved_vars "$dir/style.css" "$out_dir/styles.css"
+        fi
+    fi
+
+    [ "$dir_indexes" != "true" ] && continue
+
+    has_custom_index="false"
+    has_list="false"
+    if [ -f "$dir/index.md" ]; then
+        has_custom_index="true"
+        if grep -q '^[[:space:]]*{{LIST}}[[:space:]]*$' "$dir/index.md" 2>/dev/null; then
+            has_list="true"
+        fi
+    fi
+
+    if [ "$has_custom_index" = "false" ] || [ "$has_list" = "true" ]; then
+        is_posts_dir="false"
+        if [ -n "$posts_dir" ] && { [ "$rel_dir" = "$posts_dir" ] || [ "./$rel_dir" = "$posts_dir" ]; }; then
+            is_posts_dir="true"
+        fi
+        if [ "$single_file_index" = "true" ] && [ "$is_posts_dir" = "false" ] && [ "$has_list" = "false" ]; then
+            md_count=$(find "$dir" ! -name "$(basename "$dir")" -prune -name "*.md" | wc -l)
+            if [ "$md_count" -eq 1 ]; then
+                md_file=$(find "$dir" ! -name "$(basename "$dir")" -prune -name "*.md")
+                is_home="false"; [ "$dir" = "$src" ] && is_home="true"
+                target_url="/$rel_dir/index.html"
+                [ "$rel_dir" = "." ] && target_url="/index.html"
+                if needs_rebuild "$md_file" "$out_dir/index.html"; then
+                    parse_frontmatter "$md_file"
+                    if [ -n "$fm_content_warning" ]; then
+                        content_out_file="$out_dir/content.html"
+                        content_rel_url="/$rel_dir/content.html"
+                        [ "$rel_dir" = "." ] && content_rel_url="/content.html"
+                        
+                        is_cw_content_page="true"
+                        render_markdown "$md_file" "$is_home" "$target_url" > "$content_out_file"
+                        is_cw_content_page="false"
+                        
+                        generate_content_warning_page "$fm_title" "$fm_content_warning" "$content_rel_url" "$target_url" "$out_dir/index.html" "false"
+                    else
+                        render_markdown "$md_file" "$is_home" "$target_url" > "$out_dir/index.html"
+                    fi
+                fi
+                continue
+            fi
+        fi
+
+        temp_index="$KEWT_TMPDIR/index.md"
+        temp_list="$KEWT_TMPDIR/list.md"
+        : > "$temp_list"
+
+        if [ "$has_custom_index" = "false" ]; then
+            display_dir="${rel_dir#.}"
+            [ -z "$display_dir" ] && display_dir="/"
+            echo "# Index of $display_dir" > "$temp_index"
+            echo "" >> "$temp_index"
+        fi
+
+
+        sort_args=""
+        # If this is the posts dir reverse
+        if [ "$rel_dir" = "$posts_dir" ] || [ "./$rel_dir" = "$posts_dir" ]; then
+            sort_args="-r"
+        fi
+
+        temp_entries="$KEWT_TMPDIR/entries_$$.txt"
+        : > "$temp_entries"
+
+        find "$dir" ! -name "$(basename "$dir")" -prune ! -name ".*" -print | while read -r entry; do
+            name="${entry##*/}"
+            case "$name" in
+                template.html|site.conf|style.css|index.md) continue ;;
+            esac
+            if [ -d "$entry" ]; then
+                echo "${name}|- [${name}/](${name}/index.html)" >> "$temp_entries"
+            elif [ "${entry%.md}" != "$entry" ]; then
+                label="${name%.md}"
+
+                # Parse frontmatter for date/title/draft
+                parse_frontmatter "$entry"
+                [ "$fm_draft" = "true" ] && continue
+
+                # Try to get first heading
+                post_h="$fm_title"
+                if [ -z "$post_h" ]; then
+                    post_h=$(grep -m 1 '^# ' "$entry" | sed 's/^# *//')
+                    if [ -n "$post_h" ]; then
+                        post_h=$(echo "$post_h" | sed -e 's/\[//g' -e 's/\]//g' -e 's/!//g' -e 's/\*//g' -e 's/_//g' -e 's/`//g' -e 's/([^)]*)//g' | sed 's/\\//g')
+                    fi
+                fi
+
+                is_post_entry="false"
+                if [ "$rel_dir" = "$posts_dir" ] || [ "./$rel_dir" = "$posts_dir" ]; then
+                    is_post_entry="true"
+                fi
+
+                if [ -n "$post_h" ]; then
+                    if [ "$is_post_entry" = "true" ]; then
+                        # Use frontmatter date if available, else parse from filename
+                        if [ -n "$fm_date" ]; then
+                            p_date=$(echo "$fm_date" | sed 's/^\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}\).*/\1/')
+                            p_time=""
+                            if echo "$fm_date" | grep -q '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}[ T_-]\?[0-9]\{2\}[:\-][0-9]\{2\}'; then
+                                p_time=$(echo "$fm_date" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}[ T_-]\?\([0-9]\{2\}[:\-][0-9]\{2\}\).*/\1/' | tr '-' ':')
+                            fi
+                        else
+                            p_date=$(echo "${name%.md}" | sed 's/^\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}\).*/\1/')
+                            p_time="00:00"
+                            if echo "${name%.md}" | grep -q '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-[0-9]\{2\}[:\-][0-9]\{2\}'; then
+                                 p_time=$(echo "${name%.md}" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-\([0-9]\{2\}[:\-][0-9]\{2\}\).*/\1/' | tr '-' ':')
+                            fi
+                        fi
+                        if [ -n "$p_time" ]; then
+                            label="$post_h - $p_date $p_time"
+                        else
+                            label="$post_h - $p_date"
+                        fi
+                    else
+                        label="$post_h"
+                    fi
+                elif [ "$is_post_entry" = "true" ]; then
+                    # No heading; use date
+                    if [ -n "$fm_date" ]; then
+                        p_date=$(echo "$fm_date" | sed 's/^\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}\).*/\1/')
+                        p_time=""
+                        if echo "$fm_date" | grep -q '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}[ T_-]\?[0-9]\{2\}[:\-][0-9]\{2\}'; then
+                            p_time=$(echo "$fm_date" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}[ T_-]\?\([0-9]\{2\}[:\-][0-9]\{2\}\).*/\1/' | tr '-' ':')
+                        fi
+                        if [ -n "$p_time" ]; then
+                            label="$p_date $p_time"
+                        else
+                            label="$p_date"
+                        fi
+                    else
+                        p_date=$(echo "${name%.md}" | sed 's/^\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}\).*/\1/')
+                        p_time="00:00"
+                        if echo "${name%.md}" | grep -q '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-[0-9]\{2\}[:\-][0-9]\{2\}'; then
+                             p_time=$(echo "${name%.md}" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-\([0-9]\{2\}[:\-][0-9]\{2\}\).*/\1/' | tr '-' ':')
+                        fi
+                        label="$p_date $p_time"
+                    fi
+                fi
+                if [ "$is_post_entry" = "true" ]; then
+                    sort_key="${p_date} ${p_time}"
+                else
+                    sort_key="$name"
+                fi
+                echo "${sort_key}|- [$label](${name%.md}.html)|$name|${name%.md}.html" >> "$temp_entries"
+            else
+                echo "${name}|- [$name]($name)|$name|$name" >> "$temp_entries"
+            fi
+        done
+        
+        if [ "$is_posts_dir" = "true" ]; then
+            LC_ALL=C sort $sort_args "$temp_entries" > "$KEWT_TMPDIR/sorted_entries_$$.txt"
+            cut -d'|' -f2 "$KEWT_TMPDIR/sorted_entries_$$.txt" >> "$temp_list"
+            mkdir -p "$KEWT_TMPDIR/prevnext"
+            awk -F'|' '
+            {
+               name[NR] = $3
+               url[NR] = $4
+            }
+            END {
+               for(i=1; i<=NR; i++) {
+                  prev_str = ""
+                  next_str = ""
+                  if(i > 1) {
+                     next_str = "[Next >](" url[i-1] ")"
+                  }
+                  if(i < NR) {
+                     prev_str = "[< Previous](" url[i+1] ")"
+                  }
+                  if (prev_str != "" || next_str != "") {
+                      out = "'"$KEWT_TMPDIR"'/prevnext/" name[i]
+                      printf "%s|%s\n", prev_str, next_str > out
+                  }
+               }
+            }
+            ' "$KEWT_TMPDIR/sorted_entries_$$.txt"
+            rm -f "$KEWT_TMPDIR/sorted_entries_$$.txt"
+        else
+            LC_ALL=C sort $sort_args "$temp_entries" | cut -d'|' -f2 >> "$temp_list"
+        fi
+        rm -f "$temp_entries"
+        
+        is_home="false"; [ "$dir" = "$src" ] && is_home="true"
+        target_url="/$rel_dir/index.html"
+        [ "$rel_dir" = "." ] && target_url="/index.html"
+
+        num_items=$(wc -l < "$temp_list")
+        if [ "$is_posts_dir" = "true" ] && [ -n "$posts_per_page" ] && [ "$posts_per_page" -gt 0 ] && [ "$num_items" -gt "$posts_per_page" ]; then
+            num_pages=$(( (num_items + posts_per_page - 1) / posts_per_page ))
+            for p in $(seq 1 $num_pages); do
+                chunk_list="$KEWT_TMPDIR/chunk.md"
+                start_line=$(( (p - 1) * posts_per_page + 1 ))
+                tail -n +$start_line "$temp_list" | head -n "$posts_per_page" > "$chunk_list"
+
+                base_url_dir="$(dirname "$target_url")"
+                [ "$base_url_dir" = "/" ] && base_url_dir=""
+
+                nav_html="<div class=\"pagination\">"
+                if [ "$p" -gt 1 ]; then
+                    if [ "$p" -eq 2 ]; then
+                        nav_html="$nav_html <a href=\"$base_url_dir/index.html\" class=\"prev-page\">&laquo; Prev</a> "
+                    else
+                        nav_html="$nav_html <a href=\"$base_url_dir/page/$((p-1))/index.html\" class=\"prev-page\">&laquo; Prev</a> "
+                    fi
+                fi
+                nav_html="$nav_html <span class=\"page-number\">Page $p of $num_pages</span> "
+                if [ "$p" -lt "$num_pages" ]; then
+                    nav_html="$nav_html <a href=\"$base_url_dir/page/$((p+1))/index.html\" class=\"next-page\">Next &raquo;</a> "
+                fi
+                nav_html="$nav_html</div>"
+
+                echo "" >> "$chunk_list"
+                echo "$nav_html" >> "$chunk_list"
+
+                temp_index_p="$KEWT_TMPDIR/index_p$p.md"
+                if [ "$has_custom_index" = "false" ]; then
+                    display_dir="${rel_dir#.}"
+                    [ -z "$display_dir" ] && display_dir="/"
+                    echo "# Index of $display_dir" > "$temp_index_p"
+                    echo "" >> "$temp_index_p"
+                else
+                    : > "$temp_index_p"
+                fi
+
+                if [ "$has_custom_index" = "true" ]; then
+                    awk '
+                        /^[[:space:]]*\{\{LIST\}\}[[:space:]]*$/ {
+                            while((getline line < "'"$chunk_list"'") > 0) print line
+                            close("'"$chunk_list"'")
+                            next
+                        }
+                        { print }
+                    ' "$dir/index.md" >> "$temp_index_p"
+                else
+                    cat "$chunk_list" >> "$temp_index_p"
+                fi
+
+                if [ "$p" -eq 1 ]; then
+                    out_file="$out_dir/index.html"
+                    target_url_p="$target_url"
+                else
+                    out_file="$out_dir/page/$p/index.html"
+                    target_url_p="$base_url_dir/page/$p/index.html"
+                    mkdir -p "$(dirname "$out_file")"
+                fi
+
+                render_markdown "$temp_index_p" "$is_home" "$target_url_p" > "$out_file"
+                rm -f "$temp_index_p" "$chunk_list"
+            done
+        else
+            if [ "$has_custom_index" = "true" ]; then
+                awk '
+                    /^[[:space:]]*\{\{LIST\}\}[[:space:]]*$/ {
+                        while((getline line < "'"$temp_list"'") > 0) print line
+                        close("'"$temp_list"'")
+                        next
+                    }
+                    { print }
+                ' "$dir/index.md" > "$temp_index"
+            else
+                cat "$temp_list" >> "$temp_index"
+            fi
+
+            do_rebuild="false"
+            needs_rebuild "$dir" "$out_dir/index.html" && do_rebuild="true"
+            [ "$has_custom_index" = "true" ] && needs_rebuild "$dir/index.md" "$out_dir/index.html" && do_rebuild="true"
+
+            if [ "$do_rebuild" = "false" ] && [ -f "$out_dir/index.html" ]; then
+                for _child in "$dir"/*; do
+                    [ -e "$_child" ] || continue
+                    if [ "$_child" -nt "$out_dir/index.html" ]; then
+                        do_rebuild="true"
+                        break
+                    fi
+                done
+            fi
+
+            if [ "$do_rebuild" = "true" ]; then
+                if [ "$has_custom_index" = "true" ]; then
+                    parse_frontmatter "$dir/index.md"
+                else
+                    fm_content_warning=""
+                fi
+                
+                if [ -n "$fm_content_warning" ]; then
+                    content_out_file="$out_dir/content.html"
+                    content_rel_url="/$rel_dir/content.html"
+                    [ "$rel_dir" = "." ] && content_rel_url="/content.html"
+                    
+                    is_cw_content_page="true"
+                    render_markdown "$temp_index" "$is_home" "$target_url" > "$content_out_file"
+                    is_cw_content_page="false"
+                    
+                    generate_content_warning_page "$fm_title" "$fm_content_warning" "$content_rel_url" "$target_url" "$out_dir/index.html" "false"
+                else
+                    render_markdown "$temp_index" "$is_home" "$target_url" > "$out_dir/index.html"
+                fi
+            fi
+        fi
+        rm -f "$temp_index" "$temp_list"
+    fi
+done
+
+if [ -f "$script_dir/styles/$style.css" ] && needs_rebuild "$script_dir/styles/$style.css" "$out/styles.css"; then
+    copy_style_with_resolved_vars "$script_dir/styles/$style.css" "$out/styles.css"
+fi
+
+eval "find \"$src\" \( $IGNORE_ARGS \) -prune -o -type f -print" | sort | while IFS= read -r file; do
+    rel_path="${file#"$src"}"
+    rel_path="${rel_path#/}"
+    dir_rel=$(dirname "$rel_path")
+    out_dir="$out/$dir_rel"
+
+    case "${file##*/}" in
+        template.html|site.conf|style.css|styles.css) continue ;;
+    esac
+
+    if [ "${file##*/}" = "index.md" ] && grep -q '^[[:space:]]*{{LIST}}[[:space:]]*$' "$file" 2>/dev/null; then
+        continue
+    fi
+
+    is_preserved=0
+    if [ -n "$(eval "find \"$file\" \( $PRESERVE_ARGS \) -print")" ]; then
+        is_preserved=1
+    fi
+
+    is_posts_dir_2="false"
+    if [ -n "$posts_dir" ] && { [ "$dir_rel" = "$posts_dir" ] || [ "./$dir_rel" = "$posts_dir" ]; }; then
+        is_posts_dir_2="true"
+    fi
+
+    if [ "$single_file_index" = "true" ] && [ "${file%.md}" != "$file" ] && [ "$is_preserved" -eq 0 ] && [ ! -f "$(dirname "$file")/index.md" ] && [ "$is_posts_dir_2" = "false" ]; then
+        md_count=$(find "$(dirname "$file")" ! -name "$(basename "$(dirname "$file")")" -prune -name "*.md" | wc -l)
+        [ "$md_count" -eq 1 ] && continue
+    fi
+
+    if [ "${file%.md}" != "$file" ] && [ "$is_preserved" -eq 0 ]; then
+        # Skip draft files
+        parse_frontmatter "$file"
+        if [ "$fm_draft" = "true" ]; then
+            continue
+        fi
+        is_home="false"; [ "$file" = "$src/index.md" ] && is_home="true"
+        out_file="$out/${rel_path%.md}.html"
+        if needs_rebuild "$file" "$out_file"; then
+            if [ -n "$fm_content_warning" ]; then
+                content_out_file="$out/${rel_path%.md}-content.html"
+                content_rel_url="/${rel_path%.md}-content.html"
+                orig_rel_url="/${rel_path%.md}.html"
+                
+                is_cw_content_page="true"
+                render_markdown "$file" "$is_home" "$orig_rel_url" > "$content_out_file"
+                is_cw_content_page="false"
+                
+                generate_content_warning_page "$fm_title" "$fm_content_warning" "$content_rel_url" "$orig_rel_url" "$out_file" "false"
+            else
+                render_markdown "$file" "$is_home" > "$out_file"
+            fi
+        fi
+    else
+        if needs_rebuild "$file" "$out/$rel_path"; then
+            cp "$file" "$out/$rel_path"
+        fi
+    fi
+done
+
+if [ -n "$error_page" ] && [ ! -f "$out/$error_page" ]; then
+    temp_404="$KEWT_TMPDIR/404_gen.md"
+    echo "# 404 - Not Found" > "$temp_404"
+    echo "" >> "$temp_404"
+    echo "The requested page could not be found." >> "$temp_404"
+    render_markdown "$temp_404" "false" "/$error_page" > "$out/$error_page"
+    rm -f "$temp_404"
+fi
+
+if [ -n "$base_url" ]; then
+    sitemap_file="$out/sitemap.xml"
+    base_url="${base_url%/}"
+    today=$(date +%Y-%m-%d)
+
+    printf '<?xml version="1.0" encoding="UTF-8"?>\n' > "$sitemap_file"
+    printf '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">\n' >> "$sitemap_file"
+
+    find "$out" -type f -name "*.html" -print | sort | while IFS= read -r html_file; do
+        rel_url="${html_file#"$out"}"
+
+        # Don't include 404 in the sitemap (duh)
+        [ "${rel_url#/}" = "$error_page" ] && continue
+
+        {
+            printf '  <url>\n'
+            printf '    <loc>%s%s</loc>\n' "$base_url" "$rel_url"
+            printf '    <lastmod>%s</lastmod>\n' "$today"
+            printf '  </url>\n'
+        } >> "$sitemap_file"
+    done
+
+    printf '</urlset>\n' >> "$sitemap_file"
+fi
+
+if [ "$generate_feed" = "true" ] && [ -n "$base_url" ]; then
+    feed_path="$out/$feed_file"
+    base_url_feed="${base_url%/}"
+    build_date=$(date -u '+%a, %d %b %Y %H:%M:%S +0000')
+
+    printf '<?xml version="1.0" encoding="UTF-8"?>\n' > "$feed_path"
+    {
+        printf '<rss version="2.0">\n'
+        printf '  <channel>\n'
+        printf '    <title>%s</title>\n' "$title"
+        printf '    <link>%s</link>\n' "$base_url_feed"
+        printf '    <description>%s</description>\n' "$title"
+        printf '    <lastBuildDate>%s</lastBuildDate>\n' "$build_date"
+    } >> "$feed_path"
+
+    temp_feed_files="$KEWT_TMPDIR/feed_files_$$.txt"
+    : > "$temp_feed_files"
+
+    find "$src" -type f -name '*.md' -path "*${posts_dir:-__no_posts__}*" -print | while IFS= read -r post_file; do
+        post_basename=$(basename "$post_file" .md)
+        # Parse frontmatter to get date
+        parse_frontmatter "$post_file"
+        [ "$fm_draft" = "true" ] && continue
+        if [ -n "$fm_date" ]; then
+            post_date=$(echo "$fm_date" | sed 's/^\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}\).*/\1/')
+            post_time="00:00"
+            if echo "$fm_date" | grep -q '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}[ T_-]\?[0-9]\{2\}[:\-][0-9]\{2\}'; then
+                post_time=$(echo "$fm_date" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}[ T_-]\?\([0-9]\{2\}[:\-][0-9]\{2\}\).*/\1/' | tr '-' ':')
+            fi
+        else
+            post_date=$(echo "$post_basename" | sed 's/^\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}\).*/\1/')
+            post_time="00:00"
+            if echo "$post_basename" | grep -q '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-[0-9]\{2\}[:\-][0-9]\{2\}'; then
+                post_time=$(echo "$post_basename" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-\([0-9]\{2\}[:\-][0-9]\{2\}\).*/\1/' | tr '-' ':')
+            fi
+        fi
+        echo "${post_date} ${post_time}|${post_file}" >> "$temp_feed_files"
+    done
+
+    LC_ALL=C sort -r "$temp_feed_files" | cut -d'|' -f2- | while IFS= read -r post_file; do
+        post_basename=$(basename "$post_file" .md)
+
+        # Parse frontmatter
+        parse_frontmatter "$post_file"
+        [ "$fm_draft" = "true" ] && continue
+
+        # Use frontmatter date, fallback to filename
+        if [ -n "$fm_date" ]; then
+            post_date=$(echo "$fm_date" | sed 's/^\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}\).*/\1/')
+            post_time="00:00"
+            if echo "$fm_date" | grep -q '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}[ T_-]\?[0-9]\{2\}[:\-][0-9]\{2\}'; then
+                post_time=$(echo "$fm_date" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}[ T_-]\?\([0-9]\{2\}[:\-][0-9]\{2\}\).*/\1/' | tr '-' ':')
+            fi
+        else
+            post_date=$(echo "$post_basename" | sed 's/^\([0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}\).*/\1/')
+            post_time="00:00"
+            if echo "$post_basename" | grep -q '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-[0-9]\{2\}[:\-][0-9]\{2\}'; then
+                post_time=$(echo "$post_basename" | sed 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}-\([0-9]\{2\}[:\-][0-9]\{2\}\).*/\1/' | tr '-' ':')
+            fi
+        fi
+
+        post_slug=$(echo "$post_basename" | 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/^[_\-]//')
+
+        post_heading="$fm_title"
+        if [ -z "$post_heading" ]; then
+            post_heading=$(grep -m 1 '^# ' "$post_file" | sed 's/^# *//')
+        fi
+        if [ -z "$post_heading" ]; then
+            if [ -n "$post_slug" ] && ! echo "$post_slug" | grep -q '^[0-9]\+$'; then
+                post_heading=$(echo "$post_slug" | sed 's/-/ /g' | awk '{for(i=1;i<=NF;i++) $i=toupper(substr($i,1,1)) substr($i,2)}1')
+            else
+                post_heading="Post"
+            fi
+        fi
+        post_heading=$(echo "$post_heading" | sed -e 's/\[//g' -e 's/\]//g' -e 's/!//g' -e 's/\*//g' -e 's/_//g' -e 's/`//g' -e 's/([^)]*)//g' | sed 's/\\//g')
+        feed_post_title="$post_heading - $post_date $post_time"
+
+        rel_path="${post_file#"$src"}"
+        rel_path="${rel_path#/}"
+        post_url="$base_url_feed/${rel_path%.md}.html"
+
+        if date -u -d "$post_date $post_time" '+%a, %d %b %Y %H:%M:%S +0000' >/dev/null 2>&1; then
+            pub_date=$(date -u -d "$post_date $post_time" '+%a, %d %b %Y %H:%M:%S +0000')
+        else
+            pub_year=$(echo "$post_date" | cut -d- -f1)
+            pub_month=$(echo "$post_date" | cut -d- -f2)
+            pub_day=$(echo "$post_date" | cut -d- -f3)
+            # zero-padded
+            pub_day=$(printf '%02d' "${pub_day#0}")
+            case "$pub_month" in
+                01) pub_mon="Jan" ;; 02) pub_mon="Feb" ;; 03) pub_mon="Mar" ;;
+                04) pub_mon="Apr" ;; 05) pub_mon="May" ;; 06) pub_mon="Jun" ;;
+                07) pub_mon="Jul" ;; 08) pub_mon="Aug" ;; 09) pub_mon="Sep" ;;
+                10) pub_mon="Oct" ;; 11) pub_mon="Nov" ;; 12) pub_mon="Dec" ;;
+            esac
+            pub_date="Mon, ${pub_day} ${pub_mon} ${pub_year} ${post_time}:00 +0000"
+        fi
+
+        {
+            printf '    <item>\n'
+            printf '      <title>%s</title>\n' "$feed_post_title"
+            printf '      <link>%s</link>\n' "$post_url"
+            printf '      <guid>%s</guid>\n' "$post_url"
+            printf '      <pubDate>%s</pubDate>\n' "$pub_date"
+            printf '    </item>\n'
+        } >> "$feed_path"
+    done
+
+    printf '  </channel>\n' >> "$feed_path"
+    printf '</rss>\n' >> "$feed_path"
+fi
+
+if [ "$generate_search" = "true" ] || [ "$generate_tags" = "true" ]; then
+    if [ "$generate_search" = "true" ]; then
+        printf '[\n' > "$out/search.json"
+    fi
+    first_search_item="true"
+    temp_tags="$KEWT_TMPDIR/tags_$$.txt"
+    : > "$temp_tags"
+
+    eval "find \"$src\" \( $IGNORE_ARGS -o $HIDE_ARGS -o $PRESERVE_ARGS \) -prune -o -name \"*.md\" -print" | sort | while IFS= read -r md_file; do
+        is_index="false"
+        [ "$(basename "$md_file")" = "index.md" ] && is_index="true"
+
+        rel_path="${md_file#"$src"}"
+        rel_path="${rel_path#/}"
+        if [ "$is_index" = "true" ]; then
+            if [ "$rel_path" = "index.md" ]; then
+                md_url="/index.html"
+            else
+                md_url="/${rel_path%/index.md}/index.html"
+            fi
+        else
+            md_url="/${rel_path%.md}.html"
+            if [ "$single_file_index" = "true" ]; then
+                dir_of_file="$(dirname "$md_file")"
+                rel_dir_of_file="${dir_of_file#"$src"}"
+                rel_dir_of_file="${rel_dir_of_file#/}"
+                [ -z "$rel_dir_of_file" ] && rel_dir_of_file="."
+
+                is_posts_dir_search="false"
+                if [ -n "$posts_dir" ] && { [ "$rel_dir_of_file" = "$posts_dir" ] || [ "./$rel_dir_of_file" = "$posts_dir" ]; }; then
+                    is_posts_dir_search="true"
+                fi
+
+                if [ "$is_posts_dir_search" = "false" ] && [ ! -f "$dir_of_file/index.md" ]; then
+                    md_count_search=$(find "$dir_of_file" ! -name "$(basename "$dir_of_file")" -prune -name "*.md" | wc -l)
+                    if [ "$md_count_search" -eq 1 ]; then
+                        if [ "$rel_dir_of_file" = "." ]; then
+                            md_url="/index.html"
+                        else
+                            md_url="/$rel_dir_of_file/index.html"
+                        fi
+                    fi
+                fi
+            fi
+        fi
+
+        parse_frontmatter "$md_file"
+        [ "$fm_draft" = "true" ] && continue
+        [ -n "$fm_content_warning" ] && continue
+        
+        md_heading="$fm_title"
+        if [ -z "$md_heading" ]; then
+            md_heading=$(grep -m 1 '^# ' "$md_file" | sed 's/^# *//; s/ *$//')
+            if [ -n "$md_heading" ]; then
+                md_heading=$(echo "$md_heading" | sed -e 's/\[//g' -e 's/\]//g' -e 's/!//g' -e 's/\*//g' -e 's/_//g' -e 's/`//g' -e 's/([^)]*)//g' | sed 's/\\//g')
+            fi
+        fi
+        if [ -z "$md_heading" ]; then
+            basename_no_ext=$(basename "$md_file" .md)
+            if [ "$basename_no_ext" != "index" ] && [ "$basename_no_ext" != "404_gen" ]; then
+                md_heading=$(echo "$basename_no_ext" | awk '{print toupper(substr($0,1,1)) substr($0,2)}')
+            else
+                md_heading="$title - Page"
+            fi
+        fi
+
+        if [ "$generate_search" = "true" ]; then
+            md_content=$(awk '{
+                if (NR == 1 && $0 == "---") { in_fm = 1; next }
+                if (in_fm && $0 == "---") { in_fm = 0; next }
+                if (in_fm) next
+                if ($0 ~ /^```/) { in_code = !in_code; next }
+                if (in_code) next
+                print
+            }' "$md_file" | sed \
+                -e 's/^#\{1,6\} //' \
+                -e 's/\*\*\([^*]*\)\*\*/\1/g' \
+                -e 's/\*\([^*]*\)\*/\1/g' \
+                -e 's/__\([^_]*\)__/\1/g' \
+                -e 's/_\([^_]*\)_/\1/g' \
+                -e 's/`\([^`]*\)`/\1/g' \
+                -e 's/\[\([^]]*\)](\([^)]*\))/\1/g' \
+                -e 's/!\[\([^]]*\)](\([^)]*\))//g' \
+                -e 's/^[[:space:]]*[-*+] //' \
+                -e 's/^[[:space:]]*[0-9]\{1,\}\. //' \
+                -e 's/^>[[:space:]]*//' \
+                -e 's/<[^>]*>//g' \
+                -e '/^[[:space:]]*$/d' \
+                -e 's/|//g' \
+                -e 's/^[[:space:]]*---[[:space:]]*$//' \
+                | tr '\n' ' ' | sed -e 's/  */ /g' -e 's/\\/\\\\/g' -e 's/"/\\"/g' | head -c 500)
+            if [ "$first_search_item" = "false" ]; then
+                printf ',\n' >> "$out/search.json"
+            fi
+            printf '  {"url": "%s", "title": "%s", "content": "%s"}' "$md_url" "$md_heading" "$md_content" >> "$out/search.json"
+            first_search_item="false"
+        fi
+
+        if [ "$generate_tags" = "true" ] && [ -n "$fm_tags" ]; then
+            old_ifs=$IFS
+            IFS=','
+            for tag in $fm_tags; do
+                tag=$(echo "$tag" | sed 's/^[ \t]*//;s/[ \t]*$//')
+                [ -z "$tag" ] && continue
+                printf '%s|%s|%s\n' "$tag" "$md_url" "$md_heading" >> "$temp_tags"
+            done
+            IFS=$old_ifs
+        fi
+    done
+
+    if [ "$generate_search" = "true" ]; then
+        printf '\n]\n' >> "$out/search.json"
+
+        cp "$script_dir/lib/search.js" "$out/search.js"
+
+        search_md="$KEWT_TMPDIR/search_$$.md"
+        printf '%s\n' '# Search' '' \
+            '<form class="kewt-search-page" action="/search.html" method="get">' \
+            '  <input type="text" id="search-box" name="q" placeholder="Search..." required>' \
+            '  <button type="submit">Search</button>' \
+            '</form>' '' \
+            '<div id="search-results-list">' \
+            '  <p>Loading...</p>' \
+            '</div>' '' \
+            '<script src="/search.js"></script>' > "$search_md"
+        render_markdown "$search_md" "false" "/search.html" > "$out/search.html"
+        rm -f "$search_md"
+    fi
+
+    if [ "$generate_tags" = "true" ]; then
+        tags_out_dir="$out/$tags_dir"
+        mkdir -p "$tags_out_dir"
+        
+        tags_index_md="$KEWT_TMPDIR/tags_index_$$.md"
+        echo "# Tags" > "$tags_index_md"
+        echo "" >> "$tags_index_md"
+
+        cut -d'|' -f1 "$temp_tags" | sort -u | while IFS= read -r tag; do
+            tag_slug=$(echo "$tag" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9]/-/g')
+            
+            echo "- [$tag](/$(echo $tags_dir | sed 's|^\/||; s|\/$||')/$tag_slug.html)" >> "$tags_index_md"
+            
+            tag_page_md="$KEWT_TMPDIR/tag_page_$$.md"
+            echo "# Tag: $tag" > "$tag_page_md"
+            echo "" >> "$tag_page_md"
+            echo "Posts tagged with **$tag**:" >> "$tag_page_md"
+            echo "" >> "$tag_page_md"
+            
+            grep "^${tag}|" "$temp_tags" | while IFS='|' read -r _t t_url t_title; do
+                echo "- [$t_title]($t_url)" >> "$tag_page_md"
+            done
+            
+            render_markdown "$tag_page_md" "false" "/$tags_dir/$tag_slug.html" > "$tags_out_dir/$tag_slug.html"
+            rm -f "$tag_page_md"
+        done
+        
+        render_markdown "$tags_index_md" "false" "/$tags_dir/index.html" > "$tags_out_dir/index.html"
+        rm -f "$tags_index_md"
+    fi
+    rm -f "$temp_tags"
+fi
+
+echo "Build complete."
+}

lib/commands.sh

@@ -0,0 +1,140 @@
+usage() {
+    invoked_as=$(basename "${KEWT_INVOKED_AS:-$0}")
+    cat <<EOF
+Usage: $invoked_as [--from <src>] [--to <out>]
+       $invoked_as [src] [out]
+       $invoked_as --new [title]
+       $invoked_as --update [dir]
+       $invoked_as --post
+       $invoked_as --generate-template
+       $invoked_as --version
+       $invoked_as --help
+
+Options:
+  --help                     Show this help message.
+  --new [title]              Create a new site directory (default: site)
+  --update [dir]             Update site.conf and template.html with latest defaults (defaults to current directory)
+  --post                     Create a new empty post file in the configured posts_dir with current date and time as name
+  --generate-template [path] Generate a new template file at <path> (default: template.html)
+  --version                  Show version information.
+  --from <src>               Source directory (default: site)
+  --to <out>                 Output directory (default: out)
+  --watch, -w                Watch for file changes and rebuild automatically.
+  --serve, -s [port]         Start a local HTTP server after building (default port: 8000).
+EOF
+}
+generate_template() {
+    _gt_path="$1"
+    [ -e "$_gt_path" ] && die "File '$_gt_path' already exists."
+    _gt_dir=$(dirname "$_gt_path")
+    [ -d "$_gt_dir" ] || mkdir -p "$_gt_dir"
+    printf '%s\n' "$DEFAULT_TMPL" > "$_gt_path"
+    echo "Generated template at '$_gt_path'."
+    exit 0
+}
+
+create_new_site() {
+    new_title="$1"
+    new_dir="site"
+    [ -n "$new_title" ] && new_dir="$new_title"
+
+    [ -e "$new_dir" ] && die "Target '$new_dir' already exists."
+
+    mkdir -p "$new_dir"
+    printf '%s\n' "$DEFAULT_CONF" > "$new_dir/site.conf"
+    printf '%s\n' "$DEFAULT_TMPL" > "$new_dir/template.html"
+    printf "# _kewt_ website\n" > "$new_dir/index.md"
+
+    if [ -n "$new_title" ]; then
+        AWK_NEW_TITLE="$new_title" awk -f "$awk_dir/update_site_conf.awk" "$new_dir/site.conf" > "$new_dir/site.conf.tmp" && mv "$new_dir/site.conf.tmp" "$new_dir/site.conf"
+    fi
+
+    echo "Created new site at '$new_dir'."
+    exit 0
+}
+
+create_new_post() {
+    post_src_dir="$1"
+    post_user_title="$2"
+
+    target_dir="$post_src_dir"
+    if [ -n "$posts_dir" ]; then
+        target_dir="$post_src_dir/$posts_dir"
+    fi
+
+    mkdir -p "$target_dir"
+
+    base_filename="$(date +%Y-%m-%d-%H-%M)"
+    filename="${base_filename}.md"
+    file_path="$target_dir/$filename"
+
+    counter=1
+    while [ -e "$file_path" ]; do
+        filename="${base_filename}_${counter}.md"
+        file_path="$target_dir/$filename"
+        counter=$((counter + 1))
+    done
+
+    post_date_val="$(date "+%Y-%m-%d %H:%M")"
+    if [ -n "$post_user_title" ]; then
+        printf -- '---\ntitle = "%s"\ndate = "%s"\ndraft = %s\n---\n# %s\n' "$post_user_title" "$post_date_val" "$draft_by_default" "$post_user_title" > "$file_path"
+    else
+        printf -- '---\ndate = "%s"\ndraft = %s\n---\n' "$post_date_val" "$draft_by_default" > "$file_path"
+    fi
+
+    echo "Created new post at '$file_path'."
+    exit 0
+}
+
+update_site() {
+    update_dir="${1:-.}"
+    [ -d "$update_dir" ] || die "Directory '$update_dir' does not exist."
+
+    target_conf="$update_dir/site.conf"
+    target_tmpl="$update_dir/template.html"
+
+    # Generate default site.conf
+    default_conf="$KEWT_TMPDIR/default_site.conf"
+    printf '%s\n' "$DEFAULT_CONF" > "$default_conf"
+
+    # Update site.conf
+    if [ ! -f "$target_conf" ]; then
+        echo "No site.conf found in '$update_dir'; nothing to update."
+    else
+        added=0
+        while IFS= read -r line; do
+            case "$line" in
+                ''|'#'*) continue ;;
+                *=*) ;;
+                *) continue ;;
+            esac
+            key=$(printf '%s' "${line%%=*}" | sed 's/^[[:space:]]*//; s/[[:space:]]*$//')
+            if ! grep -q "^[[:space:]]*${key}[[:space:]]*=" "$target_conf"; then
+                printf '%s\n' "$line" >> "$target_conf"
+                echo "  Added: $key"
+                added=$((added + 1))
+            fi
+        done < "$default_conf"
+        if [ "$added" -eq 0 ]; then
+            echo "site.conf is already up to date."
+        else
+            echo "Added $added new key(s) to '$target_conf'."
+        fi
+    fi
+
+    # Update template.html
+    if [ -f "$target_tmpl" ]; then
+        default_tmpl="$KEWT_TMPDIR/default_template.html"
+        printf '%s\n' "$DEFAULT_TMPL" > "$default_tmpl"
+        if cmp -s "$default_tmpl" "$target_tmpl" 2>/dev/null; then
+            echo "template.html is already up to date."
+        else
+            cp "$default_tmpl" "${target_tmpl}.default"
+            echo "template.html has local changes; saved latest default as '${target_tmpl}.default'."
+            echo ""
+            diff "$target_tmpl" "${target_tmpl}.default" || true
+        fi
+    fi
+
+    exit 0
+}

lib/config.sh

@@ -0,0 +1,159 @@
+DEFAULT_CONF='title = "kewt"
+style = "kewt"
+lang = "en"
+draft_by_default = false
+dir_indexes = true
+single_file_index = true
+flatten = false
+order = ""
+home_name = "Home"
+show_home_in_nav = true
+nav_links = ""
+nav_extra = ""
+footer = "made with <a href=\"https://kewt.krzak.org\">kewt</a>"
+logo = ""
+display_logo = false
+display_title = true
+logo_as_favicon = true
+favicon = ""
+generate_page_title = true
+error_page = "not_found.html"
+versioning = false
+enable_header_links = true
+base_url = ""
+generate_feed = false
+feed_file = "rss.xml"
+posts_dir = ""
+posts_per_page = 12
+custom_admonitions = ""
+cw_hide_url = true
+generate_tags = false
+tags_dir = "tags"
+generate_search = false
+search_in_footer = false
+search_in_header = false'
+
+DEFAULT_TMPL='<!doctype html>
+<html lang="{{LANG}}">
+    <head>
+        <meta charset="UTF-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <title>{{TITLE}}</title>
+
+        <link rel="stylesheet" href="{{CSS}}{{VERSION}}" type="text/css" />
+        {{HEAD_EXTRA}}
+    </head>
+
+    <body>
+        <input type="checkbox" id="nav-toggle" class="nav-toggle" aria-hidden="true" />
+        <header>
+            <h1>{{HEADER_BRAND}}</h1>
+            <label for="nav-toggle" class="nav-toggle-label" aria-hidden="true">&#9776;</label>
+        </header>
+
+        <nav id="side-bar">{{NAV}}</nav>
+
+        <article>{{CONTENT}}</article>
+        <footer>{{FOOTER}}</footer>
+    </body>
+</html>'
+
+title="kewt"
+style="kewt"
+lang="en"
+draft_by_default="false"
+footer="made with <a href=\"https://kewt.krzak.org\">kewt</a>"
+dir_indexes="true"
+single_file_index="true"
+flatten="false"
+order=""
+home_name="Home"
+show_home_in_nav="true"
+nav_links=""
+nav_extra=""
+footer="made with <a href=\"https://kewt.krzak.org\">kewt</a>"
+logo=""
+display_logo="false"
+display_title="true"
+logo_as_favicon="true"
+favicon=""
+generate_page_title="true"
+error_page="not_found.html"
+versioning="false"
+enable_header_links="true"
+base_url=""
+generate_feed="false"
+feed_file="rss.xml"
+posts_dir=""
+posts_per_page="12"
+custom_admonitions=""
+cw_hide_url="true"
+generate_tags="false"
+tags_dir="tags"
+generate_search="false"
+search_in_footer="false"
+search_in_header="false"
+
+load_config() {
+    [ -f "$1" ] || return
+    while IFS= read -r line || [ -n "$line" ]; do
+        case "$line" in
+            ''|'#'*) continue ;;
+            *=*) ;;
+            *) continue ;;
+        esac
+
+        key=${line%%=*}
+        val=${line#*=}
+
+        key=$(printf '%s' "$key" | sed 's/^[[:space:]]*//; s/[[:space:]]*$//')
+        val=$(printf '%s' "$val" | sed 's/^[[:space:]]*//; s/[[:space:]]*$//')
+        case "$val" in
+            \"*\")
+                val=${val#\"}; val=${val%\"}
+                val=$(printf '%s' "$val" | sed 's/\\"/\"/g; s/\\\\/\\/g')
+                ;;
+            \'*\')
+                val=${val#\'}; val=${val%\'}
+                val=$(printf '%s' "$val" | sed "s/\\\\'/'/g; s/\\\\/\\/g")
+                ;;
+        esac
+
+        case "$key" in
+            title) title="$val" ;;
+            style) style="${val#/}" ;;
+            dir_indexes) dir_indexes="$val" ;;
+            single_file_index) single_file_index="$val" ;;
+            flatten) flatten="$val" ;;
+            order) order="$val" ;;
+            home_name) home_name="$val" ;;
+            show_home_in_nav) show_home_in_nav="$val" ;;
+            nav_links) nav_links="$val" ;;
+            nav_extra) nav_extra="$val" ;;
+            footer) footer="$val" ;;
+            logo) logo="${val#/}" ;;
+            display_logo) display_logo="$val" ;;
+            display_title) display_title="$val" ;;
+            logo_as_favicon) logo_as_favicon="$val" ;;
+            favicon) favicon="${val#/}" ;;
+            generate_page_title) generate_page_title="$val" ;;
+            error_page) error_page="${val#/}" ;;
+            versioning) versioning="$val" ;;
+            enable_header_links) enable_header_links="$val" ;;
+            base_url) base_url="$val" ;;
+            generate_feed) generate_feed="$val" ;;
+            feed_file) feed_file="${val#/}" ;;
+            posts_dir) posts_dir="${val#/}" ;;
+            posts_per_page) posts_per_page="$val" ;;
+            custom_admonitions) custom_admonitions="$val" ;;
+            cw_hide_url) cw_hide_url="$val" ;;
+            lang) lang="$val" ;;
+            draft_by_default) draft_by_default="$val" ;;
+            generate_tags) generate_tags="$val" ;;
+            tags_dir) tags_dir="${val#/}" ;;
+            generate_search) generate_search="$val" ;;
+            search_in_footer) search_in_footer="$val" ;;
+            search_in_header) search_in_header="$val" ;;
+        esac
+    done < "$1"
+}

lib/generator.sh

@@ -0,0 +1,289 @@
+SEARCH_FORM_FOOTER='<form class="kewt-search-footer" action="/search.html" method="get"><input type="text" name="q" placeholder="Search..." required><button type="submit">Go</button></form>'
+SEARCH_FORM_HEADER='<form class="kewt-search-header" action="/search.html" method="get"><input type="text" name="q" placeholder="Search..." required><button type="submit">Go</button></form>'
+SEARCH_FORM_NAV='<div class="kewt-search-nav"><form action="/search.html" method="get"><input type="text" name="q" placeholder="Search..." required><button type="submit">Go</button></form></div>'
+
+generate_nav() {
+    dinfo=$(eval "find \"$1\" \( $IGNORE_ARGS -o $HIDE_ARGS -o $PRESERVE_ARGS \) -prune -o -print" | sort | AWK_SRC="$1" awk -f "$awk_dir/collect_dir_info.awk")
+    find_cmd="find \"$1\" \( $IGNORE_ARGS -o $HIDE_ARGS -o $PRESERVE_ARGS \) -prune -o -name \"*.md\" -print"
+    if [ -n "$posts_dir" ] && [ -d "$1/$posts_dir" ]; then
+        find_cmd="$find_cmd && echo \"$1/$posts_dir/index.md\""
+    fi
+    eval "$find_cmd" | sort -u | AWK_SRC="$1" AWK_SINGLE_FILE_INDEX="$single_file_index" AWK_FLATTEN="$flatten" AWK_ORDER="$order" AWK_HOME_NAME="$home_name" AWK_SHOW_HOME_IN_NAV="$show_home_in_nav" AWK_DINFO="$dinfo" awk -f "$awk_dir/generate_sidebar.awk"
+}
+escape_html_text() {
+    printf '%s' "$1" | sed \
+        -e 's/&/\&amp;/g' \
+        -e 's/</\&lt;/g' \
+        -e 's/>/\&gt;/g'
+}
+escape_html_attr() {
+    printf '%s' "$1" | sed \
+        -e 's/&/\&amp;/g' \
+        -e 's/"/\&quot;/g' \
+        -e 's/</\&lt;/g' \
+        -e 's/>/\&gt;/g'
+}
+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 "$_fm_out"
+}
+nav_links_html() {
+    [ -n "$nav_links" ] || return
+
+    old_ifs=$IFS
+    set -f
+    IFS=','
+    # shellcheck disable=SC2086
+    set -- $nav_links
+    IFS=$old_ifs
+    set +f
+
+    [ $# -gt 0 ] || return
+
+    printf '<ul class="nav-extra-links">\n'
+    for raw_link in "$@"; do
+        link=$(printf '%s' "$raw_link" | sed 's/^[[:space:]]*//; s/[[:space:]]*$//')
+        [ -n "$link" ] || continue
+
+        case "$link" in
+            \[*\]\(*\))
+                label=${link#\[}
+                label=${label%%\]*}
+                link_url=${link#*](}
+                link_url=${link_url%)}
+                ;;
+            *)
+                link_url=$link
+                label=$(printf '%s' "$link" | sed \
+                    -e 's|^[A-Za-z][A-Za-z0-9+.-]*://||' \
+                    -e 's|/$||')
+                [ -n "$label" ] || label="$link"
+                ;;
+        esac
+
+        [ -n "$link_url" ] || continue
+        [ -n "$label" ] || label="$link_url"
+
+        link_attr=$(escape_html_attr "$link_url")
+        label_text=$(escape_html_text "$label")
+        printf '<li><a href="%s">%s</a></li>\n' "$link_attr" "$label_text"
+    done
+    printf '</ul>'
+}
+find_closest() {
+    target="$1"
+    start_dir="$2"
+    curr="$start_dir"
+    while [ "$curr" != "$src" ] && [ "$curr" != "." ] && [ "$curr" != "/" ]; do
+        if [ -f "$curr/$target" ]; then
+            echo "$curr/$target"
+            return
+        fi
+        curr=$(dirname "$curr")
+    done
+    if [ -f "$src/$target" ]; then
+        echo "$src/$target"
+    fi
+}
+copy_style_with_resolved_vars() {
+    src_style="$1"
+    out_style="$2"
+    awk -f "$awk_dir/replace_variables.awk" "$src_style" > "$out_style"
+}
+render_markdown() {
+    file="$1"
+    is_home="$2"
+    url_override="$3"
+
+    if [ -n "$url_override" ]; then
+        current_url="$url_override"
+    else
+        rel_path="${file#"$src"}"
+        rel_path="${rel_path#/}"
+        current_url="/${rel_path%.md}.html"
+    fi
+
+    content_file="$file"
+    if [ -n "$posts_dir" ] && [ "$file" != "$src/$posts_dir/index.md" ]; then
+        rel_dir_of_url=$(dirname "$current_url")
+        rel_dir_of_url="${rel_dir_of_url#/}"
+        if { [ "$rel_dir_of_url" = "$posts_dir" ] || [ "./$rel_dir_of_url" = "$posts_dir" ]; } && [ "$(basename "$current_url")" != "index.html" ]; then
+             temp_post_with_backlink="$KEWT_TMPDIR/post_with_backlink_$$.md"
+             printf "[< Back](index.html)\n\n" > "$temp_post_with_backlink"
+             awk -f "$awk_dir/frontmatter.awk" "$file" >> "$temp_post_with_backlink"
+             
+             post_md_name="$(basename "$current_url" .html).md"
+             prevnext_file="$KEWT_TMPDIR/prevnext/$post_md_name"
+             if [ -f "$prevnext_file" ]; then
+                 IFS='|' read -r prev_str next_str < "$prevnext_file"
+                 
+                 printf "\n\n---\n<div class=\"post-nav\">\n" >> "$temp_post_with_backlink"
+                 if [ -n "$prev_str" ]; then
+                     printf "<span class=\"prev-post\">%s</span>\n" "$prev_str" >> "$temp_post_with_backlink"
+                 fi
+                 if [ -n "$next_str" ]; then
+                     printf "<span class=\"next-post\">%s</span>\n" "$next_str" >> "$temp_post_with_backlink"
+                 fi
+                 printf "</div>\n" >> "$temp_post_with_backlink"
+             fi
+             content_file="$temp_post_with_backlink"
+        fi
+    fi
+
+    local_template=$(find_closest "template.html" "$(dirname "$file")")
+    [ -z "$local_template" ] && local_template="$template"
+
+    closest_style_src=$(find_closest "styles.css" "$(dirname "$file")")
+    [ -z "$closest_style_src" ] && closest_style_src=$(find_closest "style.css" "$(dirname "$file")")
+    if [ -n "$closest_style_src" ]; then
+        style_rel_to_src="${closest_style_src#"$src"/}"
+        case "$closest_style_src" in
+            "$src/styles.css") style_rel_to_src="styles.css" ;;
+            "$src/style.css") style_rel_to_src="style.css" ;;
+        esac
+        style_path="/${style_rel_to_src%styles.css}"
+        style_path="${style_path%style.css}styles.css"
+    else
+        style_path="/styles.css"
+    fi
+
+    logo_html=""
+    if [ "$display_logo" = "true" ] && [ -n "$logo" ]; then
+        logo_html="<img class=\"site-logo\" src=\"$logo\" alt=\"$title\" />"
+    fi
+
+    brand_text=""
+    if [ "$display_title" = "true" ]; then
+        brand_text="$title"
+    fi
+
+    if [ -n "$logo_html" ] && [ -n "$brand_text" ]; then
+        header_brand="<a href=\"/index.html\">$logo_html $brand_text</a>"
+    elif [ -n "$logo_html" ]; then
+        header_brand="<a href=\"/index.html\">$logo_html</a>"
+    elif [ -n "$brand_text" ]; then
+        header_brand="<a href=\"/index.html\">$brand_text</a>"
+    else
+        header_brand="<a href=\"/index.html\">$title</a>"
+    fi
+
+    favicon_src=""
+    if [ "$logo_as_favicon" = "true" ] && [ -n "$logo" ]; then
+        favicon_src="$logo"
+    elif [ -n "$favicon" ]; then
+        favicon_src="$favicon"
+    fi
+    head_extra=""
+    if [ -n "$favicon_src" ]; then
+        if echo "$favicon_src" | grep -q "^http"; then
+            head_extra="<link rel=\"icon\" href=\"$favicon_src\" />"
+        elif echo "$favicon_src" | grep -q "^/"; then
+            head_extra="<link rel=\"icon\" href=\"$favicon_src\" />"
+        else
+            head_extra="<link rel=\"icon\" href=\"/$favicon_src\" />"
+        fi
+    fi
+
+    parse_frontmatter "$file"
+
+    page_title="$title"
+    if [ -n "$fm_title" ]; then
+        page_title="$fm_title - $title"
+    elif [ "$generate_page_title" = "true" ] && [ -n "$file" ] && [ -f "$file" ]; then
+        if [ "$is_home" = "true" ] && [ -n "$home_name" ]; then
+            page_title="$home_name - $title"
+        else
+            first_heading=$(grep -m 1 '^# ' "$file" | sed 's/^# *//; s/ *$//')
+            if [ -n "$first_heading" ]; then
+                first_heading=$(echo "$first_heading" | sed -e 's/\[//g' -e 's/\]//g' -e 's/!//g' -e 's/\*//g' -e 's/_//g' -e 's/`//g' -e 's/([^)]*)//g' | sed 's/\\//g')
+                page_title="$first_heading - $title"
+            else
+                basename_no_ext=$(basename "$file" .md)
+                if [ "$basename_no_ext" != "index" ] && [ "$basename_no_ext" != "404_gen" ]; then
+                    cap_basename=$(echo "$basename_no_ext" | awk '{print toupper(substr($0,1,1)) substr($0,2)}')
+                    page_title="$cap_basename - $title"
+                fi
+            fi
+        fi
+    fi
+
+    head_extra_og="<meta property=\"og:title\" content=\"$(escape_html_attr "$page_title")\" />"
+    if [ -n "$fm_description" ]; then
+        head_extra_og="$head_extra_og
+        <meta property=\"og:description\" content=\"$(escape_html_attr "$fm_description")\" />"
+    fi
+    og_url="${base_url%/}${current_url}"
+    head_extra_og="$head_extra_og
+        <meta property=\"og:url\" content=\"$(escape_html_attr "$og_url")\" />"
+
+    if [ -n "$head_extra" ]; then
+        head_extra="$head_extra
+        $head_extra_og"
+    else
+        head_extra="$head_extra_og"
+    fi
+    
+    if [ "$is_cw_content_page" = "true" ] && [ "$cw_hide_url" = "true" ]; then
+        head_extra="$head_extra
+        <script>window.history.replaceState(null, '', '$current_url');</script>"
+    fi
+
+    final_footer="$footer"
+    if [ "$search_in_footer" = "true" ]; then
+        final_footer="$footer $SEARCH_FORM_FOOTER"
+    fi
+
+    final_nav="$nav"
+    final_header_brand="$header_brand"
+    if [ "$search_in_header" = "true" ]; then
+        final_header_brand="$header_brand $SEARCH_FORM_HEADER"
+        final_nav="$SEARCH_FORM_NAV
+$nav"
+    fi
+
+    ENABLE_HEADER_LINKS="$enable_header_links" CUSTOM_ADMONITIONS="$custom_admonitions" MARKDOWN_SITE_ROOT="$src" MARKDOWN_FALLBACK_FILE="$script_dir/styles/$style.css" sh "$script_dir/markdown.sh" "$content_file" | AWK_LANG="$lang" AWK_CURRENT_URL="$current_url" AWK_TITLE="$page_title" AWK_NAV="$final_nav" AWK_FOOTER="$final_footer" AWK_STYLE_PATH="${style_path}" AWK_HEADER_BRAND="$final_header_brand" AWK_HEAD_EXTRA="$head_extra" AWK_VERSION="$asset_version" AWK_CONTENT_WARNING="$fm_content_warning" awk -f "$awk_dir/render_template.awk" "$local_template"
+}
+generate_content_warning_page() {
+    _fm_title="$1"
+    _fm_content_warning="$2"
+    _content_rel_url="$3"
+    _target_url="$4"
+    _out_file="$5"
+    _is_home="$6"
+    
+    _temp_cw="$KEWT_TMPDIR/cw_$$.md"
+    _cw_text="${_fm_content_warning}"
+    [ "$_cw_text" = "true" ] && _cw_text="This content may be sensitive."
+    
+    cat <<EOF > "$_temp_cw"
+---
+title = "$_fm_title"
+---
+
+> [!CAUTION]
+> **Content Warning:** $_cw_text
+
+<a href="$(basename "$_content_rel_url")" class="cw-button">Reveal Content</a>
+EOF
+    render_markdown "$_temp_cw" "$_is_home" "$_target_url" > "$_out_file"
+    rm -f "$_temp_cw"
+}

lib/search.js

@@ -0,0 +1,44 @@
+document.addEventListener('DOMContentLoaded', function() {
+  var params = new URLSearchParams(window.location.search);
+  var query = params.get('q');
+  var box = document.getElementById('search-box');
+  var resultsContainer = document.getElementById('search-results-list');
+
+  if (box && query) box.value = query;
+
+  if (!query) {
+    resultsContainer.innerHTML = '<p>Enter a search term above.</p>';
+    return;
+  }
+
+  fetch('/search.json')
+    .then(function(response) { return response.json(); })
+    .then(function(data) {
+      var q = query.toLowerCase();
+      var results = data.filter(function(item) {
+        return item.title.toLowerCase().indexOf(q) !== -1 ||
+               item.content.toLowerCase().indexOf(q) !== -1;
+      });
+
+      var esc = query.replace(/</g, '&lt;').replace(/>/g, '&gt;');
+
+      if (results.length === 0) {
+        resultsContainer.innerHTML = '<p>No results found for "<strong>' + esc + '</strong>".</p>';
+        return;
+      }
+
+      var html = '<p>Found ' + results.length + ' result(s) for "<strong>' + esc + '</strong>":</p>';
+      results.forEach(function(result) {
+        var snippet = result.content.substring(0, 200);
+        if (result.content.length > 200) snippet += '...';
+        html += '<div class="search-result">';
+        html += '<a href="' + result.url + '">' + result.title + '</a>';
+        if (snippet) html += '<p>' + snippet + '</p>';
+        html += '</div>';
+      });
+      resultsContainer.innerHTML = html;
+    })
+    .catch(function() {
+      resultsContainer.innerHTML = '<p>Error loading search index.</p>';
+    });
+});

site/site.conf

@@ -22,4 +22,8 @@ base_url = "https://kewt.krzak.org"
 custom_admonitions = ""
 generate_feed = false
 feed_file = "rss.xml"
-posts_dir = ""
+posts_dir = ""
+generate_tags = false
+generate_search = true
+search_in_footer = true
+search_in_header = true

styles/kewt.css

@@ -48,6 +48,9 @@ header h1 {
     font-weight: bold;
     font-style: italic;
     color: var(--fg-heading);
+    display: flex;
+    align-items: center;
+    flex-wrap: wrap;
 }
 
 .site-logo {
@@ -218,6 +221,7 @@ pre code {
     background: var(--adm-caution-bg);
     border-color: var(--adm-caution-border);
 }
+
 .cw-button {
     display: inline-block;
     padding: 8px 16px;
@@ -321,4 +325,215 @@ hr {
 .task-list-item-checkbox {
     margin: 0 0.2em 0.25em -1.6em;
     vertical-align: middle;
+}
+
+.kewt-search-page {
+    display: flex;
+    gap: 8px;
+    margin: 20px 0;
+}
+
+.kewt-search-page input[type="text"] {
+    flex: 1;
+    padding: 8px 12px;
+    font-size: 16px;
+    font-family: inherit;
+    background: var(--code-bg);
+    color: var(--fg);
+    border: 1px solid var(--code-border);
+    border-radius: 3px;
+    outline: none;
+}
+
+.kewt-search-page input[type="text"]:focus {
+    border-color: var(--fg-link);
+}
+
+.kewt-search-page button {
+    padding: 8px 20px;
+    font-size: 16px;
+    font-family: inherit;
+    background: var(--bg-deep);
+    color: var(--fg);
+    border: 1px solid var(--code-border);
+    border-radius: 3px;
+    cursor: pointer;
+}
+
+.kewt-search-page button:hover {
+    background: var(--fg);
+    color: var(--bg);
+}
+
+.search-result {
+    margin: 16px 0;
+    padding: 12px;
+    background: var(--code-bg);
+    border: 1px solid var(--code-border);
+    border-radius: 3px;
+}
+
+.search-result a {
+    font-size: 18px;
+    font-weight: bold;
+    color: var(--fg-link);
+}
+
+.search-result p {
+    margin: 6px 0 0 0;
+    color: var(--fg-muted);
+    font-size: 14px;
+}
+
+/* Footer search */
+.kewt-search-footer {
+    display: inline-flex;
+    gap: 4px;
+    margin-left: 12px;
+    vertical-align: middle;
+}
+
+.kewt-search-footer input[type="text"] {
+    padding: 3px 8px;
+    font-size: 14px;
+    font-family: inherit;
+    background: var(--code-bg);
+    color: var(--fg);
+    border: 1px solid var(--code-border);
+    border-radius: 3px;
+    outline: none;
+    width: 120px;
+}
+
+.kewt-search-footer input[type="text"]:focus {
+    border-color: var(--fg-link);
+}
+
+.kewt-search-footer button {
+    padding: 3px 10px;
+    font-size: 14px;
+    font-family: inherit;
+    background: var(--bg-deep);
+    color: var(--fg);
+    border: 1px solid var(--code-border);
+    border-radius: 3px;
+    cursor: pointer;
+}
+
+.kewt-search-footer button:hover {
+    background: var(--fg);
+    color: var(--bg);
+}
+
+.kewt-search-header {
+    display: inline-flex;
+    gap: 4px;
+    margin-left: auto;
+    vertical-align: middle;
+    font-style: normal;
+}
+
+.kewt-search-header input[type="text"] {
+    padding: 4px 8px;
+    font-size: 14px;
+    font-family: inherit;
+    background: var(--code-bg);
+    color: var(--fg);
+    border: 1px solid var(--code-border);
+    border-radius: 3px;
+    outline: none;
+    width: 160px;
+}
+
+.kewt-search-header input[type="text"]:focus {
+    border-color: var(--fg-link);
+}
+
+.kewt-search-header button {
+    padding: 4px 10px;
+    font-size: 14px;
+    font-family: inherit;
+    background: var(--bg-deep);
+    color: var(--fg);
+    border: 1px solid var(--code-border);
+    border-radius: 3px;
+    cursor: pointer;
+}
+
+.kewt-search-header button:hover {
+    background: var(--fg);
+    color: var(--bg);
+}
+
+.kewt-search-nav {
+    display: none;
+    padding: 8px 0 12px 0;
+    margin-bottom: 8px;
+    border-bottom: 1px solid var(--code-border);
+}
+
+.kewt-search-nav form {
+    display: flex;
+    gap: 4px;
+}
+
+.kewt-search-nav input[type="text"] {
+    flex: 1;
+    padding: 6px 8px;
+    font-size: 14px;
+    font-family: inherit;
+    background: var(--code-bg);
+    color: var(--fg);
+    border: 1px solid var(--code-border);
+    border-radius: 3px;
+    outline: none;
+}
+
+.kewt-search-nav input[type="text"]:focus {
+    border-color: var(--fg-link);
+}
+
+.kewt-search-nav button {
+    padding: 6px 10px;
+    font-size: 14px;
+    font-family: inherit;
+    background: var(--bg-deep);
+    color: var(--fg);
+    border: 1px solid var(--code-border);
+    border-radius: 3px;
+    cursor: pointer;
+}
+
+.kewt-search-nav button:hover {
+    background: var(--fg);
+    color: var(--bg);
+}
+
+@media screen and (max-width: 600px) {
+    .kewt-search-header {
+        display: none;
+    }
+
+    .kewt-search-nav {
+        display: block;
+    }
+
+    .kewt-search-page {
+        flex-direction: column;
+    }
+
+    .kewt-search-page button {
+        align-self: flex-start;
+    }
+
+    .kewt-search-footer {
+        display: flex;
+        margin-left: 0;
+        margin-top: 8px;
+    }
+
+    .kewt-search-footer input[type="text"] {
+        flex: 1;
+        width: auto;
+    }
 }

tools/build-standalone.sh

@@ -28,10 +28,10 @@ EOF
 
 VERSION=$(git describe --tags 2>/dev/null || echo "standalone")
 tmpbuild=$(mktemp -d)
-cp -r "$REPO_ROOT/kewt.sh" "$REPO_ROOT/markdown.sh" "$REPO_ROOT/awk" "$REPO_ROOT/styles" "$tmpbuild/"
+cp -r "$REPO_ROOT/kewt.sh" "$REPO_ROOT/markdown.sh" "$REPO_ROOT/awk" "$REPO_ROOT/styles" "$REPO_ROOT/lib" "$tmpbuild/"
 sed -e "s/kewt version git/kewt version $VERSION/" "$tmpbuild/kewt.sh" > "$tmpbuild/kewt.sh.tmp" && mv "$tmpbuild/kewt.sh.tmp" "$tmpbuild/kewt.sh"
 chmod +x "$tmpbuild/kewt.sh" "$tmpbuild/markdown.sh"
-tar -cz -C "$tmpbuild" kewt.sh markdown.sh awk styles >> "$OUT_FILE"
+tar -cz -C "$tmpbuild" kewt.sh markdown.sh awk styles lib >> "$OUT_FILE"
 rm -rf "$tmpbuild"
 
 chmod +x "$OUT_FILE"