106 lines
2.1 KiB
Awk
106 lines
2.1 KiB
Awk
# render.awk - Awk-based templating
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BEGIN {
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action = "none"
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helpers_loaded = "no"
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content = ""
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layout = ""
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filter = "html"
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}
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{
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split(FILENAME, parts, ".")
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ext = parts[length(parts)]
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if (ext == "meta") { action = "meta" }
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if (ext == "layout") { action = "layout" }
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if (ext == "md") { action = "page"; filter = "markdown" }
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if (ext == "html") { action = "page"; filter = "html" }
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}
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# Process lines from meta files
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action == "meta" {
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split($0, kv, ": ")
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data[kv[1]] = kv[2]
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next
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}
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# Done processing meta
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# Since data is loaded now, load the helpers
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action != "meta" && helpers_loaded == "no" && helpers == "yes" {
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load_helpers()
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helpers_loaded = "yes"
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}
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# Process lines from the page
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action == "page" {
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if (content == "") {
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content = bind_data($0)
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} else {
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content = content "\n" bind_data($0)
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}
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next
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}
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# Process lines from the layout
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action == "layout" {
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# replace yield with rendered content
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if (match($0, /{{{yield}}}/)) {
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sub(/{{{yield}}}/, render_content(content))
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}
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if (layout == "") {
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layout = bind_data($0)
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} else {
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layout = layout "\n" bind_data($0)
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}
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}
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END {
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if (layout != "") {
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print layout
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} else {
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print render_content(content)
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}
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}
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function bind_data(txt, tag, key) {
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if (match(txt, /{{([^}]*)}}/)) {
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tag = substr(txt, RSTART, RLENGTH)
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match(tag, /([[:alnum:]_]|[?]).*[^}]/)
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key = substr(tag, RSTART, RLENGTH)
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gsub(tag, data[key], txt)
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return bind_data(txt, data)
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} else {
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return txt
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}
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}
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function render_content(txt) {
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if (filter == "html") return txt
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if (filter == "markdown") return markdown(txt)
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}
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function markdown(txt, rand_date, tmpfile, rendered_txt, date_cmd, markdown_cmd, line) {
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date_cmd = "date +%Y%m%d%H%M%S"
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date_cmd | getline rand_date
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close(date_cmd)
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tmpfile = "/tmp/awk_render" rand_date
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markdown_cmd = markdown_filter_cmd " > " tmpfile
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# pipe content to markdown.awk
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print txt | markdown_cmd
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close(markdown_cmd)
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# pull out the filtered page
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while((getline line < tmpfile) > 0) {
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rendered_txt = rendered_txt "\n" line
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}
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close(tmpfile)
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system("rm " tmpfile)
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return rendered_txt
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}
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