feat: frontmatter

2026-03-23 11:39:05 +01:00
parent 30b7681234
commit ef16ed4c88
7 changed files with 268 additions and 38 deletions
--- a/awk/frontmatter.awk
+++ b/awk/frontmatter.awk
@@ -0,0 +1,46 @@
+BEGIN {
+    state = "start"
+}
+{
+    if (state == "start") {
+        if ($0 == "---") {
+            state = "in_fm"
+            next
+        } else {
+            state = "body"
+            print
+            next
+        }
+    }
+    if (state == "in_fm") {
+        if ($0 == "---") {
+            state = "body"
+            next
+        }
+        line = $0
+        if (line ~ /^[[:space:]]*$/ || line ~ /^[[:space:]]*#/) next
+        if (line !~ /=/) next
+
+        key = line
+        val = line
+        sub(/=.*/, "", key)
+        sub(/[^=]*=/, "", val)
+
+        gsub(/^[[:space:]]+|[[:space:]]+$/, "", key)
+        gsub(/^[[:space:]]+|[[:space:]]+$/, "", val)
+
+        if (val ~ /^".*"$/) {
+            val = substr(val, 2, length(val) - 2)
+            gsub(/\\"/, "\"", val)
+        } else if (val ~ /^'.*'$/) {
+            val = substr(val, 2, length(val) - 2)
+            gsub(/\\'/, "'", val)
+        }
+
+        if (fm_out != "") {
+            print key "=" val >> fm_out
+        }
+        next
+    }
+    print
+}