From 937a39c9c0cd7ad9cd8dcc0c74ace00e38fc2838 Mon Sep 17 00:00:00 2001
From: Syndamia <kamen@syndamia.com>
Date: Sun, 21 Jul 2024 13:58:08 +0300
Subject: (single) Implemented inline links and fixed some minor issues

---
 single.awk | 62 +++++++++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 41 insertions(+), 21 deletions(-)

(limited to 'single.awk')

diff --git a/single.awk b/single.awk
index eadb7d1..4e2e19a 100644
--- a/single.awk
+++ b/single.awk
@@ -43,6 +43,27 @@ BEGIN {
 	blankline = 0
 }
 
+# Inline HTML
+/^[[:blank:]]*<\/?[[:alnum:]]+/ {
+	print
+	next
+}
+
+# Auto-escape &
+/&/ {
+	ampstart = 0
+	while (match(substr($0, ampstart + 1), /&/)) {
+		ampstart += RSTART
+		if (match(substr($0, ampstart), /&[[:alnum:]#]+;/)) { continue }
+
+		$0 = substr($0, 1, ampstart - 1) "&amp;" substr($0, ampstart + 1)
+	}
+}
+# Auto-escape <
+/</ {
+	gsub(/</, "\\&lt;")
+}
+
 # Blockquote Part 1/2
 /^>[[:blank:]]*$/ { next }
 /^> / {
@@ -61,12 +82,6 @@ BEGIN {
 	}
 }
 
-# Inline HTML
-/^[[:blank:]]*<\/?[[:alnum:]]+/ {
-	print
-	next
-}
-
 # Horizontal rules
 /^(-|\*|_) ?(-|\*|_) ?(-|\*|_|[[:blank:]])+$/ {
 	print "<hr>"
@@ -76,7 +91,7 @@ BEGIN {
 
 # Line break
 /  $/ {
-	sub(/  $/, "</br>")
+	sub(/[[:blank:]]*  $/, "</br>")
 }
 
 # atx-style headers
@@ -124,11 +139,10 @@ function abs(x) { return ((x < 0) ? -x : x) }
 	}
 	$0 = substr($0, RSTART + RLENGTH)
 }
-lengthStack("list-level") > 0 { blankline = 1 }
 
 # Paragraphs
-prev_blankline && !blankline && lengthStack("bq-level") == 0 { print "<p>" }
-!prev_blankline && blankline && lengthStack("bq-level") == 0 { print "</p>" }
+prev_blankline && !blankline && lengthStack("bq-level") == 0 && lengthStack("list-level") == 0 { print "<p>" }
+!prev_blankline && blankline && lengthStack("bq-level") == 0 && lengthStack("list-level") == 0 { print "</p>" }
 
 # Blockquote Part 2/2
 blankline {
@@ -138,20 +152,26 @@ blankline {
 	}
 }
 
-# Auto-escape &
-/&/ {
-	ampstart = 0
-	while (match(substr($0, ampstart + 1), /&/)) {
-		ampstart += RSTART
-		if (match(substr($0, ampstart), /&[[:alnum:]#]+;/)) { continue }
+# Links
+/\[[^\]]*\]\([^)]*\)/ {
+	while (match($0, /\[[^\]]*\]\(/)) {
+		astart = RSTART
+		inner_anchor = substr($0, RSTART + 1, RLENGTH - 3)
 
-		$0 = substr($0, 1, ampstart - 1) "&amp;" substr($0, ampstart + 1)
+		aend = astart + RLENGTH - 1
+		match(substr($0, astart), /\]\([^)]*)/)
+		aend += RLENGTH - 2
+		href = substr($0, astart + RSTART + 1, RLENGTH - 3)
+
+		title = ""
+		if (match(href, /"[^"]*"[[:blank:]]*$/)) {
+			title = " title=" substr(href, RSTART, RLENGTH)
+			href  = substr(href, 1, RSTART - 1)
+		}
+
+		$0 = substr($0, 1, astart - 1) "<a href=\"" href "\"" title ">" inner_anchor "</a>" substr($0, aend + 1)
 	}
 }
-# Auto-escape <
-/</ {
-	gsub(/</, "\\&lt;")
-}
 
 # Emphasis
 /__.+__/ {
-- 
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