dot

commit a69481e9b52fd81c8e87cd0871547dfda18c44c8
parent 4639d4cb889c00f4309d7a46bb7bf090144b72bb
Author: Josuah Demangeon <josuah.demangeon@gandi.net>
Date:   Sat, 19 Aug 2017 11:06:36 +0200

shell/bin/txt: notation-syntax aware formatting script

Diffstat:
A
shell/bin/txt
 | 
93
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
M
shell/profile
 | 
2
+-

2 files changed, 94 insertions(+), 1 deletion(-)
diff --git a/shell/bin/txt b/shell/bin/txt
@@ -0,0 +1,93 @@
+awk '
+
+BEGIN {
+	RS="\n\n+"
+	margin["li"] = 2
+}
+
+
+# litterals
+
+/^---\n.*\n---$/ {
+	print "\n" $0
+	next
+}
+
+/^---\n/ {
+	block = "pre"
+}
+
+/\n---$/ {
+	block = ""
+	print "\n" $0
+	next
+}
+
+block == "pre" {
+	print "\n" $0
+	next
+}
+
+
+# title
+
+NR == 1 {
+	sub("\n-+", "", $0)
+	print
+	for (i = 0; i < 80; i++)
+		printf "-"
+	print ""
+	next
+}
+
+
+# heading
+
+sub("^--- +", "", $0) {
+	d = 0
+
+	# parse
+	while (sub("[0-9#]+\\.", "", $0)) d++
+	if    (sub("[0-9#]+ ",   "", $0)) d++
+	for (; d < depth; depth--)
+		levels[depth] = 0
+	depth = d
+	sub("^[-. ]*", "", $0)
+	sub(" *-* *$", "", $0)
+
+	# print
+	row = "--- "
+	for (d = 1; d < depth; d++)
+		row = row levels[d] "."
+	row = row "" ++levels[d] " -- " $0 " "
+	for (i = length(row); i < 80; i++)
+		row = row "-"
+
+	print "\n" row
+	next
+}
+
+{
+	# wrap lines
+
+	sub("^[\t ]*", "", $0)
+	gsub("\n[\t ]*", " ", $0)
+	gsub(" +", " ", $0)
+	gsub("\\. ", ".  ", $0)
+	gsub("\\? ", "?  ", $0)
+	gsub("\\! ", "!  ", $0)
+
+	width = 80 - margin[block]
+
+	print ""
+	while (length($0) > 0) {
+		row = substr($0, 1, width)
+		if (length(row) >= width)
+			sub(" [^ ]*$", "", row)
+
+		$0 = substr($0, length(row) + 1)
+		sub(" *", "")
+
+		print row
+	}
+}' "$@"
diff --git a/shell/profile b/shell/profile
@@ -18,4 +18,4 @@ export EMAIL='mail@josuah.net'
 export EDITOR=vim VISUAL=$EDITOR
 export PAGER=less MANPAGER=$PAGER
 
-export TERM=vt320
+export TERM=xterm-256color