From 4d44e2f8b58c3e4a34c44fad933945b33d7e1001 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Thu, 27 Dec 2018 03:39:24 -0500
Subject: tools/shman.sh: Implement SYNOPSIS

---
diff --git a/tools/shman.sh b/tools/shman.sh
index 953965a..57fc974 100755
--- a/tools/shman.sh
+++ b/tools/shman.sh
@@ -70,10 +70,12 @@ gen_doc_func()
 {
 	local sym="${1}"
 	local doc="${2}"
-	shift 2
+	local shso="${3}"
+	shift 3
 	local cmd=
 	local args=
 	local sect_name=
+	local sect_syn=
 	local sect_desc=
 	local opt=
 	local optarg=
@@ -91,9 +93,12 @@ gen_doc_func()
 	local pure=
 	local sect_attr=
 
-	# TODO: SYNOPSIS
-
 	sect_name=".SH NAME${LF}${sym}"
+	sect_syn=".SH SYNOPSIS${LF}"
+	if [ -n "${shso}" ]; then
+		sect_syn="${sect_syn}.B . ${shso}${LF}.P${LF}"
+	fi
+	sect_syn="${sect_syn}.B ${sym}${LF}"
 	while read -r cmd args; do
 		case "${cmd}" in
 			'brief')
@@ -111,12 +116,13 @@ gen_doc_func()
 				fi
 				first_opt=false
 				if [ "x${optarg}" = 'x-' ]; then
-					opt=".B ${opt}"
+					opt="\\fB${opt}\\fP"
 				else
-					opt=".BI ${opt} \\ ${optarg}"
+					opt="\\fB${opt}\\fP \\fI${optarg}\\fP"
 				fi
 				sect_opts="${sect_opts}.TP${LF}${opt}${LF}"
 				sect_opts="${sect_opts}${desc}${LF}"
+				sect_syn="${sect_syn}[${opt}]${LF}"
 				;;
 			'operand')
 				read -r opd req desc <<-EOF
@@ -128,6 +134,13 @@ gen_doc_func()
 				first_opd=false
 				sect_opds="${sect_opds}.TP${LF}.I ${opd}${LF}"
 				sect_opds="${sect_opds}${desc}${LF}"
+				case "${req}" in
+					'r'*|'R'*|'y'*|'Y'*)
+						opd="\\fI${opd}\\fP";;
+					*)
+						opd="[\\fI${opd}\\fP]";;
+				esac
+				sect_syn="${sect_syn}${opd}${LF}"
 				;;
 			'stdin')
 				sect_in=".SH STDIN${LF}${args}"
@@ -155,7 +168,7 @@ gen_doc_func()
 		${doc}
 		EOF
 
-	printf '%s\n\n' "${sect_name}" "${sect_desc}" \
+	printf '%s\n\n' "${sect_name}" "${sect_syn}" "${sect_desc}" \
 		"${sect_opts}" "${sect_opds}" "${sect_in}" "${sect_ret}" \
 		"${sect_out}" "${sect_err}" "${sect_attr}"
 }
@@ -165,11 +178,12 @@ gen_doc()
 	local date="${1}"
 	local source="${2}"
 	local manual="${3}"
-	local sym="${4}"
-	local is_func="${5}"
-	local doc="${6}"
-	local out_dir="${7}"
-	shift 7
+	local shso="${4}"
+	local sym="${5}"
+	local is_func="${6}"
+	local doc="${7}"
+	local out_dir="${8}"
+	shift 8
 	local line=
 	local doc_joined=''
 	local sym_upper=
@@ -196,7 +210,7 @@ gen_doc()
 		if ${is_func}; then
 			printf '.TH %s 3 "%s" "%s" "%s"\n\n' \
 				"${sym_upper}" "${date}" "${source}" "${manual}"
-			gen_doc_func "${sym}" "${doc}"
+			gen_doc_func "${sym}" "${doc}" "${shso}"
 		fi
 	} >"${out_dir}/${sym}.3"
 }
@@ -206,8 +220,9 @@ parse_docs()
 	local file="${1}"
 	local source="${2}"
 	local manual="${3}"
-	local out_dir="${4}"
-	shift 4
+	local shso="${4}"
+	local out_dir="${5}"
+	shift 5
 	local date=
 	local line=
 	local doc=''
@@ -236,7 +251,7 @@ parse_docs()
 		esac
 		case "${line}" in [!a-zA-Z]*|*[!a-zA-Z0-9_]*) continue;; esac
 		if ${got_doc}; then
-			gen_doc "${date}" "${source}" "${manual}" \
+			gen_doc "${date}" "${source}" "${manual}" "${shso}" \
 				"${line}" ${is_func} "${doc}" "${out_dir}"
 			if [ -n "${tags}" ]; then
 				if ${is_func}; then
@@ -290,11 +305,12 @@ main()
 	local opt=
 	local source='Shell'
 	local manual='Shell Functions'
+	local shso=''
 	local out_dir='.'
 	local tags=''
 	local f=
 
-	while getopts 'hVs:m:d:t:' opt; do
+	while getopts 'hVs:m:S:d:t:' opt; do
 		case "${opt}" in
 			'h')
 				help
@@ -310,6 +326,9 @@ main()
 			'm')
 				manual="${OPTARG}"
 				;;
+			'S')
+				shso="${OPTARG}"
+				;;
 			'd')
 				out_dir="${OPTARG}"
 				;;
@@ -329,7 +348,7 @@ main()
 		exec 3>"${tags}"
 	fi
 	for f in "${@}"; do
-		parse_docs "${f}" "${source}" "${manual}" "${out_dir}"
+		parse_docs "${f}" "${source}" "${manual}" "${shso}" "${out_dir}"
 	done
 	if [ -n "${tags}" ]; then
 		exec 3>&-
--
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