From ace5aa5c97ff5965354f6e350a15b8e7295c9c91 Mon Sep 17 00:00:00 2001
From: Case Duckworth
Date: Sat, 23 May 2020 19:45:21 -0500
Subject: Add usage()

---
 bollux | 32 +++++++++++++++++++++++++++-----
 1 file changed, 27 insertions(+), 5 deletions(-)

diff --git a/bollux b/bollux
index 05c916b..b63e645 100755
--- a/bollux
+++ b/bollux
@@ -4,14 +4,36 @@
 # License: MIT
 # Version: -0.7
 
+# set -euo pipefail              # strict mode
+
 ### constants ###
 PRGN="${0##*/}"                # program name
-DLDR="${BOLLUX_DOWNDIR:-.}"    # where to download
-LOGL="${BOLLUX_LOGLEVEL:-3}"   # log level
-MAXR="${BOLLUX_MAXREDIR:-5}"   # max redirects
-PORT="${BOLLUX_PORT:-1965}"    # port number
-PROT="${BOLLUX_PROTO:-gemini}" # protocol
+DLDR="${BOLLUX_DOWNDIR:=.}"    # where to download
+LOGL="${BOLLUX_LOGLEVEL:=3}"   # log level
+MAXR="${BOLLUX_MAXREDIR:=5}"   # max redirects
+PORT="${BOLLUX_PORT:=1965}"    # port number
+PROT="${BOLLUX_PROTO:=gemini}" # protocol
 RDRS=0                         # redirects
+VRSN=-0.7                      # version number
+
+# shellcheck disable=2120
+bollux_usage() {
+	cat <<END_USAGE >&2
+	$PRGN ($VRSN): a bash gemini client
+	usage:
+		$PRGN [-h]
+		$PRGN [-L LVL] [URL]
+	options:
+		-h	show this help
+		-L LVL	set the loglevel to LVL.
+			Default: $BOLLUX_LOGLEVEL
+			The loglevel is between 0 and 5, with
+			lower levels being more dire.
+	parameters:
+		URL	the URL to navigate view or download
+END_USAGE
+	exit "${1:-0}"
+}
 
 # LOGLEVELS:
 # 0 - application fatal error
-- 
cgit 1.4.1-21-gabe81