X-Git-Url: https://git.armaanb.net/?a=blobdiff_plain;f=fortune;h=afb967c5833679af35705ec5e21b64a63731ff39;hb=26ce4f633da6e65105ff9d9046b760d28a4a3809;hp=a8589a5f9e6a5ba8c4af5d12501becaf16c7270e;hpb=48374cb189a58ab6a44871c7c744a1f67f986089;p=bin.git

diff --git a/fortune b/fortune
index a8589a5..afb967c 100755
--- a/fortune
+++ b/fortune
@@ -2,22 +2,28 @@
 # Fortune implementation in POSIX sh/awk
 
 usage() {
-  echo 'Usage: fortune [OPTIONS]
+		echo 'Usage: fortune [OPTIONS]
 a simple POSIX sh/awk implementation of fortune
 
-  -h, --help                    show this help message
-  -l, --list                    list installed cookie files
-  -c FILE, --cookie FILE        specify cookie file
-  -n LENGTH, --min LENGTH       specify min fortune length
-  -N LENGTH, --max LENGTH       specify max fortune length
+	-h, --help                    show this help message
+	-l, --list                    list installed cookie files
+	-c FILE, --cookie FILE        specify cookie file
+	-n LENGTH, --min LENGTH       specify min fortune length
+	-N LENGTH, --max LENGTH       specify max fortune length
 
-  fortune looks for fortunes in $FORTUNEDIR, which defaults to
-  /usr/share/fortune.
+	fortune looks for fortunes in $FORTUNEDIR, which defaults to
+	/usr/share/fortune.
 
 Exit codes:
-  0    success
-  1    argument error
-  2    parse error'
+	0    success
+	1    generic error
+	2    argument parsing error'
+}
+
+parse_err() {
+		echo "$1"
+		$2
+		exit 2
 }
 
 DIR=${FORTUNEDIR:-"/usr/share/fortune/"}
@@ -26,64 +32,64 @@ MAXLENGTH=1000000000000
 MINLENGTH=0
 
 while [ "$1" != "" ]; do
-  case $1 in
-    -h | --help)
-      usage
-      exit
-      ;;
-    -c | --cookie)
-      FILE=$DIR/$2
-      ;;
-    -n | --min)
-      MINLENGTH=$2
-      ;;
-    -N | --max)
-      MAXLENGTH=$2
-      ;;
-    -l | --list)
-      ls -1 $DIR
-      exit
-      ;;
-    *)
-      echo "ERROR: unknown option \"$1\""
-      usage
-      exit 1
-      ;;
-  esac
-  shift 2
+		case $1 in
+				-h | --help)
+						usage
+						exit
+						;;
+				-c | --cookie)
+						FILE=$DIR/$2
+						;;
+				-n | --min)
+						MINLENGTH=$2
+						;;
+				-N | --max)
+						MAXLENGTH=$2
+						;;
+				-l | --list)
+						ls -1 $DIR
+						exit
+						;;
+				*)
+						parse_err "ERROR: unknown option \"$1\"" usage
+						;;
+		esac
+		shift 2
 done
 
 [ "$MAXLENGTH" -lt "$MINLENGTH" ] && {
-  echo "ERROR: maximum length is less than minimum length"
-  exit 2
+		parse_err "ERROR: maximum length is less than minimum length"
 }
 
 [ -d "$FILE" ] && {
-  echo "ERROR: directory given, please provide a file or glob of files"
-  exit 2
+		parse_err "ERROR: directory given, please provide a file or glob of files"
+}
+
+[ "$(find $FILE -maxdepth 1 -print -quit 2> /dev/null)" ] || {
+		parse_err "ERROR: no such file or directory"
 }
 
 awk -v maxlen=$MAXLENGTH -v minlen=$MINLENGTH \
-'BEGIN {
-  f++
+		'BEGIN {
+	f++
 }
 
 $1 == "%" {
-  len = length(fortunes[f])
-  if ( len>maxlen || len<minlen ) {
-    fortunes[f] = ""
-  } else {
-    f++
-  }
+	len = length(fortunes[f])
+	if ( len>maxlen || len<minlen ) {
+		fortunes[f] = ""
+	} else {
+		f++
+	}
 }
 
 {
-  sub("%", "")
-  fortunes[f] = fortunes[f] (length(fortunes[f])?"\n":"") $0
+	sub("%", "")
+	fortunes[f] = fortunes[f] (length(fortunes[f])?"\n":"") $0
 }
 
 END {
-  "date +%N" | getline time
-  srand(time)
-  print fortunes[int(rand() * (f - 2)) + 1]
+	"od -A n -t d -N 3 /dev/urandom" | getline seed
+	srand(seed)
+	print fortunes[int(rand() * (f - 2)) + 1]
 }' $FILE