From b58ff155f74cbe76f51aa0074d8d2218de774613 Mon Sep 17 00:00:00 2001
From: xero <x@xero.nu>
Date: Sat, 8 Mar 2014 22:05:02 -0500
Subject: reorganize scripts, and system automation scripts for hybrid
 graphics, touchpad management, and file comparison

---
 code/fun/pipes | 108 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100755 code/fun/pipes

(limited to 'code/fun/pipes')

diff --git a/code/fun/pipes b/code/fun/pipes
new file mode 100755
index 0000000..5cc366e
--- /dev/null
+++ b/code/fun/pipes
@@ -0,0 +1,108 @@
+#!/bin/bash
+# The author of the original script is unknown to me. The first entry I can
+# find was posted at 2010-03-21 09:50:09 on Arch Linux Forums (doesn't mean the
+# poster is the author at all):
+#
+#   https://bbs.archlinux.org/viewtopic.php?pid=728932#p728932
+#
+# I, Yu-Jie Lin, made a few changes and additions:
+#
+#   -p, -t, -R, and -C
+#
+#   Screenshot: http://flic.kr/p/dRnLVj
+#   Screencast: http://youtu.be/5XnGSFg_gTk
+#
+# And push the commits to Gist:
+#
+#   https://gist.github.com/4689307
+#
+# I, Devin Samarin, made a few changes and additions:
+#
+#   -r can be 0 to mean "no limit".
+#   Reset cursor visibility after done.
+#   Cleanup for those people who want to quit with ^C
+#
+#   Pushed the changes to https://gist.github.com/4725048
+
+p=1
+f=75 s=13 r=2000 t=0
+w=$(tput cols) h=$(tput lines)
+# ab -> idx = a*4 + b
+# 0: up, 1: right, 2: down, 3: left
+# 00 means going up   , then going up   -> ┃
+# 12 means going right, then going down -> ┓
+sets=(
+    "┃┏ ┓┛━┓  ┗┃┛┗ ┏━"
+    "│╭ ╮╯─╮  ╰│╯╰ ╭─"
+    "│┌ ┐┘─┐  └│┘└ ┌─"
+    "║╔ ╗╝═╗  ╚║╝╚ ╔═"
+)
+v="${sets[0]}"
+RNDSTART=0
+NOCOLOR=0
+
+OPTIND=1
+while getopts "p:t:f:s:r:RCh" arg; do
+case $arg in
+    p) ((p=(OPTARG>0)?OPTARG:p));;
+    t) ((OPTARG>=0 && OPTARG<${#sets[@]})) && v="${sets[OPTARG]}";;
+    f) ((f=(OPTARG>19 && OPTARG<101)?OPTARG:f));;
+    s) ((s=(OPTARG>4 && OPTARG<16 )?OPTARG:s));;
+    r) ((r=(OPTARG>=0)?OPTARG:r));;
+    R) RNDSTART=1;;
+    C) NOCOLOR=1;;
+    h) echo -e "Usage: $(basename $0) [OPTION]..."
+        echo -e "Animated pipes terminal screensaver.\n"
+        echo -e " -p [1-]\tnumber of pipes (D=1)."
+        echo -e " -t [0-$((${#sets[@]} - 1))]\ttype of pipes (D=0)."
+        echo -e " -f [20-100]\tframerate (D=75)."
+        echo -e " -s [5-15]\tprobability of a straight fitting (D=13)."
+        echo -e " -r LIMIT\treset after x characters, 0 if no limit (D=2000)."
+        echo -e " -R \t\trandom starting point."
+        echo -e " -C \t\tno color."
+        echo -e " -h\t\thelp (this screen).\n"
+        exit 0;;
+    esac
+done
+
+cleanup() {
+    tput rmcup
+    tput cnorm
+    exit 0
+}
+trap cleanup SIGHUP SIGINT SIGTERM
+
+for (( i=1; i<=p; i++ )); do
+    c[i]=$((i%8)) n[i]=0 l[i]=0
+    ((x[i]=RNDSTART==1?RANDOM*w/32768:w/2))
+    ((y[i]=RNDSTART==1?RANDOM*h/32768:h/2))
+done
+
+tput smcup
+tput reset
+tput civis
+while ! read -t0.0$((1000/f)) -n1; do
+    for (( i=1; i<=p; i++ )); do
+        # New position:
+        ((${l[i]}%2)) && ((x[i]+=-${l[i]}+2,1)) || ((y[i]+=${l[i]}-1))
+
+        # Loop on edges (change color on loop):
+        ((${x[i]}>w||${x[i]}<0||${y[i]}>h||${y[i]}<0)) && ((c[i]=RANDOM%8))
+        ((x[i]=(x[i]+w)%w))
+        ((y[i]=(y[i]+h)%h))
+
+        # New random direction:
+        ((n[i]=RANDOM%s-1))
+        ((n[i]=(${n[i]}>1||${n[i]}==0)?${l[i]}:${l[i]}+${n[i]}))
+        ((n[i]=(${n[i]}<0)?3:${n[i]}%4))
+
+        # Print:
+        tput cup ${y[i]} ${x[i]}
+        [[ $NOCOLOR == 0 ]] && echo -ne "\033[1;3${c[i]}m"
+        echo -n "${v:l[i]*4+n[i]:1}"
+        l[i]=${n[i]}
+    done
+    ((r>0 && t*p>=r)) && tput reset && tput civis && t=0 || ((t++))
+done
+
+cleanup
\ No newline at end of file
-- 
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