ns

#!/usr/bin/env bash

# ns is a companion script to the notes command
# ns stands for notes-sed
# and is used to print out text in the notes files between two patterns
#
# so for instance, if I edited the current notes file by just doing $ notes (without any arguments)
# I could add a bunch of text between two labels, like for instance:
# BASH_TIPS
# some amount of text on as many lines as you want
# ...
# END_BASH_TIPS
#
# I could then do the $ ns bash_tips end_bash_tips
# (and all the text in between would then print out)
# (sort of like grep on steroids!)
# 
# Implementation:
# to account for the very real possibility that there could be more than one of either of the patterns,
# this script first finds the very first line of the first argument
# and the very last line of the second argument

if [ -z "$1" ]; then
  echo "usage: ns pattern1 pattern2"
  exit 0
fi

p1="$1"
p2="$2"

tmpf=$(mktemp file.XXX)
notes -a > $tmpf

l1=$(grep -ni "$p1" $tmpf | head -1 | cut -d: -f1)
l2=$(grep -ni "$p2" $tmpf | tail -1 | cut -d: -f1)

sed -n "${l1},${l2}p" $tmpf
rm $tmpf