datesh

#!/usr/bin/env bash
#
# ############################################################################
# Project: scripts (none)
# File...: datesh
# Created: Friday, 20/09/2019-01:13:35
# Author.: @fbnmtz, (fabiano.matoz@gmail.com)
# ~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~~·~·~·~·~·~·~·~
# Last Modified: Saturday, 2023/06/10 - 22:11:01
# Modified By..: @fbnmtz, (fabiano.matoz@gmail.com)
# ~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~~·~·~·~·~·~·~·~
# Version: 0.1.2.21
# ~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~~·~·~·~·~·~·~·~
# Description: 
#  >
# ############################################################################
# HISTORY:
#

default_format="+%Y/%m/%d-%H:%M:%S"

while [ "$1" != "" ]; do
    # flags -f -D -T
    # date formats: -br -us
    case "$1" in
        # str formated to be used in filenames (sub '/',':' for '.')
        -f | --formated) 
            filename_format="| tr -d ' ' | tr -s ',' '.' | tr -s '/' '.' | tr -s ':' '.'" ;;
        # return only date
        -D | --date) 
            cut_date_or_time="| tr -d ' ' | cut -d '-' -f1" ;;
        # return only time
        -T | --time) 
            cut_date_or_time="| tr -d ' ' | cut -d '-' -f2" ;;
        
        # US format 
        -us) args="+%Y/%m/%d-%H:%M:%S" ;;
        # BR format 
        -br) args="+%d/%m/%Y-%H:%M:%S" ;;
        # header format (for bins header comment)
        -hr|--header) args="+%A, %Y/%m/%d - %H:%M:%S" ;;
        # date parts
            -y) args="+%y" ;; # year (xx)
            -Y) args="+%Y" ;; # year (xxxx)
            -m) args="+%m" ;; # month
            -d) args="+%d" ;; # day

        # default format
        *) args="$default_format"
    esac
    shift
done

# set format when no arg given
[ -z "$args" ] && args="$default_format"

eval "date \"$args\"" $cut_date_or_time $filename_format