include sf as file

This commit is contained in:
Denis Lehmann 2022-01-12 02:20:43 +01:00
parent 0c5433a49b
commit f109fbfcc3
4 changed files with 222 additions and 5 deletions

View file

@ -12,8 +12,7 @@ sfexamples+=("ffconv mp3 opus;Convert all mp3 files to opus")
sfexamples+=("ffconv -m trash mp4 mkv;Convert all mp4 to mkv and move the original ones to './trash'")
sfexamples+=("ffconv -d ~/music -l wma mp3;List all wma files from '~/music' and ask for converting them to mp3")
# sf -- script framework (https://github.com/Deleh/sf)
sftrs=$'\e[0m';sftbf=$'\e[1m';sftdim=$'\e[2m';sftul=$'\e[4m';sftblink=$'\e[5m';sftinv=$'\e[7m';sfthide=$'\e[8m';sftclr=$'\e[1A\e[K';sftk=$'\e[30m';sftr=$'\e[31m';sftg=$'\e[32m';sfty=$'\e[33m';sftb=$'\e[34m';sftm=$'\e[35m';sftc=$'\e[36m';sftw=$'\e[97m';function sferr { echo "${sftbf}${sftr}ERROR${sftrs} $1";[ -z "$2" ]&&exit 1;};function sfwarn { echo "${sftbf}${sfty}WARNING${sftrs} $1";};function sfask { if [ "$2" == "" ];then read -p "$1? [${sftbf}Y${sftrs}/${sftbf}n${sftrs}] " sfin;[[ "$sfin" =~ y|Y|^$ ]]&&sfin=true||sfin=false;else read -p "$1? [${sftbf}y${sftrs}/${sftbf}N${sftrs}] " sfin;[[ "$sfin" =~ n|N|^$ ]]&&sfin=false||sfin=true;fi;};function sfget { [ "$2" != "" ]&&read -p "$1 [${sftbf}$2${sftrs}]: " sfin||read -p "$1: " sfin;[ "$sfin" == "" ]&&[ "$2" != "" ]&&sfin="$2";};function _sferr { echo "${sftbf}${sftr}SF PARSE ERROR${sftrs} $1";exit 1;};OLDIFS=$IFS;IFS=";";_sfphead="";_sfpdesc="";_sfodesc="";_sfexamples="";_sfpargs=();declare -A _sfflags;declare -A _sfargs;for a in "${sfargs[@]}";do _sfsubst=${a//";"};_sfcount="$(((${#a} - ${#_sfsubst})))";if [ $_sfcount -eq 1 ];then read -r -a _sfparsearr<<<"${a}";_sfpargs+=("${_sfparsearr[0]}");_sfphead="$_sfphead ${_sfparsearr[0]}";_sfpdesc="$_sfpdesc ${_sfparsearr[0]};${_sfparsearr[1]}\n";elif [ $_sfcount -eq 2 ];then read -r -a _sfparsearr<<<"${a}";_sfflags["-${_sfparsearr[1]}"]="${_sfparsearr[0]}";_sfflags["--${_sfparsearr[0]}"]="${_sfparsearr[0]}";declare ${_sfparsearr[0]}=false;_sfodesc="$_sfodesc -${_sfparsearr[1]}, --${_sfparsearr[0]};${_sfparsearr[2]}\n";elif [ $_sfcount -eq 4 ];then read -r -a _sfparsearr<<<"${a}";_sfargs["-${_sfparsearr[1]}"]="${_sfparsearr[0]}";_sfargs["--${_sfparsearr[0]}"]="${_sfparsearr[0]}";declare ${_sfparsearr[0]}="${_sfparsearr[3]}";_sfodesc="$_sfodesc -${_sfparsearr[1]}, --${_sfparsearr[0]} ${_sfparsearr[2]};${_sfparsearr[4]} (default: ${_sfparsearr[3]})\n";else _sferr "Wrong argument declaration: $a";fi;done;for e in "${sfexamples[@]}";do _sfsubst=${e//";"};_sfcount="$(((${#e} - ${#_sfsubst})))";if [ $_sfcount -eq 1 ];then read -r -a _sfparsearr<<<"${e}";_sfexamples="$_sfexamples ${_sfparsearr[0]};${_sfparsearr[1]}\n";else _sferr "Wrong example declaration: $e";fi;done;IFS=$OLDIFS;function _sfusage { echo -n "Usage: $(basename $0)";[ "$_sfodesc" != "" ]&&echo -n " [OPTIONS]";echo -e "$_sfphead";[ ! -z ${sfdesc+x} ]&&echo -e "\n$sfdesc";if [ "$_sfpdesc" != "" ];then echo -e "\nPOSITIONAL ARGUMENTS";echo -e "$_sfpdesc"|column -c 80 -s ";" -t -W 2;fi;if [ "$_sfodesc" != "" ];then echo -e "\nOPTIONS";echo -e "$_sfodesc"|column -c 80 -s ";" -t -W 2;fi;if [ "$_sfexamples" != "" ];then echo -e "\nEXAMPLES";echo -e "$_sfexamples"|column -c 80 -s ";" -t -W 2;fi;if [ ! -z ${sfextra+x} ];then echo -e "\n$sfextra";fi;exit 0;};for a in "$@";do [ "$a" == "-h" ]||[ "$a" == "--help" ]&&_sfusage;done;while(("$#"));do if [ ! -z ${_sfflags["$1"]} ];then declare ${_sfflags["$1"]}=true;elif [ ! -z ${_sfargs["$1"]} ];then if [ -n "$2" ]&&[ "${2:0:1}" != "-" ];then declare ${_sfargs["$1"]}="$2";shift;else sferr "Argument for '$1' missing";fi;else if [ "${1:0:1}" == "-" ];then sferr "Unsupported argument: $1";else if [ "${#_sfpargs[@]}" != 0 ];then declare ${_sfpargs[0]}="$1";_sfpargs=("${_sfpargs[@]:1}");else sferr "Too many positional arguments";fi;fi;fi;shift;done;if [ ${#_sfpargs[@]} != 0 ];then for p in "${_sfpargs[@]}";do sferr "Positional argument '$p' missing" 0;done;exit 1;fi;unset a e _sfphead _sfpdesc _sfodesc _sfexamples _sfpargs _sfflags _sfargs _sferr _sfusage
source "$(dirname $0)/../lib/sf"
# Handle default directory
[ "$directory" == "current work directory" ] && directory="."

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@ -1,6 +1,6 @@
#!/usr/bin/env bash
# sf variables
# sf
sfdesc="Extract a part of a file."
sfargs+=("FILE;File which will be cutted")
sfargs+=("from;f;TIMESTAMP/SECONDS;0;Extract from TIMESTAMP/SECONDS")
@ -9,8 +9,7 @@ sfargs+=("to;t;TIMESTAMP/DURATION;end;Extract to TIMESTAMP/DURATION")
sfexamples+=("ffcut -t 5 video.mp4 -o cut.webm;Extract the first five seconds of 'video.mp4' to 'cut.webm'")
sfexamples+=("ffcut -f 00:10:30 -t 00:14:15 video.mp4;Extract the part from 00:10:30 to 00:14:15 from 'video.mp4'")
# sf -- script framework (https://github.com/Deleh/sf)
sftrs=$'\e[0m';sftbf=$'\e[1m';sftdim=$'\e[2m';sftul=$'\e[4m';sftblink=$'\e[5m';sftinv=$'\e[7m';sfthide=$'\e[8m';sftclr=$'\e[1A\e[K';sftk=$'\e[30m';sftr=$'\e[31m';sftg=$'\e[32m';sfty=$'\e[33m';sftb=$'\e[34m';sftm=$'\e[35m';sftc=$'\e[36m';sftw=$'\e[97m';function sferr { echo "${sftbf}${sftr}ERROR${sftrs} $1";[ -z "$2" ]&&exit 1;};function sfwarn { echo "${sftbf}${sfty}WARNING${sftrs} $1";};function sfask { if [ "$2" == "" ];then read -p "$1? [${sftbf}Y${sftrs}/${sftbf}n${sftrs}] " sfin;[[ "$sfin" =~ y|Y|^$ ]]&&sfin=true||sfin=false;else read -p "$1? [${sftbf}y${sftrs}/${sftbf}N${sftrs}] " sfin;[[ "$sfin" =~ n|N|^$ ]]&&sfin=false||sfin=true;fi;};function sfget { [ "$2" != "" ]&&read -p "$1 [${sftbf}$2${sftrs}]: " sfin||read -p "$1: " sfin;[ "$sfin" == "" ]&&[ "$2" != "" ]&&sfin="$2";};function _sferr { echo "${sftbf}${sftr}SF PARSE ERROR${sftrs} $1";exit 1;};OLDIFS=$IFS;IFS=";";_sfphead="";_sfpdesc="";_sfodesc="";_sfexamples="";_sfpargs=();declare -A _sfflags;declare -A _sfargs;for a in "${sfargs[@]}";do _sfsubst=${a//";"};_sfcount="$(((${#a} - ${#_sfsubst})))";if [ $_sfcount -eq 1 ];then read -r -a _sfparsearr<<<"${a}";_sfpargs+=("${_sfparsearr[0]}");_sfphead="$_sfphead ${_sfparsearr[0]}";_sfpdesc="$_sfpdesc ${_sfparsearr[0]};${_sfparsearr[1]}\n";elif [ $_sfcount -eq 2 ];then read -r -a _sfparsearr<<<"${a}";_sfflags["-${_sfparsearr[1]}"]="${_sfparsearr[0]}";_sfflags["--${_sfparsearr[0]}"]="${_sfparsearr[0]}";declare ${_sfparsearr[0]}=false;_sfodesc="$_sfodesc -${_sfparsearr[1]}, --${_sfparsearr[0]};${_sfparsearr[2]}\n";elif [ $_sfcount -eq 4 ];then read -r -a _sfparsearr<<<"${a}";_sfargs["-${_sfparsearr[1]}"]="${_sfparsearr[0]}";_sfargs["--${_sfparsearr[0]}"]="${_sfparsearr[0]}";declare ${_sfparsearr[0]}="${_sfparsearr[3]}";_sfodesc="$_sfodesc -${_sfparsearr[1]}, --${_sfparsearr[0]} ${_sfparsearr[2]};${_sfparsearr[4]} (default: ${_sfparsearr[3]})\n";else _sferr "Wrong argument declaration: $a";fi;done;for e in "${sfexamples[@]}";do _sfsubst=${e//";"};_sfcount="$(((${#e} - ${#_sfsubst})))";if [ $_sfcount -eq 1 ];then read -r -a _sfparsearr<<<"${e}";_sfexamples="$_sfexamples ${_sfparsearr[0]};${_sfparsearr[1]}\n";else _sferr "Wrong example declaration: $e";fi;done;IFS=$OLDIFS;function _sfusage { echo -n "Usage: $(basename $0)";[ "$_sfodesc" != "" ]&&echo -n " [OPTIONS]";echo -e "$_sfphead";[ ! -z ${sfdesc+x} ]&&echo -e "\n$sfdesc";if [ "$_sfpdesc" != "" ];then echo -e "\nPOSITIONAL ARGUMENTS";echo -e "$_sfpdesc"|column -c 80 -s ";" -t -W 2;fi;if [ "$_sfodesc" != "" ];then echo -e "\nOPTIONS";echo -e "$_sfodesc"|column -c 80 -s ";" -t -W 2;fi;if [ "$_sfexamples" != "" ];then echo -e "\nEXAMPLES";echo -e "$_sfexamples"|column -c 80 -s ";" -t -W 2;fi;if [ ! -z ${sfextra+x} ];then echo -e "\n$sfextra";fi;exit 0;};for a in "$@";do [ "$a" == "-h" ]||[ "$a" == "--help" ]&&_sfusage;done;while(("$#"));do if [ ! -z ${_sfflags["$1"]} ];then declare ${_sfflags["$1"]}=true;elif [ ! -z ${_sfargs["$1"]} ];then if [ -n "$2" ]&&[ "${2:0:1}" != "-" ];then declare ${_sfargs["$1"]}="$2";shift;else sferr "Argument for '$1' missing";fi;else if [ "${1:0:1}" == "-" ];then sferr "Unsupported argument: $1";else if [ "${#_sfpargs[@]}" != 0 ];then declare ${_sfpargs[0]}="$1";_sfpargs=("${_sfpargs[@]:1}");else sferr "Too many positional arguments";fi;fi;fi;shift;done;if [ ${#_sfpargs[@]} != 0 ];then for p in "${_sfpargs[@]}";do sferr "Positional argument '$p' missing" 0;done;exit 1;fi;unset a e _sfphead _sfpdesc _sfodesc _sfexamples _sfpargs _sfflags _sfargs _sferr _sfusage
source "$(dirname $0)/../lib/sf"
# Handle missing parameters
[ "$from" == 0 ] && [ "$to" == "end" ] && sferr "Set at least '--from' or '--to'"

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@ -19,6 +19,7 @@
'';
installPhase = ''
install -m 755 -D bin/ffconv $out/bin/ffconv
install -m 644 -D lib/sf $out/lib/sf
'';
};
ffcut = pkgs.stdenv.mkDerivation {
@ -30,6 +31,7 @@
'';
installPhase = ''
install -m 755 -D bin/ffcut $out/bin/ffcut
install -m 644 -D lib/sf $out/lib/sf
'';
};
};

217
lib/sf Normal file
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@ -0,0 +1,217 @@
#!/usr/bin/env bash
# sf -- script framework (https://github.com/Deleh/sf)
# Text formatting variables
sftrs=$'\e[0m'
sftbf=$'\e[1m'
sftdim=$'\e[2m'
sftul=$'\e[4m'
sftblk=$'\e[5m'
sftinv=$'\e[7m'
sfthd=$'\e[8m'
sftclr=$'\e[1A\e[K'
sftk=$'\e[30m'
sftr=$'\e[31m'
sftg=$'\e[32m'
sfty=$'\e[33m'
sftb=$'\e[34m'
sftm=$'\e[35m'
sftc=$'\e[36m'
sftw=$'\e[97m'
# Public output functions
function sferr {
echo "${sftbf}${sftr}ERROR${sftrs} $1"
[ -z "$2" ] && exit 1
}
function sfwarn {
echo "${sftbf}${sfty}WARNING${sftrs} $1"
}
# Public input functions
function sfask {
if [ "$2" == "" ]; then
read -p "$1? [${sftbf}Y${sftrs}/${sftbf}n${sftrs}] " sfin
[[ "$sfin" =~ y|Y|^$ ]] && sfin=true || sfin=false
else
read -p "$1? [${sftbf}y${sftrs}/${sftbf}N${sftrs}] " sfin
[[ "$sfin" =~ n|N|^$ ]] && sfin=false || sfin=true
fi
}
function sfget {
[ "$2" != "" ] && read -p "$1 [${sftbf}$2${sftrs}]: " sfin || read -p "$1: " sfin
[ "$sfin" == "" ] && [ "$2" != "" ] && sfin="$2"
}
# Internal error function
function _sferr {
echo "${sftbf}${sftr}SF PARSE ERROR${sftrs} $1"
exit 1
}
# Declare variables for parsing
OLDIFS=$IFS
IFS=";"
_sfphead=""
_sfpdesc=""
_sfodesc=""
_sfexamples=""
_sfpargs=()
declare -A _sfflags
declare -A _sfargs
# Parse sf arguments
for a in "${sfargs[@]}"; do
# Get amount of ;
_sfsubst=${a//";"}
_sfcount="$(((${#a} - ${#_sfsubst})))"
if [ $_sfcount -eq 1 ]; then
# Read positional argument declaration
read -r -a _sfparsearr <<< "${a}"
# Add to positional argument arry
_sfpargs+=("${_sfparsearr[0]}")
# Set usage header and description
_sfphead="$_sfphead ${_sfparsearr[0]}"
_sfpdesc="$_sfpdesc ${_sfparsearr[0]};${_sfparsearr[1]}\n"
# Flags
elif [ $_sfcount -eq 2 ]; then
# Read flag declaration
read -r -a _sfparsearr <<< "${a}"
# Set mappings
_sfflags["-${_sfparsearr[1]}"]="${_sfparsearr[0]}"
_sfflags["--${_sfparsearr[0]}"]="${_sfparsearr[0]}"
# Set default value
declare ${_sfparsearr[0]}=false
# Set description
_sfodesc="$_sfodesc -${_sfparsearr[1]}, --${_sfparsearr[0]};${_sfparsearr[2]}\n"
# Arguments
elif [ $_sfcount -eq 4 ]; then
# Read argument declaration
read -r -a _sfparsearr <<< "${a}"
# Set mappings
_sfargs["-${_sfparsearr[1]}"]="${_sfparsearr[0]}"
_sfargs["--${_sfparsearr[0]}"]="${_sfparsearr[0]}"
# Set default value
declare ${_sfparsearr[0]}="${_sfparsearr[3]}"
# Set description
_sfodesc="$_sfodesc -${_sfparsearr[1]}, --${_sfparsearr[0]} ${_sfparsearr[2]};${_sfparsearr[4]} (default: ${_sfparsearr[3]})\n"
else
_sferr "Wrong argument declaration: $a"
fi
done
# Parse examples
for e in "${sfexamples[@]}"; do
# Get amount of ;
_sfsubst=${e//";"}
_sfcount="$(((${#e} - ${#_sfsubst})))"
if [ $_sfcount -eq 1 ]; then
# Read example
read -r -a _sfparsearr <<< "${e}"
_sfexamples="$_sfexamples ${_sfparsearr[0]};${_sfparsearr[1]}\n"
else
_sferr "Wrong example declaration: $e"
fi
done
IFS=$OLDIFS
# Usage function
function _sfusage {
echo -n "Usage: $(basename $0)"
[ "$_sfodesc" != "" ] && echo -n " [OPTIONS]"
echo -e "$_sfphead"
[ ! -z ${sfdesc+x} ] && echo -e "\n$sfdesc"
if [ "$_sfpdesc" != "" ]; then
echo -e "\nPOSITIONAL ARGUMENTS"
echo -e "$_sfpdesc" | column -c 80 -s ";" -t -W 2
fi
if [ "$_sfodesc" != "" ]; then
echo -e "\nOPTIONS"
echo -e "$_sfodesc" | column -c 80 -s ";" -t -W 2
fi
if [ "$_sfexamples" != "" ]; then
echo -e "\nEXAMPLES"
echo -e "$_sfexamples" | column -c 80 -s ";" -t -W 2
fi
if [ ! -z ${sfextra+x} ]; then
echo -e "\n$sfextra"
fi
exit 0
}
# Check for help flag
for a in "$@"; do
# Check if help flag ist set
[ "$a" == "-h" ] || [ "$a" == "--help" ] && _sfusage
done
# Parse arguments
while (( "$#" )); do
# Check if flag
if [ ! -z ${_sfflags["$1"]} ]; then
declare ${_sfflags["$1"]}=true
# Check if argument
elif [ ! -z ${_sfargs["$1"]} ]; then
# Check if argument has value
if [ -n "$2" ] && [ "${2:0:1}" != "-" ]; then
declare ${_sfargs["$1"]}="$2"
shift
else
sferr "Argument for '$1' missing"
fi
# Handle positional arguments and wrong arguments/flags
else
# Check if arg starts with -
if [ "${1:0:1}" == "-" ]; then
sferr "Unsupported argument: $1"
else
# Set positional argument
if [ "${#_sfpargs[@]}" != 0 ]; then
declare ${_sfpargs[0]}="$1"
_sfpargs=("${_sfpargs[@]:1}")
else
sferr "Too many positional arguments"
fi
fi
fi
shift
done
# Check if positional arguments left
if [ ${#_sfpargs[@]} != 0 ]; then
for p in "${_sfpargs[@]}"; do
sferr "Positional argument '$p' missing" 0
done
exit 1
fi
# Unset all internal variables and functions
unset a e _sfphead _sfpdesc _sfodesc _sfexamples _sfpargs _sfflags _sfargs _sferr _sfusage