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Copy pathshellpen.sh
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shellpen.sh
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#! /usr/bin/env bash
SHELLPEN_VERSION="2.0.0"
# Private ShellPen variables:
__SHELLPEN_SOURCES=()
__SHELLPEN_PENS=()
__SHELLPEN_EXTENSIONS=()
# Public configurable variable
SHELLPEN_INDENT="${SHELLPEN_INDENT:- }"
shellpen() {
# For branching on whether declare -g / typeset -n are available
local BASH_PRE_43=''
if [ "${BASH_VERSION:0:1}" -lt 4 ]
then
BASH_PRE_43=true
elif [ "${BASH_VERSION:0:1}" -eq 4 ] && [ "${BASH_VERSION:2:1}" -lt 3 ]
then
BASH_PRE_43=true
fi
declare -a __shellpen__args=("$@") # :shared:
declare -a __shellpen__command=("shellpen") # :shared:
# Default single argument to pen creation, e.g. $ shellpen myPen
[ $# -eq 1 ] && [ "$1" != "--version" ] && shellpen pens new "$1" && return $?
if [ $# -eq 0 ]
then
echo "shellpen: Arguments are required but none were provided" >&2
return 1
else
local __shellpen__1="$1"
shift
case "$__shellpen__1" in
"extend")
__shellpen__command+=("extend")
## $ EXTENSIONS extend
## > Extend `shellpen` with custom syntax
__SHELLPEN_EXTENSIONS+=("$*")
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"--version")
__shellpen__command+=("--version")
echo "ShellPen version $SHELLPEN_VERSION"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"--shellpen-private")
__shellpen__command+=("--shellpen-private")
local __shellpen__2="$1"
shift
case "$__shellpen__2" in
"writeSingleCommand")
__shellpen__command+=("writeSingleCommand")
local extensionFunction=''
local extensionReturnCode=''
for extensionFunction in "${__SHELLPEN_EXTENSIONS[@]}"
do
PEN="$SHELLPEN_PEN" $extensionFunction "$@"
extensionReturnCode=$?
if [ $extensionReturnCode -eq 0 ]
then
return 0
elif [ $extensionReturnCode -eq 2 ]
then
# Stop, let it print its error message and halt things
return 2
fi
done
shellpen --shellpen-private writeDSL "$@" || return $?
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"writeShellCommand")
__shellpen__command+=("writeShellCommand")
# Tackle AND, OR, { }, |, etc.
declare -a currentCommand=()
local bracesOpen=false
local commandIsFunctionDeclaration=false # fn is allowed to use curlies
# raw skips this processing, you can include 'AND' ',' etc all you want!
if [ "$1" = raw ]
then
shift
shellpen --shellpen-private writeSingleCommand $*
return $?
fi
while [ $# -gt 0 ]
do
if [ "$1" = '|' ]
then
# Write the current command and chomp off its newline then write this pipe
[ "${#currentCommand[@]}" -gt 0 ] && { shellpen --shellpen-private writeSingleCommand "${currentCommand[@]}" || return $?; currentCommand=(); commandIsFunctionDeclaration=false; __SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]%$NEWLINE}"; }
shellpen --shellpen-private writeSingleCommand append ' | '
elif [ "$1" = 'AND' ]
then
# Write the current command and chomp off its newline then write this &&
[ "${#currentCommand[@]}" -gt 0 ] && { shellpen --shellpen-private writeSingleCommand "${currentCommand[@]}" || return $?; currentCommand=(); commandIsFunctionDeclaration=false; __SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]%$NEWLINE}"; }
shellpen --shellpen-private writeSingleCommand append ' && '
elif [ "$1" = 'OR' ]
then
# Write the current command and chomp off its newline then write this ||
[ "${#currentCommand[@]}" -gt 0 ] && { shellpen --shellpen-private writeSingleCommand "${currentCommand[@]}" || return $?; currentCommand=(); commandIsFunctionDeclaration=false; __SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]%$NEWLINE}"; }
shellpen --shellpen-private writeSingleCommand append ' || '
elif [ "$1" = '{' ] && [ "$commandIsFunctionDeclaration" != true ]
then
# Write the current command and chomp off its newline then write this {
[ "${#currentCommand[@]}" -gt 0 ] && { shellpen --shellpen-private writeSingleCommand "${currentCommand[@]}" || return $?; currentCommand=(); commandIsFunctionDeclaration=false; __SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]%$NEWLINE}"; }
shellpen --shellpen-private writeSingleCommand append '{ '
bracesOpen=true
elif [ "$bracesOpen" = true ] && [ "$1" = '}' ]
then
# Write the current command and chomp off its newline then write this }
[ "${#currentCommand[@]}" -gt 0 ] && { shellpen --shellpen-private writeSingleCommand "${currentCommand[@]}" || return $?; currentCommand=(); commandIsFunctionDeclaration=false; __SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]%$NEWLINE}"; }
shellpen --shellpen-private writeSingleCommand append '}'
bracesOpen=false
elif [ "$1" = ',' ]
then
# Write the current command and chomp off its newline then write this ;
[ "${#currentCommand[@]}" -gt 0 ] && { shellpen --shellpen-private writeSingleCommand "${currentCommand[@]}" || return $?; currentCommand=(); commandIsFunctionDeclaration=false; __SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]%$NEWLINE}"; }
if [ $# -eq 1 ]
then
shellpen --shellpen-private writeSingleCommand append ';'
else
shellpen --shellpen-private writeSingleCommand append '; '
fi
else
[ "${#currentCommand[@]}" -eq 0 ] && [ "$1" = fn ] && commandIsFunctionDeclaration=true
# HACK for caseEsac which does not, at this time, allow for commands to be started with '.'
if [ "${#currentCommand[@]}" -eq 0 ] && [ "$1" = '.' ]
then
currentCommand+=("dot")
else
# Ain't nothin' special, just add it to the command :)
currentCommand+=("$1")
fi
fi
shift
done
if [ "${#currentCommand[@]}" -gt 0 ]
then
shellpen --shellpen-private writeSingleCommand "${currentCommand[@]}" || return $?
fi
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"penWriter")
__shellpen__command+=("penWriter")
[ -z "$SHELLPEN_PEN" ] && { echo "SHELLPEN_PEN name is required to write to source, none provided." >&2; return 1; }
[ -z "$SHELLPEN_PEN_INDEX" ] && { echo "SHELLPEN_PEN_INDEX is required to write to source, none provided." >&2; return 1; }
[ -z "$SHELLPEN_SOURCE_ID" ] && { echo "SHELLPEN_SOURCE_ID identifier is required to write to source, none provided." >&2; return 1; }
if [ -z "$BASH_PRE_43" ]
then
local SHELLPEN_SOURCE_CONTEXT
typeset -n SHELLPEN_SOURCE_CONTEXT="__SHELLPEN_CONTEXT_$SHELLPEN_SOURCE_ID"
local SHELLPEN_SOURCE_CONTEXT_EMPTY
typeset -n SHELLPEN_SOURCE_CONTEXT_EMPTY="__SHELLPEN_CONTEXT_EMPTY_$SHELLPEN_SOURCE_ID"
fi
local NEWLINE=$'\n' # FIXME hack for caseEsac
local INDENT=''
if [ -z "$BASH_PRE_43" ]
then
declare -i SHELLPEN_CONTEXT_DEPTH="${#SHELLPEN_SOURCE_CONTEXT[@]}"
else
eval "declare -i SHELLPEN_CONTEXT_DEPTH=\"\${#__SHELLPEN_CONTEXT_$SHELLPEN_SOURCE_ID[@]}\""
fi
declare -i i=0
while [ $i -lt $SHELLPEN_CONTEXT_DEPTH ]
do
INDENT+="$SHELLPEN_INDENT"
(( i++ ))
done
unset i
local SHELLPEN_CONTEXT_RIGHT_INDEX="$(( SHELLPEN_CONTEXT_DEPTH - 1 ))"
shellpen --shellpen-private writeShellCommand "$@" || return $? # TBH this should be implicitly returned, not sure why - but this makes it work.
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"writeDSL")
__shellpen__command+=("writeDSL")
local __shellpen__3="$1"
shift
case "$__shellpen__3" in
"code")
__shellpen__command+=("code")
## $ DSL code
## > Output the code for the current pen (_does not modify source_)
shellpen --shellpen-private writeDSL --eval-full-stack || return $?
printf '%s' "${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]}"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"toFile")
__shellpen__command+=("toFile")
## $ DSL toFile
## > Append `> [file path]` to the following command
# Because '%s' and similar formatters are so common, look for a '%' formatter (but only one, and not after the --)
local filePath="$1"
shift
local command="$1"
shift
shellpen --shellpen-private writeDSL $command "$@"
# Chomp the newline and replace it with ' > "file path"newline'
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]/%$NEWLINE/ > \"$filePath\"$NEWLINE}"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"elif")
__shellpen__command+=("elif")
## $ DSL elif
## > Add an `elif` to an `if` conditional block
shellpen --shellpen-private writeDSL --write-null-if-last-empty
shellpen --shellpen-private writeDSL --pop
shellpen --shellpen-private writeDSL writeln "elif $*"
shellpen --shellpen-private writeDSL writeln "then"
shellpen --shellpen-private writeDSL --push "fi"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"--eval-full-stack")
__shellpen__command+=("--eval-full-stack")
## $ EXTENSIONS --eval-full-stack
## > Close every item on current stack (_from right to left_)
while [ "$SHELLPEN_CONTEXT_RIGHT_INDEX" -ge 0 ]
do
local depthBeforeEval="$SHELLPEN_CONTEXT_DEPTH"
local lastCommand="$( shellpen --shellpen-private writeDSL --get-last-pushed )"
shellpen --shellpen-private writeDSL --eval-last-pushed
# Recalculate the context depth and right index from the context
if [ -z "$BASH_PRE_43" ]
then
SHELLPEN_CONTEXT_DEPTH="${#SHELLPEN_SOURCE_CONTEXT[@]}"
else
eval "SHELLPEN_CONTEXT_DEPTH=\"\${#__SHELLPEN_CONTEXT_$SHELLPEN_SOURCE_ID[@]}\""
fi
SHELLPEN_CONTEXT_RIGHT_INDEX="$(( SHELLPEN_CONTEXT_DEPTH - 1 ))"
local depthAfterEval="$SHELLPEN_CONTEXT_DEPTH"
[ $depthBeforeEval -eq $depthAfterEval ] && { echo "shellpen [Extension Error] Expected '$lastCommand' to --pop stack" >&2; return 1; }
done
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"fromFile")
__shellpen__command+=("fromFile")
## $ DSL fromFile
## > Append `< "[file path]"` to the following command
local filePath="$1"
shift
local command="$1"
shift
shellpen --shellpen-private writeDSL $command "$@"
# Chomp the newline and replace it with ' < "path"newline'
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]/%$NEWLINE/ < \"$filePath\"$NEWLINE}"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"function")
__shellpen__command+=("function")
## $ DSL function
## > Begin a `function` definition block
local functionName="$1"
# Write the function
shellpen --shellpen-private writeDSL writeln "$functionName() {"
# Push the DSL command to run to CLOSE this block
shellpen --shellpen-private writeDSL --push "}"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"var")
__shellpen__command+=("var")
## $ DSL var
## > Define a variable
if [ $# -eq 1 ]
then
if [[ "$1" =~ ^([^=]+)=([^=]+)$ ]]
then
shellpen --shellpen-private writeDSL writeln "${BASH_REMATCH[1]}=${BASH_REMATCH[2]}"
else
shellpen --shellpen-private writeDSL writeln "$1=''"
fi
elif [ $# -eq 2 ]
then
shellpen --shellpen-private writeDSL writeln "$1=$2"
elif [ $# -eq 3 ] && [ "$2" = '=' ]
then
shellpen --shellpen-private writeDSL writeln "$1=$3"
fi
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"shebang")
__shellpen__command+=("shebang")
## $ DSL shebang
## > Write '#!' hashbang with provided command path (default: `/bin/bash`)
local commandPath=/bin/bash
[ $# -gt 0 ] && commandPath="$*"
shellpen --shellpen-private writeDSL prependln "#! $commandPath"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
":")
__shellpen__command+=(":")
## $ DSL :
## > Output a line containing the `:` null character
shellpen --shellpen-private writeDSL writeln ":"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"fromStdin")
__shellpen__command+=("fromStdin")
## $ DSL fromStdin
## > Append `< [argument]` to the following command
local stdinSource="$1"
shift
local command="$1"
shift
shellpen --shellpen-private writeDSL $command "$@"
# Chomp the newline and replace it with ' < "path"newline'
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]/%$NEWLINE/ < $stdinSource$NEWLINE}"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"prependln")
__shellpen__command+=("prependln")
## $ DSL prependln
## > Prepend a line of text to source output _without indentation_
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="$*${NEWLINE}${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]}"
shellpen --shellpen-private writeDSL --mark-last-not-empty
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"fromText")
__shellpen__command+=("fromText")
## $ DSL fromText
## > Append `<<< "[text]"` to the following command
local string="$1"
shift
local command="$1"
shift
shellpen --shellpen-private writeDSL $command "$@"
# Chomp the newline and replace it with ' <<< "string"newline'
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]/%$NEWLINE/ <<< \"$string\"$NEWLINE}"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"--get-last-pushed")
__shellpen__command+=("--get-last-pushed")
## $ EXTENSIONS --get-last-pushed
## > Get last item pushed onto the current stack
if [ -z "$BASH_PRE_43" ]
then
printf '%s' "${SHELLPEN_SOURCE_CONTEXT[$SHELLPEN_CONTEXT_RIGHT_INDEX]}"
else
eval "printf '%s' \"\${__SHELLPEN_CONTEXT_$SHELLPEN_SOURCE_ID[\$SHELLPEN_CONTEXT_RIGHT_INDEX]}\""
fi
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"int")
__shellpen__command+=("int")
## $ DSL int
## > Define an integer variable
local globalArgument=''
[ "$1" = '-g' ] && { globalArgument='-g '; shift; }
if [ $# -eq 1 ]
then
if [[ "$1" =~ ^([^=]+)=([^=]+)$ ]]
then
shellpen --shellpen-private writeDSL writeln "declare ${globalArgument}-i ${BASH_REMATCH[1]}=${BASH_REMATCH[2]}"
else
shellpen --shellpen-private writeDSL writeln "declare ${globalArgument}-i $1"
fi
elif [ $# -eq 2 ]
then
shellpen --shellpen-private writeDSL writeln "declare ${globalArgument}-i $1=$2"
elif [ $# -eq 3 ] && [ "$2" = '=' ]
then
shellpen --shellpen-private writeDSL writeln "declare ${globalArgument}-i $1=$3"
fi
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"do")
__shellpen__command+=("do")
## $ DSL do
## > Syntax sugar (_does not modify source code_)
# No-op
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"local")
__shellpen__command+=("local")
## $ DSL local
## > Define a local variable
if [ $# -eq 1 ]
then
if [[ "$1" =~ ^([^=]+)=([^=]+)$ ]]
then
shellpen --shellpen-private writeDSL writeln "local ${BASH_REMATCH[1]}=${BASH_REMATCH[2]}"
else
shellpen --shellpen-private writeDSL writeln "local $1"
fi
elif [ $# -eq 2 ]
then
shellpen --shellpen-private writeDSL writeln "local $1=$2"
elif [ $# -eq 3 ] && [ "$2" = '=' ]
then
shellpen --shellpen-private writeDSL writeln "local $1=$3"
fi
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"--eval-last-pushed")
__shellpen__command+=("--eval-last-pushed")
## $ EXTENSIONS --eval-last-pushed
## > Evaluate the last item pushed onto the current stack
if [ -z "$BASH_PRE_43" ]
then
shellpen --shellpen-private writeSingleCommand ${SHELLPEN_SOURCE_CONTEXT[$SHELLPEN_CONTEXT_RIGHT_INDEX]}
else
eval "shellpen --shellpen-private writeShellCommand \${__SHELLPEN_CONTEXT_$SHELLPEN_SOURCE_ID[\$SHELLPEN_CONTEXT_RIGHT_INDEX]}"
fi
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"unset")
__shellpen__command+=("unset")
## $ DSL unset
## > `unset` a variable
shellpen --shellpen-private writeDSL writeln "unset $*"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"echo")
__shellpen__command+=("echo")
## $ DSL echo
## > `echo` the provided arguments (_wrapped in `"..."`_)
shellpen --shellpen-private writeDSL write "echo"
[ $# -gt 0 ] && shellpen --shellpen-private writeDSL append " "
while [ $# -gt 0 ]
do
if [ $# -eq 1 ]
then
shellpen --shellpen-private writeDSL append "\"$1\""
else
shellpen --shellpen-private writeDSL append "\"$1\" "
fi
shift
done
shellpen --shellpen-private writeDSL appendln
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"dot")
__shellpen__command+=("dot")
## $ DSL .
## > Source a shell source file via `.`
shellpen --shellpen-private writeDSL writeln ". $*"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"--push")
__shellpen__command+=("--push")
## $ EXTENSIONS --push
## > Push an item onto the current stack
if [ -z "$BASH_PRE_43" ]
then
SHELLPEN_SOURCE_CONTEXT+=("$*")
SHELLPEN_SOURCE_CONTEXT_EMPTY+=("true")
else
eval "__SHELLPEN_CONTEXT_$SHELLPEN_SOURCE_ID+=(\"\$*\")"
eval "__SHELLPEN_CONTEXT_EMPTY_$SHELLPEN_SOURCE_ID+=(\"true\")"
fi
(( SHELLPEN_CONTEXT_DEPTH++ ))
(( SHELLPEN_CONTEXT_RIGHT_INDEX++ ))
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"append")
__shellpen__command+=("append")
## $ DSL append
## > Append a string of text to source output _without indentation_
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]+="$*"
shellpen --shellpen-private writeDSL --mark-last-not-empty
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"while")
__shellpen__command+=("while")
## $ DSL while
## > Begin a `while` loop
shellpen --shellpen-private writeDSL writeln "while $*"
shellpen --shellpen-private writeDSL writeln "do"
shellpen --shellpen-private writeDSL --push "done"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"declare")
__shellpen__command+=("declare")
## $ DSL declare
## > Declare a variable (shortcuts available: `int`, `array`, and `map`)
shellpen --shellpen-private writeDSL writeln "declare $*"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"toStderr")
__shellpen__command+=("toStderr")
## $ DSL toStderr
## > Append `>&2` to the following command
# Because '%s' and similar formatters are so common, look for a '%' formatter (but only one, and not after the --)
local command="$1"
shift
shellpen --shellpen-private writeDSL $command "$@"
# Chomp the newline and replace it with ' >&2newline'
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]="${__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]/%$NEWLINE/ >&2$NEWLINE}"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"else")
__shellpen__command+=("else")
## $ DSL else
## > Add an `else` to an `if` conditional block
shellpen --shellpen-private writeDSL --write-null-if-last-empty
shellpen --shellpen-private writeDSL --pop
shellpen --shellpen-private writeDSL writeln "else"
shellpen --shellpen-private writeDSL --push "fi"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"comment")
__shellpen__command+=("comment")
## $ DSL comment
## > Append a `#` command line
# Do not use writeln because comments should not mark blocks as not empty
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]+="$(shellpen --shellpen-private writeDSL getIndent)# $*${NEWLINE}"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"appendln")
__shellpen__command+=("appendln")
## $ DSL appendln
## > Append a line of text to source output _without indentation_
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]+="$*${NEWLINE}"
shellpen --shellpen-private writeDSL --mark-last-not-empty
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"case")
__shellpen__command+=("case")
## $ DSL case
## > Begin a `case` / `esac` statement
shellpen --shellpen-private writeDSL writeln "case \"$1\" in"
shellpen --shellpen-private writeDSL --push "esac"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"esac")
__shellpen__command+=("esac")
## $ DSL esac
## > End a `case` / `esac` statement
shellpen --shellpen-private writeDSL --pop
shellpen --shellpen-private writeDSL writeln "esac"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"printf")
__shellpen__command+=("printf")
## $ DSL printf
## > `printf` the provided arguments (_with `'%s'` formatter support_)
# Because '%s' and similar formatters are so common, look for a '%' formatter (but only one, and not after the --)
shellpen --shellpen-private writeDSL write "printf"
local encounteredDashDash=false
local encounteredFormatter=false
local argument=''
for argument in "$@"
do
[ "$argument" = -- ] && encounteredDashDash=true
if [ "$encounteredDashDash" = false ] && [ "$encounteredFormatter" = false ] && [[ "$argument" = *"%"* ]] && [[ ! "$argument" = "'"* ]]
then
encounteredFormatter=true
shellpen --shellpen-private writeDSL write " '$argument'"
elif [[ "$argument" =~ ^\' ]] || [[ "$argument" =~ ^\" ]] || [[ "$argument" =~ ^- ]] # If it starts with a quote of some kind, don't double quote it, also if it starts with a dash, like -v
then
shellpen --shellpen-private writeDSL write " $argument"
else
shellpen --shellpen-private writeDSL write " \"$argument\""
fi
done
shellpen --shellpen-private writeDSL writeln
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"return")
__shellpen__command+=("return")
## $ DSL return
## > Append a `return [code]` statement
shellpen --shellpen-private writeDSL writeln "return $1"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"option")
__shellpen__command+=("option")
## $ DSL option
## > Add an option to a `case` / `esac` statement
shellpen --shellpen-private writeDSL writeln "$1)"
shellpen --shellpen-private writeDSL --push "::"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"::")
__shellpen__command+=("::")
## $ DSL ::
## > Write a `;;` for use in `case`/`esac` `option`s
shellpen --shellpen-private writeDSL --write-null-if-last-empty
shellpen --shellpen-private writeDSL writeln ";;"
shellpen --shellpen-private writeDSL --pop
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"[[")
__shellpen__command+=("[[")
## $ DSL [[
## > Starts a line with a `[[` statement, e.g. `[[ '"$1"' =~ ^-- ]] AND ...`
shellpen --shellpen-private writeDSL writeln "[[ $*"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"done")
__shellpen__command+=("done")
## $ DSL done
## > End a `for` or `while` loop
shellpen --shellpen-private writeDSL --write-null-if-last-empty
shellpen --shellpen-private writeDSL --pop
shellpen --shellpen-private writeDSL writeln "done"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"for")
__shellpen__command+=("for")
## $ DSL for
## > Begin a `for` loop
# Write the function
shellpen --shellpen-private writeDSL writeln "for $*"
shellpen --shellpen-private writeDSL writeln "do"
# Push the DSL command to run to CLOSE this block
shellpen --shellpen-private writeDSL --push "done"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"fi")
__shellpen__command+=("fi")
## $ DSL fi
## > End an `if` conditional block
shellpen --shellpen-private writeDSL --write-null-if-last-empty
shellpen --shellpen-private writeDSL --pop
shellpen --shellpen-private writeDSL writeln "fi"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"map")
__shellpen__command+=("map")
## $ DSL map
## > Define an associative array variable
local typeArgument='-A '
local globalArgument=''
[ "$1" = "-g" ] && { globalArgument='-g '; shift; }
if [ $# -eq 1 ]
then
if [[ "$1" =~ ^([^=]+)=([^=]+)$ ]]
then
shellpen --shellpen-private writeDSL writeln "declare ${globalArgument}${typeArgument}${BASH_REMATCH[1]}=${BASH_REMATCH[2]}"
else
shellpen --shellpen-private writeDSL writeln "declare ${globalArgument}${typeArgument}$1"
fi
else
shellpen --shellpen-private writeDSL append "declare ${globalArgument}${typeArgument}$1"
shift
if [ $# -gt 0 ]
then
shellpen --shellpen-private writeDSL append '=('
while [ $# -gt 0 ]
do
if [[ "$1" =~ ^\[([^\]]+)\]=(.*)$ ]]
then
if [ $# -eq 1 ]
then
shellpen --shellpen-private writeDSL append "[${BASH_REMATCH[1]}]=\"${BASH_REMATCH[2]}\""
else
shellpen --shellpen-private writeDSL append "[${BASH_REMATCH[1]}]=\"${BASH_REMATCH[2]}\" "
fi
else
echo "shellpen --shellpen-private writeDSL map: invalid map argument '$1', expected [key]=value" >&2
return 2
fi
shift
done
shellpen --shellpen-private writeDSL append ')'
fi
shellpen --shellpen-private writeDSL writeln
fi
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"$$")
__shellpen__command+=("$$")
## $ DSL $$
## > Run any arbitrary command double quoting all provided arguments
local command="$1"
shift
shellpen --shellpen-private writeDSL write "$command"
local arg=''
for arg in "$@"
do
shellpen --shellpen-private writeDSL append " \"$arg\""
done
shellpen --shellpen-private writeDSL appendln
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"getIndent")
__shellpen__command+=("getIndent")
## $ DSL getIndent
## > Get the text string to use to indent appended text
local INDENT=''
if [ -z "$BASH_PRE_43" ]
then
declare -i SHELLPEN_CONTEXT_DEPTH="${#SHELLPEN_SOURCE_CONTEXT[@]}"
else
eval "declare -i SHELLPEN_CONTEXT_DEPTH=\"\${#__SHELLPEN_CONTEXT_$SHELLPEN_SOURCE_ID[@]}\""
fi
declare -i i=0
while [ $i -lt $SHELLPEN_CONTEXT_DEPTH ]
do
INDENT+="$SHELLPEN_INDENT"
(( i++ ))
done
printf '%s' "$INDENT"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"writeln")
__shellpen__command+=("writeln")
## $ DSL writeln
## > Append a line of text to source output including indentation
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]+="$(shellpen --shellpen-private writeDSL getIndent)$*${NEWLINE}"
shellpen --shellpen-private writeDSL --mark-last-not-empty
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"array")
__shellpen__command+=("array")
## $ DSL array
## > Define an array variable
local typeArgument='-a '
local globalArgument=''
[ "$1" = "-g" ] && { globalArgument='-g '; shift; }
[ "$1" = "-A" ] && { typeArgument='-A '; shift; }
[ "$1" = "-g" ] && { globalArgument='-g '; shift; }
if [ $# -eq 1 ]
then
if [[ "$1" =~ ^([^=]+)=([^=]+)$ ]]
then
shellpen --shellpen-private writeDSL writeln "declare ${globalArgument}${typeArgument}${BASH_REMATCH[1]}=${BASH_REMATCH[2]}"
else
shellpen --shellpen-private writeDSL writeln "declare ${globalArgument}${typeArgument}$1"
fi
else
shellpen --shellpen-private writeDSL write "declare ${globalArgument}${typeArgument}$1"
shift
if [ $# -gt 0 ]
then
shellpen --shellpen-private writeDSL append '=('
while [ $# -gt 0 ]
do
if [ $# -eq 1 ]
then
shellpen --shellpen-private writeDSL append "\"$1\""
else
shellpen --shellpen-private writeDSL append "\"$1\" "
fi
shift
done
shellpen --shellpen-private writeDSL append ')'
fi
shellpen --shellpen-private writeDSL writeln
fi
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"write")
__shellpen__command+=("write")
## $ DSL write
## > Append a string of text to source output including indentation
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]+="$(shellpen --shellpen-private writeDSL getIndent)$*"
shellpen --shellpen-private writeDSL --mark-last-not-empty
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"--get-stack")
__shellpen__command+=("--get-stack")
## $ EXTENSIONS --get-stack
## > Populate a provided array with the full current stack
[ $# -eq 0 ] && { echo "shellpen --shellpen-private writeDSL --get-stack [Extension Error]: requires name of an array variable to populate with the stack items" >&2; return 1; }
if [ -z "$BASH_PRE_43" ]
then
local array
typeset -n array="$1"
local stackItem=''
for stackItem in "${SHELLPEN_SOURCE_CONTEXT[@]}"
do
array+=("$stackItem")
done
else
eval "
local stackItem=''
for stackItem in \"\${__SHELLPEN_CONTEXT_$SHELLPEN_SOURCE_ID[@]}\"
do
$1+=(\"\$stackItem\")
done
"
fi
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"cleanSlate")
__shellpen__command+=("cleanSlate")
## $ DSL cleanSlate
## > Clean the slate of the current pen (_resets source code_)
__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]=""
unset "__SHELLPEN_CONTEXT_$SHELLPEN_SOURCE_ID"
unset "__SHELLPEN_CONTEXT_EMPTY_$SHELLPEN_SOURCE_ID"
# Recreate supporting arrays for tracking the nested context
if [ -z "$BASH_PRE_43" ]
then
declare -g -a "__SHELLPEN_CONTEXT_$sourceId=()"
declare -g -a "__SHELLPEN_CONTEXT_EMPTY_$sourceId=()"
else
eval "__SHELLPEN_CONTEXT_$sourceId=()"
eval "__SHELLPEN_CONTEXT_EMPTY_$sourceId=()"
fi
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"then")
__shellpen__command+=("then")
## $ DSL then
## > Syntax sugar (_does not modify source code_)
# No-op
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"if")
__shellpen__command+=("if")
## $ DSL if
## > Begin an `if` conditional block
# Write the function
shellpen --shellpen-private writeDSL writeln "if $*"
shellpen --shellpen-private writeDSL writeln "then"
# Push the DSL command to run to CLOSE this block
shellpen --shellpen-private writeDSL --push "fi"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"putAway")
__shellpen__command+=("putAway")
## $ DSL putAway
## > Delete the current pen (_also deletes source code_)
unset "__SHELLPEN_PENS[$SHELLPEN_PEN_INDEX]"
unset "__SHELLPEN_SOURCES[$SHELLPEN_PEN_INDEX]"
unset "__SHELLPEN_SOURCES_TEXTS[$SHELLPEN_PEN_INDEX]"
unset "__SHELLPEN_CONTEXT_$SHELLPEN_SOURCE_ID"
unset "__SHELLPEN_CONTEXT_EMPTY_$SHELLPEN_SOURCE_ID"
unset __shellpen__command[$(( ${#__shellpen__command[@]} - 1 ))]
__shellpen__command=("__shellpen__command[@]")
;;
"fromCommand")
__shellpen__command+=("fromCommand")
## $ DSL fromCommand
## > Append `< <([command])` to the following command
local commandString="$1"
shift
local command="$1"
shift
shellpen --shellpen-private writeDSL $command "$@"