- Created submodule lib/composure (links to github.com/erichs/composure)

- Removed "normal" file lib/composure.bash
- Symlinked lib/composure/composure.sh to lib/composure.bash
	- This allows ease of updating composure directly from git.
pull/872/head
Brian Recchia 2016-12-15 17:50:16 -05:00
parent 1fa0f82f61
commit 614b71ecf8
3 changed files with 450 additions and 265 deletions

3
.gitmodules vendored 100644
View File

@ -0,0 +1,3 @@
[submodule "lib/composure"]
path = lib/composure
url = git@github.com:erichs/composure.git

1
lib/composure 160000

@ -0,0 +1 @@
Subproject commit f784e3a59c6f5d57fb6a8a93adb2c88b0799c77b

711
lib/composure.bash 100644 → 100755
View File

@ -1,365 +1,546 @@
#!/bin/bash
# composure - by erichs
# light-hearted functions for intuitive shell programming
# install: source this script in your ~/.profile or ~/.${SHELL}rc script
# version: 1.3.1
# latest source available at http://git.io/composure
# install: source this script in your ~/.profile or ~/.${SHELL}rc script
# known to work on bash, zsh, and ksh93
# 'plumbing' functions
composure_keywords ()
{
echo "about author example group param version"
_bootstrap_composure() {
_generate_metadata_functions
_load_composed_functions
_determine_printf_cmd
}
letterpress ()
_get_composure_dir ()
{
typeset rightcol="$1" leftcol="${2:- }"
if [ -n "$XDG_DATA_HOME" ]; then
echo "$XDG_DATA_HOME/composure"
else
echo "$HOME/.local/composure"
fi
}
if [ -z "$rightcol" ]; then
_get_author_name ()
{
typeset name localname
localname="$(git --git-dir "$(_get_composure_dir)/.git" config --get user.name)"
for name in "$GIT_AUTHOR_NAME" "$localname"; do
if [ -n "$name" ]; then
echo "$name"
break
fi
done
}
_composure_keywords ()
{
echo "about author example group param version"
}
_letterpress ()
{
typeset rightcol="$1" leftcol="${2:- }" leftwidth="${3:-20}"
if [ -z "$rightcol" ]; then
return
fi
$_printf_cmd "%-*s%s\n" "$leftwidth" "$leftcol" "$rightcol"
}
_determine_printf_cmd() {
if [ -z "$_printf_cmd" ]; then
_printf_cmd=printf
# prefer GNU gprintf if available
[ -x "$(which gprintf 2>/dev/null)" ] && _printf_cmd=gprintf
export _printf_cmd
fi
}
_longest_function_name_length ()
{
echo "$1" | awk 'BEGIN{ maxlength=0 }
{
for(i=1;i<=NF;i++)
if (length($i)>maxlength)
{
maxlength=length($i)
}
}
END{ print maxlength}'
}
_temp_filename_for ()
{
typeset file=$(mktemp "/tmp/$1.XXXX")
command rm "$file" 2>/dev/null # ensure file is unlinked prior to use
echo "$file"
}
_prompt ()
{
typeset prompt="$1"
typeset result
case "$(_shell)" in
bash)
read -r -e -p "$prompt" result;;
*)
echo -n "$prompt" >&2; read -r result;;
esac
echo "$result"
}
_add_composure_file ()
{
typeset func="$1"
typeset file="$2"
typeset operation="$3"
typeset comment="${4:-}"
typeset composure_dir=$(_get_composure_dir)
(
if ! cd "$composure_dir"; then
printf "%s\n" "Oops! Can't find $composure_dir!"
return
fi
if git rev-parse 2>/dev/null; then
if [ ! -f "$file" ]; then
printf "%s\n" "Oops! Couldn't find $file to version it for you..."
return
fi
cp "$file" "$composure_dir/$func.inc"
git add --all .
if [ -z "$comment" ]; then
comment="$(_prompt 'Git Comment: ')"
fi
git commit -m "$operation $func: $comment"
fi
printf "%-20s%s\n" "$leftcol" "$rightcol"
)
}
transcribe ()
_transcribe ()
{
typeset func=$1
typeset file=$2
typeset operation="$3"
typeset func="$1"
typeset file="$2"
typeset operation="$3"
typeset comment="${4:-}"
typeset composure_dir=$(_get_composure_dir)
if git --version >/dev/null 2>&1; then
if [ -d ~/.composure ]; then
(
cd ~/.composure
if git rev-parse 2>/dev/null; then
if [ ! -f $file ]; then
printf "%s\n" "Oops! Couldn't find $file to version it for you..."
return
fi
cp $file ~/.composure/$func.inc
git add --all .
git commit -m "$operation $func"
fi
)
else
if [ "$USE_COMPOSURE_REPO" = "0" ]; then
return # if you say so...
fi
printf "%s\n" "I see you don't have a ~/.composure repo..."
typeset input
typeset valid=0
while [ $valid != 1 ]; do
printf "\n%s" 'would you like to create one? y/n: '
read input
case $input in
y|yes|Y|Yes|YES)
(
echo 'creating git repository for your functions...'
mkdir ~/.composure
cd ~/.composure
git init
echo "composure stores your function definitions here" > README.txt
git add README.txt
git commit -m 'initial commit'
)
# if at first you don't succeed...
transcribe "$func" "$file" "$operation"
valid=1
;;
n|no|N|No|NO)
printf "%s\n" "ok. add 'export USE_COMPOSURE_REPO=0' to your startup script to disable this message."
valid=1
;;
*)
printf "%s\n" "sorry, didn't get that..."
;;
esac
done
fi
fi
}
typeset_functions ()
{
# unfortunately, there does not seem to be a easy, portable way to list just the
# names of the defined shell functions...
# first, determine our shell:
typeset shell
if [ -n "$SHELL" ]; then
shell=$(basename $SHELL) # we assume this is set correctly!
if git --version >/dev/null 2>&1; then
if [ -d "$composure_dir" ]; then
_add_composure_file "$func" "$file" "$operation" "$comment"
else
# we'll have to try harder
# here's a hack I modified from a StackOverflow post:
# we loop over the ps listing for the current process ($$), and print the last column (CMD)
# stripping any leading hyphens bash sometimes throws in there
typeset x ans
typeset this=$(for x in $(ps -p $$); do ans=$x; done; printf "%s\n" $ans | sed 's/^-*//')
typeset shell=$(basename $this) # e.g. /bin/bash => bash
fi
case "$shell" in
bash)
typeset -F | awk '{print $3}'
if [ "$USE_COMPOSURE_REPO" = "0" ]; then
return # if you say so...
fi
printf "%s\n" "I see you don't have a $composure_dir repo..."
typeset input=''
typeset valid=0
while [ $valid != 1 ]; do
printf "\n%s" 'would you like to create one? y/n: '
read -r input
case $input in
y|yes|Y|Yes|YES)
(
echo 'creating git repository for your functions...'
mkdir -p "$composure_dir" || return 1
cd "$composure_dir" || return 1
git init
echo "composure stores your function definitions here" > README.txt
git add README.txt
git commit -m 'initial commit'
)
# if at first you don't succeed...
_transcribe "$func" "$file" "$operation" "$comment"
valid=1
;;
*)
# trim everything following '()' in ksh
typeset +f | sed 's/().*$//'
;;
esac
n|no|N|No|NO)
printf "%s\n" "ok. add 'export USE_COMPOSURE_REPO=0' to your startup script to disable this message."
valid=1
;;
*)
printf "%s\n" "sorry, didn't get that..."
;;
esac
done
fi
fi
}
_typeset_functions ()
{
# unfortunately, there does not seem to be a easy, portable way to list just the
# names of the defined shell functions...
# bootstrap metadata keywords for porcelain functions
for f in $(composure_keywords)
do
case "$(_shell)" in
sh|bash)
typeset -F | awk '{print $3}'
;;
*)
# trim everything following '()' in ksh/zsh
typeset +f | sed 's/().*$//'
;;
esac
}
_typeset_functions_about ()
{
typeset f
for f in $(_typeset_functions); do
typeset -f -- "$f" | grep -qE "^about[[:space:]]|[[:space:]]about[[:space:]]" && echo -- "$f"
done
}
_shell () {
# here's a hack I modified from a StackOverflow post:
# get the ps listing for the current process ($$), and print the last column (CMD)
# stripping any leading hyphens shells sometimes throw in there
typeset this=$(ps -p $$ | tail -1 | awk '{print $NF}' | sed 's/^-*//')
echo "${this##*/}" # e.g. /bin/bash => bash
}
_generate_metadata_functions() {
typeset f
for f in $(_composure_keywords)
do
eval "$f() { :; }"
done
unset f
done
}
_list_composure_files () {
typeset composure_dir="$(_get_composure_dir)"
[ -d "$composure_dir" ] && find "$composure_dir" -maxdepth 1 -name '*.inc'
}
_load_composed_functions () {
# load previously composed functions into shell
# you may disable this by adding the following line to your shell startup:
# export LOAD_COMPOSED_FUNCTIONS=0
if [ "$LOAD_COMPOSED_FUNCTIONS" = "0" ]; then
return # if you say so...
fi
typeset inc
for inc in $(_list_composure_files); do
# shellcheck source=/dev/null
. "$inc"
done
}
_strip_trailing_whitespace () {
sed -e 's/ \+$//'
}
_strip_semicolons () {
sed -e 's/;$//'
}
# 'porcelain' functions
cite ()
{
about creates one or more meta keywords for use in your functions
param one or more keywords
example '$ cite url username'
example '$ url http://somewhere.com'
example '$ username alice'
group composure
about 'creates one or more meta keywords for use in your functions'
param 'one or more keywords'
example '$ cite url username'
example '$ url http://somewhere.com'
example '$ username alice'
group 'composure'
# this is the storage half of the 'metadata' system:
# we create dynamic metadata keywords with function wrappers around
# the NOP command, ':'
# this is the storage half of the 'metadata' system:
# we create dynamic metadata keywords with function wrappers around
# the NOP command, ':'
# anything following a keyword will get parsed as a positional
# parameter, but stay resident in the ENV. As opposed to shell
# comments, '#', which do not get parsed and are not available
# at runtime.
# anything following a keyword will get parsed as a positional
# parameter, but stay resident in the ENV. As opposed to shell
# comments, '#', which do not get parsed and are not available
# at runtime.
# a BIG caveat--your metadata must be roughly parsable: do not use
# contractions, and consider single or double quoting if it contains
# non-alphanumeric characters
# a BIG caveat--your metadata must be roughly parsable: do not use
# contractions, and consider single or double quoting if it contains
# non-alphanumeric characters
if [ -z "$1" ]; then
printf '%s\n' 'missing parameter(s)'
reference cite
return
fi
if [ -z "$1" ]; then
printf '%s\n' 'missing parameter(s)'
reference cite
return
fi
typeset keyword
for keyword in $*; do
eval "$keyword() { :; }"
done
typeset keyword
for keyword in "$@"; do
eval "$keyword() { :; }"
done
}
draft ()
{
about wraps command from history into a new function, default is last command
param 1: name to give function
param 2: optional history line number
example '$ ls'
example '$ draft list'
example '$ draft newfunc 1120 # wraps command at history line 1120 in newfunc()'
group composure
about 'wraps command from history into a new function, default is last command'
param '1: name to give function'
param '2: optional history line number'
example '$ ls'
example '$ draft list'
example '$ draft newfunc 1120 # wraps command at history line 1120 in newfunc()'
group 'composure'
typeset func=$1
typeset num=$2
typeset cmd
typeset func=$1
typeset num=$2
if [ -z "$func" ]; then
printf '%s\n' 'missing parameter(s)'
reference draft
return
fi
if [ -z "$func" ]; then
printf '%s\n' 'missing parameter(s)'
reference draft
return
fi
# aliases bind tighter than function names, disallow them
if [ -n "$(LANG=C type -t $func 2>/dev/null | grep 'alias')" ]; then
printf '%s\n' "sorry, $(type -a $func). please choose another name."
return
fi
# aliases bind tighter than function names, disallow them
if type -a "$func" 2>/dev/null | grep -q 'is.*alias'; then
printf '%s\n' "sorry, $(type -a "$func"). please choose another name."
return
fi
if [ -z "$num" ]; then
# parse last command from fc output
# some versions of 'fix command, fc' need corrective lenses...
typeset myopic=$(fc -ln -1 | grep draft)
typeset lines=1
if [ -n "$myopic" ]; then
lines=2
fi
cmd=$(fc -ln -$lines | head -1 | sed 's/^[[:blank:]]*//')
else
# parse command from history line number
cmd=$(eval "history | grep '^[[:blank:]]*$num' | head -1" | sed 's/^[[:blank:][:digit:]]*//')
fi
eval "$func() { $cmd; }"
typeset file=$(mktemp /tmp/draft.XXXX)
typeset -f $func > $file
transcribe $func $file draft
rm $file 2>/dev/null
typeset cmd
if [ -z "$num" ]; then
# some versions of 'fix command, fc' need corrective lenses...
typeset lines=$(fc -ln -1 | grep -q draft && echo 2 || echo 1)
# parse last command from fc output
# shellcheck disable=SC2086
cmd=$(fc -ln -$lines | head -1 | sed 's/^[[:blank:]]*//')
else
# parse command from history line number
cmd=$(eval "history | grep '^[[:blank:]]*$num' | head -1" | sed 's/^[[:blank:][:digit:]]*//')
fi
eval "function $func {
author '$(_get_author_name)'
about ''
param ''
example ''
group ''
$cmd;
}"
typeset file=$(_temp_filename_for draft)
typeset -f "$func" | _strip_trailing_whitespace | _strip_semicolons > "$file"
_transcribe "$func" "$file" Draft "Initial draft"
command rm "$file" 2>/dev/null
revise "$func"
}
glossary ()
{
about displays help summary for all functions, or summary for a group of functions
param 1: optional, group name
example '$ glossary'
example '$ glossary misc'
group composure
about 'displays help summary for all functions, or summary for a group of functions'
param '1: optional, group name'
example '$ glossary'
example '$ glossary misc'
group 'composure'
typeset targetgroup=${1:-}
typeset targetgroup=${1:-}
typeset functionlist="$(_typeset_functions_about)"
typeset maxwidth=$(_longest_function_name_length "$functionlist" | awk '{print $1 + 5}')
for func in $(typeset_functions); do
if [ -n "$targetgroup" ]; then
typeset group="$(typeset -f $func | metafor group)"
if [ "$group" != "$targetgroup" ]; then
continue # skip non-matching groups, if specified
fi
fi
typeset about="$(typeset -f $func | metafor about)"
letterpress "$about" $func
for func in $(echo $functionlist); do
if [ "X${targetgroup}X" != "XX" ]; then
typeset group="$(typeset -f -- $func | metafor group)"
if [ "$group" != "$targetgroup" ]; then
continue # skip non-matching groups, if specified
fi
fi
typeset about="$(typeset -f -- $func | metafor about)"
typeset aboutline=
echo "$about" | fmt | while read -r aboutline; do
_letterpress "$aboutline" "$func" "$maxwidth"
func=" " # only display function name once
done
done
}
metafor ()
{
about prints function metadata associated with keyword
param 1: meta keyword
example '$ typeset -f glossary | metafor example'
group composure
about 'prints function metadata associated with keyword'
param '1: meta keyword'
example '$ typeset -f glossary | metafor example'
group 'composure'
typeset keyword=$1
typeset keyword=$1
if [ -z "$keyword" ]; then
printf '%s\n' 'missing parameter(s)'
reference metafor
return
fi
if [ -z "$keyword" ]; then
printf '%s\n' 'missing parameter(s)'
reference metafor
return
fi
# this sed-fu is the retrieval half of the 'metadata' system:
# 'grep' for the metadata keyword, and then parse/filter the matching line
# this sed-fu is the retrieval half of the 'metadata' system:
# 'grep' for the metadata keyword, and then parse/filter the matching line
# grep keyword # strip trailing '|"|; # ignore thru keyword and leading '|"
sed -n "/$keyword / s/['\";]*$//;s/^[ ]*$keyword ['\"]*\([^([].*\)*$/\1/p"
# grep keyword # strip trailing '|"|; # ignore thru keyword and leading '|"
sed -n "/$keyword / s/['\";]*\$//;s/^[ ]*$keyword ['\"]*\([^([].*\)*\$/\1/p"
}
reference ()
{
about displays apidoc help for a specific function
param 1: function name
example '$ reference revise'
group composure
about 'displays apidoc help for a specific function'
param '1: function name'
example '$ reference revise'
group 'composure'
typeset func=$1
if [ -z "$func" ]; then
printf '%s\n' 'missing parameter(s)'
reference reference
return
fi
typeset func=$1
if [ -z "$func" ]; then
printf '%s\n' 'missing parameter(s)'
reference reference
return
fi
typeset line
typeset line
typeset about="$(typeset -f $func | metafor about)"
letterpress "$about" $func
typeset about="$(typeset -f "$func" | metafor about)"
_letterpress "$about" "$func"
typeset author="$(typeset -f $func | metafor author)"
if [ -n "$author" ]; then
letterpress "$author" 'author:'
fi
typeset author="$(typeset -f $func | metafor author)"
if [ -n "$author" ]; then
_letterpress "$author" 'author:'
fi
typeset version="$(typeset -f $func | metafor version)"
if [ -n "$version" ]; then
letterpress "$version" 'version:'
fi
typeset version="$(typeset -f $func | metafor version)"
if [ -n "$version" ]; then
_letterpress "$version" 'version:'
fi
if [ -n "$(typeset -f $func | metafor param)" ]; then
printf "parameters:\n"
typeset -f $func | metafor param | while read line
do
letterpress "$line"
done
fi
if [ -n "$(typeset -f $func | metafor param)" ]; then
printf "parameters:\n"
typeset -f $func | metafor param | while read -r line
do
_letterpress "$line"
done
fi
if [ -n "$(typeset -f $func | metafor example)" ]; then
printf "examples:\n"
typeset -f $func | metafor example | while read line
do
letterpress "$line"
done
fi
if [ -n "$(typeset -f $func | metafor example)" ]; then
printf "examples:\n"
typeset -f $func | metafor example | while read -r line
do
_letterpress "$line"
done
fi
}
revise ()
{
about loads function into editor for revision
param 1: name of function
example '$ revise myfunction'
group composure
about 'loads function into editor for revision'
param '<optional> -e: revise version stored in ENV'
param '1: name of function'
example '$ revise myfunction'
example '$ revise -e myfunction'
example 'save a zero-length file to abort revision'
group 'composure'
typeset func=$1
typeset temp=$(mktemp /tmp/revise.XXXX)
typeset source='git'
if [ "$1" = '-e' ]; then
source='env'
shift
fi
if [ -z "$func" ]; then
printf '%s\n' 'missing parameter(s)'
reference revise
return
fi
typeset func=$1
if [ -z "$func" ]; then
printf '%s\n' 'missing parameter(s)'
reference revise
return
fi
# populate tempfile...
if [ -f ~/.composure/$func.inc ]; then
# ...with contents of latest git revision...
cat ~/.composure/$func.inc >> $temp
else
# ...or from ENV if not previously versioned
typeset -f $func >> $temp
fi
typeset composure_dir=$(_get_composure_dir)
typeset temp=$(_temp_filename_for revise)
# populate tempfile...
if [ "$source" = 'env' ] || [ ! -f "$composure_dir/$func.inc" ]; then
# ...with ENV if specified or not previously versioned
typeset -f $func > $temp
else
# ...or with contents of latest git revision
cat "$composure_dir/$func.inc" > "$temp"
fi
if [ -z "$EDITOR" ]
then
typeset EDITOR=vi
fi
if [ -z "$EDITOR" ]
then
typeset EDITOR=vi
fi
$EDITOR $temp
. $temp # source edited file
$EDITOR "$temp"
if [ -s "$temp" ]; then
typeset edit='N'
transcribe $func $temp revise
rm $temp
# source edited file
# shellcheck source=/dev/null
. "$temp" || edit='Y'
while [ $edit = 'Y' ]; do
echo -n "Re-edit? Y/N: "
read -r edit
case $edit in
y|yes|Y|Yes|YES)
edit='Y'
$EDITOR "$temp"
# shellcheck source=/dev/null
. "$temp" && edit='N';;
*)
edit='N';;
esac
done
_transcribe "$func" "$temp" Revise
else
# zero-length files abort revision
printf '%s\n' 'zero-length file, revision aborted!'
fi
command rm "$temp"
}
write ()
{
about writes one or more composed function definitions to stdout
param one or more function names
example '$ write finddown foo'
example '$ write finddown'
group composure
about 'writes one or more composed function definitions to stdout'
param 'one or more function names'
example '$ write finddown foo'
example '$ write finddown'
group 'composure'
if [ -z "$1" ]; then
printf '%s\n' 'missing parameter(s)'
reference write
return
fi
if [ -z "$1" ]; then
printf '%s\n' 'missing parameter(s)'
reference write
return
fi
echo "#!/usr/bin/env ${SHELL##*/}"
# bootstrap metadata
cat <<END
for f in $(composure_keywords)
for f in $(_composure_keywords)
do
eval "\$f() { :; }"
eval "\$f() { :; }"
done
unset f
END
# include cite() to enable custom keywords
typeset -f cite $*
# write out function definitons
# shellcheck disable=SC2034
typeset -f cite "$@"
cat <<END
main() {
echo "edit me to do something useful!"
exit 0
}
main \$*
END
}
_bootstrap_composure
: <<EOF
License: The MIT License
Copyright © 2012 Erich Smith
Copyright © 2012, 2013 Erich Smith
Permission is hereby granted, free of charge, to any person obtaining a copy of this
software and associated documentation files (the "Software"), to deal in the Software