hledger/shell-completion/hledger-completion.bash.m4
Vladimir Zhelezov 750450915d Break overly long lines for better readability
Hopefully differences are aligned and easily discernible this way
2021-02-28 08:33:18 +01:00

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# shellcheck disable=2034
# Completion script for hledger.
# Created using a Makefile and real hledger.
# This script is sourced by an interactive shell, so do NOT do things like
# 'set -o pipefail' or mangle the global environment in any other way!
# That said, we *do* remove colon (:) from COMP_WORDBREAKS which impacts
# the rest of the session and completion for other programs.
_hledger_completion_function() {
local cur prev words cword
_init_completion -n : || return 0
# Current treatment for special characters:
# - exclude colon (:) from COMP_WORDBREAKS
# - option processing assumes that `=` is in COMP_WORDBREAKS
# - use compopt -o filenames to escape the rest
COMP_WORDBREAKS=${COMP_WORDBREAKS//:}
case $COMP_WORDBREAKS in
*=*) : ;;
*) COMP_WORDBREAKS=$COMP_WORDBREAKS= ;;
esac
compopt -o filenames
local subcommand
local i
for ((i=1; i<${#words[@]}; i++)); do
subcommand=${words[i]}
if ! grep -Fxqe "$subcommand" <<< "$_hledger_complist_commands"; then
subcommand=
continue
fi
# There could be other commands begining with $subcommand, e.g.:
# $subcommand == reg --> register, register-match,
# $subcommand == bal --> balance, balancesheet, balancesheetequity, etc.
# Do not ignore them!
if ((i == cword)); then
compopt +o filenames
_hledger_compreply "$(
_hledger_compgen "$_hledger_complist_commands"
)"
return 0
fi
break
done
# Option argument completion
_hledger_compreply_optarg && return
if [[ -z $subcommand ]]; then
compopt +o filenames
if [[ $cur == -* ]]; then
_hledger_compreply "$(
_hledger_compgen "$_hledger_complist_generic_options"
)"
# Suspend space on completion of long options requiring an argument
[[ ${COMPREPLY[0]} == --*= ]] && compopt -o nospace
else
_hledger_compreply "$(
_hledger_compgen "$_hledger_complist_commands"
)"
fi
return 0
fi
if [[ $cur == -* ]]; then
local subcommandOptions
# Replace dashes with underscores and use indirect expansion
subcommandOptions=_hledger_complist_options_${subcommand//-/_}
_hledger_compreply "$(_hledger_compgen "${!subcommandOptions}")"
# Suspend space on completion of long options requiring an argument
[[ ${COMPREPLY[0]} == --*= ]] && compopt -o nospace
compopt +o filenames
return 0
fi
# Query completion
_hledger_compreply_query && return
# Subcommand specific
case $subcommand in
help)
compopt -o nosort +o filenames
_hledger_compreply "$(
compgen -W "$(hledger help | tail -n 1)" -- "$cur"
)"
return 0
;;
# These do not expect or support any query arguments
commodities|check-dupes|files|import|print-unique|test)
return 0
;;
esac
# Offer query filters and accounts for the rest
# Do not sort. Keep options, accounts and query filters grouped separately
compopt -o nosort -o nospace
_hledger_compreply "$(_hledger_compgen "$_hledger_complist_query_filters")"
if [[ -z $cur ]]; then
_hledger_compreply_append "$(
_hledger_compgen "$(_hledger accounts --flat --depth 1)"
)"
else
_hledger_compreply_append "$(
_hledger_compgen "$(_hledger accounts --flat)"
)"
fi
return 0
}
_hledger_extension_completion_function() {
# Pretend that hledger is called with given extension
# as first argument and call main completion function
COMP_WORDS=("hledger" "${1#*-}" "${COMP_WORDS[@]:1}")
COMP_CWORD=$((COMP_CWORD + 1))
_hledger_completion_function "hledger" "${@:1}"
}
# Register completion function for hledger:
complete -F _hledger_completion_function hledger
# Register completion functions for hledger extensions:
complete -F _hledger_extension_completion_function hledger-ui
complete -F _hledger_extension_completion_function hledger-web
# Helpers
# Comment out when done
_hledger_debug() {
((HLEDGER_DEBUG)) || return 0
local var vars=(words)
(($#)) && vars=("$@")
for var in "${vars[@]}"; do
printf '\ndebug: %s\n' "$(declare -p "$var")" >&2
done
}
# Stolen from bash-completion
# This function quotes the argument in a way so that readline dequoting
# results in the original argument. This is necessary for at least
# `compgen' which requires its arguments quoted/escaped:
_hledger_quote_by_ref()
{
printf -v "$2" %q "$1"
# If result becomes quoted like this: $'string', re-evaluate in order to
# drop the additional quoting. See also: http://www.mail-archive.com/
# bash-completion-devel@lists.alioth.debian.org/msg01942.html
[[ ${!2} == \$* ]] && eval "$2=${!2}"
}
# Set the value of COMPREPLY from newline delimited completion candidates
_hledger_compreply() {
local IFS=$'\n'
# shellcheck disable=2206
COMPREPLY=($1)
}
# Append the value of COMPREPLY from newline delimited completion candidates
_hledger_compreply_append() {
local IFS=$'\n'
# shellcheck disable=2206
COMPREPLY+=($1)
}
# Generate input suitable for _hledger_compreply() from newline delimited
# completion candidates. It doesn't seem there is a way to feed a literal
# word list to compgen -- it will eat your quotes, drink your booze and...
# Completion candidates are quoted accordingly first and then we leave it to
# compgen to deal with readline.
#
# Arguments:
# $1: a newline separated list with completion cadidates
# $2: (optional) a prefix string to add to generated completions
# $3: (optional) a word to match instead of $cur, the default.
# If $match is null and $prefix is defined the match is done against $cur
# stripped of $prefix. If both $prefix and $match are null we match against
# $cur and no prefix is added to completions.
_hledger_compgen() {
local complist=$1
local prefix=$2
local match=$3
local quoted=()
local word
local i=0
while IFS= read -r word; do
_hledger_quote_by_ref "$word" word
quoted[i++]=$word
done <<< "$complist"
if (($# < 3)); then
match=${cur:${#prefix}}
fi
local IFS=$'\n'
compgen -P "$prefix" -W "${quoted[*]}" -- "$match"
}
# Try required option argument completion. Set COMPREPLY and return 0 on
# success, 1 if option doesn't require an argument or out of context
_hledger_compreply_optarg() {
local optionIndex=$((cword - 1))
local match=$cur
local wordlist
# Match the empty string on --file=<TAB>, not the equal sign itself
if [[ $cur == = ]]; then
match=""
# Once input is present, cword is incremented so we compensate
elif [[ $prev == = ]]; then
optionIndex=$((cword - 2))
fi
[[ ${words[optionIndex]} == -* ]] || return
case ${words[optionIndex]} in
--alias)
compopt -o nospace
_hledger_compreply "$(
_hledger_compgen "$(_hledger accounts --flat)" "" "$match"
)"
;;
-f|--file|--rules-file|-o|--output-file)
_hledger_compreply "$(compgen -f -- "$match")"
;;
--pivot)
compopt -o nosort
wordlist="code description note payee"
_hledger_compreply "$(compgen -W "$wordlist" -- "$match")"
_hledger_compreply_append "$(
_hledger_compgen "$(_hledger tags)" "" "$match"
)"
;;
--value)
wordlist="cost then end now"
_hledger_compreply "$(compgen -W "$wordlist" -- "$match")"
;;
-X|--exchange)
_hledger_compreply "$(
_hledger_compgen "$(_hledger commodities)" "" "$match"
)"
;;
--color|--colour)
compopt -o nosort
wordlist="auto always yes never no"
_hledger_compreply "$(compgen -W "$wordlist" -- "$match")"
;;
-O|--output-format)
wordlist="txt csv json sql"
_hledger_compreply "$(compgen -W "$wordlist" -- "$match")"
;;
--close-acct|--open-acct)
compopt -o nospace
_hledger_compreply "$(
_hledger_compgen "$(_hledger accounts --flat)" "" "$match"
)"
;;
--debug)
wordlist="{1..9}"
_hledger_compreply "$(compgen -W "$wordlist" -- "$match")"
;;
# Argument required, but no handler (yet)
-b|--begin|-e|--end|-p|--period|--depth|--drop)
_hledger_compreply ""
;;
*)
return 1
;;
esac
return 0
}
# Query filter completion through introspection
_hledger_compreply_query() {
[[ $cur =~ .: ]] || return
local query=${cur%%:*}:
local match=${cur#*:}
grep -Fxqe "$query" <<< "$_hledger_complist_query_filters" || return
local hledgerArgs=()
case $query in
acct:)
if (( ${#match} )); then
hledgerArgs=(accounts --flat)
else
hledgerArgs=(accounts --flat --depth 1)
fi
;;
code:) hledgerArgs=(codes) ;;
cur:) hledgerArgs=(commodities) ;;
desc:) hledgerArgs=(descriptions) ;;
note:) hledgerArgs=(notes) ;;
payee:) hledgerArgs=(payees) ;;
tag:) hledgerArgs=(tags) ;;
*)
local wordlist
case $query in
amt:) wordlist="< <= > >=" ;;
real:) wordlist="\ 0" ;;
status:) wordlist="\ * !" ;;
*) return 1 ;;
esac
_get_comp_words_by_ref -n '<=>' -c cur
_hledger_compreply "$(
compgen -P "$query" -W "$wordlist" -- "$match"
)"
return 0
;;
esac
_hledger_compreply "$(
_hledger_compgen "$(
_hledger "${hledgerArgs[@]}"
)" "$query"
)"
return 0
}
# Parse the command line so far and fill the array $optarg with the arguments to
# given options. $optarg should be declared by the caller
_hledger_optarg() {
local options=("$@")
local i j offset
optarg=()
# hledger balance --file ~/ledger _
# 0 1 2 3 4
for ((i=1; i < ${#words[@]} - 2; i++)); do
offset=0
for j in "${!options[@]}"; do
if [[ ${words[i]} == "${options[j]}" ]]; then
if [[ ${words[i+1]} == '=' ]]; then
offset=2
else
offset=1
fi
# Pass it through compgen to unescape it
optarg+=("$(compgen -W "${words[i + offset]}")")
fi
done
((i += offset))
done
}
# Get ledger file from -f --file arguments from COMP_WORDS and pass it to the
# 'hledger' call. Note that --rules-file - if present - must also be passed!
# Multiple files are allowed so pass them all in the order of appearance.
_hledger() {
local hledgerArgs=("$@")
local file
local -a optarg
_hledger_optarg -f --file
for file in "${optarg[@]}"; do
[[ -f $file ]] && hledgerArgs+=(--file "$file")
done
_hledger_optarg --rules-file
for file in "${optarg[@]}"; do
[[ -f $file ]] && hledgerArgs+=(--rules-file "$file")
done
# Discard errors. Is there a way to validate files before using them?
hledger "${hledgerArgs[@]}" 2>/dev/null
}
# Include lists of commands and options generated by the Makefile using the
# m4 macro processor.
# Included files must have exactly one newline at EOF to prevent weired errors.
read -r -d "" _hledger_complist_commands <<TEXT
include(`commands.txt')dnl
TEXT
read -r -d "" _hledger_complist_query_filters <<TEXT
include(`query-filters.txt')dnl
TEXT
read -r -d "" _hledger_complist_generic_options <<TEXT
include(`generic-options.txt')dnl
TEXT
# Dashes are replaced by m4 with underscores to form valid identifiers
# Referenced by indirect expansion of $subcommandOptions
dnl
include(`foreach2.m4')dnl
foreach(`cmd', (include(`commands-list.txt')), `
read -r -d "" _hledger_complist_options_`'translit(cmd, -, _) <<TEXT
include(options-cmd.txt)dnl
TEXT
')dnl
# Local Variables:
# sh-basic-offset: 4
# indent-tabs-mode: nil
# End:
# ex: ts=4 sw=4 et