YunoHost-Apps/flohmarkt_ynh
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a corner case

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```
the following cases need to be taken care of
'--arg=value'    → works
'--arg= value'   → works
'--arg=-value'   → works
'--arg= -v'      or
'--arg= --value' → works if not exists arg '[v]=value='
                 → $arg will be set to '-v' or '--value'
  but if exists '[v]=value=' this is not the expected behavior:
  → then $arg is expected to contain an empty value and '-v' or '--value'
    is expected to be interpreted as its own valid argument
  (found in use of ynh_replace_string called by ynh_add_config)
  solution:
  insert an empty arg into array arguments to be later interpreted by
  getopts as the missing value to --arg=
```

There's still missing to limit adding of an additional empty argument
only once when the actual argument fits the actual option_flag
This commit is contained in:
Chris Vogel 2024-05-27 20:18:42 +02:00
parent 59d2579bdf
commit 560221861c
1 changed files with 91 additions and 32 deletions
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123
scripts/_common.sh
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@ -47,9 +47,9 @@ flohmarkt_old_service="flohmarkt"
#=================================================
# debug output
flohmarkt_debug=0
flohmarkt_debug=1
flohmarkt_print_debug() {
if [[ $flohmarkt_debug -eq 1 ]]; then echo "$*"; fi
if [[ $flohmarkt_debug -eq 1 ]]; then echo "flohmarkt_debug: $*"; fi
}
# Redisgn of ynh_handle_getopts_args for flohmarkt to be tested as `flohmarkt_ynh_handle_getopts_args`
@ -114,9 +114,12 @@ flohmarkt_print_debug() {
# deprecated before the last re-design of this sub)
#
# Requires YunoHost version 3.2.2 or higher.
flohmarkt_ynh_handle_getopts_args() {
# flohmarkt_ynh_handle_getopts_args() {
# TODO testing:
ynh_handle_getopts_args() {
# Manage arguments only if there's some provided
set +o xtrace # set +x
# TODO set +o xtrace # set +x
set +x
if [ $# -eq 0 ]; then
ynh_print_warn --message="ynh_handle_getopts_args called without arguments"
return
@ -132,12 +135,13 @@ flohmarkt_ynh_handle_getopts_args() {
local option_flag=""
## go through all possible options and replace arguments with short versions
flohmarkt_print_debug "arguments = '${arguments[@]}"
flohmarkt_print_debug "args_array = '${!args_array[@]}'"
flohmarkt_print_debug "args_array = (${!args_array[@]})"
for option_flag in "${!args_array[@]}"; do
flohmarkt_print_debug "option_flag = $option_flag"
# Concatenate each option_flags of the array to build the string of arguments for getopts
# Will looks like 'abcd' for -a -b -c -d
# If the value of an option_flag finish by =, it's an option with additionnal values. (e.g. --user bob or -u bob)
# If the value of an option_flag finish by =, it's an option with additionnal values.
# (e.g. --user bob or -u bob)
# Check the last character of the value associate to the option_flag
flohmarkt_print_debug "compare to '${args_array[$option_flag]: -1}'"
if [ "${args_array[$option_flag]: -1}" = "=" ]; then
@ -153,13 +157,67 @@ flohmarkt_ynh_handle_getopts_args() {
## for one possible option: look at each argument supplied:
for arg in $(seq 0 $((${#arguments[@]} - 1))); do
flohmarkt_print_debug "arg = '$arg', argument = '${arguments[arg]}'"
# the following cases need to be taken care of
# '--arg=value' → works
# '--arg= value' → works
# '--arg=-value' → works
# '--arg= -v' or
# '--arg= --value' → works if not exists arg '[v]=value='
# → $arg will be set to '-v' or '--value'
# but if exists '[v]=value=' this is not the expected behavior:
# → then $arg is expected to contain an empty value and '-v' or '--value'
# is expected to be interpreted as its own valid argument
# (found in use of ynh_replace_string called by ynh_add_config)
# solution:
# insert an empty arg into array arguments to be later interpreted by
# getopts as the missing value to --arg=
# TODO
flohmarkt_print_debug "TODO: {argument[arg]:-1}='${arguments[arg]: -1}'"
if [[ ${arguments[arg]: -1} == '=' ]] \
&& [[ "$option_flag" == 'r' ]]
# TODO && ${arguments[arg]} is actual option_flag
Dieser Teil läuft für jedes argument x Mal (jeweils 1x für jedes Element von @args_array.
Wir wollen aber nur einmal die Änderung vornehmen, und zwar genau dann, wenn das aktuelle
option_flag zum aktuellen argument[arg] passt.
then
# arg ends with a '='
local this_argument=${arguments[arg]}
local next_argument=${arguments[arg+1]}
# for looking up next_argument in args_array remove optionally trailing '='
next_argument=$( printf '%s' "$next_argument" | cut -d'=' -f1 )
flohmarkt_print_debug "this_argument='$this_argument', next_argument='$next_argument'"
# check if next_argument is a value in args_array
# → starts with '--' and the rest of the argument excluding optional trailing '='
# of the string is a value in associative array args_array
# → or starts with '-' and the rest of the argument is a valid key in args_array
# (long argument could already have been replaced by short version before)
flohmarkt_print_debug "args_array values='${args_array[@]}'"
flohmarkt_print_debug "args_array keys='${!args_array[@]}'"
flohmarkt_print_debug "{next_argument:2}='${next_argument:2}'"
flohmarkt_print_debug "{next_argument:1:1}='${next_argument:1:1}'"
set -x
if [[ "${next_argument:0:2}" == '--' ]] \
&& [[ -n $( printf '%s ' "${args_array[@]}" | fgrep -w "${next_argument:2}" ) ]] \
|| [[ "${next_argument:0:1}" == '-' ]] \
&& [[ -n $( printf '%s ' "\"${!args_array[@]}\"" | fgrep -w "${next_argument:1:1}" ) ]]
then
# insert an empty value to array arguments to be interpreted as the value
# for argument[arg]
arguments=( ${arguments[@]:0:arg+1} '' ${arguments[@]:arg+1})
flohmarkt_print_debug "now arguments='${arguments[@]}'"
elif [[ ${arguments[arg]} == '--replace_string=' ]] && [[ $option_flag == 'r' ]]; then
exit
fi
fi
# Replace long option with = (match the beginning of the argument)
arguments[arg]="$(printf '%s\n' "${arguments[arg]}" | sed "s/^--${args_array[$option_flag]}/-${option_flag}/")"
flohmarkt_print_debug "sed - printf '%s\n' \"${arguments[arg]}\" | sed \"s/^--${args_array[$option_flag]}/-${option_flag} /\""
arguments[arg]="$(printf '%s\n' "${arguments[arg]}" \
| sed "s/^--${args_array[$option_flag]}/-${option_flag}/")"
flohmarkt_print_debug "arg = '$arg', argument = '${arguments[arg]}'"
# And long option without = (match the whole line)
arguments[arg]="$(printf '%s\n' "${arguments[arg]}" | sed "s/^--${args_array[$option_flag]%=}$/-${option_flag}/")"
flohmarkt_print_debug "sed - printf '%s\n' \"${arguments[arg]}\" | sed \"s/^--${args_array[$option_flag]%=}$/-${option_flag} /\""
arguments[arg]="$(printf '%s\n' "${arguments[arg]}" \
| sed "s/^--${args_array[$option_flag]%=}$/-${option_flag}/")"
flohmarkt_print_debug "arg = '$arg', argument = '${arguments[arg]}'"
done
flohmarkt_print_debug "arguments = '${arguments[@]}'"
@ -170,9 +228,6 @@ flohmarkt_ynh_handle_getopts_args() {
# The function call is necessary here to allow `getopts` to use $@
parse_arg() {
flohmarkt_print_debug "========= parse_arg started ======== , arguments='$@', getopts_parameters: '$getopts_parameters'"
for ME in "$@"; do
flohmarkt_print_debug " '$ME'"
done
# Initialize the index of getopts
OPTIND=1
# getopts will fill $parameter with the letter of the option it has read.
@ -192,22 +247,22 @@ flohmarkt_ynh_handle_getopts_args() {
# Use the long option, corresponding to the short option read by getopts, as a variable
# (e.g. for [u]=user, 'user' will be used as a variable)
# Also, remove '=' at the end of the long option
# The variable name will be stored in 'option_var'
# The variable name will be stored in 'option_var' as a nameref
option_var="${args_array[$parameter]%=}"
flohmarkt_print_debug "option_var='$option_var'"
# if there's a '=' at the end of the long option name, this option takes values
if [ "${args_array[$parameter]: -1}" != "=" ]; then
# no argument expected for option - set option variable to '1'
# 'eval ${option_var}' will use the content of 'option_var'
flohmarkt_print_debug "option_var='${option_var}', option_value='1'"
option_value=1
return 1
else
# remove leading and trailing spaces from OPTARG
OPTARG="$( printf '%s' "${OPTARG}" | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')"
flohmarkt_print_debug "option_var='${option_var}', OPTARG='${OPTARG}'"
option_value="${OPTARG}"
return 2
fi
flohmarkt_print_debug "option_value='$option_value'"
# set shift_value according to the number of options interpreted by getopts
shift_value=$(( $OPTIND - 1 ))
flohmarkt_print_debug "shift_value='$shift_value'"
fi
}
@ -222,10 +277,10 @@ flohmarkt_ynh_handle_getopts_args() {
# (But an associative arrays isn't always sorted in the correct order...)
# Remove all ':' in getopts_parameters, if used.
legacy_args=${legacy_args:-${getopts_parameters//:/}}
while [ ${#arguments} -ne 0 ]; do
while [[ -v 'arguments' ]] && [[ ${#arguments} -ne 0 ]]; do
flohmarkt_print_debug '======= start while loop ======='
local shift_value=0
local option_value='' # the value to be filled into ${!option_var}
flohmarkt_print_debug '======= start while loop ======='
argument=${arguments[0]}
flohmarkt_print_debug "argument='$argument'"
# if state once changed to positional parameter mode, all the rest of the arguments will
@ -237,7 +292,6 @@ flohmarkt_ynh_handle_getopts_args() {
elif [ $positional_mode == 0 ] && [ "${argument:0:1}" == '-' ]; then
flohmarkt_print_debug "getopts, arguments='${arguments[@]}', starting parse_arg"
parse_arg "${arguments[@]}"
shift_value=$?
else
positional_mode=1 # set state to positional parameter mode
flohmarkt_print_debug "positional parameter, argument='$argument'"
@ -278,22 +332,27 @@ flohmarkt_ynh_handle_getopts_args() {
fi
# fill option_var with value found
# if ${option_var} is an array, fill mutiple values as array cells
# if ${!option_var} is an array, fill mutiple values as array cells
# otherwise concatenate them seperated by ';'
flohmarkt_print_debug "option_var '$option_var', option_value '$option_value'"
# TODO explain use of nameref
local -n option_ref=$option_var
flohmarkt_print_debug "option_ref declare: '$(declare -p option_ref)'"
flohmarkt_print_debug "'$option_var' declare: '$(declare -p $option_var)'"
if declare -p $option_var | grep '^declare -a ' > /dev/null; then
# hurray it's an array
flohmarkt_print_debug "hurray! '$option_var' is an array."
eval ${option_var}+='("${option_value}")'
elif [[ -z ${!option_var} ]]; then
eval ${option_var}='"${option_value}"'
${option_ref}+='("${option_value}")'
elif ! [[ -v "$option_var" ]] || [[ -z "$option_ref" ]]; then
flohmarkt_print_debug "'$option_var' is unset or empty"
option_ref=${option_value}
else
eval ${option_var}+='";${option_value}"'
flohmarkt_print_debug "appending to string '$option_ref'"
option_ref+=";${option_value}"
fi
flohmarkt_print_debug "option_var '$option_var', option_value '${!option_var}'"
flohmarkt_print_debug "now declared $option_var: '$(declare -p $option_var)'"
# shift value off arguments array
flohmarkt_print_debug "shifting '$shift_value' off arguments"
flohmarkt_print_debug "shifting '$shift_value' off arguments='${arguments[@]}'"
arguments=("${arguments[@]:${shift_value}}")
done
@ -307,7 +366,7 @@ flohmarkt_ynh_handle_getopts_args() {
# local copy of ynh_local_curl() to test some improvement
# https://github.com/YunoHost/issues/issues/2396
# https://codeberg.org/flohmarkt/flohmarkt_ynh/issues/51
flohmarkt_ynh_local_curl() {
ynh_local_curl() {
# Curl abstraction to help with POST requests to local pages (such as installation forms)
#
# usage: ynh_local_curl "page" "key1=value1" "key2=value2" ...
@ -366,7 +425,7 @@ flohmarkt_ynh_local_curl() {
local -a data
local -a curl_opt_args # optional arguments to `curl`
# Manage arguments with getopts
flohmarkt_ynh_handle_getopts_args "$@"
ynh_handle_getopts_args "$@"
# Define url of page to curl
# $location contains either an URL or just a page