516 lines
17 KiB
Bash
516 lines
17 KiB
Bash
# $1, $2, ... - elements of the list
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# $NLIST_NONSELECTABLE_ELEMENTS - array of indexes (1-based) that cannot be selected
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# $REPLY is the output variable - contains index (1-based) or -1 when no selection
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# $reply (array) is the second part of the output - use the index (REPLY) to get selected element
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#
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# Copy this file into /usr/share/zsh/site-functions/
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# and add 'autoload n-list` to .zshrc
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#
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# This function outputs a list of elements that can be
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# navigated with keyboard. Uses curses library
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emulate -LR zsh
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setopt typesetsilent extendedglob noshortloops
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_nlist_has_terminfo=0
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zmodload zsh/curses
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zmodload zsh/terminfo 2>/dev/null && _nlist_has_terminfo=1
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trap "REPLY=-2; reply=(); return" TERM INT QUIT
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trap "_nlist_exit" EXIT
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# Drawing and input
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autoload n-list-draw n-list-input
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# Cleanup before any exit
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_nlist_exit() {
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setopt localoptions
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setopt extendedglob
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[[ "$REPLY" = -(#c0,1)[0-9]## || "$REPLY" = F<-> || "$REPLY" = "EDIT" || "$REPLY" = "HELP" ]] || REPLY="-1"
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zcurses 2>/dev/null delwin inner
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zcurses 2>/dev/null delwin main
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zcurses 2>/dev/null refresh
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zcurses end
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_nlist_alternate_screen 0
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_nlist_cursor_visibility 1
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unset _nlist_has_terminfo
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}
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# Outputs a message in the bottom of the screen
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_nlist_status_msg() {
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# -1 for border, -1 for 0-based indexing
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zcurses move main $(( term_height - 1 - 1 )) 2
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zcurses clear main eol
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zcurses string main "$1"
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#status_msg_strlen is localized in caller
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status_msg_strlen=$#1
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}
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# Prefer tput, then module terminfo
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_nlist_cursor_visibility() {
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if type tput 2>/dev/null 1>&2; then
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[ "$1" = "1" ] && { tput cvvis; tput cnorm }
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[ "$1" = "0" ] && tput civis
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elif [ "$_nlist_has_terminfo" = "1" ]; then
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[ "$1" = "1" ] && { [ -n $terminfo[cvvis] ] && echo -n $terminfo[cvvis];
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[ -n $terminfo[cnorm] ] && echo -n $terminfo[cnorm] }
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[ "$1" = "0" ] && [ -n $terminfo[civis] ] && echo -n $terminfo[civis]
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fi
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}
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# Reason for this function is that on some systems
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# smcup and rmcup are not knowing why left empty
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_nlist_alternate_screen() {
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[ "$_nlist_has_terminfo" -ne "1" ] && return
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[[ "$1" = "1" && -n "$terminfo[smcup]" ]] && return
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[[ "$1" = "0" && -n "$terminfo[rmcup]" ]] && return
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case "$TERM" in
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*rxvt*)
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[ "$1" = "1" ] && echo -n $'\x1b7\x1b[?47h'
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[ "$1" = "0" ] && echo -n $'\x1b[2J\x1b[?47l\x1b8'
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;;
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*)
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[ "$1" = "1" ] && echo -n $'\x1b[?1049h'
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[ "$1" = "0" ] && echo -n $'\x1b[?1049l'
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# just to remember two other that work: $'\x1b7\x1b[r\x1b[?47h', $'\x1b[?47l\x1b8'
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;;
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esac
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}
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_nlist_compute_user_vars_difference() {
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if [[ "${(t)NLIST_NONSELECTABLE_ELEMENTS}" != "array" &&
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"${(t)NLIST_NONSELECTABLE_ELEMENTS}" != "array-local" ]]
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then
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last_element_difference=0
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current_difference=0
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else
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last_element_difference=$#NLIST_NONSELECTABLE_ELEMENTS
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current_difference=0
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local idx
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for idx in "${(n)NLIST_NONSELECTABLE_ELEMENTS[@]}"; do
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[ "$idx" -le "$NLIST_CURRENT_IDX" ] && current_difference+=1 || break
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done
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fi
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}
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# List was processed, check if variables aren't off range
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_nlist_verify_vars() {
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[ "$NLIST_CURRENT_IDX" -gt "$last_element" ] && NLIST_CURRENT_IDX="$last_element"
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[[ "$NLIST_CURRENT_IDX" -eq 0 && "$last_element" -ne 0 ]] && NLIST_CURRENT_IDX=1
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(( NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN=0+((NLIST_CURRENT_IDX-1)/page_height)*page_height+1 ))
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}
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# Compute the variables which are shown to the user
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_nlist_setup_user_vars() {
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if [ "$1" = "1" ]; then
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# Basic values when there are no non-selectables
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NLIST_USER_CURRENT_IDX="$NLIST_CURRENT_IDX"
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NLIST_USER_LAST_ELEMENT="$last_element"
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else
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_nlist_compute_user_vars_difference
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NLIST_USER_CURRENT_IDX=$(( NLIST_CURRENT_IDX - current_difference ))
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NLIST_USER_LAST_ELEMENT=$(( last_element - last_element_difference ))
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fi
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}
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_nlist_colorify_disp_list() {
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local col=$'\x1b[00;34m' reset=$'\x1b[0m'
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[ -n "$NLIST_COLORING_COLOR" ] && col="$NLIST_COLORING_COLOR"
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[ -n "$NLIST_COLORING_END_COLOR" ] && reset="$NLIST_COLORING_END_COLOR"
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if [ "$NLIST_COLORING_MATCH_MULTIPLE" -eq 1 ]; then
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disp_list=( "${(@)disp_list//(#mi)$~NLIST_COLORING_PATTERN/$col${MATCH}$reset}" )
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else
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disp_list=( "${(@)disp_list/(#mi)$~NLIST_COLORING_PATTERN/$col${MATCH}$reset}" )
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fi
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}
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#
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# Main code
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#
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# Check if there is proper input
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if [ "$#" -lt 1 ]; then
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echo "Usage: n-list element_1 ..."
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return 1
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fi
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REPLY="-1"
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typeset -ga reply
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reply=()
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integer term_height="$LINES"
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integer term_width="$COLUMNS"
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if [[ "$term_height" -lt 1 || "$term_width" -lt 1 ]]; then
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local stty_out=$( stty size )
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term_height="${stty_out% *}"
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term_width="${stty_out#* }"
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fi
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integer inner_height=term_height-3
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integer inner_width=term_width-3
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integer page_height=inner_height
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integer page_width=inner_width
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typeset -a list disp_list
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integer last_element=$#
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local action
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local final_key
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integer selection
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integer last_element_difference=0
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integer current_difference=0
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local prev_search_buffer=""
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integer prev_uniq_mode=0
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integer prev_start_idx=-1
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local MBEGIN MEND MATCH mbegin mend match
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# Iteration over predefined keywords
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integer curkeyword nkeywords
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local keywordisfresh="0"
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if [[ "${(t)keywords}" != *array* ]]; then
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local -a keywords
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keywords=()
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fi
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curkeyword=0
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nkeywords=${#keywords}
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# Iteration over themes
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integer curtheme nthemes
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local themeisfresh="0"
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if [[ "${(t)themes}" != *array* ]]; then
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local -a themes
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themes=()
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fi
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curtheme=0
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nthemes=${#themes}
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# Ability to remember the list between calls
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if [[ -z "$NLIST_REMEMBER_STATE" || "$NLIST_REMEMBER_STATE" -eq 0 || "$NLIST_REMEMBER_STATE" -eq 2 ]]; then
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NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN=1
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NLIST_CURRENT_IDX=1
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NLIST_IS_SEARCH_MODE=0
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NLIST_SEARCH_BUFFER=""
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NLIST_TEXT_OFFSET=0
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NLIST_IS_UNIQ_MODE=0
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NLIST_IS_F_MODE=0
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# Zero - because it isn't known, unless we
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# confirm that first element is selectable
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NLIST_USER_CURRENT_IDX=0
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[[ ${NLIST_NONSELECTABLE_ELEMENTS[(r)1]} != 1 ]] && NLIST_USER_CURRENT_IDX=1
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NLIST_USER_LAST_ELEMENT=$(( last_element - $#NLIST_NONSELECTABLE_ELEMENTS ))
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# 2 is init once, then remember
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[ "$NLIST_REMEMBER_STATE" -eq 2 ] && NLIST_REMEMBER_STATE=1
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fi
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if [ "$NLIST_START_IN_SEARCH_MODE" -eq 1 ]; then
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NLIST_START_IN_SEARCH_MODE=0
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NLIST_IS_SEARCH_MODE=1
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fi
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if [ -n "$NLIST_SET_SEARCH_TO" ]; then
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NLIST_SEARCH_BUFFER="$NLIST_SET_SEARCH_TO"
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NLIST_SET_SEARCH_TO=""
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fi
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if [ "$NLIST_START_IN_UNIQ_MODE" -eq 1 ]; then
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NLIST_START_IN_UNIQ_MODE=0
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NLIST_IS_UNIQ_MODE=1
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fi
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_nlist_alternate_screen 1
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zcurses init
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zcurses delwin main 2>/dev/null
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zcurses delwin inner 2>/dev/null
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zcurses addwin main "$term_height" "$term_width" 0 0
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zcurses addwin inner "$inner_height" "$inner_width" 1 2
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# From n-list.conf
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[ "$colorpair" = "" ] && colorpair="white/black"
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[ "$border" = "0" ] || border="1"
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local background="${colorpair#*/}"
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local backuptheme="$colorpair/$bold"
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zcurses bg main "$colorpair"
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zcurses bg inner "$colorpair"
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if [ "$NLIST_IS_SEARCH_MODE" -ne 1 ]; then
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_nlist_cursor_visibility 0
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fi
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zcurses refresh
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#
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# Listening for input
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#
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local key keypad
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# Clear input buffer
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zcurses timeout main 0
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zcurses input main key keypad
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zcurses timeout main -1
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key=""
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keypad=""
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# This loop makes script faster on some Zsh's (e.g. 5.0.8)
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repeat 1; do
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list=( "$@" )
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done
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last_element="$#list"
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while (( 1 )); do
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# Do searching (filtering with string)
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if [ -n "$NLIST_SEARCH_BUFFER" ]; then
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# Compute new list?
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if [[ "$NLIST_SEARCH_BUFFER" != "$prev_search_buffer" || "$NLIST_IS_UNIQ_MODE" -ne "$prev_uniq_mode"
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|| "$NLIST_IS_F_MODE" -ne "$prev_f_mode" ]]
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then
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prev_search_buffer="$NLIST_SEARCH_BUFFER"
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prev_uniq_mode="$NLIST_IS_UNIQ_MODE"
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prev_f_mode="$NLIST_IS_F_MODE"
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# regenerating list -> regenerating disp_list
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prev_start_idx=-1
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# Take all elements, including duplicates and non-selectables
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typeset +U list
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repeat 1; do
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list=( "$@" )
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done
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# Remove non-selectable elements
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[ "$#NLIST_NONSELECTABLE_ELEMENTS" -gt 0 ] && for i in "${(nO)NLIST_NONSELECTABLE_ELEMENTS[@]}"; do
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if [[ "$i" = <-> ]]; then
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list[$i]=()
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fi
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done
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# Remove duplicates
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[ "$NLIST_IS_UNIQ_MODE" -eq 1 ] && typeset -U list
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last_element="$#list"
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# Next do the filtering
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local search_buffer="${NLIST_SEARCH_BUFFER%% ##}"
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search_buffer="${search_buffer## ##}"
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search_buffer="${search_buffer//(#m)[][*?|#~^()><\\]/\\$MATCH}"
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local search_pattern=""
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local colsearch_pattern=""
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if [ -n "$search_buffer" ]; then
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# The repeat will make the matching work on a fresh heap
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repeat 1; do
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if [ "$NLIST_IS_F_MODE" -eq "1" ]; then
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search_pattern="${search_buffer// ##/*~^(#a1)*}"
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colsearch_pattern="${search_buffer// ##/|(#a1)}"
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list=( "${(@M)list:#(#ia1)*$~search_pattern*}" )
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elif [ "$NLIST_IS_F_MODE" -eq "2" ]; then
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search_pattern="${search_buffer// ##/*~^(#a2)*}"
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colsearch_pattern="${search_buffer// ##/|(#a2)}"
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list=( "${(@M)list:#(#ia2)*$~search_pattern*}" )
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else
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# Pattern will be *foo*~^*bar* (inventor: Mikael Magnusson)
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search_pattern="${search_buffer// ##/*~^*}"
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# Pattern will be (foo|bar)
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colsearch_pattern="${search_buffer// ##/|}"
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list=( "${(@M)list:#(#i)*$~search_pattern*}" )
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fi
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done
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last_element="$#list"
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fi
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# Called after processing list
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_nlist_verify_vars
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fi
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_nlist_setup_user_vars 1
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integer end_idx=$(( NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN + page_height - 1 ))
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[ "$end_idx" -gt "$last_element" ] && end_idx=last_element
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if [ "$prev_start_idx" -ne "$NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN" ]; then
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prev_start_idx="$NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN"
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disp_list=( "${(@)list[NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN, end_idx]}" )
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if [ -n "$colsearch_pattern" ]; then
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local red=$'\x1b[00;31m' reset=$'\x1b[00;00m'
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# The repeat will make the matching work on a fresh heap
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repeat 1; do
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if [ "$NLIST_IS_F_MODE" -eq "1" ]; then
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disp_list=( "${(@)disp_list//(#mia1)($~colsearch_pattern)/$red${MATCH}$reset}" )
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elif [ "$NLIST_IS_F_MODE" -eq "2" ]; then
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disp_list=( "${(@)disp_list//(#mia2)($~colsearch_pattern)/$red${MATCH}$reset}" )
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else
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disp_list=( "${(@)disp_list//(#mi)($~colsearch_pattern)/$red${MATCH}$reset}" )
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fi
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done
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fi
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# We have display list, lets replace newlines with "\n" when needed (1/2)
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[ "$NLIST_REPLACE_NEWLINES" -eq 1 ] && disp_list=( "${(@)disp_list//$'\n'/\\n}" )
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fi
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# Output colored list
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zcurses clear inner
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n-list-draw "$(( (NLIST_CURRENT_IDX-1) % page_height + 1 ))" \
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"$page_height" "$page_width" 0 0 "$NLIST_TEXT_OFFSET" inner \
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"$disp_list[@]"
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else
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# There is no search, but there was in previous loop
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# OR
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# Uniq mode was entered or left out
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# -> compute new list
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if [[ -n "$prev_search_buffer" || "$NLIST_IS_UNIQ_MODE" -ne "$prev_uniq_mode" ]]; then
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prev_search_buffer=""
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prev_uniq_mode="$NLIST_IS_UNIQ_MODE"
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# regenerating list -> regenerating disp_list
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prev_start_idx=-1
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# Take all elements, including duplicates and non-selectables
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typeset +U list
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repeat 1; do
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list=( "$@" )
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done
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# Remove non-selectable elements only when in uniq mode
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[ "$NLIST_IS_UNIQ_MODE" -eq 1 ] && [ "$#NLIST_NONSELECTABLE_ELEMENTS" -gt 0 ] &&
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for i in "${(nO)NLIST_NONSELECTABLE_ELEMENTS[@]}"; do
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if [[ "$i" = <-> ]]; then
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list[$i]=()
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fi
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done
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# Remove duplicates when in uniq mode
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[ "$NLIST_IS_UNIQ_MODE" -eq 1 ] && typeset -U list
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last_element="$#list"
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# Called after processing list
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_nlist_verify_vars
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fi
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# "1" - shouldn't bother with non-selectables
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_nlist_setup_user_vars "$NLIST_IS_UNIQ_MODE"
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integer end_idx=$(( NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN + page_height - 1 ))
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[ "$end_idx" -gt "$last_element" ] && end_idx=last_element
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if [ "$prev_start_idx" -ne "$NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN" ]; then
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prev_start_idx="$NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN"
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disp_list=( "${(@)list[NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN, end_idx]}" )
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[ -n "$NLIST_COLORING_PATTERN" ] && _nlist_colorify_disp_list
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# We have display list, lets replace newlines with "\n" when needed (2/2)
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[ "$NLIST_REPLACE_NEWLINES" -eq 1 ] && disp_list=( "${(@)disp_list//$'\n'/\\n}" )
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fi
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# Output the list
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zcurses clear inner
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n-list-draw "$(( (NLIST_CURRENT_IDX-1) % page_height + 1 ))" \
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"$page_height" "$page_width" 0 0 "$NLIST_TEXT_OFFSET" inner \
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"$disp_list[@]"
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fi
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local status_msg_strlen
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local keywordmsg=""
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if [ "$keywordisfresh" = "1" ]; then
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keywordmsg="($curkeyword/$nkeywords) "
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keywordisfresh="0"
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fi
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local thememsg=""
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if [ "$themeisfresh" = "1" ]; then
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local theme="$backuptheme"
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[ "$curtheme" -gt 0 ] && theme="${themes[curtheme]}"
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thememsg="($curtheme/$nthemes $theme) "
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themeisfresh="0"
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fi
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local _txt2="" _txt3=""
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[ "$NLIST_IS_UNIQ_MODE" -eq 1 ] && _txt2="[-UNIQ-] "
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[ "$NLIST_IS_F_MODE" -eq 1 ] && _txt3="[-FIX-] "
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[ "$NLIST_IS_F_MODE" -eq 2 ] && _txt3="[-FIX2-] "
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if [ "$NLIST_IS_SEARCH_MODE" = "1" ]; then
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_nlist_status_msg "${_txt2}${_txt3}${keywordmsg}${thememsg}Filtering with: ${NLIST_SEARCH_BUFFER// /+}"
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elif [[ ${NLIST_NONSELECTABLE_ELEMENTS[(r)$NLIST_CURRENT_IDX]} != $NLIST_CURRENT_IDX ||
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-n "$NLIST_SEARCH_BUFFER" || "$NLIST_IS_UNIQ_MODE" -eq 1 ]]; then
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local _txt=""
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[ -n "$NLIST_GREP_STRING" ] && _txt=" [$NLIST_GREP_STRING]"
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_nlist_status_msg "${_txt2}${_txt3}${keywordmsg}${thememsg}Current #$NLIST_USER_CURRENT_IDX (of #$NLIST_USER_LAST_ELEMENT entries)$_txt"
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else
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_nlist_status_msg "${keywordmsg}${thememsg}"
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fi
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[ "$border" = "1" ] && zcurses border main
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local top_msg=" ${(C)ZSH_NAME} $ZSH_VERSION, shell level $SHLVL "
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if [[ "${NLIST_ENABLED_EVENTS[(r)F1]}" = "F1" ]]; then
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top_msg=" F1-change view,$top_msg"
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fi
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zcurses move main 0 $(( term_width / 2 - $#top_msg / 2 ))
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zcurses string main $top_msg
|
|
|
|
zcurses refresh main inner
|
|
zcurses move main $(( term_height - 1 - 1 )) $(( status_msg_strlen + 2 ))
|
|
|
|
# Wait for input
|
|
zcurses input main key keypad
|
|
|
|
# Get the special (i.e. "keypad") key or regular key
|
|
if [ -n "$key" ]; then
|
|
final_key="$key"
|
|
elif [ -n "$keypad" ]; then
|
|
final_key="$keypad"
|
|
else
|
|
_nlist_status_msg "Inproper input detected"
|
|
zcurses refresh main inner
|
|
fi
|
|
|
|
n-list-input "$NLIST_CURRENT_IDX" "$NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN" \
|
|
"$page_height" "$page_width" "$last_element" "$NLIST_TEXT_OFFSET" \
|
|
"$final_key" "$NLIST_IS_SEARCH_MODE" "$NLIST_SEARCH_BUFFER" \
|
|
"$NLIST_IS_UNIQ_MODE" "$NLIST_IS_F_MODE"
|
|
|
|
selection="$reply[1]"
|
|
action="$reply[2]"
|
|
NLIST_CURRENT_IDX="$reply[3]"
|
|
NLIST_FROM_WHAT_IDX_LIST_IS_SHOWN="$reply[4]"
|
|
NLIST_TEXT_OFFSET="$reply[5]"
|
|
NLIST_IS_SEARCH_MODE="$reply[6]"
|
|
NLIST_SEARCH_BUFFER="$reply[7]"
|
|
NLIST_IS_UNIQ_MODE="$reply[8]"
|
|
NLIST_IS_F_MODE="$reply[9]"
|
|
|
|
if [ -z "$action" ]; then
|
|
continue
|
|
elif [ "$action" = "SELECT" ]; then
|
|
REPLY="$selection"
|
|
reply=( "$list[@]" )
|
|
break
|
|
elif [ "$action" = "QUIT" ]; then
|
|
REPLY=-1
|
|
reply=( "$list[@]" )
|
|
break
|
|
elif [ "$action" = "REDRAW" ]; then
|
|
zcurses clear main redraw
|
|
zcurses clear inner redraw
|
|
elif [[ "$action" = F<-> ]]; then
|
|
REPLY="$action"
|
|
reply=( "$list[@]" )
|
|
break
|
|
elif [[ "$action" = "EDIT" ]]; then
|
|
REPLY="EDIT"
|
|
reply=( "$list[@]" )
|
|
break
|
|
elif [[ "$action" = "HELP" ]]; then
|
|
REPLY="HELP"
|
|
reply=( "$list[@]" )
|
|
break
|
|
fi
|
|
done
|
|
|
|
# vim: set filetype=zsh:
|