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Kevin MacMartin
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24
readme.md
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24
readme.md
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# vnotes
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Manage your notes with flat files and your system text editor
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## Dependencies
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* [bash](https://www.gnu.org/software/bash/bash.html)
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* [kbd](http://www.kbd-project.org)
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* [ncurses](https://invisible-island.net/ncurses/ncurses.html)
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## Configuration
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Configuration is handled using environment variables:
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* `EDITOR`: The text editor that should be used to open notes (default: `/usr/bin/vim`)
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* `VNOTES_FOLDER`: The folder notes should be managed in (default: `$HOME/Notes`)
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* `VNOTES_EXTENSION`: The file extension notes should have (default: `md`)
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## Usage
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* `vnotes [PATTERN]`: If multiple notes include `[PATTERN]` a list of matching notes is presented to choose from, otherwise it opens the closest matching note
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* `-c|--create [NAME]`: Creates a new note named `[NAME]`
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* `-d|--delete [NAME]`: Deletes the note named `[NAME]`
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* `-h|--help`: Shows the help text
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345
vnotes
Executable file
345
vnotes
Executable file
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#!/usr/bin/env bash
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#
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# vnotes: manage your notes
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#
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# Version: 1.0
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#
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# Written by Kevin MacMartin <prurigro@gmail.com>
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# Released under the MIT license
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#
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shopt -s extglob
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# Environment config
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EDITOR=${EDITOR:='/usr/bin/vim'}
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VNOTES_FOLDER=${VNOTES_FOLDER:="$HOME/Notes"}
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VNOTES_EXTENSION=${NOTES_SUFFIX:='md'}
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# Dependencies
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deps=('getkeycodes' 'stty' 'tput')
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declare -a documents=()
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max_docwidth=0
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# Colour Scheme
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[[ -t 1 ]] && {
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c_d=$'\e[1;30m' # DARK GREY
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c_r=$'\e[1;31m' # RED
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c_g=$'\e[1;32m' # GREEN
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c_y=$'\e[1;33m' # YELLOW
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c_b=$'\e[1;34m' # BLUE
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c_m=$'\e[1;35m' # VIOLET
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c_t=$'\e[1;36m' # TEAL
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c_w=$'\e[1;37m' # WHITE
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c_u=$'\e[1;4;37m' # UNDERLINE WHITE
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c_h=$'\e[1;41m' # HIGHLIGHT RED
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c_c=$'\e[0m' # DISABLES COLOUR
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}
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# Display help text
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function help {
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script_name="${0//*\/}"
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printf '\n%s\n\n' "${c_m}vnotes${c_w} - manage your notes$c_c"
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printf '%s\n' "${c_b}USAGE$c_c"
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printf ' %-43s%s\n' "${c_d}[${c_y}PATTERN$c_d]$c_c" ' — opens single match or lists multiple'
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printf ' %-43s%s\n' "$c_w-c$c_d|$c_w--create ${c_d}[${c_y}NAME$c_d]$c_c" ' — create a new note'
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printf ' %-43s%s\n' "$c_w-d$c_d|$c_w--delete ${c_d}[${c_y}NAME$c_d]$c_c" ' — deletes a note'
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printf ' %-43s%s\n\n' "$c_w-h$c_d|$c_w--help$c_c" ' — show this help text'
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exit
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}
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# Function to process key codes
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function getkeycode {
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while read -r; do
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[[ "$REPLY" =~ ^[0-9][0-9]*\ (.*)$ ]] && {
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printf '%s\n' "${BASH_REMATCH[1]}"
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break
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}
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done <<< "$1"
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}
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function prompt {
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printf '%s ' "${c_w}Please choose a number from the list ${c_d}[$c_b$one_display-$upto$c_d] $c_d(${c_m}Q$c_w to quit$c_d)$c_w:$c_c"
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}
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function power {
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local number="$1" power="$2" total=1
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for (( x=0; x<"$power"; x++ )); do
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total=$(( total * number ))
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done
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printf '%s\n' "$total"
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}
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function open_note {
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printf '%s %s\n' "${c_y}Opening:" "$c_m${documents[$1]}$c_c"
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[[ -n "$tty_state" ]] && stty "$tty_state"
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"$EDITOR" "$VNOTES_FOLDER/${documents[$1]}.$VNOTES_EXTENSION"
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exit
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}
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function create_note {
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if [[ -n "$1" ]]; then
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note="$VNOTES_FOLDER/${1}.$VNOTES_EXTENSION"
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"$EDITOR" "$note"
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else
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printf '%s %s\n' "${c_r}ERROR:$c_c" 'No name given for the new note' >&2
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exit 1
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fi
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}
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function delete_note {
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if [[ -n "$1" ]]; then
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note="$VNOTES_FOLDER/${1}.$VNOTES_EXTENSION"
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if [[ -f "$note" ]]; then
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rm "$note"
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printf '%s\n' "${c_w}The note '${c_m}$1${c_w}' has been ${c_r}DELETED$c_c"
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else
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printf '%s %s\n' "${c_r}ERROR:$c_c" "${c_w}The note '${c_m}$1${c_w}' doesn't exist" >&2
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exit 1
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fi
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else
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printf '%s %s\n' "${c_r}ERROR:$c_c" 'No name given for the new note' >&2
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exit 1
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fi
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}
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# Search for notes and open the closest match, or list out options if more than one exists
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function search_notes {
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# Take the first input as the key
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key="$1"
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# Define Q, q, and Return respectively
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alpha_Q=$(getkeycode "$(printf '%s' 'Q' | od -t o1)")
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alpha_q=$(getkeycode "$(printf '%s' 'q' | od -t o1)")
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key_cr=$(getkeycode "$(printf '\n' | od -t o1)")
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key_0=$(getkeycode "$(printf '%s' '0' | od -t o1)")
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key_1=$(getkeycode "$(printf '%s' '1' | od -t o1)")
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key_2=$(getkeycode "$(printf '%s' '2' | od -t o1)")
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key_3=$(getkeycode "$(printf '%s' '3' | od -t o1)")
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key_4=$(getkeycode "$(printf '%s' '4' | od -t o1)")
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key_5=$(getkeycode "$(printf '%s' '5' | od -t o1)")
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key_6=$(getkeycode "$(printf '%s' '6' | od -t o1)")
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key_7=$(getkeycode "$(printf '%s' '7' | od -t o1)")
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key_8=$(getkeycode "$(printf '%s' '8' | od -t o1)")
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key_9=$(getkeycode "$(printf '%s' '9' | od -t o1)")
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# Build the list of notes and track the longest document name
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if [[ -n "$key" ]]; then
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for each in "$VNOTES_FOLDER"/*."$VNOTES_EXTENSION"; do
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[[ "$each" =~ $key ]] && {
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each="${each/*\/}"
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each="${each/\.$VNOTES_EXTENSION}"
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documents=("${documents[@]}" "$each")
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(( max_docwidth < ${#each} )) && max_docwidth=${#each}
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}
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done
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else
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for each in "$VNOTES_FOLDER"/*."$VNOTES_EXTENSION"; do
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each="${each/*\/}"
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each="${each/\.$VNOTES_EXTENSION}"
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documents=("${documents[@]}" "$each")
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(( max_docwidth < ${#each} )) && max_docwidth=${#each}
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done
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fi
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# Exit with an error if the list of notes is empty
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(( ${#documents[*]} )) || {
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printf '%s\n' "Can't find $key"
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exit 1
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}
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if (( ${#documents[*]} == 1 )); then
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[[ "${documents[0]}" =~ ^\ *\*\ *$ ]] && {
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printf '%s %s\n' "${c_r}ERROR:$c_c" "${c_w}No notes in $c_m$VNOTES_FOLDER$c_c" >&2
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exit 1
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}
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# Open the single document matching the search term
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open_note 0
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else
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# Display the multiple matching documents (or the full list if no term was passed)
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screen_width=$(tput cols)
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if [[ -n "$screen_width" ]]; then
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maxcolumns=0
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while (( 1 )); do
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(( (( max_docwidth + 8) * maxcolumns) > screen_width )) && {
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(( maxcolumns-- ))
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break
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}
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(( maxcolumns++ ))
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done
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else
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maxcolumns=3
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fi
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# Get the number of values
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upto=${#documents[@]}
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# Calculate the number of digits in $upto
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digits=1
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while (( 1 )); do
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digits_power=$(power 10 $digits)
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(( (upto / digits_power) < 1 )) && break
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(( digits++ ))
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done
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unset digits_power
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# Draw the list
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printf '\n'
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cnt=1
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for (( x=0; x<${#documents[*]}; x++ )); do
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count_display=$(printf "%${digits}s" "$((x+1))")
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count_display="${count_display//\ /0}"
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(( x )) || one_display="$count_display"
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printf "${c_b}[%${digits}s]$c_c$c_u%$(( max_docwidth + 1 ))s$c_c" "$count_display" "${documents[$x]}"
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if (( (cnt + 1) > maxcolumns )); then
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cnt=1
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printf '\n'
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else
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(( cnt++ ))
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printf '%4s' ' '
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(( (x + 1) >= ${#documents[*]} )) && printf '\n'
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fi
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done
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unset cnt
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printf '\n'
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# Initialize the interactive entry line
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tput init
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prompt
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tput sc
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tput rc
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# Save the tty state
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tty_state="$(stty -g)"
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# Trap a function to restore the tty on exit
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trap 'stty "$tty_state"; exit' SIGINT SIGQUIT SIGTERM
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# Begin to capture input
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stty cs8 -icanon -echo min 1 time 1
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stty intr '' susp ''
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# Loop the input loop and a set of input testing commands
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while (( 1 )); do
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# The input loop which accepts 0-9, q/Q/Ctrl-C to quit, Backspace and Enter
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value=''
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while (( 1 )); do
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# Break out of the loop if $value is as long as the largest number to select from
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(( ${#value} >= digits )) && break
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# Wait for and accept input
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keypress=$(getkeycode "$(dd bs=10 count=1 2> /dev/null | od -t o1)")
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case "$keypress" in
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'177'|'010'|'033 133 063 176')
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# Backspace
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[[ -n "$value" ]] && value="${value:0:$((${#value}-1))}"
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;;
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"$alpha_q"|"$alpha_Q") value='-1'; break ;;
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"$key_cr") [[ -n "$value" ]] && break ;;
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'003') value='-1'; break ;; # Ctrl-C
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"$key_0") value="${value}0" ;; # 0
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"$key_1") value="${value}1" ;; # 1
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"$key_2") value="${value}2" ;; # 2
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"$key_3") value="${value}3" ;; # 3
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"$key_4") value="${value}4" ;; # 4
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"$key_5") value="${value}5" ;; # 5
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"$key_6") value="${value}6" ;; # 6
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"$key_7") value="${value}7" ;; # 7
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"$key_8") value="${value}8" ;; # 8
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"$key_9") value="${value}9" ;; # 9
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esac
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# Redraw the input line with an up to date $value
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tput el1
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tput cr
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prompt
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printf '%s' "$value"
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done
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# Remove leading 0s from $value
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value="${value##+(0)}"
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# Quit if input was given to do so
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(( value == -1 )) && {
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printf '\n%s\n' "${c_r}Quitting!$c_c"
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[[ -n "$tty_state" ]] && stty "$tty_state"
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exit
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}
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# Evaluate the numbers and exit if valid, otherwise display an error and start again
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if (( 1 <= value && value <= upto )); then
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printf '\n'
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open_note $(( value - 1 ))
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else
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tput el1
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tput cr
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printf '%s' "$c_h Invalid number: $value $c_c"
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sleep .8
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tput el1
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tput cr
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prompt
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fi
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done
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fi
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# Restore the tty state
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[[ -n "$tty_state" ]] && stty "$tty_state"
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}
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# Check for missing dependencies
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declare -a missing_deps=()
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for dep in "${deps[@]}"; do
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type -P "$dep" >/dev/null \
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|| missing_deps=( "${missing_deps[@]}" "$dep" )
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done
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[[ -n "${missing_deps[*]}" ]] && {
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printf '%s\n' "${c_w}missing dependencies ($(
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for (( x=0; x < ${#missing_deps[@]}; x++ )); do
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printf '%s' "$c_m${missing_deps[$x]}$c_c"
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(( (x + 1) < ${#missing_deps[@]} )) && printf '%s' ', '
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done
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)$c_w)"
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exit 1
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}
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# Create the VNOTES_FOLDER if it doesn't exist
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[[ -d "$VNOTES_FOLDER" ]] || install -d "$VNOTES_FOLDER"
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# Parse for command line arguments
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case $1 in
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-c|--create)
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shift
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create_note "$*"
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;;
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-d|--delete)
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shift
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delete_note "$*"
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;;
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-h|--help)
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help
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;;
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*)
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search_notes "$*"
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esac
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