651 lines
16 KiB
Bash
Executable file
651 lines
16 KiB
Bash
Executable file
#!/usr/bin/env bash
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#
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# Distributed under the terms of the BSD License
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#
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# Copyright (c) 2021, Konstantin Nazarov <mail@knazarov.com>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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set -e
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DATE_FORMAT="%a, %d %b %Y %H:%M:%S %z"
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PID=$$
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BASEDIR=~/Maildir/personal/Notes
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CACHE_DIR="${XDG_CACHE_HOME:-$HOME/.cache}/notes.sh"
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EDITOR="${EDITOR:-vim}"
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if [ -n "$NOTES_SH_BASEDIR" ]; then
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BASEDIR="$NOTES_SH_BASEDIR"
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fi
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if [ ! -d "$BASEDIR" ]; then
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mkdir -p "$BASEDIR"/{tmp,new,cur}
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fi
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die() {
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echo "$@" 1>&2;
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exit 1
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}
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uuid()
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{
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local N B T
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for (( N=0; N < 16; ++N ))
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do
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B=$(( RANDOM%255 ))
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if (( N == 6 ))
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then
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printf '4%x' $(( B%15 ))
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elif (( N == 8 ))
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then
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local C='89ab'
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printf '%c%x' ${C:$(( RANDOM%${#C} )):1} $(( B%15 ))
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else
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printf '%02x' $B
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fi
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for T in 3 5 7 9
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do
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if (( T == N ))
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then
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printf '-'
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break
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fi
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done
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done
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echo
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}
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utc_timestamp() {
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date -u +"%Y-%m-%dT%H:%M:%SZ"
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}
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gen_boundary()
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{
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for (( N=0; N < 32; ++N ))
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do
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B=$(( RANDOM%255 ))
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printf '%02x' $B
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done
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echo
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}
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yesno() {
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PROMPT="$1"
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DEFAULT="$2"
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if [[ "$DEFAULT" == "y" ]]; then
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read -p "$PROMPT [Y/n] " -r CHOICE
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if [[ "$CHOICE" =~ ^[Nn]$ ]]; then
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echo "n"
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else
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echo "y"
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fi
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else
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read -p "$PROMPT [y/N] " -r CHOICE
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if [[ "$CHOICE" =~ ^[Yy]$ ]]; then
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echo "y"
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else
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echo "n"
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fi
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fi
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}
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get_headers() {
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HEADERS_FILE="$1"
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FILTER="\
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{ \
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if (\$0~/^$/) {exit} \
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if (\$0!~/^[^ ]*:.*$/) {exit} \
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print \$0 \
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} \
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"
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awk "$FILTER" "$HEADERS_FILE"
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}
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get_body() {
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BODY_FILE="$1"
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FILTER="\
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{ \
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if (body==1) {\
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print \$0;
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}\
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if (\$0~/^$/) {body=1} \
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if (\$0!~/^[^ ]*: .*$/ && body != 1) {\
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body=1;
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print \$0;
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} \
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} \
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"
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awk "$FILTER" "$BODY_FILE"
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}
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get_header() {
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FILE="$1"
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HEADER="$2"
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grep -m1 "^${HEADER}: " < "$FILE" | sed -n "s/^${HEADER}: \(.*\)$/\1/p"
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}
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find_file_by_id() {
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ID="$1"
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{ grep -l -r -m1 "^X-Note-Id: $ID$" "$BASEDIR" || true; } | sort| head -1
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}
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assert_find_file_by_id() {
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FILE="$(find_file_by_id "$1")"
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if [ ! -f "$FILE" ]; then
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die "Note with ID <$ID> not found"
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fi
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echo "$FILE"
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}
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find_files_by_id() {
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ID="$1"
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grep -l -r -m 1 "^X-Note-Id: $ID$" "$BASEDIR" || true
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}
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get_part() {
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FILE="$1"
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BOUNDARY="$2"
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NUM="$3"
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FILTER="\
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BEGIN { \
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rec=0; \
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body=0; \
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} \
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{ \
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if (\$0==\"--$BOUNDARY\" || \$0==\"--$BOUNDARY--\") { \
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if (body == 0) { \
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body=1; \
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} \
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rec=rec+1; \
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} \
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else if (body == 1 && rec==$NUM) { \
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print \$0 \
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} \
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}"
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awk "$FILTER" "$FILE"
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}
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unpack_part() {
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FILE="$1"
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DIR="$2"
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MIME_TYPE=$(get_header "$FILE" Content-Type)
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DISPOSITION=$(get_header "$FILE" Content-Disposition)
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if [[ $DISPOSITION == *"attachment"* ]]; then
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ENCODING=$(get_header "$FILE" Content-Transfer-Encoding)
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FILENAME=$(echo "$DISPOSITION" | \
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sed -n 's/^.*filename="\{0,1\}\([^"]*\)"\{0,1\}$/\1/p')
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FILTER="\
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{ \
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if (body==1) {print \$0}\
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if (\$0~/^$/) {body=1} \
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} \
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"
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if [[ $ENCODING == *"base64"* ]]; then
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awk "$FILTER" "$FILE" | base64 --decode >> "$DIR/$FILENAME"
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else
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awk "$FILTER" "$FILE" >> "$DIR/$FILENAME"
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fi
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elif [[ $MIME_TYPE == *"text/plain"* ]]; then
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FILTER="\
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{ \
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if (body==1) {print \$0}\
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if (\$0~/^$/) {body=1} \
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} \
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"
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awk "$FILTER" "$FILE" >> "$DIR/note.md"
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elif [[ $MIME_TYPE == *"multipart/mixed"* ]]; then
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BOUNDARY=$(echo "$MIME_TYPE" | sed -n 's/^.*boundary="\(.*\)"$/\1/p')
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i=1
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while true; do
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TMP=$(mktemp "$DIR/tmp.XXXXXXXX")
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get_part "$FILE" "$BOUNDARY" "$i" > "$TMP"
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((i++))
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if [ ! -s "$TMP" ]; then
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rm "$TMP"
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break
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fi
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#cat "$TMP"
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(unpack_part "$TMP" "$DIR")
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rm "$TMP"
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done
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elif [[ $MIME_TYPE == *"multipart/related"* ]]; then
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echo "multipart/related not yet supported"
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exit 1
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fi
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}
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unpack_mime() {
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FILE="$1"
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DIR="$2"
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get_headers "$FILE" | grep -v "^Content-Type\|^Content-Disposition\|^Date\|^MIME-Version" >> "$DIR/note.md"
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echo "" >> "$DIR/note.md"
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TMP=$(mktemp "$DIR/tmp.XXXXXXXX")
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cat "$FILE" > "$TMP"
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(unpack_part "$TMP" "$DIR")
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rm "$TMP"
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}
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pack_part() {
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PART_FILE="$1"
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CONTENT_TYPE="$(file -b --mime-type "$PART_FILE")"
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echo "Content-Disposition: attachment; filename=\"$(basename "$PART_FILE")\""
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if [[ "$CONTENT_TYPE" =~ "text/" ]]; then
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echo "Content-Type: text/plain"
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echo
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cat "$PART_FILE"
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else
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echo "Content-Type: $CONTENT_TYPE"
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echo "Content-Transfer-Encoding: base64"
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echo
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base64 < "$PART_FILE" | fold -w 76
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fi
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}
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pack_mime() {
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DIR="$1"
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FILE="$2"
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FILE_COUNT="$(find "$DIR/" -type f | wc -l | tr -d " ")"
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MIME_TIMESTAMP=$(LC_ALL="en_US.UTF-8" date "+$DATE_FORMAT")
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if [[ "$FILE_COUNT" == "1" ]]; then
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{
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echo "MIME-Version: 1.0"
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echo "Date: $MIME_TIMESTAMP"
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echo "Content-Type: text/plain; charset=utf-8"
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echo "Content-Disposition: inline"
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cat "$DIR/note.md"
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} >> "$FILE"
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return
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fi
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BOUNDARY="$(gen_boundary)"
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{
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echo "MIME-Version: 1.0"
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echo "Date: $MIME_TIMESTAMP"
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echo "Content-Type: multipart/mixed; boundary=\"$BOUNDARY\""
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get_headers "$DIR/note.md"
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echo
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echo "--$BOUNDARY"
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echo "Content-Type: text/plain; charset=utf-8"
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echo "Content-Disposition: inline"
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echo
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get_body "$DIR/note.md"
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} >> "$FILE"
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find "$DIR/" -type f ! -name 'note.md' | while read -r FN
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do
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{
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echo "--$BOUNDARY"
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pack_part "$FN"
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} >> "$FILE"
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done
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echo "--$BOUNDARY--" >> "$FILE"
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}
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input_note() {
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INP="$1"
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OUTP="$2"
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DIR="$(mktemp -d)"
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ENTRY_FILE="$DIR/note.md"
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MIME_TIMESTAMP=$(LC_ALL="en_US.UTF-8" date "+$DATE_FORMAT")
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UTC_TIMESTAMP=$(utc_timestamp)
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if [ -n "$INP" ] && [ ! -f "$INP" ] && [ ! -d "$INP" ]; then
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die "File or directory doesn't exist: $INP"
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fi
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if [ -f "$INP" ]; then
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{
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get_headers "$INP"
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echo ""
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get_body "$INP"
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} >> "$DIR/note.md"
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elif [ -d "$INP" ]; then
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if [ ! -f "$INP/note.md" ]; then
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die "File doesn't exist: $INP/note.md"
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fi
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cp -n "$INP"/* "$DIR/" || true
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elif [ -t 0 ]; then
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cat > "$ENTRY_FILE" <<- EOF
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X-Date: $UTC_TIMESTAMP
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X-Note-Id: $(uuid)
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Subject:
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EOF
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OLD_DIR="$(pwd)"
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cd "$DIR"
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$EDITOR "$ENTRY_FILE"
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cd "$OLD_DIR"
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else
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while read -r line ; do
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echo "$line" >> "$ENTRY_FILE"
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done
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fi
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MERGED_ENTRY_FILE="$(mktemp)"
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HEADERS=$(get_headers "$ENTRY_FILE")
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{
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echo "$HEADERS" | grep -q "^X-Date:" || echo "X-Date: $UTC_TIMESTAMP"
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echo "$HEADERS" | grep -q "^X-Note-Id:" || echo "X-Note-Id: $(uuid)"
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echo "$HEADERS"
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echo "$HEADERS" | grep -q "^Subject:" || echo "Subject: "
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echo ""
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get_body "$ENTRY_FILE"
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} > "$MERGED_ENTRY_FILE"
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mv "$MERGED_ENTRY_FILE" "$ENTRY_FILE"
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pack_mime "$DIR" "$OUTP"
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rm -rf "$DIR"
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}
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remove_notes_by_id() {
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ID="$1"
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find_files_by_id "$ID" | while read -r FN
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do
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rm "$FN"
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done
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}
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notes_equal() {
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NOTE1="$1"
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NOTE2="$2"
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MIME_TYPE1=$(get_header "$NOTE1" Content-Type)
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MIME_TYPE2=$(get_header "$NOTE2" Content-Type)
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BOUNDARY1=$(echo "$MIME_TYPE1" | sed -n 's/^.*boundary="\(.*\)"$/\1/p')
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BOUNDARY2=$(echo "$MIME_TYPE2" | sed -n 's/^.*boundary="\(.*\)"$/\1/p')
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FILTER1="^Date:"
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FILTER2="^Date:"
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if [ -n "$BOUNDARY1" ]; then
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FILTER1="^Date:\|$BOUNDARY1"
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fi
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if [ -n "$BOUNDARY2" ]; then
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FILTER2="^Date:\|$BOUNDARY2"
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fi
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NOTE1_S="$(mktemp)"
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grep -v "$FILTER1" "$NOTE1" > "$NOTE1_S"
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if grep -v "$FILTER2" "$NOTE2" | cmp -s "$NOTE1_S"; then
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rm "$NOTE1_S"
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return 0
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else
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rm "$NOTE1_S"
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return 1
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fi
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}
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new_entry() {
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OUTP="$(mktemp)"
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input_note "$1" "$OUTP"
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if [ ! -s "$OUTP" ]; then
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rm "$OUTP"
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return
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fi
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NOTE_ID="$(get_header "$OUTP" X-Note-Id)"
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OLD_NOTE="$(find_file_by_id "$NOTE_ID")"
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if [ -n "$OLD_NOTE" ] && notes_equal "$OLD_NOTE" "$OUTP"; then
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return
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fi
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remove_notes_by_id "$NOTE_ID"
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UNIX_TIMESTAMP=$(date "+%s")
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HOSTNAME=$(hostname -s)
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FILENAME="$UNIX_TIMESTAMP.${PID}_1.${HOSTNAME}:2,S"
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mv "$OUTP" "$BASEDIR/cur/$FILENAME"
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}
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edit_entry() {
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ID="$1"
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FILENAME="$(assert_find_file_by_id "$ID")"
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DIR="$CACHE_DIR/$ID"
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if [ -d "$DIR" ] && [ -f "$DIR/note.md" ]; then
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RESUME_EDITING=$(yesno "Unsaved changes found for this note. Resume editing?" y)
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fi
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if [ "$RESUME_EDITING" != "y" ]; then
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rm -rf "$DIR"
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mkdir -p "$DIR"
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unpack_mime "$FILENAME" "$DIR"
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fi
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OLD_DIR="$(pwd)"
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cd "$DIR"
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if ! $EDITOR "$DIR/note.md"; then
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die "Editor returned non-zero exit code. Leaving the note untouched."
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fi
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cd "$OLD_DIR"
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UNIX_TIMESTAMP=$(date "+%s")
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HOSTNAME=$(hostname -s)
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RESULT=$(mktemp)
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pack_mime "$DIR" "$RESULT"
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if ! notes_equal "$RESULT" "$FILENAME"; then
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DEST_FILENAME="$UNIX_TIMESTAMP.${PID}_1.${HOSTNAME}:2,S"
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mv "$RESULT" "$BASEDIR/cur/$DEST_FILENAME"
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rm "$FILENAME"
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fi
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rm -rf "$DIR"
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}
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list_entries() {
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FILTER="\
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BEGIN { \
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message_id=0; \
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subject=0; \
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date=0; \
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} \
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match(\$0, /^X-Note-Id: .*$/) { \
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if (message_id != 0) { \
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if (subject !=0 && date != 0)\
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print date, message_id, subject; \
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subject = 0; \
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date = 0; \
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};\
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message_id = substr(\$0, 12, RLENGTH-11); \
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} \
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match(\$0, /^Subject: .*$/) { \
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if (subject != 0) { \
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if (message_id != 0 && date != 0)\
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print date, message_id, subject; \
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message_id = 0; \
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date = 0; \
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}; \
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subject = substr(\$0, 10, RLENGTH-9); \
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} \
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match(\$0, /^X-Date: .*$/) { \
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if (date != 0) { \
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if (message_id != 0 && subject != 0)\
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print date, message_id, subject; \
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subject = 0; \
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message_id = 0; \
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}; \
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date = substr(\$0, 9, RLENGTH-8); \
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} \
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END { \
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if (message_id != 0 && subject != 0 && date != 0)\
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print date, message_id, subject;\
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}\
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"
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grep -r -h "^Subject:\|^X-Note-Id:\|^X-Date:" "$BASEDIR" | awk "$FILTER" | sort | cut -d " " -f "2-"
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}
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export_note() {
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ID="$1"
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FILENAME="$(assert_find_file_by_id "$ID")"
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DIR="$2"
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if [ -z "$DIR" ]; then
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DIR="$(mktemp -d)"
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unpack_mime "$FILENAME" "$DIR"
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cat "$DIR/note.md"
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rm -rf "$DIR"
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else
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unpack_mime "$FILENAME" "$DIR"
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fi
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}
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get_raw_graph() {
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UUID_RE="[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
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FILTER="\
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BEGIN { \
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message_id=0; \
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subject=0; \
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} \
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match(\$0, /^X-Note-Id: .*$/) { \
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if (message_id != 0) { \
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if (subject !=0)\
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print \"node\", message_id, subject; \
|
|
subject = 0 \
|
|
};\
|
|
message_id = substr(\$0, 12, RLENGTH-11) \
|
|
} \
|
|
match(\$0, /^Subject: .*$/) { \
|
|
if (subject != 0) { \
|
|
if (message_id != 0)\
|
|
print \"node\", message_id, subject; \
|
|
message_id = 0 \
|
|
}; \
|
|
subject = substr(\$0, 10, RLENGTH-9) \
|
|
} \
|
|
match(\$0, /^note:\/\/.*$/) { \
|
|
link_to = substr(\$0, 8, RLENGTH-7); \
|
|
if (subject != 0 && message_id != 0) { \
|
|
print \"link\", message_id, link_to; \
|
|
}; \
|
|
} \
|
|
END { \
|
|
if (message_id != 0 && subject != 0)\
|
|
print \"node\", message_id, subject;\
|
|
}\
|
|
"
|
|
grep -E -i -o -r -h "^X-Note-Id: $UUID_RE|^Subject.*$|note://$UUID_RE" \
|
|
"$BASEDIR"/cur | awk "$FILTER"
|
|
}
|
|
|
|
get_graph() {
|
|
UUIDLEN=36
|
|
FILTER="\
|
|
BEGIN { \
|
|
print \"graph notes {\" \
|
|
} \
|
|
{\
|
|
if (\$1 == \"node\") {\
|
|
printf \" \\\"%s\\\" \", \$2;\
|
|
printf \"[label=\\\"%s\\\"]\", substr(\$0, $UUIDLEN + 7, length(\$0) - $UUIDLEN - 5);\
|
|
printf \";\\n\";\
|
|
}\
|
|
if (\$1 == \"link\") {\
|
|
printf \" \\\"%s\\\" -- \\\"%s\\\";\\n\", \$2, \$3;\
|
|
}\
|
|
}\
|
|
END { \
|
|
print \"}\" \
|
|
} \
|
|
"
|
|
get_raw_graph | sort -r | sed 's/"/\\"/g' | awk "$FILTER"
|
|
}
|
|
|
|
usage() {
|
|
echo "$0 {--new,--list,--edit,--export,--graph,--help}"
|
|
}
|
|
|
|
while (( "$#" )); do
|
|
case "$1" in
|
|
-n|--new)
|
|
new_entry "$2"
|
|
exit 0
|
|
;;
|
|
-l|--list)
|
|
list_entries
|
|
exit 0
|
|
;;
|
|
-e|--edit)
|
|
if [ -z "$2" ]; then
|
|
echo "Misssing argument for $1"
|
|
exit 1
|
|
fi
|
|
edit_entry "$2"
|
|
exit 0
|
|
;;
|
|
-E|--export)
|
|
if [ -z "$2" ]; then
|
|
echo "Misssing arguments for $1"
|
|
exit 1
|
|
fi
|
|
export_note "$2" "$3"
|
|
exit 0
|
|
;;
|
|
-g|--graph)
|
|
get_graph
|
|
exit 0
|
|
;;
|
|
*)
|
|
usage
|
|
exit 1
|
|
;;
|
|
esac
|
|
|
|
done
|
|
|
|
usage
|
|
exit 1
|