90 lines
1.7 KiB
Bash
90 lines
1.7 KiB
Bash
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#!/bin/bash
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#
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# Find out the posts that have been modified and record
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# its lastmod information to file '_data/updates.yml'
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#
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# Usage:
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# Call from the '_posts' sibling directory.
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#
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# v2.2
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# https://github.com/cotes2020/jekyll-theme-chirpy
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# © 2020 Cotes Chung
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# Published under MIT License
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set -eu
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POST_DIR=_posts
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OUTPUT_DIR=_data
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OUTPUT_FILE=updates.yml
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_init() {
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if [[ ! -d "$OUTPUT_DIR" ]]; then
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mkdir "$OUTPUT_DIR"
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fi
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if [[ -f "$OUTPUT_DIR/$OUTPUT_FILE" ]]; then
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rm -f "$OUTPUT_DIR/$OUTPUT_FILE"
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fi
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touch "$OUTPUT_DIR/$OUTPUT_FILE"
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}
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_has_changed() {
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local _log_count=`git log --pretty=%ad $1 | wc -l | sed 's/ *//'`
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_log_count=$(($_log_count + 0))
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if [[ $_log_count > 1 ]]; then
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return 0 # true
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fi
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return 1 # false
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}
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###################################
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# Storage the posts' lastmod.
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#
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# Args:
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# - $1 the post's filename
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# - $2 the post's filepath
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# Output:
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# the file '_data/updates.yml'
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###################################
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_dump() {
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local _lasmod="`git log -1 --pretty=%ad --date=iso $2`"
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echo "-" >> "$OUTPUT_DIR/$OUTPUT_FILE"
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echo " filename: '$1'" >> "$OUTPUT_DIR/$OUTPUT_FILE"
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echo " lastmod: '$_lasmod'" >> "$OUTPUT_DIR/$OUTPUT_FILE"
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}
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main() {
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_init
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local _count=0
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for _file in $(ls -r "$POST_DIR")
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do
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_filepath="$POST_DIR/$_file"
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_filename="${_file%.*}" # jekyll cannot read the extension of a file, so omit it.
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_filename=${_filename:11} # remove the date
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if _has_changed "$_filepath"; then
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_dump "$_filename" "$_filepath"
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((_count=_count+1))
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fi
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done
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if [[ $_count > 0 ]]; then
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echo "[INFO] Success to update lastmod for $_count post(s)."
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fi
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}
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main
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