66 lines
2.5 KiB
Bash
66 lines
2.5 KiB
Bash
#!/usr/bin/env bash
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##################################################################################################
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# linkifyurls.sh #
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# 01/24/2022 #
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# Written By David Holdeman #
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# Searches for URLs in a Github Wiki repo, and turns them into markdown links. #
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##################################################################################################
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# These two functions are used to escape variables for use in a sed command
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# Passed a single string
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escape() {
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sed 's/[^^]/[&]/g; s/\^/\\^/g' <<<"$1";
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}
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export -f escape
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escapeReplace() {
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sed 's/[&/\]/\\&/g' <<<"$1";
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}
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export -f escapeReplace
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# Main processing function
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# Passed the path to a .md file
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searchfile() {
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# This loops for every link in the file.
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# See the end of the function for the grep that finds the links in the file.
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# We use file descriptor 3, because if we used stdin, the read calls inside this loop would read from that instead of
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# reading the user's input.
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while IFS= read -r -u 3 link; do
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# Get the line the link was in
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LINE=$(grep "$link" "$1")
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# If the line is different than the link, print it so the user can see the context of the link.
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if [ "$LINE" != "$link" ]; then
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echo "$LINE"
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fi
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# Print the link and prompt for a title
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echo $link
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read -p "Enter a title or leave empty or [n:skip|e:edit]: " TITLE
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# Do nothing if the user entered 'n'
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if [ "$TITLE" == "n" ]; then
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echo
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continue
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fi
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# Open the file in an editor if the user entered 'e'
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if [ "$TITLE" == "e" ]; then
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$EDITOR "$1"
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echo
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continue
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fi
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# Set the title to the URL if the user didn't enter anything
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if [ $(echo -n "$TITLE" | wc -c) -lt 1 ]; then
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TITLE="$link"
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fi
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# Build a markdown-style link
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REPLACE=$(escape "$link")
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REPLACEWITH=$(escapeReplace '['"$TITLE"']''('"$link"')')
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# Replace the old URL with the new link in the file
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sed -i "s/$REPLACE/$REPLACEWITH/" "$1"
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echo
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# This regex finds URLs in the file that is passed to searchfile
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# Results are fed to file descriptor 3 for the reasons previously explained.
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done 3< <(grep -oP '((?<![\(\[])http[s]?:\/\/[^\s]*)' "$1")
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}
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export -f searchfile
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# run searchfile on every .md file in the repo
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find . -iname "*.md" -exec bash -c 'searchfile "$0"' {} \;
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