diff --git a/home/.local/bin/scripts/cheat.sh b/home/.local/bin/scripts/cheat.sh index 23ed006..38bbdf9 100755 --- a/home/.local/bin/scripts/cheat.sh +++ b/home/.local/bin/scripts/cheat.sh @@ -1,47 +1,111 @@ #!/bin/sh -# Select the cheatsheat -SELECTABLE="$(curl -s "cheat.sh/:list")" -if [ -n "$1" ]; then - if echo "$SELECTABLE" | grep -qe "\b$1\b"; then - selected="$1" +# rm_trailing_slashes(string) +# +# Prints a string without any trailing slashes. +# This is used because cheat.sh doesn't play nicely with multiple slashes in +# URLs. +rm_trailing_slashes() { + string="$1" + last_char="$(printf "$string" | tail -c 1)" + if [ "$last_char" = "/" ]; then + echo "$(rm_trailing_slashes "${string%?}")" else - echo "Invalid selection. For all selections, query cheat.sh/:list" - exit 1 + echo "$string" fi -else - selected=$(printf "$SELECTABLE" | fzf) - if [ $? -ne 0 ]; then - echo "Invalid selection: '$selected'" - exit 1 +} + +# pick_category(must_match, query, argument, recurse) +# +# Pick cheat.sh category. +# if must_match is 1, only allow listed options to be picked. +# if query is specified, pick sub-category of it, else pick global categories. +# if argument is specified, optionally perform must_match check and print it. +# if recurse is 1, if the selected option ends with /, run the function again. +# +# Prints the chosen category +pick_category() { + must_match="$1" + query="$(rm_trailing_slashes "$2")" + argument="$3" + recurse="$4" + + # Query all possible options + if [ -n "$query" ]; then + url="cheat.sh/$query/:list" + else + url="cheat.sh/:list" fi - selected=$(printf "$selected" | tail -1) + selectable="$(curl -s "$url")" + + # If argument is specified, print it, optionally perform must_match check. + if [ -n "$argument" ]; then + if [ "$must_match" -ne 1 ] || echo "$selectable" | grep -qe "\b$1\b"; then + selected="$argument" + else + echo "Invalid selection: '$argument'" + echo "For all selections, query $url" + exit 1 + fi + # Select the option with fzf, optionally allow other matches if must_match isn't set. + else + if [ "$must_match" -ne 1 ]; then + if [ -z "$selectable" ]; then + header="No selections found, you can use empty query to show category help, or type a custom query." + else + header="Use alt-enter to enter non-listed query. You can use empty queries to show category help." + fi + selected="$(printf "\n$selectable" | \ + fzf --bind=alt-enter:print-query \ + --print-query \ + --prompt="cheat.sh/$query query>" \ + --header="$header"\ + )" + else + selected=$(printf "$selectable" | fzf --prompt="cheat.sh/$query category>") + if [ $? -ne 0 ]; then + echo "Invalid selection: '$selected'" + echo "For all selections, query $url" + exit 1 + fi + fi + selected=$(printf "$selected" | tail -1) + fi + + + # Replace spaces with '+' (cheat.sh resolves those as spaces) + selected="$(echo "$selected" | tr ' ' '+')" + + # Prepend the original query, if we have one + # Print the selected category, or subcategory with the category + if [ -n "$query" ]; then + result="$query/$selected" + else + result="$selected" + fi + + # Recurse, if specified and the result ended with / + if [ "$recurse" -eq 1 ]; then + if [ "$(printf "$selected" | tail -c 1)" = "/" ]; then + result="$(pick_category "$must_match" "$result" "$argument" 1)" + fi + fi + + # Print the result + printf "$result" +} + +# Select the cheatsheat category (language/core-util/...) +query=$(pick_category 1 "" "$1" 0) + +# If the query isn't already complete, select a sub-category +if ! echo "$query" | grep -qe ":"; then + query="$(pick_category 0 "$query" "$2" 1)" fi -# If the cheatsheet doesn't already include a query, select a query -if echo "$selected" | grep -qe "[/:]"; then - query="" -elif [ -n "$2" ]; then - query="$2" -else - options=$(curl -s "cheat.sh/$selected/:list") - query="$(printf "\n$options" | \ - fzf --bind=alt-enter:print-query \ - --print-query \ - --prompt="cheat.sh query>" \ - --header="Use alt-enter to enter non-listed query. Empty queries are allowed."\ - )" - query=$(echo "$query" | tail -1) -fi -query="$(echo "$query" | tr ' ' '+')" - -# cheat.sh doesn't play nicely with trailing / in URLs -if [ -n "$query" ]; then - url="cheat.sh/$selected/$query" -else - url="cheat.sh/$selected" -fi - -# Print the URL and make the request +# Construct the URL from given query and print it +url="cheat.sh/$query" echo "$url" + +# Show the output of cheat.sh request curl -s "$url"