diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/default.nix | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/lib/default.nix b/lib/default.nix index 0a99f97..0ffdff2 100644 --- a/lib/default.nix +++ b/lib/default.nix @@ -114,6 +114,27 @@ let { in { quote = x: if x == "" then "''" else lib.stringAsChars quoteChar x; + # Shell code defining the function url_path, which prints the path $1 + # as it goes into a URL: with every byte percent-encoded that isn't a + # letter, a digit, or one of -._~/. Nix decodes that, and otherwise + # takes, e.g., ? and # for delimiters, and refuses blanks. + urlPath = /* sh */ '' + url_path() { + printf %s "$1" | od -An -v -tx1 | tr -s ' ' '\n' | + while read -r url_byte; do + case $url_byte in + "") ;; + 2[d-f]|3[0-9]|4[1-9a-f]|5[0-9a]|5f|6[1-9a-f]|7[0-9a]|7e) + printf "\\$(printf %o "0x$url_byte")" + ;; + *) + printf '%%%s' "$url_byte" + ;; + esac + done + } + ''; + # Shell code that enables flakes for the Nix commands following it, and # fails unless Nix supports them, i.e. is version 2.4 or later. `what` # names what needs flakes, for the error message. |