88 lines
1.6 KiB
Nix
88 lines
1.6 KiB
Nix
{
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writeShellScriptBin,
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imv,
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curl,
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imagemagick,
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}:
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writeShellScriptBin "whst" ''
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print_help () {
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cat << EOF
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Usage: whst <status_code> [options]
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Check the meaning or details of a given HTTP status code.
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Arguments:
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status_code Integer HTTP status code to look up (e.g., 200, 404).
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Options:
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-h Show this help message and exit.
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Examples:
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whst 200
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whst 404 -h
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EOF
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}
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OPTSTRING="h"
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while getopts "$OPTSTRING" opt; do
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case "$opt" in
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h)
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print_help
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exit 0
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;;
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?)
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echo "Invalid option: -$OPTARG." >&2
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exit 1
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;;
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esac
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done
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shift $((OPTIND - 1))
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if (( $# < 1 )); then
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echo "Error: Missing required status_code argument." >&2
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echo "Use -h for help." >&2
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exit 1
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fi
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status_code="$1"
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if ! [[ "$status_code" =~ ^[0-9]+$ ]]; then
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echo "Error: status_code must be an integer." >&2
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exit 1
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fi
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url="https://http.cat/$status_code"
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tmpfile="$(mktemp --suffix=.jpg)"
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if ! ${curl}/bin/curl -fsSL "$url" -o "$tmpfile"; then
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echo "Error: The status code $status_code is non existemnt :(" >&2
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rm -f "$tmpfile"
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exit 1
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fi
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dims="$(${imagemagick}/bin/identify -format '%w %h' "$tmpfile" 2>/dev/null)"
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if [ -z "$dims" ]; then
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echo "Error: Failed to determine image size." >&2
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rm -f "$tmpfile"
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exit 1
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fi
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# Split into width and height using shell
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set -- $dims
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width="$1"
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height="$2"
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if ! ${imv}/bin/imv -W "$width" -H "$height" "$tmpfile"; then
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echo "Error: Failed to display image with imv." >&2
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rm -f "$tmpfile"
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exit 1
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fi
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rm -f "$tmpfile"
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exit 0
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''
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