Add command line tool to submit and delete files and links.

Fixes #11.

contrib/rushlink

@@ -0,0 +1,85 @@
+#!/usr/bin/env sh
+
+set -e
+
+LINK=https://hashru.link/
+DELFILE="${XDG_DATA_HOME:-$HOME/.local/share}/rushlink/delete"
+
+link() {
+    case "$1" in
+        https://*|http://*)
+            printf '%s' "$1" | curl -sS -F'shorten=<-' "$LINK"
+            ;;
+        *)
+            curl -sS -Ffile=@- "$LINK" < "$1"
+            ;;
+    esac | sed -n '1p;/deleteToken/{s@.*\(https://\)@\1@;p;q}' | (
+        IFS= read -r link
+        IFS= read -r deletelink
+        echo "$link"
+        mkdir -p "$(dirname "$DELFILE")"
+        echo "$deletelink" >> "$DELFILE"
+    )
+}
+
+del() {
+    case "$1" in
+        https://*|http://*)
+            URL="$1"
+            ;;
+        *)
+            URL="$LINK$1"
+            ;;
+    esac
+    if DELURL=$(grep -s -m1 "$URL?deleteToken=" "$DELFILE"); then
+        echo "Deleting $URL..." >&2
+        curl -sS -X DELETE "$DELURL" | grep deleted
+    else
+        echo "Delete token for $URL is not known." >&2
+        exit 1
+    fi
+}
+
+if [ $# -gt 0 ]; then
+    case "$1" in
+        --help|-h)
+            CMD=$(basename "$0")
+            echo "$CMD - Command line tool for $LINK"
+            echo
+            echo "Usage:"
+            echo "    $CMD https://example.com/"
+            echo "        Shorten link."
+            echo "    $CMD file.txt"
+            echo "    $CMD < file.txt"
+            echo "        Upload file."
+            echo "    $CMD"
+            echo "    echo hi | $CMD"
+            echo "        Upload file from standard input."
+            echo "    $CMD (--delete|-d) ${LINK}xd42"
+            echo "    $CMD (--delete|-d) xd42"
+            echo "        Delete file or shortened link."
+            echo
+            echo "Delete tokens are stored in $DELFILE"
+            exit 0
+            ;;
+        --delete|-d)
+            shift
+            for url in "$@"; do
+                del "$url"
+            done
+            exit 0
+            ;;
+        *)
+            for url in "$@"; do
+                link "$url"
+            done
+            exit 0
+    esac
+fi
+
+if [ -t 0 ]; then
+    echo "Sending standard input to $LINK" >&2
+    echo "^C to cancel, ^D to send." >&2
+fi
+
+link /dev/stdin