init

license.txt

@@ -0,0 +1,27 @@
+Copyright (c) 2016, stephen mcquay
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+    * Neither the name of allowances nor the names of its contributors
+      may be used to endorse or promote products derived from this software
+      without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

main.go

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+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/dustin/go-humanize"
+)
+
+const usage = "lim <number of bytes, default 1MB>"
+
+func main() {
+	size := int64(1 * 1024 * 1024)
+	switch len(os.Args) {
+	case 1:
+	case 2:
+		dest, err := humanize.ParseBytes(os.Args[1])
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "unable to parse quantity: %v\n%v\n", err, usage)
+			os.Exit(1)
+		}
+		size = int64(dest)
+	default:
+		fmt.Fprintf(os.Stderr, "%v\n", usage)
+		os.Exit(1)
+	}
+
+	lr := io.LimitReader(os.Stdin, size)
+	io.Copy(os.Stdout, lr)
+}