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///usr/bin/env go run "$0" "$@"; exit $!
/******************************************************************************
*
* Copyright 2018 Stefan Majewsky <majewsky@gmx.net>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
package main
import (
"encoding/json"
"fmt"
"html/template"
"io/ioutil"
"os"
"strings"
)
func main() {
input, err := ioutil.ReadAll(os.Stdin)
failIfError(err)
sections := strings.SplitN(string(input), "\n---\n", 2)
if len(sections) != 2 {
fail("missing separator between data and template")
}
dataStr, templateStr := sections[0], sections[1]
data := make(map[string]interface{})
failIfError(json.Unmarshal([]byte(dataStr), &data))
tmpl, err := template.New("tmpl").Parse(templateStr)
failIfError(err)
failIfError(tmpl.Execute(os.Stdout, data))
}
func failIfError(err error) {
if err != nil {
fail(err.Error())
}
}
func fail(msg string, args ...interface{}) {
if len(args) > 0 {
msg = fmt.Sprintf(msg, args...)
}
fmt.Fprintln(os.Stderr, msg)
os.Exit(1)
}
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