Upgrade server dependencies, manage them with govendor

vendor/github.com/magiconair/properties/load.go

@@ -1,4 +1,4 @@
-// Copyright 2013-2014 Frank Schroeder. All rights reserved.
+// Copyright 2017 Frank Schroeder. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -7,7 +7,9 @@ package properties
 import (
 	"fmt"
 	"io/ioutil"
+	"net/http"
 	"os"
+	"strings"
 )
 
 // Encoding specifies encoding of the input data.
@@ -26,82 +28,197 @@ func Load(buf []byte, enc Encoding) (*Properties, error) {
 	return loadBuf(buf, enc)
 }
 
+// LoadString reads an UTF8 string into a properties struct.
+func LoadString(s string) (*Properties, error) {
+	return loadBuf([]byte(s), UTF8)
+}
+
+// LoadMap creates a new Properties struct from a string map.
+func LoadMap(m map[string]string) *Properties {
+	p := NewProperties()
+	for k, v := range m {
+		p.Set(k, v)
+	}
+	return p
+}
+
 // LoadFile reads a file into a Properties struct.
 func LoadFile(filename string, enc Encoding) (*Properties, error) {
-	return loadFiles([]string{filename}, enc, false)
+	return loadAll([]string{filename}, enc, false)
 }
 
 // LoadFiles reads multiple files in the given order into
 // a Properties struct. If 'ignoreMissing' is true then
 // non-existent files will not be reported as error.
 func LoadFiles(filenames []string, enc Encoding, ignoreMissing bool) (*Properties, error) {
-	return loadFiles(filenames, enc, ignoreMissing)
+	return loadAll(filenames, enc, ignoreMissing)
+}
+
+// LoadURL reads the content of the URL into a Properties struct.
+//
+// The encoding is determined via the Content-Type header which
+// should be set to 'text/plain'. If the 'charset' parameter is
+// missing, 'iso-8859-1' or 'latin1' the encoding is set to
+// ISO-8859-1. If the 'charset' parameter is set to 'utf-8' the
+// encoding is set to UTF-8. A missing content type header is
+// interpreted as 'text/plain; charset=utf-8'.
+func LoadURL(url string) (*Properties, error) {
+	return loadAll([]string{url}, UTF8, false)
+}
+
+// LoadURLs reads the content of multiple URLs in the given order into a
+// Properties struct. If 'ignoreMissing' is true then a 404 status code will
+// not be reported as error. See LoadURL for the Content-Type header
+// and the encoding.
+func LoadURLs(urls []string, ignoreMissing bool) (*Properties, error) {
+	return loadAll(urls, UTF8, ignoreMissing)
+}
+
+// LoadAll reads the content of multiple URLs or files in the given order into a
+// Properties struct. If 'ignoreMissing' is true then a 404 status code or missing file will
+// not be reported as error. Encoding sets the encoding for files. For the URLs please see
+// LoadURL for the Content-Type header and the encoding.
+func LoadAll(names []string, enc Encoding, ignoreMissing bool) (*Properties, error) {
+	return loadAll(names, enc, ignoreMissing)
+}
+
+// MustLoadString reads an UTF8 string into a Properties struct and
+// panics on error.
+func MustLoadString(s string) *Properties {
+	return must(LoadString(s))
 }
 
 // MustLoadFile reads a file into a Properties struct and
 // panics on error.
 func MustLoadFile(filename string, enc Encoding) *Properties {
-	return mustLoadFiles([]string{filename}, enc, false)
+	return must(LoadFile(filename, enc))
 }
 
 // MustLoadFiles reads multiple files in the given order into
 // a Properties struct and panics on error. If 'ignoreMissing'
 // is true then non-existent files will not be reported as error.
 func MustLoadFiles(filenames []string, enc Encoding, ignoreMissing bool) *Properties {
-	return mustLoadFiles(filenames, enc, ignoreMissing)
+	return must(LoadFiles(filenames, enc, ignoreMissing))
 }
 
-// ----------------------------------------------------------------------------
+// MustLoadURL reads the content of a URL into a Properties struct and
+// panics on error.
+func MustLoadURL(url string) *Properties {
+	return must(LoadURL(url))
+}
+
+// MustLoadURLs reads the content of multiple URLs in the given order into a
+// Properties struct and panics on error. If 'ignoreMissing' is true then a 404
+// status code will not be reported as error.
+func MustLoadURLs(urls []string, ignoreMissing bool) *Properties {
+	return must(LoadURLs(urls, ignoreMissing))
+}
+
+// MustLoadAll reads the content of multiple URLs or files in the given order into a
+// Properties struct. If 'ignoreMissing' is true then a 404 status code or missing file will
+// not be reported as error. Encoding sets the encoding for files. For the URLs please see
+// LoadURL for the Content-Type header and the encoding. It panics on error.
+func MustLoadAll(names []string, enc Encoding, ignoreMissing bool) *Properties {
+	return must(LoadAll(names, enc, ignoreMissing))
+}
 
 func loadBuf(buf []byte, enc Encoding) (*Properties, error) {
 	p, err := parse(convert(buf, enc))
 	if err != nil {
 		return nil, err
 	}
-
 	return p, p.check()
 }
 
-func loadFiles(filenames []string, enc Encoding, ignoreMissing bool) (*Properties, error) {
-	buff := make([]byte, 0, 4096)
-
-	for _, filename := range filenames {
-		f, err := expandFilename(filename)
+func loadAll(names []string, enc Encoding, ignoreMissing bool) (*Properties, error) {
+	result := NewProperties()
+	for _, name := range names {
+		n, err := expandName(name)
 		if err != nil {
 			return nil, err
 		}
-
-		buf, err := ioutil.ReadFile(f)
+		var p *Properties
+		if strings.HasPrefix(n, "http://") || strings.HasPrefix(n, "https://") {
+			p, err = loadURL(n, ignoreMissing)
+		} else {
+			p, err = loadFile(n, enc, ignoreMissing)
+		}
 		if err != nil {
-			if ignoreMissing && os.IsNotExist(err) {
-				// TODO(frank): should we log that we are skipping the file?
-				continue
-			}
 			return nil, err
 		}
+		result.Merge(p)
 
-		// concatenate the buffers and add a new line in case
-		// the previous file didn't end with a new line
-		buff = append(append(buff, buf...), '\n')
 	}
-
-	return loadBuf(buff, enc)
+	return result, result.check()
 }
 
-func mustLoadFiles(filenames []string, enc Encoding, ignoreMissing bool) *Properties {
-	p, err := loadFiles(filenames, enc, ignoreMissing)
+func loadFile(filename string, enc Encoding, ignoreMissing bool) (*Properties, error) {
+	data, err := ioutil.ReadFile(filename)
+	if err != nil {
+		if ignoreMissing && os.IsNotExist(err) {
+			LogPrintf("properties: %s not found. skipping", filename)
+			return NewProperties(), nil
+		}
+		return nil, err
+	}
+	p, err := parse(convert(data, enc))
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
+}
+
+func loadURL(url string, ignoreMissing bool) (*Properties, error) {
+	resp, err := http.Get(url)
+	if err != nil {
+		return nil, fmt.Errorf("properties: error fetching %q. %s", url, err)
+	}
+	if resp.StatusCode == 404 && ignoreMissing {
+		LogPrintf("properties: %s returned %d. skipping", url, resp.StatusCode)
+		return NewProperties(), nil
+	}
+	if resp.StatusCode != 200 {
+		return nil, fmt.Errorf("properties: %s returned %d", url, resp.StatusCode)
+	}
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("properties: %s error reading response. %s", url, err)
+	}
+	if err = resp.Body.Close(); err != nil {
+		return nil, fmt.Errorf("properties: %s error reading response. %s", url, err)
+	}
+
+	ct := resp.Header.Get("Content-Type")
+	var enc Encoding
+	switch strings.ToLower(ct) {
+	case "text/plain", "text/plain; charset=iso-8859-1", "text/plain; charset=latin1":
+		enc = ISO_8859_1
+	case "", "text/plain; charset=utf-8":
+		enc = UTF8
+	default:
+		return nil, fmt.Errorf("properties: invalid content type %s", ct)
+	}
+
+	p, err := parse(convert(body, enc))
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
+}
+
+func must(p *Properties, err error) *Properties {
 	if err != nil {
 		ErrorHandler(err)
 	}
 	return p
 }
 
-// expandFilename expands ${ENV_VAR} expressions in a filename.
+// expandName expands ${ENV_VAR} expressions in a name.
 // If the environment variable does not exist then it will be replaced
 // with an empty string. Malformed expressions like "${ENV_VAR" will
 // be reported as error.
-func expandFilename(filename string) (string, error) {
-	return expand(filename, make(map[string]bool), "${", "}", make(map[string]string))
+func expandName(name string) (string, error) {
+	return expand(name, make(map[string]bool), "${", "}", make(map[string]string))
 }
 
 // Interprets a byte buffer either as an ISO-8859-1 or UTF-8 encoded string.