contributing: Support more languages

contributing/contributing.go

@@ -24,8 +24,6 @@ import (
 )
 
 const (
-	languageGo string = "Go"
-
 	// startText is the text at the start.
 	startText = `# How to contribute
 
@@ -112,17 +110,11 @@ func getCodingStyle() (string, error) {
 	if err != nil {
 		return "", err
 	}
-	log.Printf("Generating CONTRIBUTING for %s project.\n", *remoteRepo.Language)
-	switch *remoteRepo.Language {
-	case languageGo:
-		return `## Coding Style
-
-The coding style suggested by the Golang community is used in TiDB. See the 
-[style doc](https://github.com/golang/go/wiki/CodeReviewComments) for details.
-
-`, nil
-	default:
-		log.Printf("%s is not supported now to generate coding style guide.", *remoteRepo.Language)
-		return "", nil
+
+	chooser := NewCodingStyleChooser()
+	text, err := chooser.GetCodingStyle(*remoteRepo.Language)
+	if err != nil {
+		return "", err
 	}
+	return text, nil
 }

contributing/style.go

@@ -0,0 +1,148 @@
+// Copyright © 2017 Maintainer Authors
+//
+// 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 contributing
+
+import (
+	"fmt"
+	"log"
+)
+
+const (
+	languageGo         string = "Go"
+	languageJava       string = "Java"
+	languageJavaScript string = "JavaScript"
+	languageScala      string = "Scala"
+	languageShell      string = "Shell"
+	languageCpp        string = "C++"
+	languagePython     string = "Python"
+	languagePHP        string = "PHP"
+	languageRuby       string = "Ruby"
+	languageSwift      string = "Swift"
+	languageR          string = "R"
+)
+
+// CodingStyleChooser is the chooser for coding style.
+type CodingStyleChooser struct{}
+
+// NewCodingStyleChooser creates a new CodingStyleChooser.
+func NewCodingStyleChooser() *CodingStyleChooser {
+	return &CodingStyleChooser{}
+}
+
+// GetCodingStyle gets the code style text according to language.
+func (c *CodingStyleChooser) GetCodingStyle(language string) (string, error) {
+	switch language {
+	case languageGo:
+		return c.getGoCodingStyle(), nil
+	case languageJava:
+		return c.getJavaCodingStyle(), nil
+	case languageJavaScript:
+		return c.getJavaScriptCodingStyle(), nil
+	case languageScala:
+		return c.getScalaCodingStyle(), nil
+	case languageShell:
+		return c.getShellCodingStyle(), nil
+	case languageCpp:
+		return c.getCppCodingStyle(), nil
+	case languagePython:
+		return c.getPythonCodingStyle(), nil
+	case languagePHP:
+		return c.getPHPCodingStyle(), nil
+	case languageRuby:
+		return c.getRubyCodingStyle(), nil
+	case languageSwift:
+		return c.getSwiftCodingStyle(), nil
+	case languageR:
+		return c.getRCodingStyle(), nil
+	default:
+		log.Printf("%s is not supported now to generate coding style guide.", language)
+		return "", nil
+	}
+}
+
+func (c *CodingStyleChooser) getCodingStyleTemplate() string {
+	return `## Coding Style
+
+See the [%s](%s) for details.
+
+`
+}
+
+func (c *CodingStyleChooser) getJavaCodingStyle() string {
+	return `## Coding Style
+
+The coding style in google is used in this repository. See the 
+[Java style doc](https: //google.github.io/styleguide/javaguide.html) for details.
+
+`
+}
+
+func (c *CodingStyleChooser) getGoCodingStyle() string {
+	return `## Coding Style
+
+The coding style suggested by the Golang community is used in this repository. See the 
+[style doc](https://github.com/golang/go/wiki/CodeReviewComments) for details.
+
+`
+}
+
+func (c *CodingStyleChooser) getJavaScriptCodingStyle() string {
+	return `## Coding Style
+
+The coding style suggested by the Golang community is used in this repository. See the 
+[style doc](https://github.com/golang/go/wiki/CodeReviewComments) for details.
+
+`
+}
+
+func (c *CodingStyleChooser) getScalaCodingStyle() string {
+	return fmt.Sprintf(c.getCodingStyleTemplate(), "Scala style doc",
+		"http://docs.scala-lang.org/style/")
+}
+
+func (c *CodingStyleChooser) getCppCodingStyle() string {
+	return fmt.Sprintf(c.getCodingStyleTemplate(), "C++ style doc",
+		"https://google.github.io/styleguide/cppguide.html")
+}
+
+func (c *CodingStyleChooser) getPythonCodingStyle() string {
+	return fmt.Sprintf(c.getCodingStyleTemplate(), "Python style doc",
+		"https://www.python.org/dev/peps/pep-0008/")
+}
+
+func (c *CodingStyleChooser) getShellCodingStyle() string {
+	return fmt.Sprintf(c.getCodingStyleTemplate(), "Shell style doc",
+		"https://google.github.io/styleguide/shell.xml")
+}
+
+func (c *CodingStyleChooser) getPHPCodingStyle() string {
+	return fmt.Sprintf(c.getCodingStyleTemplate(), "PHP style doc",
+		"http://www.php-fig.org/psr/psr-2/")
+}
+
+func (c *CodingStyleChooser) getRubyCodingStyle() string {
+	return fmt.Sprintf(c.getCodingStyleTemplate(), "Ruby style doc",
+		"https://github.com/bbatsov/ruby-style-guide")
+}
+
+func (c *CodingStyleChooser) getSwiftCodingStyle() string {
+	return fmt.Sprintf(c.getCodingStyleTemplate(), "Swift style doc",
+		"https://github.com/raywenderlich/swift-style-guide")
+}
+
+func (c *CodingStyleChooser) getRCodingStyle() string {
+	return fmt.Sprintf(c.getCodingStyleTemplate(), "R style doc",
+		"https://google.github.io/styleguide/Rguide.xml")
+}