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plugin.go
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plugin.go
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package main
import (
"fmt"
"os"
"os/exec"
"strings"
"github.com/drone-plugins/drone-hugo/download"
)
type (
Plugin struct {
Config Config
BuildInVersion string
}
Config struct {
URL string
Drafts bool
Expired bool
Future bool
Validate bool
Cache string
Config string
Content string
Layout string
Output string
Source string
Theme string
Version string
Extended bool
}
)
var (
hugoExecutable = "hugo"
)
// Exec executes the plugins functionality
func (p Plugin) Exec() error {
var cmds = make([]*exec.Cmd, 0)
if p.Config.Extended {
hugoExecutable = "hugo-extended"
}
// Check if buildIn plugin version equals
// plugin version declared in drone.yml
if !versionsEqual(p.BuildInVersion, p.Config.Version) {
version := p.Config.Version
if version == "" {
version = p.BuildInVersion
}
executable, err := download.Get(version, p.Config.Extended)
if err != nil {
return err
}
hugoExecutable = executable
}
if p.Config.Validate {
cmds = append(cmds, commandValidate(p.Config))
}
cmds = append(cmds, commandBuild(p.Config))
return execAll(cmds)
}
func commandValidate(config Config) *exec.Cmd {
args := []string{"check"}
if config.Config != "" {
args = append(args, "--config", config.Config)
}
return exec.Command(hugoExecutable, args...)
}
func commandBuild(config Config) *exec.Cmd {
var args = make([]string, 0)
if config.Drafts {
args = append(args, "-D")
}
if config.Expired {
args = append(args, "-E")
}
if config.Future {
args = append(args, "-F")
}
if config.Cache != "" {
args = append(args, "--cacheDir", config.Cache)
}
if config.Config != "" {
args = append(args, "--config", config.Config)
}
if config.Content != "" {
args = append(args, "--contentDir", config.Content)
}
if config.Layout != "" {
args = append(args, "--layoutDir", config.Layout)
}
if config.Output != "" {
args = append(args, "--destination", config.Output)
}
if config.Source != "" {
args = append(args, "--source", config.Source)
}
if config.Theme != "" {
args = append(args, "--theme", config.Theme)
}
if config.URL != "" {
args = append(args, "--baseURL", config.URL)
}
return exec.Command(hugoExecutable, args...)
}
// execAll executes a slice of commands as a batch job
func execAll(cmds []*exec.Cmd) error {
for _, cmd := range cmds {
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
trace(cmd)
if err := cmd.Run(); err != nil {
return err
}
}
return nil
}
func versionsEqual(version string, toCompare string) bool {
if toCompare == version || toCompare == "" {
return true
}
return false
}
// trace writes each command to stdout with the command wrapped in an xml
// tag so that it can be extracted and displayed in the logs.
func trace(cmd *exec.Cmd) {
fmt.Fprintf(os.Stdout, "+ %s\n", strings.Join(cmd.Args, " "))
}