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// Copyright © 2013 Steve Francia <spf@spf13.com>.
//
// Licensed under the Simple Public 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://opensource.org/licenses/Simple-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 hugolib
import (
"encoding/json"
"fmt"
"github.com/BurntSushi/toml"
"io/ioutil"
"launchpad.net/goyaml"
"os"
"path"
"path/filepath"
"strings"
)
// config file items
type Config struct {
ContentDir, PublishDir, BaseUrl, StaticDir string
Path, CacheDir, LayoutDir, DefaultLayout string
ConfigFile string
Title string
Indexes map[string]string // singular, plural
ProcessFilters map[string][]string
Params map[string]interface{}
Permalinks PermalinkOverrides
BuildDrafts, UglyUrls, Verbose bool
CanonifyUrls bool
}
var c Config
// Read cfgfile or setup defaults.
func SetupConfig(cfgfile *string, path *string) *Config {
c.setPath(*path)
cfg, err := c.findConfigFile(*cfgfile)
c.ConfigFile = cfg
if err != nil {
fmt.Printf("%v", err)
fmt.Println(" using defaults instead")
}
// set defaults
c.ContentDir = "content"
c.LayoutDir = "layouts"
c.PublishDir = "public"
c.StaticDir = "static"
c.DefaultLayout = "post"
c.BuildDrafts = false
c.UglyUrls = false
c.Verbose = false
c.CanonifyUrls = true
c.readInConfig()
// set index defaults if none provided
if len(c.Indexes) == 0 {
c.Indexes = make(map[string]string)
c.Indexes["tag"] = "tags"
c.Indexes["category"] = "categories"
}
// ensure map exists, albeit empty
if c.Permalinks == nil {
c.Permalinks = make(PermalinkOverrides, 0)
}
if !strings.HasSuffix(c.BaseUrl, "/") {
c.BaseUrl = c.BaseUrl + "/"
}
return &c
}
func (c *Config) readInConfig() {
file, err := ioutil.ReadFile(c.ConfigFile)
if err == nil {
switch path.Ext(c.ConfigFile) {
case ".yaml":
if err := goyaml.Unmarshal(file, &c); err != nil {
fmt.Printf("Error parsing config: %s", err)
os.Exit(1)
}
case ".json":
if err := json.Unmarshal(file, &c); err != nil {
fmt.Printf("Error parsing config: %s", err)
os.Exit(1)
}
case ".toml":
if _, err := toml.Decode(string(file), &c); err != nil {
fmt.Printf("Error parsing config: %s", err)
os.Exit(1)
}
}
}
}
func (c *Config) setPath(p string) {
if p == "" {
path, err := findPath()
if err != nil {
fmt.Printf("Error finding path: %s", err)
}
c.Path = path
} else {
path, err := filepath.Abs(p)
if err != nil {
fmt.Printf("Error finding path: %s", err)
}
c.Path = path
}
}
func (c *Config) GetPath() string {
if c.Path == "" {
c.setPath("")
}
return c.Path
}
func findPath() (string, error) {
serverFile, err := filepath.Abs(os.Args[0])
if err != nil {
return "", fmt.Errorf("Can't get absolute path for executable: %v", err)
}
path := filepath.Dir(serverFile)
realFile, err := filepath.EvalSymlinks(serverFile)
if err != nil {
if _, err = os.Stat(serverFile + ".exe"); err == nil {
realFile = filepath.Clean(serverFile + ".exe")
}
}
if err == nil && realFile != serverFile {
path = filepath.Dir(realFile)
}
return path, nil
}
// GetAbsPath return the absolute path for a given path with the internal slashes
// properly converted.
func (c *Config) GetAbsPath(name string) string {
if filepath.IsAbs(name) {
return name
}
return filepath.Join(c.GetPath(), name)
}
func (c *Config) findConfigFile(configFileName string) (string, error) {
if configFileName == "" { // config not specified, let's search
if b, _ := exists(c.GetAbsPath("config.json")); b {
return c.GetAbsPath("config.json"), nil
}
if b, _ := exists(c.GetAbsPath("config.toml")); b {
return c.GetAbsPath("config.toml"), nil
}
if b, _ := exists(c.GetAbsPath("config.yaml")); b {
return c.GetAbsPath("config.yaml"), nil
}
return "", fmt.Errorf("config file not found in: %s", c.GetPath())
} else {
// If the full path is given, just use that
if path.IsAbs(configFileName) {
return configFileName, nil
}
// Else check the local directory
t := c.GetAbsPath(configFileName)
if b, _ := exists(t); b {
return t, nil
} else {
return "", fmt.Errorf("config file not found at: %s", t)
}
}
}
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