mirror of https://github.com/cheat/cheat.git
96 lines
2.3 KiB
Go
96 lines
2.3 KiB
Go
package config
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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cp "github.com/cheat/cheat/internal/cheatpath"
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"github.com/mitchellh/go-homedir"
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"gopkg.in/yaml.v2"
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)
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// Config encapsulates configuration parameters
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type Config struct {
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Colorize bool `yaml:colorize`
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Editor string `yaml:editor`
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Cheatpaths []cp.Cheatpath `yaml:cheatpaths`
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Style string `yaml:style`
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Formatter string `yaml:formatter`
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}
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// New returns a new Config struct
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func New(opts map[string]interface{}, confPath string, resolve bool) (Config, error) {
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// read the config file
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buf, err := ioutil.ReadFile(confPath)
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if err != nil {
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return Config{}, fmt.Errorf("could not read config file: %v", err)
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}
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// initialize a config object
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conf := Config{}
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// unmarshal the yaml
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err = yaml.UnmarshalStrict(buf, &conf)
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if err != nil {
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return Config{}, fmt.Errorf("could not unmarshal yaml: %v", err)
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}
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// process cheatpaths
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for i, cheatpath := range conf.Cheatpaths {
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// expand ~ in config paths
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expanded, err := homedir.Expand(cheatpath.Path)
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if err != nil {
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return Config{}, fmt.Errorf("failed to expand ~: %v", err)
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}
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// follow symlinks
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//
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// NB: `resolve` is an ugly kludge that exists for the sake of unit-tests.
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// It's necessary because `EvalSymlinks` will error if the symlink points
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// to a non-existent location on the filesystem. When unit-testing,
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// however, we don't want to have dependencies on the filesystem. As such,
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// `resolve` is a switch that allows us to turn off symlink resolution when
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// running the config tests.
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if resolve {
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expanded, err = filepath.EvalSymlinks(expanded)
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if err != nil {
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return Config{}, fmt.Errorf(
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"failed to resolve symlink: %s, %v",
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expanded,
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err,
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)
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}
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}
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conf.Cheatpaths[i].Path = expanded
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}
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// if an editor was not provided in the configs, look to envvars
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if conf.Editor == "" {
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if os.Getenv("VISUAL") != "" {
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conf.Editor = os.Getenv("VISUAL")
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} else if os.Getenv("EDITOR") != "" {
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conf.Editor = os.Getenv("EDITOR")
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} else {
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return Config{}, fmt.Errorf("no editor set")
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}
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}
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// if a chroma style was not provided, set a default
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if conf.Style == "" {
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conf.Style = "bw"
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}
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// if a chroma formatter was not provided, set a default
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if conf.Formatter == "" {
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conf.Formatter = "terminal16m"
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}
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return conf, nil
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}
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