43227744e7
When using `cs, err := ...` in a nested scope, it masks `cs` and `err` from any parent scope.
57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
package colorschemes
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import (
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"encoding/json"
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"fmt"
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"path/filepath"
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"strings"
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"github.com/shibukawa/configdir"
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)
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var registry map[string]Colorscheme
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func init() {
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if registry == nil {
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registry = make(map[string]Colorscheme)
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}
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}
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func FromName(confDir configdir.ConfigDir, c string) (Colorscheme, error) {
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if cs, ok := registry[c]; ok {
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return cs, nil
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}
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cs, err := getCustomColorscheme(confDir, c)
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return cs, err
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}
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func register(name string, c Colorscheme) {
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if registry == nil {
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registry = make(map[string]Colorscheme)
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}
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registry[name] = c
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}
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// getCustomColorscheme tries to read a custom json colorscheme from <configDir>/<name>.json
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func getCustomColorscheme(confDir configdir.ConfigDir, name string) (Colorscheme, error) {
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var cs Colorscheme
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fn := name + ".json"
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folder := confDir.QueryFolderContainsFile(fn)
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if folder == nil {
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paths := make([]string, 0)
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for _, d := range confDir.QueryFolders(configdir.Existing) {
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paths = append(paths, d.Path)
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}
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return cs, fmt.Errorf("failed to find colorscheme file %s in %s", fn, strings.Join(paths, ", "))
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}
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dat, err := folder.ReadFile(fn)
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if err != nil {
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return cs, fmt.Errorf("failed to read colorscheme file %s: %v", filepath.Join(folder.Path, fn), err)
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}
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err = json.Unmarshal(dat, &cs)
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if err != nil {
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return cs, fmt.Errorf("failed to parse colorscheme file: %v", err)
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}
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return cs, nil
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}
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