c4ebd80669
Implements conf.Load to populate tagged structs from a chain of Sources (env, .env, YAML/JSON/TOML, custom). Supports default values, slice separators, nested structs, pointer fields, and a Validator hook. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
33 lines
728 B
Go
33 lines
728 B
Go
package conf
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import (
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"io"
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"os"
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"git.juancwu.dev/juancwu/errx"
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"github.com/goccy/go-yaml"
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)
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// YAMLFile loads a YAML document and exposes it as a flat key->string Source.
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func YAMLFile(path string) (Source, error) {
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const op = "conf.YAMLFile"
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f, err := os.Open(path)
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if err != nil {
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return nil, errx.Wrapf(op, err, "open %s", path)
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}
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defer f.Close()
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return YAMLReader(f)
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}
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// YAMLReader is YAMLFile for an arbitrary reader.
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func YAMLReader(r io.Reader) (Source, error) {
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const op = "conf.YAMLReader"
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var raw map[string]any
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if err := yaml.NewDecoder(r).Decode(&raw); err != nil {
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if err == io.EOF {
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return MapSource(nil), nil
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}
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return nil, errx.Wrap(op, err)
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}
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return MapSource(flatten(raw)), nil
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}
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