forked from ollama/ollama
/
mapstruct.go
61 lines (57 loc) · 1.19 KB
/
mapstruct.go
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package llm
import (
"encoding/json"
"os"
"strings"
)
// Env constructs a configuration map from OS environment variables with the provided prefix, like "llm_"
func Env(prefix string) map[string]any {
out := make(map[string]any)
for _, env := range os.Environ() {
if !strings.HasPrefix(env, prefix) {
continue
}
env = env[len(prefix):]
ix := strings.IndexByte(env, '=')
if ix < 0 {
continue
}
name, env := env[:ix], env[ix+1:]
if env == `` {
continue // empty strings are ignored.
}
var v any
err := json.Unmarshal([]byte(env), &v)
if err == nil {
out[env] = v
continue
}
out[name] = env
}
return out
}
// Map will marshal the provided structure pointer into a map.
func Map(ref any, out map[string]any) error {
js, err := json.Marshal(ref)
if err != nil {
return err
}
mid := make(map[string]any)
err = json.Unmarshal(js, &mid)
if err != nil {
return err
}
for k, v := range mid {
out[k] = v
}
return nil
}
// Unmap will unmarshal the provided map into the provided structure pointer.
func Unmap(in map[string]any, ref any) error {
js, err := json.Marshal(in)
if err != nil {
return err
}
os.Stderr.Write(js)
return json.Unmarshal(js, ref)
}