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new cue runtime operational, ready to rock and roll
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| package cuefig | ||
|
|
||
| // Name: config | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
|
|
||
| "cuelang.org/go/cue" | ||
| // "cuelang.org/go/cue/build" | ||
| "cuelang.org/go/cue/errors" | ||
| "cuelang.org/go/cue/load" | ||
|
|
||
| "github.com/hofstadter-io/hof/lib/util" | ||
| ) | ||
|
|
||
| const ( | ||
| ConfigEntrypoint = ".hofcfg.cue" | ||
| ConfigWorkpath = "" | ||
| ConfigLocation = "local" | ||
| ) | ||
|
|
||
| func LoadConfigDefault(cfg interface{}) (cue.Value, error) { | ||
| return LoadConfigConfig(ConfigWorkpath, ConfigEntrypoint, cfg) | ||
| } | ||
|
|
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| func LoadConfigConfig(workpath, entrypoint string, cfg interface{}) (val cue.Value, err error) { | ||
| fmt.Println("Cuefig[Config].Load:", workpath, entrypoint) | ||
|
|
||
| // Fallback order: local / user / global | ||
| fpath := filepath.Join(workpath, entrypoint) | ||
|
|
||
| // possibly, check for workpath | ||
| if workpath != "" { | ||
| _, err = os.Lstat(workpath) | ||
| if err != nil { | ||
| if _, ok := err.(*os.PathError); !ok && (strings.Contains(err.Error(), "file does not exist") || strings.Contains(err.Error(), "no such file")) { | ||
| // error is worse than non-existant | ||
| return val, err | ||
| } | ||
| // otherwise, does not exist, so we should init? | ||
| // XXX want to let applications decide how to handle this | ||
| fmt.Println("missing:", workpath) | ||
| return val, err | ||
| } | ||
| } | ||
|
|
||
| // check for entrypoint | ||
| _, err = os.Lstat(fpath) | ||
| if err != nil { | ||
| if _, ok := err.(*os.PathError); !ok && (strings.Contains(err.Error(), "file does not exist") || strings.Contains(err.Error(), "no such file")) { | ||
| // error is worse than non-existant | ||
| return val, err | ||
| } | ||
| // otherwise, does not exist, so we should init? | ||
| // XXX want to let applications decide how to handle this | ||
| fmt.Println("missing:", fpath) | ||
| return val, err | ||
| } | ||
|
|
||
| fmt.Println(" - found cue file:", fpath) | ||
|
|
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| var errs []error | ||
|
|
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| CueRT := &cue.Runtime{} | ||
| BIS := load.Instances([]string{fpath}, nil) | ||
| for _, bi := range BIS { | ||
|
|
||
| if bi.Err != nil { | ||
| // fmt.Println("BI ERR", bi.Err, bi.Incomplete, bi.DepsErrors) | ||
| es := errors.Errors(bi.Err) | ||
| for _, e := range es { | ||
| errs = append(errs, e.(error)) | ||
| } | ||
| continue | ||
| } | ||
|
|
||
| // Build the Instance | ||
| I, err := CueRT.Build(bi) | ||
| if err != nil { | ||
| es := errors.Errors(err) | ||
| // fmt.Println("BUILD ERR", es, I) | ||
| for _, e := range es { | ||
| errs = append(errs, e.(error)) | ||
| } | ||
| continue | ||
| } | ||
|
|
||
| // Get top level value from cuelang | ||
| V := I.Value() | ||
|
|
||
| err = V.Decode(&cfg) | ||
| if err != nil { | ||
| errs = append(errs, err) | ||
| continue | ||
| } | ||
|
|
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| val = V | ||
|
|
||
| } | ||
|
|
||
| if len(errs) > 0 { | ||
| for _, e := range errs { | ||
| util.PrintCueError(e) | ||
| } | ||
| return val, fmt.Errorf("Errors while reading Config file: %q", fpath) | ||
| } | ||
|
|
||
| return val, nil | ||
| } |
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