/
format.go
56 lines (48 loc) · 1.34 KB
/
format.go
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package dynaml
import (
"fmt"
"log"
"github.com/mandelsoft/spiff/yaml"
"github.com/mandelsoft/spiff/legacy/candiedyaml"
)
func func_format(arguments []interface{}, binding Binding) (interface{}, EvaluationInfo, bool) {
return format("format", arguments, binding)
}
func format(name string, arguments []interface{}, binding Binding) (interface{}, EvaluationInfo, bool) {
info := DefaultInfo()
if len(arguments) < 1 {
return info.Error("alt least one argument required for '%s'", name)
}
args := make([]interface{}, len(arguments))
for i, arg := range arguments {
switch v := arg.(type) {
case []yaml.Node:
yaml, err := candiedyaml.Marshal(NewNode(v, nil))
if err != nil {
log.Fatalln("error marshalling yaml fragment:", err)
}
args[i] = string(yaml)
case map[string]yaml.Node:
yaml, err := candiedyaml.Marshal(NewNode(v, nil))
if err != nil {
log.Fatalln("error marshalling yaml fragment:", err)
}
args[i] = string(yaml)
case TemplateValue:
yaml, err := candiedyaml.Marshal(v.Orig)
if err != nil {
log.Fatalln("error marshalling template:", err)
}
args[i] = string(yaml)
case LambdaValue:
args[i] = v.String()
default:
args[i] = arg
}
}
f, ok := args[0].(string)
if !ok {
return info.Error("%s: format must be string", format)
}
return fmt.Sprintf(f, args[1:]...), info, true
}