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|
package dasel
import (
"fmt"
)
var FilterFunc = BasicFunction{
name: "filter",
runFn: func(c *Context, s *Step, args []string) (Values, error) {
if err := requireXOrMoreArgs("filter", args, 1); err != nil {
return nil, err
}
input := s.inputs()
runComparison := func(value Value, selector string) (bool, error) {
gotValues, err := c.subSelect(value, selector)
if err != nil {
return false, err
}
if len(gotValues) > 1 {
return false, fmt.Errorf("filter expects selector to return a single value")
}
if len(gotValues) == 0 {
return false, nil
}
return IsTruthy(gotValues[0]), nil
}
res := make(Values, 0)
for _, val := range input {
valPassed := true
for _, cmp := range args {
pass, err := runComparison(val, cmp)
if err != nil {
return nil, err
}
if !pass {
valPassed = false
break
}
}
if valPassed {
res = append(res, val)
}
}
return res, nil
},
}
|
