diff options
Diffstat (limited to 'vendor/github.com/jmespath/go-jmespath/util.go')
-rw-r--r-- | vendor/github.com/jmespath/go-jmespath/util.go | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/vendor/github.com/jmespath/go-jmespath/util.go b/vendor/github.com/jmespath/go-jmespath/util.go deleted file mode 100644 index ddc1b7d..0000000 --- a/vendor/github.com/jmespath/go-jmespath/util.go +++ /dev/null @@ -1,185 +0,0 @@ -package jmespath - -import ( - "errors" - "reflect" -) - -// IsFalse determines if an object is false based on the JMESPath spec. -// JMESPath defines false values to be any of: -// - An empty string array, or hash. -// - The boolean value false. -// - nil -func isFalse(value interface{}) bool { - switch v := value.(type) { - case bool: - return !v - case []interface{}: - return len(v) == 0 - case map[string]interface{}: - return len(v) == 0 - case string: - return len(v) == 0 - case nil: - return true - } - // Try the reflection cases before returning false. - rv := reflect.ValueOf(value) - switch rv.Kind() { - case reflect.Struct: - // A struct type will never be false, even if - // all of its values are the zero type. - return false - case reflect.Slice, reflect.Map: - return rv.Len() == 0 - case reflect.Ptr: - if rv.IsNil() { - return true - } - // If it's a pointer type, we'll try to deref the pointer - // and evaluate the pointer value for isFalse. - element := rv.Elem() - return isFalse(element.Interface()) - } - return false -} - -// ObjsEqual is a generic object equality check. -// It will take two arbitrary objects and recursively determine -// if they are equal. -func objsEqual(left interface{}, right interface{}) bool { - return reflect.DeepEqual(left, right) -} - -// SliceParam refers to a single part of a slice. -// A slice consists of a start, a stop, and a step, similar to -// python slices. -type sliceParam struct { - N int - Specified bool -} - -// Slice supports [start:stop:step] style slicing that's supported in JMESPath. -func slice(slice []interface{}, parts []sliceParam) ([]interface{}, error) { - computed, err := computeSliceParams(len(slice), parts) - if err != nil { - return nil, err - } - start, stop, step := computed[0], computed[1], computed[2] - result := []interface{}{} - if step > 0 { - for i := start; i < stop; i += step { - result = append(result, slice[i]) - } - } else { - for i := start; i > stop; i += step { - result = append(result, slice[i]) - } - } - return result, nil -} - -func computeSliceParams(length int, parts []sliceParam) ([]int, error) { - var start, stop, step int - if !parts[2].Specified { - step = 1 - } else if parts[2].N == 0 { - return nil, errors.New("Invalid slice, step cannot be 0") - } else { - step = parts[2].N - } - var stepValueNegative bool - if step < 0 { - stepValueNegative = true - } else { - stepValueNegative = false - } - - if !parts[0].Specified { - if stepValueNegative { - start = length - 1 - } else { - start = 0 - } - } else { - start = capSlice(length, parts[0].N, step) - } - - if !parts[1].Specified { - if stepValueNegative { - stop = -1 - } else { - stop = length - } - } else { - stop = capSlice(length, parts[1].N, step) - } - return []int{start, stop, step}, nil -} - -func capSlice(length int, actual int, step int) int { - if actual < 0 { - actual += length - if actual < 0 { - if step < 0 { - actual = -1 - } else { - actual = 0 - } - } - } else if actual >= length { - if step < 0 { - actual = length - 1 - } else { - actual = length - } - } - return actual -} - -// ToArrayNum converts an empty interface type to a slice of float64. -// If any element in the array cannot be converted, then nil is returned -// along with a second value of false. -func toArrayNum(data interface{}) ([]float64, bool) { - // Is there a better way to do this with reflect? - if d, ok := data.([]interface{}); ok { - result := make([]float64, len(d)) - for i, el := range d { - item, ok := el.(float64) - if !ok { - return nil, false - } - result[i] = item - } - return result, true - } - return nil, false -} - -// ToArrayStr converts an empty interface type to a slice of strings. -// If any element in the array cannot be converted, then nil is returned -// along with a second value of false. If the input data could be entirely -// converted, then the converted data, along with a second value of true, -// will be returned. -func toArrayStr(data interface{}) ([]string, bool) { - // Is there a better way to do this with reflect? - if d, ok := data.([]interface{}); ok { - result := make([]string, len(d)) - for i, el := range d { - item, ok := el.(string) - if !ok { - return nil, false - } - result[i] = item - } - return result, true - } - return nil, false -} - -func isSliceType(v interface{}) bool { - if v == nil { - return false - } - return reflect.TypeOf(v).Kind() == reflect.Slice -} |