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|
package gojsonq
import (
"fmt"
"reflect"
"strings"
)
const (
operatorEq = "="
operatorEqEng = "eq"
operatorNotEq = "!="
operatorNotEqEng = "neq"
operatorNotEqAnother = "<>"
operatorGt = ">"
operatorGtEng = "gt"
operatorLt = "<"
operatorLtEng = "lt"
operatorGtE = ">="
operatorGtEEng = "gte"
operatorLtE = "<="
operatorLtEEng = "lte"
operatorStrictContains = "strictContains"
operatorContains = "contains"
operatorEndsWith = "endsWith"
operatorStartsWith = "startsWith"
operatorIn = "in"
operatorNotIn = "notIn"
operatorLenEq = "leneq"
operatorLenNotEq = "lenneq"
operatorLenGt = "lengt"
operatorLenGte = "lengte"
operatorLenLt = "lenlt"
operatorLenLte = "lenlte"
)
func defaultQueries() map[string]QueryFunc {
return map[string]QueryFunc{
operatorEq: eq,
operatorEqEng: eq,
operatorNotEq: neq,
operatorNotEqEng: neq,
operatorNotEqAnother: neq,
operatorGt: gt,
operatorGtEng: gt,
operatorLt: lt,
operatorLtEng: lt,
operatorGtE: gte,
operatorGtEEng: gte,
operatorLtE: lte,
operatorLtEEng: lte,
operatorStrictContains: strStrictContains,
operatorContains: strContains,
operatorStartsWith: strStartsWith,
operatorEndsWith: strEndsWith,
operatorIn: in,
operatorNotIn: notIn,
operatorLenEq: lenEq,
operatorLenNotEq: lenNotEq,
operatorLenGt: lenGt,
operatorLenGte: lenGte,
operatorLenLt: lenLt,
operatorLenLte: lenLte,
}
}
// QueryFunc describes a conditional function which perform comparison
type QueryFunc func(x, y interface{}) (bool, error)
// eq checks whether x, y are deeply eq
func eq(x, y interface{}) (bool, error) {
// if the y value is numeric (int/int8-int64/float32/float64) then convert to float64
if fv, ok := toFloat64(y); ok {
y = fv
}
return reflect.DeepEqual(x, y), nil
}
// neq checks whether x, y are deeply not equal
func neq(x, y interface{}) (bool, error) {
b, err := eq(x, y)
return !b, err
}
// gt checks whether x is greather than y
func gt(x, y interface{}) (bool, error) {
xv, ok := x.(float64)
if !ok {
return false, fmt.Errorf("%v must be numeric", x)
}
// if the y value is numeric (int/int8-int64/float32/float64) then convert to float64
if fv, ok := toFloat64(y); ok {
return xv > fv, nil
}
return false, nil
}
// lt checks whether x is less than y
func lt(x, y interface{}) (bool, error) {
xv, ok := x.(float64)
if !ok {
return false, fmt.Errorf("%v must be numeric", x)
}
// if the y value is numeric (int/int8-int64/float32/float64) then convert to float64
if fv, ok := toFloat64(y); ok {
return xv < fv, nil
}
return false, nil
}
// gte checks whether x is greater than or equal to y
func gte(x, y interface{}) (bool, error) {
xv, ok := x.(float64)
if !ok {
return false, fmt.Errorf("%v must be numeric", x)
}
// if the y value is numeric (int/int8-int64/float32/float64) then convert to float64
if fv, ok := toFloat64(y); ok {
return xv >= fv, nil
}
return false, nil
}
// lte checks whether x is less than or equal to y
func lte(x, y interface{}) (bool, error) {
xv, ok := x.(float64)
if !ok {
return false, fmt.Errorf("%v must be numeric", x)
}
// if the y value is numeric (int/int8-int64/float32/float64) then convert to float64
if fv, ok := toFloat64(y); ok {
return xv <= fv, nil
}
return false, nil
}
// strStrictContains checks if x contains y
// This is case sensitive search
func strStrictContains(x, y interface{}) (bool, error) {
xv, okX := x.(string)
if !okX {
return false, fmt.Errorf("%v must be string", x)
}
yv, okY := y.(string)
if !okY {
return false, fmt.Errorf("%v must be string", y)
}
return strings.Contains(xv, yv), nil
}
// strContains checks if x contains y
// This is case insensitive search
func strContains(x, y interface{}) (bool, error) {
xv, okX := x.(string)
if !okX {
return false, fmt.Errorf("%v must be string", x)
}
yv, okY := y.(string)
if !okY {
return false, fmt.Errorf("%v must be string", y)
}
return strings.Contains(strings.ToLower(xv), strings.ToLower(yv)), nil
}
// strStartsWith checks if x starts with y
func strStartsWith(x, y interface{}) (bool, error) {
xv, okX := x.(string)
if !okX {
return false, fmt.Errorf("%v must be string", x)
}
yv, okY := y.(string)
if !okY {
return false, fmt.Errorf("%v must be string", y)
}
return strings.HasPrefix(xv, yv), nil
}
// strEndsWith checks if x ends with y
func strEndsWith(x, y interface{}) (bool, error) {
xv, okX := x.(string)
if !okX {
return false, fmt.Errorf("%v must be string", x)
}
yv, okY := y.(string)
if !okY {
return false, fmt.Errorf("%v must be string", y)
}
return strings.HasSuffix(xv, yv), nil
}
// in checks if x exists in y e.g: in("id", []int{1,3,5,8})
func in(x, y interface{}) (bool, error) {
if yv, ok := y.([]string); ok {
for _, v := range yv {
if ok, _ := eq(x, v); ok {
return true, nil
}
}
}
if yv, ok := y.([]int); ok {
for _, v := range yv {
if ok, _ := eq(x, v); ok {
return true, nil
}
}
}
if yv, ok := y.([]float64); ok {
for _, v := range yv {
if ok, _ := eq(x, v); ok {
return true, nil
}
}
}
return false, nil
}
// notIn checks if x doesn't exists in y e.g: in("id", []int{1,3,5,8})
func notIn(x, y interface{}) (bool, error) {
b, err := in(x, y)
return !b, err
}
// lenEq checks if the string/array/list value is equal
func lenEq(x, y interface{}) (bool, error) {
yv, ok := y.(int)
if !ok {
return false, fmt.Errorf("%v must be integer", y)
}
xv, err := length(x)
if err != nil {
return false, err
}
return xv == yv, nil
}
// lenNotEq checks if the string/array/list value is not equal
func lenNotEq(x, y interface{}) (bool, error) {
yv, ok := y.(int)
if !ok {
return false, fmt.Errorf("%v must be integer", y)
}
xv, err := length(x)
if err != nil {
return false, err
}
return xv != yv, nil
}
// lenGt checks if the string/array/list value is greater
func lenGt(x, y interface{}) (bool, error) {
yv, ok := y.(int)
if !ok {
return false, fmt.Errorf("%v must be integer", y)
}
xv, err := length(x)
if err != nil {
return false, err
}
return xv > yv, nil
}
// lenLt checks if the string/array/list value is less
func lenLt(x, y interface{}) (bool, error) {
yv, ok := y.(int)
if !ok {
return false, fmt.Errorf("%v must be integer", y)
}
xv, err := length(x)
if err != nil {
return false, err
}
return xv < yv, nil
}
// lenGte checks if the string/array/list value is greater than equal
func lenGte(x, y interface{}) (bool, error) {
yv, ok := y.(int)
if !ok {
return false, fmt.Errorf("%v must be integer", y)
}
xv, err := length(x)
if err != nil {
return false, err
}
return xv >= yv, nil
}
// lenLte checks if the string/array/list value is less than equal
func lenLte(x, y interface{}) (bool, error) {
yv, ok := y.(int)
if !ok {
return false, fmt.Errorf("%v must be integer", y)
}
xv, err := length(x)
if err != nil {
return false, err
}
return xv <= yv, nil
}
|
