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Diffstat (limited to 'vendor/github.com/labstack/echo/v4/binder.go')
| -rw-r--r-- | vendor/github.com/labstack/echo/v4/binder.go | 1230 |
1 files changed, 1230 insertions, 0 deletions
diff --git a/vendor/github.com/labstack/echo/v4/binder.go b/vendor/github.com/labstack/echo/v4/binder.go new file mode 100644 index 00000000..0900ce8d --- /dev/null +++ b/vendor/github.com/labstack/echo/v4/binder.go @@ -0,0 +1,1230 @@ +package echo + +import ( + "fmt" + "net/http" + "strconv" + "strings" + "time" +) + +/** + Following functions provide handful of methods for binding to Go native types from request query or path parameters. + * QueryParamsBinder(c) - binds query parameters (source URL) + * PathParamsBinder(c) - binds path parameters (source URL) + * FormFieldBinder(c) - binds form fields (source URL + body) + + Example: + ```go + var length int64 + err := echo.QueryParamsBinder(c).Int64("length", &length).BindError() + ``` + + For every supported type there are following methods: + * <Type>("param", &destination) - if parameter value exists then binds it to given destination of that type i.e Int64(...). + * Must<Type>("param", &destination) - parameter value is required to exist, binds it to given destination of that type i.e MustInt64(...). + * <Type>s("param", &destination) - (for slices) if parameter values exists then binds it to given destination of that type i.e Int64s(...). + * Must<Type>s("param", &destination) - (for slices) parameter value is required to exist, binds it to given destination of that type i.e MustInt64s(...). + + for some slice types `BindWithDelimiter("param", &dest, ",")` supports splitting parameter values before type conversion is done + i.e. URL `/api/search?id=1,2,3&id=1` can be bind to `[]int64{1,2,3,1}` + + `FailFast` flags binder to stop binding after first bind error during binder call chain. Enabled by default. + `BindError()` returns first bind error from binder and resets errors in binder. Useful along with `FailFast()` method + to do binding and returns on first problem + `BindErrors()` returns all bind errors from binder and resets errors in binder. + + Types that are supported: + * bool + * float32 + * float64 + * int + * int8 + * int16 + * int32 + * int64 + * uint + * uint8/byte (does not support `bytes()`. Use BindUnmarshaler/CustomFunc to convert value from base64 etc to []byte{}) + * uint16 + * uint32 + * uint64 + * string + * time + * duration + * BindUnmarshaler() interface + * UnixTime() - converts unix time (integer) to time.Time + * UnixTimeNano() - converts unix time with nano second precision (integer) to time.Time + * CustomFunc() - callback function for your custom conversion logic. Signature `func(values []string) []error` +*/ + +// BindingError represents an error that occurred while binding request data. +type BindingError struct { + // Field is the field name where value binding failed + Field string `json:"field"` + // Values of parameter that failed to bind. + Values []string `json:"-"` + *HTTPError +} + +// NewBindingError creates new instance of binding error +func NewBindingError(sourceParam string, values []string, message interface{}, internalError error) error { + return &BindingError{ + Field: sourceParam, + Values: values, + HTTPError: &HTTPError{ + Code: http.StatusBadRequest, + Message: message, + Internal: internalError, + }, + } +} + +// Error returns error message +func (be *BindingError) Error() string { + return fmt.Sprintf("%s, field=%s", be.HTTPError.Error(), be.Field) +} + +// ValueBinder provides utility methods for binding query or path parameter to various Go built-in types +type ValueBinder struct { + // failFast is flag for binding methods to return without attempting to bind when previous binding already failed + failFast bool + errors []error + + // ValueFunc is used to get single parameter (first) value from request + ValueFunc func(sourceParam string) string + // ValuesFunc is used to get all values for parameter from request. i.e. `/api/search?ids=1&ids=2` + ValuesFunc func(sourceParam string) []string + // ErrorFunc is used to create errors. Allows you to use your own error type, that for example marshals to your specific json response + ErrorFunc func(sourceParam string, values []string, message interface{}, internalError error) error +} + +// QueryParamsBinder creates query parameter value binder +func QueryParamsBinder(c Context) *ValueBinder { + return &ValueBinder{ + failFast: true, + ValueFunc: c.QueryParam, + ValuesFunc: func(sourceParam string) []string { + values, ok := c.QueryParams()[sourceParam] + if !ok { + return nil + } + return values + }, + ErrorFunc: NewBindingError, + } +} + +// PathParamsBinder creates path parameter value binder +func PathParamsBinder(c Context) *ValueBinder { + return &ValueBinder{ + failFast: true, + ValueFunc: c.Param, + ValuesFunc: func(sourceParam string) []string { + // path parameter should not have multiple values so getting values does not make sense but lets not error out here + value := c.Param(sourceParam) + if value == "" { + return nil + } + return []string{value} + }, + ErrorFunc: NewBindingError, + } +} + +// FormFieldBinder creates form field value binder +// For all requests, FormFieldBinder parses the raw query from the URL and uses query params as form fields +// +// For POST, PUT, and PATCH requests, it also reads the request body, parses it +// as a form and uses query params as form fields. Request body parameters take precedence over URL query +// string values in r.Form. +// +// NB: when binding forms take note that this implementation uses standard library form parsing +// which parses form data from BOTH URL and BODY if content type is not MIMEMultipartForm +// See https://golang.org/pkg/net/http/#Request.ParseForm +func FormFieldBinder(c Context) *ValueBinder { + vb := &ValueBinder{ + failFast: true, + ValueFunc: func(sourceParam string) string { + return c.Request().FormValue(sourceParam) + }, + ErrorFunc: NewBindingError, + } + vb.ValuesFunc = func(sourceParam string) []string { + if c.Request().Form == nil { + // this is same as `Request().FormValue()` does internally + _ = c.Request().ParseMultipartForm(32 << 20) + } + values, ok := c.Request().Form[sourceParam] + if !ok { + return nil + } + return values + } + + return vb +} + +// FailFast set internal flag to indicate if binding methods will return early (without binding) when previous bind failed +// NB: call this method before any other binding methods as it modifies binding methods behaviour +func (b *ValueBinder) FailFast(value bool) *ValueBinder { + b.failFast = value + return b +} + +func (b *ValueBinder) setError(err error) { + if b.errors == nil { + b.errors = []error{err} + return + } + b.errors = append(b.errors, err) +} + +// BindError returns first seen bind error and resets/empties binder errors for further calls +func (b *ValueBinder) BindError() error { + if b.errors == nil { + return nil + } + err := b.errors[0] + b.errors = nil // reset errors so next chain will start from zero + return err +} + +// BindErrors returns all bind errors and resets/empties binder errors for further calls +func (b *ValueBinder) BindErrors() []error { + if b.errors == nil { + return nil + } + errors := b.errors + b.errors = nil // reset errors so next chain will start from zero + return errors +} + +// CustomFunc binds parameter values with Func. Func is called only when parameter values exist. +func (b *ValueBinder) CustomFunc(sourceParam string, customFunc func(values []string) []error) *ValueBinder { + return b.customFunc(sourceParam, customFunc, false) +} + +// MustCustomFunc requires parameter values to exist to be bind with Func. Returns error when value does not exist. +func (b *ValueBinder) MustCustomFunc(sourceParam string, customFunc func(values []string) []error) *ValueBinder { + return b.customFunc(sourceParam, customFunc, true) +} + +func (b *ValueBinder) customFunc(sourceParam string, customFunc func(values []string) []error, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + values := b.ValuesFunc(sourceParam) + if len(values) == 0 { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + } + return b + } + if errs := customFunc(values); errs != nil { + b.errors = append(b.errors, errs...) + } + return b +} + +// String binds parameter to string variable +func (b *ValueBinder) String(sourceParam string, dest *string) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValueFunc(sourceParam) + if value == "" { + return b + } + *dest = value + return b +} + +// MustString requires parameter value to exist to be bind to string variable. Returns error when value does not exist +func (b *ValueBinder) MustString(sourceParam string, dest *string) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValueFunc(sourceParam) + if value == "" { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "required field value is empty", nil)) + return b + } + *dest = value + return b +} + +// Strings binds parameter values to slice of string +func (b *ValueBinder) Strings(sourceParam string, dest *[]string) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValuesFunc(sourceParam) + if value == nil { + return b + } + *dest = value + return b +} + +// MustStrings requires parameter values to exist to be bind to slice of string variables. Returns error when value does not exist +func (b *ValueBinder) MustStrings(sourceParam string, dest *[]string) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValuesFunc(sourceParam) + if value == nil { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + return b + } + *dest = value + return b +} + +// BindUnmarshaler binds parameter to destination implementing BindUnmarshaler interface +func (b *ValueBinder) BindUnmarshaler(sourceParam string, dest BindUnmarshaler) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + tmp := b.ValueFunc(sourceParam) + if tmp == "" { + return b + } + + if err := dest.UnmarshalParam(tmp); err != nil { + b.setError(b.ErrorFunc(sourceParam, []string{tmp}, "failed to bind field value to BindUnmarshaler interface", err)) + } + return b +} + +// MustBindUnmarshaler requires parameter value to exist to be bind to destination implementing BindUnmarshaler interface. +// Returns error when value does not exist +func (b *ValueBinder) MustBindUnmarshaler(sourceParam string, dest BindUnmarshaler) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValueFunc(sourceParam) + if value == "" { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "required field value is empty", nil)) + return b + } + + if err := dest.UnmarshalParam(value); err != nil { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "failed to bind field value to BindUnmarshaler interface", err)) + } + return b +} + +// BindWithDelimiter binds parameter to destination by suitable conversion function. +// Delimiter is used before conversion to split parameter value to separate values +func (b *ValueBinder) BindWithDelimiter(sourceParam string, dest interface{}, delimiter string) *ValueBinder { + return b.bindWithDelimiter(sourceParam, dest, delimiter, false) +} + +// MustBindWithDelimiter requires parameter value to exist to be bind destination by suitable conversion function. +// Delimiter is used before conversion to split parameter value to separate values +func (b *ValueBinder) MustBindWithDelimiter(sourceParam string, dest interface{}, delimiter string) *ValueBinder { + return b.bindWithDelimiter(sourceParam, dest, delimiter, true) +} + +func (b *ValueBinder) bindWithDelimiter(sourceParam string, dest interface{}, delimiter string, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + values := b.ValuesFunc(sourceParam) + if len(values) == 0 { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + } + return b + } + tmpValues := make([]string, 0, len(values)) + for _, v := range values { + tmpValues = append(tmpValues, strings.Split(v, delimiter)...) + } + + switch d := dest.(type) { + case *[]string: + *d = tmpValues + return b + case *[]bool: + return b.bools(sourceParam, tmpValues, d) + case *[]int64, *[]int32, *[]int16, *[]int8, *[]int: + return b.ints(sourceParam, tmpValues, d) + case *[]uint64, *[]uint32, *[]uint16, *[]uint8, *[]uint: // *[]byte is same as *[]uint8 + return b.uints(sourceParam, tmpValues, d) + case *[]float64, *[]float32: + return b.floats(sourceParam, tmpValues, d) + case *[]time.Duration: + return b.durations(sourceParam, tmpValues, d) + default: + // support only cases when destination is slice + // does not support time.Time as it needs argument (layout) for parsing or BindUnmarshaler + b.setError(b.ErrorFunc(sourceParam, []string{}, "unsupported bind type", nil)) + return b + } +} + +// Int64 binds parameter to int64 variable +func (b *ValueBinder) Int64(sourceParam string, dest *int64) *ValueBinder { + return b.intValue(sourceParam, dest, 64, false) +} + +// MustInt64 requires parameter value to exist to be bind to int64 variable. Returns error when value does not exist +func (b *ValueBinder) MustInt64(sourceParam string, dest *int64) *ValueBinder { + return b.intValue(sourceParam, dest, 64, true) +} + +// Int32 binds parameter to int32 variable +func (b *ValueBinder) Int32(sourceParam string, dest *int32) *ValueBinder { + return b.intValue(sourceParam, dest, 32, false) +} + +// MustInt32 requires parameter value to exist to be bind to int32 variable. Returns error when value does not exist +func (b *ValueBinder) MustInt32(sourceParam string, dest *int32) *ValueBinder { + return b.intValue(sourceParam, dest, 32, true) +} + +// Int16 binds parameter to int16 variable +func (b *ValueBinder) Int16(sourceParam string, dest *int16) *ValueBinder { + return b.intValue(sourceParam, dest, 16, false) +} + +// MustInt16 requires parameter value to exist to be bind to int16 variable. Returns error when value does not exist +func (b *ValueBinder) MustInt16(sourceParam string, dest *int16) *ValueBinder { + return b.intValue(sourceParam, dest, 16, true) +} + +// Int8 binds parameter to int8 variable +func (b *ValueBinder) Int8(sourceParam string, dest *int8) *ValueBinder { + return b.intValue(sourceParam, dest, 8, false) +} + +// MustInt8 requires parameter value to exist to be bind to int8 variable. Returns error when value does not exist +func (b *ValueBinder) MustInt8(sourceParam string, dest *int8) *ValueBinder { + return b.intValue(sourceParam, dest, 8, true) +} + +// Int binds parameter to int variable +func (b *ValueBinder) Int(sourceParam string, dest *int) *ValueBinder { + return b.intValue(sourceParam, dest, 0, false) +} + +// MustInt requires parameter value to exist to be bind to int variable. Returns error when value does not exist +func (b *ValueBinder) MustInt(sourceParam string, dest *int) *ValueBinder { + return b.intValue(sourceParam, dest, 0, true) +} + +func (b *ValueBinder) intValue(sourceParam string, dest interface{}, bitSize int, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValueFunc(sourceParam) + if value == "" { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + } + return b + } + + return b.int(sourceParam, value, dest, bitSize) +} + +func (b *ValueBinder) int(sourceParam string, value string, dest interface{}, bitSize int) *ValueBinder { + n, err := strconv.ParseInt(value, 10, bitSize) + if err != nil { + if bitSize == 0 { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "failed to bind field value to int", err)) + } else { + b.setError(b.ErrorFunc(sourceParam, []string{value}, fmt.Sprintf("failed to bind field value to int%v", bitSize), err)) + } + return b + } + + switch d := dest.(type) { + case *int64: + *d = n + case *int32: + *d = int32(n) + case *int16: + *d = int16(n) + case *int8: + *d = int8(n) + case *int: + *d = int(n) + } + return b +} + +func (b *ValueBinder) intsValue(sourceParam string, dest interface{}, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + values := b.ValuesFunc(sourceParam) + if len(values) == 0 { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, values, "required field value is empty", nil)) + } + return b + } + return b.ints(sourceParam, values, dest) +} + +func (b *ValueBinder) ints(sourceParam string, values []string, dest interface{}) *ValueBinder { + switch d := dest.(type) { + case *[]int64: + tmp := make([]int64, len(values)) + for i, v := range values { + b.int(sourceParam, v, &tmp[i], 64) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + case *[]int32: + tmp := make([]int32, len(values)) + for i, v := range values { + b.int(sourceParam, v, &tmp[i], 32) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + case *[]int16: + tmp := make([]int16, len(values)) + for i, v := range values { + b.int(sourceParam, v, &tmp[i], 16) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + case *[]int8: + tmp := make([]int8, len(values)) + for i, v := range values { + b.int(sourceParam, v, &tmp[i], 8) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + case *[]int: + tmp := make([]int, len(values)) + for i, v := range values { + b.int(sourceParam, v, &tmp[i], 0) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + } + return b +} + +// Int64s binds parameter to slice of int64 +func (b *ValueBinder) Int64s(sourceParam string, dest *[]int64) *ValueBinder { + return b.intsValue(sourceParam, dest, false) +} + +// MustInt64s requires parameter value to exist to be bind to int64 slice variable. Returns error when value does not exist +func (b *ValueBinder) MustInt64s(sourceParam string, dest *[]int64) *ValueBinder { + return b.intsValue(sourceParam, dest, true) +} + +// Int32s binds parameter to slice of int32 +func (b *ValueBinder) Int32s(sourceParam string, dest *[]int32) *ValueBinder { + return b.intsValue(sourceParam, dest, false) +} + +// MustInt32s requires parameter value to exist to be bind to int32 slice variable. Returns error when value does not exist +func (b *ValueBinder) MustInt32s(sourceParam string, dest *[]int32) *ValueBinder { + return b.intsValue(sourceParam, dest, true) +} + +// Int16s binds parameter to slice of int16 +func (b *ValueBinder) Int16s(sourceParam string, dest *[]int16) *ValueBinder { + return b.intsValue(sourceParam, dest, false) +} + +// MustInt16s requires parameter value to exist to be bind to int16 slice variable. Returns error when value does not exist +func (b *ValueBinder) MustInt16s(sourceParam string, dest *[]int16) *ValueBinder { + return b.intsValue(sourceParam, dest, true) +} + +// Int8s binds parameter to slice of int8 +func (b *ValueBinder) Int8s(sourceParam string, dest *[]int8) *ValueBinder { + return b.intsValue(sourceParam, dest, false) +} + +// MustInt8s requires parameter value to exist to be bind to int8 slice variable. Returns error when value does not exist +func (b *ValueBinder) MustInt8s(sourceParam string, dest *[]int8) *ValueBinder { + return b.intsValue(sourceParam, dest, true) +} + +// Ints binds parameter to slice of int +func (b *ValueBinder) Ints(sourceParam string, dest *[]int) *ValueBinder { + return b.intsValue(sourceParam, dest, false) +} + +// MustInts requires parameter value to exist to be bind to int slice variable. Returns error when value does not exist +func (b *ValueBinder) MustInts(sourceParam string, dest *[]int) *ValueBinder { + return b.intsValue(sourceParam, dest, true) +} + +// Uint64 binds parameter to uint64 variable +func (b *ValueBinder) Uint64(sourceParam string, dest *uint64) *ValueBinder { + return b.uintValue(sourceParam, dest, 64, false) +} + +// MustUint64 requires parameter value to exist to be bind to uint64 variable. Returns error when value does not exist +func (b *ValueBinder) MustUint64(sourceParam string, dest *uint64) *ValueBinder { + return b.uintValue(sourceParam, dest, 64, true) +} + +// Uint32 binds parameter to uint32 variable +func (b *ValueBinder) Uint32(sourceParam string, dest *uint32) *ValueBinder { + return b.uintValue(sourceParam, dest, 32, false) +} + +// MustUint32 requires parameter value to exist to be bind to uint32 variable. Returns error when value does not exist +func (b *ValueBinder) MustUint32(sourceParam string, dest *uint32) *ValueBinder { + return b.uintValue(sourceParam, dest, 32, true) +} + +// Uint16 binds parameter to uint16 variable +func (b *ValueBinder) Uint16(sourceParam string, dest *uint16) *ValueBinder { + return b.uintValue(sourceParam, dest, 16, false) +} + +// MustUint16 requires parameter value to exist to be bind to uint16 variable. Returns error when value does not exist +func (b *ValueBinder) MustUint16(sourceParam string, dest *uint16) *ValueBinder { + return b.uintValue(sourceParam, dest, 16, true) +} + +// Uint8 binds parameter to uint8 variable +func (b *ValueBinder) Uint8(sourceParam string, dest *uint8) *ValueBinder { + return b.uintValue(sourceParam, dest, 8, false) +} + +// MustUint8 requires parameter value to exist to be bind to uint8 variable. Returns error when value does not exist +func (b *ValueBinder) MustUint8(sourceParam string, dest *uint8) *ValueBinder { + return b.uintValue(sourceParam, dest, 8, true) +} + +// Byte binds parameter to byte variable +func (b *ValueBinder) Byte(sourceParam string, dest *byte) *ValueBinder { + return b.uintValue(sourceParam, dest, 8, false) +} + +// MustByte requires parameter value to exist to be bind to byte variable. Returns error when value does not exist +func (b *ValueBinder) MustByte(sourceParam string, dest *byte) *ValueBinder { + return b.uintValue(sourceParam, dest, 8, true) +} + +// Uint binds parameter to uint variable +func (b *ValueBinder) Uint(sourceParam string, dest *uint) *ValueBinder { + return b.uintValue(sourceParam, dest, 0, false) +} + +// MustUint requires parameter value to exist to be bind to uint variable. Returns error when value does not exist +func (b *ValueBinder) MustUint(sourceParam string, dest *uint) *ValueBinder { + return b.uintValue(sourceParam, dest, 0, true) +} + +func (b *ValueBinder) uintValue(sourceParam string, dest interface{}, bitSize int, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValueFunc(sourceParam) + if value == "" { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + } + return b + } + + return b.uint(sourceParam, value, dest, bitSize) +} + +func (b *ValueBinder) uint(sourceParam string, value string, dest interface{}, bitSize int) *ValueBinder { + n, err := strconv.ParseUint(value, 10, bitSize) + if err != nil { + if bitSize == 0 { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "failed to bind field value to uint", err)) + } else { + b.setError(b.ErrorFunc(sourceParam, []string{value}, fmt.Sprintf("failed to bind field value to uint%v", bitSize), err)) + } + return b + } + + switch d := dest.(type) { + case *uint64: + *d = n + case *uint32: + *d = uint32(n) + case *uint16: + *d = uint16(n) + case *uint8: // byte is alias to uint8 + *d = uint8(n) + case *uint: + *d = uint(n) + } + return b +} + +func (b *ValueBinder) uintsValue(sourceParam string, dest interface{}, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + values := b.ValuesFunc(sourceParam) + if len(values) == 0 { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, values, "required field value is empty", nil)) + } + return b + } + return b.uints(sourceParam, values, dest) +} + +func (b *ValueBinder) uints(sourceParam string, values []string, dest interface{}) *ValueBinder { + switch d := dest.(type) { + case *[]uint64: + tmp := make([]uint64, len(values)) + for i, v := range values { + b.uint(sourceParam, v, &tmp[i], 64) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + case *[]uint32: + tmp := make([]uint32, len(values)) + for i, v := range values { + b.uint(sourceParam, v, &tmp[i], 32) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + case *[]uint16: + tmp := make([]uint16, len(values)) + for i, v := range values { + b.uint(sourceParam, v, &tmp[i], 16) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + case *[]uint8: // byte is alias to uint8 + tmp := make([]uint8, len(values)) + for i, v := range values { + b.uint(sourceParam, v, &tmp[i], 8) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + case *[]uint: + tmp := make([]uint, len(values)) + for i, v := range values { + b.uint(sourceParam, v, &tmp[i], 0) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + } + return b +} + +// Uint64s binds parameter to slice of uint64 +func (b *ValueBinder) Uint64s(sourceParam string, dest *[]uint64) *ValueBinder { + return b.uintsValue(sourceParam, dest, false) +} + +// MustUint64s requires parameter value to exist to be bind to uint64 slice variable. Returns error when value does not exist +func (b *ValueBinder) MustUint64s(sourceParam string, dest *[]uint64) *ValueBinder { + return b.uintsValue(sourceParam, dest, true) +} + +// Uint32s binds parameter to slice of uint32 +func (b *ValueBinder) Uint32s(sourceParam string, dest *[]uint32) *ValueBinder { + return b.uintsValue(sourceParam, dest, false) +} + +// MustUint32s requires parameter value to exist to be bind to uint32 slice variable. Returns error when value does not exist +func (b *ValueBinder) MustUint32s(sourceParam string, dest *[]uint32) *ValueBinder { + return b.uintsValue(sourceParam, dest, true) +} + +// Uint16s binds parameter to slice of uint16 +func (b *ValueBinder) Uint16s(sourceParam string, dest *[]uint16) *ValueBinder { + return b.uintsValue(sourceParam, dest, false) +} + +// MustUint16s requires parameter value to exist to be bind to uint16 slice variable. Returns error when value does not exist +func (b *ValueBinder) MustUint16s(sourceParam string, dest *[]uint16) *ValueBinder { + return b.uintsValue(sourceParam, dest, true) +} + +// Uint8s binds parameter to slice of uint8 +func (b *ValueBinder) Uint8s(sourceParam string, dest *[]uint8) *ValueBinder { + return b.uintsValue(sourceParam, dest, false) +} + +// MustUint8s requires parameter value to exist to be bind to uint8 slice variable. Returns error when value does not exist +func (b *ValueBinder) MustUint8s(sourceParam string, dest *[]uint8) *ValueBinder { + return b.uintsValue(sourceParam, dest, true) +} + +// Uints binds parameter to slice of uint +func (b *ValueBinder) Uints(sourceParam string, dest *[]uint) *ValueBinder { + return b.uintsValue(sourceParam, dest, false) +} + +// MustUints requires parameter value to exist to be bind to uint slice variable. Returns error when value does not exist +func (b *ValueBinder) MustUints(sourceParam string, dest *[]uint) *ValueBinder { + return b.uintsValue(sourceParam, dest, true) +} + +// Bool binds parameter to bool variable +func (b *ValueBinder) Bool(sourceParam string, dest *bool) *ValueBinder { + return b.boolValue(sourceParam, dest, false) +} + +// MustBool requires parameter value to exist to be bind to bool variable. Returns error when value does not exist +func (b *ValueBinder) MustBool(sourceParam string, dest *bool) *ValueBinder { + return b.boolValue(sourceParam, dest, true) +} + +func (b *ValueBinder) boolValue(sourceParam string, dest *bool, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValueFunc(sourceParam) + if value == "" { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + } + return b + } + return b.bool(sourceParam, value, dest) +} + +func (b *ValueBinder) bool(sourceParam string, value string, dest *bool) *ValueBinder { + n, err := strconv.ParseBool(value) + if err != nil { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "failed to bind field value to bool", err)) + return b + } + + *dest = n + return b +} + +func (b *ValueBinder) boolsValue(sourceParam string, dest *[]bool, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + values := b.ValuesFunc(sourceParam) + if len(values) == 0 { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + } + return b + } + return b.bools(sourceParam, values, dest) +} + +func (b *ValueBinder) bools(sourceParam string, values []string, dest *[]bool) *ValueBinder { + tmp := make([]bool, len(values)) + for i, v := range values { + b.bool(sourceParam, v, &tmp[i]) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *dest = tmp + } + return b +} + +// Bools binds parameter values to slice of bool variables +func (b *ValueBinder) Bools(sourceParam string, dest *[]bool) *ValueBinder { + return b.boolsValue(sourceParam, dest, false) +} + +// MustBools requires parameter values to exist to be bind to slice of bool variables. Returns error when values does not exist +func (b *ValueBinder) MustBools(sourceParam string, dest *[]bool) *ValueBinder { + return b.boolsValue(sourceParam, dest, true) +} + +// Float64 binds parameter to float64 variable +func (b *ValueBinder) Float64(sourceParam string, dest *float64) *ValueBinder { + return b.floatValue(sourceParam, dest, 64, false) +} + +// MustFloat64 requires parameter value to exist to be bind to float64 variable. Returns error when value does not exist +func (b *ValueBinder) MustFloat64(sourceParam string, dest *float64) *ValueBinder { + return b.floatValue(sourceParam, dest, 64, true) +} + +// Float32 binds parameter to float32 variable +func (b *ValueBinder) Float32(sourceParam string, dest *float32) *ValueBinder { + return b.floatValue(sourceParam, dest, 32, false) +} + +// MustFloat32 requires parameter value to exist to be bind to float32 variable. Returns error when value does not exist +func (b *ValueBinder) MustFloat32(sourceParam string, dest *float32) *ValueBinder { + return b.floatValue(sourceParam, dest, 32, true) +} + +func (b *ValueBinder) floatValue(sourceParam string, dest interface{}, bitSize int, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValueFunc(sourceParam) + if value == "" { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + } + return b + } + + return b.float(sourceParam, value, dest, bitSize) +} + +func (b *ValueBinder) float(sourceParam string, value string, dest interface{}, bitSize int) *ValueBinder { + n, err := strconv.ParseFloat(value, bitSize) + if err != nil { + b.setError(b.ErrorFunc(sourceParam, []string{value}, fmt.Sprintf("failed to bind field value to float%v", bitSize), err)) + return b + } + + switch d := dest.(type) { + case *float64: + *d = n + case *float32: + *d = float32(n) + } + return b +} + +func (b *ValueBinder) floatsValue(sourceParam string, dest interface{}, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + values := b.ValuesFunc(sourceParam) + if len(values) == 0 { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + } + return b + } + return b.floats(sourceParam, values, dest) +} + +func (b *ValueBinder) floats(sourceParam string, values []string, dest interface{}) *ValueBinder { + switch d := dest.(type) { + case *[]float64: + tmp := make([]float64, len(values)) + for i, v := range values { + b.float(sourceParam, v, &tmp[i], 64) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + case *[]float32: + tmp := make([]float32, len(values)) + for i, v := range values { + b.float(sourceParam, v, &tmp[i], 32) + if b.failFast && b.errors != nil { + return b + } + } + if b.errors == nil { + *d = tmp + } + } + return b +} + +// Float64s binds parameter values to slice of float64 variables +func (b *ValueBinder) Float64s(sourceParam string, dest *[]float64) *ValueBinder { + return b.floatsValue(sourceParam, dest, false) +} + +// MustFloat64s requires parameter values to exist to be bind to slice of float64 variables. Returns error when values does not exist +func (b *ValueBinder) MustFloat64s(sourceParam string, dest *[]float64) *ValueBinder { + return b.floatsValue(sourceParam, dest, true) +} + +// Float32s binds parameter values to slice of float32 variables +func (b *ValueBinder) Float32s(sourceParam string, dest *[]float32) *ValueBinder { + return b.floatsValue(sourceParam, dest, false) +} + +// MustFloat32s requires parameter values to exist to be bind to slice of float32 variables. Returns error when values does not exist +func (b *ValueBinder) MustFloat32s(sourceParam string, dest *[]float32) *ValueBinder { + return b.floatsValue(sourceParam, dest, true) +} + +// Time binds parameter to time.Time variable +func (b *ValueBinder) Time(sourceParam string, dest *time.Time, layout string) *ValueBinder { + return b.time(sourceParam, dest, layout, false) +} + +// MustTime requires parameter value to exist to be bind to time.Time variable. Returns error when value does not exist +func (b *ValueBinder) MustTime(sourceParam string, dest *time.Time, layout string) *ValueBinder { + return b.time(sourceParam, dest, layout, true) +} + +func (b *ValueBinder) time(sourceParam string, dest *time.Time, layout string, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValueFunc(sourceParam) + if value == "" { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "required field value is empty", nil)) + } + return b + } + t, err := time.Parse(layout, value) + if err != nil { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "failed to bind field value to Time", err)) + return b + } + *dest = t + return b +} + +// Times binds parameter values to slice of time.Time variables +func (b *ValueBinder) Times(sourceParam string, dest *[]time.Time, layout string) *ValueBinder { + return b.times(sourceParam, dest, layout, false) +} + +// MustTimes requires parameter values to exist to be bind to slice of time.Time variables. Returns error when values does not exist +func (b *ValueBinder) MustTimes(sourceParam string, dest *[]time.Time, layout string) *ValueBinder { + return b.times(sourceParam, dest, layout, true) +} + +func (b *ValueBinder) times(sourceParam string, dest *[]time.Time, layout string, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + values := b.ValuesFunc(sourceParam) + if len(values) == 0 { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + } + return b + } + + tmp := make([]time.Time, len(values)) + for i, v := range values { + t, err := time.Parse(layout, v) + if err != nil { + b.setError(b.ErrorFunc(sourceParam, []string{v}, "failed to bind field value to Time", err)) + if b.failFast { + return b + } + continue + } + tmp[i] = t + } + if b.errors == nil { + *dest = tmp + } + return b +} + +// Duration binds parameter to time.Duration variable +func (b *ValueBinder) Duration(sourceParam string, dest *time.Duration) *ValueBinder { + return b.duration(sourceParam, dest, false) +} + +// MustDuration requires parameter value to exist to be bind to time.Duration variable. Returns error when value does not exist +func (b *ValueBinder) MustDuration(sourceParam string, dest *time.Duration) *ValueBinder { + return b.duration(sourceParam, dest, true) +} + +func (b *ValueBinder) duration(sourceParam string, dest *time.Duration, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValueFunc(sourceParam) + if value == "" { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "required field value is empty", nil)) + } + return b + } + t, err := time.ParseDuration(value) + if err != nil { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "failed to bind field value to Duration", err)) + return b + } + *dest = t + return b +} + +// Durations binds parameter values to slice of time.Duration variables +func (b *ValueBinder) Durations(sourceParam string, dest *[]time.Duration) *ValueBinder { + return b.durationsValue(sourceParam, dest, false) +} + +// MustDurations requires parameter values to exist to be bind to slice of time.Duration variables. Returns error when values does not exist +func (b *ValueBinder) MustDurations(sourceParam string, dest *[]time.Duration) *ValueBinder { + return b.durationsValue(sourceParam, dest, true) +} + +func (b *ValueBinder) durationsValue(sourceParam string, dest *[]time.Duration, valueMustExist bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + values := b.ValuesFunc(sourceParam) + if len(values) == 0 { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{}, "required field value is empty", nil)) + } + return b + } + return b.durations(sourceParam, values, dest) +} + +func (b *ValueBinder) durations(sourceParam string, values []string, dest *[]time.Duration) *ValueBinder { + tmp := make([]time.Duration, len(values)) + for i, v := range values { + t, err := time.ParseDuration(v) + if err != nil { + b.setError(b.ErrorFunc(sourceParam, []string{v}, "failed to bind field value to Duration", err)) + if b.failFast { + return b + } + continue + } + tmp[i] = t + } + if b.errors == nil { + *dest = tmp + } + return b +} + +// UnixTime binds parameter to time.Time variable (in local Time corresponding to the given Unix time). +// +// Example: 1609180603 bind to 2020-12-28T18:36:43.000000000+00:00 +// +// Note: +// * time.Time{} (param is empty) and time.Unix(0,0) (param = "0") are not equal +func (b *ValueBinder) UnixTime(sourceParam string, dest *time.Time) *ValueBinder { + return b.unixTime(sourceParam, dest, false, false) +} + +// MustUnixTime requires parameter value to exist to be bind to time.Duration variable (in local Time corresponding +// to the given Unix time). Returns error when value does not exist. +// +// Example: 1609180603 bind to 2020-12-28T18:36:43.000000000+00:00 +// +// Note: +// * time.Time{} (param is empty) and time.Unix(0,0) (param = "0") are not equal +func (b *ValueBinder) MustUnixTime(sourceParam string, dest *time.Time) *ValueBinder { + return b.unixTime(sourceParam, dest, true, false) +} + +// UnixTimeNano binds parameter to time.Time variable (in local Time corresponding to the given Unix time in nano second precision). +// +// Example: 1609180603123456789 binds to 2020-12-28T18:36:43.123456789+00:00 +// Example: 1000000000 binds to 1970-01-01T00:00:01.000000000+00:00 +// Example: 999999999 binds to 1970-01-01T00:00:00.999999999+00:00 +// +// Note: +// * time.Time{} (param is empty) and time.Unix(0,0) (param = "0") are not equal +// * Javascript's Number type only has about 53 bits of precision (Number.MAX_SAFE_INTEGER = 9007199254740991). Compare it to 1609180603123456789 in example. +func (b *ValueBinder) UnixTimeNano(sourceParam string, dest *time.Time) *ValueBinder { + return b.unixTime(sourceParam, dest, false, true) +} + +// MustUnixTimeNano requires parameter value to exist to be bind to time.Duration variable (in local Time corresponding +// to the given Unix time value in nano second precision). Returns error when value does not exist. +// +// Example: 1609180603123456789 binds to 2020-12-28T18:36:43.123456789+00:00 +// Example: 1000000000 binds to 1970-01-01T00:00:01.000000000+00:00 +// Example: 999999999 binds to 1970-01-01T00:00:00.999999999+00:00 +// +// Note: +// * time.Time{} (param is empty) and time.Unix(0,0) (param = "0") are not equal +// * Javascript's Number type only has about 53 bits of precision (Number.MAX_SAFE_INTEGER = 9007199254740991). Compare it to 1609180603123456789 in example. +func (b *ValueBinder) MustUnixTimeNano(sourceParam string, dest *time.Time) *ValueBinder { + return b.unixTime(sourceParam, dest, true, true) +} + +func (b *ValueBinder) unixTime(sourceParam string, dest *time.Time, valueMustExist bool, isNano bool) *ValueBinder { + if b.failFast && b.errors != nil { + return b + } + + value := b.ValueFunc(sourceParam) + if value == "" { + if valueMustExist { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "required field value is empty", nil)) + } + return b + } + + n, err := strconv.ParseInt(value, 10, 64) + if err != nil { + b.setError(b.ErrorFunc(sourceParam, []string{value}, "failed to bind field value to Time", err)) + return b + } + + if isNano { + *dest = time.Unix(0, n) + } else { + *dest = time.Unix(n, 0) + } + return b +} |