285 lines
8.9 KiB
Rust
285 lines
8.9 KiB
Rust
//! Validators for `contentMediaType` and `contentEncoding` keywords.
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use crate::{
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compilation::{context::CompilationContext, JSONSchema},
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error::{error, no_error, CompilationError, ErrorIterator, ValidationError},
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keywords::CompilationResult,
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validator::Validate,
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};
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use serde_json::{from_str, Map, Value};
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/// Validator for `contentMediaType` keyword.
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pub(crate) struct ContentMediaTypeValidator {
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media_type: String,
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func: for<'a> fn(&'a Value, &str) -> ErrorIterator<'a>,
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}
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impl ContentMediaTypeValidator {
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#[inline]
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pub(crate) fn compile(
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media_type: &str,
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func: for<'a> fn(&'a Value, &str) -> ErrorIterator<'a>,
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) -> CompilationResult {
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Ok(Box::new(ContentMediaTypeValidator {
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media_type: media_type.to_string(),
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func,
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}))
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}
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}
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/// Validator delegates validation to the stored function.
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impl Validate for ContentMediaTypeValidator {
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#[inline]
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fn is_valid_string(&self, _: &JSONSchema, instance: &Value, instance_value: &str) -> bool {
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(self.func)(instance, instance_value).next().is_none()
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}
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#[inline]
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fn is_valid(&self, schema: &JSONSchema, instance: &Value) -> bool {
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if let Value::String(instance_value) = instance {
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self.is_valid_string(schema, instance, instance_value)
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} else {
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true
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}
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}
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#[inline]
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fn validate_string<'a>(
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&self,
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_: &'a JSONSchema,
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instance: &'a Value,
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instance_value: &'a str,
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) -> ErrorIterator<'a> {
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(self.func)(instance, instance_value)
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}
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#[inline]
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fn validate<'a>(&self, schema: &'a JSONSchema, instance: &'a Value) -> ErrorIterator<'a> {
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if let Value::String(instance_value) = instance {
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self.validate_string(schema, instance, instance_value)
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} else {
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no_error()
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}
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}
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}
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impl ToString for ContentMediaTypeValidator {
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fn to_string(&self) -> String {
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format!("contentMediaType: {}", self.media_type)
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}
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}
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/// Validator for `contentEncoding` keyword.
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pub(crate) struct ContentEncodingValidator {
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encoding: String,
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func: for<'a> fn(&'a Value, &str) -> ErrorIterator<'a>,
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}
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impl ContentEncodingValidator {
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#[inline]
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pub(crate) fn compile(
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encoding: &str,
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func: for<'a> fn(&'a Value, &str) -> ErrorIterator<'a>,
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) -> CompilationResult {
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Ok(Box::new(ContentEncodingValidator {
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encoding: encoding.to_string(),
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func,
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}))
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}
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}
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impl Validate for ContentEncodingValidator {
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#[inline]
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fn is_valid_string(&self, _: &JSONSchema, instance: &Value, instance_value: &str) -> bool {
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(self.func)(instance, instance_value).next().is_none()
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}
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#[inline]
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fn is_valid(&self, schema: &JSONSchema, instance: &Value) -> bool {
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if let Value::String(instance_value) = instance {
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self.is_valid_string(schema, instance, instance_value)
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} else {
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true
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}
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}
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#[inline]
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fn validate_string<'a>(
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&self,
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_: &'a JSONSchema,
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instance: &'a Value,
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instance_value: &'a str,
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) -> ErrorIterator<'a> {
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(self.func)(instance, instance_value)
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}
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#[inline]
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fn validate<'a>(&self, schema: &'a JSONSchema, instance: &'a Value) -> ErrorIterator<'a> {
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if let Value::String(instance_value) = instance {
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self.validate_string(schema, instance, instance_value)
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} else {
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no_error()
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}
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}
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}
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impl ToString for ContentEncodingValidator {
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fn to_string(&self) -> String {
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format!("contentEncoding: {}", self.encoding)
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}
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}
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/// Combined validator for both `contentEncoding` and `contentMediaType` keywords.
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pub(crate) struct ContentMediaTypeAndEncodingValidator {
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media_type: String,
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encoding: String,
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func: for<'a> fn(&'a Value, &str) -> ErrorIterator<'a>,
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converter: for<'a> fn(&'a Value, &str) -> Result<String, ValidationError<'a>>,
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}
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impl ContentMediaTypeAndEncodingValidator {
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#[inline]
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pub(crate) fn compile(
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media_type: &str,
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encoding: &str,
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func: for<'a> fn(&'a Value, &str) -> ErrorIterator<'a>,
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converter: for<'a> fn(&'a Value, &str) -> Result<String, ValidationError<'a>>,
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) -> CompilationResult {
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Ok(Box::new(ContentMediaTypeAndEncodingValidator {
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media_type: media_type.to_string(),
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encoding: encoding.to_string(),
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func,
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converter,
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}))
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}
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}
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/// Decode the input value & check media type
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impl Validate for ContentMediaTypeAndEncodingValidator {
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#[inline]
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fn is_valid_string(&self, _: &JSONSchema, instance: &Value, instance_value: &str) -> bool {
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match (self.converter)(instance, instance_value) {
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Ok(converted) => (self.func)(instance, &converted).next().is_none(),
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Err(_) => false,
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}
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}
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#[inline]
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fn is_valid(&self, schema: &JSONSchema, instance: &Value) -> bool {
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if let Value::String(instance_value) = instance {
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self.is_valid_string(schema, instance, instance_value)
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} else {
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true
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}
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}
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#[inline]
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fn validate_string<'a>(
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&self,
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_: &'a JSONSchema,
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instance: &'a Value,
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instance_value: &'a str,
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) -> ErrorIterator<'a> {
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// TODO. Avoid explicit `error` call. It might be done if `converter` will
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// return a proper type
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match (self.converter)(instance, instance_value) {
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Ok(converted) => {
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let errors: Vec<_> = (self.func)(instance, &converted).collect();
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Box::new(errors.into_iter())
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}
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Err(e) => error(e),
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}
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}
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#[inline]
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fn validate<'a>(&self, schema: &'a JSONSchema, instance: &'a Value) -> ErrorIterator<'a> {
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if let Value::String(instance_value) = instance {
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self.validate_string(schema, instance, instance_value)
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} else {
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no_error()
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}
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}
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}
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impl ToString for ContentMediaTypeAndEncodingValidator {
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fn to_string(&self) -> String {
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format!(
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"{{contentMediaType: {}, contentEncoding: {}}}",
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self.media_type, self.encoding
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)
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}
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}
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pub(crate) fn is_json<'a>(instance: &'a Value, instance_string: &str) -> ErrorIterator<'a> {
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if from_str::<Value>(instance_string).is_err() {
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return error(ValidationError::format(instance, "application/json"));
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}
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no_error()
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}
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pub(crate) fn is_base64<'a>(instance: &'a Value, instance_string: &str) -> ErrorIterator<'a> {
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if base64::decode(instance_string).is_err() {
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return error(ValidationError::format(instance, "base64"));
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}
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no_error()
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}
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pub(crate) fn from_base64<'a>(
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instance: &'a Value,
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instance_string: &str,
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) -> Result<String, ValidationError<'a>> {
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match base64::decode(instance_string) {
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Ok(value) => Ok(String::from_utf8(value)?),
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Err(_) => Err(ValidationError::format(instance, "base64")),
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}
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}
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#[inline]
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pub(crate) fn compile_media_type(
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schema: &Map<String, Value>,
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subschema: &Value,
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_: &CompilationContext,
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) -> Option<CompilationResult> {
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match subschema {
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Value::String(media_type) => {
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let func = match media_type.as_str() {
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"application/json" => is_json,
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_ => return None,
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};
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if let Some(content_encoding) = schema.get("contentEncoding") {
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match content_encoding {
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Value::String(content_encoding) => {
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let converter = match content_encoding.as_str() {
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"base64" => from_base64,
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_ => return None,
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};
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Some(ContentMediaTypeAndEncodingValidator::compile(
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media_type,
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content_encoding,
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func,
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converter,
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))
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}
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_ => Some(Err(CompilationError::SchemaError)),
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}
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} else {
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Some(ContentMediaTypeValidator::compile(media_type, func))
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}
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}
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_ => Some(Err(CompilationError::SchemaError)),
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}
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}
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#[inline]
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pub(crate) fn compile_content_encoding(
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schema: &Map<String, Value>,
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subschema: &Value,
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_: &CompilationContext,
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) -> Option<CompilationResult> {
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// Performed during media type validation
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if schema.get("contentMediaType").is_some() {
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// TODO. what if media type is not supported?
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return None;
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}
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match subschema {
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Value::String(content_encoding) => {
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let func = match content_encoding.as_str() {
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"base64" => is_base64,
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_ => return None,
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};
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Some(ContentEncodingValidator::compile(content_encoding, func))
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}
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_ => Some(Err(CompilationError::SchemaError)),
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}
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}
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