jackson-core

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Allow registering "string-converter hook", for low-level coercion or String mutation

1

One common wish for processing (at various levels) is to be able to modify incoming String values, to either: 1. Modify Strings themselves (trim whitespace, change casing etc), or 2....

cowtowncoder

Skip RS CTRL-CHAR to support JSON Text Sequences

3

Currently jackson supports reading newline-delimited json such as [JSON Lines](http://jsonlines.org/) and [NDJSON](https://github.com/ndjson/ndjson-spec), see https://github.com/FasterXML/jackson-databind/issues/1304. There is a proposed standard RFC7464 call [JSON Text Sequences](https://tools.ietf.org/html/rfc7464), it's similar to newline-delimited json by...

quaff

See https://github.com/FasterXML/jackson-dataformats-binary/pull/65 for background: it looks like UTF-8 json parser is not checking for case of 3-byte character being surrogate: I think it should. (although there is still the whole...

cowtowncoder

Poor support for UTF-8 without CANONICALIZE_FIELD_NAMES and non UTF-8 encoded byte payloads

1

In [ByteSourceJsonBootstrapper#L247](https://github.com/FasterXML/jackson-core/blob/master/src/main/java/com/fasterxml/jackson/core/json/ByteSourceJsonBootstrapper.java#L247): ``` public JsonParser constructParser(ObjectReadContext readCtxt, int streamReadFeatures, int formatReadFeatures, ByteQuadsCanonicalizer rootByteSymbols, CharsToNameCanonicalizer rootCharSymbols, int factoryFeatures) throws IOException { JsonEncoding enc = detectEncoding(); if (enc == JsonEncoding.UTF8) { /*...

fabienrenaud

JsonParser.getCurrentLocation is not updated for `DataInput` input

3

### Issue Using a `JsonParser` instantiated via `JsonParser.createParser(DataInput)` does not update `JsonLocation` values returned by `JsonParser.getCurrentLocation` (everything defaults to -1). Switching to `JsonParser.createParser(InputStream)` with the same input object populates the...

fabienrenaud

Can't tell non-blocking parser what charset to use for decoding input

3

I'm using Jackson's non-blocking parser to implement a `BodySubscriber` for use with Java's non-blocking HTTP client. The parser is created by `JsonFactory#createNonBlockingByteArrayParser()` using the factory instance associated with the `ObjectMapper`...

mizosoft

UTF8JsonGenerator writes supplementary characters as a surrogate pair -- should use 4-byte encoding

16

When outputting a string value containing a supplementary Unicode code point, UTF8JsonGenerator is encoding the supplementary character as a pair of `\uNNNN` escapes representing the two halves of the surrogate...

ianroberts

Looks like no bounds check are verified when buffering digits of integer numbers by `UTF8DataInputJsonParser`, and thereby long enough integer numbers (longer than current empty buffer size, or at very...

cowtowncoder

With 3.0 we can start specializing generators (and parsers too) more, due to full immutability of feature flags. One thing that should allow minor performance optimization is separating "non-vanilla" feature...

cowtowncoder

Include forward slash ('/') as character to escape by default in String values

2

Jackson 2.x only escapes minimum set of characters, as defined by JSON specification. This does not include forward slash character ('/'). But while legal, it turns out that more often...

cowtowncoder