2.0.1

This release corrects the behaviour of several command-line flags.

What's Changed

• Fix --null-input flag by @null-dev in #241
• Fix --slurpfile flag by @null-dev in #242
• Implement --from-file flag 0bad031

New Contributors

• @null-dev made their first contribution in #241

Full Changelog: v2.0.0...v2.0.1

2.0

jaq is a jq clone focussed on correctness, speed, and simplicity.

Compared to jaq 1.x, jaq 2.0 adds support for many features of the jq programming language.
As a result, jaq can now run jqjq, a jq interpreter written in jq itself, which has a code base of more than 3000 lines of jq code!

The largest single change in jaq 2.0 is support for jq's module system, allowing jaq to import module and data files (alpha).
Furthermore, the libraries underlying jaq are now agnostic towards their data format. This makes jaq a candidate for embedding it as language interpreter into other applications for processing non-JSON data.

Under the hood, jaq's compiler component has been completely rewritten to allow for the changes in jaq 2.0.

New syntax:

• label...break, //=, nested definitions alpha
• foreach/3 beta
• Destructuring gamma

New command-line parameters:

• --library-path / -L alpha
• --args delta
• --sort-keys / -S

I would like to thank all people that have contributed to this release, in particular @wader for extensively testing jaq, contributing features and adapting jqjq to make it work with jaq. It has been a joy working with you!

My work on jaq since version 1.4 has been sponsored by the NLnet foundation, to whom I would like to express my deep gratitude for letting me live my dream.

2.0-epsilon

This release improves the performance of many function calls #226.
Furthermore, it allows passing non-UTF-8 file paths as command-line options #234 and improves compatibility for command-line options in general, in particular around -f and --args.
Finally, it now interprets search paths via -L as relative to the current working directory, improving compatibility with jq #228.

This is hopefully the last release before jaq 2.0. I'm aiming for a small number (ε) of changes between this release and the final version.

Full Changelog: v2.0.0-delta...v2.0.0-epsilon

2.0-delta

New features

• Support --args #224
• Add missing gamma/0 math function, thanks to @wader #222

Improvements

• Use regex-lite instead of regex 0840b1b: This can drastically decrease the compile time of regexes, at the cost of increasing regex execution time. This also increases the MSRV (minimal supported Rust version) for jaq, jaq-std, and jaq-json to 1.65.
• Improve compiler complexity #223

Bug fixes

All following bugs were detected by @wader, who has relentlessly worked with me on getting jqjq to work with jaq (#216). My heartfelt thanks go out to you, @wader!

• Correct tail recursion optimisation (TCO) #223
• Correct destructuring behaviour 4560c86
• Correct empty regex behaviour #221

Full Changelog: v2.0.0-gamma...v2.0.0-delta

2.0 gamma

This release adds support for patterns in variable bindings, also known as destructuring.
Furthermore, this release more lazily evaluates the right-hand side of concatenation (,) #220.

Finally, rounding functions now actually round to integer values, thanks to @null-dev #219.

Full Changelog: v2.0.0-beta...v2.0.0-gamma

2.0 beta

The highlight of this release likely is the comeback of foreach/3 840aa77. I removed this in jaq 0.9.0 because I was not able to implement foreach/2 and foreach/3 without duplicating lots of code. In the meantime, however, I found a nice way to implement all of foreach/3, foreach/2, and reduce/2 using the same code.

As a consequence, this release removes for/2 f44a224. The addition of foreach/3 would have made it logical to also add for/3, but unfortunately, for/3 can only be implemented in a quite awkward way. Because for/2 was a jaq-only experiment anyway, it felt better to remove it. This change also increases compatibility with jq, because it allows using for as function name in both jq and jaq.

This release now short-circuits on errors in try ... catch ... c83749a. Previously, try f catch g would run g for all errors produced by f, whereas now, it stops after the first error.
As a result of this, jaq now terminates for all examples in the jq manual, meaning that jaq --run-tests man.test runs the whole test suite generated from the manual without "getting stuck". (jaq passes 187 out of 227 tests in the current man.test.)

New functions

• trim/0, ltrim/0 and rtrim/0, thanks to @wader #212
• stderr/0 aa2e2d1
• debug/1 5a30c4b
• skip/2 1fa88d2

Smaller changes

• Expand ~ and $ORIGIN at the start of search paths c3f9259
• Correct printing of UTF-8 encoded characters in strings #209
• More consistent date formatting #214
• Omit clones in .[f] |= g for higher performance 0eaa0f0
• Custom value types now must implement Default ad74938
• Change name format of released binaries #211

New Contributors

• @wader made their first contribution in #212

Full Changelog: v2.0.0-alpha.1...v2.0.0-beta

2.0 alpha.1

This release corrects the handling of search paths that contain more than one element in its array. For example:

include "path" {search: ["foo", "bar"]};

Full Changelog: v2.0.0-alpha...v2.0.0-alpha.1

2.0 alpha

This release brings many new features to jaq:

• Module & data import: You can now include and import modules like in jq with include "path"; or import "path" as mod;, as well as import data (JSON) files with import "path" as $data;. Each import/include directive can be followed by (optional) metadata, of which the search attribute is considered.
• label...break expressions: label $x | f | ., break $x returns at most one output of f.
• //= operator: thanks to @bb010g #142!
• Nested definitions: You can now put definitions into any subterm, e.g. 1 + def a: 2; a is now valid.
• (l // r) |= f can now be executed 2daf986.

Under the hood, the jaq compiler has been completely rewritten to allow for these changes.
Furthermore, the API has seen a complete overhaul, hopefully making it easier to use #188:

• jaq-core now handles parsing, compilation, and execution.
• jaq-std now includes all standard library filters, both implemented by definition and as native functions.
• jaq-json implements JSON support for jaq.

As a result, jaq-core and jaq-std are completely agnostic towards their data format. This makes jaq a good choice also for processing non-JSON data.

In particular, feedback for the new API is solicited.

Full Changelog: v1.6.0...v2.0.0-alpha

1.6

This version includes a completely rewritten parser which massively increases speed and decreases build time, see #196.
Furthermore, it allows using keywords as object keys (e.g. {if: 1}.if).

This is most likely the last stable release before jaq 2.0, which will bring support for label...break and modules.

Smaller Changes

• Support building on armv6, thanks to @tranzystorekk #193
• Use chrono instead of time to make jaq build on Rust 1.80 #199
• Update hifijson to correctly handle control characters in strings (01mf02/hifijson#3)

New Contributors

• @tranzystorekk made their first contribution in #193

Full Changelog: v1.5.1...v1.6.0

1.5.1

This release reintroduces the @base64d filter that was accidentally removed in 1.5 (#192).
Furthermore, jaq now respects the NO_COLOR environment variable (#189).

Full Changelog: v1.5.0...v1.5.1