128 lines
3.8 KiB
Markdown
128 lines
3.8 KiB
Markdown
<!-- Generated with Stardoc: http://skydoc.bazel.build -->
|
|
|
|
Public API for jq
|
|
|
|
<a id="jq"></a>
|
|
|
|
## jq
|
|
|
|
<pre>
|
|
jq(<a href="#jq-name">name</a>, <a href="#jq-srcs">srcs</a>, <a href="#jq-filter">filter</a>, <a href="#jq-filter_file">filter_file</a>, <a href="#jq-args">args</a>, <a href="#jq-out">out</a>, <a href="#jq-kwargs">kwargs</a>)
|
|
</pre>
|
|
|
|
Invoke jq with a filter on a set of json input files.
|
|
|
|
For jq documentation, see https://stedolan.github.io/jq/.
|
|
|
|
To use this rule you must register the jq toolchain in your WORKSPACE:
|
|
|
|
```starlark
|
|
load("@aspect_bazel_lib//lib:repositories.bzl", "register_jq_toolchains")
|
|
|
|
register_jq_toolchains()
|
|
```
|
|
|
|
Usage examples:
|
|
|
|
```starlark
|
|
load("@aspect_bazel_lib//lib:jq.bzl", "jq")
|
|
|
|
# Create a new file bazel-out/.../no_srcs.json
|
|
jq(
|
|
name = "no_srcs",
|
|
srcs = [],
|
|
filter = ".name = "Alice"",
|
|
)
|
|
|
|
# Remove fields from package.json.
|
|
# Writes to bazel-out/.../package.json which means you must refer to this as ":no_dev_deps"
|
|
# since Bazel doesn't allow a label for the output file that collides with the input file.
|
|
jq(
|
|
name = "no_dev_deps",
|
|
srcs = ["package.json"],
|
|
filter = "del(.devDependencies)",
|
|
)
|
|
|
|
# Merge bar.json on top of foo.json, producing foobar.json
|
|
jq(
|
|
name = "merged",
|
|
srcs = ["foo.json", "bar.json"],
|
|
filter = ".[0] * .[1]",
|
|
args = ["--slurp"],
|
|
out = "foobar.json",
|
|
)
|
|
|
|
# Long filters can be split over several lines with comments
|
|
jq(
|
|
name = "complex",
|
|
srcs = ["a.json", "b.json"],
|
|
filter = """
|
|
.[0] as $a
|
|
# Take select fields from b.json
|
|
| (.[1] | {foo, bar, tags}) as $b
|
|
# Merge b onto a
|
|
| ($a * $b)
|
|
# Combine 'tags' array from both
|
|
| .tags = ($a.tags + $b.tags)
|
|
# Add new field
|
|
+ {\"aspect_is_cool\": true}
|
|
""",
|
|
args = ["--slurp"],
|
|
)
|
|
|
|
# Load filter from a file
|
|
jq(
|
|
name = "merged",
|
|
srcs = ["foo.json", "bar.json"],
|
|
filter_file = "filter.txt",
|
|
args = ["--slurp"],
|
|
out = "foobar.json",
|
|
)
|
|
|
|
# Convert genquery output to json
|
|
genquery(
|
|
name = "deps",
|
|
expression = "deps(//some:target)",
|
|
scope = ["//some:target"],
|
|
)
|
|
|
|
jq(
|
|
name = "deps_json",
|
|
srcs = [":deps"],
|
|
args = [
|
|
"--raw-input",
|
|
"--slurp",
|
|
],
|
|
filter = "{ deps: split("\n") | map(select(. | length > 0)) }",
|
|
)
|
|
|
|
# With --stamp, causes properties to be replaced by version control info.
|
|
jq(
|
|
name = "stamped",
|
|
srcs = ["package.json"],
|
|
filter = "|".join([
|
|
# Don't directly reference $STAMP as it's only set when stamping
|
|
# This 'as' syntax results in $stamp being null in unstamped builds.
|
|
"$ARGS.named.STAMP as $stamp",
|
|
# Provide a default using the "alternative operator" in case $stamp is null.
|
|
".version = ($stamp.BUILD_EMBED_LABEL // "<unstamped>")",
|
|
]),
|
|
)
|
|
```
|
|
|
|
|
|
**PARAMETERS**
|
|
|
|
|
|
| Name | Description | Default Value |
|
|
| :------------- | :------------- | :------------- |
|
|
| <a id="jq-name"></a>name | Name of the rule | none |
|
|
| <a id="jq-srcs"></a>srcs | List of input files. May be empty. | none |
|
|
| <a id="jq-filter"></a>filter | Filter expression (https://stedolan.github.io/jq/manual/#Basicfilters). Subject to stamp variable replacements, see [Stamping](./stamping.md). When stamping is enabled, a variable named "STAMP" will be available in the filter.<br><br>Be careful to write the filter so that it handles unstamped builds, as in the example above. | <code>None</code> |
|
|
| <a id="jq-filter_file"></a>filter_file | File containing filter expression (alternative to <code>filter</code>) | <code>None</code> |
|
|
| <a id="jq-args"></a>args | Additional args to pass to jq | <code>[]</code> |
|
|
| <a id="jq-out"></a>out | Name of the output json file; defaults to the rule name plus ".json" | <code>None</code> |
|
|
| <a id="jq-kwargs"></a>kwargs | Other common named parameters such as <code>tags</code> or <code>visibility</code> | none |
|
|
|
|
|