library.md

Translating JSON into javascript with js-dot-path.awk

Taking inspiration from gron, JSON.awk can be used to transform JSON into javascript using the callback library file js-dot-path.awk. It will output javascript identical to gron's own, bar syntax coloring.

This library is not a full replacement for gron, which can can do more things. Notably, gron can "ungron" javascript into JSON, and can translate a "JSON stream", which is a sequence of multiple JSON texts in a single file.

Usage

awk -f lib/js-dot-path.awk -f JSON.awk -v STREAM=0 [JS_CONTAINER] FILE.json...

JS_CONTAINER: -v _JS_VAR="json" [-v _JS_VAR_VAR="file"]

_JS_VAR is the name of the javascript root container variable. Default: json.

_JS_VAR_VAR is the name of an array rooted under json. Default: file.

Each element of file corresponds to an input file. Set _JS_VAR_VAR="null" to omit file and root all javascript directly under json. If you are passing JSON.awk multiple files, you almost always will want to leave _JS_VAR_VAR unset or set it to something different than "null".

Examples

# echo '[1,{},2]' | awk -f lib/js-dot-path.awk -f JSON.awk -v _JS_VAR_VAR="null" -v STREAM=0 -
json = [];
json[0] = 1;
json[1] = {};
json[2] = 2;

# echo '[1,{},2]' | awk -f lib/js-dot-path.awk -f JSON.awk -v STREAM=0 -
json = {};
json.file = [];
json.file[0] = [];
json.file[0][0] = 1;
json.file[0][1] = {};
json.file[0][2] = 2;

# echo '[1,{},2]' | awk -f lib/js-dot-path.awk -f JSON.awk -v STREAM=0 lib/test-js-dot-path/testdata/dl-jsontest.json -
json = {};
json.file = [];
json.file[0] = {};
json.file[0]["X-Cloud-Trace-Context"] = "f9ce477415da1f547f1dc3f186e433df/17989231600162709915";
json.file[0].Accept = "*/*";
json.file[0]["User-Agent"] = "curl/7.64.0";
json.file[0].Host = "headers.jsontest.com";
json.file[1] = [];
json.file[1][0] = 1;
json.file[1][1] = {};
json.file[1][2] = 2;

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