jkc

JSON Key Counter

JSON Key counter is a command line utility that recursively walks specified directories to count unique key paths found in *.json files.

Features

1. Specify one or more filenames or directories for jkc to recursively descend into
2. Directories are walked recursively and all *.json files are scanned
3. Array elements are rolled up into [*]
4. Keys may be excluded to reduce noise with -v key flag
5. IDs (UUID and PushIds) may be rolled up with the -i flag which reduces them to <id>
6. Partial keys can be ignored with the -p flag
7. The type of each key is reported (string, number, boolean, unknown). Objects and arrays are flattened or rolled up.
8. Reports with directory crawled may be printed with -csv or -tsv flags.

Usage

USAGE:
  jkc <filename | dir> [<filename | dir> ...]
  -csv      output in CSV format
  -i        skip keys that looks like push ids or uuids
  -p value  skip "key" with this substring (invert match)
  -tsv      output in TSV format
  -v value  skip this "key" (invert match)```

$ jkc -i -v type testdata
pets[*].<id>.animal.name  string      2
pets[*].<id>.animal.type  string      2
pets[*].<id>.type         string      2
pets[*].bark              boolean(*)  6
pets[*].meow              boolean     1
pets[*].name              string      7
pets[*].speak             boolean     3
pets[*].type              string(*)   7

Notes

• You may skip more than one key: jkc -v input -v output dir1 dir2 dir3
• If a type ends with (*), it means that the field may have more than one type.