Speed comparison (v3)

Below you can see a table with speed comparison of 3 parsers:

• bash2json v3.0.0
• bash2json v2.3.0
• jq v1.6

Each parser was tested with 7 different actions using hyperfine with 500 runs each

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
./bash2json-v3 '{ "foo": "bar" }' 'foo'	6.6 ± 0.8	5.9	13.6	1.00
./bash2json-v2.3.0 '{ "foo": "bar" }' 'foo'	12.5 ± 1.4	10.6	28.0	1.89 ± 0.31
echo '{ "foo": "bar" }' | jq-1.6 '.foo'	44.6 ± 2.3	42.1	75.7	6.74 ± 0.85
./bash2json-v3 '{ "foo": { "foo2": "bar" } }' 'foo.foo2' -r	8.5 ± 0.8	7.8	15.7	1.28 ± 0.19
./bash2json-v2.3.0 '{ "foo": { "foo2": "bar" } }' 'foo.foo2' -r	19.0 ± 1.1	17.5	28.5	2.87 ± 0.37
echo '{ "foo": { "foo2": "bar" } }' | jq-1.6 '.foo.foo2' -r	46.4 ± 10.4	38.9	95.5	7.01 ± 1.76
./bash2json-v2.3.0 '{ "foo": [{ "foo": "bar" },{ "foo": "othervalue" }] }' 'foo[0].foo' -r	29.1 ± 1.8	26.3	48.3	4.40 ± 0.57
./bash2json-v3 '{ "foo": [{ "foo": "bar" },{ "foo": "othervalue" }] }' 'foo[0].foo' -r	11.9 ± 0.4	11.2	16.5	1.79 ± 0.21
echo '{ "foo": [{ "foo": "bar" },{ "foo": "othervalue" }] }' | jq-1.6 '.foo[0].foo' -r	44.6 ± 2.1	42.6	73.3	6.74 ± 0.84
./bash2json-v3 '{ "foo": "bar" }' --append 'foo1' 'bar1'	10.1 ± 4.9	6.2	31.3	1.53 ± 0.76
./bash2json-v2.3.0 '{ "foo": "bar" }' --append 'foo1' 'bar1'	14.5 ± 2.0	12.0	26.0	2.18 ± 0.39
echo '{ "foo": "bar" }' | jq-1.6 '. += { "foo1": "bar1" }'	44.9 ± 1.7	43.1	60.7	6.78 ± 0.82
./bash2json-v3 '{ "foo": { "foo1": "bar" } }' --append 'foo.foo2' 'bar1'	9.9 ± 0.7	9.2	22.7	1.50 ± 0.20
./bash2json-v2.3.0 '{ "foo": { "foo1": "bar" } }' --append 'foo.foo2' 'bar1'	22.7 ± 1.3	20.4	35.9	3.43 ± 0.44
echo '{ "foo": { "foo1": "bar" } }' | jq-1.6 '.foo += { "foo2": "bar1" }'	47.4 ± 10.9	40.6	101.5	7.16 ± 1.84
./bash2json-v3 '{ "foo": [{ "foo1": "bar" }] }' --append 'foo[]' 'bar1'	10.2 ± 1.0	9.2	16.7	1.54 ± 0.24
./bash2json-v2.3.0 '{ "foo": [{ "foo1": "bar" }] }' --append 'foo[]' 'bar1'	21.1 ± 2.5	18.1	47.6	3.19 ± 0.53
echo '{ "foo": [{ "foo1": "bar" }] }' | jq-1.6 '.foo += [ "bar1" ]'	43.9 ± 2.2	40.9	64.0	6.64 ± 0.83
./bash2json-v3 '{ "foo": [{ "foo1": "bar" },{ "foo2" :"bar" }] }' --append 'foo[0].foo' 'bar1'	18.9 ± 7.7	14.1	56.1	2.86 ± 1.21
./bash2json-v2.3.0 '{ "foo": [{ "foo1": "bar" },{ "foo2" :"bar" }] }' --append 'foo[0].foo' 'bar1'	39.6 ± 2.5	35.7	63.7	5.98 ± 0.78
echo '{ "foo": [{ "foo1": "bar" },{ "foo2" :"bar" }] }' | jq-1.6 '.foo[0] += { "foo": "bar1" }'	45.3 ± 2.4	42.2	60.7	6.85 ± 0.86

Sourced command speed comparison

2 versions of bash2json are tested (v3 and v2.3.0). Both files are sourced and then executed as function.

v2.3.0

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
bash2json '{ "foo": "bar" }' 'foo'	7.4 ± 0.6	6.2	12.3	1.00
bash2json '{ "foo": { "foo2": "bar" } }' 'foo.foo2' -r	13.2 ± 1.0	11.3	26.0	1.79 ± 0.20
bash2json '{ "foo": [{ "foo": "bar" },{ "foo": "othervalue" }] }' 'foo[0].foo' -r	25.6 ± 8.0	19.9	58.0	3.47 ± 1.11
bash2json '{ "foo": "bar" }' --append 'foo1' 'bar1'	8.0 ± 1.1	6.6	19.6	1.08 ± 0.17
bash2json '{ "foo": { "foo1": "bar" } }' --append 'foo.foo2' 'bar1'	17.2 ± 1.2	15.4	24.7	2.32 ± 0.24
bash2json '{ "foo": [{ "foo1": "bar" }] }' --append 'foo[]' 'bar1'	15.4 ± 1.6	14.1	33.4	2.08 ± 0.28
bash2json '{ "foo": [{ "foo1": "bar" },{ "foo2" :"bar" }] }' --append 'foo[0].foo' 'bar1'	33.0 ± 1.4	29.9	44.8	4.48 ± 0.41
bash2json '{ "foo": "bar" }' --from-json --output="arr"	12.0 ± 5.9	8.2	30.6	1.63 ± 0.81
bash2json '{ "foo": "bar", "foo1": { "foo2": "bar" } }' --from-json --output="arr"	19.1 ± 1.8	17.2	32.6	2.59 ± 0.32
bash2json '["foo","bar"]' --from-json	9.6 ± 0.8	8.5	19.5	1.30 ± 0.16

v3.0.0

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
bash2json '{ "foo": "bar" }' 'foo'	1.8 ± 0.2	1.3	3.9	1.00
bash2json '{ "foo": { "foo2": "bar" } }' 'foo.foo2' -r	5.4 ± 3.7	2.8	16.4	3.05 ± 2.10
bash2json '{ "foo": [{ "foo": "bar" },{ "foo": "othervalue" }] }' 'foo[0].foo' -r	6.7 ± 0.8	6.1	16.1	3.78 ± 0.67
bash2json '{ "foo": "bar" }' --append 'foo1' 'bar1'	2.5 ± 0.6	2.0	7.2	1.42 ± 0.38
bash2json '{ "foo": { "foo1": "bar" } }' --append 'foo.foo2' 'bar1'	5.1 ± 1.1	4.0	15.8	2.88 ± 0.74
bash2json '{ "foo": [{ "foo1": "bar" }] }' --append 'foo[]' 'bar1'	4.8 ± 0.4	4.0	8.3	2.71 ± 0.42
bash2json '{ "foo": [{ "foo1": "bar" },{ "foo2" :"bar" }] }' --append 'foo[0].foo' 'bar1'	9.9 ± 0.9	8.7	20.7	5.55 ± 0.90
bash2json '{ "foo": "bar" }' --from-json --output="arr"	3.5 ± 0.6	2.9	13.2	1.95 ± 0.41
bash2json '{ "foo": "bar", "foo1": { "foo2": "bar" } }' --from-json --output="arr"	7.5 ± 1.1	6.3	22.1	4.20 ± 0.81
bash2json '["foo","bar"]' --from-json	3.3 ± 0.6	2.7	9.5	1.88 ± 0.44