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Commite8e87f2

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Add@dig modifier for recursive descent searches
This commit adds the "@dig" modifier, which allows for searchingfor values in deep or arbitrarily nested json documentsFor example, using the following json:```{ "something": { "anything": { "abcdefg": { "finally": { "important": { "secret": "password" } } } } }}``````@dig:secret -> ["password"]```See#130
1 parent8d2c36f commite8e87f2

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2 files changed

+124
-20
lines changed

2 files changed

+124
-20
lines changed

‎gjson.go‎

Lines changed: 59 additions & 20 deletions
Original file line numberDiff line numberDiff line change
@@ -2754,6 +2754,7 @@ func execModifier(json, path string) (pathOut, res string, ok bool) {
27542754
varparsedArgsbool
27552755
switchpathOut[0] {
27562756
case'{','[','"':
2757+
// json arg
27572758
res:=Parse(pathOut)
27582759
ifres.Exists() {
27592760
args=squash(pathOut)
@@ -2762,14 +2763,20 @@ func execModifier(json, path string) (pathOut, res string, ok bool) {
27622763
}
27632764
}
27642765
if!parsedArgs {
2765-
idx:=strings.IndexByte(pathOut,'|')
2766-
ifidx==-1 {
2767-
args=pathOut
2768-
pathOut=""
2769-
}else {
2770-
args=pathOut[:idx]
2771-
pathOut=pathOut[idx:]
2766+
// simple arg
2767+
i:=0
2768+
for ;i<len(pathOut);i++ {
2769+
ifpathOut[i]=='|' {
2770+
break
2771+
}
2772+
switchpathOut[i] {
2773+
case'{','[','"','(':
2774+
s:=squash(pathOut[i:])
2775+
i+=len(s)-1
2776+
}
27722777
}
2778+
args=pathOut[:i]
2779+
pathOut=pathOut[i:]
27732780
}
27742781
}
27752782
returnpathOut,fn(json,args),true
@@ -2789,19 +2796,24 @@ func unwrap(json string) string {
27892796
// DisableModifiers will disable the modifier syntax
27902797
varDisableModifiers=false
27912798

2792-
varmodifiers=map[string]func(json,argstring)string{
2793-
"pretty":modPretty,
2794-
"ugly":modUgly,
2795-
"reverse":modReverse,
2796-
"this":modThis,
2797-
"flatten":modFlatten,
2798-
"join":modJoin,
2799-
"valid":modValid,
2800-
"keys":modKeys,
2801-
"values":modValues,
2802-
"tostr":modToStr,
2803-
"fromstr":modFromStr,
2804-
"group":modGroup,
2799+
varmodifiersmap[string]func(json,argstring)string
2800+
2801+
funcinit() {
2802+
modifiers=map[string]func(json,argstring)string{
2803+
"pretty":modPretty,
2804+
"ugly":modUgly,
2805+
"reverse":modReverse,
2806+
"this":modThis,
2807+
"flatten":modFlatten,
2808+
"join":modJoin,
2809+
"valid":modValid,
2810+
"keys":modKeys,
2811+
"values":modValues,
2812+
"tostr":modToStr,
2813+
"fromstr":modFromStr,
2814+
"group":modGroup,
2815+
"dig":modDig,
2816+
}
28052817
}
28062818

28072819
// AddModifier binds a custom modifier command to the GJSON syntax.
@@ -3435,3 +3447,30 @@ func escapeComp(comp string) string {
34353447
}
34363448
returncomp
34373449
}
3450+
3451+
funcparseRecursiveDescent(all []Result,parentResult,pathstring) []Result {
3452+
ifres:=parent.Get(path);res.Exists() {
3453+
all=append(all,res)
3454+
}
3455+
ifparent.IsArray()||parent.IsObject() {
3456+
parent.ForEach(func(_,valResult)bool {
3457+
all=parseRecursiveDescent(all,val,path)
3458+
returntrue
3459+
})
3460+
}
3461+
returnall
3462+
}
3463+
3464+
funcmodDig(json,argstring)string {
3465+
all:=parseRecursiveDescent(nil,Parse(json),arg)
3466+
varout []byte
3467+
out=append(out,'[')
3468+
fori,res:=rangeall {
3469+
ifi>0 {
3470+
out=append(out,',')
3471+
}
3472+
out=append(out,res.Raw...)
3473+
}
3474+
out=append(out,']')
3475+
returnstring(out)
3476+
}

‎gjson_test.go‎

Lines changed: 65 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -2636,3 +2636,68 @@ func TestIssue301(t *testing.T) {
26362636
assert(t,Get(json,`fav\.movie.[1]`).String()=="[]")
26372637

26382638
}
2639+
2640+
funcTestModDig(t*testing.T) {
2641+
json:=`
2642+
{
2643+
2644+
"group": {
2645+
"issues": [
2646+
{
2647+
"fields": {
2648+
"labels": [
2649+
"milestone_1",
2650+
"group:foo",
2651+
"plan:a",
2652+
"plan:b"
2653+
]
2654+
},
2655+
"refid": "123"
2656+
},{
2657+
"fields": {
2658+
"labels": [
2659+
"milestone_2",
2660+
"group:foo",
2661+
"plan:a",
2662+
"plan"
2663+
]
2664+
},
2665+
"refid": "456"
2666+
},[
2667+
{"extra_deep":[{
2668+
"fields": {
2669+
"labels": [
2670+
"milestone_3",
2671+
"group:foo",
2672+
"plan:a",
2673+
"plan"
2674+
]
2675+
},
2676+
"refid": "789"
2677+
}]
2678+
}]
2679+
]
2680+
}
2681+
}
2682+
`
2683+
assert(t,Get(json,"group.@dig:#(refid=123)|0.fields.labels.0").String()=="milestone_1")
2684+
assert(t,Get(json,"group.@dig:#(refid=456)|0.fields.labels.0").String()=="milestone_2")
2685+
assert(t,Get(json,"group.@dig:#(refid=789)|0.fields.labels.0").String()=="milestone_3")
2686+
json=`
2687+
{ "something": {
2688+
"anything": {
2689+
"abcdefg": {
2690+
"finally": {
2691+
"important": {
2692+
"secret": "password",
2693+
"name": "jake"
2694+
}
2695+
},
2696+
"name": "melinda"
2697+
}
2698+
}
2699+
}
2700+
}`
2701+
assert(t,Get(json,"@dig:name").String()==`["melinda","jake"]`)
2702+
assert(t,Get(json,"@dig:secret").String()==`["password"]`)
2703+
}

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