Package
@google-cloud/storageConstructors
(constructor)(initialValue)
constructor
(
initialValue
?:
number
);
Constructs a new CRC32C
object.
Reconstruction is recommended via the CRC32C.from
static method.
Parameter
Name
Description
initialValue
number
An initial CRC32C value - a signed 32-bit integer.
Properties
CRC32C_EXTENSION_TABLE
static
readonly
CRC32C_EXTENSION_TABLE
:
Int32Array
;
CRC32C_EXTENSIONS
static
readonly
CRC32C_EXTENSIONS
:
readonly
[
0
,
4067132163
,
3778769143
,
324072436
,
3348797215
,
904991772
,
648144872
,
3570033899
,
2329499855
,
2024987596
,
1809983544
,
2575936315
,
1296289744
,
3207089363
,
2893594407
,
1578318884
,
274646895
,
3795141740
,
4049975192
,
51262619
,
3619967088
,
632279923
,
922689671
,
3298075524
,
2592579488
,
1760304291
,
2075979607
,
2312596564
,
1562183871
,
2943781820
,
3156637768
,
1313733451
,
549293790
,
3537243613
,
3246849577
,
871202090
,
3878099393
,
357341890
,
102525238
,
4101499445
,
2858735121
,
1477399826
,
1264559846
,
3107202533
,
1845379342
,
2677391885
,
2361733625
,
2125378298
,
820201905
,
3263744690
,
3520608582
,
598981189
,
4151959214
,
85089709
,
373468761
,
3827903834
,
3124367742
,
1213305469
,
1526817161
,
2842354314
,
2107672161
,
2412447074
,
2627466902
,
1861252501
,
1098587580
,
3004210879
,
2688576843
,
1378610760
,
2262928035
,
1955203488
,
1742404180
,
2511436119
,
3416409459
,
969524848
,
714683780
,
3639785095
,
205050476
,
4266873199
,
3976438427
,
526918040
,
1361435347
,
2739821008
,
2954799652
,
1114974503
,
2529119692
,
1691668175
,
2005155131
,
2247081528
,
3690758684
,
697762079
,
986182379
,
3366744552
,
476452099
,
3993867776
,
4250756596
,
255256311
,
1640403810
,
2477592673
,
2164122517
,
1922457750
,
2791048317
,
1412925310
,
1197962378
,
3037525897
,
3944729517
,
427051182
,
170179418
,
4165941337
,
746937522
,
3740196785
,
3451792453
,
1070968646
,
1905808397
,
2213795598
,
2426610938
,
1657317369
,
3053634322
,
1147748369
,
1463399397
,
2773627110
,
4215344322
,
153784257
,
444234805
,
3893493558
,
1021025245
,
3467647198
,
3722505002
,
797665321
,
2197175160
,
1889384571
,
1674398607
,
2443626636
,
1164749927
,
3070701412
,
2757221520
,
1446797203
,
137323447
,
4198817972
,
3910406976
,
461344835
,
3484808360
,
1037989803
,
781091935
,
3705997148
,
2460548119
,
1623424788
,
1939049696
,
2180517859
,
1429367560
,
2807687179
,
3020495871
,
1180866812
,
410100952
,
3927582683
,
4182430767
,
186734380
,
3756733383
,
763408580
,
1053836080
,
3434856499
,
2722870694
,
1344288421
,
1131464017
,
2971354706
,
1708204729
,
2545590714
,
2229949006
,
1988219213
,
680717673
,
3673779818
,
3383336350
,
1002577565
,
4010310262
,
493091189
,
238226049
,
4233660802
,
2987750089
,
1082061258
,
1395524158
,
2705686845
,
1972364758
,
2279892693
,
2494862625
,
1725896226
,
952904198
,
3399985413
,
3656866545
,
731699698
,
4283874585
,
222117402
,
510512622
,
3959836397
,
3280807620
,
837199303
,
582374963
,
3504198960
,
68661723
,
4135334616
,
3844915500
,
390545967
,
1230274059
,
3141532936
,
2825850620
,
1510247935
,
2395924756
,
2091215383
,
1878366691
,
2644384480
,
3553878443
,
565732008
,
854102364
,
3229815391
,
340358836
,
3861050807
,
4117890627
,
119113024
,
1493875044
,
2875275879
,
3090270611
,
1247431312
,
2660249211
,
1828433272
,
2141937292
,
2378227087
,
3811616794
,
291187481
,
34330861
,
4032846830
,
615137029
,
3603020806
,
3314634738
,
939183345
,
1776939221
,
2609017814
,
2295496738
,
2058945313
,
2926798794
,
1545135305
,
1330124605
,
3173225534
,
4084100981
,
17165430
,
307568514
,
3762199681
,
888469610
,
3332340585
,
3587147933
,
665062302
,
2042050490
,
2346497209
,
2559330125
,
1793573966
,
3190661285
,
1279665062
,
1595330642
,
2910671697
];
Methods
from(value)
static
from
(
value
:
ArrayBuffer
|
ArrayBufferView
|
CRC32CValidator
|
string
|
number
)
:
CRC32C
;
Generates a CRC32C
from a variety of compatable types. Note: strings are treated as input, not as file paths to read from.
Parameter
Name
Description
value
ArrayBuffer
| ArrayBufferView
| CRC32CValidator
| string | number
A number, 4-byte ArrayBufferView
/ Buffer
/ TypedArray
, or 4-byte base64-encoded data (string)
fromFile(file)
static
fromFile
(
file
:
PathLike
)
:
Promise<CRC32C>
;
Parameter
Name
Description
file
PathLike
toBuffer()
toBuffer
()
:
Buffer
;
Returns a Buffer
representation of the CRC32C value
Returns
Type
Description
Buffer
toJSON()
toJSON
()
:
string
;
Returns a JSON-compatible, base64-encoded representation of the CRC32C value.
See
Returns
Type
Description
string
toString()
toString
()
:
string
;
Returns a base64-encoded representation of the CRC32C value.
See
Returns
Type
Description
string
update(data)
update
(
data
:
Buffer
)
:
void
;
Calculates a CRC32C from a provided buffer.
Implementation inspired from: - - -
Parameter
Name
Description
data
Buffer
The Buffer
to generate the CRC32C from
Returns
Type
Description
void
validate(input)
validate
(
input
:
Buffer
|
CRC32CValidator
|
string
|
number
)
:
boolean
;
Validates a provided input to the current CRC32C value.
Parameter
Name
Description
input
"\"buffer\"".__global.Buffer
| CRC32CValidator
| string | number
A Buffer, CRC32C
-compatible object, base64-encoded data (string), or signed 32-bit integer
Returns
Type
Description
boolean
valueOf()
valueOf
()
:
number
;
Returns the number
representation of the CRC32C value as a signed 32-bit integer
See
Returns
Type
Description
number
