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Recognise and run BC bundles

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Reviewed By: javache

Differential Revision: D4067425

fbshipit-source-id: fade9adebfa8a59dc49aeadfd01a782f7b686082
This commit is contained in:
Ashok Menon
2016-11-01 10:14:00 -07:00
committed by Facebook Github Bot
parent 94711bfb06
commit 16290851aa
5 changed files with 147 additions and 51 deletions
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24
React/Base/RCTJavaScriptLoader.m
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@@ -18,10 +18,24 @@
#include <sys/stat.h>
uint32_t const RCTRAMBundleMagicNumber = 0xFB0BD1E5;
static uint32_t const RCTRAMBundleMagicNumber = 0xFB0BD1E5;
static uint64_t const RCTBCBundleMagicNumber = 0xFF4865726D657300;
NSString *const RCTJavaScriptLoaderErrorDomain = @"RCTJavaScriptLoaderErrorDomain";
RCTScriptTag RCTParseMagicNumber(RCTMagicNumber magic)
{
if (NSSwapLittleIntToHost(magic.first4) == RCTRAMBundleMagicNumber) {
return RCTScriptRAMBundle;
}
if (NSSwapLittleLongLongToHost(magic.first8) == RCTBCBundleMagicNumber) {
return RCTScriptBCBundle;
}
return RCTScriptString;
}
@implementation RCTLoadingProgress
- (NSString *)description
@@ -112,7 +126,7 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
return nil;
}
uint32_t magicNumber;
RCTMagicNumber magicNumber = {.allBytes = 0};
size_t readResult = fread(&magicNumber, sizeof(magicNumber), 1, bundle);
fclose(bundle);
if (readResult != 1) {
@@ -125,13 +139,13 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
return nil;
}
magicNumber = NSSwapLittleIntToHost(magicNumber);
if (magicNumber != RCTRAMBundleMagicNumber) {
RCTScriptTag tag = RCTParseMagicNumber(magicNumber);
if (tag == RCTScriptString) {
if (error) {
*error = [NSError errorWithDomain:RCTJavaScriptLoaderErrorDomain
code:RCTJavaScriptLoaderErrorCannotBeLoadedSynchronously
userInfo:@{NSLocalizedDescriptionKey:
@"Cannot load non-RAM bundled files synchronously"}];
@"Cannot load text/javascript files synchronously"}];
}
return nil;
}