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2 : /* ***** BEGIN LICENSE BLOCK *****
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37 :
38 : #ifndef nsDOMFileReader_h__
39 : #define nsDOMFileReader_h__
40 :
41 : #include "nsISupportsUtils.h"
42 : #include "nsString.h"
43 : #include "nsWeakReference.h"
44 : #include "nsIStreamListener.h"
45 : #include "nsIInterfaceRequestor.h"
46 : #include "nsJSUtils.h"
47 : #include "nsTArray.h"
48 : #include "nsIJSNativeInitializer.h"
49 : #include "prtime.h"
50 : #include "nsITimer.h"
51 : #include "nsICharsetDetector.h"
52 : #include "nsICharsetDetectionObserver.h"
53 :
54 : #include "nsIDOMFile.h"
55 : #include "nsIDOMFileReader.h"
56 : #include "nsIDOMFileList.h"
57 : #include "nsIInputStream.h"
58 : #include "nsCOMPtr.h"
59 : #include "nsIStreamLoader.h"
60 : #include "nsIChannel.h"
61 : #include "prmem.h"
62 :
63 : #include "FileIOObject.h"
64 :
65 : class nsDOMFileReader : public mozilla::dom::FileIOObject,
66 : public nsIDOMFileReader,
67 : public nsIInterfaceRequestor,
68 : public nsSupportsWeakReference,
69 : public nsIJSNativeInitializer,
70 : public nsICharsetDetectionObserver
71 : {
72 : public:
73 : nsDOMFileReader();
74 : virtual ~nsDOMFileReader();
75 :
76 : NS_DECL_ISUPPORTS_INHERITED
77 :
78 : NS_DECL_NSIDOMFILEREADER
79 :
80 58 : NS_FORWARD_NSIDOMEVENTTARGET(nsDOMEventTargetHelper::)
81 :
82 : // nsIInterfaceRequestor
83 : NS_DECL_NSIINTERFACEREQUESTOR
84 :
85 : NS_DECL_EVENT_HANDLER(load)
86 : NS_DECL_EVENT_HANDLER(loadend)
87 : NS_DECL_EVENT_HANDLER(loadstart)
88 :
89 : // nsIJSNativeInitializer
90 : NS_IMETHOD Initialize(nsISupports* aOwner, JSContext* cx, JSObject* obj,
91 : PRUint32 argc, jsval* argv);
92 :
93 : // nsICharsetDetectionObserver
94 : NS_IMETHOD Notify(const char *aCharset, nsDetectionConfident aConf);
95 :
96 : // FileIOObject overrides
97 : NS_IMETHOD DoAbort(nsAString& aEvent);
98 : NS_IMETHOD DoOnStopRequest(nsIRequest* aRequest, nsISupports* aContext,
99 : nsresult aStatus, nsAString& aSuccessEvent,
100 : nsAString& aTerminationEvent);
101 : NS_IMETHOD DoOnDataAvailable(nsIRequest* aRequest, nsISupports* aContext,
102 : nsIInputStream* aInputStream, PRUint32 aOffset,
103 : PRUint32 aCount);
104 :
105 : nsresult Init();
106 :
107 1486 : NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(nsDOMFileReader,
108 : FileIOObject)
109 : void RootResultArrayBuffer();
110 :
111 : protected:
112 : enum eDataFormat {
113 : FILE_AS_ARRAYBUFFER,
114 : FILE_AS_BINARY,
115 : FILE_AS_TEXT,
116 : FILE_AS_DATAURL
117 : };
118 :
119 : nsresult ReadFileContent(JSContext* aCx, nsIDOMBlob *aFile, const nsAString &aCharset, eDataFormat aDataFormat);
120 : nsresult GetAsText(const nsACString &aCharset,
121 : const char *aFileData, PRUint32 aDataLen, nsAString &aResult);
122 : nsresult GetAsDataURL(nsIDOMBlob *aFile, const char *aFileData, PRUint32 aDataLen, nsAString &aResult);
123 : nsresult GuessCharset(const char *aFileData, PRUint32 aDataLen, nsACString &aCharset);
124 : nsresult ConvertStream(const char *aFileData, PRUint32 aDataLen, const char *aCharset, nsAString &aResult);
125 :
126 6 : void FreeFileData() {
127 6 : PR_Free(mFileData);
128 6 : mFileData = nsnull;
129 6 : mDataLen = 0;
130 6 : }
131 :
132 : char *mFileData;
133 : nsCOMPtr<nsIDOMBlob> mFile;
134 : nsCString mCharset;
135 : PRUint32 mDataLen;
136 :
137 : eDataFormat mDataFormat;
138 :
139 : nsString mResult;
140 : nsCOMPtr<nsIPrincipal> mPrincipal;
141 :
142 : JSObject* mResultArrayBuffer;
143 : };
144 :
145 : #endif
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