Class weasel.Base64Stream
Defined in: Base64Stream.js.
| Constructor Attributes | Constructor Name and Description |
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Object to stream encode bytes/ints into a Base64 string.
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| Field Attributes | Field Name and Description |
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Lookup table of Base64 tokens for easy conversion of byte array to Base64,
might be improved by using a 12bit to Base64 pair of chars as opposed to 6bit to single Base64 char.
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| Method Attributes | Method Name and Description |
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appendByte(iByte)
Append a byte to the Base64 stream.
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appendTriple(i3Bytes)
Append 3 bytes at once to the stream, this is to reduce the overheads of calling
appendByte() 3 times.
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appendWord(iWord)
Append 2 bytes at once to the stream, this is to reduce the overheads of calling
appendByte() 2 times.
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flush()
Complete the Base64 stream (flush all remaining bits and append terminators).
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Get the generated base encoded string, you should have called flush() before using this.
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load()
Load the previously saved state of the base 64 encoding.
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prepend(sString)
Add a non-encoded string to the beginning of the Base64 encoded string, such as the dataURI header.
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save()
Save the current state of the base 64 encoding, if you have already saved the state it will be overwritten.
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Class Detail
weasel.Base64Stream()
Object to stream encode bytes/ints into a Base64 string.
Author: Warren Willmey 2012.
Author: Warren Willmey 2012.
Field Detail
aBase64Tokens
Lookup table of Base64 tokens for easy conversion of byte array to Base64,
might be improved by using a 12bit to Base64 pair of chars as opposed to 6bit to single Base64 char.
Method Detail
appendByte(iByte)
Append a byte to the Base64 stream.
- Parameters:
- {int} iByte
- = Byte of data to append to the stream.
appendTriple(i3Bytes)
Append 3 bytes at once to the stream, this is to reduce the overheads of calling
appendByte() 3 times.
- Parameters:
- {int} i3Bytes
- = The 3 bytes you want to append to the stream in format 0x112233.
appendWord(iWord)
Append 2 bytes at once to the stream, this is to reduce the overheads of calling
appendByte() 2 times.
- Parameters:
- {int} iWord
- = The 2 bytes you want to append to the stream in format 0x1122.
flush()
Complete the Base64 stream (flush all remaining bits and append terminators).
{string}
getBase64EncodedString()
Get the generated base encoded string, you should have called flush() before using this.
- Returns:
- {string} = The base64 encoded byte stream.
load()
Load the previously saved state of the base 64 encoding.
prepend(sString)
Add a non-encoded string to the beginning of the Base64 encoded string, such as the dataURI header.
- Parameters:
- {string} sString
- = The string to prepend.
save()
Save the current state of the base 64 encoding, if you have already saved the state it will be overwritten.