ReadData

array ReadData(string filename, int count)

Return Value

Returns array of bytes that represents the content of the file. If the file does not exist or read operation failed the size of result array is 0.

Parameters

filename – the name of the file.

count - the maximum number of bytes to be read from the file or -1 to read all bytes.

Remarks

Call this function to read data from the file into a byte array. Note that calling this function repositions the read pointer in the file by the number of bytes that have been read. In order to shift the read pointer to the beginning of the file you need to close the file first using CloseFile function.

Package

Plug in module: nd_fileplg.npl

Example

The following example demonstrates the use of ReadData.

# Example for ReadData

string sFileName = "c:\1.txt"

string sResult

array Bytes

if(IsFileExist(sFileName) == FALSE)

    Println("File ", sFileName, " does not exist")

    stop

endif

Bytes = ReadData(sFileName, -1)

int nBytes = GetArraySize(Bytes)

Println("Bytes read = ", nBytes)

for(int i=0;i<nBytes;i++)

    sResult += Bytes[i]

endfor

CloseFile(sFileName)

Println(sResult)

 

Output of the example script:           

Bytes read = 30
Hello World!!!
My name is Bob.