NULL if file does not exist. NULL if the file does not exist. Return Values FOPEN returns a file handle, which must be passed to all subsequent procedures that operate on that file. FSEEK Procedure This procedure adjusts the file pointer forward or backward within the file by the number of bytes specified.
PUT Procedure PUT writes the text string stored in the buffer parameter to the open file identified by the file handle. Examples The following example writes the lines: Hello, world! I come from Zork with greetings for all earthlings.
File could not be opened or operated on as requested. Destination buffer too small, or operating system error occurred during the read operation. Operating system error occurred during the write operation. The requested operation failed because the file is open. Permission to access to the file location is denied. The requested file delete operation failed. The requested file rename operation failed. A numeric value indicating the internal file handle number.
Indicates whether the file was open as a binary file, or as a text file. Copies a contiguous portion of a file to a newly created file. Physically writes all pending output to a file.
Reads and returns the attributes of a disk file. Returns the current relative offset position within a file, in bytes. Opens a file in Unicode for input or output. Deletes a disk file, assuming that you have sufficient privileges. Renames an existing file to a new name, similar to the UNIX mv function. Adjusts the file pointer forward or backward within the file by the number of bytes specified. Reads text in Unicode from an open file.
Determines if a file handle refers to an open file. Writes one or more operating system-specific line terminators to a file. PUT Procedure. Writes a line to a file, and so appends an operating system-specific line terminator.
Hi Lakshmi, There is a Database limit which only allows at the most characters to be written at one time. The following illustrates two examples that write out 84K of data. Hope this helps you. Register or Login. Welcome back! Sign in with Email. Reset Your Password We'll send an email with a link to reset your password.
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See if this solution works for you by signing up for a 7 day free trial. What do I get with a subscription? With your subscription - you'll gain access to our exclusive IT community of thousands of IT pros. The source file is opened in read mode. The destination file is opened in write mode.
A starting and ending line number can optionally be specified to select a portion from the center of the source file for copying. The line number at which to stop copying. The default is NULL, signifying end of file. Normally, data being written to a file is buffered. The data must be terminated with a newline character. Flushing is useful when the file must be read while still open.
For example, debugging messages can be flushed to the file so that they can be read immediately. It raises an exception if the file is not open. It returns 0 for the beginning of the file. This function opens a file. You can specify the maximum line size and have a maximum of 50 files open simultaneously.
Directory location of file. This string is a directory object name and is case sensitive. The default is uppercase. File name, including extension file type , without directory path. Maximum number of characters for each line, including the newline character, for this file minimum value 1, maximum value FOPEN returns a file handle, which must be passed to all subsequent procedures that operate on that file.
This function opens a file in Unicode for input or output, with the maximum line size specified. You can have a maximum of 50 files open simultaneously. With this function, you can read or write a text file in Unicode instead of in the database charset. Maximum number of characters for each line, including the newline character, for this file.
An exception is returned on failure. This procedure renames an existing file to a new name, similar to the UNIX mv function. Permission on both the source and destination directories must be granted.
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