The sample application below may be used as a reference to understand how to use DMTools APIs to develop, modify or integrate applications that leverage the capabilities of WindSpring's patented mobile data optimization technologies.
includes the file API header definitions used in declarations for DMT file operation.
shows special declarations for DMT file operation. The DMT_FILE represents an instance of a DMT miniaturized file.
shows how to perform an operation on a DMT file. Open the file using the dmt_fopen() function. A null value returned
denotes a problem, such as file does not exist at specified location or the user does not have the correct permission to open
the file in the mode specified. The first parameter specifies the file type (QS encoded, QP encoded or unencoded, i.e. not a
DMT file). XX_TYPE allows the dmt_file_api library to determine the file type. This parameter is ignored for operations on
existing DMT encoded files. Here, the actual file type overrides this parameter. (These parameter values are defined in
dmt_file_api.h). The second parameter is a character array containing the file name. The third parameter is the mode of
operation – “r” for read, “r+”, “w” or “a” for writing, and the special DMT modes “s” for seed and “e” for encode.
shows how to seek to a specific location in the DMT stream using dmt_fseek. The first parameter is the instance of a
DMT_FILE that was retuned by prior call to dmt_fopen function call.
shows how to use the dmt_ftell to obtain the current filepointer position.
does a read from a DMT stream. The return value is the number of bytes read from the stream. This could be less than
the value requested if there aren’t enough bytes available.
writes the text “something” at the current filepointer position.
closes the DMT file. Each file successfully opened must be closed prior to exiting the application. Note: Do not use
the fcloseall() C function call, as that will close internal DMT working files without properly closing any open DMT files.
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