Read a Binary File
Read the raw binary content of a file using a description of the binary format.
readFormat(file, format, width = NULL, offset = 0, machine = "hex",
flatten = TRUE)file |
The name of a file or a connection. |
format |
A |
width |
The number of bytes to print per row when displaying the file. |
offset |
An offset within the file to start reading. |
machine |
How to print each byte when displaying the file; either
|
flatten |
If |
This function uses a "memFormat" description to
read the raw binary content of a file and interpret
sub-blocks of the file as distinct (blocks of) values.
The "memFormat" can described a nested structure of
blocks. The flatten argument is used to convert
nested format structures to a flat (depth of one) structure.
The format is always flattened for display, but extracting
A "rawFormat" object, which is a list:
blocks |
A list (of lists) of |
offset |
The offset in the file where reading began. |
nbytes |
The number of bytes read from the file. |
Paul Murrell
fileFormat <- readFormat(hexViewFile("rawTest.int"),
memFormat(int1=integer4, int2=integer4))
blockValue(fileFormat$blocks$int2)
fileFormat <- readFormat(hexViewFile("rawTest.int"),
memFormat(integers=vectorBlock(integer4, 20)))
blockValue(fileFormat$blocks$integers)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.