8.6.1 Implementation Defined Options
- file access methods used:
BIN work as you would
W/O translates into the C file opening mode
wb): The file is cleared, if it exists, and created, if it does
not (with both
create-file). Under Unix
create-file creates a file with 666 permissions modified by your
- file exceptions:
- The file words do not raise exceptions (except, perhaps, memory access
faults when you pass illegal addresses or file-ids).
- file line terminator:
- System-dependent. Gforth uses C's newline character as line
terminator. What the actual character code(s) of this are is
- file name format:
- System dependent. Gforth just uses the file name format of your OS.
- information returned by
FILE-STATUS returns the most powerful file access mode allowed
for the file: Either
R/W. If the file
cannot be accessed,
R/O BIN is returned.
BIN is applicable
along with the returned mode.
- input file state after an exception when including source:
- All files that are left via the exception are closed.
- ior values and meaning:
- The iors returned by the file and memory allocation words are
intended as throw codes. They typically are in the range
-512−-2047 of OS errors. The mapping from OS error numbers to
iors is -512−errno.
- maximum depth of file input nesting:
- limited by the amount of return stack, locals/TIB stack, and the number
of open files available. This should not give you troubles.
- maximum size of input line:
/line. Currently 255.
- methods of mapping block ranges to files:
- By default, blocks are accessed in the file blocks.fb in the
current working directory. The file can be switched with
- number of string buffers provided by
- size of string buffer used by
/line. currently 255.