Node:Writing, Next:Closing, Previous:Reading, Up:Input and Output
[Generic procedures for writing to ports.]
| get-print-state port | Scheme Procedure |
| scm_get_print_state (port) | C Function |
Return the print state of the port port. If port
has no associated print state, #f is returned.
|
| display obj [port] | Scheme Procedure |
Send a representation of obj to current-output-port.
Optional second arg port specifies an alternative output port.
The representation is similar to that produced by write (REFFIXME),
the differences being strings are not quoted (and their characters are not
escaped), and characters are rendered as if with write-char.
|
| newline [port] | Scheme Procedure |
| scm_newline (port) | C Function |
| Send a newline to port. If port is omitted, send to the current output port. |
| port-with-print-state port pstate | Scheme Procedure |
| scm_port_with_print_state (port, pstate) | C Function |
| Create a new port which behaves like port, but with an included print state pstate. |
| print-options-interface [setting] | Scheme Procedure |
| scm_print_options (setting) | C Function |
Option interface for the print options. Instead of using
this procedure directly, use the procedures
print-enable, print-disable, print-set!
and print-options.
|
| simple-format destination message . args | Scheme Procedure |
| scm_simple_format (destination, message, args) | C Function |
Write message to destination, defaulting to
the current output port.
message can contain ~A (was %s) and
~S (was %S) escapes. When printed,
the escapes are replaced with corresponding members of
ARGS:
~A formats using display and ~S formats
using write.
If destination is #t, then use the current output
port, if destination is #f, then return a string
containing the formatted text. Does not add a trailing newline.
|
| write-char chr [port] | Scheme Procedure |
| scm_write_char (chr, port) | C Function |
| Send character chr to port. |
| force-output [port] | Scheme Procedure |
| scm_force_output (port) | C Function |
|
Flush the specified output port, or the current output port if port
is omitted. The current output buffer contents are passed to the
underlying port implementation (e.g., in the case of fports, the
data will be written to the file and the output buffer will be cleared.)
It has no effect on an unbuffered port.
The return value is unspecified. |
| flush-all-ports | Scheme Procedure |
| scm_flush_all_ports () | C Function |
Equivalent to calling force-output on
all open output ports. The return value is unspecified.
|