#%private/steel/ports

this module is in the prelude and therefore automatically available when running steel.

call-with-input-file

Calls the given proc with an input port obtained opening file. If proc returns, then the temporary port will be closed and the return value of proc returned.

(call-with-input-file file proc) -> any/c

• file : string?
• proc : procedure?

call-with-input-string

Calls the given proc with an input string port created by opening the given string with open-input-string. If proc returns, then the return value of proc returned.

(call-with-input-string proc) -> any/c

• proc : procedure?

call-with-output-file

Calls the given proc with an output port obtained opening file. If proc returns, then the temporary port will be closed and the return value of proc returned.

(call-with-output-file file proc) -> any/c

• file : string?
• proc : procedure?

call-with-output-string

Calls the given proc with an output string port created with open-output-string. If proc returns, then the content from the string port will be returned.

(call-with-output-string proc) -> string?

• proc : procedure?

call-with-port

Calls the given proc with the port. If proc returns, then the port will be closed and the return value of proc returned.

(call-with-port port proc) -> any/c

• port : port?
• proc : procedure?

with-input-from-file

Similar to call-with-input-file, but installs the newly opened port as the current-input-port instead of passing it as an argument. If thunk returns, then the temporary port will be closed and the return value of thunk returned.

(with-input-from-file file proc) > any/c

• file : string?
• thunk : procedure?

with-input-from-string

Similar to call-with-output-string, but installs the newly opened port as the current-input-port instead of passing it as an argument. If thunk returns, then the return value of thunk returned.

(with-input-from-string string thunk) -> any/c

• string : string?
• thunk : procedure?

with-output-to-file

Similar to call-with-output-file, but installs the newly opened port as the current-output-port instead of passing it as an argument. If thunk returns, then the temporary port will be closed and the return value of thunk returned.

(with-output-to-file file proc) > any/c

• file : string?
• thunk : procedure?

with-output-to-string

Similar to call-with-output-string, but installs the newly opened port as the current-input-port instead of passing it as an argument. If thunk returns, then the content from the string port will be returned.

(with-output-to-string thunk) -> string?

• thunk : procedure?