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New line or field iteration procedures in (ice-9 rdelim)

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* NEWS: Update
* module/ice-9/rdelim (for-rdelim-from-port, for-delimited-from-port,
  for-line-in-file): New procedures.
* doc/ref/api-io.texi: Documentation of `for-rdelim-for-port`-related
  procedures.
* test-suite/tests/rdelim.test: Tests for `for-rdelim-for-port`-related
  procedures.

Signed-off-by: Mikael Djurfeldt <mikael@djurfeldt.com>
This commit is contained in:
Adam Faiz 2024-12-19 22:36:38 +01:00 • committed by Mikael Djurfeldt
parent a9c079b13b
commit c2829e4a86
4 changed files with 96 additions and 2 deletions
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22
doc/ref/api-io.texi
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@ -984,6 +984,28 @@ used. This procedure is equivalent to:
@end lisp
@end deffn
@deffn {Scheme Procedure} for-rdelim-from-port port proc rdelim-proc @
[#:stop-pred=eof-object?]
For every unit provided by @code{(rdelim-proc port)}, provide
this unit(rdelim) to @var{proc} to be processed. This will continue throughout
@var{port} until @var{stop-pred} returns @code{#t}.
@var{stop-pred} is @code{eof-object?} by default.
@var{rdelim-proc} has to advance through @var{port} with every call made to it.
@end deffn
@deffn {Scheme Procedure} for-delimited-from-port port proc @
[#:delims=''\n''] [#:handle-delim='trim]
Call @var{proc} for every line delimited by @var{delims} from @var{port}.
@end deffn
@deffn {Scheme Procedure} for-line-in-file file proc @
[#:encoding=#f] [#:guess-encoding=#f]
Call @var{proc} for every line in @var{file}.
@var{file} must be a filename string.
The line provided to @var{proc} is guaranteed to be a string.
@end deffn
@node Default Ports
@subsection Default Ports for Input, Output and Errors
@cindex Default ports