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122f24cc8a
* libguile/ports-internal.h (struct scm_port_internal): Add
setvbuf' field. Change 'pending_eof' to a 1-bit unsigned char.
* libguile/ports.c (scm_new_port_table_entry): Clear 'pti->setvbuf'.
* libguile/fports.c (scm_setvbuf): Accept any open port, and error out
when PORT's setvbuf' field is NULL. Remove explicit 'scm_gc_free' calls.
(scm_i_fdes_to_port): Set PORT's 'setvbuf' field.
* test-suite/tests/ports.test ("setvbuf")["closed port", "string port"]:
New tests.
* doc/ref/posix.texi (Ports and File Descriptors): Suggest that
'setvbuf' works for different port types.
77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/*
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* ports-internal.h - internal-only declarations for ports.
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*
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* Copyright (C) 2013, 2014 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifndef SCM_PORTS_INTERNAL
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#define SCM_PORTS_INTERNAL
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#include "libguile/_scm.h"
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#include "libguile/ports.h"
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enum scm_port_encoding_mode {
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SCM_PORT_ENCODING_MODE_UTF8,
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SCM_PORT_ENCODING_MODE_ICONV
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};
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typedef enum scm_port_encoding_mode scm_t_port_encoding_mode;
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/* This is a separate object so that only those ports that use iconv
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cause finalizers to be registered (FIXME: although currently in 2.0
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finalizers are always registered for ports anyway). */
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struct scm_iconv_descriptors
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{
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/* input/output iconv conversion descriptors */
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void *input_cd;
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void *output_cd;
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};
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typedef struct scm_iconv_descriptors scm_t_iconv_descriptors;
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struct scm_port_internal
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{
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unsigned at_stream_start_for_bom_read : 1;
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unsigned at_stream_start_for_bom_write : 1;
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scm_t_port_encoding_mode encoding_mode;
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scm_t_iconv_descriptors *iconv_descriptors;
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unsigned char pending_eof: 1;
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/* When non-NULL, this is the method called by 'setvbuf' for this port.
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It must create read and write buffers for PORT with the specified
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sizes (a size of 0 is for unbuffered ports, which should use the
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'shortbuf' field.) Size -1 means to use the port's preferred buffer
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size. */
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/* XXX: In 2.2 make this a property of the 'scm_t_ptob_descriptor'. */
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void (*setvbuf) (SCM port, long read_size, long write_size);
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/* Key-value properties. */
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SCM alist;
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};
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typedef struct scm_port_internal scm_t_port_internal;
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#define SCM_UNICODE_BOM 0xFEFFUL /* Unicode byte-order mark */
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#define SCM_PORT_GET_INTERNAL(x) \
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((scm_t_port_internal *) (SCM_PTAB_ENTRY(x)->input_cd))
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SCM_INTERNAL scm_t_iconv_descriptors *
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scm_i_port_iconv_descriptors (SCM port, scm_t_port_rw_active mode);
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#endif
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