guile/libguile/strports.h

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/* classes: h_files */
#ifndef STRPORTSH
#define STRPORTSH
/* Copyright (C) 1995,1996, 2000, 2001 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
#include "libguile/__scm.h"
#define SCM_STRPORTP(x) (!SCM_IMP (x) && \
(SCM_TYP16 (x) == scm_tc16_strport))
#define SCM_OPSTRPORTP(x) (SCM_STRPORTP (x) && \
(SCM_CELL_WORD_0 (x) & SCM_OPN))
#define SCM_OPINSTRPORTP(x) (SCM_OPSTRPORTP (x) && \
(SCM_CELL_WORD_0 (x) & SCM_RDNG))
#define SCM_OPOUTSTRPORTP(x) (SCM_OPSTRPORTP (x) && \
(SCM_CELL_WORD_0 (x) & SCM_WRTNG))
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extern scm_t_bits scm_tc16_strport;
extern SCM scm_mkstrport (SCM pos, SCM str, long modes, const char * caller);
1999-07-13 Gary Houston <ghouston@easynet.co.uk> * strports.c (scm_strprint_obj): simplify. start with initial buffer size of 0. (st_seek): don't allow string to be extended if seeking past the end of a read-only port. 1999-07-12 Gary Houston <ghouston@easynet.co.uk> * strports.c (st_seek): change the resize checks. * ports.c (scm_ftruncate): throw error if offset works out negative. * strports.c (st_flush): increase string size in blocks of SCM_WRITE_BLOCK instead of 1. set read_end to read_pos if it's greater and reset read_buf_size. (scm_mkstrport): set rw_randow if only writing, since read_buf needs to be maintained for output ports too (it holds the written part of the string, while write_buf may have unwritten buffer chars.) (st_truncate): rewritten. (top of file): added a few notes. 1999-07-06 Gary Houston <ghouston@easynet.co.uk> * strports.c (st_grow_port): set pt->read_pos. set pt->read_buf_size one less than pt->write_buf_size if there's an unwritten char at the end of the string. similarly for pt->read_end. (st_resize_port): renamed from st_grow_port. (st_seek): simplify by assuming that pt->write_pos == pt->read_pos. seek from read_end instead of write_end for SEEK_END. (st_ftruncate): calculate current length using readbuf, not write buf. (scm_strport_to_string): use read_buf_size for length. (stfill_buffer): don't re-initialise the readbuf. 1999-07-05 Gary Houston <ghouston@easynet.co.uk> * strports.c (scm_strport_to_string): new procedure. (scm_call_with_output_string, scm_strprint_obj): use scm_strport_to_string. used SCM_INUM0 instead of SCM_MAKINUM (0) in a few places.
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extern SCM scm_strport_to_string (SCM port);
extern SCM scm_object_to_string (SCM obj, SCM printer);
extern SCM scm_call_with_output_string (SCM proc);
extern SCM scm_call_with_input_string (SCM str, SCM proc);
extern SCM scm_open_input_string (SCM str);
extern SCM scm_open_output_string (void);
extern SCM scm_get_output_string (SCM port);
extern SCM scm_c_read_string (const char *expr);
extern SCM scm_c_eval_string (const char *expr);
extern SCM scm_eval_string (SCM string);
extern void scm_init_strports (void);
#if (SCM_DEBUG_DEPRECATED == 0)
extern SCM scm_strprint_obj (SCM obj);
extern SCM scm_read_0str (char *expr);
extern SCM scm_eval_0str (const char *expr);
#endif /* SCM_DEBUG_DEPRECATED == 0 */
#endif /* STRPORTSH */
/*
Local Variables:
c-file-style: "gnu"
End:
*/