#define SCM_PORTS_H
/* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004,
- * 2006, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
+ * 2006, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
SCM_PORT_WRITE = 2
} scm_t_port_rw_active;
-typedef enum scm_t_port_encoding_mode {
- SCM_PORT_ENCODING_MODE_UTF8,
- SCM_PORT_ENCODING_MODE_LATIN1,
- SCM_PORT_ENCODING_MODE_ICONV
-} scm_t_port_encoding_mode;
-
-/* This is a separate object so that only those ports that use iconv
- cause finalizers to be registered. */
-typedef struct scm_t_iconv_descriptors
-{
- /* input/output iconv conversion descriptors */
- void *input_cd;
- void *output_cd;
-} scm_t_iconv_descriptors;
+/* An internal-only structure defined in ports-internal.h. */
+struct scm_port_internal;
/* C representation of a Scheme port. */
SCM port; /* Link back to the port object. */
scm_i_pthread_mutex_t *lock; /* A recursive lock for this port. */
+ /* pointer to internal-only port structure */
+ struct scm_port_internal *internal;
+
/* data for the underlying port implementation as a raw C value. */
scm_t_bits stream;
/* Character encoding support */
char *encoding;
- scm_t_port_encoding_mode encoding_mode;
scm_t_string_failed_conversion_handler ilseq_handler;
- scm_t_iconv_descriptors *iconv_descriptors;
-
- /* an alist for storing additional information
- (e.g. used to store per-port read options) */
- SCM alist;
} scm_t_port;
scm_t_off (*seek) (SCM port, scm_t_off OFFSET, int WHENCE);
void (*truncate) (SCM port, scm_t_off length);
+ /* When non-NULL, this is the method called by 'setvbuf' for this port.
+ It must create read and write buffers for PORT with the specified
+ sizes (a size of 0 is for unbuffered ports, which should use the
+ 'shortbuf' field.) Size -1 means to use the port's preferred buffer
+ size. */
+ void (*setvbuf) (SCM port, long read_size, long write_size);
+
unsigned flags;
} scm_t_ptob_descriptor;
void (*truncate) (SCM port,
scm_t_off length));
SCM_API void scm_set_port_input_waiting (scm_t_bits tc, int (*input_waiting) (SCM));
+SCM_API void scm_set_port_setvbuf (scm_t_bits tc,
+ void (*setvbuf) (SCM, long, long));
/* The input, output, error, and load ports. */
SCM_API SCM scm_current_input_port (void);
scm_i_default_port_conversion_handler (void);
SCM_INTERNAL void
scm_i_set_default_port_conversion_handler (scm_t_string_failed_conversion_handler);
-SCM_INTERNAL scm_t_iconv_descriptors *scm_i_port_iconv_descriptors (SCM port);
SCM_INTERNAL void scm_i_set_port_encoding_x (SCM port, const char *str);
SCM_API SCM scm_port_encoding (SCM port);
SCM_API SCM scm_set_port_encoding_x (SCM port, SCM encoding);
/* Input. */
SCM_API int scm_get_byte_or_eof (SCM port);
SCM_INLINE int scm_get_byte_or_eof_unlocked (SCM port);
+SCM_API int scm_slow_get_byte_or_eof_unlocked (SCM port);
SCM_API int scm_peek_byte_or_eof (SCM port);
SCM_INLINE int scm_peek_byte_or_eof_unlocked (SCM port);
+SCM_API int scm_slow_peek_byte_or_eof_unlocked (SCM port);
SCM_API size_t scm_c_read (SCM port, void *buffer, size_t size);
SCM_API size_t scm_c_read_unlocked (SCM port, void *buffer, size_t size);
SCM_API scm_t_wchar scm_getc (SCM port);
SCM_API SCM scm_read_char (SCM port);
/* Pushback. */
+SCM_API void scm_unget_bytes (const unsigned char *buf, size_t len, SCM port);
+SCM_API void scm_unget_bytes_unlocked (const unsigned char *buf, size_t len, SCM port);
SCM_API void scm_unget_byte (int c, SCM port);
SCM_API void scm_unget_byte_unlocked (int c, SCM port);
SCM_API void scm_ungetc (scm_t_wchar c, SCM port);
SCM_API SCM scm_port_filename (SCM port);
SCM_API SCM scm_set_port_filename_x (SCM port, SCM filename);
+/* Port properties. */
+SCM_INTERNAL SCM scm_i_port_property (SCM port, SCM key);
+SCM_INTERNAL SCM scm_i_set_port_property_x (SCM port, SCM key, SCM value);
+
/* Implementation helpers for port printing functions. */
SCM_API int scm_port_print (SCM exp, SCM port, scm_print_state *);
SCM_API void scm_print_port_mode (SCM exp, SCM port);
SCM_INLINE_IMPLEMENTATION int
scm_get_byte_or_eof_unlocked (SCM port)
{
- int c;
scm_t_port *pt = SCM_PTAB_ENTRY (port);
- if (pt->rw_active == SCM_PORT_WRITE)
- /* may be marginally faster than calling scm_flush. */
- SCM_PORT_DESCRIPTOR (port)->flush (port);
-
- if (pt->rw_random)
- pt->rw_active = SCM_PORT_READ;
-
- if (pt->read_pos >= pt->read_end)
- {
- if (SCM_UNLIKELY (scm_fill_input_unlocked (port) == EOF))
- return EOF;
- }
-
- c = *(pt->read_pos++);
-
- return c;
+ if (SCM_LIKELY ((pt->rw_active == SCM_PORT_READ || !pt->rw_random)
+ && pt->read_pos < pt->read_end))
+ return *pt->read_pos++;
+ else
+ return scm_slow_get_byte_or_eof_unlocked (port);
}
/* Like `scm_get_byte_or_eof' but does not change PORT's `read_pos'. */
SCM_INLINE_IMPLEMENTATION int
scm_peek_byte_or_eof_unlocked (SCM port)
{
- int c;
scm_t_port *pt = SCM_PTAB_ENTRY (port);
- if (pt->rw_active == SCM_PORT_WRITE)
- /* may be marginally faster than calling scm_flush. */
- SCM_PORT_DESCRIPTOR (port)->flush (port);
-
- if (pt->rw_random)
- pt->rw_active = SCM_PORT_READ;
-
- if (pt->read_pos >= pt->read_end)
- {
- if (SCM_UNLIKELY (scm_fill_input_unlocked (port) == EOF))
- return EOF;
- }
-
- c = *pt->read_pos;
-
- return c;
+ if (SCM_LIKELY ((pt->rw_active == SCM_PORT_READ || !pt->rw_random)
+ && pt->read_pos < pt->read_end))
+ return *pt->read_pos;
+ else
+ return scm_slow_peek_byte_or_eof_unlocked (port);
}
SCM_INLINE_IMPLEMENTATION void
HCoop / bpt / guile.git / blobdiff