#ifndef SCM_PORTS_H
#define SCM_PORTS_H
-/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004,
+ * 2006, 2008, 2009, 2010, 2011 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
#include "libguile/__scm.h"
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include "libguile/gc.h"
+#include "libguile/tags.h"
+#include "libguile/error.h"
#include "libguile/print.h"
#include "libguile/struct.h"
#include "libguile/threads.h"
typedef struct
{
SCM port; /* Link back to the port object. */
+#if SCM_USE_PTHREAD_THREADS
+ scm_i_pthread_mutex_t lock; /* A recursive lock for this port. */
+#endif
+
int revealed; /* 0 not revealed, > 1 revealed.
* Revealed ports do not get GC'd.
*/
/* a buffer for un-read chars and strings. */
unsigned char *putback_buf;
size_t putback_buf_size; /* allocated size of putback_buf. */
+
+ /* input/output iconv conversion descriptors */
+ void *input_cd;
+ void *output_cd;
} scm_t_port;
-SCM_INTERNAL scm_i_pthread_mutex_t scm_i_port_table_mutex;
-SCM_INTERNAL SCM scm_i_port_weak_hash;
+SCM_INTERNAL SCM scm_i_port_weak_set;
#define SCM_READ_BUFFER_EMPTY_P(c_port) (c_port->read_pos >= c_port->read_end)
#define SCM_BUF0 (8L<<16) /* Is it unbuffered? */
#define SCM_BUFLINE (64L<<16) /* Is it line-buffered? */
-#define SCM_PORTP(x) (!SCM_IMP (x) && (SCM_TYP7 (x) == scm_tc7_port))
-#define SCM_OPPORTP(x) (!SCM_IMP(x) && (((0x7f | SCM_OPN) & SCM_CELL_WORD_0(x))==(scm_tc7_port | SCM_OPN)))
-#define SCM_OPINPORTP(x) (!SCM_IMP(x) && (((0x7f | SCM_OPN | SCM_RDNG) & SCM_CELL_WORD_0(x))==(scm_tc7_port | SCM_OPN | SCM_RDNG)))
-#define SCM_OPOUTPORTP(x) (!SCM_IMP(x) && (((0x7f | SCM_OPN | SCM_WRTNG) & SCM_CELL_WORD_0(x))==(scm_tc7_port | SCM_OPN | SCM_WRTNG)))
-#define SCM_INPUT_PORT_P(x) \
- (!SCM_IMP(x) \
- && (((0x7f | SCM_RDNG) & SCM_CELL_WORD_0(x)) == (scm_tc7_port | SCM_RDNG)))
-#define SCM_OUTPUT_PORT_P(x) \
- (!SCM_IMP(x) \
- && (((0x7f | SCM_WRTNG) & SCM_CELL_WORD_0(x))==(scm_tc7_port | SCM_WRTNG)))
-#define SCM_OPENP(x) (!SCM_IMP(x) && (SCM_OPN & SCM_CELL_WORD_0 (x)))
-#define SCM_CLOSEDP(x) (!SCM_OPENP(x))
+#define SCM_PORTP(x) (SCM_HAS_TYP7 (x, scm_tc7_port))
+#define SCM_OPPORTP(x) (SCM_PORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_OPN))
+#define SCM_INPUT_PORT_P(x) (SCM_PORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_RDNG))
+#define SCM_OUTPUT_PORT_P(x) (SCM_PORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_WRTNG))
+#define SCM_OPINPORTP(x) (SCM_OPPORTP (x) && SCM_INPUT_PORT_P (x))
+#define SCM_OPOUTPORTP(x) (SCM_OPPORTP (x) && SCM_OUTPUT_PORT_P (x))
+#define SCM_OPENP(x) (SCM_OPPORTP (x))
+#define SCM_CLOSEDP(x) (!SCM_OPENP (x))
#define SCM_CLR_PORT_OPEN_FLAG(p) \
SCM_SET_CELL_WORD_0 ((p), SCM_CELL_WORD_0 (p) & ~SCM_OPN)
\f
+/* Hey you! Yes you, reading the header file! We're going to deprecate
+ scm_ptobs in 2.2, so please don't write any new code that uses it.
+ Thanks. */
SCM_API scm_t_ptob_descriptor *scm_ptobs;
SCM_API long scm_numptob;
-SCM_INTERNAL long scm_i_port_table_room;
\f
SCM_API void scm_dynwind_current_input_port (SCM port);
SCM_API void scm_dynwind_current_output_port (SCM port);
SCM_API void scm_dynwind_current_error_port (SCM port);
+
+SCM_API SCM
+scm_c_make_port_with_encoding (scm_t_bits tag,
+ unsigned long mode_bits,
+ const char *encoding,
+ scm_t_string_failed_conversion_handler handler,
+ scm_t_bits stream);
+SCM_API SCM scm_c_make_port (scm_t_bits tag, unsigned long mode_bits,
+ scm_t_bits stream);
SCM_API SCM scm_new_port_table_entry (scm_t_bits tag);
-SCM_INTERNAL void scm_i_remove_port (SCM port);
-SCM_API void scm_grow_port_cbuf (SCM port, size_t requested);
-SCM_API SCM scm_pt_size (void);
-SCM_API SCM scm_pt_member (SCM member);
+
+SCM_INLINE int scm_c_lock_port (scm_t_port *entry);
+SCM_INLINE int scm_c_try_lock_port (scm_t_port *entry);
+SCM_INLINE int scm_c_unlock_port (scm_t_port *entry);
+
SCM_API void scm_port_non_buffer (scm_t_port *pt);
SCM_API int scm_revealed_count (SCM port);
SCM_API SCM scm_port_revealed (SCM port);
SCM_API SCM scm_flush_all_ports (void);
SCM_API SCM scm_read_char (SCM port);
SCM_API scm_t_wchar scm_getc (SCM port);
+SCM_INLINE int scm_get_byte_or_eof (SCM port);
+SCM_INLINE int scm_peek_byte_or_eof (SCM port);
SCM_API size_t scm_c_read (SCM port, void *buffer, size_t size);
+SCM_INLINE void scm_putc (char c, SCM port);
+SCM_INLINE void scm_puts (const char *str_data, SCM port);
SCM_API void scm_c_write (SCM port, const void *buffer, size_t size);
SCM_API void scm_lfwrite (const char *ptr, size_t size, SCM port);
-SCM_INTERNAL void scm_lfwrite_str (SCM str, SCM port);
SCM_INTERNAL void scm_lfwrite_substr (SCM str, size_t start, size_t end,
SCM port);
SCM_API void scm_flush (SCM port);
SCM_API SCM scm_set_port_column_x (SCM port, SCM line);
SCM_API SCM scm_port_filename (SCM port);
SCM_API SCM scm_set_port_filename_x (SCM port, SCM filename);
-SCM_INTERNAL const char *scm_i_get_port_encoding (SCM port);
+SCM_INTERNAL const char *scm_i_default_port_encoding (void);
+SCM_INTERNAL void scm_i_set_default_port_encoding (const char *);
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);
SCM_API SCM scm_set_port_conversion_strategy_x (SCM port, SCM behavior);
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_API void scm_ports_prehistory (void);
SCM_API SCM scm_void_port (char * mode_str);
SCM_API SCM scm_sys_make_void_port (SCM mode);
SCM_INTERNAL void scm_init_ports (void);
-#if SCM_ENABLE_DEPRECATED==1
-SCM_API scm_t_port * scm_add_to_port_table (SCM port);
-#endif
-
-#ifdef GUILE_DEBUG
-SCM_API SCM scm_pt_size (void);
-SCM_API SCM scm_pt_member (SCM member);
-#endif /* GUILE_DEBUG */
-
/* internal */
SCM_INTERNAL long scm_i_mode_bits (SCM modes);
SCM_INTERNAL void scm_i_dynwind_current_load_port (SCM port);
+/* Inline function implementations. */
+
+#if SCM_CAN_INLINE || defined SCM_INLINE_C_IMPLEMENTING_INLINES
+SCM_INLINE_IMPLEMENTATION int
+scm_c_lock_port (scm_t_port *entry)
+{
+#if SCM_USE_PTHREAD_THREADS
+ return scm_i_pthread_mutex_lock (&entry->lock);
+#else
+ return 0;
+#endif
+}
+
+SCM_INLINE_IMPLEMENTATION int
+scm_c_try_lock_port (scm_t_port *entry)
+{
+#if SCM_USE_PTHREAD_THREADS
+ return scm_i_pthread_mutex_trylock (&entry->lock);
+#else
+ return 0;
+#endif
+}
+
+SCM_INLINE_IMPLEMENTATION int
+scm_c_unlock_port (scm_t_port *entry)
+{
+#if SCM_USE_PTHREAD_THREADS
+ return scm_i_pthread_mutex_unlock (&entry->lock);
+#else
+ return 0;
+#endif
+}
+
+SCM_INLINE_IMPLEMENTATION int
+scm_get_byte_or_eof (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_ptobs[SCM_PTOBNUM (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 (port) == EOF))
+ return EOF;
+ }
+
+ c = *(pt->read_pos++);
+
+ return c;
+}
+
+/* Like `scm_get_byte_or_eof' but does not change PORT's `read_pos'. */
+SCM_INLINE_IMPLEMENTATION int
+scm_peek_byte_or_eof (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_ptobs[SCM_PTOBNUM (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 (port) == EOF))
+ return EOF;
+ }
+
+ c = *pt->read_pos;
+
+ return c;
+}
+
+SCM_INLINE_IMPLEMENTATION void
+scm_putc (char c, SCM port)
+{
+ SCM_ASSERT_TYPE (SCM_OPOUTPORTP (port), port, 0, NULL, "output port");
+ scm_lfwrite (&c, 1, port);
+}
+
+SCM_INLINE_IMPLEMENTATION void
+scm_puts (const char *s, SCM port)
+{
+ SCM_ASSERT_TYPE (SCM_OPOUTPORTP (port), port, 0, NULL, "output port");
+ scm_lfwrite (s, strlen (s), port);
+}
+#endif /* SCM_CAN_INLINE || defined SCM_INLINE_C_IMPLEMENTING_INLINES */
+
#endif /* SCM_PORTS_H */
/*
HCoop / bpt / guile.git / blobdiff