* libguile/ports.h (scm_c_put_latin1_chars, scm_c_put_utf32_chars)
(scm_c_put_char, scm_c_put_string, scm_print_string): New public
functions. The plan is to move encoding to ports.c and out of
print.c.
* libguile/ports.c (UTF8_BUFFER_SIZE, ESCAPE_BUFFER_SIZE): New internal
defines.
(update_port_position): Take a position instead of a port. Update
callers.
(utf8_to_codepoint): Allow lengths that are larger than necessary.
(port_clear_stream_start_for_bom_write): Require that io_mode be
BOM_IO_TEXT to write a BOM.
(scm_fill_input): Add a related comment about BOM handling.
(scm_i_write): use BOM_IO_TEXT, at least for now.
(encode_escape_sequence, codepoint_to_utf8, utf8_to_codepoint)
(put_utf8_chars_to_iconv_port, put_latin1_chars_to_utf8_port)
(put_latin1_chars_to_iconv_port, put_utf32_chars_to_latin1_port)
(put_utf32_chars_to_utf8_port, put_utf32_chars_to_iconv_port): New
helpers.
(scm_putc, scm_puts): Use scm_c_put_char and scm_put_latin1_chars.
* libguile/ports.c (scm_port_line_buffered_p): New function.
* module/ice-9/ports.scm: Plump port-line-buffered? and
port-auxiliary-write-buffer through to the internals module
* libguile/ports-internal.h (scm_t_port): Add write_buf_aux field.
* libguile/ports.h (scm_port_auxiliary_write_buffer): New internal
decl.
* libguile/ports.c (AUXILIARY_WRITE_BUFFER_SIZE): New constant.
(initialize_port_buffers): Init aux write buf.
(scm_port_auxiliary_write_buffer): Lazily allocate an aux write
buffer.
(scm_c_write): Arrange to write through an aux buffer if the port is
unbuffered.
* libguile/ports-internal.h (scm_t_port): Rework to store iconv
descriptors inline, so that the port finalizer doesn't race with the
iconv descriptor finalizer. Access is serialized through a lock.
Fixes a bug whereby if the port finalizer and the descriptor finalizer
run on different threads, the close-port run by the port finalizer
could try to free the iconv descriptors at the same time as the
descriptor finalizer.
* libguile/ports.c (iconv_lock): New static variable.
(scm_c_make_port_with_encoding): Initialize iconv-related fields.
(scm_close_port): Lock while frobbing iconv descriptors.
(prepare_iconv_descriptors): Adapt.
(scm_specialize_port_encoding_x, scm_i_set_port_encoding_x): Lock
while preparing iconv descriptors.
(scm_port_acquire_iconv_descriptors)
(scm_port_release_iconv_descriptors): New functions, which replace
scm_i_port_iconv_descriptors.
(scm_port_decode_char): Lock around iconv operations.
(port_clear_stream_start_for_bom_write): Acquire iconv descriptors
before checking precise_encoding, to make sure precise_encoding is
initialized.
* libguile/print.c (display_string_using_iconv): Adapt to use the new
interface to get iconv descriptors from a port.
* libguile/ports-internal.h (scm_port_buffer_position):
(scm_port_position_line, scm_port_position_set_line):
(scm_port_position_column, scm_port_position_set_column): New
helpers.
(scm_t_port): Ports now hold position as a pair, so that Scheme can
access it easily.
(SCM_LINUM, SCM_COL, SCM_INCLINE, SCM_ZEROCOL, SCM_INCCOL)
(SCM_DECCOL, SCM_TABCOL): Remove.
* libguile/ports.c (make_port_buffer): Rename from
scm_c_make_port_buffer, make static, and take port as an argument so
we can initialize the position field.
(initialize_port_buffers): Adapt make_port_buffer change.
(scm_c_make_port_with_encoding): Initialize position.
(update_port_position): Rename from update_port_lf, and operate on
port position objects.
(scm_ungetc): Operate on port position objects.
(scm_setvbuf, scm_expand_port_read_buffer_x): Adapt to
make_port_buffer change.
(scm_lfwrite): Adapt to call update_port_position.
(scm_port_line, scm_set_port_line_x, scm_port_column)
(scm_set_port_column_x): Adapt to use port positions.
* libguile/ports.h (scm_c_make_port_buffer): Remove internal decl.
* libguile/read.c: Adapt to use scm_port_line / scm_port_column instead
of SCM_LINUM et al.
* module/ice-9/ports.scm (port-buffer-position, port-position-line)
(port-position-column, set-port-position-line!)
(set-port-position-column!): New accessors for the internals module.
* module/ice-9/sports.scm (advance-port-position!): Rename from
port-advance-position! and use the new accessors.
(read-char, port-fold-chars/iso-8859-1): Adapt to use
advance-port-position!.
This removes a limitation on the number of port types, simplifies the
API, and removes a central point of coordination.
* libguile/ports-internal.h (struct scm_t_port_type): Rename from
scm_t_ptob_descriptor, now that it's private. Add GOOPS class
fields.
(struct scm_t_port): Rename from struct scm_port, especially
considering that deprecated.h redefines scm_port using the
preprocessor :(.
* libguile/ports.h: Add definitions of SCM_PORT and SCM_PORT_TYPE,
though the scm_t_port and scm_t_port_type types are incomplete.
(SCM_TC2PTOBNUM, SCM_PTOBNUM, SCM_PTOBNAME): Remove, as there are no
more typecodes for port types.
(scm_c_num_port_types, scm_c_port_type_ref, scm_c_port_type_add_x):
Remove.
(scm_make_port_type): Return a scm_t_port_type*. All methods adapted
to take a scm_t_port_type* instead of a ptobnum.
(scm_c_make_port_with_encoding, scm_c_make_port): Take a port type
pointer instead of a tag.
(scm_new_port_table_entry): Remove; not useful.
* libguile/ports.c: Remove things related to the port kind table. Adapt
uses of SCM_PORT_DESCRIPTOR / scm_t_ptob_descriptor to use
SCM_PORT_TYPE and scm_t_port_type.
* libguile/deprecated.c:
* libguile/deprecated.h:
* libguile/filesys.c:
* libguile/fports.c:
* libguile/fports.h:
* libguile/print.c:
* libguile/r6rs-ports.c:
* libguile/strports.c:
* libguile/strports.h:
* libguile/tags.h:
* libguile/vports.c:
* test-suite/standalone/test-scm-c-read.c: Adapt to change.
* libguile/goops.c (scm_class_of, make_port_classes)
(scm_make_port_classes, create_port_classes): Adapt to store the
classes in the ptob.
* libguile/ports-internal.h (enum scm_port_encoding_mode): Remove unused
enum.
(scm_t_port_internal, scm_t_port): Make encoding and
conversion_strategy private. Instead of scm_t_port_internal containing
scm_t_port, now that all members are private, we can store the user's
"stream" in a word in the port object itself and make the whole of
scm_t_port private. The next commit will remove scm_t_port_internal.
(SCM_PTAB_ENTRY, SCM_PORT_DESCRIPTOR): Make private.
* libguile/ports.c (scm_c_make_port_with_encoding): Adapt to new port
layout.
(scm_port_print): Use SCM_PTAB_ENTRY when printing.
* libguile/ports.h: Remove scm_t_port definition.
* libguile/ioext.c (get_matching_port): Simplify.
* libguile/fports.c (scm_i_evict_port): Simplify.
* libguile/ports-internal.h (scm_t_port_internal)
* libguile/ports.h (scm_t_port): Embed scm_t_port in scm_t_port_internal
so that we have just one allocation.
* libguile/ports-internal.h (SCM_PORT_GET_INTERNAL): Adapt.
* libguile/ports.c (scm_i_port_property, scm_i_set_port_property_x)
(scm_c_make_port_with_encoding): Adapt.
* doc/ref/api-io.texi (I/O Extensions): Update documentation on
implementing port types. Document get_natural_buffer_sizes. Document
the new random_access_p.
* libguile/fports.c (scm_i_fdes_to_port, fport_random_access_p):
(scm_make_fptob): Instead of frobbing rw_random manually, implement a
random_access_p function.
* libguile/ports.c (default_random_access_p)
(scm_set_port_random_access_p): New functions.
scm_make_port_type, scm_c_make_port_with_encoding): Arrange for
random_access_p to work.
* libguile/ports.c (scm_specialize_port_encoding_x): Add some sanity
checks.
(scm_unget_bytes): Use scm_expand_port_read_buffer_x.
(port_clear_stream_start_for_bom_read): Use
scm_specialize_port_encoding_x.
(scm_fill_input): Use scm_expand_port_read_buffer_x.
(scm_expand_port_read_buffer_x): Rename from
scm_set_port_read_buffer_x and actually expand the buffer.
* libguile/ports.h: Adapt to scm_expand_port_read_buffer_x change.
* module/ice-9/ports.scm: Remove ports-in-scheme stuff, and instead
expose the ports internals via an auxiliary module. This will let
ports-in-scheme live in a module during Guile 2.2.
* libguile/ports.c (peek_utf8_codepoint, peek_latin1_codepoint):
(peek_iconv_codepoint, peek_codepoint): Refactor to push error
handling to the leaves, where errors happen. Just return
the (possibly substituted) codepoint, without an error code; if
there's really an error, we should raise it.
(scm_getc, scm_peek_char): Adapt.
* libguile/ports.c (scm_getc): If the port conversion strategy is
'error, signal an error before advancing the read pointer. This is a
change from previous behavior; before, we advanced the read pointer
under an understanding that that was what R6RS required. But, that
seems to be not the case.
* test-suite/tests/ports.test ("string ports"): Update decoding-error
tests to assume that read-char with an error doesn't advance the read
pointer.
* test-suite/tests/rdelim.test ("read-line"): Likewise.
* libguile/ports.c (scm_specialize_port_encoding_x)
(scm_port_clear_stream_start_for_bom_read): New functions exported
to (ice-9 ports).
* module/ice-9/ports.scm (clear-stream-start-for-bom-read):
(fill-input, peek-char-and-len): Rework to handle BOM in fill-input
instead of once per peek-char.
* libguile/print.c (display_string_using_iconv): Remove BOM handling;
this is now handled by scm_lfwrite.
* libguile/ports.c (open_iconv_descriptors): Refactor to take encoding
as a symbol.
(prepare_iconv_descriptors): New helper.
(scm_i_port_iconv_descriptors): Remove scm_t_port_rw_active argument,
and don't sniff UTF-16/UTF-32 byte orders here. Instead BOM handlers
will call prepare_iconv_descriptors.
(scm_c_read_bytes): Call new port_clear_stream_start_for_bom_read
helper.
(port_maybe_consume_initial_byte_order_mark)
(scm_port_maybe_consume_initial_byte_order_mark): Remove. Leaves
Scheme %peek-char broken but it's unused currently so that's OK.
(peek_iconv_codepoint): Fetch iconv descriptors after doing fill-input
because it's fill-input that will sniff the BOM.
(peek_codepoint): Instead of handling BOM at every character, handle
in fill-input instead.
(maybe_consume_bom, port_clear_stream_start_for_bom_read)
(port_clear_stream_start_for_bom_write): New helpers.
(scm_fill_input): Slurp a BOM if needed.
(scm_i_write): Clear the start-of-stream-for-bom-write flag.
(scm_lfwrite): Write a BOM if needed.
* libguile/ports.h (scm_sys_port_encoding, scm_sys_set_port_encoding):
New functions, to expose port encodings as symbols directly to (ice-9
ports).
(scm_port_maybe_consume_initial_byte_order_mark): New function.
* libguile/ports.c (scm_port_encoding): Dispatch to %port-encoding.
(scm_set_port_encoding_x): Dispatch to %set-port-encoding!.
(port_maybe_consume_initial_byte_order_mark): New helper, factored out
of peek_codepoint.
(scm_port_maybe_consume_initial_byte_order_mark, peek_codepoint): Call
port_maybe_consume_initial_byte_order_mark.
* module/ice-9/ports.scm (port-encoding): Implement in Scheme.
* libguile/ports.h (scm_t_port): Represent the conversion strategy as a
symbol, to make things easier for Scheme. Rename to
"conversion_strategy".
(scm_c_make_port_with_encoding): Change to take encoding and
conversion_strategy arguments as symbols.
(scm_i_string_failed_conversion_handler): New internal helper, to turn
a symbol to a scm_t_string_failed_conversion_handler.
(scm_i_default_port_encoding): Return the default port encoding as a
symbol.
(scm_i_default_port_conversion_strategy)
(scm_i_set_default_port_conversion_strategy): Rename from
scm_i_default_port_conversion_handler et al. Take and return Scheme
symbols.
* libguile/foreign.c (scm_string_to_pointer, scm_pointer_to_string): Use
scm_i_default_string_failed_conversion_handler instead of
scm_i_default_port_conversion_handler.
* libguile/print.c (PORT_CONVERSION_HANDLER): Update definition.
(print_normal_symbol): Use PORT_CONVERSION_HANDLER.
* libguile/r6rs-ports.c (make_bytevector_input_port):
(make_custom_binary_input_port, make_bytevector_output_port): Adapt to
changes in scm_c_make_port_with_encoding.
* libguile/strings.h:
* libguile/strings.c (scm_i_default_string_failed_conversion_handler):
New helper.
(scm_from_locale_stringn, scm_from_port_stringn):
(scm_to_locale_stringn, scm_to_port_stringn): Adapt to interface
changes.
* libguile/strports.c (scm_mkstrport): Adapt to
scm_c_make_port_with_encoding change.
* libguile/ports.c (scm_c_make_port): Adapt to
scm_c_make_port_with_encoding change.
(ascii_toupper, encoding_matches, canonicalize_encoding): Move down in
the file.
(peek_codepoint, get_codepoint, scm_ungetc): Adapt to port conversion
strategy change. Remove duplicate case in get_codepoint.
(scm_init_ports): Move symbol initializations to the same place.
* libguile/ports-internal.h (scm_t_port_internal): Remove encoding_mode
member.
* libguile/ports.h (scm_t_port): "encoding" member is now a SCM symbol.
* libguile/ports.c (scm_init_ports): Define symbols for the encodings
that we handle explicitly.
(encoding_matches): Adapt to check against an encoding as a symbol.
(canonicalize_encoding): Return an encoding as a symbol.
(scm_c_make_port_with_encoding, scm_i_set_default_port_encoding)
(decide_utf16_encoding, decide_utf32_encoding)
(scm_i_port_iconv_descriptors, scm_i_set_port_encoding_x)
(scm_port_encoding, peek_codepoint, scm_ungetc): Adapt to encoding
change.
* libguile/print.c (display_string_using_iconv, display_string):
* libguile/read.c (scm_read_character):
* libguile/strings.c (scm_from_port_stringn, scm_to_port_stringn): Adapt
to port encoding change.
* libguile/ports.c (scm_i_set_pending_eof): Remove now-unused helper.
(peek_utf8_codepoint, peek_latin1_codepoint, peek_iconv_codepoint):
(peek_codepoint): Refactor the fundamental character readers in Guile
to peek into the read buffer instead of reading then unreading. This
will allow Scheme to use the port buffer to convert, when we port this
to Scheme.
(get_codepoint): Use peek_codepoint.
(scm_getc): Adapt.
(scm_peek_char): Use peek_codepoint.
* libguile/ports.h (scm_fill_input): Add "minimum_size" argument. Adapt
all callers to pass 0 as this argument.
* libguile/ports.c (scm_i_read): Inline into scm_fill_input.
(scm_fill_input): "minimum_size" argument ensures that there are a
certain number of bytes available, or EOF. Instead of shrinking the
read buffer, only fill by the read_buffering amount, or the
minimum_size, whichever is larger.
* libguile/r6rs-ports.c:
* libguile/read.c: Adapt scm_fill_input callers.
* libguile/ports.c (trampoline_to_c_read, trampoline_to_c_write): Since
C might assume that the indices are within bounds of the bytevector,
verify them more here.
(scm_port_random_access_p, scm_port_read_buffering)
(scm_set_port_read_buffer, scm_port_read, scm_port_write): New helpers
exposed to (ice-9 ports).
(scm_port_read_buffer, scm_port_write_buffer): Don't flush or validate
port mode; we do that in Scheme.
* module/ice-9/ports.scm: Implement enough of port machinery to
implement peek-byte in Scheme. Not yet exported.
* libguile/ports.c (scm_init_ice_9_ports): Define the-eof-object here.
Update a comment.
* module/ice-9/ports.scm: Use the-eof-object definition from C.
* libguile/ports.h (scm_t_ptob_descriptor): Add "scm_read" and
"scm_write" members, for calling from Scheme.
(scm_set_port_scm_read, scm_set_port_scm_write): New procedures.
* libguile/ports.c (trampoline_to_c_read_subr)
(trampoline_to_c_write_subr): New static variables.
* libguile/ports.c (scm_make_port_type): Initialize scm_read and
scm_write members to trampoline to C.
(trampoline_to_c_read, trampoline_to_scm_read)
(trampoline_to_c_write, trampoline_to_scm_write): New helpers.
(scm_set_port_scm_read, scm_set_port_scm_write): New functions.
(default_buffer_size): Move definition down.
(scm_i_read_bytes, scm_i_write_bytes): Use new names for read and
write procedures.
(scm_init_ports): Initialize trampolines.
* libguile/ports.c (scm_peek_char): Optimize. A loop calling peek-char
on a buffered string port 10e6 times goes down from 50ns/iteration to
32ns/iteration.
* libguile/ports.h (scm_unget_bytes_unlocked, scm_unget_byte_unlocked):
Remove.
* libguile/ports.c (looking_at_bytes): Use scm_unget_bytes instead of
scm_i_unget_bytes_unlocked
(scm_unget_bytes): Rename from scm_i_unget_bytes_unlocked. Remove
other implementations of this function.
(scm_unget_byte): Likewise.
(scm_ungetc_unlocked, scm_peek_char): Use scm_unget_byte.
* libguile/read.c (read_token): Use scm_unget_byte.
* libguile/ports.h (scm_getc_unlocked): Remove, or rather rename to
scm_getc. This probably introduces some thread-related bugs but we'll
fix them in a different way.
* libguile/ports.c (scm_getc): Rename from scm_getc_unlocked, replacing
the locky implementation.
(scm_read_char): Use scm_getc.
* libguile/r6rs-ports.c (scm_get_string_n_x): Use scm_getc.
* libguile/rdelim.c (scm_read_delimited_x, scm_read_line): Use
scm_getc.
* libguile/read.c: Use scm_getc.
* libguile/ports.h (scm_flush_unlocked, scm_end_input_unlocked):
Remove.
* libguile/ports.c (scm_c_read_bytes_unlocked):
(scm_i_unget_bytes_unlocked, scm_setvbuf, scm_force_output)
(scm_fill_input_unlocked, scm_c_write_bytes_unlocked)
(scm_c_write_unlocked, scm_lfwrite_unlocked, scm_seek)
(scm_truncate_file, flush_output_port): Call scm_flush / scm_end_input
instead of the _unlocked variants.
(scm_end_input): Lock while discarding the input buffer but not while
calling out to the seek function.
* libguile/filesys.c (scm_fsync):
* libguile/ioext.c (scm_redirect_port):
* libguile/read.c (scm_i_scan_for_encoding):
* libguile/rw.c (scm_write_string_partial): Use scm_flush, not
scm_flush_unlocked.
* libguile/ports.h (scm_c_read_unlocked): Remove.
* libguile/ports.c (scm_c_read): Rename from scm_c_read_unlocked.
Remove old scm_c_read. Lock around access to the rw_active flag, and
call scm_flush instead of scm_flush_unlocked, and scm_fill_input
instead of scm_fill_input_unlocked.
* libguile/read.c (scm_i_scan_for_encoding): Use scm_c_read instead of
the _unlocked function.
