2008-07-25  Ben Pfaff  <blp@gnu.org>

	* casereader-translator.c (struct casereader_arithmetic_sequence):
	New struct.
	(casereader_create_arithmetic_sequence): New function.
	(cas_translate): New function.
	(cas_destroy): New function.

2008-07-26  John Darrington <john@darrington.wattle.id.au>

	* case-ordering.c case-ordering.h: Removed the value_cnt
	associated with the ordering structure.

2008-07-16  Jason Stover  <jhs@math.gcsu.edu>

	* category.c (cat_get_category_count): New function.

2008-05-15  Ben Pfaff  <blp@gnu.org>

	Patch #6512.

	* data-out.c (output_infinite): Use gsl_isnan instead of isnan,
	and gsl_isinf instead of isinf, as a stopgap measure for
	portability until appropriate gnulib modules are available.

	* por-file-writer.c (format_trig_double): Similarly, use
	gsl_finite instead of finite.

2008-03-18  John Darrington <john@darrington.wattle.id.au>

	* data-in.c: If category is custom currency, then use
	numeric format for input.

2008-03-06  Ben Pfaff  <blp@gnu.org>

	* dictionary.c (var_name_is_insertable): New function.
	(make_hinted_name): Don't accept variable names that match PSPP
	keywords.  Thanks to Jason Stover for reporting the problem.

2008-03-06  Ben Pfaff  <blp@gnu.org>

	* format-guesser.c (syntax): Require month names to be spelled out
	as English words, so that single characters that happen to be
	Roman numerals don't get detected as months.  Thanks to John
	Darrington for reporting this bug.

2008-03-04  Ben Pfaff  <blp@gnu.org>

	Patch #6441.  Reviewed by John Darrington.

	* format.c (fmt_fix): New function.
	(fmt_fix_input): New function.
	(fmt_fix_output): New function.

	* format.def: Correct minimum width for DATETIME format.  It was
	7, should have been 17.

	* automake.mk: Add new files.

	* format-guesser.c: New file.

	* format-guesser.h: New file.

2008-02-18  Ben Pfaff  <blp@gnu.org>

	Patch #6426.  Reviewed by John Darrington.
	
	* format.c (min_width): Renamed fmt_min_width and made public.
	Updated all references.
	(max_width): Renamed fmt_max_width and made public.  Updated all
	references.
	(max_decimals): Renamed fmt_max_decimals and made public.  Updated
	all references.
	(var_create): Use the new functions for default variable
	attributes below.
	(var_default_formats): New function.
	(var_default_measure): New function.
	(var_default_alignment): New function.

	* format.h (macro FMT_MAX_NUMERIC_WIDTH): New macro.

2008-02-09  Ben Pfaff  <blp@gnu.org>

	Add a couple of extensions to GET DATA TYPE=TXT.  Patch #6412.
	Thanks to John Darrington for review.

	* data-in.c (data_in): Add new argument to designate the last
	column of the data field being parsed, for use in error messages.
	Update all callers.

	* data-parser (struct data_parser): New member `quote_escape'.
	(data_parser_create): Initialize quote_escape.
	(data_parser_set_quotes): New function.
	(cut_field): Support escaped quotes.
	(parse_delimited_span): Ditto.
	(parse_delimited_no_span): Ditto.

	* get-data.c (parse_get_txt): Support ESCAPE extension subcommand
	in enhanced mode.  Only support multiple quote characters in
	enhanced mode.

2008-02-06  John Darrington <john@darrington.wattle.id.au>

	psql-reader.c psql-reader.h: Read more than one tuple at
	once.  Fix bug reading a query which returns no data. Fix bug
	when transformation followed a reader.
	Ask the server for the number of records in the query, for the
	benefit of the gui.

2008-02-05  John Darrington <john@darrington.wattle.id.au>

	psql-reader.c: So yesterday they release postgresql 8.3.0
	which has money represented with 64 bits.  They must get
	paid more than me.

2008-02-02  John Darrington <john@darrington.wattle.id.au>

	psql-reader.c psql-reader.h: New files.  Thanks to Ben Pfaff
	for reviewing this code.
	
2008-02-02  Ben Pfaff  <blp@gnu.org>

	Patch #6347.

	* sys-file-reader.c (read_variable_record): Allow missing values
	to be specified on long string variables, but warn about them
	because PSPP does not yet support them.
	(read_extension_record): Ignore extension records 20 and 21, which
	PSPP does not yet support.
	(read_header): Fix error message when floating-point format cannot
	be identified.

2008-02-01  Ben Pfaff  <blp@gnu.org>

	Patch #6386.  Thanks to John Darrington for review and for the
	updates to gnumeric-reader.c.

	* dictionary.c (make_hinted_name): New function.
	(make_numeric_name): New function.
	(dict_make_unique_var_name): New function.

	* gnumeric-reader.c (devise_name): Removed.
	(munge_name): Removed.
	(gnumeric_open_reader): Use new function
	dict_make_unique_var_name.

	* short-names.c (set_var_short_name_suffix): Use new function
	str_format_26adic.

2008-01-19  John Darrington <john@darrington.wattle.id.au>

	* settings.c settings.h: Moved static variables into a 
	single struct.  Renamed functions to have a settings_ prefix.

2008-01-14  John Darrington <john@darrington.wattle.id.au>

	* data-out.c (output_AHEX): Corrected number of bytes in
	call to output_hex.  Closes bug #22011

2008-01-02  John Darrington <john@darrington.wattle.id.au>

	* variable.c variable.h: Replaced var_get_value_name with 
	var_append_value_name which doesn't use any static data.
        Thanks to Ben for review.

2007-12-07  Ben Pfaff  <blp@gnu.org>

	Patch #6302.

	* casegrouper.c (casegrouper_get_next_group): Cause a casegrouper
	made from an empty casereader produce a casegrouper with no
	groups, instead of one with one group that has no cases.

	* casereader.c (casereader_is_empty): New function.

2007-12-06  Ben Pfaff  <blp@gnu.org>

	Patch #6303.

	* sys-file-reader.c (read_display_parameters): Handle variable
	display parameters record with only 2 data items per variable.
	Reported by Guido Gay <gay@irer.it>.

2007-12-04  Ben Pfaff  <blp@gnu.org>

	* identifier.c (lex_id_match_n): New function.
	(lex_id_match): Reimplement in terms of lex_id_match_n.

2007-11-24  Ben Pfaff  <blp@gnu.org>

	* automake.mk (src_data_libdata_a_SOURCES): Add val-type.h, to fix
	make distcheck.

2007-11-24  Ben Pfaff  <blp@gnu.org>

	Fix warning reported when reading back system files that include
	very long string variables.  Thanks to Guido Gay <gay@irer.it> for
	reporting this bug.

	* short-names.c (short_names_assign): Fix dumb typo, in which `i'
	was written where `j' was meant.

2007-11-18  Ben Pfaff  <blp@gnu.org>

	Properly write variables that include a range of missing values to
	system files.  Thanks to Guido Gay <gay@irer.it> for reporting
	this bug.

	* sys-file-writer.c (write_variable): Correctly calculate
	n_missing_values field when writing variables that include a range
	of missing values.

2007-11-10  Ben Pfaff  <blp@gnu.org>

	Cleanups and bug fixes devised while writing up documentation.
	Patch #6262.

	* automake.mk (src_data_libdata_a_SOURCES): Add new files.

	* dict-class.c: New file.
	(dict_class_from_id): Move here.
	(dict_class_to_name): Move here.

	* dict-class.h: New file.
	(enum dict_class): Move here.  Change from consecutive integers to
	consecutive bits, to make testing for any of multiple values
	easier.  Add new DC_ALL constant.

	* dictionary.c (struct dictionary): Change `case_limit' from
	size_t to casenumber.
	(dict_get_vars): Make final argument an enum dict_class.
	(dict_get_vars_mutable): Ditto.
	(dict_get_case_limit): Change return value to casenumber.
	(dict_set_case_limit): Change final argument to a casenumber.
	(dict_unset_split_var): Add assertion.  Rephrase slightly.
	(dict_set_label): Use xstrndup to simplify.

	* format.c (fmt_step_width): AHEX format also needs 2-byte
	stepping.
	(fmt_set_style): Simplify assertions.

	* missing-values.c (mv_add_num_range): Rename mv_add_range.
	Simplify implementation.
	(mv_has_value): Simplify implementation.
	(mv_pop_value): Remove the first value, not the last, to avoid
	having GET followed by SAVE reverse the order of missing values.
	(mv_peek_value): Rename mv_get_value.  Simplify assertion.
	(mv_has_range): Simplify implementation.
	(mv_peek_range): Rename mv_get_range.
	(can_resize_string): Removed.
	(mv_is_resizable): Use value_is_resizable.
	(mv_resize): Use value_resize.

	* short-names.h (SHORT_NAME_LEN): Move here.

	* val-type.h: New file, for definitions related to type and width
	of abstract values.  Before, these definitions were mixed among
	those related to "union value" and those related to variables.
	(macro SYSMIS): Move here.
	(macro LOWEST): Move here.
	(macro HIGHEST): Move here.
	(macro MAX_STRING); Move here.
	(enum val_type): New enum with values VAL_NUMERIC and VAL_STRING.
	Replaces enum var_type that had values VAR_NUMERIC and VAR_STRING.
	All references updated.
	(val_type_is_valid): New function.  Replaces var_type_is_valid.
	All references updated.
	(val_type_from_width): New function.  Replaces
	var_type_from_width.  All references updated.

	* value-labels.c (val_labs_copy): Renamed val_labs_clone.  All
	references updated.
	(val_labs_can_set_width): Use value_is_resizable.
	(val_labs_add): Simply return false if the value labels set is too
	wide, instead of having undefined behavior.
	(val_labs_replace): Ditto.
	(val_labs_replace): Ditto.
	(val_labs_first): Set iterator to null if iteration is complete.
	(val_labs_first_sorted): Ditto.
	(val_labs_done): Become a no-op if the iterator is null.

	* value.c (value_is_resizable): New function.
	(value_resize): New function.

	* variable.c (var_get_dict_class): New function.

	* variable.h (macro LONG_NAME_LEN): Rename VAR_NAME_LEN.  Update
	all references.

2007-11-08  Ben Pfaff  <blp@gnu.org>

	* data-in.c: Make formatted data parsing locale-independent.
	(parse_number): Use c_strtod instead of strtod, to avoid
	locale-specific behavior.
	(parse_Z): Ditto.

2007-11-06  Ben Pfaff  <blp@gnu.org>

	Patch #6256: add support for binary, 360 file formats.  Reviewed
	by John Darrington.

	* data-in.c (struct data_in): Add `encoding' member.
	(data_in): Add `encoding' parameter, and re-encode the data passed
	in where appropriate.  Update all callers to pass it in.
	(parse_A): Implement EBCDIC recoding wart described in manual.
	(parse_AHEX): Implement EBCDIC recoding.

	* data-out.c (data_out_legacy): New function.
	(data_out): Make into a wrapper around data_out_legacy.

	* file-handle-def.c (struct file_handle): New member `encoding'.
	(fh_create_file): Set encoding.
	(fh_default_properties): Set default encoding.
	(fh_get_legacy_encoding): New function.

	* file-handle-def.h (enum fh_mode): New modes FH_MODE_FIXED
	(that replaces FH_MODE_BINARY), FH_MODE_VARIABLE,
	FH_MODE_360_VARIABLE, FH_MODE_360_SPANNED.
	(struct fh_properties): New member `encoding'.

2007-11-05  Ben Pfaff  <blp@gnu.org>

	Patch #6258.  Reviewed by John Darrington.

	* file-handle-def.c (fh_lock): Add comment that TYPE should be
	marked with N_() in the caller.  Added these markings to each
	caller too.  Should make i18n easier.
	Suggested by Chusslove Illich <caslav.ilic@gmx.net>.

2007-11-03  Ben Pfaff  <blp@gnu.org>

	Allow output files to overwrite input files (bug #21280).

	* file-handle-def.c: Separate locking of files for input and for
	output, to allow both to take place at once.  Also, distinguish a
	file handle from the identity of the underlying file, because the
	identity of a file changes over time and the file handle can't
	represent two different identities.
	(struct file_handle): Remove `next', `open_cnt', `deleted',
	`type', `open_mode', `aux', `identity' members.  Change `id' from
	char array to char *.  Add `ref_cnt' member.
	(file_handle_from_ll) New function.
	(file_handles) Removed.
	(named_handles) New variable.
	(fh_init) Initialize named_handles.
	(fh_done) Remove name from all named_handles.
	(free_handle) Updated for modified struct file_handle.
	(unname_handle) New function.
	(fh_ref) New function.
	(fh_from_file_name) Removed.
	(fh_unref) New function.
	(fh_unname) New function.
	(fh_from_id) Rewritten.
	(create_handle) Updated for modified struct file_handle.
	(fh_inline_file) Increment the handle's ref count.
	(fh_create_file) Updated for modified struct file_handle.
	(fh_create_scratch) Ditto.
	(fh_free) Removed.
	(mode_name) Removed.
	(fh_open) Removed.
	(fh_close) Removed.
	(fh_is_open) Removed.
	(fh_get_id) Updated for modified struct file_handle.
	(fh_get_default_handle) Increment the handle's ref count.
	(fh_set_default_handle) Handle ref counts.
	(struct fh_lock) New structure.
	(locks) New static var.
	(fh_lock) New function.
	(fh_unlock) New function.
	(fh_lock_get_aux) New function.
	(fh_lock_set_aux) New function.
	(fh_is_locked) New function.
	(make_key) New function.
	(free_key) New function.
	(compare_fh_locks) New function.
	(hash_fh_lock) New function.

	* file-handle-def.h (enum fh_access) New enum.

	* file-name.c: Made file_identity the same in all supported
	environments.
	(struct file_identity): New `name' member.
	(fn_get_identity): For a file that doesn't exist, get the
	dev/inode of its directory plus its name.  If even the directory
	doesn't exist, just use its name.  Merge the Windows
	implementation into the Unix one.
	(fn_compare_file_identities): Rewritten.  Merge the Windows
	implementation into the Unix one.
	(fn_hash_identity): New function.

	* make-file.c (struct replace_file): New structure.
	(all_files): New static var.
	(replace_file_start): New function.
	(replace_file_commit): New function.
	(replace_file_abort): New function.
	(free_replace_file): New function.
	(unlink_replace_files): New function.

	* por-file-reader.c (struct pfm_reader): Add `lock' member.
	(close_reader): Unlock file.
	(pfm_open_reader): Lock file.

	* por-file-writer.c (struct pfm_writer): Add fh_lock, replace_file
	members.
	(pfm_open_writer): Lock file and prepare for its replacement.
	(close_writer): Unlock file.

	* scratch-handle.h (struct scratch_handle): Add unique_id so that
	different generations of a scratch file can be distinguished.

	* scratch-reader.c (scratch_reader_open): Verify that the file is
	a scratch file.

	* scratch-writer.c (struct scratch_writer): Add `lock' and `dict',
	remove scratch_handle member.
	(scratch_writer_open): Lock handle.  Prepare to replace handle
	data, instead of doing it immediately.
	(scratch_writer_casewriter_destroy): Replace handle data and
	unlock handle.

	* sys-file-reader.c (struct sfm_reader): Add `lock' member.
	(sfm_open_reader): Lock file.
	(close_reader): Unlock file.

	* sys-file-writer.c (struct sfm_writer): Add fh_lock, replace_file
	members.
	(sfm_open_writer): Lock file and prepare for its replacement.
	(close_writer): Unlock file.

2007-11-02  Ben Pfaff  <blp@gnu.org>

	* data-out.c (output_number): Use isfinite (from C99) instead of
	gsl_isfinite, since we now have universal support for it in
	gnulib.
	(output_infinite): Ditto.
	[!HAVE_ROUND] (round): Remove definition, since we now have a
	replacement in gnulib.

2007-10-27  John Darrington <john@darrington.wattle.id.au>

	* dictionary.c: Fixed bug in dict_clone, where the vardict.dict member
	wasn't initialised correctly. Closes bugs #21330 and 21397


2007-10-08  Ben Pfaff  <blp@gnu.org>

	Fix bug #21280.  Thanks to John Darrington for review.

	* file-name.c (create_stream): New function.

	* por-file-writer.c (pfm_open_writer): Use fh_open to open the
	file handle before creating the file, to ensure that we don't
	truncate a file that we're reading.  Make code easier to read by
	using create_stream.

	* sys-file-write.c (sfm_open_writer): Ditto.

2007-10-01  Ben Pfaff  <blp@gnu.org>

	Fix bug #21192.  Thanks to John Darrington for review.

	* casereader.c (casereader_read): Decrement case_cnt before
	calling the casereader's "read" member function, so that we
	interact properly with lazy_casereader.

	* datasheet.c: Add regression test for above bug fix.
	(clone_datasheet): New function.
	(lazy_callback): New function.
	(check_datasheet_casereader): New function.
	(check_datasheet): Check datasheet contents are reported correctly
	through an ordinary casereader and a lazy casereader.
	(clone_model): Use clone_datasheet.

2007-09-24  Ben Pfaff  <blp@gnu.org>

	Patch #6210.  Reviewed by John Darrington.
	* settings.c: Drop "long view", which is not needed any longer.
	(static var long_view): Removed.
	(force_long_view): Removed.
	(get_viewwidth): Removed.
	(init_viewport): Removed long_view reference.

2007-09-19  John Darrington <john@darrington.wattle.id.au>
	
	* settings.c settings.h: Changed viewport's length and width to be 
	owned by the user interface which uses the data library.  This allows
	better abstraction, and makes dynamically adjustable dimensions easier.
	
2007-09-18  Ben Pfaff  <blp@gnu.org>

	* procedure.c (proc_extract_active_file_data): New function.

	* lazy-casereader.h: New file.

	* lazy-casereader.c: New file.

	* casereader.c (casereader_dynamic_cast): New function.

2007-09-14  Ben Pfaff  <blp@gnu.org>

	* dictionary.c (dict_clone): Copy case indexes from cloned
	dictionary.  Fixes bug #21061.  Reviewed by John Darrington.

2007-09-13  John Darrington <john@darrington.wattle.id.au>

	* value.c value.h (create_value): New function.

2007-09-12  Ben Pfaff  <blp@gnu.org>

	Make it clear that translator casereader and casewriter translate
	functions are supposed to destroy their input case.
	
	* casereader-translator.c (struct casereader_translator): Change
	input case parameter of translate member function from const
	struct ccase * to struct ccase *.
	(casereader_create_translator): Ditto, for translate parameter.

	* casewriter-translator.c (struct casewriter_translator): Ditto.
	(casewriter_create_translator): Ditto.

2007-08-27  John Darrington <john@darrington.wattle.id.au>
	
	* sys-file-reader.c (read_display_parameters): Force display width 
	to 8, if the sys file says 0 (like SPSS does).

2007-08-12  Ben Pfaff  <blp@gnu.org>

	* dictionary.c (dict_dump): New function.

2007-08-12  Ben Pfaff  <blp@gnu.org>

	Drop dict_compactor in favor of using the new struct case_map.

	* dictionary.c (struct copy_map): Removed.
	(struct dict_compactor): Removed.
	(dict_make_compactor): Removed.
	(dict_compactor_compact): Removed.
	(dict_compactor_destroy): Removed.

	* procedure.c (struct data_set): Change `compactor' member to be a
	struct case_map *.
	(proc_open): Use case_map_to_compact_dict instead of
	dict_make_compactor.
	(proc_casereader_read): Use case_map_execute instead of
	dict_compactor_compact.
	(proc_commit): Use case_map_destroy instead of
	dict_compactor_destroy.

	* scratch-writer.c (struct scratch_writer): Change `compactor'
	member to be a struct case_map *.
	(scratch_writer_open): Use case_map_to_compact_dict instead of
	dict_make_compactor.
	(scratch_writer_casewriter_write): Use case_map_execute instead of
	dict_compactor_compact.

2007-08-12  Ben Pfaff  <blp@gnu.org>

	* automake.mk: Add case-map.c, case-map.h.

	* case-map.c: New file.

	* case-map.h: New file.

2007-08-12  Ben Pfaff  <blp@gnu.org>

	* dictionary.c (dict_compact_values): Don't delete scratch
	variables as well as compacting case indexes.  Update all callers.
	(dict_get_compacted_value_cnt): Rename dict_count_values and
	change interface.  Update all callers.
	(dict_get_compacted_value_cnt): Remove.
	(dict_compacting_would_shrink): Remove.
	(dict_compacting_would_change): Remove.
	(dict_make_compactor): Add new parameter.  Update all callers.
	
	* procedure.c (proc_casereader_read): Use casewriter_get_value_cnt
	instead of dict_count_values, changing an O(N) operation into
	O(1).

2007-08-12  Ben Pfaff  <blp@gnu.org>

	* casereader.c (casereader_read): Don't require cases read by a
	casereader to be exactly the expected size: as long as they're big
	enough, it's OK.

2007-08-12  Ben Pfaff  <blp@gnu.org>

	Make casewriters keep track of the number of `union value's in
	each case.  This is useful for two reasons: casewriter_write can
	then check that the case being written is large enough, and later
	recipients of the casewriter can determine the size of the case.
	
	* casewriter-translator.c (casewriter_create_translator): Add
	value_cnt parameter.
	
	* casewriter.c (struct casewriter): Add value_cnt member.
	(casewriter_write): Check that the case passed in is big enough.
	(casewriter_get_value_cnt): New function.
	(casewriter_create): Add value_cnt parameter.

2007-08-09  Ben Pfaff  <blp@gnu.org>

	Fix bug reported by Jason Stover.
	* settings.c: Move get_termcap_viewport and in particular the
	#include for <curses.h> to the end of the file.  curses.h
	redefines bool on some systems (e.g. OpenBSD), which causes
	disagreement between uses of bool before its inclusion and
	afterward.
	Tested by Jason Stover.

2007-07-29  Ben Pfaff  <blp@gnu.org>

	Provisional fix for bug #18692 and bug #20161.  Reviewed by John
	Darrington.

	* file-name.c (fn_open): Only pass "r" or "w" to popen as mode
	argument (never "rb" or "wb") because SUSv3 says that only those
	modes are defined, and glibc in fact rejects other modes.

	Open portable files with fn_open so that they can be read from
	pipes.  Fix missing fh_close call to go along with fh_open.
	Report an error if the file close reports an error.
	* por-file-reader.c (close_reader): New function.
	(por_file_casereader_destroy): Use close_reader.
	(pfm_open_reader): Open file with fn_open.

2007-07-28  Ben Pfaff  <blp@gnu.org>

	Make PSPP able to read all the portable files I could find on the
	web.  Thanks to John Darrington for review.  Bug #17620.
	* por-file-reader.c (struct pfm_reader): New member `line_length'.
	(error): Print file offset in hexadecimal.
	(warning): New function.
	(advance): Treat lines less than 80 bytes long as padded to 80
	bytes with spaces.
	(pfm_open_reader): Call read_documents if we find an "E" record.
	(convert_format): Convert invalid formats to the default format
	instead of aborting reading the file.
	(read_variables): Rename duplicate variable names instead of
	aborting reading the file.
	(read_value_label): Allow string variables of different widths to
	be assigned value labels in the same record.  Replace duplicate
	value labels instead of aborting.
	(read_documents): New function.

	* por-file-writer.c (pfm_open_writer): Call write_documents if the
	dictionary has documents.
	(write_documents): New function.

2007-07-25  Ben Pfaff  <blp@gnu.org>

	Fix bugs related to bug #17213.

	* settings.c: Use HAVE_LIBNCURSES instead of HAVE_LIBTERMCAP,
	since the former is what config.h has.  Include the needed ncurses
	headers.
	(static var echo) Rename to `do_echo' because the original name is
	the same as an ncurses identifier.
	(get_termcap_viewport) Use error instead of msg.

	* file-name.c (fn_interp_vars): Fix interpolation of $VARS.
	(fn_close): Don't close stdin, stdout, stderr.

2007-07-26 John Darrington <john@darrington.wattle.id.au>

	* procedure.c procedure.h: Added callbacks which get invoked whenever 
	a dataset's transformation chain changes.

2007-07-24  Ben Pfaff  <blp@gnu.org>

	Fix bug #6113.
	* sys-file-writer.c (write_variable_display_parameters): Use new
	var_default_display_width function to choose display width of
	segments after the first one in a given variable.
	* variable.c (var_create): Use var_default_display_width to pick
	new variable's display width.
	(var_default_display_width): New function.
	Reviewed by John Darrington.

2007-07-24  Ben Pfaff  <blp@gnu.org>

	Fix bug #20427.
	* por-file-writer.c (write_variables): Write weight variable.
	Reviewed by John Darrington.

2007-07-23  Ben Pfaff  <blp@gnu.org>

	Improvements to system file reader and writer.
	
        First, move all detailed knowledge of very long strings into
	sys-file-private.[ch], so that this nasty stuff can be isolated.

	* sys-file-private.c (REAL_VLS_CHUNK): New macro.
	(EFFECTIVE_VLS_CHUNK): New macro.
	(min_int): New function.
	(max_int): New function.
	(sfm_width_to_bytes): Rewrite.
	(sfm_width_to_octs): New function.
	(sfm_segment_alloc_width): New function.
	(sfm_segment_alloc_bytes): New function.
	(sfm_segment_used_bytes): New function.
	(sfm_segment_offset): New function.
	(sfm_segment_effective_offset): New function.
	(sfm_dictionary_to_sfm_vars): New function.

	* sys-file-private.h (MIN_VERY_LONG_STRING): Removed.
	(EFFECTIVE_LONG_STRING_LENGTH): Removed.
	(struct sfm_var): New structure.

        Next, improvements to the system file reader.

	* sys-file-reader.h (struct sfm_read_info): Changed `case_cnt' to
	type casenumber.  Added `version_major', `version_minor',
	`version_revision'.

	* sys-file-reader.c (struct sfm_reader): Replaced `flt64_cnt' by
	`oct_cnt'.  Rename `vars', `var_cnt' to `sfm_vars', `sfm_var_cnt'.
	Change `case_cnt' to type casenumber.  Removed `has_vls'.
	(struct sfm_var): Removed.
	(sfm_open_reader): Don't warn on wrong case size if the file was
	written by SPSS 13, which tends to get it wrong.  Use
	sfm_dictionary_to_sfm_vars.
	(read_header): Always output system file info.
	(read_variable_record): Simplify code for reading missing values.
	(read_machine_int32_info): Save version numbers from system file
	into info struct passed as new argument.
	(read_long_string_map): Restructured to use new sys-file-private
	functions.
	(read_value_labels): Use size_overflow_p.
	(sys_file_casereader_read): Get rid of distinction between fast
	and slow paths.  Use information provided by sys-file-primate's
	struct sfm_var to simplify code.
	(skip_whole_strings): New function.
	(read_int32): Renamed read_int.  Changed return value to int.
	Updated all callers.
	(read_flt64): Renamed read_float.  Changed return value to
	double.  Updated all callers.
	(int32_to_native): Removed.  Changed callers to use
	integer_convert.
	(flt64_to_double): Removed.  Changed callers to use float_convert.
	
        Finally, get rid of int32, flt64 terminology and types in system
	file writer.  The former wasn't very useful since a POSIX "int"
	can hold the whole range of int32 and we generally didn't have a
	need for it to be exactly-32-bits, just at-least-32-bits.  The
	latter was inconvenient because we had to assume that it could be
	different from double and thereby convert special values SYSMIS,
	HIGHEST, LOWEST to and from it in multiple places.  Instead, now
	we just use "int" and "double" in most places, and do conversions,
	if necessary, very close to where we do I/O.  This change meant
	that the writer code couldn't represent records in the file as C
	structs any longer, but that's no great loss.  The code actually
	seems to be more readable without them.

	Simplify the compression buffering code: only buffer as much as
	necessary, which is no more than eight 8-byte units at any given
	time.

	* sys-file-writer.c (typedef flt64): Removed.
	(macro second_lowest_flt64): Removed.
	(struct sysfile_header): Removed.
	(struct sysfile_variable): Removed.
	(struct sfm_writer): Removed `needs_translation', `has_vls',
	`flt64_cnt'.  Changed `compress' to type bool and `case_cnt' to
	type casenumber.  Renamed `vars' to `sfm_vars', `var_cnt' to
	`sfm_var_cnt'.  Replaced `buf', `end', `ptr', `x', `y' for
	compression buffering by `opcodes', `opcode_cnt', `data',
	`data_cnt'.  Renamed `var_cnt_vls' as `segment_cnt'.
	(sfm_open_writer): Use sfm_dictionary_to_sfm_vars.  Use simple
	data writer functions instead of structures.
	(calc_oct_idx): New function.
	(write_header): Use simple data writer functions instead of
	structures.
	(write_format_spec): Renamed write_format.  New argument.
	(write_variable_continuation_records): New function.
	(write_variable): Use simple data writer functions instead of
	structures.  Use write_variable_continuation_records.  Write
	entire very long string instead of requiring caller to understand
	them.
	(write_value_labels): Use simple data writer functions instead of
	structures.
	(write_documents): Ditto.
	(write_variable_display_parameters): Use sys-file-private
	functions to simplify.  Use simple data writer functions instead
	of structures.
	(write_vls_length_table): Use simple data writer functions instead
	of structures.
	(write_longvar_table): Ditto.
	(write_rec_7_34): Break into new functions
	write_integer_info_record, write_float_info_record.  Use simple
	data writer functions instead of structures.
	(buf_write): Removed.
	(append_string_max): Removed.
	(ensure_buf_space): Removed.
	(sys_file_casewriter_write): Get rid of the distinction between
	fast and slow paths, which didn't seem to be too useful.  Use new
	functions write_case_uncompressed, write_case_compressed.
	(put_instruction): Removed.
	(put_element): Removed.
	(write_compressed_data): Removed.
	(close_writer): Use flush_compressed.  Only write case count to
	system file if it will fit in the field.
	(write_case_compressed): New function.
	(write_case_uncompressed): New function.
	(flush_compressed): New function.
	(put_cmp_opcode): New function.
	(put_cmp_number): New function.
	(write_int): New function.
	(convert_double_to_output_format): New function.
	(write_float): New function.
	(write_value): New function.
	(write_string): New function.
	(write_bytes): New function.
	(write_zeros): New function.
	(write_spaces): New function.

	Reviewed by John Darrington.

2007-07-22  Ben Pfaff  <blp@gnu.org>

	Don't try to write very long strings to portable files.  The
	format does not support it.

	* por-file-writer.c (MAX_POR_WIDTH): New macro.
	(pfm_open_writer): Limit output width to MAX_POR_WIDTH.
	(write_format): Add arg to take width to resize format to.
	(write_value): Limit width of value written to MAX_POR_WIDTH.
	(write_variables): Limit width of variable and its output formats
	to MAX_POR_WIDTH.
	Reviewed by John Darrington.

2007-07-22  Ben Pfaff  <blp@gnu.org>

	* sys-file-reader.c (read_variable_to_value_map): Use max_warnings
	local variable instead of literal 5.
	Reviewed by John Darrington.
	
2007-07-22  Ben Pfaff  <blp@gnu.org>

	Fix problems with uniqueness of short names in system files with
	very long string variables.  Now a variable may have multiple
	short names.
	
	* automake.mk (src_data_libdata_a_SOURCES): Add new files
	short-names.c, short-names.h.

	* dictionary.c (dict_clone): Clone all the short names.
	(compare_strings): Move into short-names.c.
	(hash_strings): Ditto.
	(set_var_short_name_suffix): Ditto.
	(dict_assign_short_names): Ditto, rename short_names_assign,
	change to assign all short names.
	
	* por-file-writer.c (write_variables): Use short_names_assign
	instead of dict_assign_short_names.

	* short-names.c: New file.

	* short-names.h: New file.

	* sys-file-private.c (sfm_width_to_segments): New function.

	* sys-file-reader.c (read_long_var_name_map): Save and restore all
	the short names, not just the first one.
	
	* sys-file-writer.c (cont_var_name): Removed.
	(sfm_open_writer): Use short_names_assign instead of
	dict_assign_short_names.  Use unique short names assigned by
	short_names_assign instead of those generated by cont_var_name.

	* variable.c (struct variable): Remove `short_name' member,
	replace by `short_names' and `short_name_cnt'.
	(var_create) Initialize new members.
	(var_get_short_name_cnt): New function.
	(var_get_short_name): Now takes an index argument.  Changed most
	callers to pass 0.
	(var_set_short_name): Ditto.
	(var_clear_short_name): Renamed var_clear_short_names, changed to
	clear all short names.
	
	Reviewed by John Darrington.

2007-07-22  Ben Pfaff  <blp@gnu.org>

	* variable.c (var_set_width): Use new var_set_width function.

	* missing-values.c (mv_n_values): Drop assertion, which was not
	needed.

	* format.c (fmt_default_for_width): New function.
	(fmt_resize): New function.

	Reviewed by John Darrington.

2007-07-18 John Darrington <john@darrington.wattle.id.au>

	* datasheet.c (datasheet_delete_columns): Added assertion to check
	we're not deleting outside the range of the sheet.  

	
	* dictionary.c dictionary.h variable.c: Added the ability for string
	variables to be resized.
	
	* vardict.h: Added some prototypes (moved from dictionary.h) as
	these should only be called by variable.c


2007-07-14 John Darrington <john@darrington.wattle.id.au>

	* sfm-reader.c: Respect case_cnt field in file header.

2007-07-01 John Darrington <john@darrington.wattle.id.au>

	* transformation.c transformation.h (trns_chain_execute): Changed the 
	signature (Patch #6057)

2007-06-10  Ben Pfaff  <blp@gnu.org>

	* casereader-filter.c (casereader_filter_destroy): Make sure to
	write all the remaining excluded cases to the casewriter, if any.

	* caseinit.c (init_list_destroy): Rewrite.
	(init_list_clear): Ditto.

	* casegrouper.c (casegrouper_get_next_group): Always set *reader
	to null when returning false.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	Actually implement the new procedure code and adapt all of its
	clients to match.  Also adapt all of the other case sources and
	sinks in the tree and their clients to use the
	casereader/casewriter infrastructure.

	* automake.mk: Add and remove files.

	* any-reader.c: Change into a casereader.
	* por-file-reader.c: Ditto.
	* scratch-reader.c: Ditto.
	* sys-file-reader.c: Ditto.

	* any-writer.c: Change into a casewriter.
	* por-file-writer.c: Ditto.
	* scratch-writer.c: Ditto.
	* sys-file-writer.c: Ditto.

	* procedure.c: Change to use casereader, casewriter, caseinit, and
	other new infrastructure.

	* scratch-handle.c: Adapt to new infrastructure.

	* case-sink.c: Removed, now dead code.
	* case-sink.h: Ditto.
	* case-source.c: Ditto.
	* case-source.h: Ditto.
	* casefile-factory.c: Ditto.
	* casefile-private.h: Ditto.
	* casefile.c: Ditto.
	* casefile.h: Ditto.
	* casefilter.c: Ditto.
	* casefilter.h: Ditto.
	* fastfile.c: Ditto.
	* fastfile.h: Ditto.
	* fastfile-factory.c: Ditto.
	* fastfile-factory.h: Ditto.
	* storage-stream.c: Ditto.
	* storage-stream.h: Ditto.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	Add datasheet code.

	* automake.mk: Add new files.

	* datasheet.c: New file.

	* datasheet.h: New file.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	Until now, the procedure code has provided a case to the
	case_source, which has filled in the data values that come from
	the active file.  "Left" data values that don't come from the
	active file naturally stay the same from case to case, because the
	procedure code keeps using that same case.

	One of the compromises that comes with the new procedure code is
	that the active file allocates and provides its own case, which
	the procedure code then has to resize to provide room for any
	other variables that should go in the case and then fill in the
	values of "left" variables.  Then, when we're done with that case,
	we have to save the values of "left" variables to copy into the
	next case read from the active file.

	The caseinit code helps with this.

	* automake.mk: Add new files.

	* caseinit.c: New file. 

	* caseinit.h: New file. 

2007-06-06  Ben Pfaff  <blp@gnu.org>

	* value.h (value_cnt_from_width): New function.

	* variable.c (var_get_value_cnt): Use new function.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	Add casegrouper, to allow cases read from a given casereader to be
	broken into groups, each of which has its own casereader.
	Generally cases are grouped based on having equal values for some
	set of variables.

	* automake.mk: Add new files.

	* casegrouper.c: New file.

	* casegrouper.h: New file.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	Add interface to lexicographical ordering of cases.

	* automake.mk: Add new files.

	* case-ordering.c: New file.

	* case-ordering.h: New file.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	Add casereaders and casewriters, the basis of the new data processing
	implementation.  A casereader is a uniform interface to reading cases
	from a data source; a casewriter is a uniform interface to writing
	cases to a data sink.

	* automake.mk: Add new files.
	
	* casereader-filter.c: New file.
	
	* casereader-provider.h: New file.

	* casereader-translator.c: New file.
	
	* casereader.c: New file.
	
	* casereader.h: New file.
	
	* casewriter-provider.h: New file.
	
	* casewriter-translator.c: New file.
	
	* casewriter.c: New file.
	
	* casewriter.h: New file.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	"casewindow" data structure that extends the deque (from libpspp)
	of cases with the ability to dump cases to disk if we get too many
	of them in memory.

	* automake.mk: Add new files.

	* casewindow.c: New file.

	* casewindow.h: New file.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	sparse_cases data structure that augments a sparse_array of cases
	with the ability to dump cases to disk if we get too many cases in
	memory.

	* automake.mk: Add new files.

	* sparse-cases.c: New file.

	* sparse-cases.h: New file.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	Adds a low-level on-disk case array data structure.
	
	* automake.mk: Add new files.

	* case-tmpfile.c: New file.

	* case-tmpfile.h: New file.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	In a couple of places we calculate the maximum number of cases to
	keep in memory based on the user-defined workspace.  Enable
	centralizing the calculation through a new function.
	
	* settings.c (get_workspace_cases): New function.

2007-06-06  Ben Pfaff  <blp@gnu.org>

	The casenumber type is defined in transformations.h, but case.h is
	a more sensible place.  Move it.

	* case.h (CASENUMBER_MAX): New macro.
	(typedef casenumber): Move here, from transformations.h.

2007-06-03  Ben Pfaff  <blp@gnu.org>

	Slightly generalize case_to_values and case_from_values functions.

	* case.c (case_to_values): Rename case_copy_out, change interface.
	(case_from_values): Rename case_copy_in, change interface.

	* fastfile.c (fastfilereader_get_next_case): Update caller.
	(write_case_to_disk): Ditto.

2007-06-02  Ben Pfaff  <blp@gnu.org>

	Clean up after a forgotten part of patch #5829.
	
	* casedeque.h: Remove unused file.

	* automake.mk: Remove casedeque.h from sources.

2007-05-10  Jason Stover  <jhs@math.gcsu.edu>

	* category.c: Removed redundant #include

2007-05-06  Ben Pfaff  <blp@gnu.org>

	Abstract the documents within a dictionary a little better.
	Thanks to John Darrington for suggestion, initial version, and
	review.  Patch #5917.

	* dictionary.c (struct dictionary): Change `documents' member from
	char * to struct string.
	(dict_clear): Destroy struct string.
	(dict_get_documents): Convert struct string to char *.
	(dict_set_documents): Set struct string.  Pad to 80-character
	multiple.
	(dict_clear_documents): New function.
	(dict_add_document_line): New function.
	(dict_get_document_line_cnt): New function.
	(dict_get_document_line): New function.

	* dictionary.h (macro DOC_LINE_LENGTH): New macro.

	* sys-file-reader.c (read_documents): Use new document functions.

2007-04-19 John Darrington <john@darrington.wattle.id.au>

	* sys-file-reader.c: When reading a system file which has no 
	long name table, automatically create one where the long names 
	are the lower case versions of the short names.
	
2007-04-22  Ben Pfaff  <blp@gnu.org>

	* dictionary.c (dict_set_split_vars): dict_destroy expects that
	dict_clear will free most data related to the dictionary.
	dict_clear does a decent job, except that dict_set_split_vars on
	some systems won't actually free the dict's "split" member.
	Instead, it'll allocate a 1-byte region.  Fix this.

	* value.c (value_copy): New function.
	(value_set_missing): Ditto.

2007-04-22 John Darrington <john@darrington.wattle.id.au>

	* Deleted existing category.h and moved cat-routines.h into 
	category.h  Encapsulated struct cat_vals better.

2007-04-19 John Darrington <john@darrington.wattle.id.au>

	* sys-file-reader.c: When reading a system file which has no 
	long name table, automatically create one where the long names 
	are the lower case versions of the short names.
	
2007-04-16 John Darrington <john@darrington.wattle.id.au>

	* sys-file-reader.c: Some versions of Other Software seem to 
        produce system files with string  variables' measure set to 
	zero.  We'll assume these are supposed to be nominal variables.

2007-03-30  Ben Pfaff  <blp@gnu.org>

	* procedure.c: Adapt to new deque data structure.

Mon Feb 19 10:53:21 2007  John McCabe-Dansted <gmatht@gmail.com>
			  Ben Pfaff <blp@gnu.org>

	* file-name.c: Mingw compatibility fixes.
	(fn_search_path): Use ISSLASH instead of comparing against '/'
	directly.
	(fn_dir_name): Use dir_name from gnulib.
	(fn_is_absolute): Use IS_ABSOLUTE_FILE_NAME from gnulib.
	(fn_get_identity): Use GetFullPathName instead of canonicalize
	from gnulib, because the latter does not fully support
	Windows-style path names.  Use this implementation based on the
	detected presence of Windows instead of the absence of Unix, since
	the new implementation is Windows-specific.
	(fn_compare_file_identities): In Windows implementation, compare
	names case-insensitively.

Sun Feb 18 13:28:02 2007  Ben Pfaff  <blp@gnu.org>

	* make-file.c: Don't include mkstemp.h, because gnulib now causes
	<stdlib.h> to have the same effect.

Sun Feb 18 11:20:24 2007  Ben Pfaff  <blp@gnu.org>

	* por-file-reader.c: Add missing _() around messages.

Sun Feb 11 20:44:13 2007  Ben Pfaff  <blp@gnu.org>

	* make-file.c: Include "mkstemp.h", without which linking on
	mingw32 fails.

Thu Feb  8 14:59:05 2007  Ben Pfaff  <blp@gnu.org>
 
 	Reduce platform dependence.
 
 	* file-name.c (fn_tilde_expand): Removed, and removed calls to it.
 	Everywhere we using this, we really should have just depended on
 	the shell to expand tildes.
 	(fn_search_path): Simplify, given that we don't do tilde expansion
 	any longer.
 	(fn_normalize): Removed.  Caller changed to use the canonicalize
 	module from gnulib.
 	(fn_get_cwd): Removed.  Only user was fn_normalize.
 	(fn_is_absolute): Really only test for absolute names.
 	(fn_is_special): Use pipe files if HAVE_POPEN, not if we're in
 	unix.
	(fn_readlink): Removed, as it was only used fn_normalize.
 	(fn_exists): Assume the stat function is available; gnulib does.
 	(fn_open): Use pipe files if HAVE_POPEN, not if we're in unix.
 
Sat Feb  3 21:52:17 2007  Ben Pfaff  <blp@gnu.org>

	* dictionary.c (dict_create_vector_assert): New function.

Wed Feb  7 21:25:15 2007  Ben Pfaff  <blp@gnu.org>

	* file-name.c (fn_normalize): Correct name of function
	fn_is_special.  Thanks to John McCabe-Dansted <gmatht@gmail.com>
	for pointing this out.

Thu Feb  1 16:53:37 2007  Ben Pfaff  <blp@gnu.org>

	We are using a single member in struct file_handle, the "name"
	field, for more than one purpose.  When it begins with '"', it's a
	file name; otherwise, it's a token that can be used to identify
	it.  When that assertion fires, it's because we searched for the
	name case-sensitively as a file name (so that there was no match),
	and then we try to insert it case-insensitively as a token, which
	fails because duplicates aren't allowed.

	Solution: break the two purposes into two separate fields.  This
	fixes the problem and likely makes the code easier to read too.

	Fixes bug #18922.  Thanks to John Darrington for bug report and
	review.

	* file-handle-def.c (struct file_handle): New `id' member.
	(fh_from_name): Rename fh_from_id.  Update all callers.
	(create_handle): New `id' parameter.  Update all callers.
	(fh_create_file): Ditto.
	(fh_get_id): New function.

Mon Jan 15 16:18:10 2007  Ben Pfaff  <blp@gnu.org>

	* case.c (case_is_null): Change return type to bool.

Mon Jan 15 10:57:28 2007  Ben Pfaff  <blp@gnu.org>

	Add debugging code.
	
	* case.c (case_clone) [DEBUGGING]: When debugging, don't use
	reference counting to share data.  This makes it easy for
	valgrind, etc. to find accesses to cases that have been destroyed
	but have been kept around by another user's ref-count.  This often
	happens when the data set is small enough to find in memory; if a
	bigger data set that would overflow to disk were used, then data
	corruption would occur.

Mon Jan 15 10:55:18 2007  Ben Pfaff  <blp@gnu.org>

	Simplify code.

	* case.c (case_unshare): Make it check internally whether the
	ref_cnt is greater than 1, so that the callers don't have to.
	Update callers not to check.

Mon Jan 15 10:53:01 2007  Ben Pfaff  <blp@gnu.org>

	Before, I was thinking that I might want to get rid of reference
	counting at some point.  Now, I'm pretty sure that it's here to
	stay.  Thus, because we have to store the value_cnt anyway for
	reference-counted cases, we might as well expose it to users.

	* case.c (case_get_value_cnt): New function.
	(case_resize): Drop OLD_CNT argument.  Update all callers.  Only
	resize case if its size actually changed.

	* casefile.c (casefile_append_xfer): Use case_get_value_cnt
	instead of peeking inside struct case directly.
	(casefile_append): Ditto.

Mon Jan 15 10:50:22 2007  Ben Pfaff  <blp@gnu.org>

	Get rid of the inlines for the case functions, which made the
	header file hard to read.  (Also, in testing with "-O2 -DNDEBUG",
	the inlines didn't speed up "make check" at all, which is not a
	perfect benchmark but seems indicative.)
	
	* case.c: Remove #ifdef DEBUGGING...#endif around many function
	definitions.  Remove some assertions on nonnull pointers that were
	redundant with a pointer dereference soon after in the function.
	Also:
	(struct case_data): Move definition here from case.h.
	(case_data): Ditto.
	(case_num): Ditto.
	(case_str): Ditto.
	(case_data_wr): Ditto.
	
Sun Jan 14 21:41:12 2007  Ben Pfaff  <blp@gnu.org>

	* automake.mk: Add casedeque.h to sources.
	
	* casedeque.h: New file.

	* procedure.c: (struct dataset) Change lag_count, lag_head,
	lag_queue member into single struct casedeque member.  Update all
	users to use the casedeque instead.
	(lag_case) Removed.

Sun Jan 14 21:43:12 2007  Ben Pfaff  <blp@gnu.org>

	* procedure.c: Simplify lagged cases interface.  Updated all
	clients--well, the only client--to use the simplified interface.
	(dataset_n_lag) Removed.
	(dataset_set_n_lag) Removed.
	(dataset_need_lag) New function.

Tue Jan  9 07:20:05 WST 2007 John Darrington <john@darrington.wattle.id.au>

	* dictionary.c procedure.c: More changes to ensure that callbacks occur
	whenever appropriate, but only when the dataset/dictionary is in a 
	consistent state.

Sun Jan  7 08:33:04 WST 2007 John Darrington <john@darrington.wattle.id.au>

	* dictionary.c dictionary.h : Added callbacks for change of filter and 
	split variables.  Refactored some code to ensure that callbacks get
	invoked when appropriate.

	* procedure.c (proc_cancel_temporary_transformations): Make sure that 
	replace_dict callback occurs when permanent_dict replaces the current
	dictionary.

Wed Jan  3 11:02:11 WST 2007 John Darrington <john@darrington.wattle.id.au>

	* dictionary.c dictionary.h : Added callback for when the weight 
	variable of a dictionary changes.

Mon Jan  1 10:36:26 WST 2007 John Darrington <john@darrington.wattle.id.au>

	* dictionary.c dictionary.h : Added replace_source and replace_dict
	callbacks, and functions to deal with them.

Fri Dec 22 13:56:08 2006  Ben Pfaff  <blp@gnu.org>

	Simplify missing value handling.

	* missing-values.h (enum mv_class): New type.
	(enum mv_type): Moved definition into missing-values.c and renamed
	each MV_* to MVT_*, to distinguish them from the exposed mv_class
	enums.  Updated all uses.
	(struct missing_values): Changed type of `type' from `enum
	mv_type' to `int' because the definition is no longer exposed.
	
	* missing-values.c (mv_is_value_missing): Add new enum mv_class
	parameter.  Update all callers.
	(mv_is_num_missing): Ditto.
	(mv_is_str_missing): Ditto.
	(mv_is_value_user_missing): Removed.  Changed callers to use
	mv_is_value_missing.
	(mv_is_num_user_missing): Removed.  Changed callers to use
	mv_is_num_missing.
	(mv_is_str_user_missing): Removed.  Changed callers to use
	mv_is_str_missing.
	(mv_is_value_system_missing): Removed.  Changed callers to use
	mv_is_value_missing.
	(mv_set_type): Removed.  Changed callers to use mv_clear.
	(mv_clear): New function.
	
	* variable.c (var_is_value_missing): Add new enum mv_class
	parameter.  Update all callers.
	(var_is_num_missing): Ditto.
	(var_is_str_missing): Ditto.
	(var_is_value_user_missing): Removed.  Changed callers to use
	var_is_value_missing.
	(var_is_num_user_missing): Removed.  Changed callers to use
	var_is_num_missing.
	(var_is_str_user_missing): Removed.  Changed callers to use
	var_is_str_missing.
	(var_is_value_system_missing): Removed.  Changed callers to use
	var_is_value_missing.
	
	* casefilter.c (struct casefilter): Use enum mv_class in place of
	bool.
	(casefilter_variable_missing): Adapt to new member.
	(casefilter_create): Change signature to take enum mv_class,
	update callers.

Fri Dec 22 20:08:38 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* casefile-factory.h fastfile-factory.c fastfile-factory.h: New files.

	* case-sink.c case-sink.h procedure.c procedure.h 
          storage-stream.c: Now uses the factory.
	
Sat Dec 16 22:05:18 2006  Ben Pfaff  <blp@gnu.org>

	Make it possible to pull cases from the active file with a
	function call, instead of requiring indirection through a callback
	function.

	* case-source.h (struct case_source_class): Change ->read function
	to return a single case, instead of calling a callback function
	for each case.  Change ->destroy function to return an error
	status.

	* case-source.c (free_case_source): Pass along the value returned
	by the case_source ->destroy function.

	* procedure.c (struct write_case_data): Removed.
	(struct dataset): Added some members to track procedure state.
	(procedure): Optimize the trivial case at this level.
	(internal_procedure): Re-implement in terms of proc_open,
	proc_read, proc_close.
	(proc_open) New function.
	(proc_read) New function.
	(proc_close) New function.
	(write_case) Moved into proc_read.
	(close_active_file) Moved closing of data source into proc_close.

	* storage-source.c: Rewrote to conform with modified
	case_source_class interface.

	* transformations.c (trns_chain_execute): Added argument to allow
	starting execution from an arbitrary transformation.  Updated
	callers.

	* transformations.h (enum TRNS_NEXT_CASE) Renamed TRNS_END_CASE.

Sat Dec 16 14:09:25 2006  Ben Pfaff  <blp@gnu.org>

	* sys-file-reader.c (read_display_parameters): Don't assume that
	MEASURE_* and ALIGN_* have the same values found in system files.

	* sys-file-writer.c (write_variable_display_parameters): Ditto.

	* variable.h: Change MEASURE_NOMINAL, MEASURE_ORDINAL,
	MEASURE_SCALE to be 0-based instead of 1-based.  This also fixes
	the value of n_MEASURES, which was off by 1 (at least from my
	point of view).

Sat Dec 16 12:17:34 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* dictionary.c dictionary.h vardict.h variable.c: Added optional
         	callbacks which are invoked when the dictionary or its 
		variables are changed.  
	
	* missing-values.c missing-values.h value-labels.c: Tidied up
		consistency checks, and made some of them return false 
		instead of assert-failing. 

Wed Dec 13 19:30:11 2006  Ben Pfaff  <blp@gnu.org>

	* calendar.c (calendar_days_in_month): New function.

Mon Dec 11 07:53:39 2006  Ben Pfaff  <blp@gnu.org>

	* value-labels.c (hash_int_val_lab): Only hash as many bytes as
	the value label's width.

Sun Dec 10 14:21:29 2006  Ben Pfaff  <blp@gnu.org>

	* sfm-private.h: Move contents into sys-file-writer.c, which is
	the only remaining user.  Removed Borland C++-specific directives.
	
	* sys-file-reader.c: Clean up and rewrite entire file.  The
	rewritten version is simpler and better abstracted, and should be
	easier to maintain and extend.  It avoids using structures to read
	file data, which is prone to padding variations among compilers.
	It should also handle non-IEEE 754 system files, although I
	haven't been able to find any.  It has been tested against many
	.sav files obtained from the Web and found to produce the same
	results as the earlier version of the code, or in some cases
	improved results.  It is more tolerant of format variations found
	in the wild.

	* sys-file-reader.h (struct sfm_read_info): Removed `big_endian'
	member, putting an enum integer_format in its place.  New member
	`float_format'.  Changed `compressed' member to type bool.

Sun Dec 10 13:48:53 2006  Ben Pfaff  <blp@gnu.org>

	* dictionary.c (dict_delete_consecutive_vars): New function.

Sat Dec  9 20:08:25 2006  Ben Pfaff  <blp@gnu.org>

	* file-name.c (fn_search_path): Remove prefix arg that was unused
	by any caller.  Updated all callers.

Sat Dec  9 20:04:22 2006  Ben Pfaff  <blp@gnu.org>

	* format.c (fmt_dollar_template): Use user's decimal point
	character.  Add assertion.

Sat Dec  9 20:02:25 2006  Ben Pfaff  <blp@gnu.org>

	* format.c (fmt_dollar_template): New function, based on
	dollar_format_template from var-type-dialog.c.

Sat Dec  9 18:05:59 2006  Ben Pfaff  <blp@gnu.org>

	* data-out.c (output_scientific): Fix bad assumption that "buf" is
	null-terminated.
	
Sat Dec  9 17:23:23 2006  Ben Pfaff  <blp@gnu.org>

	Finish converting struct variable to an opaque type.  In this
	phase, we add remaining setter and getter functions, convert the
	remaining PSPP code to use them, and do a bunch of cleanup.  The
	resulting changes are pervasive but mostly trivial, and only the
	notable changes are logged.
	
	* automake.mk (src_data_libdata_a_SOURCES): Add the new source
	files.
	
	* case.c (case_data): Renamed case_data_idx.
	(case_num): Renamed case_num_idx.
	(case_str): Renamed case_str_idx.
	(case_data_rw): Renamed case_data_rw_idx.

	* case.h (case_data): New function with old name and an interface
	that takes a variable instead of an index, which is easier to
	use.  Updated all callers to use the new interface, or to use the
	new *_idx function (see above).
	(case_num): Ditto.
	(case_str): Ditto.
	(case_data_rw): Ditto.
	
	* category.c (cat_stored_values_destroy): Changed interface to
	take a struct cat_vals * instead of a struct variable *.

	* dictionary.c (dict_clone): Use new vector_clone function.	
	(dict_clear) Use new var_destroy function.
	(add_var) New function.
	(dict_create_var) Rewrite in terms of dict_create_var_assert.
	(dict_create_var_assert) Rewrite in terms of add_var.
	(dict_clone_var) Rewrite in terms of dict_clone_var_assert.
	(dict_clone_var_assert) Rewrite in terms of var_clone, add_var.
	(dict_lookup_var) Use new var_create, var_destroy functions.
	(dict_contains_var) Rewrite in terms of new vardict functionality.
	(set_var_dict_index) New function.
	(set_var_case_index) New function.
	(reindex_vars) New function.
	(dict_delete_var) Rewrite in terms of new vardict functionality.
	(dict_reorder_var) Ditto.
	(dict_reorder_vars) Ditto.
	(rename_var) New function.
	(dict_rename_var) Use rename_var.
	(dict_rename_vars) Use pool to simplify code.  Use rename_var.
	(dict_get_compacted_idx_to_fv) Rename
	dict_get_compacted_dict_index_to_case_index, update callers.
	(dict_create_vector) Use new vector_create function.
	(dict_clear_vectors) Use new vector_destroy function.
	(set_var_short_name_suffix) Move here from variable.c, renamed
	from var_set_short_name_suffix, make static, update caller.

	* sys-file-private.c: New file.  
	(sfm_width_to_bytes) Moved here from variable.c, renamed from
	width_to_bytes, update callers.

	* sys-file-private.h: New file.  Later it will supplant
	sfm-private.h; for now it supplements it.
	(macro MIN_VERY_LONG_STRING) New macro.
	(macro EFFECTIVE_LONG_STRING_LENGTH) New macro, from value.h.

	* sys-file-reader.c: Use MIN_VERY_LONG_STRING - 1 where
	MAX_LONG_STRING was used before.

	* sys-file-writer.c: Ditto.

	* value-labels.c: Change the paradigm here to be that a null
	pointer is OK for a struct val_labs * in most cases; it just
	represents an empty set of value labels.
	(val_labs_copy) A copy of a null set is a null set.
	(val_labs_count) A null set has 0 labels.
	(val_labs_replace) Change return type to void.  Rewrite for
	simplicity.
	(val_labs_find) A null set does not contain the value.
	(value_to_string) Moved to variable.c, renamed var_get_value_name,
	transposed argument order, updated all callers.

	* value.c: New file.
	(value_dup) Moved here from variable.c.
	(compare_values) Ditto.
	(hash_value) Ditto.

	* value.h: (macro MAX_SHORT_STRING) Rewrote for simplicity.
	(macro MAX_LONG_STRING) Removed, because it was only interesting
	for system files, not for general code.
	(macro MAX_VERY_LONG_STRING) Ditto.
	(macro EFFECTIVE_LONG_STRING_LENGTH) Moved to sys-file-private.h.
	(macro MAX_ELEMS_PER_VALUE) Removed, as it was unused.

	* vardict.h: New file, for an interface between variables and
	their dictionaries.

	* variable.c: A lot of functions were moved around, for better
	organization.
	(struct variable) Move definition here, from variable.h.
	(var_type_adj) Removed--makes i18n hard.
	(var_type_noun) Ditto.
	(var_create) New function.
	(var_clone) New function.
	(var_destroy) New function.
	(var_set_name) Assert that variable is not in a dictionary.
	(compare_var_names) Rename compare_vars_by_name and fix a couple
	of callers who thought the args were strings.
	(hash_var_name) Rename hash_var_by_name.
	(compare_var_ptr_names) Rename compare_var_ptrs_by_name.
	(hash_var_ptr_name) Rename hash_var_ptr_by_name.
	(var_is_very_long_string) Removed, because it was only interesting
	to system file code.
	(var_set_missing_values) Allow the argument to be the wrong width,
	as long as we can resize it.  Simplify callers who were doing the
	resizing themselves.
	(var_get_value_labels) New function.
	(var_has_value_labels) New function.
	(var_set_value_labels) New function.
	(alloc_value_labels) New function.
	(var_add_value_label) New function.
	(var_replace_value_label) New function.
	(var_clear_value_labels) New function.
	(var_lookup_value_label) New function.
	(var_get_value_name) Moved here from variable.c, renamed from
	var_get_value_name, transposed argument order, updated all
	callers.
	(var_to_string) Moved here, from variable-label.c.
	(var_set_leave) New function.
	(var_get_leave) New function.
	(var_must_leave) New function.
	(var_set_short_name_suffix) Moved to dictionary.c, renamed
	set_var_short_name_suffix.
	(var_get_dict_index) New function.
	(var_get_case_index) New function.
	(var_get_obs_vals) New function.
	(var_set_obs_vals) New function.
	(var_has_obs_vals) New function.
	(var_get_vardict) New function.
	(var_set_vardict) New function.
	(var_has_vardict) New function.
	(var_clear_vardict) New function.
	(value_dup) Moved to value.c.
	(compare_values) Ditto.
	(hash_value) Ditto.

	* variable.h: (enum NUMERIC) Rename VAR_NUMERIC, update all users.
	(enum ALPHA) Rename VAR_STRING, update all users.

	* vector.c: New file.
	(struct vector) Moved here, from variable.h.
	(check_widths) New function.
	(vector_create) New function.
	(vector_clone) New function.
	(vector_destroy) New function.
	(vector_get_name) New function.
	(vector_get_var) New function.
	(vector_get_var_cnt) New function.
	(compare_vector_ptrs_by_name) New function.

	* vector.h: New file.

Sun Dec 10 11:32:56 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* casefilter.c (casefilter_variable_missing): Avoided comparision of
	string variables to SYSMIS.  Thanks to Ben Pfaff for reporting this
	problem.

Sat Dec  9 07:18:03 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* value-labels.c (destroy_atoms): New function.
	* value-labels.c (atom_create): Call destroy_atoms in atexit handler.

Thu Dec  7 17:38:26 2006  Ben Pfaff  <blp@gnu.org>

	Thanks to Jason Stover for pointing out this problem.
	
	* data-out.c (output_number): Use gsl_finite from GSL, which is
	portable, instead of isfinite, which is not.
	(power256) Ditto.

Thu Dec  7 15:22:38 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* variable.c variable.h (value_dup): New function.

Mon Dec  4 22:20:17 2006  Ben Pfaff  <blp@gnu.org>

	Start converting struct variable to an opaque type.  In this
	phase, we add a bunch of setter and getter functions and convert
	most of the PSPP code to use them.  The resulting changes are
	pervasive but mostly trivial, and only the notable changes are
	logged.
	
	* format.c (fmt_equal): New function.
	
	* variable.c (var_type_is_valid): New function.
	(measure_is_valid) Moved here, from format.c.
	(alignment_is_valid) Moved here, from format.c.
	(var_get_name) New function.
	(var_set_name) New function.
	(width_to_type) New function.
	(var_get_type) New function.
	(var_get_width) New function.
	(var_set_width) New function.
	(var_is_numeric) New function.
	(var_is_alpha) New function.
	(var_is_short_string) New function.
	(var_is_long_string) New function.
	(var_is_very_long_string) New function.
	(var_get_missing_values) New function.
	(var_set_missing_values) New function.
	(var_clear_missing_values) New function.
	(var_has_missing_values) New function.
	(var_is_value_missing) New function.
	(var_is_num_missing) New function.
	(var_is_str_missing) New function.
	(var_is_value_user_missing) New function.
	(var_is_num_user_missing) New function.
	(var_is_str_user_missing) New function.
	(var_is_value_system_missing) New function.
	(var_get_print_format) New function.
	(var_set_print_format) New function.
	(var_get_write_format) New function.
	(var_set_write_format) New function.
	(var_set_both_formats) New function.
	(var_get_label) New function.
	(var_set_label) New function.
	(var_clear_label) New function.
	(var_has_label) New function.
	(var_get_measure) New function.
	(var_set_measure) New function.
	(var_get_display_width) New function.
	(var_set_display_width) New function.
	(var_get_alignment) New function.
	(var_set_alignment) New function.
	(var_get_value_cnt) New function.
	(var_get_leave) New function.
	(var_get_short_name) New function.

	* variable.h: (struct variable) Removed "type" and "nv" members;
	they are now computed from "width" where needed.

Mon Dec  4 21:38:40 2006  Ben Pfaff  <blp@gnu.org>

	* missing-values.c (mv_resize): Don't write beyond end of the
	allocated buffer when resizing a long string.

Sat Dec  2 16:28:32 2006  Ben Pfaff  <blp@gnu.org>

	Clean up identifier code: don't require identifier enumerations to
	be in a particular order; make better use of string library;
	expose less of the internals.
		
	* identifier.c: (lex_skip_identifier) Rename lex_id_get_length,
	change interface.  Updated all callers.
	(lex_id_match) Change interface to use struct substring, update
	all callers.
	(lex_id_match_len) Removed.  Update callers to use lex_id_match.
	(global array keywords[]) Make static, change form.  Update all
	users to use lex_id_name instead.
	(lex_is_keyword) New function.
	(lex_id_to_token) Change interface to use struct substring, update
	all callers.
	(lex_id_name) New function.

	* identifier.h: (T_FIRST_KEYWORD) Removed.  Changed users to call
	lex_is_keyword instead.
	(T_LAST_KEYWORD) Removed.
	(T_N_KEYWORDS) Removed.
	
Sat Nov 18 20:46:35 2006  Ben Pfaff  <blp@gnu.org>

	* format.c: (fmt_date_template) Distinguish characters for which a
	space is output and any date delimiter is allowed on input, from
	those for which a space is output and only a space is allowed on
	input.  The former is represented by X, the latter by a space.
	Also, drop distinction between h and H, changing the former to the
	latter.

	* data-in.c: Completely rewrite internals to conform to SPSS input
	formats as closely as possible.
	(data_in) Changed external interface by replacing the structure
	that was used as a single argument by a set of arguments.  Updated
	all callers.
	(data_in_finite_line) Removed.  Converted all callers to use plain
	data_in.
	(data_in_get_integer_format) New function.
	(data_in_set_integer_format) New function.
	(data_in_get_float_format) New function.
	(data_in_set_float_format) New function.

	* data-in.h: (enums DI_IGNORE_ERROR, DI_IMPLIED_DECIMALS) Removed.
	(struct data_in) Removed.

	* data-out.c: (output_date) Drop each component from the input as
	it is output, to allow us to drop the distinction between h (a
	count of hours) and H (the hour of day) template characters.
	Also, handle new X template character.
	(output_scientific) Follow more rational rule on when to drop
	fraction introduced between SPSS 13 and 15.  Updated test case to
	match new behavior.

Sat Nov 11 11:41:26 2006  Ben Pfaff  <blp@gnu.org>

	Fix buffer overflow reported by John Darrington.

	* data-out.c (output_bcd_integer): In case of SYSMIS, etc.,
	realize that DIGITS is a count of nibbles, not of bytes.

Sat Nov  4 15:59:56 2006  Ben Pfaff  <blp@gnu.org>

	* calendar.c (calendar_offset_to_gregorian) Also return the
	year-of-day.  Change callers to new interface.

	* data-out.c: Completely rewrite internals to conform to SPSS
	output formats as completely as possible.
	(data_out) Change interface to put input parameters before output
	parameters, for consistency with the style I now prefer.  Update
	all callers.
	(data_out_get_integer_format) New public function.
	(data_out_set_integer_format) New public function.
	(data_out_get_float_format) New public function.
	(data_out_set_float_format) New public function.

	* data-out.h: New file.  Move prototype for data_out here, from
	format.h.

	* format.c: (fmt_step_width) Use equality comparison instead of
	bitwise and, for clarity.
	(fmt_is_string) Ditto.
	(fmt_input_to_output) Fix categories that are translated to F
	format.

Sun Nov  5 08:29:34 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* casefilter.c casefilter.h (new files), casefile.c casefile.h 
	casefile-private.h: Added casefilter to assist commands with missing 
	values.

Sat Nov  4 11:47:09 2006  Ben Pfaff  <blp@gnu.org>

	Implement SET ERRORS, SHOW ERRORS.  Fixes bug #17609.
	
	* settings.c: (route_errors_to_terminal) New variable.
	(route_errors_to_listing) New variable. 
	(get_error_routing_to_terminal) New function.
	(set_error_routing_to_terminal) New function.
	(get_error_routing_to_listing) New function.
	(set_error_routing_to_listing) New function.

	* settings.h: (SET_ROUTE_* enums) Removed, because unused.

Tue Oct 31 19:58:27 2006  Ben Pfaff  <blp@gnu.org>

	* format.c: Completely rewrite, to achieve better abstraction.
	Rewrite all references to formats in other files.
	
	* format.def: Rewrite and reorganize.

	* settings.c: Move everything related to custom currency formats
	into format.[ch], changing them in form, so as to group related
	code and definitions better.  Changed all references to use the
	new functions.
	(static var decimal) Removed.
	(static var grouping) Removed.
	(static var cc) Removed.
	(get_decimal) Removed.
	(set_decimal) Removed.
	(get_grouping) Removed.
	(set_grouping) Removed.
	(get_cc) Removed.
	(set_cc) Removed.

	* settings.h: (macro CC_CNT) Removed.
	(macro CC_WIDTH) Removed.
	(struct custom_currency) Removed.

Tue Oct 31 19:56:19 2006  Ben Pfaff  <blp@gnu.org>

	* data-in.c (data_in): Use switch statement instead of table, to
	avoid dependence on the order of the FMT_* enums.

Tue Oct 31 19:35:36 2006  Ben Pfaff  <blp@gnu.org>

	* data-out.c: (num_to_string) Removed, because it was dead code.

Tue Oct 31 18:09:24 2006  Ben Pfaff  <blp@gnu.org>

	* data-in.c (parse_trailer): Fix error message.

Sat Oct 28 11:56:50 2006  Ben Pfaff  <blp@gnu.org>

	* format.c (fmt_is_binary): New function.

Thu Oct 19 22:59:56 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* procedure.c procedure.h: Encapsulated the static data into a single
	struct.  

Sat Oct 14 16:56:44 2006  Ben Pfaff  <blp@gnu.org>

	* casefile.c (casereader_read_xfer): Always initialize the case,
	even on an error condition.

Wed Sep 27 09:37:49 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* procedure.c (case_limit_trns_proc): Fixed buglet which rendered the 
	entire function useless.

Mon Sep 25 17:11:46 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* casefile-private.h casefile.c casefile.h fastfile.c: Created new
	casereader method casereader_clone.   
	
	* procedure.c pransformations.h: Introduced new type casenum_t

Thu Sep 21 07:00:30 2006  Ben Pfaff  <blp@gnu.org>

	* variable.c: (width_to_bytes) Rephrase code for clarify.

Sun Jul 16 19:52:03 2006  Ben Pfaff  <blp@gnu.org>

	* format.c: (fmt_type_from_string) New function.
	(fmt_to_string) Include decimals in output if the format has
	decimals, even if the format type does not.  This way, we can
	accurately reproduce incorrect formats in user output.
	(check_common_specifier) Make the check for a bad format type an
	assertion, so we get bug reports if they show up.  Fix message.
	Check for decimal places with a format type that doesn't allow
	them.
	(check_input_specifier) Remove check for FMT_X, which has been
	deleted.
	(check_output_specifier) Ditto.	

	* format.def: Remove FMT_T, FMT_X, FMT_DESCEND, FMT_NEWREC.

	* format.h: (macro FMT_TYPE_LEN_MAX) New macro.
	(struct fmt_desc) Use FMT_TYPE_LEN_MAX in definition.
	(enum fmt_parse_flags) Removed.

Mon Jul 17 18:26:21 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* casefile.c casefile.h: Converted to  an abstract base class.
	* casefile-private.h fastfile.c fastfile.h: New files.
	* automake.mk procedure.c scratch-writer.c storage-stream.c

Wed Jul 12 21:02:26 2006  Ben Pfaff  <blp@gnu.org>

	* procedure.c (internal_procedure): Create sink_case with only as
	many values as the compacted dictionary.

Wed Jul 12 21:01:00 2006  Ben Pfaff  <blp@gnu.org>

	Remove "debugging" code that caused plenty of false positives and
	no true positives.
	
	* case.h (struct ccase): [DEBUGGING] Remove `this' member.

	* case.c: Remove all references to `this' member.

Thu Jul  6 19:09:53 2006  Ben Pfaff  <blp@gnu.org>

	Fix link error noted by Jason Stover.
	
	* storage-stream.c: Include <assert.h>.

Tue Jul  4 08:47:35 2006  Ben Pfaff  <blp@gnu.org>

	Fix bug #15766 (/KEEP subcommand on SAVE doesn't fully support
	ALL) and additional underlying system file issues.

	Thanks to John Darrington for review.

	First problem: var_hash points to variables not owned by the
	sys-file-reader, which the caller may free or modify.  Use an
	array of sfm_vars instead, as done earlier (e.g. CVS version
	1.12).
	
	* sys-file-reader.c (struct sfm_reader): Remove var_hash, svars
	members and remove all code that references it.  Add vars, var_cnt
	members.  Remove fix_specials member, which was unused.
	(struct sfm_var) Remove name member, which was unused.
	(sfm_close_reader) Free vars member instead of var_hash.
	(compare_var_shortnames) Removed.
	(hash_var_shortname) Removed.
	(sfm_open_reader) Fill out vars array.
	(compare_var_index) Removed.
	(sfm_read_case) Use vars instead of var_hash.
	
	Second problem: we're confused about when we actually have very
	long strings, causing us to choose incorrectly between slow path
	and fast path in sfm_read_case.

	* sys-file-reader.c: (sfm_open_reader) Only mark has_vls if we
	have very long strings, not when we have long variable names,
	which is an unrelated feature.

Tue Jun 27 12:06:49 2006  Ben Pfaff  <blp@gnu.org>

	* variable.h: Move var_set and variable parsing declarations to
	new header, src/language/lexer/variable-parser.h.  Modified lots
	of files to include the new header.

Sun Jun 25 22:39:32 2006  Ben Pfaff  <blp@gnu.org>

	* value-labels.c (value_to_string): When there's no value label,
	format the variable according to its print format, instead of
	always effectively using A or F format.

Mon Jun 19 18:05:42 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* casefile.c (casefile_get_random_reader): Nasty hack to get around 
	the mode assertion.

	* format.c: Removed tortological assertion.

Fri Jun  9 12:20:09 2006  Ben Pfaff  <blp@gnu.org>

	Reform string library.
	
	* file-name.c (fn_interp_vars): Change interface to take a
	substring as input.  Updated all users.
	
Fri Jun  9 12:11:24 2006  Ben Pfaff  <blp@gnu.org>

	* format.c (measure_is_valid): Really return false when m >=
	n_MEASURES.

Tue Jun  6 18:46:26 2006  Ben Pfaff  <blp@gnu.org>

	Implement random access to casefiles, for use in GUI.
	
	* casefile.c: (struct casereader) Add `random', `file_ofs',
	`buffer_ofs' members.
	(casefile_get_random_reader) New function.
	(read_open_file) Break part into new function
	seek_and_fill_buffer().
	(fill_buffer) Update buffer_ofs, file_ofs.
	(casereader_seek) New function.

Tue May 30 19:52:33 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* settings.c: Added call to i18n{done, init}.

Tue May  9 21:09:17 2006  Ben Pfaff  <blp@gnu.org>

	* procedure.h: Add WARN_UNUSED_RESULT to procedure function
	prototypes.

Tue May  9 21:08:05 2006  Ben Pfaff  <blp@gnu.org>

	* casefile.c: Convert many uses of `int' to `bool'.

Sat May  6 22:49:43 2006  Ben Pfaff  <blp@gnu.org>

	* transformations.c (trns_chain_destroy): Destroy chain's trns
	member, to fix memory leak.

Sat May  6 22:48:30 2006  Ben Pfaff  <blp@gnu.org>

	* storage-stream.c (storage_source_decapsulate): Destroy case
	source to fix memory leak.

Sat May  6 22:46:47 2006  Ben Pfaff  <blp@gnu.org>

	* scratch-reader.c (scratch_reader_read_case): Copy into existing
	case passed as argument instead of initializing the argument as a
	case.  Fixes memory leak that showed up in
	tests/command/aggregate.sh with scratch files.

Sat May  6 22:45:55 2006  Ben Pfaff  <blp@gnu.org>

	* procedure.c (proc_done): Destroy default_dict, to fix memory
	leak.

Sat May  6 22:44:44 2006  Ben Pfaff  <blp@gnu.org>

	Simplify procedure_with_splits().
	
	* procedure.c (struct split_aux_data): Removed case_count member.
	(procedure_with_splits) Don't initialize case_count.
	(split_procedure_case_func) Check whether prev_case is null
	instead of case_count.
	(split_procedure_end_func) Ditto.

Sat May  6 22:42:23 2006  Ben Pfaff  <blp@gnu.org>

	* case.c (case_move): Do nothing if dst and src are the same
	object.
	(case_try_create) Merge two similar cases.
	(case_copy) Unshare only if data must be actually copied.

Sun May  7 10:04:06 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* data-in.c data-out.c dictionary.c sys-file-reader.c
	sys-file-writer.c variable.c variable.h:  Reworked very long string
	support for better encapsulation.

Sat May  6 19:02:00 2006  Ben Pfaff  <blp@gnu.org>

	* value-labels.c (val_labs_can_set_width): New function.
	(val_labs_set_width) Clear labels if increasing width to long
	string.
	(val_labs_destroy) Remove unneeded test for null.
	
Sat May  6 16:14:08 2006  Ben Pfaff  <blp@gnu.org>

	* value-labels.h: Remove unneeded dependency on variable.h.

Sat May  6 15:58:36 2006  Ben Pfaff  <blp@gnu.org>

	Get rid of `char *c' member in union value, for cleanliness.
	
	* value.h: (union value) Remove `c' member.

Sat May  6 15:36:59 2006  Ben Pfaff  <blp@gnu.org>

	Make dictionary compacting functions a little more general.
	
	* sys-file-writer.c (sfm_open_writer): Use
	dict_compacting_would_change().
	(does_dict_need_translation) Removed.

Sat May  6 15:35:42 2006  Ben Pfaff  <blp@gnu.org>

	Make dictionary compacting functions a little more general.
	
	* dictionary.c (dict_needs_compaction): Rename
	dict_compacting_would_shrink().  Update all callers.
	(dict_compacting_would_change) New function.
	
Sat May  6 14:25:49 2006  Ben Pfaff  <blp@gnu.org>

	* sys-file-writer.c: (does_dict_need_translation) Fix bug:
	inverted return value (!).

Sat May  6 13:37:52 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming procedure execution.  

	* procedure.c: Search and replace "vfm" by "proc".  Notably:
	(static var vfm_source) Rename proc_source.  Update all
	references.
	(static var vfm_sink) Rename proc_sink.  Update all references.
	
Sat May  6 12:38:55 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming procedure execution.  In this phase, remove
	PROCESS IF, which was deprecated anyway and can be easily
	simulated with TEMPORARY followed by SELECT IF.

	* procedure.c: (open_active_file) Don't call
	add_process_if_trns().
	(discard_variables) Get rid of redundant call to
	proc_cancel_all_transformations().
	(add_process_if_trns) Removed.
	(process_if_trns_proc) Removed.
	(process_if_trns_free) Removed.

Sat May  6 10:58:05 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming procedure execution.  In this phase, add
	`const' to the case passed to procedure()'s callback.

	Updated all users of procedure() as well.
	
	* procedure.c: (struct write_case_data) Add "const" to ccase
	parameter for case_func member.
	(procedure) Add "const" to ccase parameter for proc_func
	parameter.
	(multipass_case_func) Make ccase parameter const.
	(internal_procedure) Add "const" to ccase parameter for case_func
	parameter.
	(split_procedure_case_func) Make ccase parameter const.
	(multipass_split_case_func) Make ccase parameter const.
	
Sat May  6 10:30:33 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming procedure execution.  In this phase, get rid of
	the output code for SPLIT FILE groups in procedure.c, which really
	shouldn't be doing any output.  Move it into the individual
	procedures instead.  This also adds some flexibility.

	Updated many users of procedure_with_splits() and
	multipass_procedure_with_splits() to call
	output_split_file_values() and to deal with increased use of
	const.

	* procedure.c: (struct split_aux_data) Add "const struct ccase *"
	parameter to begin_func member.
	(procedure_with_splits) Add "const struct ccase *" parameter to
	begin_func parameter.  Make ccase parameter const in proc_func
	parameter.
	(split_procedure_case_func) Don't dump split file group.  Pass
	case to begin_func.
	(dump_splits) Moved to language/dictionary/split-file.c as
	output_split_file_values().
	(struct multipass_split_aux_data) Add "const struct ccase *"
	parameter to split_func member.
	(multipass_procedure_with_splits) Add "const struct ccase *"
	parameter to split_func parameter.
	(multipass_split_case_func) Save new SPLIT FILE case before
	outputting case.
	(multipass_split_output) Pass saved SPLIT FILE case to split_func.
	
Fri May  5 22:48:50 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming procedure execution.  Change
	internal_procedure() so that it calls open_active_file() and
	close_active_file(), which isolates most of the actual procedure
	functionality.

	* procedure.c: (struct write_case_data) Rename `proc_func' member
	to `case_func' and update all references.
	(procedure) Rewrite as one-line wrapper around
	internal_procedure().
	(struct multipass_aux_data) New.
	(multipass_callback) Renamed multipass_case_func().  Use struct
	multipass_aux_data as auxiliary data.
	(multipass_end_func) New function.
	(multipass_procedure) Rewrite as wrapper for internal_procedure()
	that uses multipass_case_func, multipass_end_func.
	(internal_procedure) Add `end_func' argument.  Move optimization
	of trivial case in here.  Move call to open_active_file() and
	close_active_file() in here.  Now assert that vfm_source is
	non-null.
	(procedure_with_splits_callback) Rename
	split_procedure_case_func().
	(split_procedure_end_func) New function.
	(multipass_split_callback) Rename multipass_split_case_func.
	(multipass_split_end_func) New function.
	(discard_variables) No need to test for nonnull vfm_source.

Fri May  5 21:34:02 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming procedure execution.  Get rid of unused member.

	* procedure.c: (struct write_case_data) Remove `cases_analyzed'
	member.
	(write_case) Don't increment cases_analyzed.

Thu May  4 21:50:11 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming procedure execution.  In this phase, move
	procedure.c and procedure.h from src to src/data.  Update
	makefiles and #includes accordingly.

	* procedure.c: Moved here from src/.

	* procedure.h: Moved here from src/.

Wed May  3 22:42:12 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming procedure execution.  In this phase, get rid of
	many global variables, consolidating procedure execution in
	procedure.c.  Encapsulate transformations in new "struct
	trns_chain".  Also, change implementation of N OF CASES, FILTER,
	and PROCESS IF from special cases to transformations.
	 
	* automake.mk: (src_data_libdata_a_SOURCES) Add transformations.c,
	transformations.h.

	* dictionary.c: (global variable default_dict) Move to
	src/procedure.c.

	* variable.h: (TRNS_*) Move to transformations.h.
	(struct transformation) Move to transformations.c.

Thu May  4 13:47:06 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* sys-file-reader.c: Fixed invalid read problems.

Tue May  2 15:57:10 2006  Ben Pfaff  <blp@gnu.org>

	* storage-stream.c: Add missing function comments.

Tue May  2 15:50:21 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming procedure execution.  In this phase, add some
	new, needed functionality to storage-stream.

	* storage-stream.c: (storage_source_decapsulate) New function.

Tue May  2 15:43:36 2006  Ben Pfaff  <blp@gnu.org>

	* variable.c (width_to_bytes): Declarations must precede
	statements for C90 compliance.

Tue May  2 10:42:05 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* data-out.c, data-in.c, variable.c, variable.h: New functions 
	copy_mangle and copy_demangle for reading/writing cases; emulates the 
	way SPSS deals with strings > 255 bytes.

	* sys-file-reader.c sys-file-writer.c: Added support for Record 7, 
	subtype 14 needed for strings longer than 255 bytes.

	* dictionary.c, format.def, value.c : Updated to use MAX_STRING 
        instead of literal values. Also fixed some constness issues.

	* format.h: Constness

	* sfm-private.h: Renamed the case_size identifier, since I discovered 
        that SPSS's respect for this variable is very nominal.

Mon May  1 15:45:42 2006  Ben Pfaff  <blp@gnu.org>

	Change case limit type from int to size_t.

	* dictionary.c: (struct dictionary) Change type of case_limit
	member.
	(dict_get_case_limit) Change return type.
	(dict_set_case_limit) Change parameter type.

Wed Apr 26 20:01:19 2006  Ben Pfaff  <blp@gnu.org>

	* variable.h: (struct variable) Rename `reinit' member as `leave'
	and invert sense.  Fix up all references.

Wed Apr 26 19:39:28 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming procedure execution.  In this phase, break
	procedure.c into multiple files.
	
	* automake.mk: (src_data_libdata_a_SOURCES) Add all the new files.

	* case-sink.c: New file.

	* case-sink.h: New file.
	
	* case-source.c: New file.

	* case-source.h: New file.
	
	* storage-stream.c: New file.

	* storage-stream.h: New file.

Wed Apr 26 14:55:19 2006  Ben Pfaff  <blp@gnu.org>

	* variable.h: (struct variable) Remove `init' member and all
	references to it from other files.  It was initialized in several
	places, but nothing really ever used it for anything worthwhile.
	Thanks to Jason Stover for pointing out how confusing this
	member is.

Sun Apr 23 22:04:45 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming error message support.  In this phase, get rid
	of message "titles" and put the message text in `struct error'.
	Now `struct error' encapsulates a message more properly.
	
	* casefile.c: (io_error) Use err_msg() instead of err_vmsg().
	Format message ourselves.

	* data-in.c: (vdls_error) Ditto.

	* por-file-reader.c: (error) Ditto.

	* sys-file-reader.c: (corrupt_msg) Ditto.

Sun Apr 16 18:49:51 2006  Ben Pfaff  <blp@gnu.org>

	GNU standards require "file name" instead of "filename" in
	documentation.  It's nice for our code to follow the convention
	too.
	
	* casefile.c: (struct casefile) Rename `filename' member to
	`file_name'.  Updated all references.

	* file-name.c: [!unix] (struct file_identity) Rename
	normalized_filename member to normalized_file_name.  Updated all
	references.

Sun Apr 16 18:35:33 2006  Ben Pfaff  <blp@gnu.org>

	We don't really support anything but Unix-like environments well,
	so we might as well de-obfuscate by writing directory and path
	separators explicitly.

	* file-name.h: (macro DIR_SEPARATOR) Removed.  Changed all usages
	to just '/'.
	(macro PATH_SEPARATOR) Removed.  Changed all usages to just ':'.
	(macro DIR_SEPARATOR_STRING) Removed.  Changed all usages to just
	"/".
	(macro PATH_SEPARATOR_STRING) Removed.  Changed all usages to just
	":"

Sun Apr 16 18:28:35 2006  Ben Pfaff  <blp@gnu.org>

	GNU standards require "file name" instead of "filename" in
	documentation.  It's nice for our code to follow the convention
	too.
	
	* filename.c: Rename to file-name.c.

	* filename.h: Rename to file-name.h.  Update all inclusions.
	Update header guards.

	* automake.mk: Update file names.

Sun Apr 16 16:42:47 2006  Ben Pfaff  <blp@gnu.org>

	* filename.c: (fn_dirname) Renamed fn_dir_name(), all references
	updated.
	(fn_basename) Removed (dead code).
	(fn_absolute_p) Renamed fn_is_absolute(), all references updated.
	(fn_special_p) Renamed fn_is_special(), all references updated.
	(fn_exists_p) Renamed fn_exists(), all references updated.

Sun Apr 16 16:33:58 2006  Ben Pfaff  <blp@gnu.org>

	* filename.c: (fn_tilde_expand) Rewrite for cleaner code.  
	Also, now it only tilde-expands file names, not paths.
	(fn_search_path) Tilde-expand one directory at a time.

Sun Apr 16 16:28:06 2006  Ben Pfaff  <blp@gnu.org>

	* filename.c: (fn_search_path) rewrite for cleaner code.  Also,
	get rid of non-Unixlike version of the code, which has probably
	never been tested.
	(fn_prepend_dir) Removed (dead code).

	* filename.h: (macro DIR_SEPARATOR_STRING) New.
	(macro PATH_SEPARATOR_STRING) New.
Sun Apr 16 16:05:28 2006  Ben Pfaff  <blp@gnu.org>

	Continue reforming error message support.  In this phase, we get
	rid of VM() and the other msg() support for "verbosity", replacing
	it by a new function verbose_msg().

	* filename.c: (fn_search_path) Use verbose_msg() instead of
	msg(VM(), ...).  

Sat Apr 15 19:53:19 2006  Ben Pfaff  <blp@gnu.org>

	* sfm-private.h: Get rid of #defines after #error, which makes no
	sense.

Sat Apr 15 19:48:57 2006  Ben Pfaff  <blp@gnu.org>

	Get rid of our own int32 type in favor of the standard int32_t
	type.
	
	* sfm-private.h: (int32 macro) Don't define this anymore.  Do
	include <stdint.h>.

	* sys-file-reader.c: Use int32_t instead of int32 throughout.
	
	* sys-file-writer.c: Use int32_t instead of int32 throughout.

Sat Apr 15 19:36:47 2006  Ben Pfaff  <blp@gnu.org>

	Remove ill-considered file routines that are no longer used.
	
	* filename.c: (fn_open_ext) Removed.
	(fn_close_ext) Removed.

	* filename.h: (struct file_ext) Removed.

Mon Apr  3 13:22:39 2006  Ben Pfaff  <blp@gnu.org>

	* variable.c (var_is_valid_name): Move declarations before code
	for C90 compliance.

Tue Apr  4 15:28:40 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* filename.ch (fn_interp_vars): Fixed small buglet.

Tue Mar 28 13:47:16 WST 2006 John Darrington <john@darrington.wattle.id.au>
	
	* filename.[ch] (fn_interp_vars): Changed the signature and semantics
	so as to modify the string inline.   Thus makeing it easier to
	destroy the results when no longer needed.
	
2006-03-25  Jason Stover  <jhs@math.gcsu.edu>

	* category.c (cat_stored_values_destroy): Fixed memory leak.

Fri Mar 24 18:15:41 2006  Ben Pfaff  <blp@gnu.org>

	Add some missing frees.  Thanks to John Darrington for reporting
	these.

	* any-writer.c (any_writer_close): Free writer.

	* any-reader.c (any_reader_close): Free reader.

Mon Mar 20 16:33:53 2006  Ben Pfaff  <blp@gnu.org>

	* por-file-reader.c: (error) Mark as NO_RETURN.

Sat Mar 11 15:06:07 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* settings.c: Changed default value of scompress to true.

Sat Mar  4 13:22:51 2006  Ben Pfaff  <blp@gnu.org>

	* sfm-private.h: Include variable.h, to get SHORT_NAME_LEN.

	* value.h: Remove check on MAX_SHORT_STRING, which I don't think
	really applies.

	* variable.h: Move definition of SHORT_NAME_LEN, LONG_NAME_LEN
	here from pref.h.orig.

Sat Mar  4 12:50:48 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* sys-file-reader.c: Fixed bug reading compressed files.

Thu Mar  2 08:40:33 WST 2006 John Darrington <john@darrington.wattle.id.au>

	* Numerous renames.  See src/ChangeLog for details.
	
	* Moved files from src directory
