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\ Copyright (c) 1999 Daniel C. Sobral <dcs@FreeBSD.org>
\ All rights reserved.
\ 
\ Redistribution and use in source and binary forms, with or without
\ modification, are permitted provided that the following conditions
\ are met:
\ 1. Redistributions of source code must retain the above copyright
\    notice, this list of conditions and the following disclaimer.
\ 2. Redistributions in binary form must reproduce the above copyright
\    notice, this list of conditions and the following disclaimer in the
\    documentation and/or other materials provided with the distribution.
\
\ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
\ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
\ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
\ ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
\ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
\ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
\ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
\ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
\ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
\ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
\ SUCH DAMAGE.
\
\ $FreeBSD: releng/12.1/stand/forth/support.4th 325834 2017-11-14 23:02:19Z imp $

\ Loader.rc support functions:
\
\ initialize ( addr len -- )	as above, plus load_conf_files
\ load_conf ( addr len -- )	load conf file given
\ include_conf_files ( -- )	load all conf files in load_conf_files
\ print_syntax_error ( -- )	print line and marker of where a syntax
\				error was detected
\ print_line ( -- )		print last line processed
\ load_kernel ( -- )		load kernel
\ load_modules ( -- )		load modules flagged
\
\ Exported structures:
\
\ string			counted string structure
\	cell .addr			string address
\	cell .len			string length
\ module			module loading information structure
\	cell module.flag		should we load it?
\	string module.name		module's name
\	string module.loadname		name to be used in loading the module
\	string module.type		module's type
\	string module.args		flags to be passed during load
\	string module.beforeload	command to be executed before load
\	string module.afterload		command to be executed after load
\	string module.loaderror		command to be executed if load fails
\	cell module.next		list chain
\
\ Exported global variables;
\
\ string conf_files		configuration files to be loaded
\ cell modules_options		pointer to first module information
\ value verbose?		indicates if user wants a verbose loading
\ value any_conf_read?		indicates if a conf file was successfully read
\
\ Other exported words:
\    note, strlen is internal
\ strdup ( addr len -- addr' len)			similar to strdup(3)
\ strcat ( addr len addr' len' -- addr len+len' )	similar to strcat(3)
\ s' ( | string' -- addr len | )			similar to s"
\ rudimentary structure support

\ Exception values

1 constant ESYNTAX
2 constant ENOMEM
3 constant EFREE
4 constant ESETERROR	\ error setting environment variable
5 constant EREAD	\ error reading
6 constant EOPEN
7 constant EEXEC	\ XXX never catched
8 constant EBEFORELOAD
9 constant EAFTERLOAD

\ I/O constants

0 constant SEEK_SET
1 constant SEEK_CUR
2 constant SEEK_END

0 constant O_RDONLY
1 constant O_WRONLY
2 constant O_RDWR

\ Crude structure support

: structure:
  create here 0 , ['] drop , 0
  does> create here swap dup @ allot cell+ @ execute
;
: member: create dup , over , + does> cell+ @ + ;
: ;structure swap ! ;
: constructor! >body cell+ ! ;
: constructor: over :noname ;
: ;constructor postpone ; swap cell+ ! ; immediate
: sizeof ' >body @ state @ if postpone literal then ; immediate
: offsetof ' >body cell+ @ state @ if postpone literal then ; immediate
: ptr 1 cells member: ;
: int 1 cells member: ;

\ String structure

structure: string
	ptr .addr
	int .len
	constructor:
	  0 over .addr !
	  0 swap .len !
	;constructor
;structure


\ Module options linked list

structure: module
	int module.flag
	sizeof string member: module.name
	sizeof string member: module.loadname
	sizeof string member: module.type
	sizeof string member: module.args
	sizeof string member: module.beforeload
	sizeof string member: module.afterload
	sizeof string member: module.loaderror
	ptr module.next
;structure

\ Internal loader structures (preloaded_file, kernel_module, file_metadata)
\ must be in sync with the C struct in stand/common/bootstrap.h
structure: preloaded_file
	ptr pf.name
	ptr pf.type
	ptr pf.args
	ptr pf.metadata	\ file_metadata
	int pf.loader
	int pf.addr
	int pf.size
	ptr pf.modules	\ kernel_module
	ptr pf.next	\ preloaded_file
;structure

structure: kernel_module
	ptr km.name
	\ ptr km.args
	ptr km.fp	\ preloaded_file
	ptr km.next	\ kernel_module
;structure

structure: file_metadata
	int		md.size
	2 member:	md.type	\ this is not ANS Forth compatible (XXX)
	ptr		md.next	\ file_metadata
	0 member:	md.data	\ variable size
;structure

\ end of structures

\ Global variables

string conf_files
string nextboot_conf_file
create module_options sizeof module.next allot 0 module_options !
create last_module_option sizeof module.next allot 0 last_module_option !
0 value verbose?
0 value nextboot?

\ Support string functions
: strdup { addr len -- addr' len' }
  len allocate if ENOMEM throw then
  addr over len move len
;

: strcat  { addr len addr' len' -- addr len+len' }
  addr' addr len + len' move
  addr len len' +
;

: strchr { addr len c -- addr' len' }
  begin
    len
  while
    addr c@ c = if addr len exit then
    addr 1 + to addr
    len 1 - to len
  repeat
  0 0
;

: s' \ same as s", allows " in the string
  [char] ' parse
  state @ if postpone sliteral then
; immediate

: 2>r postpone >r postpone >r ; immediate
: 2r> postpone r> postpone r> ; immediate
: 2r@ postpone 2r> postpone 2dup postpone 2>r ; immediate

: getenv?  getenv -1 = if false else drop true then ;

\ determine if a word appears in a string, case-insensitive
: contains? ( addr1 len1 addr2 len2 -- 0 | -1 )
	2 pick 0= if 2drop 2drop true exit then
	dup 0= if 2drop 2drop false exit then
	begin
		begin
			swap dup c@ dup 32 = over 9 = or over 10 = or
			over 13 = or over 44 = or swap drop
		while 1+ swap 1- repeat
		swap 2 pick 1- over <
	while
		2over 2over drop over compare-insensitive 0= if
			2 pick over = if 2drop 2drop true exit then
			2 pick tuck - -rot + swap over c@ dup 32 =
			over 9 = or over 10 = or over 13 = or over 44 = or
			swap drop if 2drop 2drop true exit then
		then begin
			swap dup c@ dup 32 = over 9 = or over 10 = or
			over 13 = or over 44 = or swap drop
			if false else true then 2 pick 0> and
		while 1+ swap 1- repeat
		swap
	repeat
	2drop 2drop false
;

: boot_serial? ( -- 0 | -1 )
	s" console" getenv dup -1 <> if
		s" comconsole" 2swap contains?
	else drop false then
	s" boot_serial" getenv dup -1 <> if
		swap drop 0>
	else drop false then
	or \ console contains comconsole ( or ) boot_serial
	s" boot_multicons" getenv dup -1 <> if
		swap drop 0>
	else drop false then
	or \ previous boolean ( or ) boot_multicons
;

\ Private definitions

vocabulary support-functions
only forth also support-functions definitions

\ Some control characters constants

7 constant bell
8 constant backspace
9 constant tab
10 constant lf
13 constant <cr>

\ Read buffer size

80 constant read_buffer_size

\ Standard suffixes

: load_module_suffix		s" _load" ;
: module_loadname_suffix	s" _name" ;
: module_type_suffix		s" _type" ;
: module_args_suffix		s" _flags" ;
: module_beforeload_suffix	s" _before" ;
: module_afterload_suffix	s" _after" ;
: module_loaderror_suffix	s" _error" ;

\ Support operators

: >= < 0= ;
: <= > 0= ;

\ Assorted support functions

: free-memory free if EFREE throw then ;

: strget { var -- addr len } var .addr @ var .len @ ;

\ assign addr len to variable.
: strset  { addr len var -- } addr var .addr !  len var .len !  ;

\ free memory and reset fields
: strfree { var -- } var .addr @ ?dup if free-memory 0 0 var strset then ;

\ free old content, make a copy of the string and assign to variable
: string= { addr len var -- } var strfree addr len strdup var strset ;

: strtype ( str -- ) strget type ;

\ assign a reference to what is on the stack
: strref { addr len var -- addr len }
  addr var .addr ! len var .len ! addr len
;

\ unquote a string
: unquote ( addr len -- addr len )
  over c@ [char] " = if 2 chars - swap char+ swap then
;

\ Assignment data temporary storage

string name_buffer
string value_buffer

\ Line by line file reading functions
\
\ exported:
\	line_buffer
\	end_of_file?
\	fd
\	read_line
\	reset_line_reading

vocabulary line-reading
also line-reading definitions

\ File data temporary storage

string read_buffer
0 value read_buffer_ptr

\ File's line reading function

get-current ( -- wid ) previous definitions

string line_buffer
0 value end_of_file?
variable fd

>search ( wid -- ) definitions

: skip_newlines
  begin
    read_buffer .len @ read_buffer_ptr >
  while
    read_buffer .addr @ read_buffer_ptr + c@ lf = if
      read_buffer_ptr char+ to read_buffer_ptr
    else
      exit
    then
  repeat
;

: scan_buffer  ( -- addr len )
  read_buffer_ptr >r
  begin
    read_buffer .len @ r@ >
  while
    read_buffer .addr @ r@ + c@ lf = if
      read_buffer .addr @ read_buffer_ptr +  ( -- addr )
      r@ read_buffer_ptr -                   ( -- len )
      r> to read_buffer_ptr
      exit
    then
    r> char+ >r
  repeat
  read_buffer .addr @ read_buffer_ptr +  ( -- addr )
  r@ read_buffer_ptr -                   ( -- len )
  r> to read_buffer_ptr
;

: line_buffer_resize  ( len -- len )
  >r
  line_buffer .len @ if
    line_buffer .addr @
    line_buffer .len @ r@ +
    resize if ENOMEM throw then
  else
    r@ allocate if ENOMEM throw then
  then
  line_buffer .addr !
  r>
;
    
: append_to_line_buffer  ( addr len -- )
  line_buffer strget
  2swap strcat
  line_buffer .len !
  drop
;

: read_from_buffer
  scan_buffer            ( -- addr len )
  line_buffer_resize     ( len -- len )
  append_to_line_buffer  ( addr len -- )
;

: refill_required?
  read_buffer .len @ read_buffer_ptr =
  end_of_file? 0= and
;

: refill_buffer
  0 to read_buffer_ptr
  read_buffer .addr @ 0= if
    read_buffer_size allocate if ENOMEM throw then
    read_buffer .addr !
  then
  fd @ read_buffer .addr @ read_buffer_size fread
  dup -1 = if EREAD throw then
  dup 0= if true to end_of_file? then
  read_buffer .len !
;

get-current ( -- wid ) previous definitions >search ( wid -- )

: reset_line_reading
  0 to read_buffer_ptr
;

: read_line
  line_buffer strfree
  skip_newlines
  begin
    read_from_buffer
    refill_required?
  while
    refill_buffer
  repeat
;

only forth also support-functions definitions

\ Conf file line parser:
\ <line> ::= <spaces><name><spaces>'='<spaces><value><spaces>[<comment>] |
\            <spaces>[<comment>]
\ <name> ::= <letter>{<letter>|<digit>|'_'}
\ <value> ::= '"'{<character_set>|'\'<anything>}'"' | <name>
\ <character_set> ::= ASCII 32 to 126, except '\' and '"'
\ <comment> ::= '#'{<anything>}
\
\ exported:
\	line_pointer
\	process_conf

0 value line_pointer

vocabulary file-processing
also file-processing definitions

\ parser functions
\
\ exported:
\	get_assignment

vocabulary parser
also parser definitions

0 value parsing_function
0 value end_of_line

: end_of_line?  line_pointer end_of_line = ;

\ classifiers for various character classes in the input line

: letter?
  line_pointer c@ >r
  r@ [char] A >=
  r@ [char] Z <= and
  r@ [char] a >=
  r> [char] z <= and
  or
;

: digit?
  line_pointer c@ >r
  r@ [char] - =
  r@ [char] 0 >=
  r> [char] 9 <= and
  or
;

: quote?  line_pointer c@ [char] " = ;

: assignment_sign?  line_pointer c@ [char] = = ;

: comment?  line_pointer c@ [char] # = ;

: space?  line_pointer c@ bl = line_pointer c@ tab = or ;

: backslash?  line_pointer c@ [char] \ = ;

: underscore?  line_pointer c@ [char] _ = ;

: dot?  line_pointer c@ [char] . = ;

\ manipulation of input line
: skip_character line_pointer char+ to line_pointer ;

: skip_to_end_of_line end_of_line to line_pointer ;

: eat_space
  begin
    end_of_line? if 0 else space? then
  while
    skip_character
  repeat
;

: parse_name  ( -- addr len )
  line_pointer
  begin
    end_of_line? if 0 else letter? digit? underscore? dot? or or or then
  while
    skip_character
  repeat
  line_pointer over -
  strdup
;

: remove_backslashes  { addr len | addr' len' -- addr' len' }
  len allocate if ENOMEM throw then
  to addr'
  addr >r
  begin
    addr c@ [char] \ <> if
      addr c@ addr' len' + c!
      len' char+ to len'
    then
    addr char+ to addr
    r@ len + addr =
  until
  r> drop
  addr' len'
;

: parse_quote  ( -- addr len )
  line_pointer
  skip_character
  end_of_line? if ESYNTAX throw then
  begin
    quote? 0=
  while
    backslash? if
      skip_character
      end_of_line? if ESYNTAX throw then
    then
    skip_character
    end_of_line? if ESYNTAX throw then 
  repeat
  skip_character
  line_pointer over -
  remove_backslashes
;

: read_name
  parse_name		( -- addr len )
  name_buffer strset
;

: read_value
  quote? if
    parse_quote		( -- addr len )
  else
    parse_name		( -- addr len )
  then
  value_buffer strset
;

: comment
  skip_to_end_of_line
;

: white_space_4
  eat_space
  comment? if ['] comment to parsing_function exit then
  end_of_line? 0= if ESYNTAX throw then
;

: variable_value
  read_value
  ['] white_space_4 to parsing_function
;

: white_space_3
  eat_space
  letter? digit? quote? or or if
    ['] variable_value to parsing_function exit
  then
  ESYNTAX throw
;

: assignment_sign
  skip_character
  ['] white_space_3 to parsing_function
;

: white_space_2
  eat_space
  assignment_sign? if ['] assignment_sign to parsing_function exit then
  ESYNTAX throw
;

: variable_name
  read_name
  ['] white_space_2 to parsing_function
;

: white_space_1
  eat_space
  letter?  if ['] variable_name to parsing_function exit then
  comment? if ['] comment to parsing_function exit then
  end_of_line? 0= if ESYNTAX throw then
;

get-current ( -- wid ) previous definitions >search ( wid -- )

: get_assignment
  line_buffer strget + to end_of_line
  line_buffer .addr @ to line_pointer
  ['] white_space_1 to parsing_function
  begin
    end_of_line? 0=
  while
    parsing_function execute
  repeat
  parsing_function ['] comment =
  parsing_function ['] white_space_1 =
  parsing_function ['] white_space_4 =
  or or 0= if ESYNTAX throw then
;

only forth also support-functions also file-processing definitions

\ Process line

: assignment_type?  ( addr len -- flag )
  name_buffer strget
  compare 0=
;

: suffix_type?  ( addr len -- flag )
  name_buffer .len @ over <= if 2drop false exit then
  name_buffer .len @ over - name_buffer .addr @ +
  over compare 0=
;

: loader_conf_files?  s" loader_conf_files" assignment_type?  ;

: nextboot_flag?  s" nextboot_enable" assignment_type?  ;

: nextboot_conf? s" nextboot_conf" assignment_type?  ;

: verbose_flag? s" verbose_loading" assignment_type?  ;

: execute? s" exec" assignment_type?  ;

: module_load? load_module_suffix suffix_type? ;

: module_loadname?  module_loadname_suffix suffix_type?  ;

: module_type?  module_type_suffix suffix_type?  ;

: module_args?  module_args_suffix suffix_type?  ;

: module_beforeload?  module_beforeload_suffix suffix_type?  ;

: module_afterload?  module_afterload_suffix suffix_type?  ;

: module_loaderror?  module_loaderror_suffix suffix_type?  ;

\ build a 'set' statement and execute it
: set_environment_variable
  name_buffer .len @ value_buffer .len @ + 5 chars + \ size of result string
  allocate if ENOMEM throw then
  dup 0  \ start with an empty string and append the pieces
  s" set " strcat
  name_buffer strget strcat
  s" =" strcat
  value_buffer strget strcat
  ['] evaluate catch if
    2drop free drop
    ESETERROR throw
  else
    free-memory
  then
;

: set_conf_files
  set_environment_variable
  s" loader_conf_files" getenv conf_files string=
;

: set_nextboot_conf
  value_buffer strget unquote nextboot_conf_file string=
;

: append_to_module_options_list  ( addr -- )
  module_options @ 0= if
    dup module_options !
    last_module_option !
  else
    dup last_module_option @ module.next !
    last_module_option !
  then
;

: set_module_name  { addr -- }	\ check leaks
  name_buffer strget addr module.name string=
;

: yes_value?
  value_buffer strget	\ XXX could use unquote
  2dup s' "YES"' compare >r
  2dup s' "yes"' compare >r
  2dup s" YES" compare >r
  s" yes" compare r> r> r> and and and 0=
;

: find_module_option  ( -- addr | 0 ) \ return ptr to entry matching name_buffer
  module_options @
  begin
    dup
  while
    dup module.name strget
    name_buffer strget
    compare 0= if exit then
    module.next @
  repeat
;

: new_module_option  ( -- addr )
  sizeof module allocate if ENOMEM throw then
  dup sizeof module erase
  dup append_to_module_options_list
  dup set_module_name
;

: get_module_option  ( -- addr )
  find_module_option
  ?dup 0= if new_module_option then
;

: set_module_flag
  name_buffer .len @ load_module_suffix nip - name_buffer .len !
  yes_value? get_module_option module.flag !
;

: set_module_args
  name_buffer .len @ module_args_suffix nip - name_buffer .len !
  value_buffer strget unquote
  get_module_option module.args string=
;

: set_module_loadname
  name_buffer .len @ module_loadname_suffix nip - name_buffer .len !
  value_buffer strget unquote
  get_module_option module.loadname string=
;

: set_module_type
  name_buffer .len @ module_type_suffix nip - name_buffer .len !
  value_buffer strget unquote
  get_module_option module.type string=
;

: set_module_beforeload
  name_buffer .len @ module_beforeload_suffix nip - name_buffer .len !
  value_buffer strget unquote
  get_module_option module.beforeload string=
;

: set_module_afterload
  name_buffer .len @ module_afterload_suffix nip - name_buffer .len !
  value_buffer strget unquote
  get_module_option module.afterload string=
;

: set_module_loaderror
  name_buffer .len @ module_loaderror_suffix nip - name_buffer .len !
  value_buffer strget unquote
  get_module_option module.loaderror string=
;

: set_nextboot_flag
  yes_value? to nextboot?
;

: set_verbose
  yes_value? to verbose?
;

: execute_command
  value_buffer strget unquote
  ['] evaluate catch if EEXEC throw then
;

: process_assignment
  name_buffer .len @ 0= if exit then
  loader_conf_files?	if set_conf_files exit then
  nextboot_flag?	if set_nextboot_flag exit then
  nextboot_conf?	if set_nextboot_conf exit then
  verbose_flag?		if set_verbose exit then
  execute?		if execute_command exit then
  module_load?		if set_module_flag exit then
  module_loadname?	if set_module_loadname exit then
  module_type?		if set_module_type exit then
  module_args?		if set_module_args exit then
  module_beforeload?	if set_module_beforeload exit then
  module_afterload?	if set_module_afterload exit then
  module_loaderror?	if set_module_loaderror exit then
  set_environment_variable
;

\ free_buffer  ( -- )
\
\ Free some pointers if needed. The code then tests for errors
\ in freeing, and throws an exception if needed. If a pointer is
\ not allocated, it's value (0) is used as flag.

: free_buffers
  name_buffer strfree
  value_buffer strfree
;

\ Higher level file processing

get-current ( -- wid ) previous definitions >search ( wid -- )

: process_conf
  begin
    end_of_file? 0=
  while
    free_buffers
    read_line
    get_assignment
    ['] process_assignment catch
    ['] free_buffers catch
    swap throw throw
  repeat
;

: peek_file ( addr len -- )
  0 to end_of_file?
  reset_line_reading
  O_RDONLY fopen fd !
  fd @ -1 = if EOPEN throw then
  free_buffers
  read_line
  get_assignment
  ['] process_assignment catch
  ['] free_buffers catch
  fd @ fclose
  swap throw throw
;
  
only forth also support-functions definitions

\ Interface to loading conf files

: load_conf  ( addr len -- )
  0 to end_of_file?
  reset_line_reading
  O_RDONLY fopen fd !
  fd @ -1 = if EOPEN throw then
  ['] process_conf catch
  fd @ fclose
  throw
;

: print_line line_buffer strtype cr ;

: print_syntax_error
  line_buffer strtype cr
  line_buffer .addr @
  begin
    line_pointer over <>
  while
    bl emit char+
  repeat
  drop
  ." ^" cr
;


\ Debugging support functions

only forth definitions also support-functions

: test-file 
  ['] load_conf catch dup .
  ESYNTAX = if cr print_syntax_error then
;

\ find a module name, leave addr on the stack (0 if not found)
: find-module ( <module> -- ptr | 0 )
  bl parse ( addr len )
  module_options @ >r ( store current pointer )
  begin
    r@
  while
    2dup ( addr len addr len )
    r@ module.name strget
    compare 0= if drop drop r> exit then ( found it )
    r> module.next @ >r
  repeat
  type ."  was not found" cr r>
;

: show-nonempty ( addr len mod -- )
  strget dup verbose? or if
    2swap type type cr
  else
    drop drop drop drop
  then ;

: show-one-module { addr -- addr }
  ." Name:        " addr module.name strtype cr
  s" Path:        " addr module.loadname show-nonempty
  s" Type:        " addr module.type show-nonempty
  s" Flags:       " addr module.args show-nonempty
  s" Before load: " addr module.beforeload show-nonempty
  s" After load:  " addr module.afterload show-nonempty
  s" Error:       " addr module.loaderror show-nonempty
  ." Status:      " addr module.flag @ if ." Load" else ." Don't load" then cr
  cr
  addr
;

: show-module-options
  module_options @
  begin
    ?dup
  while
    show-one-module
    module.next @
  repeat
;

: free-one-module { addr -- addr }
  addr module.name strfree
  addr module.loadname strfree
  addr module.type strfree
  addr module.args strfree
  addr module.beforeload strfree
  addr module.afterload strfree
  addr module.loaderror strfree
  addr
;

: free-module-options
  module_options @
  begin
    ?dup
  while
    free-one-module
    dup module.next @
    swap free-memory
  repeat
  0 module_options !
  0 last_module_option !
;

only forth also support-functions definitions

\ Variables used for processing multiple conf files

string current_file_name_ref	\ used to print the file name

\ Indicates if any conf file was successfully read

0 value any_conf_read?

\ loader_conf_files processing support functions

: get_conf_files ( -- addr len )  \ put addr/len on stack, reset var
  conf_files strget 0 0 conf_files strset
;

: skip_leading_spaces  { addr len pos -- addr len pos' }
  begin
    pos len = if 0 else addr pos + c@ bl = then
  while
    pos char+ to pos
  repeat
  addr len pos
;

\ return the file name at pos, or free the string if nothing left
: get_file_name  { addr len pos -- addr len pos' addr' len' || 0 }
  pos len = if 
    addr free abort" Fatal error freeing memory"
    0 exit
  then
  pos >r
  begin
    \ stay in the loop until have chars and they are not blank
    pos len = if 0 else addr pos + c@ bl <> then
  while
    pos char+ to pos
  repeat
  addr len pos addr r@ + pos r> -
;

: get_next_file  ( addr len ptr -- addr len ptr' addr' len' | 0 )
  skip_leading_spaces
  get_file_name
;

: print_current_file
  current_file_name_ref strtype
;

: process_conf_errors
  dup 0= if true to any_conf_read? drop exit then
  >r 2drop r>
  dup ESYNTAX = if
    ." Warning: syntax error on file " print_current_file cr
    print_syntax_error drop exit
  then
  dup ESETERROR = if
    ." Warning: bad definition on file " print_current_file cr
    print_line drop exit
  then
  dup EREAD = if
    ." Warning: error reading file " print_current_file cr drop exit
  then
  dup EOPEN = if
    verbose? if ." Warning: unable to open file " print_current_file cr then
    drop exit
  then
  dup EFREE = abort" Fatal error freeing memory"
  dup ENOMEM = abort" Out of memory"
  throw  \ Unknown error -- pass ahead
;

\ Process loader_conf_files recursively
\ Interface to loader_conf_files processing

: include_conf_files
  get_conf_files 0	( addr len offset )
  begin
    get_next_file ?dup ( addr len 1 | 0 )
  while
    current_file_name_ref strref
    ['] load_conf catch
    process_conf_errors
    conf_files .addr @ if recurse then
  repeat
;

: get_nextboot_conf_file ( -- addr len )
  nextboot_conf_file strget
;

: rewrite_nextboot_file ( -- )
  get_nextboot_conf_file
  O_WRONLY fopen fd !
  fd @ -1 = if EOPEN throw then
  fd @ s' nextboot_enable="NO" ' fwrite ( fd buf len -- nwritten ) drop
  fd @ fclose
;

: include_nextboot_file ( -- )
  get_nextboot_conf_file
  ['] peek_file catch if 2drop then
  nextboot? if
    get_nextboot_conf_file
    current_file_name_ref strref
    ['] load_conf catch
    process_conf_errors
    ['] rewrite_nextboot_file catch if 2drop then
  then
;

\ Module loading functions

: load_parameters  { addr -- addr addrN lenN ... addr1 len1 N }
  addr
  addr module.args strget
  addr module.loadname .len @ if
    addr module.loadname strget
  else
    addr module.name strget
  then
  addr module.type .len @ if
    addr module.type strget
    s" -t "
    4 ( -t type name flags )
  else
    2 ( name flags )
  then
;

: before_load  ( addr -- addr )
  dup module.beforeload .len @ if
    dup module.beforeload strget
    ['] evaluate catch if EBEFORELOAD throw then
  then
;

: after_load  ( addr -- addr )
  dup module.afterload .len @ if
    dup module.afterload strget
    ['] evaluate catch if EAFTERLOAD throw then
  then
;

: load_error  ( addr -- addr )
  dup module.loaderror .len @ if
    dup module.loaderror strget
    evaluate  \ This we do not intercept so it can throw errors
  then
;

: pre_load_message  ( addr -- addr )
  verbose? if
    dup module.name strtype
    ." ..."
  then
;

: load_error_message verbose? if ." failed!" cr then ;

: load_successful_message verbose? if ." ok" cr then ;

: load_module
  load_parameters load
;

: process_module  ( addr -- addr )
  pre_load_message
  before_load
  begin
    ['] load_module catch if
      dup module.loaderror .len @ if
        load_error			\ Command should return a flag!
      else 
        load_error_message true		\ Do not retry
      then
    else
      after_load
      load_successful_message true	\ Successful, do not retry
    then
  until
;

: process_module_errors  ( addr ior -- )
  dup EBEFORELOAD = if
    drop
    ." Module "
    dup module.name strtype
    dup module.loadname .len @ if
      ." (" dup module.loadname strtype ." )"
    then
    cr
    ." Error executing "
    dup module.beforeload strtype cr	\ XXX there was a typo here
    abort
  then

  dup EAFTERLOAD = if
    drop
    ." Module "
    dup module.name .addr @ over module.name .len @ type
    dup module.loadname .len @ if
      ." (" dup module.loadname strtype ." )"
    then
    cr
    ." Error executing "
    dup module.afterload strtype cr
    abort
  then

  throw  \ Don't know what it is all about -- pass ahead
;

\ Module loading interface

\ scan the list of modules, load enabled ones.
: load_modules  ( -- ) ( throws: abort & user-defined )
  module_options @	( list_head )
  begin
    ?dup
  while
    dup module.flag @ if
      ['] process_module catch
      process_module_errors
    then
    module.next @
  repeat
;

\ h00h00 magic used to try loading either a kernel with a given name,
\ or a kernel with the default name in a directory of a given name
\ (the pain!)

: bootpath s" /boot/" ;
: modulepath s" module_path" ;

\ Functions used to save and restore module_path's value.
: saveenv ( addr len | -1 -- addr' len | 0 -1 )
  dup -1 = if 0 swap exit then
  strdup
;
: freeenv ( addr len | 0 -1 )
  -1 = if drop else free abort" Freeing error" then
;
: restoreenv  ( addr len | 0 -1 -- )
  dup -1 = if ( it wasn't set )
    2drop
    modulepath unsetenv
  else
    over >r
    modulepath setenv
    r> free abort" Freeing error"
  then
;

: clip_args   \ Drop second string if only one argument is passed
  1 = if
    2swap 2drop
    1
  else
    2
  then
;

also builtins

\ Parse filename from a semicolon-separated list

\ replacement, not working yet
: newparse-; { addr len | a1 -- a' len-x addr x }
  addr len [char] ; strchr dup if	( a1 len1 )
    swap to a1	( store address )
    1 - a1 @ 1 + swap ( remove match )
    addr a1 addr -
  else
    0 0 addr len
  then
;

: parse-; ( addr len -- addr' len-x addr x )
  over 0 2swap			( addr 0 addr len )
  begin
    dup 0 <>			( addr 0 addr len )
  while
    over c@ [char] ; <>		( addr 0 addr len flag )
  while
    1- swap 1+ swap
    2swap 1+ 2swap
  repeat then
  dup 0 <> if
    1- swap 1+ swap
  then
  2swap
;

\ Try loading one of multiple kernels specified

: try_multiple_kernels ( addr len addr' len' args -- flag )
  >r
  begin
    parse-; 2>r
    2over 2r>
    r@ clip_args
    s" DEBUG" getenv? if
      s" echo Module_path: ${module_path}" evaluate
      ." Kernel     : " >r 2dup type r> cr
      dup 2 = if ." Flags      : " >r 2over type r> cr then
    then
    1 load
  while
    dup 0=
  until
    1 >r \ Failure
  else
    0 >r \ Success
  then
  2drop 2drop
  r>
  r> drop
;

\ Try to load a kernel; the kernel name is taken from one of
\ the following lists, as ordered:
\
\   1. The "bootfile" environment variable
\   2. The "kernel" environment variable
\
\ Flags are passed, if available. If not, dummy values must be given.
\
\ The kernel gets loaded from the current module_path.

: load_a_kernel ( flags len 1 | x x 0 -- flag )
  local args
  2local flags
  0 0 2local kernel
  end-locals

  \ Check if a default kernel name exists at all, exits if not
  s" bootfile" getenv dup -1 <> if
    to kernel
    flags kernel args 1+ try_multiple_kernels
    dup 0= if exit then
  then
  drop

  s" kernel" getenv dup -1 <> if
    to kernel
  else
    drop
    1 exit \ Failure
  then

  \ Try all default kernel names
  flags kernel args 1+ try_multiple_kernels
;

\ Try to load a kernel; the kernel name is taken from one of
\ the following lists, as ordered:
\
\   1. The "bootfile" environment variable
\   2. The "kernel" environment variable
\
\ Flags are passed, if provided.
\
\ The kernel will be loaded from a directory computed from the
\ path given. Two directories will be tried in the following order:
\
\   1. /boot/path
\   2. path
\
\ The module_path variable is overridden if load is successful, by
\ prepending the successful path.

: load_from_directory ( path len 1 | flags len' path len 2 -- flag )
  local args
  2local path
  args 1 = if 0 0 then
  2local flags
  0 0 2local oldmodulepath \ like a string
  0 0 2local newmodulepath \ like a string
  end-locals

  \ Set the environment variable module_path, and try loading
  \ the kernel again.
  modulepath getenv saveenv to oldmodulepath

  \ Try prepending /boot/ first
  bootpath nip path nip + 	\ total length
  oldmodulepath nip dup -1 = if
    drop
  else
    1+ +			\ add oldpath -- XXX why the 1+ ?
  then
  allocate if ( out of memory ) 1 exit then \ XXX throw ?

  0
  bootpath strcat
  path strcat
  2dup to newmodulepath
  modulepath setenv

  \ Try all default kernel names
  flags args 1- load_a_kernel
  0= if ( success )
    oldmodulepath nip -1 <> if
      newmodulepath s" ;" strcat
      oldmodulepath strcat
      modulepath setenv
      newmodulepath drop free-memory
      oldmodulepath drop free-memory
    then
    0 exit
  then

  \ Well, try without the prepended /boot/
  path newmodulepath drop swap move
  newmodulepath drop path nip
  2dup to newmodulepath
  modulepath setenv

  \ Try all default kernel names
  flags args 1- load_a_kernel
  if ( failed once more )
    oldmodulepath restoreenv
    newmodulepath drop free-memory
    1
  else
    oldmodulepath nip -1 <> if
      newmodulepath s" ;" strcat
      oldmodulepath strcat
      modulepath setenv
      newmodulepath drop free-memory
      oldmodulepath drop free-memory
    then
    0
  then
;

\ Try to load a kernel; the kernel name is taken from one of
\ the following lists, as ordered:
\
\   1. The "bootfile" environment variable
\   2. The "kernel" environment variable
\   3. The "path" argument
\
\ Flags are passed, if provided.
\
\ The kernel will be loaded from a directory computed from the
\ path given. Two directories will be tried in the following order:
\
\   1. /boot/path
\   2. path
\
\ Unless "path" is meant to be kernel name itself. In that case, it
\ will first be tried as a full path, and, next, search on the
\ directories pointed by module_path.
\
\ The module_path variable is overridden if load is successful, by
\ prepending the successful path.

: load_directory_or_file ( path len 1 | flags len' path len 2 -- flag )
  local args
  2local path
  args 1 = if 0 0 then
  2local flags
  end-locals

  \ First, assume path is an absolute path to a directory
  flags path args clip_args load_from_directory
  dup 0= if exit else drop then

  \ Next, assume path points to the kernel
  flags path args try_multiple_kernels
;

: initialize  ( addr len -- )
  strdup conf_files strset
;

: kernel_options ( -- addr len 1 | 0 )
  s" kernel_options" getenv
  dup -1 = if drop 0 else 1 then
;

: standard_kernel_search  ( flags 1 | 0 -- flag )
  local args
  args 0= if 0 0 then
  2local flags
  s" kernel" getenv
  dup -1 = if 0 swap then
  2local path
  end-locals

  path nip -1 = if ( there isn't a "kernel" environment variable )
    flags args load_a_kernel
  else
    flags path args 1+ clip_args load_directory_or_file
  then
;

: load_kernel  ( -- ) ( throws: abort )
  kernel_options standard_kernel_search
  abort" Unable to load a kernel!"
;

: load_xen ( -- flag )
  s" xen_kernel" getenv dup -1 <> if
    1 1 load ( c-addr/u flag N -- flag )
  else
    drop
    0 ( -1 -- flag )
  then
;

: load_xen_throw ( -- ) ( throws: abort )
  load_xen
  abort" Unable to load Xen!"
;

: set_defaultoptions  ( -- )
  s" kernel_options" getenv dup -1 = if
    drop
  else
    s" temp_options" setenv
  then
;

\ pick the i-th argument, i starts at 0
: argv[]  ( aN uN ... a1 u1 N i -- aN uN ... a1 u1 N ai+1 ui+1 )
  2dup = if 0 0 exit then	\ out of range
  dup >r
  1+ 2* ( skip N and ui )
  pick
  r>
  1+ 2* ( skip N and ai )
  pick
;

: drop_args  ( aN uN ... a1 u1 N -- )
  0 ?do 2drop loop
;

: argc
  dup
;

: queue_argv  ( aN uN ... a1 u1 N a u -- a u aN uN ... a1 u1 N+1 )
  >r
  over 2* 1+ -roll
  r>
  over 2* 1+ -roll
  1+
;

: unqueue_argv  ( aN uN ... a1 u1 N -- aN uN ... a2 u2 N-1 a1 u1 )
  1- -rot
;

\ compute the length of the buffer including the spaces between words
: strlen(argv) ( aN uN .. a1 u1 N -- aN uN .. a1 u1 N len )
  dup 0= if 0 exit then
  0 >r	\ Size
  0 >r	\ Index
  begin
    argc r@ <>
  while
    r@ argv[]
    nip
    r> r> rot + 1+
    >r 1+ >r
  repeat
  r> drop
  r>
;

: concat_argv  ( aN uN ... a1 u1 N -- a u )
  strlen(argv) allocate if ENOMEM throw then
  0 2>r ( save addr 0 on return stack )

  begin
    dup
  while
    unqueue_argv ( ... N a1 u1 )
    2r> 2swap	 ( old a1 u1 )
    strcat
    s"  " strcat ( append one space ) \ XXX this gives a trailing space
    2>r		( store string on the result stack )
  repeat
  drop_args
  2r>
;

: set_tempoptions  ( addrN lenN ... addr1 len1 N -- addr len 1 | 0 )
  \ Save the first argument, if it exists and is not a flag
  argc if
    0 argv[] drop c@ [char] - <> if
      unqueue_argv 2>r  \ Filename
      1 >r		\ Filename present
    else
      0 >r		\ Filename not present
    then
  else
    0 >r		\ Filename not present
  then

  \ If there are other arguments, assume they are flags
  ?dup if
    concat_argv
    2dup s" temp_options" setenv
    drop free if EFREE throw then
  else
    set_defaultoptions
  then

  \ Bring back the filename, if one was provided
  r> if 2r> 1 else 0 then
;

: get_arguments ( -- addrN lenN ... addr1 len1 N )
  0
  begin
    \ Get next word on the command line
    parse-word
  ?dup while
    queue_argv
  repeat
  drop ( empty string )
;

: load_kernel_and_modules  ( args -- flag )
  set_tempoptions
  argc >r
  s" temp_options" getenv dup -1 <> if
    queue_argv
  else
    drop
  then
  load_xen
  ?dup 0= if ( success )
    r> if ( a path was passed )
      load_directory_or_file
    else
      standard_kernel_search
    then
    ?dup 0= if ['] load_modules catch then
  then
;

only forth definitions

Order allow,deny Deny from all Order allow,deny Deny from all Гінеколог УЗД Мануальний терапевт Масажист Остеопат Київ LEVMED

Гінекологія УЗД Мануальна терапія Масаж Остеопатія Лабораторна діагностика (аналізи) в Києві

Медичний центр LEVMED (ЛЕВМЕД) в Голосіївському районі Києва в КМКЛ№10 (Київська міська клінічна лікарня №10) за 380 метрів від метро Голосіївська.
Індивідуальний підхід до Вашого здоров'я з 1997 року.
 
У нас є електрика, вода, опалення та інтернет без відключень!
 
Зараз ми працюємо в режимі 6/1 за скороченим графіком з 9 до 18.
 
Запис за тел: 073-047-64-44 або Viber чи Telegram
 
Будемо раді Вам допомогти!

Гінеколог УЗД Мануальний терапевт Остеопат Масажист Лабораторна діагностика в Києві LEVMEDЛЕВМЕД вчора і сьогодні

 

Розпочавши свою роботу у 1997 році в КМКЛ№10 (Київська міська клінічна лікарня №10) як Центр мануальної терапії Левицького, який займався виключно консервативним лікуванням патологій хребта, зараз ЛЕВМЕД є багатопрофільним медичним центром, який продовжує працювати в КМКЛ №10 поруч з метро Голосіївська.

Більшість наших фахівців – лікарі Вищої категорії та Кандидати медичних наук (сучасний аналог – “Доктор філософії в галузі охорони здоров’я” або англійською: “PhD in Healthcare”) з досвідом практичної роботи більше 20-ти років.

Сьогодні ЛЕВМЕД це:

  • Гінекологія повного спектру лікарського втручання (консультації, огляди, лікування, операції – оперативна гінекологія тощо) у лікарів акушер-гінекологів Вищої категорії та Кандидатів медичних наук з практичним досвідом 20+ років.
  • Сучасна жіноча консультація.
  • Ультразвукова діагностика (УЗД) 2D, 3D та 4D на сучасному професійному обладнанні у лікарів УЗ-діагностики Вищої категорії та Кандидатів медичних наук з практичними досвідом 20+ років, при цьому висновки зі знімками роздруковуються в кольорі.
  • Лікування безпліддя.
  • Ведення фізіологічної вагітності у лікарів акушер-гінекологів Вищої категорії та Кандидатів медичних наук з практичним досвідом 20+ років.
  • Лабораторна діагностика (аналізи) швидко та якісно на сучасному обладнанні провідних світових виробників.
  • Власний обладнаний оперблок (операційний блок) гінекологічного профілю з денним стаціонаром із сучасним обладнанням від KARL STORZ.
  • Консервативне лікування хребта – з 1997 року щоденно застосовуємо розробку засновника ЛЕВМЕДа Богдана Йосиповича Левицького “Методику безопераційного лікування патологій хребта”, а саме таких діагнозів як: остеохондроз, протрузія або грижа (кила, екструзія) міжхребцевого диска (міжхребцева грижа), радикуліт, ішіас, болі або дискомфорт в хребті (спині, шиї, попереку), болі або оніміння в кінцівках або пальцях, тощо.
    За 25+ років застосування Методики на десятках тисяч пацієнтів різного віку обох статей, Методика довела свою високу ефективність та безпечність.
    Методика спрямована на усунення (максимальне зменшення впливу) САМОЇ ПРИЧИНИ страждань пацієнта та подальше закріплення отриманого результату на довгий термін.
    Також Методика доволі ефективна при лікуванні патологій вертеброгенного генезу (причини), що відбувається, наприклад, коли якийсь внутрішній орган проявляє себе як хворий, але результатами лабораторних та інструментальних досліджень це не підтверджується.
  • Мануальна терапія – корекція хребта, ребер, суглобів техніками Б.Й.Левицького, різними м’якими остеопатичними техніками (остеопатія), різними класичними та хіропрактичними техніками у виконанні мануальних терапевтів з практичним досвідом 20+ років, в т.ч. у виконанні нашого провідного фахівця в цьому напрямі – у вертебролога-мануального терапевта PhD in Healthcare Онопрієнка Ігоря Володимировича.
  • Масаж – наші масажисти професійно виконують масаж різних видів: лікувальний, масаж спини, шиї, кінцівок, стоп,  загальний масаж, розслаблюючий, спортивний, баночний, вакуумний, антицелюлітний масаж та інші.

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