File:  [gforth] / gforth / wf.fs
Revision 1.7: download - view: text, annotated - select for diffs
Mon Jul 23 13:16:11 2001 UTC (18 years, 3 months ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Added image size handling

    1: \ wiki forth
    2: 
    3: require string.fs
    4: 
    5: \ tag handling
    6: 
    7: : .' '' parse postpone SLiteral postpone type ; immediate
    8: : s' '' parse postpone SLiteral ; immediate
    9: 
   10: Variable tag-option
   11: s" " tag-option $!
   12: 
   13: : tag ( addr u -- ) '< emit type tag-option $@ type '> emit
   14:     s" " tag-option $! ;
   15: : /tag ( addr u -- ) '< emit '/ emit type '> emit ;
   16: : tagged ( addr1 u1 addr2 u2 -- )  2dup 2>r tag type 2r> /tag ;
   17: 
   18: : opt ( addr u opt u -- )  s"  " tag-option $+!
   19:     tag-option $+! s' ="' tag-option $+! tag-option $+!
   20:     s' "' tag-option $+! ;
   21: : href= ( addr u -- )  s" href" opt ;
   22: : src=  ( addr u -- )  s" src" opt ;
   23: : alt=  ( addr u -- )  s" alt" opt ;
   24: : width=  ( addr u -- )  s" width" opt ;
   25: : height=  ( addr u -- )  s" height" opt ;
   26: : align= ( addr u -- ) s" align" opt ;
   27: : mailto: ( addr u -- ) s'  href="mailto:' tag-option $+!
   28:     tag-option $+! s' "' tag-option $+! ;
   29: 
   30: \ environment handling
   31: 
   32: Variable oldenv
   33: Variable envs 10 0 [DO] 0 , [LOOP]
   34: 
   35: : env$ ( -- addr ) envs dup @ 1+ cells + ;
   36: : env ( addr u -- ) env$ $! ;
   37: : env? ( -- ) envs @ oldenv @
   38:     2dup > IF  env$ $@ tag  THEN
   39:     2dup < IF  env$ cell+ $@ /tag  env$ cell+ $off  THEN
   40:     drop oldenv ! ;
   41: : +env  1 envs +! ;
   42: : -env -1 envs +! env? ;
   43: : -envs envs @ 0 ?DO  -env cr  LOOP ;
   44: : >env ( addr u -- ) +env env env? ;
   45: 
   46: \ alignment
   47: 
   48: : >align ( c -- )
   49:     CASE
   50: 	'l OF  s" left"   align=  ENDOF
   51: 	'r OF  s" right"  align=  ENDOF
   52: 	'c OF  s" center" align=  ENDOF
   53: 	'< OF  s" left"   align=  ENDOF
   54: 	'> OF  s" right"  align=  ENDOF
   55: 	'| OF  s" center" align=  ENDOF
   56:     ENDCASE ;
   57: 
   58: \ image handling
   59: 
   60: Create imgbuf $20 allot
   61: 
   62: Create pngsig $89 c, $50 c, $4E c, $47 c, $0D c, $0A c, $1A c, $0A c,
   63: Create jfif   $FF c, $D8 c, $FF c, $E0 c, $00 c, $10 c, $4A c, $46 c,
   64:               $49 c, $46 c,
   65: 
   66: : b@ ( addr -- x )   0 swap 4 bounds ?DO  8 lshift I c@ +  LOOP ;
   67: : bw@ ( addr -- x )  0 swap 2 bounds ?DO  8 lshift I c@ +  LOOP ;
   68: 
   69: : gif? ( -- flag )
   70:     s" GIF89a" imgbuf over compare 0=
   71:     s" GIF87a" imgbuf over compare 0= or ;
   72: : gif-size ( -- w h )
   73:     imgbuf 6 + c@ imgbuf 7 + c@ 8 lshift +
   74:     imgbuf 8 + c@ imgbuf 9 + c@ 8 lshift + ;
   75: 
   76: : png? ( -- flag )
   77:     pngsig 8 imgbuf over compare 0= ;
   78: : png-size ( -- w h )
   79:     imgbuf $10 + b@ imgbuf $14 + b@ ;
   80: 
   81: : jpg? ( -- flag )
   82:     jfif 10 imgbuf over compare 0= ;
   83: : jpg-size ( fd -- w h )  >r
   84:     2.  BEGIN
   85: 	2dup r@ reposition-file throw
   86: 	imgbuf $10 r@ read-file throw 0<>
   87: 	imgbuf bw@ $FFC0 <> and  WHILE
   88: 	imgbuf 2 + bw@ 2 + 0 d+  REPEAT
   89:     2drop imgbuf 5 + bw@ imgbuf 7 + bw@  rdrop ;
   90: 
   91: : img-size ( fd -- w h )  >r
   92:     gif? IF  gif-size  rdrop EXIT  THEN
   93:     jpg? IF  r> jpg-size  EXIT  THEN
   94:     png? IF  png-size  rdrop EXIT  THEN
   95:     0 0 ;
   96: 
   97: : .img-size ( addr u -- )
   98:     r/o open-file throw >r
   99:     imgbuf $20 r@ read-file throw drop
  100:     r@ img-size
  101:     r> close-file throw
  102:     ?dup IF  0 <# #S #> width=   THEN
  103:     ?dup IF  0 <# #S #> height=  THEN ;
  104: 
  105: \ link creation
  106: 
  107: Variable link
  108: Variable link-suffix
  109: Variable iconpath
  110: 
  111: Variable do-size
  112: 
  113: : alt-suffix ( -- )
  114:     link-suffix $@len 2 - link-suffix $!len
  115:     s" [" link-suffix 0 $ins
  116:     s" ]" link-suffix $+!
  117:     link-suffix $@ alt= ;
  118: 
  119: : get-icon ( addr u -- )  iconpath @ IF  2drop  EXIT  THEN
  120:     link-suffix $! s" .*" link-suffix $+!
  121:     s" icons" open-dir throw >r
  122:     BEGIN
  123: 	pad $100 r@ read-dir throw  WHILE
  124: 	pad swap 2dup link-suffix $@ filename-match
  125: 	IF  s" icons/" iconpath $! iconpath $+!
  126: 	    iconpath $@ 2dup .img-size src=
  127: 	    alt-suffix  s" img" tag true
  128: 	ELSE  2drop  false  THEN
  129:     UNTIL  ELSE  drop  THEN
  130:     r> close-dir throw ;
  131: 
  132: : link-icon? ( -- )  iconpath @  IF  iconpath $off  THEN
  133:     link '. ['] get-icon $iter ;
  134: 
  135: : link-size? ( -- )  do-size @ 0= ?EXIT
  136:     link $@ r/o open-file IF  drop  EXIT  THEN >r
  137:     r@ file-size throw $400 um/mod nip ."  (" 0 u.r ." k)"
  138:     r> close-file throw ;
  139: 
  140: : link-options ( addr u -- addr' u' )
  141:     do-size off
  142:     over c@ '% = over 0> and IF  do-size on  1 /string  THEN ;
  143: 
  144: : .link ( -- )  '[ parse type '] parse '| $split
  145:     link-options link $!
  146:     link $@len 0= IF  2dup link $! s" .html" link $+!  THEN
  147:     link-icon? link $@ href= s" a" tagged
  148:     link-size? ;
  149: 
  150: : .img ( -- ) '{ parse type '} parse '| $split
  151:     dup IF  2swap alt=  ELSE  2drop  THEN
  152:     tag-option $@len >r over c@ >align tag-option $@len r> = 1+ /string
  153:     2dup .img-size src= s" img" tag ;
  154: 
  155: \ line handling
  156: 
  157: : char? ( -- c )  >in @ char swap >in ! ;
  158: : parse-tag ( addr u char -- )
  159:     >r r@ parse type
  160:     r> parse 2swap tagged ;
  161: 
  162: : .text ( -- ) 	>in @ >r char drop
  163:     source r@ /string >in @ r> - nip type ;
  164: 
  165: Create do-words  $100 0 [DO] ' .text , [LOOP]
  166: 
  167: : bind-char ( xt -- )  char cells do-words + ! ;
  168: 
  169: : char>tag ( -- ) char >r
  170: :noname bl sword postpone SLiteral r@ postpone Literal
  171:     postpone parse-tag postpone ; r> cells do-words + ! ;
  172: 
  173: char>tag * b
  174: char>tag _ em
  175: char>tag # code
  176: 
  177: ' .link bind-char [
  178: ' .img  bind-char {
  179: 
  180: : do-word ( char -- )  cells do-words + perform ;
  181: 
  182: : parse-line ( -- )
  183:     BEGIN  char? do-word source nip >in @ = UNTIL ;
  184: 
  185: : parse-to ( char -- ) >r
  186:     BEGIN  char? dup r@ <> WHILE
  187: 	do-word source nip >in @ = UNTIL  ELSE  drop  THEN
  188:     r> parse type ;
  189: 
  190: \ paragraph handling
  191: 
  192: : parse-par ( -- )
  193:     BEGIN  parse-line cr refill  WHILE
  194: 	source nip 0= UNTIL  THEN ;
  195: 
  196: : par ( addr u -- ) env? 2dup tag parse-par /tag cr cr ;
  197: : line ( addr u -- ) env? 2dup tag parse-line /tag cr cr ;
  198: 
  199: \ handle global tags
  200: 
  201: wordlist constant longtags
  202: 
  203: Variable end-sec
  204: 
  205: longtags set-current
  206: 
  207: : --- cr s" hr" tag cr ;
  208: : * s" h1" line ;
  209: : ** s" h2" line ;
  210: : *** s" h3" line ;
  211: : - s" ul" env s" li" par ;
  212: : + s" ol" env s" li" par ;
  213: : << +env ;
  214: : <* s" center" >env ;
  215: : >> -env ;
  216: : *> -env ;
  217: : . end-sec on ;
  218: : \ postpone \ ;
  219: 
  220: definitions
  221:     
  222: \ Table
  223: 
  224: Variable table-format
  225: Variable table#
  226: 
  227: : |tag  table-format $@ table# @ /string drop c@ >align
  228:     >env  1 table# +! ;
  229: : |d  table# @ IF  -env  THEN  s" td" |tag ;
  230: : |h  table# @ IF  -env  THEN  s" th" |tag ;
  231: : |line  s" tr" >env  table# off ;
  232: : line|  -env -env cr ;
  233: 
  234: : next-char ( -- char )  source drop >in @ + c@ ;
  235: 
  236: longtags set-current
  237: 
  238: : <| s" table" >env bl sword table-format $! ;
  239: : |> -env ;
  240: : +| |line
  241:     BEGIN
  242: 	|h '| parse-to next-char '+ =  UNTIL line| ;
  243: : -| |line
  244:     BEGIN
  245: 	|d '| parse-to next-char '- =  UNTIL line| ;
  246: 
  247: definitions
  248: 
  249: \ parse a section
  250: 
  251: : refill-loop ( -- )  end-sec off
  252:     BEGIN  refill  WHILE  >in off
  253: 	bl sword find-name
  254: 	?dup IF  name>int execute
  255: 	ELSE  source nip IF  >in off s" p" par  THEN  THEN
  256: 	end-sec @ UNTIL  THEN ;
  257: : parse-section ( -- )
  258:     get-order  longtags 1 set-order  refill-loop set-order ;
  259: 
  260: \ HTML head
  261: 
  262: : .title ( addr u -- )
  263:     .' <!doctype html public "-//w3c//dtd html 4.0 transitional//en">' cr
  264:     s" html" >env s" head" >env
  265:     .'   <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">' cr
  266:     s" title" tagged cr
  267:     -env ;
  268: 
  269: \ HTML trailer
  270: 
  271: Variable mail
  272: Variable mail-name
  273: 
  274: : .trailer
  275:     s" address" >env s" center" >env
  276:     ." Last modified: " time&date rot 0 u.r swap 1-
  277:     s" janfebmaraprmayjunjulaugsepoctnovdec" rot 3 * /string 3 min type
  278:     0 u.r ."  by "
  279:     mail $@ mailto: mail-name $@ s" a" tagged
  280:     -envs ;
  281: 
  282: \ top word
  283: 
  284: : parse" ( -- addr u ) '" parse 2drop '" parse ;
  285: 
  286: : maintainer
  287:     bl sword mail $! parse" mail-name $! ;
  288: 
  289: Variable style$
  290: : style> style$ @ 0= IF  s" " style$ $!  THEN  style$ $@ tag-option $! ;
  291: : >style tag-option $@ style$ $! s" " tag-option $! ;
  292: 
  293: : style  style> opt >style ;
  294: : background ( -- )  parse" s" background" style ;
  295: : text ( -- )  parse" s" text" style ;
  296:     warnings @ warnings off
  297: : link ( -- )  parse" s" link" style ;
  298:     warnings !
  299: : vlink ( -- ) parse" s" vlink" style ;
  300: : marginheight ( -- ) parse" s" marginheight" style ;
  301: 
  302: : wf ( -- )
  303:     outfile-id >r
  304:     bl sword r/w create-file throw to outfile-id
  305:     parse" .title
  306:     +env style> s" body" env env?
  307:     ['] parse-section catch .trailer
  308:     outfile-id close-file throw
  309:     r> to outfile-id
  310:     dup 0< IF  throw  ELSE  drop  THEN ;
  311: 
  312: \ simple text data base
  313: 
  314: : get-rest ( addr -- ) 0 parse -trailing rot $! ;
  315: 
  316: Variable last-entry
  317: Variable field#
  318: 
  319: : table: ( xt n -- )  Create , ,  1 field# !
  320:     DOES> 2@ >in @ >r longtags set-current
  321:     Create definitions swap , r> >in !
  322:     here last-entry !
  323:     dup 0 DO  0 ,  LOOP
  324:     1 DO  s" " last-entry @ I cells + $!  LOOP
  325:     last-entry @ get-rest
  326:     DOES> dup cell+ swap perform ;
  327: 
  328: : field:  Create field# @ , 1 field# +!
  329: DOES> @ cells last-entry @ + get-rest ;
  330: 
  331: : >field  ' >body @ cells postpone Literal postpone + ; immediate

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