下面是rtf2html的源代码,为何调试总通不过,说是list bound(0) out bound,请帮忙(100分)

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我的环境WIN2K+DELPHI6
{$D-,L-,Y-}
unit rtf2html;
(*
--------------------------------------------------------------------------------
Revision history:
Nb. Date: Author What was do
ne.
003 ? ? ?
002 21-aug-1997 TSE Minor (very minor) cleanup before release
001 20-aug-1997 TSE Unit created - RtfToHTML function
designed and written.
Author list:
TSE Troels Skovmand Eriksen TSEriksen@cyberdude.com
TSErikse@post8.tele.dk
? ? ?
Supported features:
rev. 001 Indents, Bullets, Left-, Centered &
Rightjustified text,
Text styles (bold, italics and underline),
Fonts (face, size, color).
rev. 002 - do
-
rev. 3 ?
--------------------------------------------------------------------------------
This unit and all procedures and functions herein is released as
freeware. Any components or units created using this unit or
portions hereoff must be released as freeware (This do
es not
cover applications - they may be shareware/commercial as needed).
Part of the function RtfToHTML may be covered by some obscure
Microsoft copyright since it reads the RTF format - check it out
yourself, if you do
something worthwhile.
Please let this preface stay if you publish a changed/updated
version of this unit and write all changes the "Revision history"
section above. Who-Dun-it information should be inserted in the
"Author list" and the "Supported features" section should be updated.
This makes it easier to pass the blame :-)
I'm finished with this unit for now - but please email a copy of
any changes you make to me - Troels S Eriksen.
--------------------------------------------------------------------------------
The following should be fixed - if anybody want to do
it?
* Should be rewritten into a conversion class - could be tricky, since
it seems like a stream only contains 4 Kb at a time ...
* Code should be cleaned up - this below is not that fast ...
* The indents (/li###) should be translated to <BLOCKQUOTE> or
just a <UL> with no <LI> elements.
* The hanging paragraphs should be translated to definitionlists ( the
<DL COMPACT> <DT> term <DD> definition </DL> structure )
* Tabs (/tab) should be fixed somehow ( heck, I do
want
a <TAB> code ! )
* Embedded objects / pictures should be converted to .gif's
- I know it's possible
* Some nice way to handle links ( the way .rtf-sources for
helpfiles do
? )
* A even more nice way of handling tables - could fix the
indent / tab-problems as well
--------------------------------------------------------------------------------
The idea and logic behind this weirdo function :
Well, the idea was to write a pascal RTF-2-HTML converter which
doesn't just do
some "search and replace" - but actually converts
the dammed stuff.
Since there's a difference between HTML and RTF in the
code-sequencing, I decided to try storing all paragraph and
textformatting information in two records (PARFMT and
TXTFMT) and only write the contents of these to the output
"stream" when needed.
This first attempt is successfull - not highly, but it'll convert
the contents of a TRichEdit control and most other .rtf do
cuments
to HTML and keep the general layout.
Enjoy it
Troels S Eriksen, Denmark
--------------------------------------------------------------------------------
*)
{$LONGSTRINGS ON}
interface
function RtfToHtml(const rtf:string):string;
implementation
uses
Classes, SysUtils;
function RtfToHtml(const rtf:string):string;
type
TState = record
FntTbl : boolean;
ColTbl : boolean;
FntLst,
ColLst : TStringList;
end;

TPARFMT = record
Alignment : TAlignment;
{ h鴍re, venstre, centreret tekst }
Bullets : integer; { Skriv bulletliste <UL> = 1
Skriv element <LI> = 2
Skriv element slut </LI> = 3
Skriv liste slut </UL> = 4 }
Written : boolean; { true hvis skrevet til streng }
end;

TTXTFMT = record
ChangeF : boolean;
DefFont : integer;
Font : integer;
Fontsize : integer;
Color : integer;
Bold : integer;
Italics : integer;
Underline : integer;
Written : boolean;
end;

var
indx : integer;
// index i rtf-streng
ParFmt : TParFmt;
TxtFmt : TTxtFmt;
State : TState;
Group : integer;
Col : string[10];
Fnt : string[63];
procedure WriteChar(c:Char);
var
S : string;
begin
s:='';
// First - get ready to write paragraph formatting
With PARFMT do
if not Written then
begin
// TextAttr's must be off before starting a new paragraph
{
add "uses forms" to the implementation or interface statement,
then
call application.processmessages here - this would allow
you to work the application interface will saving a large file.
}
With TXTFMT do
begin
if bold>1 then
begin
s:=s+'</B>';
if bold=3 then
bold:=0;
end;
if italics>1 then
begin
s:=s+'</I>';
if italics=3 then
Italics:=0;
end;
if underline>1 then
begin
s:=s+'</U>';
if underline=3 then
Underline:=0;
end;
end;
{ Write either bulletlist or left-, center, rightjustified paragraph
(doing it this way makes bulletlists leftjustified no matter what) }
case Bullets of
0 : case Alignment of
taLeftJustify : s:=s+#13#10'<P>';
taRightJustify: s:=s+#13#10'<P ALIGN=RIGHT>';
taCenter : s:=s+#13#10'<P ALIGN=CENTER>';
end;
1 : s:=s+#13#10'<UL>';
2 : s:=s+#13#10'<LI>';
3 : s:=s+'</LI>';
4 : begin
s:=s+#13#10'</UL>';
Bullets:=0;
end;
5 : begin
s:=s+'<BR>'#13#10#160#32#160#32#160;
Bullets:=0;
end;
end;
// If any textattr's was on before - they are re-enabled
With TXTFMT do
begin
If Bold=2 then
s:=s+'<B>';
If Italics=2 then
s:=s+'<I>';
If Underline=2 then
s:=s+'<U>';
end;
Written:=TRUE;
end;
{ PARFMT }
// Second - Write any textattr's
With TXTFMT do
if not written then
begin
// If font has changed - write it
If changeF then
begin
s:=s+'<FONT FACE="'+state.fntlst.strings[Font]+
'" COLOR="'+state.collst.strings[Color]+
'" SIZE="'+IntToStr(FontSize)+'">';
ChangeF:=FALSE;
end;
// If any textattr's should be written - do
it
case Bold of
1 : begin
s:=s+'<B>';
bold:=2;
end;
3 : begin
s:=s+'</B>';
Bold:=0;
end;
end;
case Italics of
1 : begin
s:=s+'<I>';
Italics:=2;
end;
3 : begin
s:=s+'</I>';
Italics:=0;
end;
end;
case Underline of
1 : begin
s:=s+'<U>';
Underline:=2;
end;
3 : begin
s:=s+'</U>';
Underline:=0;
end;
end;
Written:=TRUE;
end;
// At last - write the character it self
case c of
#0 : result:=result+s;
// Writes pending codes only
#9 : result:=result+s+#9;
// Writes tab char
'>' : result:=result+s+'&gt';
// Writes "greater than"
'<' : result:=result+s+'&lt';
// Writes "less than"
else
result:=result+s+c;
// Writes a character
end;
end;
{ WriteChar }
function Resolve(c:char):integer;
{ Convert char to integer value - used to decode /'## to an ansi-value }
begin
case byte(c) of
48..57 : Result:=byte(c)-48;
65..70 : Result:=byte(c)-55;
else
Result:=0;
end;
end;
{ resolve }
function CollectCode(i:integer):integer;
var
Value,
Keyword : string;
a : integer;
begin
KeyWord:='';
// First - check if keyword is any "special" keyword or is a normal one ...
case rtf[i+1] of
'*' : begin
// Ignorre to end of group
a:=group;
repeat
case rtf of
'{' : inc(group);
'}' : dec(group);
end;
inc(i);
until (group+1)=a;
result:=i-1;
end;
#39 : begin
// Decode hex value
WriteChar(char(resolve(upcase(rtf[i+2]))*16+resolve(upcase(rtf[i+3]))));
Inc(i,3);
result:=i;
end;
'/','{','}' : begin
// Return special character
WriteChar(rtf[i+1]);
inc(i);
result:=i;
end;
else
begin
// First - get keyword ...
repeat
keyword:=keyword+rtf;
inc(i);
until (rtf in ['{','/','}',' ',';','-','0'..'9']);
// Second - get any value following ...
Value :='';
While (rtf in ['a'..'z','-','0'..'9']) do
begin
value:=value+rtf;
inc(i);
end;
if rtf=' ' then
inc(i);
while (rtf in ['{','}',';']) do
inc(i);
result:=i-1;
{ Check which keyword and what to do
- NB: Test shows that using
IF then
else
.. is approx. 10% more efficient than calling EXIT }
if keyword='/par' then
with PARFMT do
begin
// New paragraph or bullet item
if Bullets=2 then
Bullets:=3;
Written:=FALSE;
end else
if keyword='/f' then
case state.fnttbl of
true : begin
// Make fontlist
fnt:='';
While rtf<>' ' do
inc(i);
// Ignore fontfamily info etc
inc(i);
While rtf<>';' do
begin
// Read font name
Fnt:=Fnt+rtf;
inc(i);
end;
dec(group);
// Stop group
result:=i+1;
// Move one beyond group end
State.FntLst.Add(Fnt); // Add fontname to fontlist
end;
{ true }
false: With TXTFMT do
begin
// Use fontlist
a:=StrToIntDef(value,0);
if font<>a then
begin
// Change Textattr's to new font
ChangeF:=TRUE;
Written:=FALSE;
FONT :=a;
end;
end;
{ false }
end else
if keyword='/plain' then
with TXTFMT do
begin
// Zero textattr's
If bold=2 then
Bold:=3;
If Italics=2 then
Italics:=3;
If Underline=2 then
Underline:=3;
if (bold=3) or (italics=3) or (underline=3) or (Color<>0) then
begin
color:=0;
Written:=FALSE;
WriteChar(#0);
end;
end else
if keyword='/fs' then
with TXTFMT do
begin
// Change fontsize
case StrToIntDef(value,11) div 2 of
1.. 5 : a:=1;
6.. 9 : a:=2;
10..11 : a:=3;
12..13 : a:=4;
14..15 : a:=5;
else
a:=6;
end;
if a<>Fontsize then
begin
Written:=False;
Fontsize:=a;
ChangeF:=TRUE;
end;
end else
if keyword='/tab' then
begin
WriteChar(#9);
end else
if keyword='/ul' then
with TXTFMT do
begin
// Set underline
Written:=FALSE;
if underline=0 then
Underline:=1;
end else
if keyword='/b' then
with TXTFMT do
begin
// Set bold
Written:=FALSE;
if bold=0 then
Bold:=1;
end else
if keyword='/i' then
with TXTFMT do
begin
// Set italics
Written:=FALSE;
if italics=0 then
Italics:=1;
end else
if keyword='/cf' then
with TXTFMT do
begin
// Change fontcolor
a:=StrToIntDef(value,0);
If Color<>a then
begin
Written:=FALSE;
ChangeF:=TRUE;
Color:=a;
end;
end else
if keyword='/qc' then
begin
// Set paragraphformat (center)
PARFMT.Alignment:=taCenter;
PARFMT.Written:=FALSE;
end else
if keyword='/qr' then
begin
// Set paragraphformat (right)
PARFMT.Alignment:=taRightJustify;
PARFMT.Written:=FALSE;
end else
if keyword='/pntext' then
with PARFMT do
begin
// Start bullet list item
Written :=FALSE;
Bullets :=2;
a:=group;
repeat
case rtf of
'{' : inc(group);
'}' : dec(group);
end;
inc(i);
until (group+1)=a;
result:=i-1;
end else
if keyword='/fi' then
with PARFMT do
begin
// Start bullet list
Written :=FALSE;
Bullets :=1;
WriteChar(#0);
end else
if keyword='/pard' then
with PARFMT do
begin
// Stop paragraph / Bulletlist
Alignment:=taLeftJustify;
If Bullets>0 then
Bullets:=4;
Written:=FALSE;
end else
if keyword='/red' then
begin
col:='#'+IntToHex(StrToIntDef(value,255),2);
// Get Red color
end else
if keyword='/green' then
begin
col:=col+IntToHex(StrToIntDef(value,255),2);
// Get Green color
end else
if keyword='/blue' then
begin
col:=col+IntToHex(StrToIntDef(value,255),2);
// Get blue color
State.ColLst.Add(col);
// Add RGB in colorlist
end else
if keyword='/deff' then
with TXTFMT do
begin
DefFont:=StrToIntDef(value,0);
// Default font
end else
if keyword='/fonttbl' then
begin
state.fnttbl:=true;
// Create font-list
end else
if keyword='/colortbl' then
begin
state.coltbl:=true;
// Create color-list
end else
if keyword='/deflang' then
begin
state.fnttbl:=False;
// Update is finished
With PARFMT do
begin
// Setup paragraphformat
Alignment:=taLeftJustify;
Written:=false;
Bullets:=0;
end;
With TXTFMT do
begin
// Setup font-format
Font :=DefFont;
Fontsize :=3;
Color :=0;
Bold :=0;
Italics :=0;
Underline :=0;
Written :=false;
end;
state.coltbl:=True;
// Update is finished
end;
{ last if then
}
end;
{ case else
}
end;
end;
{ collectcode }
function CleanUp(s:string):string;
// This could be do
ne without, but - hey - it's nice
var
a : integer;
begin
// Nice up any empty <P>aragraph statements
While pos(#13#10'<P>'#13#10'<P',s)>0 do
begin
a:=pos(#13#10'<P>'#13#10'<P',s);
system.delete(s,a,6);
system.insert('</P>',s,a);
end;
result:=s;
end;
{ cleanup }
var
crsr : integer;
begin
try
State.FntLst:=TstringList.Create;
// Create fontlist
State.ColLst:=TstringList.Create;
// Create colorlist
indx:=0;
result:='';
repeat
inc(indx);
case rtf[indx] of
#0..#31 : ;
// Ascii ctrl-char - ignorre
'{' : Inc(group);
'}' : Dec(group);
'/' : indx:=collectcode(indx);
// Code found - the fun starts ...
else
begin
WriteChar(rtf[indx]);
// Write char and any pending html-codes ...
Inc(indx);
// Speedwrite normal chars till next special one
while (indx<length(rtf)) and
not (rtf[indx] in ['{','}','/','<','>',#00..#31]) do
begin
result:=result+rtf[indx];
inc(indx);
end;
dec(indx);
end;

end;
until indx=length(rtf);
finally
result:=cleanup(result); // Return the HTML do
cument
State.FntLst.free;
State.ColLst.free;
end;
end;

end.
 
Col : string[10];
<<==这两个改大一点试试
Fnt : string[63];
rtf[indx] <<=== 问题也可能出在这边 ,debug一下看看
 
很感谢淡淡的笑,上次我的问题多谢你的帮忙,只是那个问题还没有结,结了给你另外加分。
我现在没有DELPHI环境,能不能请您帮我调试一下,
另外会不会和RTF的版本有关
RTF不同的版本是不是格式也不同阿?
 
什么都不用改,,我这边正常编译通过.. d5 w2k
rtf版本应该没什么区别的.
MS RTF 格式定义 http://support.microsoft.com/support/kb/articles/Q86/9/99.asp
 
我试了,用Rxlib的RxRichEdit控件读入Rtf文件,经
RxRichedit2.lines.text:=RtfToHtml(RxRichEdit1.lines.text);
转换,没报错,但效果太差。
 
哎,它的代码应该没有问题了。看来是我的机器问题。
可这个问题会出在那?
我的程序在自己的机器上会提示这个错误,可到其他的机器上却好了。奇怪
我的机器配置WIN2K SERVER +OFFICE2K+DELPHI6
哦,对了会不会是DELPHI6出了问题,我每次新打开工程,就会出现错误*.RES,*.FRM
没有创建
 
多人接受答案了。
 

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