Ativa o modulo Braille

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@1955 8e941d3f-bd1b-0410-a28a-d453659cc2b4
This commit is contained in:
sekelsenmat
2011-09-15 12:19:24 +00:00
parent d02c83c767
commit 05bb393d89
2 changed files with 183 additions and 114 deletions

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@ -16,7 +16,7 @@ type
ShortDescription: string;
Activated: Boolean;
constructor Create; virtual;
function HandleOnPageLoad(AInput: string; out AOutput: string): Boolean;
function HandleOnPageLoad(AInput: string; out AOutput: string): Boolean; virtual;
end;
procedure RegisterBrowserModule(AModule: TBrowserModule);

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@ -1,138 +1,207 @@
(* The function to_braille from this unit translates a string from UTF8 chars to Braille chars.
The dictionaries were taken from http://www.ibc.gov.br/?catid=110&blogid=1&itemid=479 and from http://www.braillevirtual.fe.usp.br/pt/Portugues/braille.html
(*
The function to_braille from this unit translates a string from UTF8 chars to Braille chars.
The dictionaries were taken from http://www.ibc.gov.br/?catid=110&blogid=1&itemid=479
and from http://www.braillevirtual.fe.usp.br/pt/Portugues/braille.html
Copyright 2011
*)
Unit utf8_braille;
unit utf8_braille;
interface
interface
Function Braille (Line: string): string;
{$mode objfpc}{$H+}
Type
dictionary = array[1..32] of string;
dictionary_pointer = ^dictionary;
uses
browsermodules, lclproc;
Const
type
number_signal = chr($e2) + chr($a0) + chr($bc);
caps_signal = chr($e2) + chr($a0) + chr($a8);
{ TBrailleBrowserModule }
d1:dictionary = ({!} chr($96), {"} chr($a6) , {#} 'TODO', {(*$*)} chr($b0) , {%} chr($b8)+chr($e2)+chr($a0)+chr($b4), {&} chr($af), {'} chr($84), {(} chr($a3)+chr($e2)+chr($a0)+chr($84), {)} chr($a0)+chr($e2)+chr($a0)+chr($9c), {*} chr($94), {+} chr($96), {,} chr($82), {-} chr($a4), {.} chr($84), {/} chr($90)+chr($e2)+chr($a0)+chr($b2), {0} chr($9a), {1} chr($81), {2} chr($83), {3} chr($89), {4} chr($99), {5} chr($91), {6} chr($8b), {7} chr($9b), {8} chr($93), {9} chr($8a), {:} chr($92), {;} chr($86), {<} chr($aa), {=} chr($b6), {>} chr($95), {?} chr($a2), {@} 'TODO');
TBrailleBrowserModule = class(TBrowserModule)
public
constructor Create; override;
function HandleOnPageLoad(AInput: string; out AOutput: string): Boolean; override;
end;
d2:dictionary = ({a} chr($81), {b} chr($83), {c} chr($89), {d} chr($99), {e} chr($91), {f} chr($8b), {g} chr($9b), {h} chr($93), {i} chr($8a), {j} chr($9a), {k} chr($85), {l} chr($87), {m} chr($8d), {n} chr($9d), {o} chr($95), {p} chr($8f), {q} chr($9f), {r} chr($97), {s} chr($8e), {t} chr($9e), {u} chr($a5), {v} chr($a7), {w} chr($ba), {x} chr($ad), {y} chr($bd), {z} chr($b5),'','','','','','');
function ConvertUTF8TextToBraille(Line: string): string;
function ConvertUTF8HtmlTextToBraille(AInput: string): string;
d3:dictionary = ({a + grave} chr($ab), {a + acute} chr($b7), {a + circumflex} chr($a1), {a + tilde} chr($9c), {a + diaeresis} 'TODO', {a + ring above} 'TODO', {ae} 'TODO', {c + cedilla} chr($af), {e + grave} chr($ae), {e + acute} chr($bf), {e + circumflex} chr($a3), {e + diaeresis} 'TODO', {i + grave} chr($a9), {i + acute} chr($8c), {i + circumflex} 'TODO', {i + diaeresis} chr($bb), {eth} 'TODO', {n + tilde} 'TODO', {o + grave} chr($ba), {o + acute} chr($ac), {o + circumflex} chr($b9), {o + tilde} chr($aa), {o + diaeresis} 'TODO', {division sign} 'TODO', {o + stroke} 'TODO', {u + grave} chr($b1), {u + acute} chr($be), {u + circumflex} 'TODO', {u + diaeresis} chr($b3), {y + acute} 'TODO', {thorn} 'TODO', {y + diaeresis} 'TODO');
implementation
implementation
type
dictionary = array[1..32] of string;
dictionary_pointer = ^dictionary;
Function Braille (Line: string): string;
const
Var
count, count_aux, n, n_aux, decr: integer;
Braille_string, string_aux: string;
num, accented: boolean;
dict_p: dictionary_pointer;
number_signal = chr($e2) + chr($a0) + chr($bc);
caps_signal = chr($e2) + chr($a0) + chr($a8);
begin
Braille_string := '';
num := False;
accented := False;
New(dict_p);
decr := 0;
count := 1;
n_aux := 0;
if Line = '' then
Braille := '';
while count <= length(Line) do
d1: dictionary = ({!} chr($96), {"} chr($a6), {#} 'TODO', {(*$*)} chr($b0),
{%} chr($b8) + chr($e2) + chr($a0) + chr($b4), {&} chr($af), {'} chr($84),
{(} chr($a3) + chr($e2) + chr($a0) + chr($84), {)} chr($a0) + chr($e2) + chr($a0) + chr($9c),
{*} chr($94), {+} chr($96), {,} chr($82), {-} chr($a4), {.} chr($84),
{/} chr($90) + chr($e2) + chr($a0) + chr($b2), {0} chr($9a), {1} chr($81),
{2} chr($83), {3} chr($89), {4} chr($99), {5} chr($91), {6} chr($8b),
{7} chr($9b), {8} chr($93), {9} chr($8a), {:} chr($92), {;} chr($86),
{<} chr($aa), {=} chr($b6), {>} chr($95), {?} chr($a2), {@} 'TODO');
begin
if Line[count] = ' ' then {reproduce the empty space and go to next iteration}
begin
Braille_string := Braille_string + chr($e2)+chr($a0)+chr($80);
count := count + 1;
continue
end;
d2: dictionary = ({a} chr($81), {b} chr($83), {c} chr($89), {d} chr($99),
{e} chr($91), {f} chr($8b), {g} chr($9b), {h} chr($93), {i} chr($8a),
{j} chr($9a), {k} chr($85), {l} chr($87), {m} chr($8d), {n} chr($9d),
{o} chr($95), {p} chr($8f), {q} chr($9f), {r} chr($97), {s} chr($8e),
{t} chr($9e), {u} chr($a5), {v} chr($a7), {w} chr($ba), {x} chr($ad),
{y} chr($bd), {z} chr($b5), '', '', '', '', '', '');
if accented then {if the last iteration found n = 195, it means we have an accented character. Print it and go to next iteration}
begin
dict_p^ := d3;
decr := 159;
n := ord(Line[count]);
if n < 160 then {if it's a capital letter, put the caps signal and change to minuscule}
begin
Braille_string := Braille_string + caps_signal;
n := n + 32
end;
Braille_string := Braille_string + chr($e2) + chr($a0) + (dict_p^)[n-decr];
accented := False;
count := count + 1;
continue
end;
d3: dictionary = ({a + grave} chr($ab), {a + acute} chr($b7),
{a + circumflex} chr($a1), {a + tilde} chr($9c), {a + diaeresis} 'TODO',
{a + ring above} 'TODO', {ae} 'TODO', {c + cedilla} chr($af),
{e + grave} chr($ae), {e + acute} chr($bf), {e + circumflex} chr($a3),
{e + diaeresis} 'TODO', {i + grave} chr($a9), {i + acute} chr($8c),
{i + circumflex} 'TODO', {i + diaeresis} chr($bb), {eth} 'TODO',
{n + tilde} 'TODO', {o + grave} chr($ba), {o + acute} chr($ac),
{o + circumflex} chr($b9), {o + tilde} chr($aa), {o + diaeresis} 'TODO',
{division sign} 'TODO', {o + stroke} 'TODO', {u + grave} chr($b1),
{u + acute} chr($be), {u + circumflex} 'TODO', {u + diaeresis} chr($b3),
{y + acute} 'TODO', {thorn} 'TODO', {y + diaeresis} 'TODO');
n := ord(Line[count]);
function ConvertUTF8TextToBraille(Line: string): string;
var
Count, count_aux, n, n_aux, decr: integer;
Braille_string, string_aux: string;
num, accented: boolean;
dict_p: dictionary_pointer;
if ((n >= 97) and (n <= 122)) then {if the char is a letter, choose d2}
begin
dict_p^ := d2;
decr := 96
end
else
if n = 195 then {if the char is an accented letter, flag it and go to next iteration}
begin
accented := True;
count := count + 1;
continue
end
begin
Braille_string := '';
num := False;
accented := False;
New(dict_p);
decr := 0;
Count := 1;
n_aux := 0;
if Line = '' then Result := '';
else
if ((n >= 65) and (n <= 90)) then {if it's a capital letter, choose d2 and see if it's only the first letter or if there are more capital letters}
begin
dict_p^ := d2;
decr := 96 - 32;
string_aux := chr($e2) + chr($a0) + (dict_p^)[n-decr];
count_aux := count + 1;
if count_aux > length(Line) then
begin
Braille_string := Braille_string + caps_signal + string_aux;
break
end;
n_aux := ord(Line[count_aux]);
while ((n_aux >= 65) and (n_aux <= 90)) do
begin
string_aux := string_aux + chr($e2) + chr($a0) + (dict_p^)[n_aux-decr];
count_aux := count_aux + 1;
if count_aux > length(Line) then
break;
n_aux := ord(Line[count_aux]);
end;
if length(string_aux) > 3 then
Braille_string := Braille_string + caps_signal + caps_signal + string_aux
else
Braille_string := Braille_string + caps_signal + string_aux;
count := count_aux;
continue
end
else {or else, choose d1}
begin
dict_p^ := d1;
decr := 32
end;
while Count <= length(Line) do
if num and not (((n >= 48) and (n <= 57)) or (n = 46) or (n = 44)) then {if the whole number has already been printed, change num to False again}
num:=False;
begin
if Line[Count] = ' ' then {reproduce the empty space and go to next iteration}
begin
Braille_string := Braille_string + chr($e2) + chr($a0) + chr($80);
Count := Count + 1;
continue;
end;
if not num and ((n >= 48) and (n <= 57)) then {if it's the first number to appear, print the number signal first}
begin
Braille_string := Braille_string + number_signal;
num := True;
end;
if accented then
{if the last iteration found n = 195, it means we have an accented character. Print it and go to next iteration}
begin
dict_p^ := d3;
decr := 159;
n := Ord(Line[Count]);
if n < 160 then
{if it's a capital letter, put the caps signal and change to minuscule}
begin
Braille_string := Braille_string + caps_signal;
n := n + 32;
end;
Braille_string := Braille_string + chr($e2) + chr($a0) + (dict_p^)[n - decr];
accented := False;
Count := Count + 1;
continue;
end;
Braille_string := Braille_string + chr($e2) + chr($a0) + (dict_p^)[n-decr];
n := Ord(Line[Count]);
count := count + 1;
end;
if ((n >= 97) and (n <= 122)) then {if the char is a letter, choose d2}
begin
dict_p^ := d2;
decr := 96;
end
else
if n = 195 then {if the char is an accented letter, flag it and go to next iteration}
begin
accented := True;
Count := Count + 1;
continue;
end
Braille := Braille_string;
else
if ((n >= 65) and (n <= 90)) then
{if it's a capital letter, choose d2 and see if it's only the first letter or if there are more capital letters}
begin
dict_p^ := d2;
decr := 96 - 32;
string_aux := chr($e2) + chr($a0) + (dict_p^)[n - decr];
count_aux := Count + 1;
if count_aux > length(Line) then
begin
Braille_string := Braille_string + caps_signal + string_aux;
break;
end;
n_aux := Ord(Line[count_aux]);
while ((n_aux >= 65) and (n_aux <= 90)) do
begin
string_aux := string_aux + chr($e2) + chr($a0) + (dict_p^)[n_aux - decr];
count_aux := count_aux + 1;
if count_aux > length(Line) then
break;
n_aux := Ord(Line[count_aux]);
end;
if length(string_aux) > 3 then
Braille_string := Braille_string + caps_signal + caps_signal + string_aux
else
Braille_string := Braille_string + caps_signal + string_aux;
Count := count_aux;
continue;
end
else {or else, choose d1}
begin
dict_p^ := d1;
decr := 32;
end;
if num and not (((n >= 48) and (n <= 57)) or (n = 46) or (n = 44)) then
{if the whole number has already been printed, change num to False again}
num := False;
if not num and ((n >= 48) and (n <= 57)) then
{if it's the first number to appear, print the number signal first}
begin
Braille_string := Braille_string + number_signal;
num := True;
end;
Braille_string := Braille_string + chr($e2) + chr($a0) + (dict_p^)[n - decr];
Count := Count + 1;
end;
Result := Braille_string;
end;
function ConvertUTF8HtmlTextToBraille(AInput: string): string;
begin
Result := ConvertUTF8TextToBraille(AInput);
end;
{ TBrailleBrowserModule }
constructor TBrailleBrowserModule.Create;
begin
inherited Create;
ShortDescription := 'Braille Module';
end;
function TBrailleBrowserModule.HandleOnPageLoad(AInput: string; out
AOutput: string): Boolean;
begin
AOutput := ConvertUTF8HtmlTextToBraille(AInput);
end;
initialization
RegisterBrowserModule(TBrailleBrowserModule.Create());
end.
end;
End.