[fpc-pascal] Error when translating a C header

[Ludo Brands]

The problem is in line 20: replace 
#define K_apostrophe  '\''  /* 39 */ 
with
#define K_apostrophe  ' '  /* 39 */
and h2pas will create iupkey.pp. Then, in iupkey.pp replace K_apostrophe = '
' with K_apostrophe = ''''
The problems aren't over yet. You'll need to replace K_quotedbl = '\"' with
K_quotedbl = '"' as well as other escaped characters such as K_backslash,
K_BS, etc. C escapes special characters with "\".
The main problem is that C mixes chars and integers freely while pascal
can't do that. So the functions generated for IUPcxCODE, etc won't work.
You'll need to check in IUP how the character codes are used, as characters
or as integers. Only then can the header file be translated. 

Ludo

> -----Message d'origine-----
> De : fpc-pascal-bounces at lists.freepascal.org 
> [mailto:fpc-pascal-bounces at lists.freepascal.org] De la part 
> de Luciano de Souza
> Envoyé : mardi 4 octobre 2011 03:12
> À : fpc-pascal at lists.freepascal.org
> Objet : [fpc-pascal] Error when translating a C header
> 
> 
> Hi listers,
> 
> I tried to translate a C header with:
> 
> h2pas -e -d -p iupkey.h
> 
> I got the following error:
> 
> at line 21 error : syntax error
> at line 41 error : syntax error
> Illegal character in line 45
> "#define K_at          '@'   /* 64 */"
> Illegal character in line 73
> "#define K_backslash   '\\'  /* 92 */"
> Illegal character in line 73
> "#define K_backslash   '\\'  /* 92 */"
> Illegal character in line 75
> "#define K_circum      '^'   /* 94 */"
> Illegal character in line 77
> "#define K_grave       '`'   /* 96 */"
> Illegal character in line 113
> "#define K_BS     '\b'       /* 8 */"
> Illegal character in line 114
> "#define K_TAB    '\t'       /* 9 */"
> Illegal character in line 115
> "#define K_LF     '\n'       /* 10 (0x0A) not a real key, is a 
> combination of CR with a modifier, just to document */"
> Illegal character in line 116
> "#define K_CR     '\r'       /* 13 (0x0D) */"
> LexLib: yytext overflow
> 
> I could understand if the Pascal unit was generated, but not 
> compiled. 
> What I can't understand is that even the Pascal unit, h2pas 
> was not able 
> to produce.
> 
> I am trying to translate it becouse it is very important for me. 
> Actually, I don't know C, but I hope I can complete the task.
> 
> I am blind and I am trying to create graphical interfaces. It 
> seems to 
> be so curious, but I can make sure the idea is reasonable and 
> suitable. 
> Of course, I cwon't conceive beautiful interfaces. But with 
> the help of 
> IUP, a graphical interface library which supports automatic layout, I 
> will produce dialogs  interacting very good with screen readers.
> 
> As my objective is to program to blind people, beauty is not 
> properly a 
> requirement. Having used IUP with Lua, I know it works, but 
> now, to use 
> it with Pascal, I need to overcome this initial difficulties.
> 
> Does someone know how to convert it? Why the unit, even wrong, is not 
> created?
> 
> Luciano
>