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/* Copyright (C) 2000-2002 by Salvador E. Tropea (SET),
see copyrigh file for details */
/**[txh]********************************************************************
Description:
Clipper parser used by bufun.cc when the syntax is Clipper 5.x.
***************************************************************************/
#define Uses_string
#define Uses_stdio
#define Uses_ctype
#define Uses_TVCodePage
#include <tv.h>
#include <bufun.h>
#if 0
FILE *f;
static
int GetChar()
{
return fgetc(f);
}
#else
static char *buffer;
static unsigned lenBuffer, indexBuffer;
static
int GetChar()
{
return indexBuffer>=lenBuffer ? EOF : buffer[indexBuffer++];
}
#endif
const int LargoMax=255;
static char FirstCol=1;
static int Line=1;
static
int GetUpToEOL()
{
int c;
do
{
c=GetChar();
}
while (c!='\n' && c!=EOF);
FirstCol=1;
Line++;
return c;
}
static
int GetWord()
{
int c,IndiceW=0;
do
{
c=GetChar();
switch (c)
{
case '"':
FirstCol=0;
do
{
c=GetChar();
}
while (c!='"' && c!='\n' && c!=EOF);
if (c=='\n')
{
FirstCol=1;
Line++;
}
if (IndiceW) return IndiceW;
break;
case '\'':
FirstCol=0;
do
{
c=GetChar();
}
while (c!='\'' && c!='\n' && c!=EOF);
if (c=='\n')
{
FirstCol=1;
Line++;
}
if (IndiceW) return IndiceW;
break;
case '*':
FirstCol=0;
c=GetChar();
if (c==' ')
{
c=GetChar();
if (c=='-')
{ // That's an EOL comment.
c=GetUpToEOL();
}
}
if (IndiceW) return IndiceW;
break;
case '/':
FirstCol=0;
c=GetChar();
if (c=='/')
{ // That's an EOL comment.
c=GetUpToEOL();
}
else
{
if (c=='*')
{ // Large comment
c=GetChar();
if (c=='\n') Line++;
do
{
if (c=='*')
{
c=GetChar();
if (c=='/')
break;
}
else
c=GetChar();
if (c=='\n') Line++;
}
while (c!=EOF);
FirstCol=0;
}
}
if (IndiceW) return IndiceW;
break;
case '&':
FirstCol=0;
c=GetChar();
if (c=='&')
c=GetUpToEOL();
if (IndiceW) return IndiceW;
break;
case '#':
if (FirstCol)
c=GetUpToEOL();
if (IndiceW) return IndiceW;
break;
default:
if (isalnum(c) || c=='_')
{
if (IndiceW<MaxLen)
bfBuffer[IndiceW++]=c;
}
else
{
if (c=='\n')
{
FirstCol=1;
Line++;
}
else
{
if (!isspace(c))
FirstCol=0;
}
if (IndiceW) return IndiceW;
}
}
}
while (c!=EOF);
return IndiceW;
}
static
int CheckStr(char *word, char *toCheck)
{
int l=0;
while (*toCheck && *word)
{
if (toupper(*toCheck)!=*word) return 0;
toCheck++; word++;
l++;
}
if (*toCheck) return 0;
return l>=4;
}
static
int Parsear(tAddFunc AddFunc, int mode)
{
int r,f,p,line=-1,funs=0,Static=0,lastReturn=-1,lenTemp=0;
FirstCol=1;
Line=1;
do
{
r=GetWord();
if (r)
{
bfBuffer[r]=0; p=0;
// Memorize the last return/quit
if (CheckStr("RETURN",bfBuffer) || CheckStr("QUIT",bfBuffer))
{
lastReturn=Line;
Static=0;
continue;
}
// Memorize if the static modifier is there
if (!Static)
{
Static=CheckStr("STATIC",bfBuffer);
if (Static) continue;
}
// Check if that's a function or procedure
f=CheckStr("FUNCTION",bfBuffer);
if (!f) p=CheckStr("PROCEDURE",bfBuffer);
if (f || p)
{
if (line>=0)
{ // We have one cached, add it
AddFunc(bfNomFun,lenTemp,line,lastReturn);
lastReturn=-1;
}
line=Line;
r=GetWord();
bfBuffer[r]=0;
if (r<MaxLen-5 && (mode & modeBFClassSep))
{
sprintf(bfNomFun,"%s (%c%c)",bfBuffer,
f ? 'F' : 'P', // Function or Procedure
Static ? 'S' : ' '); // Static or normal
lenTemp=r+6;
}
else
{
strcpy(bfNomFun,bfBuffer);
lenTemp=r+1;
}
//printf("%s %s %d\n",f ? "Function" : "Procedure",bfNomFun,line);
funs++;
}
Static=0;
}
}
while (r);
if (line>=0) // We have one cached, add it
AddFunc(bfNomFun,lenTemp,line,lastReturn);
return funs;
}
int SearchClipperFuncs(char *b, unsigned l, int mode, tAddFunc AddFunc)
{
buffer=b;
lenBuffer=l;
indexBuffer=0;
return Parsear(AddFunc,mode);
}
#if 0
int main(int argc, char *argv[])
{
if (argc!=2)
{
printf("Prueba de parser de Clipper, Copyright 2000 by Salvador E. Tropea\n");
printf("Uso: pclipper archivo\n");
return 1;
}
f=fopen(argv[1],"rt");
if (!f)
{
printf("No se pudo abrir %s\n",argv[1]);
return 2;
}
Parsear();
fclose(f);
return 0;
}
#endif
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