%option noyywrap
%option always-interactive
%option noinput
%option nounput
%x COMMENT
%x STRING
%x TYPEDEF
%{
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int depth;
%}
ID [a-zA-Z][a-zA-Z0-9_]*
%%
"/*" BEGIN(COMMENT);
<COMMENT>"*/" BEGIN(INITIAL);
"\"" BEGIN(STRING);
<STRING>"\\\"" /* eat escaped double quotes */
<STRING>"\"" BEGIN(INITIAL);
{ID} {
if (strcmp(yytext,"typedef") == 0)
{
depth = 0;
BEGIN(TYPEDEF);
}
}
<TYPEDEF>"{" depth++;
<TYPEDEF>"}" depth--;
<TYPEDEF>{ID}("["[0-9, ]+"]")*[ \t\n]*";" {
if (depth == 0)
{
int n;
n = 0;
while (yytext[n] != ';' &&
yytext[n] != '[' &&
!isspace(yytext[n]))
{
n++;
}
yytext[n] = '\0';
fprintf(yyout, "%s\n", yytext);
BEGIN(INITIAL);
}
}
<*>.|"\n" /* eat up characters */
%%
int main(int argc, char *argv[])
{
if (argc > 1)
{
yyin = fopen(argv[1], "r");
if (yyin == NULL)
{
fprintf(stderr, "ERROR: could not open file\n");
exit(1);
}
}
else
{
yyin = stdin;
}
yyout = stdout;
yylex();
return 0;
}