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/*
* A quick and dirty C program to spit out possible identifiers
* from a stream of *.c and *.h files. Takes a single parameter
* which specifies the minimum length of an identifier to be
* extracted.
*
*/
#include <stdio.h>
#include <ctype.h>
#define FIRSTCHAR(a) (isalpha(a) || (a)=='_')
#define OTHERCHAR(a) (FIRSTCHAR(a) || isdigit(a))
#define TRUE 1
#define FALSE 0
int size = 0;
char buffer[512];
char *bp = buffer;
main (argc, argv)
int argc;
char *argv[];
{
register int ch;
register int spitout;
register int eating_comment;
if (argc == 2)
{
size = atoi (argv[1]);
}
spitout = FALSE;
eating_comment = FALSE;
while ((ch = getchar()) != EOF)
{
if (ch == '/')
{
if ((ch = getchar()) == EOF)
{
fprintf (stderr, "unexpected EOF!\n");
exit (1);
}
else
{
if (ch == '*')
{
eating_comment = TRUE;
}
else
{
ungetc (ch, stdin);
}
}
}
else if (eating_comment && ch == '*')
{
if ((ch = getchar()) == EOF)
{
fprintf (stderr, "unexpected EOF!\n");
exit (1);
}
else
{
if (ch == '/')
{
eating_comment = FALSE;
}
else
{
ungetc (ch, stdin);
}
}
}
else if (!eating_comment)
{
if (!spitout && FIRSTCHAR(ch))
{
spitout = TRUE;
*bp++ = ch;
}
else if (spitout && OTHERCHAR(ch))
{
*bp++ = ch;
}
else if (spitout)
{
*bp++ = '\000';
bp = buffer;
if (strlen (bp) >= size)
{
printf ("%s\n", bp);
}
spitout = FALSE;
}
}
}
return (0);
}
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