int match(char *str, char *match)
{
int i;
int j;
int m_res;
i = 0;
j = 0;
while (str[i] != '\0' && match[j] != '\0')
{
avance_match(match, &j);
m_res = char_match(str[i], match[j]);
if (m_res == -1)
return (0);
if (m_res == 0)
++j;
else if (m_res == 1)
if (match[j + 1] == '\0')
return (1);
else if (char_match(str[i], match[j + 1]) == 0)
j += 2;
++i;
}
avance_match(match, &j);
if (str[i] == '\0' && match[j] == '*' && match[j + 1] == '\0')
return (1);
return (match[j] == '\0' ? 1 : 0);
}
int id_count_word_charset(char* str, char* charset)
{
int i;
int count_word;
i = 0;
count_word = 0;
while (str[i] != 0)
{
if (char_match(str[i], charset) == 1)
count_word = count_word + 1;
i = i + 1;
}
return count_word;
}
// a version of strtok(), recognises identifiers, integers, and single-char symbols
// NB: very unsafe; not re-entrant. Use with caution!
char *get_token (char *pLine)
{
static char *pNext;
static char saved;
char *pToken = NULL;
if (pLine)
{
pNext = pLine;
}
else if (pNext)
{
*pNext = saved;
}
if (!pNext)
return NULL;
// skip white space
while (*pNext && char_match (*pNext, " \t\n") )
{
pNext ++;
}
if (*pNext == 0)
// reached end of string
return NULL;
else
{
// find next token
pToken = pNext;
if (isalpha (*pNext))
{
// identifier is alpha (alpha|digit|"_")*
while (*pNext && ( isalpha(*pNext) || isdigit(*pNext) || (*pNext == '_' ) ) )
{
pNext ++;
}
}
else if (isdigit (*pNext) || char_match (*pNext, "+-"))
{
// number is [+|-] (digit)+ [. digit+]
pNext ++;
while (*pNext && isdigit (*pNext) )
{
pNext ++;
}
if (*pNext && *pNext == '.')
{
pNext ++;
while (*pNext && isdigit (*pNext) )
{
pNext ++;
}
}
}
else
{
// anything else is presumed to be single char token, e.g. "="
pNext ++;
}
saved = *pNext;
*pNext = 0;
return pToken;
}
}