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api: allow wildcard "*" inside the mask in function string_match

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This commit is contained in:
Sébastien Helleu
2014-04-12 23:07:06 +02:00
parent 001ea53f9d
commit 34723d2acc
71 changed files with 1637 additions and 1504 deletions
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src/core/wee-string.c
+83 -68
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@@ -363,7 +363,8 @@ string_strcasestr (const char *string, const char *search)
/*
* Checks if a string matches a mask.
*
* Mask can begin or end with "*", no other "*" are allowed inside mask.
* The mask can contain wildcards ("*"), each wildcard matches 0 or more chars
* in the string.
*
* Returns:
* 1: string matches mask
@@ -373,78 +374,92 @@ string_strcasestr (const char *string, const char *search)
int
string_match (const char *string, const char *mask, int case_sensitive)
{
char last, *mask2;
int len_string, len_mask, rc;
const char *ptr_string, *ptr_mask, *pos_word, *pos_end;
char *word;
int wildcard, length_word;
if (!mask || !mask[0])
if (!string || !mask || !mask[0])
return 0;
/* if mask is "*", then any string matches */
if (strcmp (mask, "*") == 0)
ptr_string = string;
ptr_mask = mask;
while (ptr_mask[0])
{
wildcard = 0;
/* if we are on a wildcard, set the wildcard flag and skip it */
if (ptr_mask[0] == '*')
{
wildcard = 1;
ptr_mask++;
while (ptr_mask[0] == '*')
{
ptr_mask++;
}
if (!ptr_mask[0])
return 1;
}
/* no match if some mask without string */
if (!string[0])
return 0;
/* search the next wildcard (after the word) */
pos_end = strchr (ptr_mask, '*');
/* extract the word before the wildcard (or the end of mask) */
if (pos_end)
{
length_word = pos_end - ptr_mask;
}
else
{
length_word = strlen (ptr_mask);
pos_end = ptr_mask + length_word;
}
word = string_strndup (ptr_mask, length_word);
if (!word)
return 0;
/* check if the word is matching */
if (wildcard)
{
/* search the word anywhere in the string (from current position) */
pos_word = (case_sensitive) ?
strstr (ptr_string, word) : string_strcasestr (ptr_string, word);
if (!pos_word)
{
free (word);
return 0;
}
ptr_string = pos_word + length_word;
}
else
{
/* check if word is at beginning of string */
if ((case_sensitive
&& (strncmp (ptr_string, word, length_word) != 0))
|| (!case_sensitive
&& (string_strncasecmp (ptr_string, word,
utf8_strlen (word)) != 0)))
{
free (word);
return 0;
}
ptr_string += length_word;
}
free (word);
ptr_mask = pos_end;
}
/* match if no more string/mask */
if (!ptr_string[0] && !ptr_mask[0])
return 1;
len_string = strlen (string);
len_mask = strlen (mask);
last = mask[len_mask - 1];
/* mask begins with "*" */
if ((mask[0] == '*') && (last != '*'))
{
/* not enough chars in string to match */
if (len_string < len_mask - 1)
return 0;
/* check if end of string matches */
if ((case_sensitive && (strcmp (string + len_string - (len_mask - 1),
mask + 1) == 0))
|| (!case_sensitive && (string_strcasecmp (string + len_string - (len_mask - 1),
mask + 1) == 0)))
return 1;
/* no match */
return 0;
}
/* mask ends with "*" */
if ((mask[0] != '*') && (last == '*'))
{
/* not enough chars in string to match */
if (len_string < len_mask - 1)
return 0;
/* check if beginning of string matches */
if ((case_sensitive && (strncmp (string, mask, len_mask - 1) == 0))
|| (!case_sensitive && (string_strncasecmp (string,
mask,
len_mask - 1) == 0)))
return 1;
/* no match */
return 0;
}
/* mask begins and ends with "*" */
if ((mask[0] == '*') && (last == '*'))
{
/* not enough chars in string to match */
if (len_string < len_mask - 2)
return 0;
/* keep only relevant chars in mask for searching string */
mask2 = string_strndup (mask + 1, len_mask - 2);
if (!mask2)
return 0;
/* search string */
rc = ((case_sensitive && strstr (string, mask2))
|| (!case_sensitive && string_strcasestr (string, mask2))) ?
1 : 0;
/* free and return */
free (mask2);
return rc;
}
/* no "*" at all, compare strings */
if ((case_sensitive && (strcmp (string, mask) == 0))
|| (!case_sensitive && (string_strcasecmp (string, mask) == 0)))
return 1;
/* no match */
/* no match in other cases */
return 0;
}