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api: add callback in function string_replace_regex

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This commit is contained in:
Sebastien Helleu
2014-03-13 10:59:58 +01:00
parent c8f574d730
commit cd65198c71
8 changed files with 103 additions and 25 deletions
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src/core/wee-string.c
+37 -6
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@@ -1154,7 +1154,9 @@ string_replace (const char *string, const char *search, const char *replace)
char *
string_replace_regex_get_replace (const char *string, regmatch_t *regex_match,
int last_match, const char *replace,
const char reference_char)
const char reference_char,
char *(*callback)(void *data, const char *text),
void *callback_data)
{
int length, length_current, length_add, match;
const char *ptr_replace, *ptr_add;
@@ -1208,8 +1210,26 @@ string_replace_regex_get_replace (const char *string, regmatch_t *regex_match,
}
if (regex_match[match].rm_so >= 0)
{
ptr_add = string + regex_match[match].rm_so;
length_add = regex_match[match].rm_eo - regex_match[match].rm_so;
if (callback)
{
temp = string_strndup (string + regex_match[match].rm_so,
regex_match[match].rm_eo - regex_match[match].rm_so);
if (temp)
{
modified_replace = (*callback) (callback_data, temp);
if (modified_replace)
{
ptr_add = modified_replace;
length_add = strlen (modified_replace);
}
free (temp);
}
}
if (!ptr_add)
{
ptr_add = string + regex_match[match].rm_so;
length_add = regex_match[match].rm_eo - regex_match[match].rm_so;
}
}
}
else if ((ptr_replace[1] == '.')
@@ -1308,6 +1328,11 @@ string_replace_regex_get_replace (const char *string, regmatch_t *regex_match,
* (the char '*' can be replaced by any char between space (32)
* and '~' (126))
*
* If the callback is not NULL, it is called for every reference to a match
* (except for matches replaced by a char).
* If not NULL, the string returned by the callback (which must have been newly
* allocated) is used and freed after use.
*
* Examples:
*
* string | regex | replace | result
@@ -1322,7 +1347,9 @@ string_replace_regex_get_replace (const char *string, regmatch_t *regex_match,
char *
string_replace_regex (const char *string, void *regex, const char *replace,
const char reference_char)
const char reference_char,
char *(*callback)(void *data, const char *text),
void *callback_data)
{
char *result, *result2, *str_replace;
int length, length_replace, start_offset, i, rc, end, last_match;
@@ -1373,9 +1400,13 @@ string_replace_regex (const char *string, void *regex, const char *replace,
/* check if the regex matched the end of string */
end = !result[regex_match[0].rm_eo];
str_replace = string_replace_regex_get_replace (result, regex_match,
str_replace = string_replace_regex_get_replace (result,
regex_match,
last_match,
replace, reference_char);
replace,
reference_char,
callback,
callback_data);
length_replace = (str_replace) ? strlen (str_replace) : 0;
length = regex_match[0].rm_so + length_replace +