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api: add arguments "index_start" and "index_end" in function string_rebuild_split_string

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This commit is contained in:
Sébastien Helleu
2022-07-20 13:16:35 +02:00
parent 62e68f965f
commit b7441bd7a3
31 changed files with 241 additions and 64 deletions
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src/core/wee-string.c
+31 -12
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@@ -2445,39 +2445,58 @@ string_free_split_shared (char **split_string)
}
/*
* Rebuilds a split string using a delimiter.
* Rebuilds a split string using a delimiter and optional index of start/end
* string.
*
* If index_end < 0, then all arguments are used until NULL is found.
* If NULL is found before index_end, then the build stops there (at NULL).
*
* Note: result must be free after use.
*/
char *
string_rebuild_split_string (const char **split_string,
const char *separator)
const char *separator,
int index_start, int index_end)
{
int i, length, length_separator;
char *result;
if (!split_string)
if (!split_string || (index_start < 0)
|| ((index_end >= 0) && (index_end < index_start)))
{
return NULL;
}
length = 0;
length_separator = (separator) ? strlen (separator) : 0;
for (i = 0; split_string[i]; i++)
{
length += strlen (split_string[i]) + length_separator;
if ((index_end >= 0) && (i > index_end))
break;
if (i >= index_start)
length += strlen (split_string[i]) + length_separator;
}
result = malloc (length + 1);
if (result)
{
result[0] = '\0';
if (length == 0)
return strdup ("");
for (i = 0; split_string[i]; i++)
result = malloc (length + 1);
if (!result)
return NULL;
result[0] = '\0';
for (i = index_start; split_string[i]; i++)
{
if ((index_end >= 0) && (i > index_end))
break;
strcat (result, split_string[i]);
if (separator && ((index_end < 0) || (i + 1 <= index_end))
&& split_string[i + 1])
{
strcat (result, split_string[i]);
if (separator && split_string[i + 1])
strcat (result, separator);
strcat (result, separator);
}
}