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This commit is contained in:
Sergey Poznyakoff 2018-08-16 09:32:59 +03:00
parent cd169165d8
commit 5f13fe76ab
1 changed files with 16 additions and 2 deletions
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18
lib/slist.c
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@ -77,6 +77,7 @@ copy_chars(gray_slist_t slist, const char *str, size_t n)
return n;
}
/* Create new string list. */
gray_slist_t
gray_slist_create(void)
{
@ -88,18 +89,21 @@ gray_slist_create(void)
return slist;
}
/* Return error code associated with the string list */
int
gray_slist_err(gray_slist_t slist)
{
return slist->ec;
}
/* Clear error code associated with the string list */
void
gray_slist_clerr(gray_slist_t slist)
{
slist->ec = 0;
}
/* Clear content of the string list */
void
gray_slist_clear(gray_slist_t slist)
{
@ -111,7 +115,7 @@ gray_slist_clear(gray_slist_t slist)
gray_slist_clerr(slist);
}
/* Deallocate memory used by the string list. Store NULL in *SLIST */
void
gray_slist_free(gray_slist_t *slist)
{
@ -128,6 +132,8 @@ gray_slist_free(gray_slist_t *slist)
*slist = NULL;
}
/* Append N bytes from the string STR to the list. Return the number of
bytes actually stored. */
ssize_t
gray_slist_append(gray_slist_t slist, const char *str, size_t n)
{
@ -139,18 +145,20 @@ gray_slist_append(gray_slist_t slist, const char *str, size_t n)
while (total < n) {
ssize_t s = copy_chars(slist, str + total, n - total);
if (s == -1)
return -1;
break;
total += s;
}
return total;
}
/* Append one character to the list. Return 1 on success. */
ssize_t
gray_slist_append_char(gray_slist_t slist, char c)
{
return gray_slist_append(slist, &c, 1);
}
/* Return the total size of strings stored in the list. */
size_t
gray_slist_size(gray_slist_t slist)
{
@ -161,6 +169,8 @@ gray_slist_size(gray_slist_t slist)
return size;
}
/* Coalesce all segments in the list into a single contiguous string.
Return its length. */
ssize_t
gray_slist_coalesce(gray_slist_t slist)
{
@ -190,6 +200,7 @@ gray_slist_coalesce(gray_slist_t slist)
return size;
}
/* Return the pointer to the head of the list. */
void *
gray_slist_head(gray_slist_t slist, size_t *psize)
{
@ -198,6 +209,9 @@ gray_slist_head(gray_slist_t slist, size_t *psize)
return slist->head ? slist->head->buf : NULL;
}
/* Finish building the string list. Coalesce all segments, and clear the
unused memory. On success, return the pointer to the newly-built string.
On error (out of memory), return NULL and set error status in the SLIST. */
void *
gray_slist_finish(gray_slist_t slist)
{