/**
* prelude_string_get_string_released:
* @string: Pointer to a #prelude_string_t object.
* @outptr: Pointer to an address where to store the released string.
*
* Get @string content, and release it so that further operation on
* @string won't modify the returned content.
*
* Returns: 0 on success, or a negative value if an error occured.
*/
int prelude_string_get_string_released(prelude_string_t *string, char **outptr)
{
prelude_return_val_if_fail(string, prelude_error(PRELUDE_ERROR_ASSERTION));
*outptr = NULL;
if ( ! string->index )
return 0;
if ( ! (string->flags & PRELUDE_STRING_OWN_DATA) ) {
*outptr = strdup(string->data.robuf);
return (*outptr) ? 0 : prelude_error_from_errno(errno);
}
if ( string->index + 1 <= string->index )
return prelude_error(PRELUDE_ERROR_INVAL_LENGTH);
*outptr = _prelude_realloc(string->data.rwbuf, string->index + 1);
if ( ! *outptr )
return prelude_error_from_errno(errno);
string->size = 0;
string->index = 0;
string->data.rwbuf = NULL;
return 0;
}
static int op_delete_line(config_t *cfg, unsigned int start, unsigned int end)
{
unsigned int i, j;
if ( ! cfg->elements )
return 0;
if ( start >= end || end > cfg->elements )
return -1;
for ( i = start; i < end; i++ ) {
free(cfg->content[i]);
cfg->content[i] = NULL;
}
for ( i = end, j = start; i < cfg->elements; i++ )
cfg->content[j++] = cfg->content[i];
cfg->elements -= end - start;
cfg->content = _prelude_realloc(cfg->content, cfg->elements * sizeof(char **));
if ( ! cfg->content )
return prelude_error_from_errno(errno);
return 0;
}
static int allocate_more_chunk_if_needed(prelude_string_t *s, size_t needed_len)
{
int ret;
char *ptr;
size_t len;
if ( ! needed_len )
len = BUFFER_CHUNK_SIZE;
else
len = MAX(needed_len - (s->size - s->index), s->size * BUFFER_GROWTH_FACTOR);
if ( s->size + len < s->size )
return prelude_error(PRELUDE_ERROR_INVAL_LENGTH);
if ( s->flags & PRELUDE_STRING_OWN_DATA ) {
ptr = _prelude_realloc(s->data.rwbuf, s->size + len);
if ( ! ptr )
return prelude_error_from_errno(errno);
s->size += len;
s->data.rwbuf = ptr;
}
else {
ret = make_string_own(s, s->size + len);
if ( ret < 0 )
return ret;
}
return 0;
}
/*
* Appends a line to an array of line.
* Takes the address of the array and the line to append as arguments.
*
* list must be NULL the first time this function is called,
* in order to initialize indexing variable.
*/
static int op_append_line(config_t *cfg, char *line)
{
if ( ! line )
return 0;
if ( cfg->elements + 1 < cfg->elements )
return -1;
cfg->elements++;
cfg->content = _prelude_realloc(cfg->content, cfg->elements * sizeof(char **));
if ( ! cfg->content )
return prelude_error_from_errno(errno);
cfg->content[cfg->elements - 1] = line;
return 0;
}
static int op_insert_line(config_t *cfg, char *line, unsigned int lins)
{
unsigned int i;
if ( lins > cfg->elements || ! line )
return -1;
if ( cfg->elements + 1 < cfg->elements )
return -1;
cfg->content = _prelude_realloc(cfg->content, ++cfg->elements * sizeof(char **));
if ( ! cfg->content )
return prelude_error_from_errno(errno);
for ( i = cfg->elements - 2; i >= lins; i-- ) {
cfg->content[i + 1] = cfg->content[i];
if ( i == 0 )
break;
}
cfg->content[lins] = line;
return 0;
}
