* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
- *
- * History:
- *
- * - 22 March 2011: History section created on top of sds.c
- * - 22 March 2011: Fixed a problem with "\xab" escapes convertion in
- * function sdssplitargs().
*/
-#define SDS_ABORT_ON_OOM
-
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "sds.h"
#include "zmalloc.h"
-static void sdsOomAbort(void) {
- fprintf(stderr,"SDS: Out Of Memory (SDS_ABORT_ON_OOM defined)\n");
- abort();
-}
-
sds sdsnewlen(const void *init, size_t initlen) {
struct sdshdr *sh;
} else {
sh = zcalloc(sizeof(struct sdshdr)+initlen+1);
}
-#ifdef SDS_ABORT_ON_OOM
- if (sh == NULL) sdsOomAbort();
-#else
if (sh == NULL) return NULL;
-#endif
sh->len = initlen;
sh->free = 0;
if (initlen && init)
if (free >= addlen) return s;
len = sdslen(s);
sh = (void*) (s-(sizeof(struct sdshdr)));
- newlen = (len+addlen)*2;
+ newlen = (len+addlen);
+ if (newlen < SDS_MAX_PREALLOC)
+ newlen *= 2;
+ else
+ newlen += SDS_MAX_PREALLOC;
newsh = zrealloc(sh, sizeof(struct sdshdr)+newlen+1);
-#ifdef SDS_ABORT_ON_OOM
- if (newsh == NULL) sdsOomAbort();
-#else
if (newsh == NULL) return NULL;
-#endif
newsh->free = newlen - len;
return newsh->buf;
}
+/* Reallocate the sds string so that it has no free space at the end. The
+ * contained string remains not altered, but next concatenation operations
+ * will require a reallocation. */
+sds sdsRemoveFreeSpace(sds s) {
+ struct sdshdr *sh;
+
+ sh = (void*) (s-(sizeof(struct sdshdr)));
+ sh = zrealloc(sh, sizeof(struct sdshdr)+sh->len+1);
+ sh->free = 0;
+ return sh->buf;
+}
+
+size_t sdsAllocSize(sds s) {
+ struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
+
+ return sizeof(*sh)+sh->len+sh->free+1;
+}
+
/* Increment the sds length and decrements the left free space at the
* end of the string accordingly to 'incr'. Also set the null term
* in the new end of the string.
return s;
}
-sds sdscatlen(sds s, void *t, size_t len) {
+sds sdscatlen(sds s, const void *t, size_t len) {
struct sdshdr *sh;
size_t curlen = sdslen(s);
return s;
}
-sds sdscat(sds s, char *t) {
+sds sdscat(sds s, const char *t) {
return sdscatlen(s, t, strlen(t));
}
-sds sdscatsds(sds s, sds t) {
+sds sdscatsds(sds s, const sds t) {
return sdscatlen(s, t, sdslen(t));
}
-sds sdscpylen(sds s, char *t, size_t len) {
+sds sdscpylen(sds s, const char *t, size_t len) {
struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
size_t totlen = sh->free+sh->len;
return s;
}
-sds sdscpy(sds s, char *t) {
+sds sdscpy(sds s, const char *t) {
return sdscpylen(s, t, strlen(t));
}
while(1) {
buf = zmalloc(buflen);
-#ifdef SDS_ABORT_ON_OOM
- if (buf == NULL) sdsOomAbort();
-#else
if (buf == NULL) return NULL;
-#endif
buf[buflen-2] = '\0';
va_copy(cpy,ap);
vsnprintf(buf, buflen, fmt, cpy);
for (j = 0; j < len; j++) s[j] = toupper(s[j]);
}
-int sdscmp(sds s1, sds s2) {
+int sdscmp(const sds s1, const sds s2) {
size_t l1, l2, minlen;
int cmp;
* requires length arguments. sdssplit() is just the
* same function but for zero-terminated strings.
*/
-sds *sdssplitlen(char *s, int len, char *sep, int seplen, int *count) {
+sds *sdssplitlen(const char *s, int len, const char *sep, int seplen, int *count) {
int elements = 0, slots = 5, start = 0, j;
sds *tokens;
if (seplen < 1 || len < 0) return NULL;
tokens = zmalloc(sizeof(sds)*slots);
-#ifdef SDS_ABORT_ON_OOM
- if (tokens == NULL) sdsOomAbort();
-#else
if (tokens == NULL) return NULL;
-#endif
if (len == 0) {
*count = 0;
slots *= 2;
newtokens = zrealloc(tokens,sizeof(sds)*slots);
- if (newtokens == NULL) {
-#ifdef SDS_ABORT_ON_OOM
- sdsOomAbort();
-#else
- goto cleanup;
-#endif
- }
+ if (newtokens == NULL) goto cleanup;
tokens = newtokens;
}
/* search the separator */
if ((seplen == 1 && *(s+j) == sep[0]) || (memcmp(s+j,sep,seplen) == 0)) {
tokens[elements] = sdsnewlen(s+start,j-start);
- if (tokens[elements] == NULL) {
-#ifdef SDS_ABORT_ON_OOM
- sdsOomAbort();
-#else
- goto cleanup;
-#endif
- }
+ if (tokens[elements] == NULL) goto cleanup;
elements++;
start = j+seplen;
j = j+seplen-1; /* skip the separator */
}
/* Add the final element. We are sure there is room in the tokens array. */
tokens[elements] = sdsnewlen(s+start,len-start);
- if (tokens[elements] == NULL) {
-#ifdef SDS_ABORT_ON_OOM
- sdsOomAbort();
-#else
- goto cleanup;
-#endif
- }
+ if (tokens[elements] == NULL) goto cleanup;
elements++;
*count = elements;
return tokens;
-#ifndef SDS_ABORT_ON_OOM
cleanup:
{
int i;
*count = 0;
return NULL;
}
-#endif
}
void sdsfreesplitres(sds *tokens, int count) {
return sdsnewlen(p,32-(p-buf));
}
-sds sdscatrepr(sds s, char *p, size_t len) {
+sds sdscatrepr(sds s, const char *p, size_t len) {
s = sdscatlen(s,"\"",1);
while(len--) {
switch(*p) {
* Note that sdscatrepr() is able to convert back a string into
* a quoted string in the same format sdssplitargs() is able to parse.
*/
-sds *sdssplitargs(char *line, int *argc) {
- char *p = line;
+sds *sdssplitargs(const char *line, int *argc) {
+ const char *p = line;
char *current = NULL;
char **vector = NULL;
*
* The function returns the sds string pointer, that is always the same
* as the input pointer since no resize is needed. */
-sds sdsmapchars(sds s, char *from, char *to, size_t setlen) {
+sds sdsmapchars(sds s, const char *from, const char *to, size_t setlen) {
size_t j, i, l = sdslen(s);
for (j = 0; j < l; j++) {
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