* POSSIBILITY OF SUCH DAMAGE.
*/
-#define SDS_ABORT_ON_OOM
-
-#include "sds.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
+#include "sds.h"
+#ifdef SDS_ABORT_ON_OOM
static void sdsOomAbort(void) {
fprintf(stderr,"SDS: Out Of Memory (SDS_ABORT_ON_OOM defined)\n");
abort();
}
+#endif
sds sdsnewlen(const void *init, size_t initlen) {
struct sdshdr *sh;
return sdsnewlen(init, initlen);
}
-size_t sdslen(const sds s) {
- struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
- return sh->len;
-}
-
sds sdsdup(const sds s) {
return sdsnewlen(s, sdslen(s));
}
free(s-sizeof(struct sdshdr));
}
-size_t sdsavail(sds s) {
- struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
- return sh->free;
-}
-
void sdsupdatelen(sds s) {
struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
int reallen = strlen(s);
return newsh->buf;
}
+/* Grow the sds to have the specified length. Bytes that were not part of
+ * the original length of the sds will be set to zero. */
+sds sdsgrowzero(sds s, size_t len) {
+ struct sdshdr *sh = (void*)(s-(sizeof(struct sdshdr)));
+ size_t totlen, curlen = sh->len;
+
+ if (len <= curlen) return s;
+ s = sdsMakeRoomFor(s,len-curlen);
+ if (s == NULL) return NULL;
+
+ /* Make sure added region doesn't contain garbage */
+ sh = (void*)(s-(sizeof(struct sdshdr)));
+ memset(s+curlen,0,(len-curlen+1)); /* also set trailing \0 byte */
+ totlen = sh->len+sh->free;
+ sh->len = len;
+ sh->free = totlen-sh->len;
+ return s;
+}
+
sds sdscatlen(sds s, const void *t, size_t len) {
struct sdshdr *sh;
size_t curlen = sdslen(s);
}
newlen = (start > end) ? 0 : (end-start)+1;
if (newlen != 0) {
- if (start >= (signed)len) start = len-1;
- if (end >= (signed)len) end = len-1;
- newlen = (start > end) ? 0 : (end-start)+1;
+ if (start >= (signed)len) {
+ newlen = 0;
+ } else if (end >= (signed)len) {
+ end = len-1;
+ newlen = (start > end) ? 0 : (end-start)+1;
+ }
} else {
start = 0;
}
- if (start != 0) memmove(sh->buf, sh->buf+start, newlen);
+ if (start && newlen) memmove(sh->buf, sh->buf+start, newlen);
sh->buf[newlen] = 0;
sh->free = sh->free+(sh->len-newlen);
sh->len = newlen;
sds sdscatrepr(sds s, char *p, size_t len) {
s = sdscatlen(s,"\"",1);
+ if (s == NULL) return NULL;
+
while(len--) {
switch(*p) {
case '\\':
case '"':
s = sdscatprintf(s,"\\%c",*p);
break;
- case '\n': s = sdscatlen(s,"\\n",1); break;
- case '\r': s = sdscatlen(s,"\\r",1); break;
- case '\t': s = sdscatlen(s,"\\t",1); break;
- case '\a': s = sdscatlen(s,"\\a",1); break;
- case '\b': s = sdscatlen(s,"\\b",1); break;
+ case '\n': s = sdscatlen(s,"\\n",2); break;
+ case '\r': s = sdscatlen(s,"\\r",2); break;
+ case '\t': s = sdscatlen(s,"\\t",2); break;
+ case '\a': s = sdscatlen(s,"\\a",2); break;
+ case '\b': s = sdscatlen(s,"\\b",2); break;
default:
if (isprint(*p))
s = sdscatprintf(s,"%c",*p);
break;
}
p++;
+ if (s == NULL) return NULL;
}
return sdscatlen(s,"\"",1);
}
sds *sdssplitargs(char *line, int *argc) {
char *p = line;
char *current = NULL;
- char **vector = NULL;
+ char **vector = NULL, **_vector = NULL;
*argc = 0;
while(1) {
int inq=0; /* set to 1 if we are in "quotes" */
int done=0;
- if (current == NULL) current = sdsempty();
+ if (current == NULL) {
+ current = sdsempty();
+ if (current == NULL) goto err;
+ }
+
while(!done) {
if (inq) {
if (*p == '\\' && *(p+1)) {
}
}
if (*p) p++;
+ if (current == NULL) goto err;
}
/* add the token to the vector */
- vector = realloc(vector,((*argc)+1)*sizeof(char*));
+ _vector = realloc(vector,((*argc)+1)*sizeof(char*));
+ if (_vector == NULL) goto err;
+
+ vector = _vector;
vector[*argc] = current;
(*argc)++;
current = NULL;
err:
while((*argc)--)
sdsfree(vector[*argc]);
- free(vector);
- if (current) sdsfree(current);
+ if (vector != NULL) free(vector);
+ if (current != NULL) sdsfree(current);
return NULL;
}
+
+#ifdef SDS_TEST_MAIN
+#include <stdio.h>
+
+int __failed_tests = 0;
+int __test_num = 0;
+#define test_cond(descr,_c) do { \
+ __test_num++; printf("%d - %s: ", __test_num, descr); \
+ if(_c) printf("PASSED\n"); else {printf("FAILED\n"); __failed_tests++;} \
+} while(0);
+#define test_report() do { \
+ printf("%d tests, %d passed, %d failed\n", __test_num, \
+ __test_num-__failed_tests, __failed_tests); \
+ if (__failed_tests) { \
+ printf("=== WARNING === We have failed tests here...\n"); \
+ } \
+} while(0);
+
+int main(void) {
+ {
+ sds x = sdsnew("foo"), y;
+
+ test_cond("Create a string and obtain the length",
+ sdslen(x) == 3 && memcmp(x,"foo\0",4) == 0)
+
+ sdsfree(x);
+ x = sdsnewlen("foo",2);
+ test_cond("Create a string with specified length",
+ sdslen(x) == 2 && memcmp(x,"fo\0",3) == 0)
+
+ x = sdscat(x,"bar");
+ test_cond("Strings concatenation",
+ sdslen(x) == 5 && memcmp(x,"fobar\0",6) == 0);
+
+ x = sdscpy(x,"a");
+ test_cond("sdscpy() against an originally longer string",
+ sdslen(x) == 1 && memcmp(x,"a\0",2) == 0)
+
+ x = sdscpy(x,"xyzxxxxxxxxxxyyyyyyyyyykkkkkkkkkk");
+ test_cond("sdscpy() against an originally shorter string",
+ sdslen(x) == 33 &&
+ memcmp(x,"xyzxxxxxxxxxxyyyyyyyyyykkkkkkkkkk\0",33) == 0)
+
+ sdsfree(x);
+ x = sdscatprintf(sdsempty(),"%d",123);
+ test_cond("sdscatprintf() seems working in the base case",
+ sdslen(x) == 3 && memcmp(x,"123\0",4) ==0)
+
+ sdsfree(x);
+ x = sdstrim(sdsnew("xxciaoyyy"),"xy");
+ test_cond("sdstrim() correctly trims characters",
+ sdslen(x) == 4 && memcmp(x,"ciao\0",5) == 0)
+
+ y = sdsrange(sdsdup(x),1,1);
+ test_cond("sdsrange(...,1,1)",
+ sdslen(y) == 1 && memcmp(y,"i\0",2) == 0)
+
+ sdsfree(y);
+ y = sdsrange(sdsdup(x),1,-1);
+ test_cond("sdsrange(...,1,-1)",
+ sdslen(y) == 3 && memcmp(y,"iao\0",4) == 0)
+
+ sdsfree(y);
+ y = sdsrange(sdsdup(x),-2,-1);
+ test_cond("sdsrange(...,-2,-1)",
+ sdslen(y) == 2 && memcmp(y,"ao\0",3) == 0)
+
+ sdsfree(y);
+ y = sdsrange(sdsdup(x),2,1);
+ test_cond("sdsrange(...,2,1)",
+ sdslen(y) == 0 && memcmp(y,"\0",1) == 0)
+
+ sdsfree(y);
+ y = sdsrange(sdsdup(x),1,100);
+ test_cond("sdsrange(...,1,100)",
+ sdslen(y) == 3 && memcmp(y,"iao\0",4) == 0)
+
+ sdsfree(y);
+ y = sdsrange(sdsdup(x),100,100);
+ test_cond("sdsrange(...,100,100)",
+ sdslen(y) == 0 && memcmp(y,"\0",1) == 0)
+
+ sdsfree(y);
+ sdsfree(x);
+ x = sdsnew("foo");
+ y = sdsnew("foa");
+ test_cond("sdscmp(foo,foa)", sdscmp(x,y) > 0)
+
+ sdsfree(y);
+ sdsfree(x);
+ x = sdsnew("bar");
+ y = sdsnew("bar");
+ test_cond("sdscmp(bar,bar)", sdscmp(x,y) == 0)
+
+ sdsfree(y);
+ sdsfree(x);
+ x = sdsnew("aar");
+ y = sdsnew("bar");
+ test_cond("sdscmp(bar,bar)", sdscmp(x,y) < 0)
+ }
+ test_report()
+}
+#endif
projects / redis.git / blobdiff