Added user descr. Added string lib from some nice guy

1 files changed, 101 insertions, 0 deletions

diff --git a/sds.h b/sds.h
new file mode 100644
index 0000000..d52de56
--- /dev/null
+++ b/sds.h
@@ -0,0 +1,101 @@
+/* SDS (Simple Dynamic Strings), A C dynamic strings library.
+ *
+ * Copyright (c) 2006-2014, Salvatore Sanfilippo <antirez at gmail dot com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of Redis nor the names of its contributors may be used
+ *     to endorse or promote products derived from this software without
+ *     specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * 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.
+ */
+
+#ifndef __MICROBBS__SDS_H
+#define __MICROBBS__SDS_H
+
+#define SDS_MAX_PREALLOC (1024*1024)
+
+#include <sys/types.h>
+#include <stdarg.h>
+
+typedef char *sds;
+
+struct sdshdr {
+    int len;
+    int free;
+    char buf[];
+};
+
+static inline size_t sds_len(const sds s) {
+    struct sdshdr *sh = (void*)(s-sizeof *sh);
+    return sh->len;
+}
+
+static inline size_t sds_avail(const sds s) {
+    struct sdshdr *sh = (void*)(s-sizeof *sh);
+    return sh->free;
+}
+
+sds sds_newlen(const void *init, size_t initlen);
+sds sds_new(const char *init);
+sds sds_empty(void);
+size_t sds_len(const sds s);
+sds sds_dup(const sds s);
+void sds_free(sds s);
+size_t sds_avail(const sds s);
+sds sds_growzero(sds s, size_t len);
+sds sds_catlen(sds s, const void *t, size_t len);
+sds sds_cat(sds s, const char *t);
+sds sds_catsds(sds s, const sds t);
+sds sds_cpylen(sds s, const char *t, size_t len);
+sds sds_cpy(sds s, const char *t);
+
+sds sds_catvprintf(sds s, const char *fmt, va_list ap);
+#ifdef __GNUC__
+sds sds_catprintf(sds s, const char *fmt, ...)
+    __attribute__((format(printf, 2, 3)));
+#else
+sds sds_catprintf(sds s, const char *fmt, ...);
+#endif
+
+void sds_trim(sds s, const char *cset);
+void sds_range(sds s, int start, int end);
+void sds_updatelen(sds s);
+void sds_clear(sds s);
+int sds_cmp(const sds s1, const sds s2);
+sds *sds_splitlen(const char *s, int len, const char *sep, int seplen, int *count);
+void sds_freesplitres(sds *tokens, int count);
+void sds_tolower(sds s);
+void sds_toupper(sds s);
+sds sds_fromlonglong(long long value);
+sds sds_catrepr(sds s, const char *p, size_t len);
+sds *sds_splitargs(const char *line, int *argc);
+sds sds_mapchars(sds s, const char *from, const char *to, size_t setlen);
+sds sds_join(char **argv, int argc, char *sep, size_t seplen);
+sds sds_joinsds(sds *argv, int argc, const char *sep, size_t seplen);
+
+/* Low level functions exposed to the user API */
+sds sds_make_room_for(sds s, size_t addlen);
+void sds_incr_len(sds s, int incr);
+sds sds_remove_free_space(sds s);
+size_t sds_alloc_size(sds s);
+
+#endif