mirror of
https://github.com/fluencelabs/redis
synced 2025-03-18 16:40:50 +00:00
deps/hiredis SDS updated to version 2.0.0.
This commit is contained in:
parent
c6333def13
commit
b684e2dad1
426
deps/hiredis/sds.c
vendored
426
deps/hiredis/sds.c
vendored
@ -1,6 +1,8 @@
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/* SDSLib, A C dynamic strings library
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/* SDSLib 2.0 -- A C dynamic strings library
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*
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* Copyright (c) 2006-2012, Salvatore Sanfilippo <antirez at gmail dot com>
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* Copyright (c) 2006-2015, Salvatore Sanfilippo <antirez at gmail dot com>
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* Copyright (c) 2015, Oran Agra
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* Copyright (c) 2015, Redis Labs, Inc
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -34,7 +36,35 @@
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#include <ctype.h>
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#include <assert.h>
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#include "sds.h"
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#include "zmalloc.h"
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#include "sdsalloc.h"
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static inline int sdsHdrSize(char type) {
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switch(type&SDS_TYPE_MASK) {
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case SDS_TYPE_5:
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return sizeof(struct sdshdr5);
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case SDS_TYPE_8:
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return sizeof(struct sdshdr8);
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case SDS_TYPE_16:
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return sizeof(struct sdshdr16);
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case SDS_TYPE_32:
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return sizeof(struct sdshdr32);
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case SDS_TYPE_64:
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return sizeof(struct sdshdr64);
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}
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return 0;
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}
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static inline char sdsReqType(size_t string_size) {
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if (string_size < 32)
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return SDS_TYPE_5;
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if (string_size < 0xff)
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return SDS_TYPE_8;
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if (string_size < 0xffff)
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return SDS_TYPE_16;
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if (string_size < 0xffffffff)
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return SDS_TYPE_32;
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return SDS_TYPE_64;
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}
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/* Create a new sds string with the content specified by the 'init' pointer
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* and 'initlen'.
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@ -43,26 +73,65 @@
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* The string is always null-termined (all the sds strings are, always) so
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* even if you create an sds string with:
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*
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* mystring = sdsnewlen("abc",3");
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* mystring = sdsnewlen("abc",3);
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*
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* You can print the string with printf() as there is an implicit \0 at the
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* end of the string. However the string is binary safe and can contain
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* \0 characters in the middle, as the length is stored in the sds header. */
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sds sdsnewlen(const void *init, size_t initlen) {
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struct sdshdr *sh;
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void *sh;
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sds s;
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char type = sdsReqType(initlen);
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/* Empty strings are usually created in order to append. Use type 8
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* since type 5 is not good at this. */
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if (type == SDS_TYPE_5 && initlen == 0) type = SDS_TYPE_8;
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int hdrlen = sdsHdrSize(type);
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unsigned char *fp; /* flags pointer. */
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if (init) {
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sh = zmalloc(sizeof(struct sdshdr)+initlen+1);
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} else {
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sh = zcalloc(sizeof(struct sdshdr)+initlen+1);
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}
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sh = s_malloc(hdrlen+initlen+1);
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if (!init)
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memset(sh, 0, hdrlen+initlen+1);
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if (sh == NULL) return NULL;
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sh->len = initlen;
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sh->free = 0;
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s = (char*)sh+hdrlen;
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fp = ((unsigned char*)s)-1;
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switch(type) {
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case SDS_TYPE_5: {
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*fp = type | (initlen << SDS_TYPE_BITS);
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break;
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}
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case SDS_TYPE_8: {
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SDS_HDR_VAR(8,s);
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sh->len = initlen;
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sh->alloc = initlen;
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*fp = type;
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break;
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}
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case SDS_TYPE_16: {
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SDS_HDR_VAR(16,s);
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sh->len = initlen;
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sh->alloc = initlen;
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*fp = type;
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break;
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}
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case SDS_TYPE_32: {
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SDS_HDR_VAR(32,s);
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sh->len = initlen;
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sh->alloc = initlen;
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*fp = type;
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break;
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}
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case SDS_TYPE_64: {
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SDS_HDR_VAR(64,s);
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sh->len = initlen;
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sh->alloc = initlen;
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*fp = type;
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break;
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}
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}
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if (initlen && init)
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memcpy(sh->buf, init, initlen);
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sh->buf[initlen] = '\0';
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return (char*)sh->buf;
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memcpy(s, init, initlen);
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s[initlen] = '\0';
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return s;
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}
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/* Create an empty (zero length) sds string. Even in this case the string
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@ -71,7 +140,7 @@ sds sdsempty(void) {
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return sdsnewlen("",0);
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}
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/* Create a new sds string starting from a null termined C string. */
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/* Create a new sds string starting from a null terminated C string. */
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sds sdsnew(const char *init) {
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size_t initlen = (init == NULL) ? 0 : strlen(init);
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return sdsnewlen(init, initlen);
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@ -85,7 +154,7 @@ sds sdsdup(const sds s) {
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/* Free an sds string. No operation is performed if 's' is NULL. */
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void sdsfree(sds s) {
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if (s == NULL) return;
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zfree(s-sizeof(struct sdshdr));
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s_free((char*)s-sdsHdrSize(s[-1]));
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}
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/* Set the sds string length to the length as obtained with strlen(), so
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@ -103,21 +172,17 @@ void sdsfree(sds s) {
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* the output will be "6" as the string was modified but the logical length
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* remains 6 bytes. */
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void sdsupdatelen(sds s) {
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struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
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int reallen = strlen(s);
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sh->free += (sh->len-reallen);
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sh->len = reallen;
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sdssetlen(s, reallen);
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}
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/* Modify an sds string on-place to make it empty (zero length).
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/* Modify an sds string in-place to make it empty (zero length).
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* However all the existing buffer is not discarded but set as free space
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* so that next append operations will not require allocations up to the
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* number of bytes previously available. */
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void sdsclear(sds s) {
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struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
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sh->free += sh->len;
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sh->len = 0;
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sh->buf[0] = '\0';
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sdssetlen(s, 0);
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s[0] = '\0';
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}
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/* Enlarge the free space at the end of the sds string so that the caller
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@ -127,23 +192,48 @@ void sdsclear(sds s) {
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* Note: this does not change the *length* of the sds string as returned
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* by sdslen(), but only the free buffer space we have. */
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sds sdsMakeRoomFor(sds s, size_t addlen) {
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struct sdshdr *sh, *newsh;
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size_t free = sdsavail(s);
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void *sh, *newsh;
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size_t avail = sdsavail(s);
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size_t len, newlen;
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char type, oldtype = s[-1] & SDS_TYPE_MASK;
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int hdrlen;
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/* Return ASAP if there is enough space left. */
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if (avail >= addlen) return s;
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if (free >= addlen) return s;
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len = sdslen(s);
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sh = (void*) (s-(sizeof(struct sdshdr)));
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sh = (char*)s-sdsHdrSize(oldtype);
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newlen = (len+addlen);
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if (newlen < SDS_MAX_PREALLOC)
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newlen *= 2;
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else
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newlen += SDS_MAX_PREALLOC;
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newsh = zrealloc(sh, sizeof(struct sdshdr)+newlen+1);
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if (newsh == NULL) return NULL;
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newsh->free = newlen - len;
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return newsh->buf;
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type = sdsReqType(newlen);
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/* Don't use type 5: the user is appending to the string and type 5 is
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* not able to remember empty space, so sdsMakeRoomFor() must be called
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* at every appending operation. */
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if (type == SDS_TYPE_5) type = SDS_TYPE_8;
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hdrlen = sdsHdrSize(type);
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if (oldtype==type) {
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newsh = s_realloc(sh, hdrlen+newlen+1);
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if (newsh == NULL) return NULL;
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s = (char*)newsh+hdrlen;
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} else {
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/* Since the header size changes, need to move the string forward,
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* and can't use realloc */
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newsh = s_malloc(hdrlen+newlen+1);
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if (newsh == NULL) return NULL;
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memcpy((char*)newsh+hdrlen, s, len+1);
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s_free(sh);
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s = (char*)newsh+hdrlen;
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s[-1] = type;
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sdssetlen(s, len);
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}
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sdssetalloc(s, newlen);
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return s;
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}
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/* Reallocate the sds string so that it has no free space at the end. The
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@ -153,12 +243,29 @@ sds sdsMakeRoomFor(sds s, size_t addlen) {
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* After the call, the passed sds string is no longer valid and all the
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* references must be substituted with the new pointer returned by the call. */
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sds sdsRemoveFreeSpace(sds s) {
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struct sdshdr *sh;
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void *sh, *newsh;
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char type, oldtype = s[-1] & SDS_TYPE_MASK;
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int hdrlen;
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size_t len = sdslen(s);
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sh = (char*)s-sdsHdrSize(oldtype);
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sh = (void*) (s-(sizeof(struct sdshdr)));
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sh = zrealloc(sh, sizeof(struct sdshdr)+sh->len+1);
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sh->free = 0;
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return sh->buf;
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type = sdsReqType(len);
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hdrlen = sdsHdrSize(type);
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if (oldtype==type) {
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newsh = s_realloc(sh, hdrlen+len+1);
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if (newsh == NULL) return NULL;
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s = (char*)newsh+hdrlen;
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} else {
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newsh = s_malloc(hdrlen+len+1);
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if (newsh == NULL) return NULL;
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memcpy((char*)newsh+hdrlen, s, len+1);
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s_free(sh);
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s = (char*)newsh+hdrlen;
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s[-1] = type;
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sdssetlen(s, len);
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}
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sdssetalloc(s, len);
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return s;
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}
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/* Return the total size of the allocation of the specifed sds string,
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@ -169,9 +276,14 @@ sds sdsRemoveFreeSpace(sds s) {
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* 4) The implicit null term.
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*/
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size_t sdsAllocSize(sds s) {
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struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
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size_t alloc = sdsalloc(s);
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return sdsHdrSize(s[-1])+alloc+1;
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}
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return sizeof(*sh)+sh->len+sh->free+1;
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/* Return the pointer of the actual SDS allocation (normally SDS strings
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* are referenced by the start of the string buffer). */
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void *sdsAllocPtr(sds s) {
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return (void*) (s-sdsHdrSize(s[-1]));
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}
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/* Increment the sds length and decrements the left free space at the
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@ -198,15 +310,44 @@ size_t sdsAllocSize(sds s) {
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* sdsIncrLen(s, nread);
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*/
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void sdsIncrLen(sds s, int incr) {
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struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
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if (incr >= 0)
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assert(sh->free >= (unsigned int)incr);
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else
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assert(sh->len >= (unsigned int)(-incr));
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sh->len += incr;
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sh->free -= incr;
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s[sh->len] = '\0';
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unsigned char flags = s[-1];
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size_t len;
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switch(flags&SDS_TYPE_MASK) {
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case SDS_TYPE_5: {
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unsigned char *fp = ((unsigned char*)s)-1;
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unsigned char oldlen = SDS_TYPE_5_LEN(flags);
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assert((incr > 0 && oldlen+incr < 32) || (incr < 0 && oldlen >= (unsigned int)(-incr)));
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*fp = SDS_TYPE_5 | ((oldlen+incr) << SDS_TYPE_BITS);
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len = oldlen+incr;
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break;
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}
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case SDS_TYPE_8: {
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SDS_HDR_VAR(8,s);
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assert((incr >= 0 && sh->alloc-sh->len >= incr) || (incr < 0 && sh->len >= (unsigned int)(-incr)));
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len = (sh->len += incr);
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break;
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}
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case SDS_TYPE_16: {
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SDS_HDR_VAR(16,s);
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assert((incr >= 0 && sh->alloc-sh->len >= incr) || (incr < 0 && sh->len >= (unsigned int)(-incr)));
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len = (sh->len += incr);
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break;
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}
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case SDS_TYPE_32: {
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SDS_HDR_VAR(32,s);
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assert((incr >= 0 && sh->alloc-sh->len >= (unsigned int)incr) || (incr < 0 && sh->len >= (unsigned int)(-incr)));
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len = (sh->len += incr);
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break;
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}
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case SDS_TYPE_64: {
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SDS_HDR_VAR(64,s);
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assert((incr >= 0 && sh->alloc-sh->len >= (uint64_t)incr) || (incr < 0 && sh->len >= (uint64_t)(-incr)));
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len = (sh->len += incr);
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break;
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}
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default: len = 0; /* Just to avoid compilation warnings. */
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}
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s[len] = '\0';
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}
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/* Grow the sds to have the specified length. Bytes that were not part of
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@ -215,19 +356,15 @@ void sdsIncrLen(sds s, int incr) {
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* if the specified length is smaller than the current length, no operation
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* is performed. */
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sds sdsgrowzero(sds s, size_t len) {
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struct sdshdr *sh = (void*)(s-(sizeof(struct sdshdr)));
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size_t totlen, curlen = sh->len;
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size_t curlen = sdslen(s);
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if (len <= curlen) return s;
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s = sdsMakeRoomFor(s,len-curlen);
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if (s == NULL) return NULL;
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/* Make sure added region doesn't contain garbage */
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sh = (void*)(s-(sizeof(struct sdshdr)));
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memset(s+curlen,0,(len-curlen+1)); /* also set trailing \0 byte */
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totlen = sh->len+sh->free;
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sh->len = len;
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sh->free = totlen-sh->len;
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sdssetlen(s, len);
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return s;
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}
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@ -237,15 +374,12 @@ sds sdsgrowzero(sds s, size_t len) {
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* After the call, the passed sds string is no longer valid and all the
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* references must be substituted with the new pointer returned by the call. */
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sds sdscatlen(sds s, const void *t, size_t len) {
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struct sdshdr *sh;
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size_t curlen = sdslen(s);
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s = sdsMakeRoomFor(s,len);
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if (s == NULL) return NULL;
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sh = (void*) (s-(sizeof(struct sdshdr)));
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memcpy(s+curlen, t, len);
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sh->len = curlen+len;
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sh->free = sh->free-len;
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sdssetlen(s, curlen+len);
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s[curlen+len] = '\0';
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return s;
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}
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@ -269,19 +403,13 @@ sds sdscatsds(sds s, const sds t) {
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/* Destructively modify the sds string 's' to hold the specified binary
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* safe string pointed by 't' of length 'len' bytes. */
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sds sdscpylen(sds s, const char *t, size_t len) {
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struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
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size_t totlen = sh->free+sh->len;
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if (totlen < len) {
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s = sdsMakeRoomFor(s,len-sh->len);
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if (sdsalloc(s) < len) {
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s = sdsMakeRoomFor(s,len-sdslen(s));
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if (s == NULL) return NULL;
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sh = (void*) (s-(sizeof(struct sdshdr)));
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totlen = sh->free+sh->len;
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}
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memcpy(s, t, len);
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s[len] = '\0';
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sh->len = len;
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sh->free = totlen-len;
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sdssetlen(s, len);
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return s;
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}
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@ -295,7 +423,7 @@ sds sdscpy(sds s, const char *t) {
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* conversion. 's' must point to a string with room for at least
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* SDS_LLSTR_SIZE bytes.
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*
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* The function returns the lenght of the null-terminated string
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* The function returns the length of the null-terminated string
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* representation stored at 's'. */
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#define SDS_LLSTR_SIZE 21
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int sdsll2str(char *s, long long value) {
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@ -369,7 +497,7 @@ sds sdsfromlonglong(long long value) {
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return sdsnewlen(buf,len);
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}
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/* Like sdscatpritf() but gets va_list instead of being variadic. */
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/* Like sdscatprintf() but gets va_list instead of being variadic. */
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sds sdscatvprintf(sds s, const char *fmt, va_list ap) {
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va_list cpy;
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char staticbuf[1024], *buf = staticbuf, *t;
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@ -378,7 +506,7 @@ sds sdscatvprintf(sds s, const char *fmt, va_list ap) {
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/* We try to start using a static buffer for speed.
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* If not possible we revert to heap allocation. */
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if (buflen > sizeof(staticbuf)) {
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buf = zmalloc(buflen);
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buf = s_malloc(buflen);
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if (buf == NULL) return NULL;
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} else {
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buflen = sizeof(staticbuf);
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@ -390,11 +518,11 @@ sds sdscatvprintf(sds s, const char *fmt, va_list ap) {
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buf[buflen-2] = '\0';
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va_copy(cpy,ap);
|
||||
vsnprintf(buf, buflen, fmt, cpy);
|
||||
va_end(ap);
|
||||
va_end(cpy);
|
||||
if (buf[buflen-2] != '\0') {
|
||||
if (buf != staticbuf) zfree(buf);
|
||||
if (buf != staticbuf) s_free(buf);
|
||||
buflen *= 2;
|
||||
buf = zmalloc(buflen);
|
||||
buf = s_malloc(buflen);
|
||||
if (buf == NULL) return NULL;
|
||||
continue;
|
||||
}
|
||||
@ -403,7 +531,7 @@ sds sdscatvprintf(sds s, const char *fmt, va_list ap) {
|
||||
|
||||
/* Finally concat the obtained string to the SDS string and return it. */
|
||||
t = sdscat(s, buf);
|
||||
if (buf != staticbuf) zfree(buf);
|
||||
if (buf != staticbuf) s_free(buf);
|
||||
return t;
|
||||
}
|
||||
|
||||
@ -415,7 +543,7 @@ sds sdscatvprintf(sds s, const char *fmt, va_list ap) {
|
||||
*
|
||||
* Example:
|
||||
*
|
||||
* s = sdsempty("Sum is: ");
|
||||
* s = sdsnew("Sum is: ");
|
||||
* s = sdscatprintf(s,"%d+%d = %d",a,b,a+b).
|
||||
*
|
||||
* Often you need to create a string from scratch with the printf-alike
|
||||
@ -449,7 +577,6 @@ sds sdscatprintf(sds s, const char *fmt, ...) {
|
||||
* %% - Verbatim "%" character.
|
||||
*/
|
||||
sds sdscatfmt(sds s, char const *fmt, ...) {
|
||||
struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
|
||||
size_t initlen = sdslen(s);
|
||||
const char *f = fmt;
|
||||
int i;
|
||||
@ -460,14 +587,13 @@ sds sdscatfmt(sds s, char const *fmt, ...) {
|
||||
i = initlen; /* Position of the next byte to write to dest str. */
|
||||
while(*f) {
|
||||
char next, *str;
|
||||
unsigned int l;
|
||||
size_t l;
|
||||
long long num;
|
||||
unsigned long long unum;
|
||||
|
||||
/* Make sure there is always space for at least 1 char. */
|
||||
if (sh->free == 0) {
|
||||
if (sdsavail(s)==0) {
|
||||
s = sdsMakeRoomFor(s,1);
|
||||
sh = (void*) (s-(sizeof(struct sdshdr)));
|
||||
}
|
||||
|
||||
switch(*f) {
|
||||
@ -479,13 +605,11 @@ sds sdscatfmt(sds s, char const *fmt, ...) {
|
||||
case 'S':
|
||||
str = va_arg(ap,char*);
|
||||
l = (next == 's') ? strlen(str) : sdslen(str);
|
||||
if (sh->free < l) {
|
||||
if (sdsavail(s) < l) {
|
||||
s = sdsMakeRoomFor(s,l);
|
||||
sh = (void*) (s-(sizeof(struct sdshdr)));
|
||||
}
|
||||
memcpy(s+i,str,l);
|
||||
sh->len += l;
|
||||
sh->free -= l;
|
||||
sdsinclen(s,l);
|
||||
i += l;
|
||||
break;
|
||||
case 'i':
|
||||
@ -497,13 +621,11 @@ sds sdscatfmt(sds s, char const *fmt, ...) {
|
||||
{
|
||||
char buf[SDS_LLSTR_SIZE];
|
||||
l = sdsll2str(buf,num);
|
||||
if (sh->free < l) {
|
||||
if (sdsavail(s) < l) {
|
||||
s = sdsMakeRoomFor(s,l);
|
||||
sh = (void*) (s-(sizeof(struct sdshdr)));
|
||||
}
|
||||
memcpy(s+i,buf,l);
|
||||
sh->len += l;
|
||||
sh->free -= l;
|
||||
sdsinclen(s,l);
|
||||
i += l;
|
||||
}
|
||||
break;
|
||||
@ -516,27 +638,23 @@ sds sdscatfmt(sds s, char const *fmt, ...) {
|
||||
{
|
||||
char buf[SDS_LLSTR_SIZE];
|
||||
l = sdsull2str(buf,unum);
|
||||
if (sh->free < l) {
|
||||
if (sdsavail(s) < l) {
|
||||
s = sdsMakeRoomFor(s,l);
|
||||
sh = (void*) (s-(sizeof(struct sdshdr)));
|
||||
}
|
||||
memcpy(s+i,buf,l);
|
||||
sh->len += l;
|
||||
sh->free -= l;
|
||||
sdsinclen(s,l);
|
||||
i += l;
|
||||
}
|
||||
break;
|
||||
default: /* Handle %% and generally %<unknown>. */
|
||||
s[i++] = next;
|
||||
sh->len += 1;
|
||||
sh->free -= 1;
|
||||
sdsinclen(s,1);
|
||||
break;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
s[i++] = *f;
|
||||
sh->len += 1;
|
||||
sh->free -= 1;
|
||||
sdsinclen(s,1);
|
||||
break;
|
||||
}
|
||||
f++;
|
||||
@ -557,25 +675,23 @@ sds sdscatfmt(sds s, char const *fmt, ...) {
|
||||
* Example:
|
||||
*
|
||||
* s = sdsnew("AA...AA.a.aa.aHelloWorld :::");
|
||||
* s = sdstrim(s,"A. :");
|
||||
* s = sdstrim(s,"Aa. :");
|
||||
* printf("%s\n", s);
|
||||
*
|
||||
* Output will be just "Hello World".
|
||||
*/
|
||||
sds sdstrim(sds s, const char *cset) {
|
||||
struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
|
||||
char *start, *end, *sp, *ep;
|
||||
size_t len;
|
||||
|
||||
sp = start = s;
|
||||
ep = end = s+sdslen(s)-1;
|
||||
while(sp <= end && strchr(cset, *sp)) sp++;
|
||||
while(ep > start && strchr(cset, *ep)) ep--;
|
||||
while(ep > sp && strchr(cset, *ep)) ep--;
|
||||
len = (sp > ep) ? 0 : ((ep-sp)+1);
|
||||
if (sh->buf != sp) memmove(sh->buf, sp, len);
|
||||
sh->buf[len] = '\0';
|
||||
sh->free = sh->free+(sh->len-len);
|
||||
sh->len = len;
|
||||
if (s != sp) memmove(s, sp, len);
|
||||
s[len] = '\0';
|
||||
sdssetlen(s,len);
|
||||
return s;
|
||||
}
|
||||
|
||||
@ -596,7 +712,6 @@ sds sdstrim(sds s, const char *cset) {
|
||||
* sdsrange(s,1,-1); => "ello World"
|
||||
*/
|
||||
void sdsrange(sds s, int start, int end) {
|
||||
struct sdshdr *sh = (void*) (s-(sizeof(struct sdshdr)));
|
||||
size_t newlen, len = sdslen(s);
|
||||
|
||||
if (len == 0) return;
|
||||
@ -619,10 +734,9 @@ void sdsrange(sds s, int start, int end) {
|
||||
} else {
|
||||
start = 0;
|
||||
}
|
||||
if (start && newlen) memmove(sh->buf, sh->buf+start, newlen);
|
||||
sh->buf[newlen] = 0;
|
||||
sh->free = sh->free+(sh->len-newlen);
|
||||
sh->len = newlen;
|
||||
if (start && newlen) memmove(s, s+start, newlen);
|
||||
s[newlen] = 0;
|
||||
sdssetlen(s,newlen);
|
||||
}
|
||||
|
||||
/* Apply tolower() to every character of the sds string 's'. */
|
||||
@ -643,8 +757,8 @@ void sdstoupper(sds s) {
|
||||
*
|
||||
* Return value:
|
||||
*
|
||||
* 1 if s1 > s2.
|
||||
* -1 if s1 < s2.
|
||||
* positive if s1 > s2.
|
||||
* negative if s1 < s2.
|
||||
* 0 if s1 and s2 are exactly the same binary string.
|
||||
*
|
||||
* If two strings share exactly the same prefix, but one of the two has
|
||||
@ -684,7 +798,7 @@ sds *sdssplitlen(const char *s, int len, const char *sep, int seplen, int *count
|
||||
|
||||
if (seplen < 1 || len < 0) return NULL;
|
||||
|
||||
tokens = zmalloc(sizeof(sds)*slots);
|
||||
tokens = s_malloc(sizeof(sds)*slots);
|
||||
if (tokens == NULL) return NULL;
|
||||
|
||||
if (len == 0) {
|
||||
@ -697,7 +811,7 @@ sds *sdssplitlen(const char *s, int len, const char *sep, int seplen, int *count
|
||||
sds *newtokens;
|
||||
|
||||
slots *= 2;
|
||||
newtokens = zrealloc(tokens,sizeof(sds)*slots);
|
||||
newtokens = s_realloc(tokens,sizeof(sds)*slots);
|
||||
if (newtokens == NULL) goto cleanup;
|
||||
tokens = newtokens;
|
||||
}
|
||||
@ -721,7 +835,7 @@ cleanup:
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < elements; i++) sdsfree(tokens[i]);
|
||||
zfree(tokens);
|
||||
s_free(tokens);
|
||||
*count = 0;
|
||||
return NULL;
|
||||
}
|
||||
@ -732,7 +846,7 @@ void sdsfreesplitres(sds *tokens, int count) {
|
||||
if (!tokens) return;
|
||||
while(count--)
|
||||
sdsfree(tokens[count]);
|
||||
zfree(tokens);
|
||||
s_free(tokens);
|
||||
}
|
||||
|
||||
/* Append to the sds string "s" an escaped string representation where
|
||||
@ -906,13 +1020,13 @@ sds *sdssplitargs(const char *line, int *argc) {
|
||||
if (*p) p++;
|
||||
}
|
||||
/* add the token to the vector */
|
||||
vector = zrealloc(vector,((*argc)+1)*sizeof(char*));
|
||||
vector = s_realloc(vector,((*argc)+1)*sizeof(char*));
|
||||
vector[*argc] = current;
|
||||
(*argc)++;
|
||||
current = NULL;
|
||||
} else {
|
||||
/* Even on empty input string return something not NULL. */
|
||||
if (vector == NULL) vector = zmalloc(sizeof(void*));
|
||||
if (vector == NULL) vector = s_malloc(sizeof(void*));
|
||||
return vector;
|
||||
}
|
||||
}
|
||||
@ -920,7 +1034,7 @@ sds *sdssplitargs(const char *line, int *argc) {
|
||||
err:
|
||||
while((*argc)--)
|
||||
sdsfree(vector[*argc]);
|
||||
zfree(vector);
|
||||
s_free(vector);
|
||||
if (current) sdsfree(current);
|
||||
*argc = 0;
|
||||
return NULL;
|
||||
@ -962,14 +1076,26 @@ sds sdsjoin(char **argv, int argc, char *sep) {
|
||||
return join;
|
||||
}
|
||||
|
||||
#ifdef SDS_TEST_MAIN
|
||||
/* Like sdsjoin, but joins an array of SDS strings. */
|
||||
sds sdsjoinsds(sds *argv, int argc, const char *sep, size_t seplen) {
|
||||
sds join = sdsempty();
|
||||
int j;
|
||||
|
||||
for (j = 0; j < argc; j++) {
|
||||
join = sdscatsds(join, argv[j]);
|
||||
if (j != argc-1) join = sdscatlen(join,sep,seplen);
|
||||
}
|
||||
return join;
|
||||
}
|
||||
|
||||
#if defined(SDS_TEST_MAIN)
|
||||
#include <stdio.h>
|
||||
#include "testhelp.h"
|
||||
#include "limits.h"
|
||||
|
||||
int main(void) {
|
||||
#define UNUSED(x) (void)(x)
|
||||
int sdsTest(void) {
|
||||
{
|
||||
struct sdshdr *sh;
|
||||
sds x = sdsnew("foo"), y;
|
||||
|
||||
test_cond("Create a string and obtain the length",
|
||||
@ -1005,6 +1131,7 @@ int main(void) {
|
||||
sdslen(x) == 60 &&
|
||||
memcmp(x,"--Hello Hi! World -9223372036854775808,"
|
||||
"9223372036854775807--",60) == 0)
|
||||
printf("[%s]\n",x);
|
||||
|
||||
sdsfree(x);
|
||||
x = sdsnew("--");
|
||||
@ -1013,6 +1140,18 @@ int main(void) {
|
||||
sdslen(x) == 35 &&
|
||||
memcmp(x,"--4294967295,18446744073709551615--",35) == 0)
|
||||
|
||||
sdsfree(x);
|
||||
x = sdsnew(" x ");
|
||||
sdstrim(x," x");
|
||||
test_cond("sdstrim() works when all chars match",
|
||||
sdslen(x) == 0)
|
||||
|
||||
sdsfree(x);
|
||||
x = sdsnew(" x ");
|
||||
sdstrim(x," ");
|
||||
test_cond("sdstrim() works when a single char remains",
|
||||
sdslen(x) == 1 && x[0] == 'x')
|
||||
|
||||
sdsfree(x);
|
||||
x = sdsnew("xxciaoyyy");
|
||||
sdstrim(x,"xy");
|
||||
@ -1080,24 +1219,47 @@ int main(void) {
|
||||
memcmp(y,"\"\\a\\n\\x00foo\\r\"",15) == 0)
|
||||
|
||||
{
|
||||
int oldfree;
|
||||
unsigned int oldfree;
|
||||
char *p;
|
||||
int step = 10, j, i;
|
||||
|
||||
sdsfree(x);
|
||||
sdsfree(y);
|
||||
x = sdsnew("0");
|
||||
sh = (void*) (x-(sizeof(struct sdshdr)));
|
||||
test_cond("sdsnew() free/len buffers", sh->len == 1 && sh->free == 0);
|
||||
x = sdsMakeRoomFor(x,1);
|
||||
sh = (void*) (x-(sizeof(struct sdshdr)));
|
||||
test_cond("sdsMakeRoomFor()", sh->len == 1 && sh->free > 0);
|
||||
oldfree = sh->free;
|
||||
x[1] = '1';
|
||||
sdsIncrLen(x,1);
|
||||
test_cond("sdsIncrLen() -- content", x[0] == '0' && x[1] == '1');
|
||||
test_cond("sdsIncrLen() -- len", sh->len == 2);
|
||||
test_cond("sdsIncrLen() -- free", sh->free == oldfree-1);
|
||||
test_cond("sdsnew() free/len buffers", sdslen(x) == 1 && sdsavail(x) == 0);
|
||||
|
||||
/* Run the test a few times in order to hit the first two
|
||||
* SDS header types. */
|
||||
for (i = 0; i < 10; i++) {
|
||||
int oldlen = sdslen(x);
|
||||
x = sdsMakeRoomFor(x,step);
|
||||
int type = x[-1]&SDS_TYPE_MASK;
|
||||
|
||||
test_cond("sdsMakeRoomFor() len", sdslen(x) == oldlen);
|
||||
if (type != SDS_TYPE_5) {
|
||||
test_cond("sdsMakeRoomFor() free", sdsavail(x) >= step);
|
||||
oldfree = sdsavail(x);
|
||||
}
|
||||
p = x+oldlen;
|
||||
for (j = 0; j < step; j++) {
|
||||
p[j] = 'A'+j;
|
||||
}
|
||||
sdsIncrLen(x,step);
|
||||
}
|
||||
test_cond("sdsMakeRoomFor() content",
|
||||
memcmp("0ABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJ",x,101) == 0);
|
||||
test_cond("sdsMakeRoomFor() final length",sdslen(x)==101);
|
||||
|
||||
sdsfree(x);
|
||||
}
|
||||
}
|
||||
test_report()
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SDS_TEST_MAIN
|
||||
int main(void) {
|
||||
return sdsTest();
|
||||
}
|
||||
#endif
|
||||
|
186
deps/hiredis/sds.h
vendored
186
deps/hiredis/sds.h
vendored
@ -1,6 +1,8 @@
|
||||
/* SDSLib, A C dynamic strings library
|
||||
/* SDSLib 2.0 -- A C dynamic strings library
|
||||
*
|
||||
* Copyright (c) 2006-2010, Salvatore Sanfilippo <antirez at gmail dot com>
|
||||
* Copyright (c) 2006-2015, Salvatore Sanfilippo <antirez at gmail dot com>
|
||||
* Copyright (c) 2015, Oran Agra
|
||||
* Copyright (c) 2015, Redis Labs, Inc
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
@ -35,32 +37,188 @@
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <stdarg.h>
|
||||
#include <stdint.h>
|
||||
|
||||
typedef char *sds;
|
||||
|
||||
struct sdshdr {
|
||||
unsigned int len;
|
||||
unsigned int free;
|
||||
/* Note: sdshdr5 is never used, we just access the flags byte directly.
|
||||
* However is here to document the layout of type 5 SDS strings. */
|
||||
struct __attribute__ ((__packed__)) sdshdr5 {
|
||||
unsigned char flags; /* 3 lsb of type, and 5 msb of string length */
|
||||
char buf[];
|
||||
};
|
||||
struct __attribute__ ((__packed__)) sdshdr8 {
|
||||
uint8_t len; /* used */
|
||||
uint8_t alloc; /* excluding the header and null terminator */
|
||||
unsigned char flags; /* 3 lsb of type, 5 unused bits */
|
||||
char buf[];
|
||||
};
|
||||
struct __attribute__ ((__packed__)) sdshdr16 {
|
||||
uint16_t len; /* used */
|
||||
uint16_t alloc; /* excluding the header and null terminator */
|
||||
unsigned char flags; /* 3 lsb of type, 5 unused bits */
|
||||
char buf[];
|
||||
};
|
||||
struct __attribute__ ((__packed__)) sdshdr32 {
|
||||
uint32_t len; /* used */
|
||||
uint32_t alloc; /* excluding the header and null terminator */
|
||||
unsigned char flags; /* 3 lsb of type, 5 unused bits */
|
||||
char buf[];
|
||||
};
|
||||
struct __attribute__ ((__packed__)) sdshdr64 {
|
||||
uint64_t len; /* used */
|
||||
uint64_t alloc; /* excluding the header and null terminator */
|
||||
unsigned char flags; /* 3 lsb of type, 5 unused bits */
|
||||
char buf[];
|
||||
};
|
||||
|
||||
#define SDS_TYPE_5 0
|
||||
#define SDS_TYPE_8 1
|
||||
#define SDS_TYPE_16 2
|
||||
#define SDS_TYPE_32 3
|
||||
#define SDS_TYPE_64 4
|
||||
#define SDS_TYPE_MASK 7
|
||||
#define SDS_TYPE_BITS 3
|
||||
#define SDS_HDR_VAR(T,s) struct sdshdr##T *sh = (void*)((s)-(sizeof(struct sdshdr##T)));
|
||||
#define SDS_HDR(T,s) ((struct sdshdr##T *)((s)-(sizeof(struct sdshdr##T))))
|
||||
#define SDS_TYPE_5_LEN(f) ((f)>>SDS_TYPE_BITS)
|
||||
|
||||
static inline size_t sdslen(const sds s) {
|
||||
struct sdshdr *sh = (void*)(s-(sizeof(struct sdshdr)));
|
||||
return sh->len;
|
||||
unsigned char flags = s[-1];
|
||||
switch(flags&SDS_TYPE_MASK) {
|
||||
case SDS_TYPE_5:
|
||||
return SDS_TYPE_5_LEN(flags);
|
||||
case SDS_TYPE_8:
|
||||
return SDS_HDR(8,s)->len;
|
||||
case SDS_TYPE_16:
|
||||
return SDS_HDR(16,s)->len;
|
||||
case SDS_TYPE_32:
|
||||
return SDS_HDR(32,s)->len;
|
||||
case SDS_TYPE_64:
|
||||
return SDS_HDR(64,s)->len;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline size_t sdsavail(const sds s) {
|
||||
struct sdshdr *sh = (void*)(s-(sizeof(struct sdshdr)));
|
||||
return sh->free;
|
||||
unsigned char flags = s[-1];
|
||||
switch(flags&SDS_TYPE_MASK) {
|
||||
case SDS_TYPE_5: {
|
||||
return 0;
|
||||
}
|
||||
case SDS_TYPE_8: {
|
||||
SDS_HDR_VAR(8,s);
|
||||
return sh->alloc - sh->len;
|
||||
}
|
||||
case SDS_TYPE_16: {
|
||||
SDS_HDR_VAR(16,s);
|
||||
return sh->alloc - sh->len;
|
||||
}
|
||||
case SDS_TYPE_32: {
|
||||
SDS_HDR_VAR(32,s);
|
||||
return sh->alloc - sh->len;
|
||||
}
|
||||
case SDS_TYPE_64: {
|
||||
SDS_HDR_VAR(64,s);
|
||||
return sh->alloc - sh->len;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void sdssetlen(sds s, size_t newlen) {
|
||||
unsigned char flags = s[-1];
|
||||
switch(flags&SDS_TYPE_MASK) {
|
||||
case SDS_TYPE_5:
|
||||
{
|
||||
unsigned char *fp = ((unsigned char*)s)-1;
|
||||
*fp = SDS_TYPE_5 | (newlen << SDS_TYPE_BITS);
|
||||
}
|
||||
break;
|
||||
case SDS_TYPE_8:
|
||||
SDS_HDR(8,s)->len = newlen;
|
||||
break;
|
||||
case SDS_TYPE_16:
|
||||
SDS_HDR(16,s)->len = newlen;
|
||||
break;
|
||||
case SDS_TYPE_32:
|
||||
SDS_HDR(32,s)->len = newlen;
|
||||
break;
|
||||
case SDS_TYPE_64:
|
||||
SDS_HDR(64,s)->len = newlen;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static inline void sdsinclen(sds s, size_t inc) {
|
||||
unsigned char flags = s[-1];
|
||||
switch(flags&SDS_TYPE_MASK) {
|
||||
case SDS_TYPE_5:
|
||||
{
|
||||
unsigned char *fp = ((unsigned char*)s)-1;
|
||||
unsigned char newlen = SDS_TYPE_5_LEN(flags)+inc;
|
||||
*fp = SDS_TYPE_5 | (newlen << SDS_TYPE_BITS);
|
||||
}
|
||||
break;
|
||||
case SDS_TYPE_8:
|
||||
SDS_HDR(8,s)->len += inc;
|
||||
break;
|
||||
case SDS_TYPE_16:
|
||||
SDS_HDR(16,s)->len += inc;
|
||||
break;
|
||||
case SDS_TYPE_32:
|
||||
SDS_HDR(32,s)->len += inc;
|
||||
break;
|
||||
case SDS_TYPE_64:
|
||||
SDS_HDR(64,s)->len += inc;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* sdsalloc() = sdsavail() + sdslen() */
|
||||
static inline size_t sdsalloc(const sds s) {
|
||||
unsigned char flags = s[-1];
|
||||
switch(flags&SDS_TYPE_MASK) {
|
||||
case SDS_TYPE_5:
|
||||
return SDS_TYPE_5_LEN(flags);
|
||||
case SDS_TYPE_8:
|
||||
return SDS_HDR(8,s)->alloc;
|
||||
case SDS_TYPE_16:
|
||||
return SDS_HDR(16,s)->alloc;
|
||||
case SDS_TYPE_32:
|
||||
return SDS_HDR(32,s)->alloc;
|
||||
case SDS_TYPE_64:
|
||||
return SDS_HDR(64,s)->alloc;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void sdssetalloc(sds s, size_t newlen) {
|
||||
unsigned char flags = s[-1];
|
||||
switch(flags&SDS_TYPE_MASK) {
|
||||
case SDS_TYPE_5:
|
||||
/* Nothing to do, this type has no total allocation info. */
|
||||
break;
|
||||
case SDS_TYPE_8:
|
||||
SDS_HDR(8,s)->alloc = newlen;
|
||||
break;
|
||||
case SDS_TYPE_16:
|
||||
SDS_HDR(16,s)->alloc = newlen;
|
||||
break;
|
||||
case SDS_TYPE_32:
|
||||
SDS_HDR(32,s)->alloc = newlen;
|
||||
break;
|
||||
case SDS_TYPE_64:
|
||||
SDS_HDR(64,s)->alloc = newlen;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
sds sdsnewlen(const void *init, size_t initlen);
|
||||
sds sdsnew(const char *init);
|
||||
sds sdsempty(void);
|
||||
size_t sdslen(const sds s);
|
||||
sds sdsdup(const sds s);
|
||||
void sdsfree(sds s);
|
||||
size_t sdsavail(const sds s);
|
||||
sds sdsgrowzero(sds s, size_t len);
|
||||
sds sdscatlen(sds s, const void *t, size_t len);
|
||||
sds sdscat(sds s, const char *t);
|
||||
@ -91,11 +249,17 @@ sds sdscatrepr(sds s, const char *p, size_t len);
|
||||
sds *sdssplitargs(const char *line, int *argc);
|
||||
sds sdsmapchars(sds s, const char *from, const char *to, size_t setlen);
|
||||
sds sdsjoin(char **argv, int argc, char *sep);
|
||||
sds sdsjoinsds(sds *argv, int argc, const char *sep, size_t seplen);
|
||||
|
||||
/* Low level functions exposed to the user API */
|
||||
sds sdsMakeRoomFor(sds s, size_t addlen);
|
||||
void sdsIncrLen(sds s, int incr);
|
||||
sds sdsRemoveFreeSpace(sds s);
|
||||
size_t sdsAllocSize(sds s);
|
||||
void *sdsAllocPtr(sds s);
|
||||
|
||||
#ifdef REDIS_TEST
|
||||
int sdsTest(int argc, char *argv[]);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
42
deps/hiredis/sdsalloc.h
vendored
Normal file
42
deps/hiredis/sdsalloc.h
vendored
Normal file
@ -0,0 +1,42 @@
|
||||
/* SDSLib 2.0 -- A C dynamic strings library
|
||||
*
|
||||
* Copyright (c) 2006-2015, Salvatore Sanfilippo <antirez at gmail dot com>
|
||||
* Copyright (c) 2015, Redis Labs, Inc
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/* SDS allocator selection.
|
||||
*
|
||||
* This file is used in order to change the SDS allocator at compile time.
|
||||
* Just define the following defines to what you want to use. Also add
|
||||
* the include of your alternate allocator if needed (not needed in order
|
||||
* to use the default libc allocator). */
|
||||
|
||||
#include "zmalloc.h"
|
||||
#define s_malloc zmalloc
|
||||
#define s_realloc zrealloc
|
||||
#define s_free zfree
|
Loading…
x
Reference in New Issue
Block a user