diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/sds.h | 131 | ||||
| -rw-r--r-- | src/yasl.c (renamed from src/sds.c) | 374 | ||||
| -rw-r--r-- | src/yasl.h | 131 |
3 files changed, 318 insertions, 318 deletions
diff --git a/src/sds.h b/src/sds.h deleted file mode 100644 index 6b3a951..0000000 --- a/src/sds.h +++ /dev/null @@ -1,131 +0,0 @@ -/* 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. - * - * 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 SDS_H -#define SDS_H - -#define SDS_MAX_PREALLOC (1024*1024) - -#include <stdarg.h> -#include <stddef.h> -#include <sys/types.h> - -typedef char *sds; - -struct sdshdr { - size_t len; - size_t free; - char buf[]; -}; - - -/** - * User API function prototypes - */ - -/// Initialization -sds sdsnew(const void *init, size_t initlen); -sds sdsdup(const sds s); -sds sdsempty(void); -sds sdsfromlonglong(long long value); - - -/// Querying -int sdscmp(const sds s1, const sds s2); - - -/// Modification -void sdsclear(sds s); -sds sdsgrowzero(sds s, size_t len); -sds sdscpylen(sds s, const char *t, size_t len); -sds sdscpy(sds s, const char *t); -sds sdsjoin(char **argv, int argc, char *sep, size_t seplen); -sds sdsjoinsds(sds *argv, int argc, const char *sep, size_t seplen); -sds sdsmapchars(sds s, const char *from, const char *to, size_t setlen); -void sdsrange(sds s, ptrdiff_t start, ptrdiff_t end); -void sdstolower(sds s); -void sdstoupper(sds s); -void sdstrim(sds s, const char *cset); -void sdsupdatelen(sds s); -sds *sdssplitargs(const char *line, int *argc); -sds *sdssplitlen(const char *s, size_t len, const char *sep, size_t seplen, size_t *count); - -// Concatenation -sds sdscat(sds s, const char *t); -sds sdscatsds(sds s, const sds t); -sds sdscatlen(sds s, const void *t, size_t len); -sds sdscatrepr(sds s, const char *p, size_t len); -sds sdscatvprintf(sds s, const char *fmt, va_list ap); -#ifdef __GNUC__ -sds sdscatprintf(sds s, const char *fmt, ...) - __attribute__((format(printf, 2, 3))); -#else -sds sdscatprintf(sds s, const char *fmt, ...); -#endif - - -/// Freeing -void sdsfree(sds s); -void sdsfreesplitres(sds *tokens, size_t count); - - -/// Low-level API function prototypes -size_t sdsAllocSize(sds s); -void sdsIncrLen(sds s, size_t incr); -sds sdsMakeRoomFor(sds s, size_t addlen); -sds sdsRemoveFreeSpace(sds s); - - -/// Low-level helper functions -int is_hex_digit(char c); -int hex_digit_to_int(char c); - - -/** - * Inline functions - */ - -static inline struct sdshdr *sdsheader(const sds s) { - /* The sdshdr pointer has a different alignment than the original char - * pointer, so cast it through a void pointer to silence the warning. */ - return (void *)(s - (sizeof (struct sdshdr))); -} - -static inline sds sdsauto(const char *s) { - return sdsnew(s, s ? strlen(s) : 0); -} - -static inline size_t sdsavail(const sds s) { - return sdsheader(s)->free; -} - -static inline size_t sdslen(const sds s) { - return sdsheader(s)->len; -} - - -#endif @@ -1,4 +1,4 @@ -/* SDS (Simple Dynamic Strings), A C dynamic strings library. +/* yasl, Yet Another String Library for C * * Copyright (c) 2006-2014, Salvatore Sanfilippo <antirez at gmail dot com> * All rights reserved. @@ -32,30 +32,30 @@ #include <stdlib.h> #include <string.h> -#include "sds.h" +#include "yasl.h" /// Initialization -/* Create a new sds string with the content specified by the 'init' pointer +/* Create a new yasl string with the content specified by the 'init' pointer * and 'initlen'. * If NULL is used for 'init' the string is initialized with zero bytes. * - * The string is always null-termined (all the sds strings are, always) so - * even if you create an sds string with: + * The string is always null-termined (all the yasl strings are, always) so + * even if you create a yasl string with: * - * mystring = sdsnew("abc", 3"); + * mystring = yaslnew("abc", 3"); * * You can print the string with printf() as there is an implicit \0 at the * end of the string. However the string is binary safe and can contain - * \0 characters in the middle, as the length is stored in the sds header. */ -sds sdsnew(const void *init, size_t initlen) { - struct sdshdr *sh; + * \0 characters in the middle, as the length is stored in the yasl header. */ +yastr yaslnew(const void *init, size_t initlen) { + struct yastrhdr *sh; if (init) { - sh = malloc(sizeof(struct sdshdr) + initlen + 1); + sh = malloc(sizeof(struct yastrhdr) + initlen + 1); } else { - sh = calloc(sizeof(struct sdshdr) + initlen + 1, 1); + sh = calloc(sizeof(struct yastrhdr) + initlen + 1, 1); } if (sh == NULL) { return NULL; } @@ -68,22 +68,22 @@ sds sdsnew(const void *init, size_t initlen) { return (char*)sh->buf; } -/* Duplicate an sds string. */ -sds sdsdup(const sds s) { - return sdsnew(s, sdslen(s)); +/* Duplicate a yasl string. */ +yastr yasldup(const yastr s) { + return yaslnew(s, yasllen(s)); } -/* Create an empty (zero length) sds string. Even in this case the string +/* Create an empty (zero length) yasl string. Even in this case the string * always has an implicit null term. */ -sds sdsempty(void) { - return sdsnew("", 0); +yastr yaslempty(void) { + return yaslnew("", 0); } -/* Create an sds string from a long long value. It is much faster than: +/* Create a yasl string from a long long value. It is much faster than: * - * sdscatprintf(sdsempty(), "%lld\n", value); + * yaslcatprintf(yaslempty(), "%lld\n", value); */ -sds sdsfromlonglong(long long value) { +yastr yaslfromlonglong(long long value) { char buf[32], *p; unsigned long long v; @@ -95,13 +95,13 @@ sds sdsfromlonglong(long long value) { } while(v); if (value < 0) { *p-- = '-'; } p++; - return sdsnew(p, (size_t)(32 - (p - buf))); + return yaslnew(p, (size_t)(32 - (p - buf))); } /// Querying -/* Compare two sds strings s1 and s2 with memcmp(). +/* Compare two yasl strings s1 and s2 with memcmp(). * * Return value: * @@ -112,12 +112,12 @@ sds sdsfromlonglong(long long value) { * If two strings share exactly the same prefix, but one of the two has * additional characters, the longer string is considered to be greater than * the smaller one. */ -int sdscmp(const sds s1, const sds s2) { +int yaslcmp(const yastr s1, const yastr s2) { size_t l1, l2, minlen; int cmp; - l1 = sdslen(s1); - l2 = sdslen(s2); + l1 = yasllen(s1); + l2 = yasllen(s2); minlen = (l1 < l2) ? l1 : l2; cmp = memcmp(s1, s2, minlen); if (cmp == 0) { return (int)(l1 - l2); } @@ -127,32 +127,32 @@ int sdscmp(const sds s1, const sds s2) { /// Modification -/* Modify an sds string on-place to make it empty (zero length). +/* Modify a yasl string in-place to make it empty (zero length). * However all the existing buffer is not discarded but set as free space * so that next append operations will not require allocations up to the * number of bytes previously available. */ -void sdsclear(sds s) { - struct sdshdr *sh = sdsheader(s); +void yaslclear(yastr s) { + struct yastrhdr *sh = yaslheader(s); sh->free += sh->len; sh->len = 0; sh->buf[0] = '\0'; } -/* 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. +/* Grow the yasl string to have the specified length. Bytes that were not part + * of the original length of the yasl string will be set to zero. * * if the specified length is smaller than the current length, no operation * is performed. */ -sds sdsgrowzero(sds s, size_t len) { - struct sdshdr *sh = sdsheader(s); +yastr yaslgrowzero(yastr s, size_t len) { + struct yastrhdr *sh = yaslheader(s); size_t totlen, curlen = sh->len; if (len <= curlen) { return s; } - s = sdsMakeRoomFor(s, len - curlen); + s = yaslMakeRoomFor(s, len - curlen); if (s == NULL) { return NULL; } /* Make sure added region doesn't contain garbage */ - sh = sdsheader(s); + sh = yaslheader(s); memset(s + curlen, 0, (len - curlen + 1)); /* also set trailing \0 byte */ totlen = sh->len + sh->free; sh->len = len; @@ -160,16 +160,16 @@ sds sdsgrowzero(sds s, size_t len) { return s; } -/* Destructively modify the sds string 's' to hold the specified binary +/* Destructively modify the yasl string 's' to hold the specified binary * safe string pointed by 't' of length 'len' bytes. */ -sds sdscpylen(sds s, const char *t, size_t len) { - struct sdshdr *sh = sdsheader(s); +yastr yaslcpylen(yastr s, const char *t, size_t len) { + struct yastrhdr *sh = yaslheader(s); size_t totlen = sh->free + sh->len; if (totlen < len) { - s = sdsMakeRoomFor(s, len - sh->len); + s = yaslMakeRoomFor(s, len - sh->len); if (s == NULL) { return NULL; } - sh = sdsheader(s); + sh = yaslheader(s); totlen = sh->free + sh->len; } memcpy(s, t, len); @@ -179,31 +179,31 @@ sds sdscpylen(sds s, const char *t, size_t len) { return s; } -/* Like sdscpylen() but 't' must be a null-termined string so that the length +/* Like yaslcpylen() but 't' must be a null-termined string so that the length * of the string is obtained with strlen(). */ -sds sdscpy(sds s, const char *t) { - return sdscpylen(s, t, strlen(t)); +yastr yaslcpy(yastr s, const char *t) { + return yaslcpylen(s, t, strlen(t)); } /* Join an array of C strings using the specified separator (also a C string). - * Returns the result as an sds string. */ -sds sdsjoin(char **argv, int argc, char *sep, size_t seplen) { - sds join = sdsempty(); + * Returns the result as a yasl string. */ +yastr yasljoin(char **argv, int argc, char *sep, size_t seplen) { + yastr join = yaslempty(); for (int j = 0; j < argc; j++) { - join = sdscat(join, argv[j]); - if (j != argc - 1) { join = sdscatlen(join, sep, seplen); } + join = yaslcat(join, argv[j]); + if (j != argc - 1) { join = yaslcatlen(join, sep, seplen); } } return join; } -/* Like sdsjoin, but joins an array of SDS strings. */ -sds sdsjoinsds(sds *argv, int argc, const char *sep, size_t seplen) { - sds join = sdsempty(); +/* Like yasljoin, but joins an array of yasl strings. */ +yastr yasljoinyasl(yastr *argv, int argc, const char *sep, size_t seplen) { + yastr join = yaslempty(); for (int j = 0; j < argc; j++) { - join = sdscatsds(join, argv[j]); - if (j != argc - 1) { join = sdscatlen(join, sep, seplen); } + join = yaslcatyasl(join, argv[j]); + if (j != argc - 1) { join = yaslcatlen(join, sep, seplen); } } return join; } @@ -212,13 +212,13 @@ sds sdsjoinsds(sds *argv, int argc, const char *sep, size_t seplen) { * characters specified in the 'from' string to the corresponding character * in the 'to' array. * - * For instance: sdsmapchars(mystring, "ho", "01", 2) + * For instance: yaslmapchars(mystring, "ho", "01", 2) * will have the effect of turning the string "hello" into "0ell1". * - * The function returns the sds string pointer, that is always the same + * The function returns the yasl string pointer, that is always the same * as the input pointer since no resize is needed. */ -sds sdsmapchars(sds s, const char *from, const char *to, size_t setlen) { - for (size_t j = 0; j < sdslen(s); j++) { +yastr yaslmapchars(yastr s, const char *from, const char *to, size_t setlen) { + for (size_t j = 0; j < yasllen(s); j++) { for (size_t i = 0; i < setlen; i++) { if (s[j] == from[i]) { s[j] = to[i]; @@ -242,12 +242,12 @@ sds sdsmapchars(sds s, const char *from, const char *to, size_t setlen) { * * Example: * - * s = sdsauto("Hello World"); - * sdsrange(s, 1, -1); => "ello World" + * s = yaslauto("Hello World"); + * yaslrange(s, 1, -1); => "ello World" */ -void sdsrange(sds s, ptrdiff_t start, ptrdiff_t end) { - struct sdshdr *sh = sdsheader(s); - size_t newlen, len = sdslen(s); +void yaslrange(yastr s, ptrdiff_t start, ptrdiff_t end) { + struct yastrhdr *sh = yaslheader(s); + size_t newlen, len = yasllen(s); if (len == 0) { return; } if (start < 0) { @@ -275,16 +275,16 @@ void sdsrange(sds s, ptrdiff_t start, ptrdiff_t end) { sh->len = newlen; } -/* Apply tolower() to every character of the sds string 's'. */ -void sdstolower(sds s) { - for (size_t j = 0; j < sdslen(s); j++) { +/* Apply tolower() to every character of the yasl string 's'. */ +void yasltolower(yastr s) { + for (size_t j = 0; j < yasllen(s); j++) { s[j] = (char)tolower(s[j]); } } -/* Apply toupper() to every character of the sds string 's'. */ -void sdstoupper(sds s) { - for (size_t j = 0; j < sdslen(s); j++) { +/* Apply toupper() to every character of the yasl string 's'. */ +void yasltoupper(yastr s) { + for (size_t j = 0; j < yasllen(s); j++) { s[j] = (char)toupper(s[j]); } } @@ -292,24 +292,24 @@ void sdstoupper(sds s) { /* Remove the part of the string from left and from right composed just of * contiguous characters found in 'cset', that is a null terminted C string. * - * After the call, the modified sds string is no longer valid and all the + * After the call, the modified yasl string is no longer valid and all the * references must be substituted with the new pointer returned by the call. * * Example: * - * s = sdsauto("AA...AA.a.aa.aHelloWorld :::"); - * s = sdstrim(s, "A. :"); + * s = yaslauto("AA...AA.a.aa.aHelloWorld :::"); + * s = yasltrim(s, "A. :"); * printf("%s\n", s); * * Output will be just "Hello World". */ -void sdstrim(sds s, const char *cset) { - struct sdshdr *sh = sdsheader(s); +void yasltrim(yastr s, const char *cset) { + struct yastrhdr *sh = yaslheader(s); char *start, *end, *sp, *ep; size_t len; sp = start = s; - ep = end = s + sdslen(s) - 1; + ep = end = s + yasllen(s) - 1; while(sp <= end && strchr(cset, *sp)) { sp++; } while(ep > start && strchr(cset, *ep)) { ep--; } len = (size_t)((sp > ep) ? 0 : ((ep - sp) + 1)); @@ -319,22 +319,22 @@ void sdstrim(sds s, const char *cset) { sh->len = len; } -/* Set the sds string length to the length as obtained with strlen(), so +/* Set the yasl string length to the length as obtained with strlen(), so * considering as content only up to the first null term character. * - * This function is useful when the sds string is hacked manually in some + * This function is useful when the yasl string is hacked manually in some * way, like in the following example: * - * s = sdsauto("foobar"); + * s = yaslauto("foobar"); * s[2] = '\0'; - * sdsupdatelen(s); - * printf("%d\n", sdslen(s)); + * yaslupdatelen(s); + * printf("%d\n", yasllen(s)); * - * The output will be "2", but if we comment out the call to sdsupdatelen() + * The output will be "2", but if we comment out the call to yaslupdatelen() * the output will be "6" as the string was modified but the logical length * remains 6 bytes. */ -void sdsupdatelen(sds s) { - struct sdshdr *sh = sdsheader(s); +void yaslupdatelen(yastr s) { + struct yastrhdr *sh = yaslheader(s); size_t reallen = strlen(s); sh->free += (sh->len - reallen); sh->len = reallen; @@ -346,20 +346,20 @@ void sdsupdatelen(sds s) { * foo bar "newline are supported\n" and "\xff\x00otherstuff" * * The number of arguments is stored into *argc, and an array - * of sds is returned. + * of yasl strings is returned. * - * The caller should free the resulting array of sds strings with - * sdsfreesplitres(). + * The caller should free the resulting array of yasl strings with + * yaslfreesplitres(). * - * Note that sdscatrepr() is able to convert back a string into - * a quoted string in the same format sdssplitargs() is able to parse. + * Note that yaslcatrepr() is able to convert back a string into + * a quoted string in the same format yaslsplitargs() is able to parse. * * The function returns the allocated tokens on success, even when the * input string is empty, or NULL if the input contains unbalanced * quotes or closed quotes followed by non space characters * as in: "foo"bar or "foo' */ -sds *sdssplitargs(const char *line, int *argc) { +yastr *yaslsplitargs(const char *line, int *argc) { const char *p = line; char *current = NULL; char **vector = NULL; @@ -374,7 +374,7 @@ sds *sdssplitargs(const char *line, int *argc) { int insq=0; /* set to 1 if we are in 'single quotes' */ int done=0; - if (current == NULL) { current = sdsempty(); } + if (current == NULL) { current = yaslempty(); } while(!done) { if (inq) { if (*p == '\\' && *(p + 1) == 'x' && @@ -385,7 +385,7 @@ sds *sdssplitargs(const char *line, int *argc) { byte = (unsigned char)((hex_digit_to_int(*(p + 2)) * 16) + hex_digit_to_int(*(p + 3))); - current = sdscatlen(current, (char*)&byte, 1); + current = yaslcatlen(current, (char*)&byte, 1); p += 3; } else if (*p == '\\' && *(p + 1)) { char c; @@ -399,7 +399,7 @@ sds *sdssplitargs(const char *line, int *argc) { case 'a': c = '\a'; break; default: c = *p; break; } - current = sdscatlen(current, &c, 1); + current = yaslcatlen(current, &c, 1); } else if (*p == '"') { /* closing quote must be followed by a space or * nothing at all. */ @@ -409,12 +409,12 @@ sds *sdssplitargs(const char *line, int *argc) { /* unterminated quotes */ goto err; } else { - current = sdscatlen(current, p, 1); + current = yaslcatlen(current, p, 1); } } else if (insq) { if (*p == '\\' && *(p + 1) == '\'') { p++; - current = sdscatlen(current, "'", 1); + current = yaslcatlen(current, "'", 1); } else if (*p == '\'') { /* closing quote must be followed by a space or * nothing at all. */ @@ -424,7 +424,7 @@ sds *sdssplitargs(const char *line, int *argc) { /* unterminated quotes */ goto err; } else { - current = sdscatlen(current, p, 1); + current = yaslcatlen(current, p, 1); } } else { switch(*p) { @@ -442,7 +442,7 @@ sds *sdssplitargs(const char *line, int *argc) { insq=1; break; default: - current = sdscatlen(current, p, 1); + current = yaslcatlen(current, p, 1); break; } } @@ -462,16 +462,16 @@ sds *sdssplitargs(const char *line, int *argc) { err: while((*argc)--) { - sdsfree(vector[*argc]); + yaslfree(vector[*argc]); } free(vector); - if (current) { sdsfree(current); } + if (current) { yaslfree(current); } *argc = 0; return NULL; } /* Split 's' with separator in 'sep'. An array - * of sds strings is returned. *count will be set + * of yasl strings is returned. *count will be set * by reference to the number of tokens returned. * * On out of memory, zero length string, zero length @@ -479,20 +479,20 @@ err: * * Note that 'sep' is able to split a string using * a multi-character separator. For example - * sdssplit("foo_-_bar", "_-_"); will return two + * yaslsplit("foo_-_bar", "_-_"); will return two * elements "foo" and "bar". * * This version of the function is binary-safe but - * requires length arguments. sdssplit() is just the + * requires length arguments. yaslsplit() is just the * same function but for zero-terminated strings. */ -sds *sdssplitlen(const char *s, size_t len, const char *sep, size_t seplen, size_t *count) { +yastr *yaslsplitlen(const char *s, size_t len, const char *sep, size_t seplen, size_t *count) { size_t elements = 0, slots = 5, start = 0; - sds *tokens; + yastr *tokens; if (seplen < 1) { return NULL; } - tokens = malloc(sizeof(sds)*slots); + tokens = malloc(sizeof(yastr)*slots); if (tokens == NULL) { return NULL; } if (len == 0) { @@ -502,16 +502,16 @@ sds *sdssplitlen(const char *s, size_t len, const char *sep, size_t seplen, size for (size_t j = 0; j < (len - (seplen - 1)); j++) { /* make sure there is room for the next element and the final one */ if (slots < elements + 2) { - sds *newtokens; + yastr *newtokens; slots *= 2; - newtokens = realloc(tokens, sizeof(sds) * slots); + newtokens = realloc(tokens, sizeof(yastr) * slots); 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] = sdsnew(s + start, (size_t)(j - start)); + tokens[elements] = yaslnew(s + start, (size_t)(j - start)); if (tokens[elements] == NULL) { goto cleanup; } elements++; start = j + seplen; @@ -519,7 +519,7 @@ sds *sdssplitlen(const char *s, size_t len, const char *sep, size_t seplen, size } } /* Add the final element. We are sure there is room in the tokens array. */ - tokens[elements] = sdsnew(s + start, (size_t)(len - start)); + tokens[elements] = yaslnew(s + start, (size_t)(len - start)); if (tokens[elements] == NULL) { goto cleanup; } elements++; *count = elements; @@ -528,7 +528,7 @@ sds *sdssplitlen(const char *s, size_t len, const char *sep, size_t seplen, size cleanup: { for (size_t i = 0; i < elements; i++) { - sdsfree(tokens[i]); + yaslfree(tokens[i]); } free(tokens); *count = 0; @@ -538,34 +538,34 @@ cleanup: // Concatenation -/* Append the specified null termianted C string to the sds string 's'. +/* Append the specified null termianted C string to the yasl string 's'. * - * After the call, the passed sds string is no longer valid and all the + * After the call, the passed yasl string is no longer valid and all the * references must be substituted with the new pointer returned by the call. */ -sds sdscat(sds s, const char *t) { - return sdscatlen(s, t, strlen(t)); +yastr yaslcat(yastr s, const char *t) { + return yaslcatlen(s, t, strlen(t)); } -/* Append the specified sds 't' to the existing sds 's'. +/* Append the specified yasl string 't' to the existing yasl string 's'. * - * After the call, the modified sds string is no longer valid and all the + * After the call, the modified yasl string is no longer valid and all the * references must be substituted with the new pointer returned by the call. */ -sds sdscatsds(sds s, const sds t) { - return sdscatlen(s, t, sdslen(t)); +yastr yaslcatyasl(yastr s, const yastr t) { + return yaslcatlen(s, t, yasllen(t)); } /* Append the specified binary-safe string pointed by 't' of 'len' bytes to the - * end of the specified sds string 's'. + * end of the specified yasl string 's'. * - * After the call, the passed sds string is no longer valid and all the + * After the call, the passed yasl string is no longer valid and all the * references must be substituted with the new pointer returned by the call. */ -sds sdscatlen(sds s, const void *t, size_t len) { - struct sdshdr *sh; - size_t curlen = sdslen(s); +yastr yaslcatlen(yastr s, const void *t, size_t len) { + struct yastrhdr *sh; + size_t curlen = yasllen(s); - s = sdsMakeRoomFor(s, len); + s = yaslMakeRoomFor(s, len); if (s == NULL) { return NULL; } - sh = sdsheader(s); + sh = yaslheader(s); memcpy(s + curlen, t, len); sh->len = curlen + len; sh->free = sh->free - len; @@ -573,41 +573,41 @@ sds sdscatlen(sds s, const void *t, size_t len) { return s; } -/* Append to the sds string "s" an escaped string representation where +/* Append to the yasl string "s" an escaped string representation where * all the non-printable characters (tested with isprint()) are turned into * escapes in the form "\n\r\a...." or "\x<hex-number>". * - * After the call, the modified sds string is no longer valid and all the + * After the call, the modified yasl string is no longer valid and all the * references must be substituted with the new pointer returned by the call. */ -sds sdscatrepr(sds s, const char *p, size_t len) { - s = sdscatlen(s, "\"", 1); +yastr yaslcatrepr(yastr s, const char *p, size_t len) { + s = yaslcatlen(s, "\"", 1); while(len--) { switch(*p) { case '\\': case '"': - s = sdscatprintf(s, "\\%c", *p); + s = yaslcatprintf(s, "\\%c", *p); 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; + case '\n': s = yaslcatlen(s, "\\n", 2); break; + case '\r': s = yaslcatlen(s, "\\r", 2); break; + case '\t': s = yaslcatlen(s, "\\t", 2); break; + case '\a': s = yaslcatlen(s, "\\a", 2); break; + case '\b': s = yaslcatlen(s, "\\b", 2); break; default: if (isprint(*p)) { - s = sdscatprintf(s, "%c", *p); + s = yaslcatprintf(s, "%c", *p); } else { - s = sdscatprintf(s, "\\x%02x", (unsigned char)*p); + s = yaslcatprintf(s, "\\x%02x", (unsigned char)*p); break; } } p++; } - return sdscatlen(s, "\"", 1); + return yaslcatlen(s, "\"", 1); } -/* Like sdscatpritf() but gets va_list instead of being variadic. */ +/* Like yaslcatpritf() but gets va_list instead of being variadic. */ #pragma GCC diagnostic ignored "-Wformat-nonliteral" -sds sdscatvprintf(sds s, const char *fmt, va_list ap) { +yastr yaslcatvprintf(yastr s, const char *fmt, va_list ap) { va_list cpy; char *buf, *t; size_t buflen = 16; @@ -625,33 +625,33 @@ sds sdscatvprintf(sds s, const char *fmt, va_list ap) { } break; } - t = sdscat(s, buf); + t = yaslcat(s, buf); free(buf); return t; } #pragma GCC diagnostic warning "-Wformat-nonliteral" -/* Append to the sds string 's' a string obtained using printf-alike format +/* Append to the yasl string 's' a string obtained using printf-alike format * specifier. * - * After the call, the modified sds string is no longer valid and all the + * After the call, the modified yasl string is no longer valid and all the * references must be substituted with the new pointer returned by the call. * * Example: * - * s = sdsempty("Sum is: "); - * s = sdscatprintf(s, "%d + %d = %d", a, b, a + b). + * s = yaslempty("Sum is: "); + * s = yaslcatprintf(s, "%d + %d = %d", a, b, a + b). * * Often you need to create a string from scratch with the printf-alike - * format. When this is the need, just use sdsempty() as the target string: + * format. When this is the need, just use yaslempty() as the target string: * - * s = sdscatprintf(sdsempty(), "... your format ...", args); + * s = yaslcatprintf(yaslempty(), "... your format ...", args); */ -sds sdscatprintf(sds s, const char *fmt, ...) { +yastr yaslcatprintf(yastr s, const char *fmt, ...) { va_list ap; char *t; va_start(ap, fmt); - t = sdscatvprintf(s, fmt, ap); + t = yaslcatvprintf(s, fmt, ap); va_end(ap); return t; } @@ -659,17 +659,17 @@ sds sdscatprintf(sds s, const char *fmt, ...) { /// Freeing -/* Free an sds string. No operation is performed if 's' is NULL. */ -void sdsfree(sds s) { +/* Free a yasl string. No operation is performed if 's' is NULL. */ +void yaslfree(yastr s) { if (s == NULL) { return; } - free(sdsheader(s)); + free(yaslheader(s)); } -/* Free the result returned by sdssplitlen(), or do nothing if 'tokens' is NULL. */ -void sdsfreesplitres(sds *tokens, size_t count) { +/* Free the result returned by yaslsplitlen(), or do nothing if 'tokens' is NULL. */ +void yaslfreesplitres(yastr *tokens, size_t count) { if (!tokens) { return; } while(count--) { - sdsfree(tokens[count]); + yaslfree(tokens[count]); } free(tokens); } @@ -677,41 +677,41 @@ void sdsfreesplitres(sds *tokens, size_t count) { // Low-level functions -/* Return the total size of the allocation of the specifed sds string, +/* Return the total size of the allocation of the specifed yasl string, * including: - * 1) The sds header before the pointer. + * 1) The yasl header before the pointer. * 2) The string. * 3) The free buffer at the end if any. * 4) The implicit null term. */ -size_t sdsAllocSize(sds s) { - struct sdshdr *sh = sdsheader(s); +size_t yaslAllocSize(yastr s) { + struct yastrhdr *sh = yaslheader(s); return sizeof(*sh) + sh->len + sh->free + 1; } -/* Increment the sds length and decrements the left free space at the - * end of the string according to 'incr'. Also set the null term - * in the new end of the string. +/* Increment the yasl string length and decrements the left free space at the + * end of the string according to 'incr'. Also set the null term in the new end + * of the string. * * This function is used in order to fix the string length after the - * user calls sdsMakeRoomFor(), writes something after the end of + * user calls yaslMakeRoomFor(), writes something after the end of * the current string, and finally needs to set the new length. * * Usage example: * - * Using sdsIncrLen() and sdsMakeRoomFor() it is possible to mount the - * following schema, to cat bytes coming from the kernel to the end of an - * sds string without copying into an intermediate buffer: + * Using yaslIncrLen() and yaslMakeRoomFor() it is possible to mount the + * following schema, to cat bytes coming from the kernel to the end of a + * yasl string without copying into an intermediate buffer: * - * oldlen = sdslen(s); - * s = sdsMakeRoomFor(s, BUFFER_SIZE); + * oldlen = yasllen(s); + * s = yaslMakeRoomFor(s, BUFFER_SIZE); * nread = read(fd, s + oldlen, BUFFER_SIZE); * ... check for nread <= 0 and handle it ... - * sdsIncrLen(s, nread); + * yaslIncrLen(s, nread); */ -void sdsIncrLen(sds s, size_t incr) { - struct sdshdr *sh = sdsheader(s); +void yaslIncrLen(yastr s, size_t incr) { + struct yastrhdr *sh = yaslheader(s); assert(sh->free >= incr); sh->len += incr; @@ -719,44 +719,44 @@ void sdsIncrLen(sds s, size_t incr) { s[sh->len] = '\0'; } -/* Enlarge the free space at the end of the sds string so that the caller +/* Enlarge the free space at the end of the yasl string so that the caller * is sure that after calling this function can overwrite up to addlen * bytes after the end of the string, plus one more byte for nul term. * - * Note: this does not change the *length* of the sds string as returned - * by sdslen(), but only the free buffer space we have. */ -sds sdsMakeRoomFor(sds s, size_t addlen) { - struct sdshdr *sh, *newsh; - size_t free = sdsavail(s); + * Note: this does not change the *length* of the yasl string as returned + * by yasllen(), but only the free buffer space we have. */ +yastr yaslMakeRoomFor(yastr s, size_t addlen) { + struct yastrhdr *sh, *newsh; + size_t free = yaslavail(s); size_t len, newlen; if (free >= addlen) { return s; } - len = sdslen(s); - sh = sdsheader(s); + len = yasllen(s); + sh = yaslheader(s); newlen = (len + addlen); - if (newlen < SDS_MAX_PREALLOC) { + if (newlen < YASL_MAX_PREALLOC) { newlen *= 2; } else { - newlen += SDS_MAX_PREALLOC; + newlen += YASL_MAX_PREALLOC; } - newsh = realloc(sh, sizeof(struct sdshdr) + newlen + 1); + newsh = realloc(sh, sizeof(struct yastrhdr) + newlen + 1); if (newsh == NULL) { return NULL; } newsh->free = newlen - len; return newsh->buf; } -/* Reallocate the sds string so that it has no free space at the end. The +/* Reallocate the yasl 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. * - * After the call, the passed sds string is no longer valid and all the + * After the call, the passed yasl string is no longer valid and all the * references must be substituted with the new pointer returned by the call. */ -sds sdsRemoveFreeSpace(sds s) { - struct sdshdr *sh; +yastr yaslRemoveFreeSpace(yastr s) { + struct yastrhdr *sh; - sh = sdsheader(s); - sh = realloc(sh, sizeof(struct sdshdr) + sh->len + 1); + sh = yaslheader(s); + sh = realloc(sh, sizeof(struct yastrhdr) + sh->len + 1); sh->free = 0; return sh->buf; } @@ -764,14 +764,14 @@ sds sdsRemoveFreeSpace(sds s) { /// Low-level helper functions -/* Helper function for sdssplitargs() that returns non zero if 'c' +/* Helper function for yaslsplitargs() that returns non zero if 'c' * is a valid hex digit. */ int is_hex_digit(char c) { return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'); } -/* Helper function for sdssplitargs() that converts a hex digit into an +/* Helper function for yaslsplitargs() that converts a hex digit into an * integer from 0 to 15 */ int hex_digit_to_int(char c) { switch(c) { diff --git a/src/yasl.h b/src/yasl.h new file mode 100644 index 0000000..90860bc --- /dev/null +++ b/src/yasl.h @@ -0,0 +1,131 @@ +/* yasl, Yet Another String Library for C + * + * 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. + * + * 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 YASL_H +#define YASL_H + +#define YASL_MAX_PREALLOC (1024*1024) + +#include <stdarg.h> +#include <stddef.h> +#include <sys/types.h> + +typedef char *yastr; + +struct yastrhdr { + size_t len; + size_t free; + char buf[]; +}; + + +/** + * User API function prototypes + */ + +/// Initialization +yastr yaslnew(const void *init, size_t initlen); +yastr yasldup(const yastr s); +yastr yaslempty(void); +yastr yaslfromlonglong(long long value); + + +/// Querying +int yaslcmp(const yastr s1, const yastr s2); + + +/// Modification +void yaslclear(yastr s); +yastr yaslgrowzero(yastr s, size_t len); +yastr yaslcpylen(yastr s, const char *t, size_t len); +yastr yaslcpy(yastr s, const char *t); +yastr yasljoin(char **argv, int argc, char *sep, size_t seplen); +yastr yasljoinyasl(yastr *argv, int argc, const char *sep, size_t seplen); +yastr yaslmapchars(yastr s, const char *from, const char *to, size_t setlen); +void yaslrange(yastr s, ptrdiff_t start, ptrdiff_t end); +void yasltolower(yastr s); +void yasltoupper(yastr s); +void yasltrim(yastr s, const char *cset); +void yaslupdatelen(yastr s); +yastr *yaslsplitargs(const char *line, int *argc); +yastr *yaslsplitlen(const char *s, size_t len, const char *sep, size_t seplen, size_t *count); + +// Concatenation +yastr yaslcat(yastr s, const char *t); +yastr yaslcatyasl(yastr s, const yastr t); +yastr yaslcatlen(yastr s, const void *t, size_t len); +yastr yaslcatrepr(yastr s, const char *p, size_t len); +yastr yaslcatvprintf(yastr s, const char *fmt, va_list ap); +#ifdef __GNUC__ +yastr yaslcatprintf(yastr s, const char *fmt, ...) + __attribute__((format(printf, 2, 3))); +#else +yastr yaslcatprintf(yastr s, const char *fmt, ...); +#endif + + +/// Freeing +void yaslfree(yastr s); +void yaslfreesplitres(yastr *tokens, size_t count); + + +/// Low-level API function prototypes +size_t yaslAllocSize(yastr s); +void yaslIncrLen(yastr s, size_t incr); +yastr yaslMakeRoomFor(yastr s, size_t addlen); +yastr yaslRemoveFreeSpace(yastr s); + + +/// Low-level helper functions +int is_hex_digit(char c); +int hex_digit_to_int(char c); + + +/** + * Inline functions + */ + +static inline struct yastrhdr *yaslheader(const yastr s) { + /* The yastrhdr pointer has a different alignment than the original char + * pointer, so cast it through a void pointer to silence the warning. */ + return (void *)(s - (sizeof (struct yastrhdr))); +} + +static inline yastr yaslauto(const char *s) { + return yaslnew(s, s ? strlen(s) : 0); +} + +static inline size_t yaslavail(const yastr s) { + return yaslheader(s)->free; +} + +static inline size_t yasllen(const yastr s) { + return yaslheader(s)->len; +} + + +#endif |