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Provide helper functions calloc_str and realloc_strcat to create and extend arbitrary length arrays based on string length.

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This commit is contained in:
Con Kolivas 2012-11-29 12:48:17 +11:00
parent cffc21db28
commit ee8609d9a9
2 changed files with 43 additions and 0 deletions
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41
util.c
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@ -1477,3 +1477,44 @@ void dev_error(struct cgpu_info *dev, enum dev_reason reason)
}
}
/* Calloc enough memory to fit string s, rounding up to 4 byte alignment */
void *calloc_str(char *s)
{
size_t len = strlen(s);
void *ptr = NULL;
if (!len)
goto out;
len += 1;
if (len % 4)
len += 4 - (len % 4);
ptr = calloc(len, 1);
if (unlikely(!ptr))
quit(1, "Failed to calloc ptr in calloc_str");
out:
return ptr;
}
/* Realloc an existing string to fit an extra string s, appending s to it. */
void *realloc_strcat(char *ptr, char *s)
{
size_t old = strlen(ptr), len = strlen(s);
char *ret;
if (!len)
return ptr;
len += old + 1;
if (len % 4)
len += 4 - (len % 4);
ret = malloc(len);
if (unlikely(!ret))
quit(1, "Failed to malloc in realloc_strcat");
sprintf(ret, "%s%s", ptr, s);
free(ptr);
return ret;
}

2
util.h
View File

@ -52,5 +52,7 @@ bool extract_sockaddr(struct pool *pool, char *url);
bool auth_stratum(struct pool *pool);
bool initiate_stratum(struct pool *pool);
void dev_error(struct cgpu_info *dev, enum dev_reason reason);
void *calloc_str(char *s);
void *realloc_strcat(char *ptr, char *s);
#endif /* __UTIL_H__ */