forked from enlightenment/efl
useful function to join strings using separator.
SVN revision: 40010
This commit is contained in:
parent
764a5550fa
commit
5a69e7cfe5
|
@ -29,6 +29,7 @@
|
||||||
|
|
||||||
/* we need this for size_t */
|
/* we need this for size_t */
|
||||||
#include <stddef.h>
|
#include <stddef.h>
|
||||||
|
#include <string.h>
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @file Ecore_Str.h
|
* @file Ecore_Str.h
|
||||||
|
@ -59,6 +60,57 @@ EAPI int ecore_str_has_extension(const char *str, const char *ext);
|
||||||
EAPI char **ecore_str_split(const char *string, const char *delimiter,
|
EAPI char **ecore_str_split(const char *string, const char *delimiter,
|
||||||
int max_tokens);
|
int max_tokens);
|
||||||
|
|
||||||
|
EAPI size_t ecore_str_join_len(char *dst, size_t size, char sep, const char *a, size_t a_len, const char *b, size_t b_len);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Join two strings and store the result in @a dst buffer.
|
||||||
|
*
|
||||||
|
* Similar to ecore_str_join_len(), but will compute the length of @a
|
||||||
|
* and @a b using strlen().
|
||||||
|
*
|
||||||
|
* @param dst where to store the result.
|
||||||
|
* @param size byte size of dst, will write at most (size - 1)
|
||||||
|
* characters and then the '\0' (null terminator).
|
||||||
|
* @param sep separator character to use.
|
||||||
|
* @param a first string to use, before @a sep.
|
||||||
|
* @param b second string to use, after @a sep.
|
||||||
|
*
|
||||||
|
* @return the number of characters printed (not including the
|
||||||
|
* trailing '\0' used to end output to strings). Just like
|
||||||
|
* snprintf(), it will not write more than @a size bytes, thus a
|
||||||
|
* return value of @a size or more means that the output was
|
||||||
|
* truncated.
|
||||||
|
*
|
||||||
|
* @see ecore_str_join_len() and ecore_str_join_static()
|
||||||
|
*/
|
||||||
|
static inline size_t ecore_str_join(char *dst, size_t size, char sep, const char *a, const char *b)
|
||||||
|
{
|
||||||
|
return ecore_str_join_len(dst, size, sep, a, strlen(a), b, strlen(b));
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Join two static strings and store the result in static @a dst buffer.
|
||||||
|
*
|
||||||
|
* Similar to ecore_str_join_len(), but will assume string sizes are
|
||||||
|
* know using sizeof(X).
|
||||||
|
*
|
||||||
|
* @param dst where to store the result.
|
||||||
|
* @param sep separator character to use.
|
||||||
|
* @param a first string to use, before @a sep.
|
||||||
|
* @param b second string to use, after @a sep.
|
||||||
|
*
|
||||||
|
* @return the number of characters printed (not including the
|
||||||
|
* trailing '\0' used to end output to strings). Just like
|
||||||
|
* snprintf(), it will not write more than @a size bytes, thus a
|
||||||
|
* return value of @a size or more means that the output was
|
||||||
|
* truncated.
|
||||||
|
*
|
||||||
|
* @see ecore_str_join() and ecore_str_join_static()
|
||||||
|
*/
|
||||||
|
#define ecore_str_join_static(dst, sep, a, b) ecore_str_join_len(dst, sizeof(dst), sep, a, (sizeof(a) > 0) ? sizeof(a) - 1 : 0, b, (sizeof(b) > 0) ? sizeof(b) - 1 : 0)
|
||||||
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
#ifdef __cplusplus
|
||||||
}
|
}
|
||||||
#endif
|
#endif
|
||||||
|
|
|
@ -241,3 +241,62 @@ ecore_str_split(const char *str, const char *delim, int max_tokens)
|
||||||
|
|
||||||
return str_array;
|
return str_array;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Join two strings of known length and store the result in @a dst buffer.
|
||||||
|
*
|
||||||
|
* @param dst where to store the result.
|
||||||
|
* @param size byte size of dst, will write at most (size - 1)
|
||||||
|
* characters and then the '\0' (null terminator).
|
||||||
|
* @param sep separator character to use.
|
||||||
|
* @param a first string to use, before @a sep.
|
||||||
|
* @param a_len length of @a a, not including '\0' (strlen()-like)
|
||||||
|
* @param b second string to use, after @a sep.
|
||||||
|
* @param b_len length of @a b, not including '\0' (strlen()-like)
|
||||||
|
*
|
||||||
|
* @return the number of characters printed (not including the
|
||||||
|
* trailing '\0' used to end output to strings). Just like
|
||||||
|
* snprintf(), it will not write more than @a size bytes, thus a
|
||||||
|
* return value of @a size or more means that the output was
|
||||||
|
* truncated.
|
||||||
|
*
|
||||||
|
* @see ecore_str_join() and ecore_str_join_static()
|
||||||
|
*/
|
||||||
|
size_t
|
||||||
|
ecore_str_join_len(char *dst, size_t size, char sep, const char *a, size_t a_len, const char *b, size_t b_len)
|
||||||
|
{
|
||||||
|
size_t ret = a_len + b_len + 1;
|
||||||
|
size_t off;
|
||||||
|
|
||||||
|
if (size < 1) return ret;
|
||||||
|
|
||||||
|
if (size <= a_len)
|
||||||
|
{
|
||||||
|
memcpy(dst, a, size - 1);
|
||||||
|
dst[size - 1] = '\0';
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
memcpy(dst, a, a_len);
|
||||||
|
off = a_len;
|
||||||
|
|
||||||
|
if (size <= off + 1)
|
||||||
|
{
|
||||||
|
dst[size - 1] = '\0';
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
dst[off] = sep;
|
||||||
|
off++;
|
||||||
|
|
||||||
|
if (size <= off + b_len + 1)
|
||||||
|
{
|
||||||
|
memcpy(dst + off, b, size - off - 1);
|
||||||
|
dst[size - 1] = '\0';
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
memcpy(dst + off, b, b_len);
|
||||||
|
dst[off + b_len] = '\0';
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
Loading…
Reference in New Issue