Tizen Native API  5.0
Binary Buffer

These functions provide string buffers management.

The Binary Buffer data type is designed to be a mutable string, allowing to append, prepend or insert a string to a buffer.

Functions

Eina_Binbufeina_binbuf_new (void)
 Creates a new string buffer.
Eina_Binbufeina_binbuf_manage_new_length (unsigned char *str, size_t length)
 Creates a new string buffer using the passed string. The passed string is used directly as the buffer, it's somehow the opposite function of eina_binbuf_string_steal . The passed string must be malloced.
Eina_Binbufeina_binbuf_manage_new (const unsigned char *str, size_t length, Eina_Bool ro)
 Creates a new string buffer using the passed string. The passed string is used directly as the buffer, it's somehow the opposite function of eina_binbuf_string_steal .
void eina_binbuf_free (Eina_Binbuf *buf)
 Frees a string buffer.
void eina_binbuf_reset (Eina_Binbuf *buf)
 Resets a string buffer.
Eina_Bool eina_binbuf_append_length (Eina_Binbuf *buf, const unsigned char *str, size_t length)
 Appends a string of exact length to a buffer, reallocating as necessary.
Eina_Bool eina_binbuf_append_buffer (Eina_Binbuf *buf, const Eina_Binbuf *data)
 Appends an Eina_Binbuf to a buffer, reallocating as necessary.
Eina_Bool eina_binbuf_append_char (Eina_Binbuf *buf, unsigned char c)
 Appends a character to a string buffer, reallocating as necessary.
Eina_Bool eina_binbuf_insert_length (Eina_Binbuf *buf, const unsigned char *str, size_t length, size_t pos)
 Inserts a string of exact length to a buffer, reallocating as necessary.
Eina_Bool eina_binbuf_insert_char (Eina_Binbuf *buf, unsigned char c, size_t pos)
 Inserts a character to a string buffer, reallocating as necessary.
Eina_Bool eina_binbuf_remove (Eina_Binbuf *buf, size_t start, size_t end)
 Removes a slice of the given string buffer.
const unsigned char * eina_binbuf_string_get (const Eina_Binbuf *buf)
 Retrieves a pointer to the contents of a string buffer.
unsigned char * eina_binbuf_string_steal (Eina_Binbuf *buf)
 Steals the contents of a string buffer.
void eina_binbuf_string_free (Eina_Binbuf *buf)
 Frees the contents of a string buffer but not the buffer.
size_t eina_binbuf_length_get (const Eina_Binbuf *buf)
 Retrieves the length of the string buffer content.

Typedefs

typedef struct _Eina_Strbuf Eina_Binbuf

Typedef Documentation

Type for a string buffer.


Function Documentation

Appends an Eina_Binbuf to a buffer, reallocating as necessary.

Parameters:
bufThe string buffer to append to.
dataThe string buffer to append.
Returns:
EINA_TRUE on success, EINA_FALSE on failure.

This function appends data to buf. data must be allocated and different from NULL. It is slightly faster than eina_binbuf_append() as it does not compute the size of str. If buf can't append it, EINA_FALSE is returned, otherwise EINA_TRUE is returned.

See also:
eina_binbuf_append()
eina_binbuf_append_n()
eina_binbuf_append_length()
Since (EFL) :
1.9.0
Since :
3.0
Eina_Bool eina_binbuf_append_char ( Eina_Binbuf buf,
unsigned char  c 
)

Appends a character to a string buffer, reallocating as necessary.

Parameters:
bufThe string buffer to append to.
cThe char to append.
Returns:
EINA_TRUE on success, EINA_FALSE on failure.

This function inserts c to buf. If it can not insert it, EINA_FALSE is returned, otherwise EINA_TRUE is returned.

Since :
2.3
Eina_Bool eina_binbuf_append_length ( Eina_Binbuf buf,
const unsigned char *  str,
size_t  length 
)

Appends a string of exact length to a buffer, reallocating as necessary.

Parameters:
bufThe string buffer to append to.
strThe string to append.
lengthThe exact length to use.
Returns:
EINA_TRUE on success, EINA_FALSE on failure.

This function appends str to buf. str must be of size at most length. It is slightly faster than eina_binbuf_append() as it does not compute the size of str. It is useful when dealing with strings of known size, such as eina_strngshare. If buf can't append it, EINA_FALSE is returned, otherwise EINA_TRUE is returned.

See also:
eina_stringshare_length()
eina_binbuf_append()
eina_binbuf_append_n()
Since :
2.3
void eina_binbuf_free ( Eina_Binbuf buf)

Frees a string buffer.

Parameters:
bufThe string buffer to free.

This function frees the memory of buf. buf must have been created by eina_binbuf_new().

Since :
2.3
Eina_Bool eina_binbuf_insert_char ( Eina_Binbuf buf,
unsigned char  c,
size_t  pos 
)

Inserts a character to a string buffer, reallocating as necessary.

Parameters:
bufThe string buffer to insert to.
cThe char to insert.
posThe position to insert the char.
Returns:
EINA_TRUE on success, EINA_FALSE on failure.

This function inserts c to buf at position pos. If buf can't append it, EINA_FALSE is returned, otherwise EINA_TRUE is returned.

Since :
2.3
Eina_Bool eina_binbuf_insert_length ( Eina_Binbuf buf,
const unsigned char *  str,
size_t  length,
size_t  pos 
)

Inserts a string of exact length to a buffer, reallocating as necessary.

Parameters:
bufThe string buffer to insert to.
strThe string to insert.
lengthThe exact length to use.
posThe position to insert the string.
Returns:
EINA_TRUE on success, EINA_FALSE on failure.

This function inserts str to buf. str must be of size at most length. It is slightly faster than eina_binbuf_insert() as it does not compute the size of str. It is useful when dealing with strings of known size, such as eina_strngshare. If buf can't insert it, EINA_FALSE is returned, otherwise EINA_TRUE is returned.

See also:
eina_stringshare_length()
eina_binbuf_insert()
eina_binbuf_insert_n()
Since :
2.3
size_t eina_binbuf_length_get ( const Eina_Binbuf buf)

Retrieves the length of the string buffer content.

Parameters:
bufThe string buffer.
Returns:
The current length of the string, in bytes.

This function returns the length of buf.

Since :
2.3
Eina_Binbuf* eina_binbuf_manage_new ( const unsigned char *  str,
size_t  length,
Eina_Bool  ro 
)

Creates a new string buffer using the passed string. The passed string is used directly as the buffer, it's somehow the opposite function of eina_binbuf_string_steal .

Parameters:
strThe string to start from.
lengthThe length of the string.
roThe passed string will not be touched if set to EINA_TRUE.
Returns:
Newly allocated string buffer instance.

This function creates a new string buffer. On error, NULL is returned. To free the resources, use eina_binbuf_free(). It will not touch the buffer if ro is set to EINA_TRUE, but it will also not copy it. If ro is set to EINA_TRUE any change operation will create a fresh new memory, copy old data there and starting modifying that one.

See also:
eina_binbuf_manage_new()
eina_binbuf_manage_new_length()
eina_binbuf_manage_read_only_new_length()
Since (EFL) :
1.14.0
Since :
3.0
Eina_Binbuf* eina_binbuf_manage_new_length ( unsigned char *  str,
size_t  length 
)

Creates a new string buffer using the passed string. The passed string is used directly as the buffer, it's somehow the opposite function of eina_binbuf_string_steal . The passed string must be malloced.

Parameters:
strThe string to manage.
lengthThe length of the string.
Returns:
Newly allocated string buffer instance.

This function creates a new string buffer. On error, NULL is returned. To free the resources, use eina_binbuf_free().

See also:
eina_binbuf_manage_new()
Since (EFL) :
1.2.0
Since :
2.3

Creates a new string buffer.

Returns:
Newly allocated string buffer instance.

This function creates a new string buffer. On error, NULL is returned. To free the resources, use eina_binbuf_free().

See also:
eina_binbuf_free()
eina_binbuf_append()
eina_binbuf_string_get()
Since :
2.3
Eina_Bool eina_binbuf_remove ( Eina_Binbuf buf,
size_t  start,
size_t  end 
)

Removes a slice of the given string buffer.

Parameters:
bufThe string buffer to remove a slice.
startThe initial (inclusive) slice position to start removing, in bytes.
endThe final (non-inclusive) slice position to finish removing, in bytes.
Returns:
EINA_TRUE on success, EINA_FALSE on failure.

This function removes a slice of buf, starting at start (inclusive) and ending at end (non-inclusive). Both values are in bytes. It returns EINA_FALSE on failure, EINA_TRUE otherwise.

Since :
2.3
void eina_binbuf_reset ( Eina_Binbuf buf)

Resets a string buffer.

Parameters:
bufThe string buffer to reset.

This function reset buf: the buffer len is set to 0, and the string is set to '\0'. No memory is free'd.

Since :
2.3

Frees the contents of a string buffer but not the buffer.

Parameters:
bufThe string buffer to free the string of.

This function frees the string contained in buf without freeing buf.

Since :
2.3
const unsigned char* eina_binbuf_string_get ( const Eina_Binbuf buf)

Retrieves a pointer to the contents of a string buffer.

Parameters:
bufThe string buffer.
Returns:
The current string in the string buffer.

This function returns the string contained in buf. The returned value must not be modified and will no longer be valid if buf is modified. In other words, any eina_binbuf_append() or similar will make that pointer invalid.

See also:
eina_binbuf_string_steal()
Since :
2.3
unsigned char* eina_binbuf_string_steal ( Eina_Binbuf buf)

Steals the contents of a string buffer.

Parameters:
bufThe string buffer to steal.
Returns:
The current string in the string buffer.

This function returns the string contained in buf. buf is then initialized and does not own the returned string anymore. The caller must release the memory of the returned string by calling free().

See also:
eina_binbuf_string_get()
Since :
2.3