Tizen Native API  5.5
Unicode String Buffer

These functions provide unicode string buffer management.

The Unicode String Buffer data type is designed to be a mutable string, allowing the appending, prepending or insertion of a string to a buffer.

Functions

Eina_UStrbufeina_ustrbuf_new (void)
 Creates a new unicode string buffer.
Eina_UStrbufeina_ustrbuf_manage_new (Eina_Unicode *str)
 Creates a new string buffer using the passed string.
Eina_UStrbufeina_ustrbuf_manage_new_length (Eina_Unicode *str, size_t length)
 Creates a new string buffer using the passed string.
void eina_ustrbuf_free (Eina_UStrbuf *buf)
 Frees a string buffer.
void eina_ustrbuf_reset (Eina_UStrbuf *buf)
 Resets a string buffer.
Eina_Bool eina_ustrbuf_append (Eina_UStrbuf *buf, const Eina_Unicode *str) 2)
 Appends a string to a buffer, reallocating as necessary.
Eina_Bool eina_ustrbuf_append_escaped (Eina_UStrbuf *buf, const Eina_Unicode *str) 2)
 Appends an escaped string to a buffer, reallocating as necessary.
Eina_Bool eina_ustrbuf_append_n (Eina_UStrbuf *buf, const Eina_Unicode *str, size_t maxlen) 2)
 Appends a string to a buffer, reallocating as necessary, limited by the given length.
Eina_Bool eina_ustrbuf_append_length (Eina_UStrbuf *buf, const Eina_Unicode *str, size_t length) 2)
 Appends a string of exact length to a buffer, reallocating as necessary.
Eina_Bool eina_ustrbuf_append_char (Eina_UStrbuf *buf, Eina_Unicode c)
 Appends a slice to a buffer, reallocating as necessary.
Eina_Bool eina_ustrbuf_insert (Eina_UStrbuf *buf, const Eina_Unicode *str, size_t pos) 2)
 Inserts a string to a buffer, reallocating as necessary.
Eina_Bool eina_ustrbuf_insert_escaped (Eina_UStrbuf *buf, const Eina_Unicode *str, size_t pos) 2)
 Inserts an escaped string to a buffer, reallocating as necessary.
Eina_Bool eina_ustrbuf_insert_n (Eina_UStrbuf *buf, const Eina_Unicode *str, size_t maxlen, size_t pos) 2)
 Inserts a string to a buffer, reallocating as necessary. Limited by maxlen.
Eina_Bool eina_ustrbuf_insert_length (Eina_UStrbuf *buf, const Eina_Unicode *str, size_t length, size_t pos) 2)
 Inserts a string of exact length to a buffer, reallocating as necessary.
Eina_Bool eina_ustrbuf_insert_char (Eina_UStrbuf *buf, Eina_Unicode c, size_t pos)
 Inserts a slice to a buffer, reallocating as necessary.
Eina_Bool eina_ustrbuf_remove (Eina_UStrbuf *buf, size_t start, size_t end)
 Removes a section of the given string buffer.
const Eina_Unicodeeina_ustrbuf_string_get (const Eina_UStrbuf *buf)
 Retrieves a pointer to the contents of a string buffer.
Eina_Unicodeeina_ustrbuf_string_steal (Eina_UStrbuf *buf)
 Steals the contents of a string buffer.
void eina_ustrbuf_string_free (Eina_UStrbuf *buf)
 Frees the contents of a string buffer but not the buffer.
size_t eina_ustrbuf_length_get (const Eina_UStrbuf *buf)
 Retrieves the length of the string buffer's content.

Typedefs

typedef struct _Eina_Strbuf Eina_UStrbuf

Defines

#define eina_ustrbuf_prepend(buf, str)   eina_ustrbuf_insert(buf, str, 0)
 Prepends a string to the given buffer.
#define eina_ustrbuf_prepend_escaped(buf, str)   eina_ustrbuf_insert_escaped(buf, str, 0)
 Prepends an escaped string to the given buffer.
#define eina_ustrbuf_prepend_n(buf, str, maxlen)   eina_ustrbuf_insert_n(buf, str, maxlen, 0)
 Prepends an escaped string to the given buffer.
#define eina_ustrbuf_prepend_length(buf, str, length)   eina_ustrbuf_insert_length(buf, str, length, 0)
 Prepends an escaped string to the given buffer.
#define eina_ustrbuf_prepend_char(buf, c)   eina_ustrbuf_insert_char(buf, c, 0)
 Prepends a unicode character to the given buffer.

Define Documentation

#define eina_ustrbuf_prepend (   buf,
  str 
)    eina_ustrbuf_insert(buf, str, 0)

Prepends a string to the given buffer.

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to prepend.
Returns:
EINA_TRUE on success, EINA_FALSE if str could not be prepended.

This macro simply calls eina_ustrbuf_insert() with position 0.

#define eina_ustrbuf_prepend_char (   buf,
 
)    eina_ustrbuf_insert_char(buf, c, 0)

Prepends a unicode character to the given buffer.

Parameters:
[in,out]bufThe string buffer.
[in]cThe Eina_Unicode character to prepend.
Returns:
EINA_TRUE on success, EINA_FALSE if c could not be prepended.

This macro is calling eina_ustrbuf_insert_Eina_Unicode() at position 0.

#define eina_ustrbuf_prepend_escaped (   buf,
  str 
)    eina_ustrbuf_insert_escaped(buf, str, 0)

Prepends an escaped string to the given buffer.

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to prepend.
Returns:
EINA_TRUE on success, EINA_FALSE if str could not be prepended.

This macro simply calls eina_ustrbuf_insert_escaped() with position 0.

#define eina_ustrbuf_prepend_length (   buf,
  str,
  length 
)    eina_ustrbuf_insert_length(buf, str, length, 0)

Prepends an escaped string to the given buffer.

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to prepend.
[in]lengthThe exact length to use.
Returns:
EINA_TRUE on success, EINA_FALSE if str could not be prepended.

This macro simply calls eina_ustrbuf_insert_length() with position 0.

#define eina_ustrbuf_prepend_n (   buf,
  str,
  maxlen 
)    eina_ustrbuf_insert_n(buf, str, maxlen, 0)

Prepends an escaped string to the given buffer.

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to prepend.
[in]maxlenThe maximum number of Eina_Unicode *s to prepend.
Returns:
EINA_TRUE on success, EINA_FALSE if could not be prepended.

This macro simply calls eina_ustrbuf_insert_n() with position 0.


Typedef Documentation

Type for a unicode string buffer.


Function Documentation

Appends a string to a buffer, reallocating as necessary.

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to append.
Returns:
EINA_TRUE on success, EINA_FALSE on failure such as if str could not be appended.

This function appends str to buf. It computes the length of str, so is slightly slower than eina_ustrbuf_append_length(). If the length is known beforehand, consider using that variant.

See also:
eina_ustrbuf_append()
eina_ustrbuf_append_length()
Since :
2.3

Appends a slice to a buffer, reallocating as necessary.

Parameters:
[in,out]bufThe string buffer.
[in]sliceThe slice to append.
Returns:
EINA_TRUE on success, EINA_FALSE if slice could not be appended.

This function appends slice to buf.

Since (EFL) :
1.19.0 Appends a character to a string buffer, reallocating as necessary.
Parameters:
[in,out]bufThe string buffer.
[in]cThe char to append.
Returns:
EINA_TRUE on success, EINA_FALSE if c could not be appended.

This function appends c to buf.

Since :
2.3

Appends an escaped string to a buffer, reallocating as necessary.

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to append.
Returns:
EINA_TRUE on success, EINA_FALSE if str could not be appended.

This function appends the escaped string str to buf.

Since :
2.3
Eina_Bool eina_ustrbuf_append_length ( Eina_UStrbuf buf,
const Eina_Unicode str,
size_t  length 
)

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

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to append.
[in]lengthThe exact length to use.
Returns:
EINA_TRUE on success, EINA_FALSE if str could not be appended.

This function appends str to buf. str must be of size at most length. It is slightly faster than eina_ustrbuf_append() as it does not compute the size of str. It is useful when dealing with strings of known size, such as eina_stringshare.

See also:
eina_stringshare_length()
eina_ustrbuf_append()
eina_ustrbuf_append_n()
Since :
2.3
Eina_Bool eina_ustrbuf_append_n ( Eina_UStrbuf buf,
const Eina_Unicode str,
size_t  maxlen 
)

Appends a string to a buffer, reallocating as necessary, limited by the given length.

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to append.
[in]maxlenThe maximum number of characters to append.
Returns:
EINA_TRUE on success, EINA_FALSE if str could not be appended.

This function appends at most maxlen characters of str to buf. It can't append more than the length of str. It computes the length of str, so is slightly slower than eina_ustrbuf_append_length(). If the length is known beforehand, consider using that variant (maxlen should then be checked so that it is greater than the size of str).

See also:
eina_ustrbuf_append()
eina_ustrbuf_append_length()
Since :
2.3

Frees a string buffer.

Parameters:
[in,out]bufThe string buffer to free.

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

Since :
2.3
Eina_Bool eina_ustrbuf_insert ( Eina_UStrbuf buf,
const Eina_Unicode str,
size_t  pos 
)

Inserts a string to a buffer, reallocating as necessary.

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to insert.
[in]posThe position to insert the string.
Returns:
EINA_TRUE on success, EINA_FALSE if str could not be inserted.

This function inserts str to buf at position pos. It computes the length of str, so is slightly slower than eina_ustrbuf_insert_length(). If the length is known beforehand, consider using that variant.

Since :
2.3
Eina_Bool eina_ustrbuf_insert_char ( Eina_UStrbuf buf,
Eina_Unicode  c,
size_t  pos 
)

Inserts a slice to a buffer, reallocating as necessary.

Parameters:
[in,out]bufThe string buffer.
[in]sliceThe slice to insert.
[in]posThe position to insert the string.
Returns:
EINA_TRUE on success, EINA_FALSE if slice could not be inserted.

This function inserts slice to buf at position pos.

Since (EFL) :
1.19.0 Inserts a character to a string buffer, reallocating as necessary.
Parameters:
[in,out]bufThe string buffer.
[in]cThe char to insert.
[in]posThe position to insert the char.
Returns:
EINA_TRUE on success, EINA_FALSE if c could not be inserted.

This function inserts c to buf at position pos.

Since :
2.3
Eina_Bool eina_ustrbuf_insert_escaped ( Eina_UStrbuf buf,
const Eina_Unicode str,
size_t  pos 
)

Inserts an escaped string to a buffer, reallocating as necessary.

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to insert.
[in]posThe position to insert the string.
Returns:
EINA_TRUE on success, EINA_FALSE if str could not be inserted.

This function inserts the escaped string str to buf at position pos.

Since :
2.3
Eina_Bool eina_ustrbuf_insert_length ( Eina_UStrbuf buf,
const Eina_Unicode str,
size_t  length,
size_t  pos 
)

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

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to insert.
[in]lengthThe exact length to use.
[in]posThe position to insert the string.
Returns:
EINA_TRUE on success, EINA_FALSE if str could not be inserted.

This function inserts str into buf. str must be no longer than length. It is slightly faster than eina_ustrbuf_insert() as it does not compute the size of str. It is useful when dealing with strings of known size, such as eina_stringshare.

See also:
eina_stringshare_length()
eina_ustrbuf_insert()
eina_ustrbuf_insert_n()
Since :
2.3
Eina_Bool eina_ustrbuf_insert_n ( Eina_UStrbuf buf,
const Eina_Unicode str,
size_t  maxlen,
size_t  pos 
)

Inserts a string to a buffer, reallocating as necessary. Limited by maxlen.

Parameters:
[in,out]bufThe string buffer.
[in]strThe string to insert.
[in]maxlenThe maximum number of chars to insert.
[in]posThe position to insert the string.
Returns:
EINA_TRUE on success, EINA_FALSE if str could not be inserted.

This function inserts str into buf at position pos, with at most maxlen bytes. The number of inserted characters cannot be greater than the length of str. It computes the length of str, so is slightly slower than eina_ustrbuf_insert_length(). If the length is known beforehand, consider using that variant (maxlen should then be checked so that it is greater than the size of str).

Since :
2.3
size_t eina_ustrbuf_length_get ( const Eina_UStrbuf buf)

Retrieves the length of the string buffer's content.

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

This function returns the length of buf.

Since :
2.3

Creates a new string buffer using the passed string.

Parameters:
[in]strThe string to manage.
Returns:
Newly allocated string buffer instance, or NULL on error.

This function creates a new unicode string buffer. The passed string is used directly as the buffer, it's effectively the inverse of eina_ustrbuf_string_steal(). The passed string must be malloc'd. To free the resources, use eina_ustrbuf_free().

See also:
eina_ustrbuf_free()
eina_ustrbuf_append()
eina_ustrbuf_string_get()
Since (EFL) :
1.1.0
Since :
2.3
Eina_UStrbuf* eina_ustrbuf_manage_new_length ( Eina_Unicode str,
size_t  length 
)

Creates a new string buffer using the passed string.

Parameters:
[in]strThe string to manage.
[in]lengthThe length of the string.
Returns:
Newly allocated string buffer instance, or NULL on error.

This function creates a new string buffer. The passed string is used directly as the buffer, it's effectively the inverse of eina_ustrbuf_string_steal(). The passed string must be malloc'd. To free the resources, use eina_ustrbuf_free().

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

Creates a new unicode string buffer.

Returns:
Newly allocated string buffer instance, or NULL on error.

This function creates a new string buffer. To free the resources, use eina_ustrbuf_free().

See also:
eina_ustrbuf_free()
eina_ustrbuf_append()
eina_ustrbuf_string_get()
Since :
2.3
Eina_Bool eina_ustrbuf_remove ( Eina_UStrbuf buf,
size_t  start,
size_t  end 
)

Removes a section of the given string buffer.

Parameters:
[in,out]bufThe string buffer to remove a slice.
[in]startThe initial (inclusive) slice position to start removing, in bytes.
[in]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.

Since :
2.3

Resets a string buffer.

Parameters:
[in,out]bufThe string buffer.

This function resets buf: the buffer len is set to 0, and the string data is set to '\0'. No memory is freed.

Since :
2.3

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

Parameters:
[in,out]bufThe string buffer.

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

Since :
2.3

Retrieves a pointer to the contents of a string buffer.

Parameters:
[in]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, calling eina_ustrbuf_append() or similar functions will make this pointer invalid.

See also:
eina_ustrbuf_string_steal()
Since :
2.3

Steals the contents of a string buffer.

Parameters:
[in]bufThe string buffer.
Returns:
The string that was contained in buf.

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_ustrbuf_string_get()
Since :
2.3