g_string_new ()

GString *
g_string_new (const gchar *init);

Creates a new GString, initialized with the given string.

g_string_new_len ()

GString *
g_string_new_len (const gchar *init,
                  gssize len);

Creates a new GString with len bytes of the init buffer. Because a length is provided, init need not be nul-terminated, and can contain embedded nul bytes.

Since this function does not stop at nul bytes, it is the caller's responsibility to ensure that init has at least len addressable bytes.

g_string_sized_new ()

GString *
g_string_sized_new (gsize dfl_size);

Creates a new GString, with enough space for dfl_size bytes. This is useful if you are going to add a lot of text to the string and don't want it to be reallocated too often.

g_string_assign ()

GString *
g_string_assign (GString *string,
                 const gchar *rval);

Copies the bytes from a string into a GString, destroying any previous contents. It is rather like the standard strcpy() function, except that you do not have to worry about having enough space to copy the string.

g_string_vprintf ()

void
g_string_vprintf (GString *string,
                  const gchar *format,
                  va_list args);

Writes a formatted string into a GString. This function is similar to g_string_printf() except that the arguments to the format string are passed as a va_list.

Since 2.14

g_string_append_vprintf ()

void
g_string_append_vprintf (GString *string,
                         const gchar *format,
                         va_list args);

Appends a formatted string onto the end of a GString. This function is similar to g_string_append_printf() except that the arguments to the format string are passed as a va_list.

Since 2.14

g_string_printf ()

void
g_string_printf (GString *string,
                 const gchar *format,
                 ...);

Writes a formatted string into a GString. This is similar to the standard sprintf() function, except that the GString buffer automatically expands to contain the results. The previous contents of the GString are destroyed.

g_string_append_printf ()

void
g_string_append_printf (GString *string,
                        const gchar *format,
                        ...);

Appends a formatted string onto the end of a GString. This function is similar to g_string_printf() except that the text is appended to the GString.

g_string_append ()

GString *
g_string_append (GString *string,
                 const gchar *val);

Adds a string onto the end of a GString, expanding it if necessary.

g_string_append_c ()

GString *
g_string_append_c (GString *string,
                   gchar c);

Adds a byte onto the end of a GString, expanding it if necessary.

g_string_append_unichar ()

GString *
g_string_append_unichar (GString *string,
                         gunichar wc);

Converts a Unicode character into UTF-8, and appends it to the string.

g_string_append_len ()

GString *
g_string_append_len (GString *string,
                     const gchar *val,
                     gssize len);

Appends len bytes of val to string . Because len is provided, val may contain embedded nuls and need not be nul-terminated.

Since this function does not stop at nul bytes, it is the caller's responsibility to ensure that val has at least len addressable bytes.

g_string_append_uri_escaped ()

GString *
g_string_append_uri_escaped (GString *string,
                             const gchar *unescaped,
                             const gchar *reserved_chars_allowed,
                             gboolean allow_utf8);

Appends unescaped to string , escaped any characters that are reserved in URIs using URI-style escape sequences.

Since 2.16

g_string_prepend ()

GString *
g_string_prepend (GString *string,
                  const gchar *val);

Adds a string on to the start of a GString, expanding it if necessary.

g_string_prepend_c ()

GString *
g_string_prepend_c (GString *string,
                    gchar c);

Adds a byte onto the start of a GString, expanding it if necessary.

g_string_prepend_unichar ()

GString *
g_string_prepend_unichar (GString *string,
                          gunichar wc);

Converts a Unicode character into UTF-8, and prepends it to the string.

g_string_prepend_len ()

GString *
g_string_prepend_len (GString *string,
                      const gchar *val,
                      gssize len);

Prepends len bytes of val to string . Because len is provided, val may contain embedded nuls and need not be nul-terminated.

Since this function does not stop at nul bytes, it is the caller's responsibility to ensure that val has at least len addressable bytes.

g_string_insert ()

GString *
g_string_insert (GString *string,
                 gssize pos,
                 const gchar *val);

Inserts a copy of a string into a GString, expanding it if necessary.

g_string_insert_c ()

GString *
g_string_insert_c (GString *string,
                   gssize pos,
                   gchar c);

Inserts a byte into a GString, expanding it if necessary.

g_string_insert_unichar ()

GString *
g_string_insert_unichar (GString *string,
                         gssize pos,
                         gunichar wc);

Converts a Unicode character into UTF-8, and insert it into the string at the given position.

g_string_insert_len ()

GString *
g_string_insert_len (GString *string,
                     gssize pos,
                     const gchar *val,
                     gssize len);

Inserts len bytes of val into string at pos . Because len is provided, val may contain embedded nuls and need not be nul-terminated. If pos is -1, bytes are inserted at the end of the string.

Since this function does not stop at nul bytes, it is the caller's responsibility to ensure that val has at least len addressable bytes.

g_string_overwrite ()

GString *
g_string_overwrite (GString *string,
                    gsize pos,
                    const gchar *val);

Overwrites part of a string, lengthening it if necessary.

Since 2.14

g_string_overwrite_len ()

GString *
g_string_overwrite_len (GString *string,
                        gsize pos,
                        const gchar *val,
                        gssize len);

Overwrites part of a string, lengthening it if necessary. This function will work with embedded nuls.

Since 2.14

g_string_erase ()

GString *
g_string_erase (GString *string,
                gssize pos,
                gssize len);

Removes len bytes from a GString, starting at position pos . The rest of the GString is shifted down to fill the gap.

g_string_truncate ()

GString *
g_string_truncate (GString *string,
                   gsize len);

Cuts off the end of the GString, leaving the first len bytes.

g_string_set_size ()

GString *
g_string_set_size (GString *string,
                   gsize len);

Sets the length of a GString. If the length is less than the current length, the string will be truncated. If the length is greater than the current length, the contents of the newly added area are undefined. (However, as always, string->str[string->len] will be a nul byte.)

g_string_free ()

gchar *
g_string_free (GString *string,
               gboolean free_segment);

Frees the memory allocated for the GString. If free_segment is TRUE it also frees the character data. If it's FALSE, the caller gains ownership of the buffer and must free it after use with g_free().

g_string_free_to_bytes ()

GBytes *
g_string_free_to_bytes (GString *string);

Transfers ownership of the contents of string to a newly allocated GBytes. The GString structure itself is deallocated, and it is therefore invalid to use string after invoking this function.

Note that while GString ensures that its buffer always has a trailing nul character (not reflected in its "len"), the returned GBytes does not include this extra nul; i.e. it has length exactly equal to the "len" member.

Since 2.34

g_string_up ()

GString *
g_string_up (GString *string);

Converts a GString to uppercase.

g_string_down ()

GString *
g_string_down (GString *string);

Converts a GString to lowercase.

g_string_hash ()

guint
g_string_hash (const GString *str);

Creates a hash code for str ; for use with GHashTable.

g_string_equal ()

gboolean
g_string_equal (const GString *v,
                const GString *v2);

Compares two strings for equality, returning TRUE if they are equal. For use with GHashTable.

struct GString

struct GString {
  gchar  *str;
  gsize len;
  gsize allocated_len;
};

The GString struct contains the public fields of a GString.

g_string_sprintf

#define             g_string_sprintf

Writes a formatted string into a GString. This is similar to the standard sprintf() function, except that the GString buffer automatically expands to contain the results. The previous contents of the GString are destroyed.

g_string_sprintfa

#define             g_string_sprintfa

Appends a formatted string onto the end of a GString. This function is similar to g_string_sprintf() except that the text is appended to the GString.