* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
* is made to see if the character found is actually valid other than
* it starts with an appropriate byte.
*
- * Return value: a pointer to the found character or %NULL.
- **/
+ * Returns: a pointer to the found character or %NULL.
+ */
gchar *
g_utf8_find_prev_char (const char *str,
const char *p)
* g_utf8_find_next_char:
* @p: a pointer to a position within a UTF-8 encoded string
* @end: a pointer to the byte following the end of the string,
- * or %NULL to indicate that the string is nul-terminated.
+ * or %NULL to indicate that the string is nul-terminated
*
* Finds the start of the next UTF-8 character in the string after @p.
*
* is made to see if the character found is actually valid other than
* it starts with an appropriate byte.
*
- * Return value: a pointer to the found character or %NULL
- **/
+ * Returns: a pointer to the found character or %NULL
+ */
gchar *
g_utf8_find_next_char (const gchar *p,
const gchar *end)
* it starts with an appropriate byte. If @p might be the first
* character of the string, you must use g_utf8_find_prev_char() instead.
*
- * Return value: a pointer to the found character.
- **/
+ * Returns: a pointer to the found character
+ */
gchar *
g_utf8_prev_char (const gchar *p)
{
return (gchar *)p;
}
}
-
+
/**
* g_utf8_strlen:
* @p: pointer to the start of a UTF-8 encoded string
* the terminating nul character. If the @max'th byte falls in the
* middle of a character, the last (partial) character is not counted.
*
- * Return value: the length of the string in characters
- **/
+ * Returns: the length of the string in characters
+ */
glong
g_utf8_strlen (const gchar *p,
gssize max)
* @end_pos: another character offset within @str
*
* Copies a substring out of a UTF-8 encoded string.
- * The substring will contain @end_pos - @start_pos
- * characters.
+ * The substring will contain @end_pos - @start_pos characters.
*
* Returns: a newly allocated copy of the requested
* substring. Free with g_free() when no longer needed.
* @p: a pointer to Unicode character encoded as UTF-8
*
* Converts a sequence of bytes encoded as UTF-8 to a Unicode character.
- * If @p does not point to a valid UTF-8 encoded character, results are
- * undefined. If you are not sure that the bytes are complete
+ *
+ * If @p does not point to a valid UTF-8 encoded character, results
+ * are undefined. If you are not sure that the bytes are complete
* valid Unicode characters, you should use g_utf8_get_char_validated()
* instead.
*
- * Return value: the resulting character
- **/
+ * Returns: the resulting character
+ */
gunichar
g_utf8_get_char (const gchar *p)
{
* instead of forwards if @offset is in the last fourth of the string,
* since moving forward is about 3 times faster than moving backward.
*
- * <note><para>
- * This function doesn't abort when reaching the end of @str. Therefore
- * you should be sure that @offset is within string boundaries before
- * calling that function. Call g_utf8_strlen() when unsure.
- *
+ * Note that this function doesn't abort when reaching the end of @str.
+ * Therefore you should be sure that @offset is within string boundaries
+ * before calling that function. Call g_utf8_strlen() when unsure.
* This limitation exists as this function is called frequently during
* text rendering and therefore has to be as fast as possible.
- * </para></note>
*
- * Return value: the resulting pointer
- **/
+ * Returns: the resulting pointer
+ */
gchar *
g_utf8_offset_to_pointer (const gchar *str,
glong offset)
* Since 2.10, this function allows @pos to be before @str, and returns
* a negative offset in this case.
*
- * Return value: the resulting character offset
- **/
+ * Returns: the resulting character offset
+ */
glong
g_utf8_pointer_to_offset (const gchar *str,
const gchar *pos)
* @src: UTF-8 encoded string
* @n: character count
*
- * Like the standard C strncpy() function, but
- * copies a given number of characters instead of a given number of
- * bytes. The @src string must be valid UTF-8 encoded text.
- * (Use g_utf8_validate() on all text before trying to use UTF-8
- * utility functions with it.)
+ * Like the standard C strncpy() function, but copies a given number
+ * of characters instead of a given number of bytes. The @src string
+ * must be valid UTF-8 encoded text. (Use g_utf8_validate() on all
+ * text before trying to use UTF-8 utility functions with it.)
*
- * Return value: @dest
- **/
+ * Returns: @dest
+ */
gchar *
g_utf8_strncpy (gchar *dest,
const gchar *src,
*
* Converts a single character to UTF-8.
*
- * Return value: number of bytes written
- **/
+ * Returns: number of bytes written
+ */
int
g_unichar_to_utf8 (gunichar c,
gchar *outbuf)
* in a UTF-8 encoded string, while limiting the search to @len bytes.
* If @len is -1, allow unbounded search.
*
- * Return value: %NULL if the string does not contain the character,
- * otherwise, a pointer to the start of the leftmost occurrence of
- * the character in the string.
- **/
+ * Returns: %NULL if the string does not contain the character,
+ * otherwise, a pointer to the start of the leftmost occurrence
+ * of the character in the string.
+ */
gchar *
g_utf8_strchr (const char *p,
gssize len,
* in a UTF-8 encoded string, while limiting the search to @len bytes.
* If @len is -1, allow unbounded search.
*
- * Return value: %NULL if the string does not contain the character,
- * otherwise, a pointer to the start of the rightmost occurrence of the
- * character in the string.
- **/
+ * Returns: %NULL if the string does not contain the character,
+ * otherwise, a pointer to the start of the rightmost occurrence
+ * of the character in the string.
+ */
gchar *
g_utf8_strrchr (const char *p,
gssize len,
* g_utf8_get_char_validated:
* @p: a pointer to Unicode character encoded as UTF-8
* @max_len: the maximum number of bytes to read, or -1, for no maximum or
- * if @p is nul-terminated
+ * if @p is nul-terminated
*
* Convert a sequence of bytes encoded as UTF-8 to a Unicode character.
* This function checks for incomplete characters, for invalid characters
* such as characters that are out of the range of Unicode, and for
* overlong encodings of valid characters.
*
- * Return value: the resulting character. If @p points to a partial
- * sequence at the end of a string that could begin a valid
- * character (or if @max_len is zero), returns (gunichar)-2;
- * otherwise, if @p does not point to a valid UTF-8 encoded
- * Unicode character, returns (gunichar)-1.
- **/
+ * Returns: the resulting character. If @p points to a partial
+ * sequence at the end of a string that could begin a valid
+ * character (or if @max_len is zero), returns (gunichar)-2;
+ * otherwise, if @p does not point to a valid UTF-8 encoded
+ * Unicode character, returns (gunichar)-1.
+ */
gunichar
-g_utf8_get_char_validated (const gchar *p,
- gssize max_len)
+g_utf8_get_char_validated (const gchar *p,
+ gssize max_len)
{
gunichar result;
* g_utf8_to_ucs4_fast:
* @str: a UTF-8 encoded string
* @len: the maximum length of @str to use, in bytes. If @len < 0,
- * then the string is nul-terminated.
- * @items_written: (allow-none): location to store the number of characters in the
- * result, or %NULL.
+ * then the string is nul-terminated.
+ * @items_written: (allow-none): location to store the number of
+ * characters in the result, or %NULL.
*
* Convert a string from UTF-8 to a 32-bit fixed width
* representation as UCS-4, assuming valid UTF-8 input.
* but does no error checking on the input. A trailing 0 character
* will be added to the string after the converted text.
*
- * Return value: a pointer to a newly allocated UCS-4 string.
- * This value must be freed with g_free().
- **/
+ * Returns: a pointer to a newly allocated UCS-4 string.
+ * This value must be freed with g_free().
+ */
gunichar *
g_utf8_to_ucs4_fast (const gchar *str,
glong len,
/* It's an out-of-sequence 10xxxxxxx byte.
* Rather than making an ugly hash of this and the next byte
* and overrunning the buffer, it's more useful to treat it
- * with a replacement character */
+ * with a replacement character
+ */
result[i] = 0xfffd;
continue;
}
return result;
}
+static gpointer
+try_malloc_n (gsize n_blocks, gsize n_block_bytes, GError **error)
+{
+ gpointer ptr = g_try_malloc_n (n_blocks, n_block_bytes);
+ if (ptr == NULL)
+ g_set_error_literal (error, G_CONVERT_ERROR, G_CONVERT_ERROR_NO_MEMORY,
+ _("Failed to allocate memory"));
+ return ptr;
+}
+
/**
* g_utf8_to_ucs4:
* @str: a UTF-8 encoded string
* @len: the maximum length of @str to use, in bytes. If @len < 0,
- * then the string is nul-terminated.
+ * then the string is nul-terminated.
* @items_read: (allow-none): location to store number of bytes read, or %NULL.
- * If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
- * returned in case @str contains a trailing partial
- * character. If an error occurs then the index of the
- * invalid input is stored here.
- * @items_written: (allow-none): location to store number of characters written or %NULL.
- * The value here stored does not include the trailing 0
- * character.
+ * If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
+ * returned in case @str contains a trailing partial
+ * character. If an error occurs then the index of the
+ * invalid input is stored here.
+ * @items_written: (allow-none): location to store number of characters
+ * written or %NULL. The value here stored does not include the
+ * trailing 0 character.
* @error: location to store the error occurring, or %NULL to ignore
- * errors. Any of the errors in #GConvertError other than
- * %G_CONVERT_ERROR_NO_CONVERSION may occur.
+ * errors. Any of the errors in #GConvertError other than
+ * %G_CONVERT_ERROR_NO_CONVERSION may occur.
*
* Convert a string from UTF-8 to a 32-bit fixed width
* representation as UCS-4. A trailing 0 character will be added to the
* string after the converted text.
*
- * Return value: a pointer to a newly allocated UCS-4 string.
- * This value must be freed with g_free(). If an
- * error occurs, %NULL will be returned and
- * @error set.
- **/
+ * Returns: a pointer to a newly allocated UCS-4 string.
+ * This value must be freed with g_free(). If an error occurs,
+ * %NULL will be returned and @error set.
+ */
gunichar *
g_utf8_to_ucs4 (const gchar *str,
glong len,
in = g_utf8_next_char (in);
}
- result = g_new (gunichar, n_chars + 1);
-
+ result = try_malloc_n (n_chars + 1, sizeof (gunichar), error);
+ if (result == NULL)
+ goto err_out;
+
in = str;
for (i=0; i < n_chars; i++)
{
* g_ucs4_to_utf8:
* @str: a UCS-4 encoded string
* @len: the maximum length (number of characters) of @str to use.
- * If @len < 0, then the string is nul-terminated.
- * @items_read: (allow-none): location to store number of characters read, or %NULL.
- * @items_written: (allow-none): location to store number of bytes written or %NULL.
- * The value here stored does not include the trailing 0
- * byte.
+ * If @len < 0, then the string is nul-terminated.
+ * @items_read: (allow-none): location to store number of characters
+ * read, or %NULL.
+ * @items_written: (allow-none): location to store number of bytes
+ * written or %NULL. The value here stored does not include the
+ * trailing 0 byte.
* @error: location to store the error occurring, or %NULL to ignore
* errors. Any of the errors in #GConvertError other than
* %G_CONVERT_ERROR_NO_CONVERSION may occur.
* Convert a string from a 32-bit fixed width representation as UCS-4.
* to UTF-8. The result will be terminated with a 0 byte.
*
- * Return value: a pointer to a newly allocated UTF-8 string.
- * This value must be freed with g_free(). If an
- * error occurs, %NULL will be returned and
- * @error set. In that case, @items_read will be
- * set to the position of the first invalid input
- * character.
- **/
+ * Returns: a pointer to a newly allocated UTF-8 string.
+ * This value must be freed with g_free(). If an error occurs,
+ * %NULL will be returned and @error set. In that case, @items_read
+ * will be set to the position of the first invalid input character.
+ */
gchar *
g_ucs4_to_utf8 (const gunichar *str,
glong len,
result_length += UTF8_LENGTH (str[i]);
}
- result = g_malloc (result_length + 1);
+ result = try_malloc_n (result_length + 1, 1, error);
+ if (result == NULL)
+ goto err_out;
+
p = result;
i = 0;
/**
* g_utf16_to_utf8:
* @str: a UTF-16 encoded string
- * @len: the maximum length (number of <type>gunichar2</type>) of @str to use.
- * If @len < 0, then the string is nul-terminated.
- * @items_read: (allow-none): location to store number of words read, or %NULL.
- * If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
- * returned in case @str contains a trailing partial
- * character. If an error occurs then the index of the
- * invalid input is stored here.
- * @items_written: (allow-none): location to store number of bytes written, or %NULL.
- * The value stored here does not include the trailing
- * 0 byte.
+ * @len: the maximum length (number of #gunichar2) of @str to use.
+ * If @len < 0, then the string is nul-terminated.
+ * @items_read: (allow-none): location to store number of words read,
+ * or %NULL. If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
+ * returned in case @str contains a trailing partial character. If
+ * an error occurs then the index of the invalid input is stored here.
+ * @items_written: (allow-none): location to store number of bytes written,
+ * or %NULL. The value stored here does not include the trailing 0 byte.
* @error: location to store the error occurring, or %NULL to ignore
- * errors. Any of the errors in #GConvertError other than
- * %G_CONVERT_ERROR_NO_CONVERSION may occur.
+ * errors. Any of the errors in #GConvertError other than
+ * %G_CONVERT_ERROR_NO_CONVERSION may occur.
*
* Convert a string from UTF-16 to UTF-8. The result will be
* terminated with a 0 byte.
* be correctly interpreted as UTF-16, i.e. it doesn't contain
* things unpaired surrogates.
*
- * Return value: a pointer to a newly allocated UTF-8 string.
- * This value must be freed with g_free(). If an
- * error occurs, %NULL will be returned and
- * @error set.
+ * Returns: a pointer to a newly allocated UTF-8 string.
+ * This value must be freed with g_free(). If an error occurs,
+ * %NULL will be returned and @error set.
**/
gchar *
g_utf16_to_utf8 (const gunichar2 *str,
glong *items_written,
GError **error)
{
- /* This function and g_utf16_to_ucs4 are almost exactly identical - The lines that differ
- * are marked.
+ /* This function and g_utf16_to_ucs4 are almost exactly identical -
+ * The lines that differ are marked.
*/
const gunichar2 *in;
gchar *out;
/* At this point, everything is valid, and we just need to convert
*/
/********** DIFFERENT for UTF8/UCS4 **********/
- result = g_malloc (n_bytes + 1);
-
+ result = try_malloc_n (n_bytes + 1, 1, error);
+ if (result == NULL)
+ goto err_out;
+
high_surrogate = 0;
out = result;
in = str;
/**
* g_utf16_to_ucs4:
* @str: a UTF-16 encoded string
- * @len: the maximum length (number of <type>gunichar2</type>) of @str to use.
- * If @len < 0, then the string is nul-terminated.
- * @items_read: (allow-none): location to store number of words read, or %NULL.
- * If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
- * returned in case @str contains a trailing partial
- * character. If an error occurs then the index of the
- * invalid input is stored here.
- * @items_written: (allow-none): location to store number of characters written, or %NULL.
- * The value stored here does not include the trailing
- * 0 character.
+ * @len: the maximum length (number of #gunichar2) of @str to use.
+ * If @len < 0, then the string is nul-terminated.
+ * @items_read: (allow-none): location to store number of words read,
+ * or %NULL. If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
+ * returned in case @str contains a trailing partial character. If
+ * an error occurs then the index of the invalid input is stored here.
+ * @items_written: (allow-none): location to store number of characters
+ * written, or %NULL. The value stored here does not include the trailing
+ * 0 character.
* @error: location to store the error occurring, or %NULL to ignore
- * errors. Any of the errors in #GConvertError other than
- * %G_CONVERT_ERROR_NO_CONVERSION may occur.
+ * errors. Any of the errors in #GConvertError other than
+ * %G_CONVERT_ERROR_NO_CONVERSION may occur.
*
* Convert a string from UTF-16 to UCS-4. The result will be
* nul-terminated.
*
- * Return value: a pointer to a newly allocated UCS-4 string.
- * This value must be freed with g_free(). If an
- * error occurs, %NULL will be returned and
- * @error set.
- **/
+ * Returns: a pointer to a newly allocated UCS-4 string.
+ * This value must be freed with g_free(). If an error occurs,
+ * %NULL will be returned and @error set.
+ */
gunichar *
g_utf16_to_ucs4 (const gunichar2 *str,
glong len,
/* At this point, everything is valid, and we just need to convert
*/
/********** DIFFERENT for UTF8/UCS4 **********/
- result = g_malloc (n_bytes + 4);
-
+ result = try_malloc_n (n_bytes + 4, 1, error);
+ if (result == NULL)
+ goto err_out;
+
high_surrogate = 0;
out = result;
in = str;
* g_utf8_to_utf16:
* @str: a UTF-8 encoded string
* @len: the maximum length (number of bytes) of @str to use.
- * If @len < 0, then the string is nul-terminated.
- * @items_read: (allow-none): location to store number of bytes read, or %NULL.
- * If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
- * returned in case @str contains a trailing partial
- * character. If an error occurs then the index of the
- * invalid input is stored here.
- * @items_written: (allow-none): location to store number of <type>gunichar2</type> written,
- * or %NULL.
- * The value stored here does not include the trailing 0.
+ * If @len < 0, then the string is nul-terminated.
+ * @items_read: (allow-none): location to store number of bytes read,
+ * or %NULL. If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
+ * returned in case @str contains a trailing partial character. If
+ * an error occurs then the index of the invalid input is stored here.
+ * @items_written: (allow-none): location to store number of #gunichar2
+ * written, or %NULL. The value stored here does not include the
+ * trailing 0.
* @error: location to store the error occurring, or %NULL to ignore
- * errors. Any of the errors in #GConvertError other than
- * %G_CONVERT_ERROR_NO_CONVERSION may occur.
+ * errors. Any of the errors in #GConvertError other than
+ * %G_CONVERT_ERROR_NO_CONVERSION may occur.
*
* Convert a string from UTF-8 to UTF-16. A 0 character will be
* added to the result after the converted text.
*
- * Return value: a pointer to a newly allocated UTF-16 string.
- * This value must be freed with g_free(). If an
- * error occurs, %NULL will be returned and
- * @error set.
- **/
+ * Returns: a pointer to a newly allocated UTF-16 string.
+ * This value must be freed with g_free(). If an error occurs,
+ * %NULL will be returned and @error set.
+ */
gunichar2 *
g_utf8_to_utf16 (const gchar *str,
glong len,
in = g_utf8_next_char (in);
}
- result = g_new (gunichar2, n16 + 1);
-
+ result = try_malloc_n (n16 + 1, sizeof (gunichar2), error);
+ if (result == NULL)
+ goto err_out;
+
in = str;
for (i = 0; i < n16;)
{
* g_ucs4_to_utf16:
* @str: a UCS-4 encoded string
* @len: the maximum length (number of characters) of @str to use.
- * If @len < 0, then the string is nul-terminated.
- * @items_read: (allow-none): location to store number of bytes read, or %NULL.
- * If an error occurs then the index of the invalid input
- * is stored here.
- * @items_written: (allow-none): location to store number of <type>gunichar2</type>
- * written, or %NULL. The value stored here does not
- * include the trailing 0.
+ * If @len < 0, then the string is nul-terminated.
+ * @items_read: (allow-none): location to store number of bytes read,
+ * or %NULL. If an error occurs then the index of the invalid input
+ * is stored here.
+ * @items_written: (allow-none): location to store number of #gunichar2
+ * written, or %NULL. The value stored here does not include the
+ * trailing 0.
* @error: location to store the error occurring, or %NULL to ignore
- * errors. Any of the errors in #GConvertError other than
- * %G_CONVERT_ERROR_NO_CONVERSION may occur.
+ * errors. Any of the errors in #GConvertError other than
+ * %G_CONVERT_ERROR_NO_CONVERSION may occur.
*
* Convert a string from UCS-4 to UTF-16. A 0 character will be
* added to the result after the converted text.
*
- * Return value: a pointer to a newly allocated UTF-16 string.
- * This value must be freed with g_free(). If an
- * error occurs, %NULL will be returned and
- * @error set.
- **/
+ * Returns: a pointer to a newly allocated UTF-16 string.
+ * This value must be freed with g_free(). If an error occurs,
+ * %NULL will be returned and @error set.
+ */
gunichar2 *
g_ucs4_to_utf16 (const gunichar *str,
glong len,
i++;
}
-
- result = g_new (gunichar2, n16 + 1);
-
+
+ result = try_malloc_n (n16 + 1, sizeof (gunichar2), error);
+ if (result == NULL)
+ goto err_out;
+
for (i = 0, j = 0; j < n16; i++)
{
gunichar wc = str[i];
* being validated otherwise).
*
* Note that g_utf8_validate() returns %FALSE if @max_len is
- * positive and any of the @max_len bytes are NUL.
+ * positive and any of the @max_len bytes are nul.
*
* Returns %TRUE if all of @str was valid. Many GLib and GTK+
- * routines <emphasis>require</emphasis> valid UTF-8 as input;
- * so data read from a file or the network should be checked
- * with g_utf8_validate() before doing anything else with it.
+ * routines require valid UTF-8 as input; so data read from a file
+ * or the network should be checked with g_utf8_validate() before
+ * doing anything else with it.
*
- * Return value: %TRUE if the text was valid UTF-8
- **/
+ * Returns: %TRUE if the text was valid UTF-8
+ */
gboolean
g_utf8_validate (const char *str,
gssize max_len,
* integer values of @ch will not be valid. 0 is considered a valid
* character, though it's normally a string terminator.
*
- * Return value: %TRUE if @ch is a valid Unicode character
+ * Returns: %TRUE if @ch is a valid Unicode character
**/
gboolean
g_unichar_validate (gunichar ch)
* g_utf8_strreverse:
* @str: a UTF-8 encoded string
* @len: the maximum length of @str to use, in bytes. If @len < 0,
- * then the string is nul-terminated.
+ * then the string is nul-terminated.
*
* Reverses a UTF-8 string. @str must be valid UTF-8 encoded text.
* (Use g_utf8_validate() on all text before trying to use UTF-8
* newly-allocated memory, which should be freed with g_free() when
* no longer needed.
*
- * Returns: a newly-allocated string which is the reverse of @str.
+ * Returns: a newly-allocated string which is the reverse of @str
*
* Since: 2.2
*/
projects / platform / upstream / glib.git / blobdiff