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author | Peter Eisenmann <p3732@getgoogleoff.me> | 2023-05-02 13:07:13 +0200 |
---|---|---|
committer | Philip Withnall <pwithnall@endlessos.org> | 2023-05-16 11:27:45 +0100 |
commit | afdab4f493493ab5631f6376455f34812a859030 (patch) | |
tree | 8748183de4cc8b1a493f9e307712b3b56d1ed6e9 | |
parent | 03aa8513f8591892fd5cc09b4fa068ba1bfc2667 (diff) | |
download | glib-afdab4f493493ab5631f6376455f34812a859030.tar.gz |
gstring: add g_string_new_take
Adds a GString constructor that takes over ownership of an existing,
dynamically allocated, string.
-rw-r--r-- | docs/reference/glib/glib-sections.txt.in | 1 | ||||
-rw-r--r-- | glib/gstring.c | 33 | ||||
-rw-r--r-- | glib/gstring.h | 2 | ||||
-rw-r--r-- | glib/tests/string.c | 36 |
4 files changed, 72 insertions, 0 deletions
diff --git a/docs/reference/glib/glib-sections.txt.in b/docs/reference/glib/glib-sections.txt.in index 60e87af5b..d9e7ac3d6 100644 --- a/docs/reference/glib/glib-sections.txt.in +++ b/docs/reference/glib/glib-sections.txt.in @@ -2625,6 +2625,7 @@ g_str_hash <FILE>strings</FILE> GString g_string_new +g_string_new_take g_string_new_len g_string_sized_new g_string_assign diff --git a/glib/gstring.c b/glib/gstring.c index ad6b92231..77448f2f1 100644 --- a/glib/gstring.c +++ b/glib/gstring.c @@ -156,6 +156,39 @@ g_string_new (const gchar *init) } /** + * g_string_new_take: (constructor) + * @init: (nullable) (transfer full): initial text used as the string. + * Ownership of the string is transferred to the #GString. + * Passing %NULL creates an empty string. + * + * Creates a new #GString, initialized with the given string. + * + * After this call, @init belongs to the #GString and may no longer be + * modified by the caller. The memory of @data has to be dynamically + * allocated and will eventually be freed with g_free(). + * + * Returns: (transfer full): the new #GString + */ +GString * +g_string_new_take (gchar *init) +{ + GString *string; + + if (init == NULL) + { + return g_string_new (NULL); + } + + string = g_slice_new (GString); + + string->str = init; + string->len = strlen (string->str); + string->allocated_len = string->len + 1; + + return string; +} + +/** * g_string_new_len: (constructor) * @init: initial contents of the string * @len: length of @init to use diff --git a/glib/gstring.h b/glib/gstring.h index 859668716..b4ccb34a9 100644 --- a/glib/gstring.h +++ b/glib/gstring.h @@ -51,6 +51,8 @@ struct _GString GLIB_AVAILABLE_IN_ALL GString* g_string_new (const gchar *init); +GLIB_AVAILABLE_IN_2_78 +GString* g_string_new_take (gchar *init); GLIB_AVAILABLE_IN_ALL GString* g_string_new_len (const gchar *init, gssize len); diff --git a/glib/tests/string.c b/glib/tests/string.c index a2225189f..932a311de 100644 --- a/glib/tests/string.c +++ b/glib/tests/string.c @@ -709,6 +709,40 @@ test_string_steal (void) g_free (str); } +static void +test_string_new_take (void) +{ + const char *test_str_const = "test_test"; + const char *replaced_str_const = "test__test"; + char *test_str = malloc (10 * sizeof (*test_str_const)); + GString *string; + + strcpy (test_str, test_str_const); + g_assert_cmpstr (test_str, ==, test_str_const); + + string = g_string_new_take (g_steal_pointer (&test_str)); + g_assert_null (test_str); + g_assert_nonnull (string); + + g_string_replace (string, "_", "__", 0); + g_assert_cmpstr (string->str, ==, replaced_str_const); + + test_str = g_string_free_and_steal (g_steal_pointer (&string)); + g_assert_cmpstr (test_str, ==, replaced_str_const); + + g_free (test_str); +} + +static void +test_string_new_take_null (void) +{ + GString *string = g_string_new_take (NULL); + + g_assert_cmpstr (string->str, ==, ""); + + g_string_free (g_steal_pointer (&string), TRUE); +} + int main (int argc, char *argv[]) @@ -736,6 +770,8 @@ main (int argc, g_test_add_func ("/string/test-string-to-bytes", test_string_to_bytes); g_test_add_func ("/string/test-string-replace", test_string_replace); g_test_add_func ("/string/test-string-steal", test_string_steal); + g_test_add_func ("/string/test-string-new-take", test_string_new_take); + g_test_add_func ("/string/test-string-new-take/null", test_string_new_take_null); return g_test_run(); } |