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-rw-r--r--py/mpconfig.h5
-rw-r--r--py/objstr.c21
-rw-r--r--py/objstr.h1
-rw-r--r--py/objstrunicode.c1
4 files changed, 28 insertions, 0 deletions
diff --git a/py/mpconfig.h b/py/mpconfig.h
index a6b4a4ab0d..92f17724f4 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -589,6 +589,11 @@ typedef double mp_float_t;
#define MICROPY_PY_BUILTINS_STR_UNICODE (0)
#endif
+// Whether str.center() method provided
+#ifndef MICROPY_PY_BUILTINS_STR_CENTER
+#define MICROPY_PY_BUILTINS_STR_CENTER (0)
+#endif
+
// Whether str.splitlines() method provided
#ifndef MICROPY_PY_BUILTINS_STR_SPLITLINES
#define MICROPY_PY_BUILTINS_STR_SPLITLINES (0)
diff --git a/py/objstr.c b/py/objstr.c
index aa10294f53..ded4498130 100644
--- a/py/objstr.c
+++ b/py/objstr.c
@@ -817,6 +817,23 @@ STATIC mp_obj_t str_rstrip(size_t n_args, const mp_obj_t *args) {
return str_uni_strip(RSTRIP, n_args, args);
}
+#if MICROPY_PY_BUILTINS_STR_CENTER
+STATIC mp_obj_t str_center(mp_obj_t str_in, mp_obj_t width_in) {
+ GET_STR_DATA_LEN(str_in, str, str_len);
+ int width = mp_obj_get_int(width_in);
+ if (str_len >= width) {
+ return str_in;
+ }
+
+ vstr_t vstr;
+ vstr_init_len(&vstr, width);
+ memset(vstr.buf, ' ', width);
+ int left = (width - str_len) / 2;
+ memcpy(vstr.buf + left, str, str_len);
+ return mp_obj_new_str_from_vstr(mp_obj_get_type(str_in), &vstr);
+}
+#endif
+
// Takes an int arg, but only parses unsigned numbers, and only changes
// *num if at least one digit was parsed.
STATIC const char *str_to_int(const char *str, const char *top, int *num) {
@@ -1846,6 +1863,9 @@ MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_split_obj, 1, 3, mp_obj_str_split);
#if MICROPY_PY_BUILTINS_STR_SPLITLINES
MP_DEFINE_CONST_FUN_OBJ_KW(str_splitlines_obj, 1, str_splitlines);
#endif
+#if MICROPY_PY_BUILTINS_STR_CENTER
+MP_DEFINE_CONST_FUN_OBJ_2(str_center_obj, str_center);
+#endif
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_rsplit_obj, 1, 3, str_rsplit);
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_startswith_obj, 2, 3, str_startswith);
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_endswith_obj, 2, 3, str_endswith);
@@ -1897,6 +1917,7 @@ STATIC const mp_rom_map_elem_t str8_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_count), MP_ROM_PTR(&str_count_obj) },
{ MP_ROM_QSTR(MP_QSTR_partition), MP_ROM_PTR(&str_partition_obj) },
{ MP_ROM_QSTR(MP_QSTR_rpartition), MP_ROM_PTR(&str_rpartition_obj) },
+ { MP_ROM_QSTR(MP_QSTR_center), MP_ROM_PTR(&str_center_obj) },
{ MP_ROM_QSTR(MP_QSTR_lower), MP_ROM_PTR(&str_lower_obj) },
{ MP_ROM_QSTR(MP_QSTR_upper), MP_ROM_PTR(&str_upper_obj) },
{ MP_ROM_QSTR(MP_QSTR_isspace), MP_ROM_PTR(&str_isspace_obj) },
diff --git a/py/objstr.h b/py/objstr.h
index 6b8ad97ec2..07929156cb 100644
--- a/py/objstr.h
+++ b/py/objstr.h
@@ -92,6 +92,7 @@ MP_DECLARE_CONST_FUN_OBJ(str_replace_obj);
MP_DECLARE_CONST_FUN_OBJ(str_count_obj);
MP_DECLARE_CONST_FUN_OBJ(str_partition_obj);
MP_DECLARE_CONST_FUN_OBJ(str_rpartition_obj);
+MP_DECLARE_CONST_FUN_OBJ(str_center_obj);
MP_DECLARE_CONST_FUN_OBJ(str_lower_obj);
MP_DECLARE_CONST_FUN_OBJ(str_upper_obj);
MP_DECLARE_CONST_FUN_OBJ(str_isspace_obj);
diff --git a/py/objstrunicode.c b/py/objstrunicode.c
index 8099e20a0e..5e14da451d 100644
--- a/py/objstrunicode.c
+++ b/py/objstrunicode.c
@@ -238,6 +238,7 @@ STATIC const mp_rom_map_elem_t struni_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_count), MP_ROM_PTR(&str_count_obj) },
{ MP_ROM_QSTR(MP_QSTR_partition), MP_ROM_PTR(&str_partition_obj) },
{ MP_ROM_QSTR(MP_QSTR_rpartition), MP_ROM_PTR(&str_rpartition_obj) },
+ { MP_ROM_QSTR(MP_QSTR_center), MP_ROM_PTR(&str_center_obj) },
{ MP_ROM_QSTR(MP_QSTR_lower), MP_ROM_PTR(&str_lower_obj) },
{ MP_ROM_QSTR(MP_QSTR_upper), MP_ROM_PTR(&str_upper_obj) },
{ MP_ROM_QSTR(MP_QSTR_isspace), MP_ROM_PTR(&str_isspace_obj) },