Add methods for z_owned_strings_array_t creation:

include/zenoh-pico/api/types.h

@@ -477,13 +477,19 @@ _Z_OWNED_TYPE_VALUE(_z_reply_t, reply)
  *
  * Operations over :c:type:`z_loaned_string_array_t` must be done using the provided functions:
  *
+ *   - :c:func:`z_string_array_new`
+ *   - :c:func:`z_string_array_push_by_alias`
+ *   - :c:func:`z_string_array_push_by_copy`
  *   - :c:func:`z_string_array_get`
  *   - :c:func:`z_string_array_len`
  *   - :c:func:`z_str_array_array_is_empty`
  */
 _Z_OWNED_TYPE_VALUE(_z_string_svec_t, string_array)
 _Z_VIEW_TYPE(_z_string_svec_t, string_array)
 
+void z_string_array_new(z_owned_string_array_t *a);
+size_t z_string_array_push_by_alias(z_loaned_string_array_t *a, const z_loaned_string_t *value);
+size_t z_string_array_push_by_copy(z_loaned_string_array_t *a, const z_loaned_string_t *value);
 const z_loaned_string_t *z_string_array_get(const z_loaned_string_array_t *a, size_t k);
 size_t z_string_array_len(const z_loaned_string_array_t *a);
 _Bool z_string_array_is_empty(const z_loaned_string_array_t *a);

src/api/api.c

@@ -23,6 +23,7 @@
 #include "zenoh-pico/api/primitives.h"
 #include "zenoh-pico/api/types.h"
 #include "zenoh-pico/collections/slice.h"
+#include "zenoh-pico/collections/string.h"
 #include "zenoh-pico/config.h"
 #include "zenoh-pico/net/config.h"
 #include "zenoh-pico/net/filtering.h"
@@ -58,6 +59,25 @@ int8_t z_view_string_from_substr(z_view_string_t *str, const char *value, size_t
     return _Z_RES_OK;
 }
 
+_z_string_svec_t _z_string_array_null(void) { return _z_string_svec_make(0); }
+
+void z_string_array_new(z_owned_string_array_t *a) { a->_val = _z_string_array_null(); }
+
+size_t z_string_array_push_by_alias(z_loaned_string_array_t *a, const z_loaned_string_t *value) {
+    _z_string_t str = _z_string_alias(value);
+    _z_string_svec_append(a, &str);
+
+    return _z_string_svec_len(a);
+}
+
+size_t z_string_array_push_by_copy(z_loaned_string_array_t *a, const z_loaned_string_t *value) {
+    _z_string_t str;
+    _z_string_copy(&str, value);
+    _z_string_svec_append(a, &str);
+
+    return _z_string_svec_len(a);
+}
+
 const z_loaned_string_t *z_string_array_get(const z_loaned_string_array_t *a, size_t k) {
     return _z_string_svec_get(a, k);
 }
@@ -799,7 +819,6 @@ int8_t _z_string_array_copy(_z_string_svec_t *dst, const _z_string_svec_t *src)
     _z_string_svec_copy(dst, src);
     return dst->_len == src->_len ? _Z_RES_OK : _Z_ERR_SYSTEM_OUT_OF_MEMORY;
 }
-_z_string_svec_t _z_string_array_null(void) { return _z_string_svec_make(0); }
 _Z_OWNED_FUNCTIONS_VALUE_IMPL(_z_string_svec_t, string_array, _z_string_array_check, _z_string_array_null,
                               _z_string_array_copy, _z_string_svec_clear)
 _Z_OWNED_FUNCTIONS_VALUE_IMPL(_z_slice_t, slice, _z_slice_check, _z_slice_empty, _z_slice_copy, _z_slice_clear)

tests/z_data_struct_test.c

@@ -16,9 +16,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "zenoh-pico/api/primitives.h"
+#include "zenoh-pico/api/types.h"
 #include "zenoh-pico/collections/string.h"
 #include "zenoh-pico/protocol/core.h"
-#include "zenoh-pico/system/platform.h"
 #include "zenoh-pico/transport/transport.h"
 
 #undef NDEBUG
@@ -167,10 +168,76 @@ void z_slice_custom_delete_test(void) {
     assert(counter == 2);
 }
 
+void z_string_array_test(void) {
+    // create new array
+    z_owned_string_array_t a;
+    z_string_array_new(&a);
+
+    char s1[] = "string1";
+    char s2[] = "string2";
+    char s3[] = "string3";
+    char s4[] = "string4";
+
+    // add by copy
+    z_view_string_t vs1;
+    z_view_string_from_str(&vs1, s1);
+    assert(z_string_array_push_by_copy(z_string_array_loan_mut(&a), z_view_string_loan(&vs1)) == 1);
+
+    z_view_string_t vs2;
+    z_view_string_from_str(&vs2, s2);
+    assert(z_string_array_push_by_copy(z_string_array_loan_mut(&a), z_view_string_loan(&vs2)) == 2);
+
+    // add by alias
+    z_view_string_t vs3;
+    z_view_string_from_str(&vs3, s3);
+    assert(z_string_array_push_by_alias(z_string_array_loan_mut(&a), z_view_string_loan(&vs3)) == 3);
+
+    z_view_string_t vs4;
+    z_view_string_from_str(&vs4, s4);
+    assert(z_string_array_push_by_alias(z_string_array_loan_mut(&a), z_view_string_loan(&vs4)) == 4);
+
+    // check values
+    const z_loaned_string_t *ls1 = z_string_array_get(z_string_array_loan(&a), 0);
+    assert(strncmp(z_string_data(ls1), s1, z_string_len(ls1)) == 0);
+
+    const z_loaned_string_t *ls2 = z_string_array_get(z_string_array_loan(&a), 1);
+    assert(strncmp(z_string_data(ls2), s2, z_string_len(ls2)) == 0);
+
+    const z_loaned_string_t *ls3 = z_string_array_get(z_string_array_loan(&a), 2);
+    assert(strncmp(z_string_data(ls3), s3, z_string_len(ls3)) == 0);
+
+    const z_loaned_string_t *ls4 = z_string_array_get(z_string_array_loan(&a), 3);
+    assert(strncmp(z_string_data(ls4), s4, z_string_len(ls4)) == 0);
+
+    // modify original strings values
+    s1[0] = 'X';
+    s2[0] = 'X';
+    s3[0] = 'X';
+    s4[0] = 'X';
+
+    // values passed by copy should NOT be changed
+    ls1 = z_string_array_get(z_string_array_loan(&a), 0);
+    assert(strncmp(z_string_data(ls1), "string1", z_string_len(ls1)) == 0);
+
+    ls2 = z_string_array_get(z_string_array_loan(&a), 1);
+    assert(strncmp(z_string_data(ls2), "string2", z_string_len(ls2)) == 0);
+
+    // values passed by alias should be changed
+    ls3 = z_string_array_get(z_string_array_loan(&a), 2);
+    assert(strncmp(z_string_data(ls3), s3, z_string_len(ls3)) == 0);
+
+    ls4 = z_string_array_get(z_string_array_loan(&a), 3);
+    assert(strncmp(z_string_data(ls4), s4, z_string_len(ls4)) == 0);
+
+    // cleanup
+    z_string_array_drop(z_string_array_move(&a));
+}
+
 int main(void) {
     entry_list_test();
     str_vec_list_intmap_test();
     z_slice_custom_delete_test();
+    z_string_array_test();
 
     return 0;
 }