string_view: Implement string_view_to_cstr

3 files changed, 26 insertions, 13 deletions

diff --git a/string_view.c b/string_view.c
index d730627..4de1a98 100644
--- a/string_view.c
+++ b/string_view.c
@@ -19,6 +19,7 @@
 
 #include <assert.h>
 #include <stdbool.h>
+#include <stdio.h>
 #include <string.h>
 
 string_view_t
@@ -39,6 +40,12 @@ string_view_from_cstr(const char *cstr)
 }
 
 bool
+string_view_to_cstr(string_view_t *sv, char *ret)
+{
+  return sprintf(ret, "%.*s", sv->size, sv->data) < 0;
+}
+
+bool
 string_view_eq(string_view_t a, string_view_t b)
 {
   return a.size == b.size && memcmp(a.data, b.data, a.size) == 0;
diff --git a/string_view.h b/string_view.h
index 2ac6684..413cb24 100644
--- a/string_view.h
+++ b/string_view.h
@@ -32,21 +32,10 @@ string_view_t string_view_new(const char *cstr, size_t size);
 
 string_view_t string_view_from_cstr(const char *cstr);
 
+bool string_view_to_cstr(string_view_t *sv, char *ret);
+
 bool string_view_eq(string_view_t a, string_view_t b);
 
 string_view_t string_view_chop_by_delim(string_view_t *sv, char delim);
 
-/*
-bool string_view_index_of(string_view_t sv, char c, size_t *index);
-
-
-bool string_view_eqi(string_view_t a, string_view_t b);
-
-bool string_view_starts_with(string_view_t sv, string_view_t prefix);
-
-bool string_view_ends_with(string_view_t sv, string_view_t suffix);
-
-uint64_t string_view_to_u64(string_view_t sv);
-*/
-
 #endif /* STRING_VIEW_H */
diff --git a/test/string_view_test.c b/test/string_view_test.c
index a050239..7b2400c 100644
--- a/test/string_view_test.c
+++ b/test/string_view_test.c
@@ -49,6 +49,22 @@ test_from_cstr(const  MunitParameter params[],
 }
 
 static MunitResult
+test_to_cstr(const  MunitParameter params[],
+             void  *user_data_or_fixture)
+{
+  char *cstr = "hello world";
+
+  string_view_t sv = string_view_new(cstr, 5);
+
+  char actual[sv.size + 1];
+  string_view_to_cstr(&sv, actual);
+
+  assert_string_equal(actual, "hello");
+
+  return MUNIT_OK;
+}
+
+static MunitResult
 test_eq(const  MunitParameter params[],
         void  *user_data_or_fixture)
 {
@@ -101,6 +117,7 @@ test_chop_by_delim_when_has_no_delim(const  MunitParameter params[],
 static MunitTest tests[] = {
   { "/test_create_new", test_create_new, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL },
   { "/test_from_cstr", test_from_cstr, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL },
+  { "/test_to_cstr", test_to_cstr, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL },
   { "/test_eq", test_eq, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL },
   { "/test_chop_by_delim_when_has_delim", test_chop_by_delim_when_has_delim, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL },
   { "/test_chop_by_delim_when_has_no_delim", test_chop_by_delim_when_has_no_delim, NULL, NULL, MUNIT_TEST_OPTION_NONE, NULL },