From ea2dd6e2ce71a7ef1cf6fa07e4477791cade8e18 Mon Sep 17 00:00:00 2001
From: "Maxim [maxirmx] Samsonov" <m.samsonov@computer.org>
Date: Sun, 2 Jun 2024 01:19:59 +0300
Subject: [PATCH] Added sexp_simple_string_t methods and tests to maintain
 backwards compatibility

---
 include/sexpp/sexp.h           | 10 ++++++++++
 tests/src/primitives-tests.cpp |  8 ++++++++
 2 files changed, 18 insertions(+)

diff --git a/include/sexpp/sexp.h b/include/sexpp/sexp.h
index de0d093..c7f70f7 100644
--- a/include/sexpp/sexp.h
+++ b/include/sexpp/sexp.h
@@ -112,6 +112,11 @@ class SEXP_PUBLIC_SYMBOL sexp_simple_string_t : public std::vector<octet_t>,
         push_back((octet_t)(c & 0xFF));
         return *this;
     }
+    const sexp_simple_string_t &append(const octet_t *d, size_t ln)
+    {
+        insert(end(), d, d + ln);
+        return *this;
+    }
     // Returns length for printing simple string as a token
     size_t advanced_length_token(void) const { return size(); }
     // Returns length for printing simple string as a base64 string
@@ -143,6 +148,11 @@ class SEXP_PUBLIC_SYMBOL sexp_simple_string_t : public std::vector<octet_t>,
     }
 
     uint32_t as_unsigned() const noexcept;
+
+    std::string as_string(void) const
+    {
+        return std::string(reinterpret_cast<const char *>(data()), size());
+    }
 };
 
 inline bool operator==(const sexp_simple_string_t *left, const std::string &right) noexcept
diff --git a/tests/src/primitives-tests.cpp b/tests/src/primitives-tests.cpp
index 74222bc..8d8f5f9 100644
--- a/tests/src/primitives-tests.cpp
+++ b/tests/src/primitives-tests.cpp
@@ -412,4 +412,12 @@ TEST_F(PrimitivesTests, SimpleStringConstructors)
     EXPECT_TRUE(sss2 == "test");
 }
 
+TEST_F(PrimitivesTests, Compat_pre_0_9)
+{
+    const octet_t tss[] = {'t', 'e', 's', 't', 'b', 'a'};
+
+    sexp_simple_string_t sss;
+    sss.append(tss, 4);
+    EXPECT_TRUE(strcmp(sss.as_string().c_str(), "test") == 0);
+}
 } // namespace