more buffer_view using

headers/enduro2d/utils/buffer_view.hpp

@@ -27,6 +27,9 @@ namespace e2d
         template < typename T >
         buffer_view(const vector<T>& buffer) noexcept;
 
+        template < typename Char >
+        buffer_view(const basic_string<Char>& buffer) noexcept;
+
         template < typename T, std::size_t N >
         buffer_view(const std::array<T,N>& buffer) noexcept;
 
@@ -57,6 +60,11 @@ namespace e2d
     : data_(buffer.data())
     , size_(buffer.size() * sizeof(T)) {}
 
+    template < typename Char >
+    buffer_view::buffer_view(const basic_string<Char>& buffer) noexcept
+    : data_(buffer.data())
+    , size_(buffer.size() * sizeof(Char)) {}
+
     template < typename T, std::size_t N >
     buffer_view::buffer_view(const std::array<T,N>& buffer) noexcept
     : data_(buffer.data())

headers/enduro2d/utils/filesystem.hpp

@@ -7,6 +7,9 @@
 #pragma once
 
 #include "_utils.hpp"
+
+#include "buffer.hpp"
+#include "buffer_view.hpp"
 #include "streams.hpp"
 
 namespace e2d
@@ -73,9 +76,7 @@ namespace e2d::filesystem
 
     bool try_read_all(str& dst, str_view path) noexcept;
     bool try_read_all(buffer& dst, str_view path) noexcept;
-
-    bool try_write_all(const str& src, str_view path, bool append) noexcept;
-    bool try_write_all(const buffer& src, str_view path, bool append) noexcept;
+    bool try_write_all(buffer_view src, str_view path, bool append) noexcept;
 
     enum class predef_path {
         home,

headers/enduro2d/utils/streams.hpp

@@ -8,6 +8,9 @@
 
 #include "_utils.hpp"
 
+#include "buffer.hpp"
+#include "buffer_view.hpp"
+
 namespace e2d
 {
     class bad_stream_operation final : public exception {
@@ -78,8 +81,7 @@ namespace e2d
 
         output_sequence& seek(std::ptrdiff_t offset, bool relative) noexcept;
         output_sequence& write(const void* src, std::size_t size) noexcept;
-        output_sequence& write_all(const str& src) noexcept;
-        output_sequence& write_all(const buffer& src) noexcept;
+        output_sequence& write_all(buffer_view src) noexcept;
 
         output_sequence& flush() noexcept;
         output_sequence& flush_if(bool yesno) noexcept;
@@ -112,11 +114,7 @@ namespace e2d::streams
         const input_stream_uptr& stream) noexcept;
 
     bool try_write_tail(
-        const str& src,
-        const output_stream_uptr& stream) noexcept;
-
-    bool try_write_tail(
-        const buffer& src,
+        buffer_view src,
         const output_stream_uptr& stream) noexcept;
 }
 

sources/enduro2d/utils/filesystem.cpp

@@ -105,12 +105,7 @@ namespace e2d::filesystem
             dst, make_read_file(path));
     }
 
-    bool try_write_all(const str& src, str_view path, bool append) noexcept {
-        return streams::try_write_tail(
-            src, make_write_file(path, append));
-    }
-
-    bool try_write_all(const buffer& src, str_view path, bool append) noexcept {
+    bool try_write_all(buffer_view src, str_view path, bool append) noexcept {
         return streams::try_write_tail(
             src, make_write_file(path, append));
     }

sources/enduro2d/utils/streams.cpp

@@ -5,7 +5,6 @@
  ******************************************************************************/
 
 #include <enduro2d/utils/streams.hpp>
-#include <enduro2d/utils/buffer.hpp>
 
 namespace
 {
@@ -171,18 +170,12 @@ namespace e2d
         return *this;
     }
 
-    output_sequence& output_sequence::write_all(const buffer& src) noexcept {
+    output_sequence& output_sequence::write_all(buffer_view src) noexcept {
         return success_
             ? write(src.data(), src.size())
             : *this;
     }
 
-    output_sequence& output_sequence::write_all(const str& src) noexcept {
-        return success_
-            ? write(src.c_str(), src.size())
-            : *this;
-    }
-
     output_sequence& output_sequence::flush() noexcept {
         try {
             if ( success_ ) {
@@ -229,15 +222,7 @@ namespace e2d::streams
             : false;
     }
 
-    bool try_write_tail(const str& src, const output_stream_uptr& stream) noexcept {
-        return stream
-            ? output_sequence(*stream)
-                .write_all(src)
-                .success()
-            : false;
-    }
-
-    bool try_write_tail(const buffer& src, const output_stream_uptr& stream) noexcept {
+    bool try_write_tail(buffer_view src, const output_stream_uptr& stream) noexcept {
         return stream
             ? output_sequence(*stream)
                 .write_all(src)

untests/sources/untests_utils/buffer.cpp

@@ -220,6 +220,11 @@ TEST_CASE("buffer_view") {
         buffer_view v5(b2);
         REQUIRE(v5.data() == b2.data());
         REQUIRE(v5.size() == 20);
+
+        str32 b3 = make_utf32("hello");
+        buffer_view v6(b3);
+        REQUIRE(v6.data() == b3.data());
+        REQUIRE(v6.size() == 20);
     }
     {
         const char* s0 = "hell";