FMT_NO_STREAM_LIBRARIES -> FMT_USE_IOSTREAMS

for consistency with similar macros and removed unnecessary
checks.

Author: vitaut

format.cc

@@ -1252,13 +1252,11 @@ FMT_FUNC void fmt::print(CStringRef format_str, ArgList args) {
   print(stdout, format_str, args);
 }
 
-#ifndef FMT_NO_STREAM_LIBRARIES
 FMT_FUNC void fmt::print(std::ostream &os, CStringRef format_str, ArgList args) {
   MemoryWriter w;
   w.write(format_str, args);
   os.write(w.data(), w.size());
 }
-#endif
 
 FMT_FUNC void fmt::print_colored(Color c, CStringRef format, ArgList args) {
   char escape[] = "\x1b[30m";

format.h

@@ -40,7 +40,11 @@
 #include <string>
 #include <map>
 
-#ifndef FMT_NO_STREAM_LIBRARIES
+#ifndef FMT_USE_IOSTREAMS
+# define FMT_USE_IOSTREAMS 1
+#endif
+
+#if FMT_USE_IOSTREAMS
 # include <sstream>
 #endif
 
@@ -2688,20 +2692,6 @@ void print(std::FILE *f, CStringRef format_str, ArgList args);
  */
 void print(CStringRef format_str, ArgList args);
 
-
-#ifndef FMT_NO_STREAM_LIBRARIES
-/**
-  \rst
-  Prints formatted data to the stream *os*.
-
-  **Example**::
-
-    print(cerr, "Don't {}!", "panic");
-  \endrst
- */
-void print(std::ostream &os, CStringRef format_str, ArgList args);
-#endif
-
 template <typename Char>
 void printf(BasicWriter<Char> &w, BasicCStringRef<Char> format, ArgList args) {
   internal::PrintfFormatter<Char>(args).format(w, format);
@@ -3014,16 +3004,26 @@ FMT_VARIADIC_W(std::wstring, format, WCStringRef)
 FMT_VARIADIC(void, print, CStringRef)
 FMT_VARIADIC(void, print, std::FILE *, CStringRef)
 
-#ifndef FMT_NO_STREAM_LIBRARIES
-FMT_VARIADIC(void, print, std::ostream &, CStringRef)
-#endif
-
 FMT_VARIADIC(void, print_colored, Color, CStringRef)
 FMT_VARIADIC(std::string, sprintf, CStringRef)
 FMT_VARIADIC_W(std::wstring, sprintf, WCStringRef)
 FMT_VARIADIC(int, printf, CStringRef)
 FMT_VARIADIC(int, fprintf, std::FILE *, CStringRef)
-}
+
+#if FMT_USE_IOSTREAMS
+/**
+  \rst
+  Prints formatted data to the stream *os*.
+
+  **Example**::
+
+    print(cerr, "Don't {}!", "panic");
+  \endrst
+ */
+void print(std::ostream &os, CStringRef format_str, ArgList args);
+FMT_VARIADIC(void, print, std::ostream &, CStringRef)
+#endif
+}  // namespace fmt
 
 #if FMT_USE_USER_DEFINED_LITERALS
 namespace fmt {

test/format-test.cc

@@ -1539,7 +1539,6 @@ TEST(FormatIntTest, FormatDec) {
   EXPECT_EQ("42", format_decimal(42ull));
 }
 
-#ifndef FMT_NO_STREAM_LIBRARIES
 TEST(FormatTest, Print) {
 #if FMT_USE_FILE_DESCRIPTORS
   EXPECT_WRITE(stdout, fmt::print("Don't {}!", "panic"), "Don't panic!");
@@ -1550,7 +1549,6 @@ TEST(FormatTest, Print) {
   fmt::print(os, "Don't {}!", "panic");
   EXPECT_EQ("Don't panic!", os.str());
 }
-#endif
 
 #if FMT_USE_FILE_DESCRIPTORS
 TEST(FormatTest, PrintColored) {