add fputwc, which enables wprintf1.8.9

2 files changed, 45 insertions, 0 deletions

diff --git a/system/lib/libc/musl/src/internal/stdio_impl.h b/system/lib/libc/musl/src/internal/stdio_impl.h
index 2083b2fe..6bcd44dc 100644
--- a/system/lib/libc/musl/src/internal/stdio_impl.h
+++ b/system/lib/libc/musl/src/internal/stdio_impl.h
@@ -7,9 +7,15 @@
 
 #define UNGET 8
 
+#if 1 // XXX EMSCRIPTEN
+#define FFINALLOCK(f) 0
+#define FLOCK(f) 0
+#define FUNLOCK(f) 0
+#else
 #define FFINALLOCK(f) ((f)->lock>=0 ? __lockfile((f)) : 0)
 #define FLOCK(f) int __need_unlock = ((f)->lock>=0 ? __lockfile((f)) : 0)
 #define FUNLOCK(f) if (__need_unlock) __unlockfile((f)); else
+#endif
 
 #define F_PERM 1
 #define F_NORD 4
diff --git a/system/lib/libc/musl/src/stdio/fputwc.c b/system/lib/libc/musl/src/stdio/fputwc.c
new file mode 100644
index 00000000..11db2804
--- /dev/null
+++ b/system/lib/libc/musl/src/stdio/fputwc.c
@@ -0,0 +1,39 @@
+#include "stdio_impl.h"
+#include <wchar.h>
+#include <limits.h>
+#include <ctype.h>
+
+wint_t __fputwc_unlocked(wchar_t c, FILE *f)
+{
+	char mbc[MB_LEN_MAX];
+	int l;
+
+	f->mode |= f->mode+1;
+
+	if (isascii(c)) {
+#if 0 // XXX EMSCRIPTEN
+		c = putc_unlocked(c, f);
+	} else if (f->wpos + MB_LEN_MAX < f->wend) {
+		l = wctomb((void *)f->wpos, c);
+		if (l < 0) c = WEOF;
+		else f->wpos += l;
+#else
+		c = fputc(c, f);
+#endif
+	} else {
+		l = wctomb(mbc, c);
+		if (l < 0 || __fwritex((void *)mbc, l, f) < l) c = WEOF;
+	}
+	return c;
+}
+
+wint_t fputwc(wchar_t c, FILE *f)
+{
+	FLOCK(f);
+	c = __fputwc_unlocked(c, f);
+	FUNLOCK(f);
+	return c;
+}
+
+weak_alias(__fputwc_unlocked, fputwc_unlocked);
+weak_alias(__fputwc_unlocked, putwc_unlocked);