1 files changed, 101 insertions, 0 deletions
diff --git a/jni/ruby/ext/-test-/printf/printf.c b/jni/ruby/ext/-test-/printf/printf.c
new file mode 100644
index 0000000..666f559
--- /dev/null
+++ b/jni/ruby/ext/-test-/printf/printf.c
@@ -0,0 +1,101 @@
+#include <ruby.h>
+#include <ruby/encoding.h>
+
+static VALUE
+printf_test_s(VALUE self, VALUE obj)
+{
+    return rb_enc_sprintf(rb_usascii_encoding(), "<%"PRIsVALUE">", obj);
+}
+
+static VALUE
+printf_test_v(VALUE self, VALUE obj)
+{
+    return rb_enc_sprintf(rb_usascii_encoding(), "{%+"PRIsVALUE"}", obj);
+}
+
+static VALUE
+printf_test_q(VALUE self, VALUE obj)
+{
+    return rb_enc_sprintf(rb_usascii_encoding(), "[% "PRIsVALUE"]", obj);
+}
+
+static char *
+uint_to_str(char *p, char *e, unsigned int x)
+{
+    char *e0 = e;
+    if (e <= p) return p;
+    do {
+	*--e = x % 10 + '0';
+    } while ((x /= 10) != 0 && e > p);
+    memmove(p, e, e0 - e);
+    return p + (e0 - e);
+}
+
+static VALUE
+printf_test_call(int argc, VALUE *argv, VALUE self)
+{
+    VALUE opt, type, num, result;
+    char format[sizeof(int) * 6 + 8], *p = format, cnv;
+    int n = 0;
+    const char *s = 0;
+
+    rb_scan_args(argc, argv, "2:", &type, &num, &opt);
+    Check_Type(type, T_STRING);
+    if (RSTRING_LEN(type) != 1) rb_raise(rb_eArgError, "wrong length(%ld)", RSTRING_LEN(type));
+    switch (cnv = RSTRING_PTR(type)[0]) {
+      case 'd': case 'x': case 'o': case 'X':
+	n = NUM2INT(num);
+	break;
+      case 's':
+	s = StringValueCStr(num);
+	break;
+      default: rb_raise(rb_eArgError, "wrong conversion(%c)", cnv);
+    }
+    *p++ = '%';
+    if (!NIL_P(opt)) {
+	VALUE v;
+	Check_Type(opt, T_HASH);
+	if (RTEST(rb_hash_aref(opt, ID2SYM(rb_intern("space"))))) {
+	    *p++ = ' ';
+	}
+	if (RTEST(rb_hash_aref(opt, ID2SYM(rb_intern("hash"))))) {
+	    *p++ = '#';
+	}
+	if (RTEST(rb_hash_aref(opt, ID2SYM(rb_intern("plus"))))) {
+	    *p++ = '+';
+	}
+	if (RTEST(rb_hash_aref(opt, ID2SYM(rb_intern("minus"))))) {
+	    *p++ = '-';
+	}
+	if (RTEST(rb_hash_aref(opt, ID2SYM(rb_intern("zero"))))) {
+	    *p++ = '0';
+	}
+	if (!NIL_P(v = rb_hash_aref(opt, ID2SYM(rb_intern("width"))))) {
+	    p = uint_to_str(p, format + sizeof(format), NUM2UINT(v));
+	}
+	if (!NIL_P(v = rb_hash_aref(opt, ID2SYM(rb_intern("prec"))))) {
+	    *p++ = '.';
+	    if (FIXNUM_P(v))
+		p = uint_to_str(p, format + sizeof(format), NUM2UINT(v));
+	}
+    }
+    *p++ = cnv;
+    *p++ = '\0';
+    if (cnv == 's') {
+	result = rb_enc_sprintf(rb_usascii_encoding(), format, s);
+    }
+    else {
+	result = rb_enc_sprintf(rb_usascii_encoding(), format, n);
+    }
+    return rb_assoc_new(result, rb_usascii_str_new_cstr(format));
+}
+
+void
+Init_printf(void)
+{
+    VALUE m = rb_define_module_under(rb_define_module("Bug"), "Printf");
+    rb_define_singleton_method(m, "s", printf_test_s, 1);
+    rb_define_singleton_method(m, "v", printf_test_v, 1);
+    rb_define_singleton_method(m, "q", printf_test_q, 1);
+    rb_define_singleton_method(m, "call", printf_test_call, -1);
+}