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-rw-r--r--string.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/string.c b/string.c
index 1d15f9a6e8..ef826d8594 100644
--- a/string.c
+++ b/string.c
@@ -26,6 +26,8 @@
#include <unistd.h>
#endif
+#define numberof(array) (int)(sizeof(array) / sizeof((array)[0]))
+
#undef rb_str_new_cstr
#undef rb_tainted_str_new_cstr
#undef rb_usascii_str_new_cstr
@@ -3102,8 +3104,10 @@ rb_str_upto(int argc, VALUE *argv, VALUE beg)
if (ascii && ISDIGIT(RSTRING_PTR(beg)[0]) && ISDIGIT(RSTRING_PTR(end)[0])) {
char *s, *send;
VALUE b, e;
+ int width;
s = RSTRING_PTR(beg); send = RSTRING_END(beg);
+ width = rb_long2int(send - s);
while (s < send) {
if (!ISDIGIT(*s)) goto no_digits;
s++;
@@ -3118,20 +3122,22 @@ rb_str_upto(int argc, VALUE *argv, VALUE beg)
if (FIXNUM_P(b) && FIXNUM_P(e)) {
long bi = FIX2LONG(b);
long ei = FIX2LONG(e);
- char buf[sizeof(long)*3+1];
+ rb_encoding *usascii = rb_usascii_encoding();
while (bi <= ei) {
if (excl && bi == ei) break;
- sprintf(buf, "%ld", bi);
- rb_yield(rb_usascii_str_new_cstr(buf));
+ rb_yield(rb_enc_sprintf(usascii, "%.*ld", width, bi));
bi++;
}
}
else {
ID op = excl ? '<' : rb_intern("<=");
+ VALUE args[2], fmt = rb_obj_freeze(rb_usascii_str_new_cstr("%.*d"));
+ args[0] = INT2FIX(width);
while (rb_funcall(b, op, 1, e)) {
- rb_yield(rb_obj_as_string(b));
+ args[1] = b;
+ rb_yield(rb_str_format(numberof(args), args, fmt));
b = rb_funcall(b, succ, 0, 0);
}
}