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zlib.c: zstream_buffer_ungetbyte

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* ext/zlib/zlib.c (zstream_buffer_ungetbyte): simplify by using
  zstream_buffer_ungets().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58525 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-05-01 00:35:02 +00:00
parent 5f8ae91717
commit c4c3d86a1f
1 changed files with 2 additions and 11 deletions
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13
ext/zlib/zlib.c
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@ -829,17 +829,8 @@ zstream_buffer_ungets(struct zstream *z, const Bytef *b, unsigned long len)
static void
zstream_buffer_ungetbyte(struct zstream *z, int c)
{
if (NIL_P(z->buf) || RSTRING_LEN(z->buf) - z->buf_filled == 0) {
zstream_expand_buffer(z);
}
memmove(RSTRING_PTR(z->buf) + 1, RSTRING_PTR(z->buf), z->buf_filled);
RSTRING_PTR(z->buf)[0] = (char)c;
z->buf_filled++;
if (z->stream.avail_out > 0) {
z->stream.next_out++;
z->stream.avail_out--;
}
Bytef cc = (Bytef)c;
zstream_buffer_ungets(z, &cc, 1);
}
static void