diff options
author | Nicholas Noll <nbnoll@eml.cc> | 2021-11-11 16:31:58 -0800 |
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committer | Nicholas Noll <nbnoll@eml.cc> | 2021-11-11 16:31:58 -0800 |
commit | 9695ea005d4af93dcd60f74f10fd3c54499a182f (patch) | |
tree | 3e1a9abb9456ba07c0c97cd3d691f6a2df115791 /sys/base/bufio/unget.c | |
parent | c65794b50b1bc729e7a4e940b76a973afa3030b9 (diff) |
chore: split up base library into individual files for smaller binaries
Diffstat (limited to 'sys/base/bufio/unget.c')
-rw-r--r-- | sys/base/bufio/unget.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sys/base/bufio/unget.c b/sys/base/bufio/unget.c new file mode 100644 index 0000000..3fd16de --- /dev/null +++ b/sys/base/bufio/unget.c @@ -0,0 +1,18 @@ +#include "internal.h" + +error +bufio·ungetbyte(io·Buffer *buf, byte c) +{ + if(!(buf->state & bufio·rdr)) { + errorf("attempted to unget on non-active reader"); + return bufio·err; + } + + if(buf->pos == buf->buf) { + errorf("attempted to unget past end of buffer"); + return bufio·err; + } + + buf->pos--; + return 0; +} |