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author | Nicholas <nbnoll@eml.cc> | 2021-11-12 09:22:01 -0800 |
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committer | Nicholas <nbnoll@eml.cc> | 2021-11-12 09:22:01 -0800 |
commit | ce05175372a9ddca1a225db0765ace1127a39293 (patch) | |
tree | 5988b4d4f6b402e4953945886fc90aae11203df6 /src/base/bufio/unget.c | |
parent | b375f3cdedb5b0e08745d100b40e38d2f8396a58 (diff) |
chore: simplified organizational structurelaptop
Diffstat (limited to 'src/base/bufio/unget.c')
-rw-r--r-- | src/base/bufio/unget.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/base/bufio/unget.c b/src/base/bufio/unget.c new file mode 100644 index 0000000..3fd16de --- /dev/null +++ b/src/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; +} |