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| author | June McEnroe <june@causal.agency> | 2018-11-20 18:36:45 -0500 |
|---|---|---|
| committer | June McEnroe <june@causal.agency> | 2018-11-20 18:36:45 -0500 |
| commit | 0de63b3e4057a92f620b8d1aeef236db560c1753 (patch) | |
| tree | f7e4bfca50c5e4a7f4bd0ed96b9cf16f76eccf96 /bin/edi | |
| parent | Alias ls='ls -p' (diff) | |
| download | src-0de63b3e4057a92f620b8d1aeef236db560c1753.tar.gz src-0de63b3e4057a92f620b8d1aeef236db560c1753.zip | |
Add bufferDelete
Diffstat (limited to 'bin/edi')
| -rw-r--r-- | bin/edi/buffer.c | 16 | ||||
| -rw-r--r-- | bin/edi/edi.h | 1 |
2 files changed, 17 insertions, 0 deletions
diff --git a/bin/edi/buffer.c b/bin/edi/buffer.c index cefd0a5e..5ece2e51 100644 --- a/bin/edi/buffer.c +++ b/bin/edi/buffer.c @@ -66,6 +66,12 @@ void bufferAppend(struct Buffer *buf, wchar_t ch) { buf->slice.len++; } +void bufferDelete(struct Buffer *buf) { + if (!buf->slice.len) return; + buf->slice.len--; + buf->len--; +} + wchar_t *bufferDest(struct Buffer *buf, size_t len) { if (buf->len + len > buf->cap) { while (len > buf->cap) buf->cap *= 2; @@ -116,6 +122,16 @@ int main() { bufferFree(&buf); buf = bufferAlloc(4); + bufferInsert(&buf); + bufferAppend(&buf, L'A'); + bufferAppend(&buf, L'B'); + bufferDelete(&buf); + assert(!wcsncmp(L"A", buf.slice.ptr, buf.slice.len)); + bufferAppend(&buf, L'C'); + assert(!wcsncmp(L"AC", buf.slice.ptr, buf.slice.len)); + bufferFree(&buf); + + buf = bufferAlloc(4); wchar_t *dest = bufferDest(&buf, 2); dest[0] = L'A'; diff --git a/bin/edi/edi.h b/bin/edi/edi.h index b2e87e19..3e43e40d 100644 --- a/bin/edi/edi.h +++ b/bin/edi/edi.h @@ -44,6 +44,7 @@ struct Buffer bufferAlloc(size_t cap); void bufferFree(struct Buffer *buf); void bufferInsert(struct Buffer *buf); void bufferAppend(struct Buffer *buf, wchar_t ch); +void bufferDelete(struct Buffer *buf); wchar_t *bufferDest(struct Buffer *buf, size_t len); struct Table { |