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| author | Eugene Sandulenko | 2004-06-24 14:06:22 +0000 |
|---|---|---|
| committer | Eugene Sandulenko | 2004-06-24 14:06:22 +0000 |
| commit | 264dc1349bc1f61c5f27383d4293b4c2dcf34b87 (patch) | |
| tree | 2a9110a71ac4ad6232e7ff7fa3d6442caaa054d4 | |
| parent | afbe1efa1821ab9710d9b66501cbc89d6aab3778 (diff) | |
| download | scummvm-rg350-264dc1349bc1f61c5f27383d4293b4c2dcf34b87.tar.gz scummvm-rg350-264dc1349bc1f61c5f27383d4293b4c2dcf34b87.tar.bz2 scummvm-rg350-264dc1349bc1f61c5f27383d4293b4c2dcf34b87.zip | |
Extended ReadMemoryStream class with seek method
svn-id: r14030
| -rw-r--r-- | common/stream.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/common/stream.h b/common/stream.h index d30fa63a6d..3b6d7a8d34 100644 --- a/common/stream.h +++ b/common/stream.h @@ -143,6 +143,35 @@ public: _size = _sizeOrig; _pos = 0; } + + void seek(uint32 offs, int whence = SEEK_SET) { + switch (whence) { + case SEEK_SET: + rewind(); + if (offs > _size) + offs = _size; + _size -= offs; + _ptr += offs; + _pos += offs; + break; + + case SEEK_CUR: + _size -= offs; + _ptr += offs; + _pos += offs; + break; + + case SEEK_END: + rewind(); + if (offs > _size) + offs = 0; + offs = _size - offs; + _size -= offs; + _ptr += offs; + _pos += offs; + break; + } + } }; } // End of namespace Common |