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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /other-licenses/7zstub/src/CPP/Common/DynamicBuffer.h | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'other-licenses/7zstub/src/CPP/Common/DynamicBuffer.h')
| -rw-r--r-- | other-licenses/7zstub/src/CPP/Common/DynamicBuffer.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/Common/DynamicBuffer.h b/other-licenses/7zstub/src/CPP/Common/DynamicBuffer.h new file mode 100644 index 0000000000..16c925010e --- /dev/null +++ b/other-licenses/7zstub/src/CPP/Common/DynamicBuffer.h @@ -0,0 +1,64 @@ +// Common/DynamicBuffer.h
+
+#ifndef __COMMON_DYNAMIC_BUFFER_H
+#define __COMMON_DYNAMIC_BUFFER_H
+
+template <class T> class CDynamicBuffer
+{
+ T *_items;
+ size_t _size;
+ size_t _pos;
+
+ CDynamicBuffer(const CDynamicBuffer &buffer);
+ void operator=(const CDynamicBuffer &buffer);
+
+ void Grow(size_t size)
+ {
+ size_t delta = _size >= 64 ? _size : 64;
+ if (delta < size)
+ delta = size;
+ size_t newCap = _size + delta;
+ if (newCap < delta)
+ {
+ newCap = _size + size;
+ if (newCap < size)
+ throw 20120116;
+ }
+
+ T *newBuffer = new T[newCap];
+ if (_pos != 0)
+ memcpy(newBuffer, _items, _pos * sizeof(T));
+ delete []_items;
+ _items = newBuffer;
+ _size = newCap;
+ }
+
+public:
+ CDynamicBuffer(): _items(0), _size(0), _pos(0) {}
+ // operator T *() { return _items; }
+ operator const T *() const { return _items; }
+ ~CDynamicBuffer() { delete []_items; }
+
+ T *GetCurPtrAndGrow(size_t addSize)
+ {
+ size_t rem = _size - _pos;
+ if (rem < addSize)
+ Grow(addSize - rem);
+ T *res = _items + _pos;
+ _pos += addSize;
+ return res;
+ }
+
+ void AddData(const T *data, size_t size)
+ {
+ memcpy(GetCurPtrAndGrow(size), data, size * sizeof(T));
+ }
+
+ const size_t GetPos() const { return _pos; }
+
+ // void Empty() { _pos = 0; }
+};
+
+typedef CDynamicBuffer<unsigned char> CByteDynamicBuffer;
+
+#endif
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