mirror of https://github.com/qpdf/qpdf.git
68 lines
1.2 KiB
C++
68 lines
1.2 KiB
C++
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#include <qpdf/Pl_Buffer.hh>
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#include <qpdf/QEXC.hh>
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#include <assert.h>
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Pl_Buffer::Pl_Buffer(char const* identifier, Pipeline* next) :
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Pipeline(identifier, next),
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ready(false),
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total_size(0)
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{
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}
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Pl_Buffer::~Pl_Buffer()
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{
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}
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void
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Pl_Buffer::write(unsigned char* buf, int len)
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{
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Buffer* b = new Buffer(len);
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memcpy(b->getBuffer(), buf, len);
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this->data.push_back(b);
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this->ready = false;
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this->total_size += len;
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if (getNext(true))
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{
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getNext()->write(buf, len);
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}
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}
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void
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Pl_Buffer::finish()
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{
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this->ready = true;
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if (getNext(true))
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{
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getNext()->finish();
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}
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}
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Buffer*
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Pl_Buffer::getBuffer()
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{
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if (! this->ready)
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{
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throw QEXC::Internal("Pl_Buffer::getBuffer() called when not ready");
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}
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Buffer* b = new Buffer(this->total_size);
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unsigned char* p = b->getBuffer();
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while (! this->data.empty())
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{
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PointerHolder<Buffer> bph = this->data.front();
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this->data.pop_front();
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Buffer* bp = bph.getPointer();
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size_t bytes = bp->getSize();
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memcpy(p, bp->getBuffer(), bytes);
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p += bytes;
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this->total_size -= bytes;
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}
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assert(this->total_size == 0);
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this->ready = false;
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return b;
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}
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