libqpdf/Pl_StdioFile.cc


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#include <qpdf/qpdf-config.h>  // include first for large file support

#include <qpdf/Pl_StdioFile.hh>

#include <qpdf/QUtil.hh>
#include <stdexcept>
#include <errno.h>

Pl_StdioFile::Members::Members(FILE* f) :
    file(f)
{
}

Pl_StdioFile::Members::~Members()
{
}

Pl_StdioFile::Pl_StdioFile(char const* identifier, FILE* f) :
    Pipeline(identifier, 0),
    m(new Members(f))
{
}

Pl_StdioFile::~Pl_StdioFile()
{
}

void
Pl_StdioFile::write(unsigned char* buf, size_t len)
{
    size_t so_far = 0;
    while (len > 0)
    {
        so_far = fwrite(buf, 1, len, this->m->file);
        if (so_far == 0)
        {
            QUtil::throw_system_error(
                this->identifier + ": Pl_StdioFile::write");
        }
        else
        {
            buf += so_far;
            len -= so_far;
        }
    }
}

void
Pl_StdioFile::finish()
{
    if ((fflush(this->m->file) == -1) &&
        (errno == EBADF))
    {
        throw std::logic_error(
            this->identifier +
            ": Pl_StdioFile::finish: stream already closed");
    }
}