Pl_Function.cc
1.68 KB
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#include <qpdf/Pl_Function.hh>
#include <stdexcept>
class Pl_Function::Members
{
public:
Members(writer_t fn) :
fn(fn)
{
}
Members(Members const&) = delete;
~Members() = default;
writer_t fn;
};
Pl_Function::Pl_Function(char const* identifier, Pipeline* next, writer_t fn) :
Pipeline(identifier, next),
m(std::make_unique<Members>(fn))
{
}
Pl_Function::Pl_Function(char const* identifier, Pipeline* next, writer_c_t fn, void* udata) :
Pipeline(identifier, next),
m(std::make_unique<Members>(nullptr))
{
m->fn = [identifier, fn, udata](unsigned char const* data, size_t len) {
int code = fn(data, len, udata);
if (code != 0) {
throw std::runtime_error(
std::string(identifier) + " function returned code " + std::to_string(code));
}
};
}
Pl_Function::Pl_Function(char const* identifier, Pipeline* next, writer_c_char_t fn, void* udata) :
Pipeline(identifier, next),
m(new Members(nullptr))
{
m->fn = [identifier, fn, udata](unsigned char const* data, size_t len) {
int code = fn(reinterpret_cast<char const*>(data), len, udata);
if (code != 0) {
throw std::runtime_error(
std::string(identifier) + " function returned code " + std::to_string(code));
}
};
}
Pl_Function::~Pl_Function() // NOLINT (modernize-use-equals-default)
{
// Must be explicit and not inline -- see QPDF_DLL_CLASS in README-maintainer
}
void
Pl_Function::write(unsigned char const* buf, size_t len)
{
m->fn(buf, len);
if (next()) {
next()->write(buf, len);
}
}
void
Pl_Function::finish()
{
if (next()) {
next()->finish();
}
}