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Why? The main methods that create them return smart pointers so that users can initialize them when needed, which you can't do with references. Returning pointers instead of references makes for a more uniform interface.
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Use named functions rather than just end() for clarity.
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All that's left now is input and output handling.
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This was used, but it no longer is, so let's not keep the extra complexity around.
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Create QPDFJob_options.cc to hold API implementation functions. Reorganize a little in preparation for moving public member variables private and creating the real QPDFJob API that will be used by callers as well as the argv/json initialization methods.
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The previous commits have removed all references to memory from QPDFArgParser from QPDFJob. This commit removes the constraint that QPDFArgParser remain in scope. This is a prerequisite to allowing JSON as an alternative way to initialize QPDFJob and to initialize it directly using a public API.
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Also fix QPDFArgParser
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Replace most of the calls to QUtil::copy_string with this instead.
