OpenSystemsDevelopment / qpdf

Relocate `reconstructed_xref` to `QPDF::Doc` for improved encapsulation of cross-reference reconstruction state. Adjust all references to use the updated placement.

Relocate `StreamCopier` to `QPDF::Doc` for improved encapsulation of stream copying functionality. Adjust all references to use the updated placement.

Relocate `JobSetter` to `QPDF::Doc` for improved encapsulation of job-related logic. Adjust all references to use the new placement.

Relocate `Writer` to `QPDF::Doc` for better encapsulation of writer-related logic. Adjust all references to use the new placement.

Relocate `Pipe` functionality to `QPDF::Doc::Streams` for improved encapsulation of stream-related logic. Adjust all references to use the new placement.

Relocate `Resolver` to `QPDF::Doc` for improved encapsulation of resolution logic. Adjust all references accordingly to use the new placement.

Relocate `ParseGuard` to `QPDF::Doc` for better encapsulation of parsing logic. Adjust references in `QPDFParser` accordingly to use the new placement.

Replace direct access to document helpers (`acroform()`, `pages()`, `embedded_files()`, etc.) with calls through `QPDF::doc()` for better encapsulation. Adjust related methods, constructors, and memory management accordingly.

Add `QPDF::Doc` as an inner class to manage document-level functionality. Update memory management in `QPDF::Members` to include `Doc` and ensure proper initialization. Add `QPDF::doc()` method for internal access. Refactor constructors accordingly.

Refactor Buffer

Introduce new methods: `data()` to access buffer content, `empty()` to check buffer state, and `size()` to retrieve buffer size. Update unit tests to validate the behavior of these methods alongside existing functionality.

Implement `Buffer::view()` to provide a read-only view of the buffer content. Update unit tests to validate `view()` behavior alongside `move()`. Include necessary `#include <string_view>` for functionality.

Refactor `Buffer`: implement `move()` method to enable efficient transfer of content to a string, leaving the buffer empty. Include unit tests for `move()` functionality to ensure correctness. Remove redundant `#include <cstring>` for cleanup.

…ng handling, and reduce reliance on `reinterpret_cast`.

… replace manual memory management with `std::string`.

…modern resource management.

Refactor QPDFWriter

…idate conditions, and enhance readability.

…oding flags, streamline filter logic, and simplify condition handling.

…ctionary handling, streamline filtering logic, and simplify length checks.

…gic, consolidate conditions, and enhance readability.

…e-returning overload, streamline calls, and simplify stream filtering checks.

…trailer handling, streamline trailer processing logic, and simplify related method calls.

…ream compression given that qpdf_mode is incompatible with linearization.

… `QPDF` parameter with `pdf` member, and simplify method calls.

…iter`, and simplify resource management.

Refactor `assert_debug.h` to add new debug assertion aliases and upda…

…lace manual checks with `no_ci_stop_if`, and utilize `emplace_back` for improved clarity.

…ance error and warning handling within `BaseHandle` and `QPDF`, highlighting that the error condition is not covered in CI testing without generating codecov noise.

…directives across modules to improve clarity and enforce better assertion practices.

Refactor QPDFJob::handlePageSpecs

…page label processing logic, centralize label handling, and adjust related resource management.

…ges` sets with vector<bool> `Input::copied_pages`, centralize page tracking logic, adjust page processing, and simplify resource management.

…input, centralize page range parsing, and simplify page processing.

…and replace it with a setter that directly sets `Input::password`, centralize password handling, simplify file processing, and adjust related logic in `handlePageSpecs`.

…input_entry`, centralize input file handling in `infile_name`, update `new_selection` logic, and simplify page range and input processing.

…gic in `handlePageSpecs` and `new_selection`, and simplify page processing.

…alize handling in `Files::process_all`, and simplify `handlePageSpecs`.