Chapter 13 Further Reading

Free Pascal Documentation

Free Pascal Reference Guide — File Handling https://www.freepascal.org/docs-html/ref/refch13.html The official language reference for file types, including text files, typed files, and untyped files. Covers all procedures and functions discussed in this chapter with precise technical specifications.
Free Pascal RTL Reference — System Unit (File Routines) https://www.freepascal.org/docs-html/rtl/system/index.html Documentation for AssignFile, Reset, Rewrite, Append, CloseFile, Seek, FilePos, FileSize, Truncate, IOResult, Rename, Erase, and related routines.
Free Pascal RTL Reference — SysUtils Unit https://www.freepascal.org/docs-html/rtl/sysutils/index.html Documentation for FileExists, DirectoryExists, DeleteFile, RenameFile, ExtractFileName, ExtractFileExt, ForceDirectories, FindFirst/FindNext, and other file utility functions.

"Object Pascal Handbook" by Marco Cantu Chapter on file I/O covers both traditional Pascal file operations and modern stream-based approaches. Cantu provides clear examples and discusses the transition from classic file I/O to TStream-based patterns used in Lazarus/Delphi applications.
"Programming in Pascal" by Peter Grogono A classic Pascal textbook with thorough coverage of file handling. Grogono's treatment of text files and typed files is particularly clear, with excellent diagrams showing file pointer behavior during Seek operations.
"Pascal Programming and Problem Solving" by Sanford Leestma and Larry Nyhoff Contains an extended chapter on file processing with real-world examples including transaction processing and sequential file updates. The discussion of master-file/transaction-file update patterns is relevant to anyone building data-driven applications.

"Operating Systems: Three Easy Pieces" by Arpaci-Dusseau and Arpaci-Dusseau Chapters 39-42 cover file systems in depth. Understanding how the operating system manages files on disk helps explain why certain file operations (like Seek on typed files) are fast while others (like inserting a line in the middle of a text file) are slow. Freely available at https://pages.cs.wisc.edu/~remzi/OSTEP/
"Computer Organization and Design" by Patterson and Hennessy The storage hierarchy chapter explains why persistent storage (disk/SSD) behaves so differently from RAM — latency, bandwidth, block-based access patterns. This context helps you understand why buffering matters and why BlockRead with large blocks outperforms byte-by-byte I/O.

Streams and TStream: Modern Free Pascal (and Delphi) applications often use the TStream class hierarchy instead of traditional file I/O. TFileStream, TMemoryStream, and TStringStream provide object-oriented wrappers with uniform interfaces. We will encounter streams in later chapters when we discuss object-oriented programming.
SQLite via Pascal: For applications that outgrow typed files — needing multi-field searches, complex queries, or concurrent access — SQLite provides a lightweight embedded database. Free Pascal can interface with SQLite through packages like sqlite3conn in the FCL-DB framework.
JSON and XML: Modern data interchange often uses JSON or XML instead of CSV or custom binary formats. Free Pascal includes fpjson and laz2_DOM units for working with these formats. These build on the text file foundations from this chapter.
Memory-Mapped Files: For very large files, memory-mapped I/O allows the operating system to map file contents directly into the program's address space. Free Pascal supports this through platform-specific APIs. This is an advanced technique covered in systems programming courses.

Project Euler (https://projecteuler.net/) — Many problems involve reading large data files and performing computations. Problems 8, 11, 13, 18, 22, 42, 54, 59, 67, and 79 all work well as file I/O exercises in Pascal.
Advent of Code (https://adventofcode.com/) — Each puzzle provides input as a text file. Solving these puzzles in Pascal is excellent practice for text file reading and parsing.