Add input() convenience function to stdlib_io with documentation, tests, and example (Fixes #259) #1067
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Pull request overview
This PR adds a Python-like input() convenience function to stdlib_io for reading user input from standard input with an optional prompt. The implementation reuses the existing get_line_input_char infrastructure and follows the module's error handling patterns. The addition includes documentation, an example program, and basic compilation tests.
Key Changes
- New
input(prompt, stat)function that displays an optional prompt and reads a line from stdin - Example program demonstrating both simple usage and error handling with status checking
- Documentation section describing the new function with syntax and usage examples
Reviewed changes
Copilot reviewed 6 out of 7 changed files in this pull request and generated 5 comments.
Show a summary per file
| File | Description |
|---|---|
| src/stdlib_io.fypp | Adds input_character function implementation and interface, plus general whitespace cleanup throughout the file |
| test/io/test_input.f90 | Adds basic compilation test for the new function |
| test/io/CMakeLists.txt | Registers the new test in the build system |
| example/io/example_input.f90 | Provides example demonstrating simple and error-checked usage |
| example/io/CMakeLists.txt | Builds the example executable (not run as test due to interactive nature) |
| doc/specs/stdlib_io.md | Documents the new function with status, description, syntax, and examples |
| .gitignore | Adds .venv/ for Python virtual environment directories |
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This commit adds a minimal Python-like input(prompt, iostat) convenience function to stdlib_io. Files changed: - src/stdlib_io.fypp: new generic interface and input_character implementation - doc/specs/stdlib_io.md: documentation, Arguments and examples - test/io/test_input.f90: compilation + CI-safe functional tests - test/io/CMakeLists.txt: register input tests - example/io/example_input.f90: example Behavior: - Optional prompt printed without newline - Trailing whitespace preserved - Optional iostat returns 0 on success, non-zero on EOF/I/O error - If iostat not provided, follows stdlib error semantics and calls error_stop on error This fixes Issue fortran-lang#259.
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Adds a minimal Python-like input(prompt, stat) function to stdlib_io.
Reads a full line, optional prompt + optional stat, follows stdlib error semantics, no parsing.
Includes docs, tests, example, and CMake updates.
Small, safe, ergonomic addition aligned with stdlib goals.
Ready for review.