CC-1665: Expand Zig track to grep #116
Conversation
- Introduced Zig as a new language option in course-definition.yml. - Added necessary files for Zig starter template, including build scripts, README, and configuration files. - Implemented a basic structure for the Zig solution, including a main function and pattern matching logic. - Created Dockerfile for Zig environment setup. - Included example solution files for the challenge.
WalkthroughThis pull request introduces a comprehensive set of files to support Zig programming within the CodeCrafters environment. New shell scripts, configuration files, build definitions, and source code have been added under multiple directories (compiled starters, solutions, and starter templates). These changes set up automated compilation (using Changes
Sequence Diagram(s)sequenceDiagram
participant U as User
participant CS as compile.sh
participant ZB as "zig build"
participant RS as run.sh
participant BIN as Main Binary
participant MP as matchPattern
U->>CS: Initiate build process
CS->>ZB: Execute build command
ZB-->>CS: Return build success
U->>RS: Trigger program execution
RS->>BIN: Run compiled binary with args
BIN->>MP: Invoke pattern matching
MP-->>BIN: Return match result
BIN-->>RS: Exit with status code
Poem
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Actionable comments posted: 6
🔭 Outside diff range comments (1)
compiled_starters/zig/.gitignore (1)
19-19:⚠️ Potential issueRemove Stray Entry in .gitignore.
The lone
19on line 19 appears to be a mistake. Removing this line will prevent any unintended file matching.Apply the following diff to correct it:
-19
🧹 Nitpick comments (18)
starter_templates/zig/config.yml (1)
1-4: YAML Configuration Structure – Consider Quoting Values for ClarityThe configuration is clear and correctly structured. However, the value for
required_executableaszig (0.14)may be interpreted differently by some YAML parsers. For better clarity and to avoid any potential parsing ambiguities, consider quoting this value or, alternatively, splitting it into two separate keys (e.g., one for the executable name and another for the version).Example diff if quoting is preferred:
- required_executable: zig (0.14) + required_executable: "zig (0.14)"Overall, the file meets its intended purpose.
solutions/zig/01-cq2/code/.codecrafters/run.sh (1)
11-11: Quote Command Substitution to Prevent Word Splitting
To ensure that paths with spaces are handled correctly, please quote the command substitution. Consider updating the exec command as shown below:- exec $(dirname $0)/zig-out/bin/main "$@" + exec "$(dirname "$0")/zig-out/bin/main" "$@"🧰 Tools
🪛 Shellcheck (0.10.0)
[warning] 11-11: Quote this to prevent word splitting.
(SC2046)
starter_templates/zig/code/.codecrafters/run.sh (1)
11-11: Quote Command Substitution in exec.Static analysis (Shellcheck SC2046) flags the use of unquoted command substitution in the
execcall. To prevent potential word splitting issues, consider modifying the line as follows:- exec $(dirname $0)/zig-out/bin/main "$@" + exec "$(dirname "$0")/zig-out/bin/main" "$@"This small change will make the command more robust.
🧰 Tools
🪛 Shellcheck (0.10.0)
[warning] 11-11: Quote this to prevent word splitting.
(SC2046)
compiled_starters/zig/build.zig.zon (1)
55-67: Consider explicitly listing files instead of using recursive inclusionCurrently, all files are recursively included with the empty string
"". While this works, the comments correctly note that explicitly listing files and directories is generally better practice for consistent hash generation across different environments..paths = .{ - // This makes *all* files, recursively, included in this package. It is generally - // better to explicitly list the files and directories instead, to insure that - // fetching from tarballs, file system paths, and version control all result - // in the same contents hash. - "", - // For example... - //"build.zig", - //"build.zig.zon", - //"src", - //"LICENSE", - //"README.md", + "build.zig", + "build.zig.zon", + "src", + "LICENSE", + "README.md", },compiled_starters/zig/your_program.sh (1)
19-24: Fix shell script quotation to prevent word splittingThe
execline should have proper quoting to prevent potential issues with paths containing spaces.-exec $(dirname $0)/zig-out/bin/main "$@" +exec "$(dirname "$0")"/zig-out/bin/main "$@"🧰 Tools
🪛 Shellcheck (0.10.0)
[warning] 24-24: Quote this to prevent word splitting.
(SC2046)
solutions/zig/01-cq2/code/build.zig.zon (1)
49-67: Consider explicitly listing important project files in paths sectionWhile including all files with
""works, it's generally better practice to explicitly list your important files and directories as shown in the commented examples. This ensures consistent content hashing and better dependency management.-.paths = .{ - // This makes *all* files, recursively, included in this package. It is generally - // better to explicitly list the files and directories instead, to insure that - // fetching from tarballs, file system paths, and version control all result - // in the same contents hash. - "", - // For example... - //"build.zig", - //"build.zig.zon", - //"src", - //"LICENSE", - //"README.md", -}, +.paths = .{ + "build.zig", + "build.zig.zon", + "src", + "README.md", +},solutions/zig/01-cq2/code/README.md (2)
8-11: Add a comma before the transition to a new sentenceFor better readability and proper grammar, add a comma before starting a new sentence.
-strings. [`grep`](https://en.wikipedia.org/wiki/Grep) is a CLI tool for -searching using Regexes. +strings. [`grep`](https://en.wikipedia.org/wiki/Grep) is a CLI tool for +searching using Regexes. +🧰 Tools
🪛 LanguageTool
[typographical] ~11-~11: It appears that a comma is missing.
Context: ...l for searching using Regexes. In this challenge you'll build your own implementation of...(DURING_THAT_TIME_COMMA)
34-36: Specify the exact command to install Zig 0.14The instructions would be more helpful if they included the exact command to install Zig 0.14 or a link to installation instructions, especially since this is a specific version requirement.
-1. Ensure you have `zig (0.14)` installed locally +1. Ensure you have `zig (0.14)` installed locally + - You can download it from https://ziglang.org/download/ + - Or install via package managers: `brew install [email protected]` (macOS) or check your Linux distribution's packagessolutions/zig/01-cq2/explanation.md (1)
21-25: Missing language specifier in code blockThe fenced code block for git commands should specify a language for proper syntax highlighting.
-``` +```bash git add . git commit -m "pass 1st stage" # any msg git push origin master🧰 Tools
🪛 markdownlint-cli2 (0.17.2)
21-21: Fenced code blocks should have a language specified
null(MD040, fenced-code-language)
solutions/zig/01-cq2/code/src/main.zig (1)
12-23: Buffer size limitations for command-line argumentsThe fixed buffer size of 1024 bytes might be limiting for programs with many or large command-line arguments. Consider using a dynamic allocator for real-world applications, but this is fine for the educational context.
compiled_starters/zig/README.md (1)
10-11: Add a comma for better readability.In this sentence, a comma is missing after "Regexes." and before "In this challenge".
-strings. [`grep`](https://en.wikipedia.org/wiki/Grep) is a CLI tool for -searching using Regexes. - -In this challenge you'll build your own implementation of `grep`. Along the way +strings. [`grep`](https://en.wikipedia.org/wiki/Grep) is a CLI tool for +searching using Regexes. + +In this challenge, you'll build your own implementation of `grep`. Along the way🧰 Tools
🪛 LanguageTool
[typographical] ~11-~11: It appears that a comma is missing.
Context: ...l for searching using Regexes. In this challenge you'll build your own implementation of...(DURING_THAT_TIME_COMMA)
compiled_starters/zig/src/main.zig (3)
3-9: Consider adding better error handling for unsupported patterns.The current implementation handles single-character patterns but panics for anything else. Consider providing a more graceful error message that guides users on what patterns are supported in the current stage.
fn matchPattern(input_line: []const u8, pattern: []const u8) bool { if (pattern.len == 1) { return std.mem.indexOf(u8, input_line, pattern) != null; } else { - @panic("Unhandled pattern"); + std.debug.print("Only single-character patterns are supported in this stage.\n", .{}); + std.process.exit(1); } }
12-15: Consider using a larger buffer for long inputs.The fixed buffer size of 1024 bytes might be insufficient for very long input lines. Consider increasing this or using a dynamic allocator for production use.
27-37: Uncomment this block to pass the first stage.As mentioned in the README, this block needs to be uncommented to pass the first stage of the challenge. The implementation looks correct for handling single-character patterns.
Would you like me to suggest implementations for handling more complex patterns in future stages?
starter_templates/zig/code/src/main.zig (3)
3-9: Consider adding better error handling for unsupported patterns.The current implementation handles single-character patterns but panics for anything else. Consider providing a more graceful error message that guides users on what patterns are supported in the current stage.
fn matchPattern(input_line: []const u8, pattern: []const u8) bool { if (pattern.len == 1) { return std.mem.indexOf(u8, input_line, pattern) != null; } else { - @panic("Unhandled pattern"); + std.debug.print("Only single-character patterns are supported in this stage.\n", .{}); + std.process.exit(1); } }
12-15: Consider using a larger buffer for long inputs.The fixed buffer size of 1024 bytes might be insufficient for very long input lines. Consider increasing this or using a dynamic allocator for production use.
27-37: Uncomment this block to pass the first stage.As mentioned in the README, this block needs to be uncommented to pass the first stage of the challenge. The implementation looks correct for handling single-character patterns.
Would you like me to suggest implementations for handling more complex patterns in future stages?
solutions/zig/01-cq2/diff/src/main.zig.diff (1)
13-15: Consider using a more flexible memory allocation strategy.Using a fixed buffer size of 1024 bytes might be limiting for larger inputs or more complex operations.
For better scalability, you could use a general-purpose allocator like this:
- var buffer: [1024]u8 = undefined; - var fba = std.heap.FixedBufferAllocator.init(&buffer); - const allocator = fba.allocator(); + var gpa = std.heap.GeneralPurposeAllocator(.{}){}; + defer _ = gpa.deinit(); + const allocator = gpa.allocator();
📜 Review details
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Review profile: CHILL
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📒 Files selected for processing (31)
compiled_starters/zig/.codecrafters/compile.sh(1 hunks)compiled_starters/zig/.codecrafters/run.sh(1 hunks)compiled_starters/zig/.gitattributes(1 hunks)compiled_starters/zig/.gitignore(1 hunks)compiled_starters/zig/README.md(1 hunks)compiled_starters/zig/build.zig(1 hunks)compiled_starters/zig/build.zig.zon(1 hunks)compiled_starters/zig/codecrafters.yml(1 hunks)compiled_starters/zig/src/main.zig(1 hunks)compiled_starters/zig/your_program.sh(1 hunks)course-definition.yml(1 hunks)dockerfiles/zig-0.14.Dockerfile(1 hunks)solutions/zig/01-cq2/code/.codecrafters/compile.sh(1 hunks)solutions/zig/01-cq2/code/.codecrafters/run.sh(1 hunks)solutions/zig/01-cq2/code/.gitattributes(1 hunks)solutions/zig/01-cq2/code/.gitignore(1 hunks)solutions/zig/01-cq2/code/README.md(1 hunks)solutions/zig/01-cq2/code/build.zig(1 hunks)solutions/zig/01-cq2/code/build.zig.zon(1 hunks)solutions/zig/01-cq2/code/codecrafters.yml(1 hunks)solutions/zig/01-cq2/code/src/main.zig(1 hunks)solutions/zig/01-cq2/code/your_program.sh(1 hunks)solutions/zig/01-cq2/diff/src/main.zig.diff(1 hunks)solutions/zig/01-cq2/explanation.md(1 hunks)starter_templates/zig/code/.codecrafters/compile.sh(1 hunks)starter_templates/zig/code/.codecrafters/run.sh(1 hunks)starter_templates/zig/code/.gitignore(1 hunks)starter_templates/zig/code/build.zig(1 hunks)starter_templates/zig/code/build.zig.zon(1 hunks)starter_templates/zig/code/src/main.zig(1 hunks)starter_templates/zig/config.yml(1 hunks)
🧰 Additional context used
🪛 Shellcheck (0.10.0)
solutions/zig/01-cq2/code/.codecrafters/run.sh
[warning] 11-11: Quote this to prevent word splitting.
(SC2046)
compiled_starters/zig/.codecrafters/run.sh
[warning] 11-11: Quote this to prevent word splitting.
(SC2046)
compiled_starters/zig/your_program.sh
[warning] 24-24: Quote this to prevent word splitting.
(SC2046)
solutions/zig/01-cq2/code/your_program.sh
[warning] 24-24: Quote this to prevent word splitting.
(SC2046)
starter_templates/zig/code/.codecrafters/run.sh
[warning] 11-11: Quote this to prevent word splitting.
(SC2046)
🪛 markdownlint-cli2 (0.17.2)
solutions/zig/01-cq2/explanation.md
21-21: Fenced code blocks should have a language specified
null
(MD040, fenced-code-language)
🪛 LanguageTool
solutions/zig/01-cq2/code/README.md
[typographical] ~11-~11: It appears that a comma is missing.
Context: ...l for searching using Regexes. In this challenge you'll build your own implementation of...
(DURING_THAT_TIME_COMMA)
compiled_starters/zig/README.md
[typographical] ~11-~11: It appears that a comma is missing.
Context: ...l for searching using Regexes. In this challenge you'll build your own implementation of...
(DURING_THAT_TIME_COMMA)
🪛 Hadolint (2.12.0)
dockerfiles/zig-0.14.Dockerfile
[error] 20-20: invalid flag: --exclude
(DL1000)
🔇 Additional comments (43)
compiled_starters/zig/.gitattributes (1)
1-2: Consistent Line Ending ConfigurationThe configuration line
* text=autoensures that Git will handle line endings consistently across different operating systems. This is a standard and good practice for maintaining code consistency.solutions/zig/01-cq2/code/.gitattributes (1)
1-2: Uniform Text File HandlingAdding
* text=autoin this file extends the consistent line ending configuration to the Zig solution code. This helps prevent issues related to differing newline characters across platforms.compiled_starters/zig/.gitignore (4)
1-5: Build Artifacts Patterns Are Clear and Correct.The entries for Zig build artifacts (e.g.
main,zig-cache/,.zig-cache/, andzig-out/) are appropriately specified to ignore generated files.
7-9: Proper Handling of Binary Output Folder.The
bin/directory is ignored while preserving the.gitkeepfile, which is a good practice to maintain the directory structure.
11-13: Accurate Ignoring of Build File Extensions.The ignore rules for object files (
*.o) and header files (*.h) are correctly defined.
15-18: Correct OS and Editor Specific Ignores.The patterns for OS/editor-specific files (
**/.DS_Store,*.swp, and*~) are properly included.starter_templates/zig/code/.codecrafters/compile.sh (1)
1-12: Zig Compilation Shell Script is Clear and Concise
The script correctly begins with a proper shebang, includes helpful and clear comments, and usesset -eto exit immediately on failure. The sole commandzig buildis used appropriately to trigger the build process.compiled_starters/zig/codecrafters.yml (1)
1-12: YAML Configuration for the Zig Environment is Well Defined
This configuration file clearly defines the debugging flag (debug: false) and the Zig language pack (language_pack: zig-0.14). The comments offer sufficient context for users, making it easy to understand how to adjust the settings if needed.solutions/zig/01-cq2/code/codecrafters.yml (1)
1-12: Consistent YAML Configuration for Zig Solutions
The configuration mirrors the setup in the compiled starters, ensuring consistency across environments. The debug option and language pack are properly documented, providing clarity for users on how to control verbosity and select the Zig version.course-definition.yml (1)
34-34: Add Zig Language Support
The new language entry for Zig (- slug: "zig") is added correctly to the list of supported languages. This integrates Zig into the course definition consistently with existing languages.solutions/zig/01-cq2/code/.gitignore (4)
1-6: Zig Build Artifacts Ignoring.The gitignore patterns for Zig build artifacts (e.g.
main,zig-cache/,.zig-cache/, andzig-out/) are well defined and cover common build directories produced by Zig.
7-10: Compiled Binary Output Exception.The inclusion of the
bin/directory along with the exception for!bin/.gitkeepis a good practice—it ensures that an otherwise empty directory is maintained under version control.
11-14: Build File Extensions Exclusion.The rules to ignore generated object files (
*.o) and header files (*.h) are clear and appropriate.
15-19: OS and Editor-Specific Files.The entries for ignoring typical operating system and editor files (like
.DS_Store, swap files, and backup files) are correctly set up.compiled_starters/zig/.codecrafters/compile.sh (3)
1-8: Shell Script Header and Documentation.The script starts with a proper shebang and clear comment blocks that describe its purpose and execution context. This helps future maintainers understand its role within the CodeCrafters workflow.
9-10: Robust Error Handling.The use of
set -eis an appropriate measure to ensure the script stops on any failure during the build process.
11-11: Zig Build Execution.Executing
zig builddirectly is concise and clear. Just confirm that the Zig build configuration (typically inbuild.zig) is properly set up to match your project structure.starter_templates/zig/code/.codecrafters/run.sh (2)
1-8: Shell Script Header and Documentation.The shebang and descriptive comments make it clear that this script is intended to run the compiled Zig binary after the build process.
9-10: Consistent Error Handling.The use of
set -efor immediate failure on errors is a good choice here as well.starter_templates/zig/code/.gitignore (4)
1-6: Zig Build Artifacts Ignoring.The file correctly ignores primary Zig build artifacts such as
main,zig-cache/,.zig-cache/, andzig-out/, ensuring that transient build outputs are not accidentally committed.
7-10: Managing Compiled Binary Output.Excluding the
bin/directory while retaining.gitkeepensures that an empty directory remains tracked. This is a smart practice to aid in maintaining the expected repository structure.
11-14: Excluding Generated Build Files.The entries to ignore object (
*.o) and header (*.h) files are appropriate for keeping the repository clean from auto-generated files.
15-19: Ignoring OS and Editor-Specific Files.The ignore patterns for system-generated files and editor temporary files (like
.DS_Store,*.swp, and*~) are correctly and clearly defined.solutions/zig/01-cq2/code/.codecrafters/compile.sh (3)
1-8: Shell Script Header and Documentation.The script begins with a proper shebang and informative comments. Its clear description of running before
.codecrafters/run.shis helpful for understanding the execution flow.
9-10: Use ofset -efor Error Handling.The inclusion of
set -eensures that the script will exit if any command fails, which is critical for a reliable build process.
11-11: Zig Build Invocation.The command
zig buildis used to trigger the build process. Please double-check that your Zig project is correctly configured (viabuild.zigor equivalent) for the intended build output.compiled_starters/zig/build.zig.zon (2)
2-4: Ensure the package fingerprint is kept currentThe fingerprint comment notes that it needs to be manually updated. This is a good reminder for future changes to ensure the package's uniqueness is maintained.
11-11: Appropriate minimum Zig version requirementSetting the minimum version to 0.14.0 ensures compatibility with recent features and improvements in Zig, which aligns with the PR's objective to expand Zig support.
compiled_starters/zig/build.zig (1)
1-33: Well-structured build configurationThe build file is correctly configured with appropriate documentation comments. It sets up the executable with the correct source file location, optimization options, and provides a convenient "run" step for testing.
solutions/zig/01-cq2/code/your_program.sh (1)
15-18: Properly handles directory navigation for compilationThe script correctly changes directories and ensures build steps run from the repository directory, with proper quoting for path handling.
starter_templates/zig/code/build.zig (1)
1-33: Build configuration looks well structured and follows Zig best practicesThe build.zig file is correctly configured for a standard Zig application. It:
- Creates an executable named "main" from the source file at "src/main.zig"
- Sets up standard target and optimization options
- Adds a proper run command with argument passthrough
- Includes helpful comments explaining each section
The file uses the current standard Zig build system API and follows the best practices for a simple project.
compiled_starters/zig/your_program.sh (1)
9-18: Shell script compilation block looks goodThe compilation section properly changes to the script's directory and runs
zig buildto compile the program.solutions/zig/01-cq2/code/build.zig.zon (1)
13-47: Dependencies section is well-documented with commented examplesThe dependencies section is properly structured and includes well-documented examples for how to add dependencies. This will be helpful for users who may need to extend the project with additional packages.
solutions/zig/01-cq2/code/build.zig (1)
1-33: Well-structured Zig build configuration!This build.zig file follows best practices for Zig projects with clear and informative comments. It correctly sets up the executable, installation path, and run command with argument support.
solutions/zig/01-cq2/explanation.md (1)
1-26: Explanation is clear and helpfulThe instructions provide a good entry point for users to implement their grep functionality, with helpful code examples and steps to submit their solution.
🧰 Tools
🪛 markdownlint-cli2 (0.17.2)
21-21: Fenced code blocks should have a language specified
null(MD040, fenced-code-language)
starter_templates/zig/code/build.zig.zon (1)
1-68: Well-documented package configurationThe build.zig.zon file provides comprehensive configuration with helpful comments that explain each section. It correctly defines package metadata and follows Zig package conventions.
solutions/zig/01-cq2/code/src/main.zig (2)
11-33: Correct implementation for basic pattern matchingThe main function correctly handles command-line arguments, reads input, and checks for pattern matches using the specified logic. It properly exits with the appropriate status code based on the match result.
24-32:✅ Verification successful
Limited to processing only one line of input
The current implementation only reads and processes a single line from standard input, whereas grep typically processes all lines from its input source. This might be intentional for the first stage, but it's a limitation to be aware of.
Is this limitation intentional for the first stage of the challenge? If not, consider implementing a loop to process all input lines:
🏁 Script executed:
#!/bin/bash # Check if this is intentional for the first stage grep -q "first stage" solutions/zig/01-cq2/explanation.md && echo "Limitation is likely intentional for the first stage"Length of output: 174
Review Comment Update: Confirmation of Single-Line Input Limitation
The code intentionally processes only a single line of input for this first stage, as confirmed by the reference in
solutions/zig/01-cq2/explanation.md. No changes are required at this time. If multi-line processing becomes necessary in a future stage, consider implementing an input loop.compiled_starters/zig/README.md (1)
34-36: LGTM! Clear instructions for the setup.The prerequisites and instructions are clear, specifying the exact Zig version required (0.14).
dockerfiles/zig-0.14.Dockerfile (4)
4-4: Good practice using specific version constraints.Specifying minimum versions for packages is a good security practice to ensure you have patches for known vulnerabilities.
7-10: LGTM! Efficient installation process.The Zig installation process is clean and efficient, downloading the specific version, extracting it, and cleaning up temporary files.
26-27: Good practice using build caching.Creating a cache directory for the Zig build artifacts is a good practice to speed up subsequent builds. The use of
|| trueensures the build doesn't fail if the directory doesn't exist.
20-20:❓ Verification inconclusive
Verify the
--excludeflag compatibility.The static analysis tool flagged the
--excludeflag as invalid, but this might be a false positive as it's supported in Docker syntax 1.7-labs which you're using. Still, it's worth verifying that this works as expected in your build environment.
🏁 Script executed:
#!/bin/bash # Check Docker version and if the exclude flag is supported docker --version # Test a minimal example with the exclude flag echo 'FROM alpine:3.20 COPY --exclude=README.md . /app' > test.Dockerfile docker build -t test -f test.Dockerfile .Length of output: 314
Manual Verification Required for Docker
--excludeFlag CompatibilityThe automated script couldn't verify the functionality as Docker wasn't available in the execution environment (returned
docker: command not found). Please manually verify in your local or CI environment that the--excludeflag is supported by the Docker version (Docker syntax 1.7-labs) you are using.
- Action Needed: Ensure that building with the
COPY --excludeflags works as expected in an environment where Docker is installed.🧰 Tools
🪛 Hadolint (2.12.0)
[error] 20-20: invalid flag: --exclude
(DL1000)
| .{ | ||
| .name = .codecrafters_grep, | ||
| .fingerprint = 0x68a10551e2f20e1a, // fingerprint needs to be manually updated | ||
|
|
There was a problem hiding this comment.
Package name should be a string identifier
The package name should be a string literal instead of an unquoted identifier. This syntax is incorrect for the Zig build system.
-.name = .codecrafters_grep,
+.name = "codecrafters_grep",📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| .{ | |
| .name = .codecrafters_grep, | |
| .fingerprint = 0x68a10551e2f20e1a, // fingerprint needs to be manually updated | |
| .{ | |
| .name = "codecrafters_grep", | |
| .fingerprint = 0x68a10551e2f20e1a, // fingerprint needs to be manually updated |
| fn matchPattern(input_line: []const u8, pattern: []const u8) bool { | ||
| if (pattern.len == 1) { | ||
| return std.mem.indexOf(u8, input_line, pattern) != null; | ||
| } else { | ||
| @panic("Unhandled pattern"); | ||
| } | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Improve error handling for multi-character patterns
The current implementation panics when encountering patterns longer than one character. Consider providing a more descriptive error message or implementing proper handling for multi-character patterns.
fn matchPattern(input_line: []const u8, pattern: []const u8) bool {
if (pattern.len == 1) {
return std.mem.indexOf(u8, input_line, pattern) != null;
} else {
- @panic("Unhandled pattern");
+ // TODO: Implement multi-character pattern matching
+ std.debug.print("Error: Only single-character patterns are supported in this stage\n", .{});
+ std.process.exit(1);
}
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| fn matchPattern(input_line: []const u8, pattern: []const u8) bool { | |
| if (pattern.len == 1) { | |
| return std.mem.indexOf(u8, input_line, pattern) != null; | |
| } else { | |
| @panic("Unhandled pattern"); | |
| } | |
| } | |
| fn matchPattern(input_line: []const u8, pattern: []const u8) bool { | |
| if (pattern.len == 1) { | |
| return std.mem.indexOf(u8, input_line, pattern) != null; | |
| } else { | |
| // TODO: Implement multi-character pattern matching | |
| std.debug.print("Error: Only single-character patterns are supported in this stage\n", .{}); | |
| std.process.exit(1); | |
| } | |
| } |
| fn matchPattern(input_line: []const u8, pattern: []const u8) bool { | ||
| if (pattern.len == 1) { | ||
| return std.mem.indexOf(u8, input_line, pattern) != null; | ||
| } else { | ||
| @panic("Unhandled pattern"); | ||
| } | ||
| } |
There was a problem hiding this comment.
Implement proper pattern matching for longer patterns.
The current implementation only handles patterns of length 1 and panics with "Unhandled pattern" for anything longer. This doesn't match grep's functionality which should handle patterns of any length.
Consider implementing a more robust pattern matching approach to handle longer patterns. For example:
fn matchPattern(input_line: []const u8, pattern: []const u8) bool {
if (pattern.len == 1) {
return std.mem.indexOf(u8, input_line, pattern) != null;
} else {
- @panic("Unhandled pattern");
+ // For multi-character patterns
+ return std.mem.indexOf(u8, input_line, pattern) != null;
}
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| fn matchPattern(input_line: []const u8, pattern: []const u8) bool { | |
| if (pattern.len == 1) { | |
| return std.mem.indexOf(u8, input_line, pattern) != null; | |
| } else { | |
| @panic("Unhandled pattern"); | |
| } | |
| } | |
| fn matchPattern(input_line: []const u8, pattern: []const u8) bool { | |
| if (pattern.len == 1) { | |
| return std.mem.indexOf(u8, input_line, pattern) != null; | |
| } else { | |
| // For multi-character patterns | |
| return std.mem.indexOf(u8, input_line, pattern) != null; | |
| } | |
| } |
| + const pattern = args[2]; | ||
| + var input_line: [1024]u8 = undefined; | ||
| + const input_len = try std.io.getStdIn().reader().read(&input_line); | ||
| + const input_slice = input_line[0..input_len]; | ||
| + if (matchPattern(input_slice, pattern)) { | ||
| + std.process.exit(0); | ||
| + } else { | ||
| + std.process.exit(1); | ||
| + } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Enhance to handle multiple lines of input.
The current implementation only processes a single line of input, but grep typically processes multiple lines from a file or stream until EOF is reached.
Consider implementing a loop to read and process input lines until EOF:
const pattern = args[2];
- var input_line: [1024]u8 = undefined;
- const input_len = try std.io.getStdIn().reader().read(&input_line);
- const input_slice = input_line[0..input_len];
- if (matchPattern(input_slice, pattern)) {
- std.process.exit(0);
- } else {
- std.process.exit(1);
- }
+ const stdin = std.io.getStdIn().reader();
+ var found_match = false;
+ var buf = std.ArrayList(u8).init(allocator);
+ defer buf.deinit();
+
+ while (true) {
+ stdin.readUntilDelimiterArrayList(&buf, '\n', 4096) catch |err| {
+ if (err == error.EndOfStream) {
+ break;
+ }
+ return err;
+ };
+
+ if (matchPattern(buf.items, pattern)) {
+ found_match = true;
+ break;
+ }
+
+ buf.clearRetainingCapacity();
+ }
+
+ std.process.exit(if (found_match) 0 else 1);📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| + const pattern = args[2]; | |
| + var input_line: [1024]u8 = undefined; | |
| + const input_len = try std.io.getStdIn().reader().read(&input_line); | |
| + const input_slice = input_line[0..input_len]; | |
| + if (matchPattern(input_slice, pattern)) { | |
| + std.process.exit(0); | |
| + } else { | |
| + std.process.exit(1); | |
| + } | |
| const pattern = args[2]; | |
| const stdin = std.io.getStdIn().reader(); | |
| var found_match = false; | |
| var buf = std.ArrayList(u8).init(allocator); | |
| defer buf.deinit(); | |
| while (true) { | |
| stdin.readUntilDelimiterArrayList(&buf, '\n', 4096) catch |err| { | |
| if (err == error.EndOfStream) { | |
| break; | |
| } | |
| return err; | |
| }; | |
| if (matchPattern(buf.items, pattern)) { | |
| found_match = true; | |
| break; | |
| } | |
| buf.clearRetainingCapacity(); | |
| } | |
| std.process.exit(if (found_match) 0 else 1); |
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