slashcommand

slashcommand

Package slashcommand provides a parser for slash commands commonly used in AI coding assistants.

Overview

This package parses slash commands using bash-like argument parsing. The parser can find slash commands anywhere in the input text, not just at the beginning:

/task-name arg1 "arg 2" arg3

The parser extracts:

• Task name: The command identifier (without the leading /)
• Arguments: Positional arguments accessed via $ARGUMENTS, $1, $2, $3, etc.
• Found status: Boolean indicating whether a slash command was found

Arguments are parsed like bash:

• Quoted arguments (single or double quotes) can contain spaces
• Quotes are removed from parsed arguments
• Escape sequences are supported in double quotes (\")
• Arguments are extracted until end of line

Installation

go get github.com/kitproj/coding-context-cli/pkg/slashcommand

Usage

import "github.com/kitproj/coding-context-cli/pkg/slashcommand"

// Parse a simple command
taskName, params, found, err := slashcommand.ParseSlashCommand("/fix-bug")
// taskName: "fix-bug"
// params: map[]
// found: true

// Parse a command with arguments
taskName, params, found, err := slashcommand.ParseSlashCommand("/fix-bug 123")
// taskName: "fix-bug"
// params: map["ARGUMENTS": "123", "1": "123"]
// found: true

// Parse a command with quoted arguments
taskName, params, found, err := slashcommand.ParseSlashCommand(`/code-review "Fix login bug" high`)
// taskName: "code-review"
// params: map["ARGUMENTS": "\"Fix login bug\" high", "1": "Fix login bug", "2": "high"]
// found: true

// Command found in middle of text
taskName, params, found, err := slashcommand.ParseSlashCommand("Please /deploy production now")
// taskName: "deploy"
// params: map["ARGUMENTS": "production now", "1": "production", "2": "now"]
// found: true

// No command found
taskName, params, found, err := slashcommand.ParseSlashCommand("No command here")
// taskName: ""
// params: nil
// found: false

Command Format

Basic Structure

/task-name arg1 "arg 2" arg3 ...

Argument Parsing Rules

1. Slash commands can appear anywhere in the input text
2. Task name comes immediately after the / (no spaces)
3. Arguments are extracted until end of line (newline stops argument collection)
4. Arguments can be quoted with single (') or double (") quotes
5. Quoted arguments can contain spaces
6. Quotes are removed from parsed arguments
7. Double quotes support escape sequences: \"
8. Single quotes preserve everything literally (no escapes)
9. Text before the / is ignored (prefix lost)
10. Text after a newline is ignored (suffix lost)

Returned Parameters

The params map contains:

• ARGUMENTS: The full argument string (with quotes preserved)
• 1, 2, 3, etc.: Individual positional arguments (with quotes removed)

Valid Examples

/fix-bug                           # No arguments
/fix-bug 123                       # Single argument: $1 = "123"
/deploy staging v1.2.3             # Two arguments: $1 = "staging", $2 = "v1.2.3"
/code-review "PR #42"              # Quoted argument: $1 = "PR #42"
/echo 'He said "hello"'            # Single quotes preserve quotes: $1 = "He said \"hello\""
/echo "He said \"hello\""          # Escaped quotes in double quotes: $1 = "He said \"hello\""
Please /fix-bug 123 today          # Command in middle: task = "fix-bug", $1 = "123", $2 = "today"
Text /deploy prod\nNext line       # Arguments stop at newline: task = "deploy", $1 = "prod"

Cases with No Command Found

fix-bug                    # Missing leading /: found = false
No command here            # No slash: found = false

Error Handling

The parser returns errors only for malformed commands (e.g., unclosed quotes). If no slash command is found, the function returns found=false without an error.

// No command found - not an error
_, _, found, err := slashcommand.ParseSlashCommand("No command here")
// found: false, err: nil

// Unclosed quote - returns error
_, _, found, err := slashcommand.ParseSlashCommand(`/fix-bug "unclosed`)
// found: false, err: "unclosed quote in arguments"

API

ParseSlashCommand

func ParseSlashCommand(command string) (taskName string, params map[string]string, found bool, err error)

Parses a slash command string and extracts the task name and arguments. The function searches for a slash command anywhere in the input text.

Parameters:

• command (string): The text that may contain a slash command

Returns:

• taskName (string): The task name without the leading /
• params (map[string]string): Contains ARGUMENTS (full arg string) and 1, 2, 3, etc. (positional args)
• found (bool): True if a slash command was found, false otherwise
• err (error): Error if the command format is invalid (e.g., unclosed quotes)

Testing

The package includes comprehensive tests covering:

• Commands without arguments
• Commands with single and multiple arguments
• Quoted arguments (both single and double quotes)
• Escaped quotes
• Empty quoted arguments
• Commands embedded in text (prefix/suffix text)
• Commands with newlines
• Edge cases and error conditions

Run tests with:

go test -v ./pkg/slashcommand

License

This package is part of the coding-context-cli project and is licensed under the MIT License.