Principle:Ollama Ollama Modelfile Parsing
| Knowledge Sources | |
|---|---|
| Domains | Parsing, Configuration |
| Last Updated | 2026-02-14 00:00 GMT |
Overview
A line-oriented parser that transforms Modelfile text into a structured command list, handling multi-line strings, heredocs, comments, and directive validation.
Description
Modelfile Parsing is the process of converting the human-authored Modelfile DSL into a structured data format suitable for programmatic processing. The parser must handle various text formats: single-line values, triple-quoted multi-line strings, heredoc syntax, inline and block comments, and whitespace normalization.
The parser validates directive names, resolves relative file paths for ADAPTER directives, and constructs an ordered list of commands that preserves the declaration sequence from the original file.
Usage
Use this parsing approach when implementing a Dockerfile-like DSL parser that must support multi-line values, be robust against varied user formatting, and produce a clean command list for downstream processing.
Theoretical Basis
The parser operates line by line:
- Line Reading: Read each line from the input reader.
- Comment Stripping: Remove lines starting with '#' and inline comments.
- Directive Detection: Split the line into command name (first word) and arguments (remainder).
- Multi-line Handling: If arguments start with triple quotes (""") or heredoc (<<), accumulate lines until the closing delimiter.
- Path Resolution: For ADAPTER and FROM directives with file paths, resolve relative to the Modelfile location.
- Command Building: Create a Command struct with Name and Args for each directive.
- Validation: Verify FROM is present and directive names are recognized.