feat: add Go modules registry support#42
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Add go: and golang: prefixes to fetch Go module source code via proxy.golang.org. Follows the existing registry pattern used by npm, PyPI, and crates.io modules. Usage: opensrc path go:golang.org/x/tools opensrc path golang:github.com/gin-gonic/gin opensrc path go:golang.org/x/tools@v0.43.0 The Go module proxy returns the canonical git repository URL in its Origin field. For modules without Origin data, the URL is derived from the module path. Also adds --go flag to the clean command and Go modules to list output.
Go standard library extension modules (golang.org/x/*) resolve to go.googlesource.com which uses a flat host/repo URL structure. The cache system expects host/owner/repo, so these are rewritten to their official GitHub mirrors at github.com/golang/*.
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| fn module_url(module: &str, version: Option<&str>) -> String { | ||
| let encoded = module.to_lowercase(); | ||
| match version { | ||
| Some(v) => format!("{GO_PROXY}/{encoded}/@v/{v}.info"), |
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Go module proxy URL encoding uses .to_lowercase() instead of proper case encoding, causing incorrect repository URLs for modules with uppercase letters in their paths.
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Summary
Adds
go:andgolang:prefixes to fetch Go module source code via proxy.golang.org. Follows the existing registry pattern used by npm, PyPI, and crates.io.Usage
Also adds
--goflag toopensrc cleanand shows Go modules inopensrc list.Demo
How it works
The Go module proxy at proxy.golang.org returns a JSON response with the canonical git repository URL in its
Origin.URLfield. For golang.org/x/* modules hosted on go.googlesource.com, the URL is rewritten to the official GitHub mirror at github.com/golang/* (the cache system expects host/owner/repo structure).For modules without
Origindata (older versions), the git URL is derived from the module path.Changes
go.rs- New registry module:parse_go_specandresolve_go_modulefollowing the existing patternmod.rs- AddGovariant toRegistryenum,go:andgolang:prefixes, extendparse_package_specandresolve_packagemain.rs- Add--goflag to clean commandlist.rs- Add Go modules to the registries display and empty-state help textTesting
8 new unit tests covering spec parsing, googlesource URL normalization, and module path resolution. All 40 tests pass (38 existing + 2 new googlesource tests + 6 existing Go tests = 40 with
--test-threads=1).This contribution was developed with AI assistance (Claude Code).