lib.Uri: Fix local path edge cases #84
2026-09-05
lib.Uri: Fix path join for empty authority
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__new_with_path() joins base and path with exactly one '/', assuming a
trailing '/' in base is a path separator. That assumption breaks for
URIs with empty authority, where scheme_plus_authority ends in '://'
(e.g. 'file:///tmp/x'): new_replace_path('/etc/hosts') drops the
leading slash of the path and produces 'file://etc/hosts', which
parses with hostname 'etc' and path '/hosts' instead of path
'/etc/hosts'.
Treat a base ending in '://' separately and keep a leading slash in
the path, adding one if it is missing.
Assisted-by: unsloth/Qwen3.8-27B-GGUF:Q4_K_M with pi.dev v0.84.2
Signed-off-by: Jan Lindemann <jan@janware.com>
lib.Uri: Fix __assemble(): No '://' for relative paths
Assembling a scheme-bearing form always writes '://' after the scheme, even if the input has no authority part. For a schemeless relative path such as '../../local/path', .full then becomes 'file://../../local/path', which re-parses with '..' as the host and '/../local/path' as the path, both entirely broken. Fix __assemble() to write a bare ':' instead of '://' when the input has no host and a relative path, so the assembled form re-parses back to the same relative path: full of '../../local/path' is now 'file:../../local/path'. Absolute paths and forms with an authority are unchanged. The assembled 'file:../../local/path' form is a valid URI under the RFC 3986 generic grammar (scheme with a rootless path), while RFC 8089's file URI ABNF admits only an empty or an absolute path. Uri thus trades RFC 8089 conformance for RFC 3986 compatibility: a relative path survives the full-and-reparse cycle unchanged. Assisted-by: unsloth/Qwen3.8-27B-GGUF:Q4_K_M with pi.dev v0.84.2 Signed-off-by: Jan Lindemann <jan@janware.com>