{"record":{"id":"67b7591baa4ee851","repo":"GitoxideLabs/gitoxide","slug":"cannot-determine-data-type-on-path-without-extensi","errorCode":null,"errorMessage":"Cannot determine data type on path without extension '{}', expecting default extensions 'idx' and 'pack'","messagePattern":"Cannot determine data type on path without extension '(.+?)', expecting default extensions 'idx' and 'pack'","errorType":"exception","errorClass":"anyhow::Error","httpStatus":null,"severity":"error","filePath":"gitoxide-core/src/pack/verify.rs","lineNumber":193,"sourceCode":"                            writeln!(out, \"{}\", index_name.display()).ok();\n                            drop(print_statistics(&mut out, &stats));\n                        }\n                    }\n                    #[cfg(feature = \"serde\")]\n                    Some(OutputFormat::Json) => serde_json::to_writer_pretty(\n                        out,\n                        &multi_index\n                            .index_names()\n                            .iter()\n                            .zip(res.pack_traverse_statistics)\n                            .collect::<Vec<_>>(),\n                    )?,\n                    _ => {}\n                }\n                return Ok(());\n            }\n            _ => {\n                return Err(anyhow!(\n                    \"Cannot determine data type on path without extension '{}', expecting default extensions 'idx' and 'pack'\",\n                    path.display()\n                ));\n            }\n        },\n        ext => return Err(anyhow!(\"Unknown extension {ext:?}, expecting 'idx' or 'pack'\")),\n    };\n    if let Some(stats) = res.1.as_ref() {\n        #[cfg_attr(not(feature = \"serde\"), allow(clippy::single_match))]\n        match output_statistics {\n            Some(OutputFormat::Human) => drop(print_statistics(&mut out, stats)),\n            #[cfg(feature = \"serde\")]\n            Some(OutputFormat::Json) => serde_json::to_writer_pretty(out, stats)?,\n            _ => {}\n        }\n    }\n    Ok(())\n}","sourceCodeStart":175,"sourceCodeEnd":211,"githubUrl":"https://github.com/GitoxideLabs/gitoxide/blob/e73179060badf27222d790981fac3f84c1830a7e/gitoxide-core/src/pack/verify.rs#L175-L211","documentation":"Thrown by `pack_or_pack_index` in the pack verify path when the given path has no file extension at all, so the tool cannot infer whether the input is a pack index (`.idx`) or a pack file (`.pack`). Verification dispatches different logic depending on the extension, so an extensionless path is ambiguous and rejected.","triggerScenarios":"Running `gix pack verify <path>` where `<path>` has no extension, e.g. `gix pack verify ./packfile` or passing a directory-adjacent temp file without a suffix.","commonSituations":"Piped/temp files downloaded without names, copied pack data with the extension stripped, or scripts that pass a directory where the extension match arm falls through to `_`.","solutions":["Pass the file with its real `.idx` or `.pack` extension","Rename the file to include the proper extension, e.g. `mv packfile packfile.pack`","If the path is a directory, ensure it is one the tool supports (dir traversal arm) rather than an extensionless file"],"exampleFix":"// before\ngix pack verify ./tmp/packdownload\n// after\ngix pack verify ./tmp/packdownload.pack","handlingStrategy":"validation","validationCode":"if path.extension().is_none() {\n    return Err(\"pass a file with an explicit .idx or .pack extension\".into());\n}","typeGuard":"fn has_pack_extension(p: &std::path::Path) -> bool {\n    p.extension().map_or(false, |e| e == \"idx\" || e == \"pack\")\n}","tryCatchPattern":null,"preventionTips":["Never strip or rename pack files after downloading; keep original names","In scripts, use `find .git/objects/pack -name '*.pack'` to select inputs"],"tags":["cli","pack","verify","file-extension","gitoxide"],"backgroundTag":"invalid-argument-format","analyzedSha":"e73179060badf27222d790981fac3f84c1830a7e","analyzedAt":"2026-09-08T11:26:50.865Z","contentChangedAt":"2026-09-08T11:26:50.865Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}