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Fix long path extraction using subst drive mapping instead of \?\ prefix
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WinRAR doesn't support \?\ prefix (interprets it as UNC network path).
Replace with subst drive mapping: maps targetDir to a short drive letter
(Z:, Y:, etc.) before extraction, then removes mapping after. This keeps
total paths under 260 chars even when archives contain deep internal
directory structures.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Sucukdeluxe
2026-03-02 20:32:23 +01:00
co-authored by Claude Opus 4.6
parent 2ae22f942e
commit e013c63c59
3 changed files with 73 additions and 25 deletions
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tests/extractor.test.ts
+3 -5
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@@ -20,15 +20,14 @@ describe("extractor", () => {
expect(overwriteArgs).toContain("-idc");
expect(overwriteArgs.some((value) => /^-mt\d+$/i.test(value))).toBe(true);
expect(overwriteArgs[overwriteArgs.length - 2]).toBe("archive.rar");
const winrarTarget = process.platform === "win32" ? "\\\\?\\C:\\target\\" : "C:\\target\\";
expect(overwriteArgs[overwriteArgs.length - 1]).toBe(winrarTarget);
expect(overwriteArgs[overwriteArgs.length - 1]).toBe("C:\\target\\");
const askArgs = buildExternalExtractArgs("WinRAR.exe", "archive.rar", "C:\\target", "ask", "serienfans.org");
expect(askArgs.slice(0, 4)).toEqual(["x", "-o-", "-pserienfans.org", "-y"]);
expect(askArgs).toContain("-idc");
expect(askArgs.some((value) => /^-mt\d+$/i.test(value))).toBe(true);
expect(askArgs[askArgs.length - 2]).toBe("archive.rar");
expect(askArgs[askArgs.length - 1]).toBe(winrarTarget);
expect(askArgs[askArgs.length - 1]).toBe("C:\\target\\");
const compatibilityArgs = buildExternalExtractArgs("WinRAR.exe", "archive.rar", "C:\\target", "overwrite", "", false);
expect(compatibilityArgs).not.toContain("-idc");
@@ -456,8 +455,7 @@ describe("extractor", () => {
expect(args7z).toContain("-aoa");
expect(args7z).toContain("-p");
expect(args7z).toContain("archive.7z");
const sevenZTarget = process.platform === "win32" ? "-o\\\\?\\C:\\target" : "-oC:\\target";
expect(args7z).toContain(sevenZTarget);
expect(args7z).toContain("-oC:\\target");
});
it("builds 7z args with skip conflict mode", () => {