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SpecsIo: OS-created temp directory and OS cache folder helpers - #34

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lm-sousa wants to merge 3 commits into
clava-simplificationfrom
dir-fixes
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lm-sousa wants to merge 3 commits into
clava-simplificationfrom
dir-fixes

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@lm-sousa

@lm-sousa lm-sousa commented Sep 25, 2026 •

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Adds temporary-directory and cache-folder helpers to SpecsIo so callers stop hand-rolling temporary directory names (UUID concat, nanoTime+threadId, fixed cwd-relative names) and stop hardcoding OS cache conventions:

  • SpecsIo.createTempDirectory(prefix): unique directory allocated by the OS under the OS temporary root (/tmp on typical Linux systems)
  • SpecsIo.deleteTempDirectory(directory): deletes that directory and its contents without following symbolic links; reports I/O failures
  • SpecsIo.getOsCacheFolder(): user-level cache folder following OS conventions ($XDG_CACHE_HOME or ~/.cache, ~/Library/Caches, %LOCALAPPDATA%), created if missing
  • SpecsSystem.isMac()

Consumed by specs-feup/clava#265 (stacked work): the parser/weaver/tester now use OS-allocated folders with per-instance ownership (clava #251, #264, #248, #249) and the clang-dumper cache root is unified on getOsCacheFolder() (clava #250).

Tests: new cases in SpecsIoTest (uniqueness, OS temp parent, recursive cleanup, symlink safety, cache folder stability).

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Comment thread SpecsUtils/src/pt/up/fe/specs/util/SpecsIo.java Outdated
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Comment thread SpecsUtils/src/pt/up/fe/specs/util/SpecsIo.java Outdated
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Comment thread SpecsUtils/src/pt/up/fe/specs/util/SpecsIo.java Outdated
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Comment thread SpecsUtils/src/pt/up/fe/specs/util/SpecsIo.java Outdated
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Codex Review: Didn't find any major issues. Already looking forward to the next diff.

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Codex Review: Didn't find any major issues. 🚀

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