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Apple公式ガイドさっくりまとめ ファイルシステム編
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Atsushi Uchida (utwang)
September 24, 2015
Programming
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43
Apple公式ガイドさっくりまとめ ファイルシステム編
Apple公式ガイドのさっくりまとめ
Atsushi Uchida (utwang)
September 24, 2015
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Transcript
͍·͞ΒAppleެࣜΨΠυΛ ͬ͘͞ΓͱಡΜͰ·ͱΊͯΈͨ ʙ ϑΝΠϧγεςϜϓϩάϥϛϯάΨΠυฤ ʙ 2015/9/24
͡Ίʹ • υΩϡϝϯτಡΜͰ·ͱΊͨࢿྉͰ͢ɻ࣮ࡍʹίʔυॻ ͍ͯಈ͔ͨ͠Θ͚Ͱͳ͍ͷͰਖ਼֬Ͱͳ͍هड़͋Δ ͔ͱࢥ͍·͢ɻ
͜ͷΨΠυͷओͳ༰ • σΟϨΫτϦߏ • iOSɺOSXͷڞ௨υΩϡϝϯτ • iCloudͱͷΓͱΓ(ׂѪ) • ϑΝΠϧΞΫηεํ๏ •
ϑΝΠϧཧɺૢ࡞ͷγεςϜΠϯλʔϑΣʔε • ҆શͳΞΫηεɺඇಉظΞΫηε
جຊతͳฤ • ϢʔβϑΝΠϧγεςϜʹ ΞΫηεͰ͖ͳ͍ • iOSΞϓϦʹαϯυϘοΫεੜ • όϯυϧίϯςφ • σʔλίϯςφ
• Documents • Library • Temp • iCloudίϯςφ
ϑΝΠϧΞΫηε • ϑΝΠϧΞΫηε͢ΔͨΊͷΠϯλʔϑΣʔε͕͍ͭ͘ ༻ҙ͞Ε͍ͯΔ • όϯυϧσΟϨΫτϦ • NSBundleΫϥε • ඪ४σΟϨΫτϦʢDocuments,LibraryͳͲʣ
• NSFileManagerΫϥε
ϑΝΠϧཧɺૢ࡞ • σΟϨΫτϦɺϑΝΠϧͷ࡞ɺίϐʔɺҠಈɺআͳͲͷج ຊతͳૢ࡞͕Մೳ • NSFileManagerΫϥε͕ఏڙ • createFileAtPath • copyItemAtURL
• moveItemAtURL • removeItemAtURL
ෳϓϩηεͰͷϑΝΠϧར༻ • ϑΝΠϧγεςϜશϓϩηε/εϨουͰڞ༗ • ڝ߹͠ͳ͍Α͏ʹϑΝΠϧίʔσΟωʔλͱϓϨθϯλʔ ͰϑΝΠϧมߋΛཧʢiCloudυΩϡϝϯτɺiPhone - Apple Watchͷσʔλ࿈ܞʣ •
iOSͰαϯυϘοΫεͷ֎ͷϑΝΠϧʹΞΫηε͢Δ έʔεʢϝσΟΞϑΝΠϧϢʔβυΩϡϝϯτʣͰ UIDocumentΫϥεΛ͏
ϑΝΠϧಡΈॻ͖ • ඇಉظॲཧ • ετϦʔϜॲཧʢNSOutputStream / NSInputStreamʣ • GCD(OSϨϕϧͷεϨουཧ) •
dispatch_xxxͷॲཧ • ಉظॲཧ • NSFileHandle (ҰൠతͳϑΝΠϧopen/close)
ϑΝΠϧͷίϯςφ • ϝϞϦʹϑΝΠϧΛอ࣋͢ΔɻυΩϡϝϯτΦϒδΣΫ τͷϑΝΠϧຒΊࠐΈɺը૾ͱͯ͠ͷදࣔʢදࣔঢ়ଶͰ ͷฤूʣ • ϑΝΠϧϥούʔ • σΟϨΫτϦϥούʔ •
ϦϯΫϥούʔ • URLɺύεͱͻ͔ͮͳ͍ϑΝΠϧͱͯ͠ѻ͑Δ
ύϑΥʔϚϯε • ΨΠυʹύϑΥʔϚϯεʹؔͯ͠ͷҰൠతͳνΣοΫ߲ ͷهࡌ͋Γ • zero-fillͱ͍͏ηΩϡϦςΟͷΈ͕ύϑΥʔϚϯεʹ Өڹ͢Δ͜ͱ͋ΔΒ͍͠