正規表現苦手なんです... - Speaker Deck

正規表現苦手なんです...

by Nobuyuki Nishiyama

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3FHFY'FTUB ਖ਼نදݱۤखͳΜͰ͢ʜ ΅ͬͪήʔϜσϕϩού ੢ࢁ৴ߦɹ

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͸͡Ίʹ ͑Β͍ͱ͜ʹདྷͪ·ͬͨͩʜ

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ࠓճͷ͓୊

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ਖ਼نදݱͱͷग़ձ͍ ΨϥέʔͷαΠτΛ࡞͍ͬͯΔ࣌ʹ ʮೖྗ͞Εͨจࣈྻ͸ϝʔϧΞυϨε͔ʁʯ Λ൑ఆ͢Δඞཁ͕ੜͨ͡ʂ

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ਖ਼نදݱͱͷग़ձ͍ ։ൃݴޠ͸1FSMɻ

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ਖ਼نදݱͱͷग़ձ͍ ʮ1FSMϝϞʯͱ͍͏αΠτͰݟͭ ͚ͨʂ IUUQXXXEJOPSKQdPI[BLJQFSMIUN

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No content

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$mail_regex = q{(?:[^(\040)<>@,;:".\\\\\[\]\000-\037\x80-\xff]+(?![^(\040)<>@,;:".\\\\} . q{\[\]\000-\037\x80-\xff])|"[^\\\\\x80-\xff\n\015"]*(?:\\\\[^\x80-\xff][} . q{^\\\\\x80-\xff\n\015"]*)*")(?:\.(?:[^(\040)<>@,;:".\\\\\[\]\000-\037\x} . q{80-\xff]+(?![^(\040)<>@,;:".\\\\\[\]\000-\037\x80-\xff])|"[^\\\\\x80-} . q{\xff\n\015"]*(?:\\\\[^\x80-\xff][^\\\\\x80-\xff\n\015"]*)*"))*@(?:[^(} . q{\040)<>@,;:".\\\\\[\]\000-\037\x80-\xff]+(?![^(\040)<>@,;:".\\\\\[\]\0} . q{00-\037\x80-\xff])|\[(?:[^\\\\\x80-\xff\n\015\[\]]|\\\\[^\x80-\xff])*} . q{\])(?:\.(?:[^(\040)<>@,;:".\\\\\[\]\000-\037\x80-\xff]+(?![^(\040)<>@,} . q{;:".\\\\\[\]\000-\037\x80-\xff])|\[(?:[^\\\\\x80-\xff\n\015\[\]]|\\\\[} . q{^\x80-\xff])*\]))*};

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Ҿ͍ͨɻ

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ٸ͕͹ճΕ

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ٸ͕͹ճΕ ࢼߦࡨޡͭͭ͠ɺ )5.-λάͷॻ͖׵͑ͱ͔ɺ จࣈྻஔ׵ͱ͔͕Ͱ͖ΔΑ͏ʹͳͬͨʂ

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ָ͘͠ͳ͖ͬͯͨॴͰ ͦͷޙ1FSM͔Β཭Εɺ 0CKFDUJWF$΍$Ͱॻ͘ɻ

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&NBDTͰ࢖͏΋͙͢๨ΕΔʜ

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$ʹͯਖ਼نදݱαϙʔτʂ

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ਖ਼نදݱͷ࢓༷͕Θ͔ΒΜʜ

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ௐࠪΛଓ͚ͨ݁Ռ &$."4DSJQUͷਖ਼نදݱͷ࢓༷ ͱ΄΅ಉ͡Β͍͠ʜ

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&$."4DSJQUͬͯԿʁ

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࠷ۙ+BWB4DSJQUҊ݅Λܦͯ Α͏΍͘ཧղʹࢸͬͨʂ

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.%/࠷ߴͰ͢

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࢓༷͸ͳΜͱͳ͘Θ͔ͬͨ

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·ͩ͜ΕΛॻ͚Δؾ͕͠ͳ͍ $mail_regex = q{(?:[^(\040)<>@,;:".\\\\\[\]\000-\037\x80-\xff]+(?![^(\040)<>@,;:".\\\\} . q{\[\]\000-\037\x80-\xff])|"[^\\\\\x80-\xff\n\015"]*(?:\\\\[^\x80-\xff][} . q{^\\\\\x80-\xff\n\015"]*)*")(?:\.(?:[^(\040)<>@,;:".\\\\\[\]\000-\037\x} . q{80-\xff]+(?![^(\040)<>@,;:".\\\\\[\]\000-\037\x80-\xff])|"[^\\\\\x80-} . q{\xff\n\015"]*(?:\\\\[^\x80-\xff][^\\\\\x80-\xff\n\015"]*)*"))*@(?:[^(} . q{\040)<>@,;:".\\\\\[\]\000-\037\x80-\xff]+(?![^(\040)<>@,;:".\\\\\[\]\0} . q{00-\037\x80-\xff])|\[(?:[^\\\\\x80-\xff\n\015\[\]]|\\\\[^\x80-\xff])*} . q{\])(?:\.(?:[^(\040)<>@,;:".\\\\\[\]\000-\037\x80-\xff]+(?![^(\040)<>@,} . q{;:".\\\\\[\]\000-\037\x80-\xff])|\[(?:[^\\\\\x80-\xff\n\015\[\]]|\\\\[} . q{^\x80-\xff])*\]))*};

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ͱݴ͏༁Ͱʜ ೔ʑͷ܇࿅ํ๏ͱ͔ίπͱ͔ ڭ͍͑ͯͩ͘͞ʂ

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w5XJUUFS!NJOHBNF w'BDFCPPLNJOHBNF w(JU)VCUFLOJTIJ ͓͠·͍ ΞϓϦ޷ධ഑৴தʂ