Open() and encodings

[NARUSES_Yui]

成瀬です。

Dir.open/entries に関連して、open() 絡みの変更案です。

まず、ファイルパスについて、現在はファイルシステムのエンコーディングに関らず、
与えられたバイナリ列をそのままOSに渡していますが、
ファイルシステムのエンコーディングに変換した上で渡した方が親切でしょう。

次に、現在open()はエンコーディングを別にオプションで取ることができません。
これも
open(“filename”, internal_encoding:“EUC-JP”,
external_encoding:“Shift_JIS”)
などと取れたほうが便利ではないでしょうか。
なお、キー名はとりあえずそのまんま長めの名前にしています。
これならば誤解はないであろうし、後でもっと良い名前を思いついたときに変えやすいと思ったので。

このような感じでいかがでしょうか。

[NARUSES_Yui]

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In message “Re: [ruby-dev:34923] open() and encodings”
on Wed, 4 Jun 2008 08:08:54 +0900, “NARUSE, Yui” [email protected]
writes:

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[NARUSES_Yui]

成瀬です。

Yukihiro M. wrote:

「ファイルシステムのエンコーディング」って変換して渡せるほど
ä¿¡é ¼ã§ãã‚‹ã‚‚ã®ãªã‚“ã§ã—ã‚‡ã†ã‹ã€‚å¤‰æ›ã£ã¦ã®ã¯é–“é•ã£ã¦ã‚‹ã¨è‡´å‘½çš„
ですから。

変換で間違えて読めないのは、実際はそこまで致命的ではないと思うのです。
そのようなケースではどのみちどこかで変換したであろうはずで、
ã“ã®å ´åˆã©ã“ã§å¤‰æ›ã—ã¦ã‚‚æ³¨æ„æ·±ãã—ãªã„ã¨èª­ã‚ãªã„ã‚‚ã®ã¯èª­ã‚ãªã„ã‚ã‘ã§ã™ã€‚
ならば、読めるものは楽に読めた方がいいであろうと。

ã©ã¡ã‚‰ã‹ã¨ã„ãˆã°æ°—ã«ã—ã¦ã„ãŸã®ã¯èª­ã‚ã¦ã¯ãªã‚‰ãªã„ã‚‚ã®ã‚’èª­ã‚ã¦ã—ã¾ã†å ´åˆã§ã—ãŸãŒã€
ã“ã¡ã‚‰ã‚‚çµå±€å¤‰æ›ãŒå¿…è¦ãªå ´åˆã«ãŠã‘ã‚‹è„…å¨ã¯å¢—æ¸›ã—ãªã„ã§ã‚ã‚ã†ã¨ã„ã†è¦‹è§£ã§ã™ã€‚

WindowsやOSXではそうなのかもしれませんが、UNIXではかならずし
もそうでもないような。このパッチではlocaleを採用しているよう
ですが、ひとつのファイルシステムで複数のエンコーディングが混
åœ¨ã—ã¦ã„ã‚‹å ´åˆã‚‚ã‚ã‚Šã¾ã™ã‹ã‚‰ã€æ˜Žç¤ºçš„ã«ã‚¨ãƒ³ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ãŒæŒ‡å®š
できないとまずいです。というか、むしろ最初から変換してほしく
ありません。

こちらはUNIXにおけるデフォルトがlocaleでは適切とは言えない、
ということでしょうか。
確かに、RedHat系ですと事実上UTF-8がファイルシステムのエンコーディングと言える
であろう一方で(正確には/etc/sysconfig/i18nで指定)、
Debianや*BSDではシステム全体のエンコーディングはおそらく決定できません。

と、すると、デフォルトは ASCII-8BIT あたりにして変換しない方がいいのですかねぇ。

の導入が先だろうと思います。で、internal_encodingなどに反対
ã™ã‚‹ã‚ã‘ã§ã¯ã‚ã‚Šã¾ã›ã‚“ãŒã€ãã®å ´åˆã«ã¯open_key_argsも同じオ
プションを受け付けるべきでしょうね。

なるほど。
そのように変更してみました。

[NARUSES_Yui]

In article [email protected],
“NARUSE, Yui” [email protected] writes:

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[NARUSES_Yui]

[email protected]$1!#e(B

In message [email protected]
on Thu, 5 Jun 2008 07:16:24 +0900,
“NARUSE, Yui” [email protected] wrote:

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[NARUSES_Yui]

e$B$3$s$K$A$O!"$J$+$`$ie(B(e$B$&e(B)e$B$G$9!#e(B

In message “[ruby-dev:34934] Re: open() and encodings”
on Jun.05,2008 10:47:58, [email protected] wrote:

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[NARUSES_Yui]

¤Þ¤Ä¤â¤È ¤æ¤­¤Ò¤í¤Ç¤¹

In message “Re: [ruby-dev:34931] Re: open() and encodings”
on Thu, 5 Jun 2008 07:16:24 +0900, “NARUSE, Yui” [email protected]
writes:

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In message “Re: [ruby-dev:34935] Re: open() and encodings”
on Thu, 5 Jun 2008 12:51:10 +0900, “U.Nakamura”
[email protected] writes:

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[NARUSES_Yui]

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:34937] Re: open() and encodings”
on Thu, 5 Jun 2008 13:31:39 +0900, “U.Nakamura”
[email protected] writes:

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[NARUSES_Yui]

e$B$3$s$K$A$O!"$J$+$`$ie(B(e$B$&e(B)e$B$G$9!#e(B

In message “[ruby-dev:34936] Re: open() and encodings”
on Jun.05,2008 13:09:20, [email protected] wrote:

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:34935] Re: open() and encodings”
on Thu, 5 Jun 2008 12:51:10 +0900, “U.Nakamura” [email protected] writes:
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[NARUSES_Yui]

e$B$3$s$K$A$O!#?y1:$G$9!#e(B

In Message “[ruby-dev:34945] Re: open() and encodings”
[email protected],
Kazuhiro NISHIYAMA [email protected] said;
e$B3N$+$K!"e(BRedHate$B7O$G$9$H;vee(BUTF-8e$B$,%U%!%$%k%7%9%F%$N%(%s%3!<%G%#%s%[email protected]$($ke(B e$B$G$"$m$&0lJ}$Ge(B([email protected]$K$Oe(B/etc/sysconfig/i18ne$B$G;XDje(B)e$B!"e(B Debiane$B$de(B*BSDe$B$G$O%7%9%F%A4BN$N%(%s%3!<%G%#%s%0$O$*$=$i$/7hDj$G$-$^$;$s!#e(B

e$B:[email protected]$He(BDebiane$B7O$G$be(BRedhate$B7O$N$h$&$Ke(B/etc/default/localee$B$H$$$&$N$,$"$j$^$9!#e(B
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e$B3N$+$K%7%9%F%%0%m!<%P%k$Je(B locale [email protected]_Dj$,F~$k$h$&$K$J$j$^$7$?$,!"$=$l$Oe(B e$BC1$K%G%#%U%)%k%H$H$$$&[email protected]$1$8$c$J$$$G$7$g$&$+!#%f!<%6$,>e=q$-$9$k;v$Oe(B e$BB?$$$G$7$g$&$7!J%7%9%F%$O1Q8l$G!"%f!<%6$OF|K\8l$H$+!K!"e(Blocale
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e$B$H$*$b$$$^$9!#e(B

e$B$?$H$($Pe(B gnome ([email protected]$&$+e(B glib) e$B$Oe(B locale
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[email protected]$J$b$N$Oe(B locale e$B$Ne(B
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e$B$KB7$($F$7$^$$$^$9!#e(B

http://www.gnome.gr.jp/docs/glib-2.8.x-refs/glib/glib-Character-Set-Conversion.html

e$B8D?ME*$K$O$3$3$Oe(B ruby e$BK\BN$G<jEv$9$kNN0h$G$O$J$$$H46$8$^$9!#e(B

[NARUSES_Yui]

e$B1J0f!wCNG=!%6e9)Bg$G$9!%e(B

From: “NARUSE, Yui” [email protected]
Subject: [ruby-dev:34931] Re: open() and encodings
Date: Thu, 5 Jun 2008 07:16:24 +0900
Message-ID: [email protected]

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[NARUSES_Yui]

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[email protected]$N$3$H$b$"$C$FI]$$$N$G$"$^$j4X$o$j$?$/$O$J$$$N$G$9$,!%e(B(^_^)

From: “U.Nakamura” [email protected]
Subject: [ruby-dev:34937] Re: open() and encodings
Date: Thu, 5 Jun 2008 13:31:39 +0900
Message-ID: [email protected]

e$B$G$"$k$+$K4X$o$i$:!“e(B(e$B%7%9%F%8GDj$N%U%!%$%k%7%9%F%%(%s%3!<e(B
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e$B$;$s!#e(B

e$BEDCf$5$s$,e(B [ruby-dev:34933] e$B$G;XE&$5$l$?$h$&$K!$e(B
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[NARUSES_Yui]

[email protected]>;3OB9-$G$9!#e(B

At Thu, 5 Jun 2008 07:16:24 +0900,
NARUSE, Yui wrote:

e$B3N$+$K!"e(BRedHate$B7O$G$9$H;vee(BUTF-8e$B$,%U%!%$%k%7%9%F%$N%(%s%3!<%G%#%s%[email protected]$($ke(B e$B$G$"$m$&0lJ}$Ge(B([email protected]$K$Oe(B/etc/sysconfig/i18ne$B$G;XDje(B)e$B!"e(B Debiane$B$de(B*BSDe$B$G$O%7%9%F%A4BN$N%(%s%3!<%G%#%s%0$O$*$=$i$/7hDj$G$-$^$;$s!#e(B

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[NARUSES_Yui]

e$B$3$s$K$A$O!"$J$+$`$ie(B(e$B$&e(B)e$B$G$9!#e(B

In message “[ruby-dev:34949] Re: open() and encodings”
on Jun.05,2008 19:34:17, [email protected] wrote:

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[NARUSES_Yui]

[email protected]@%$G$9!#e(B

U.Nakamura wrote:

e$B$3$s$K$A$O!"$J$+$`$ie(B(e$B$&e(B)e$B$G$9!#e(B

In message “[ruby-dev:34934] Re: open() and encodings”
on Jun.05,2008 10:47:58, [email protected] wrote:

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[NARUSES_Yui]

[email protected]@%$G$9!#e(B

Tanaka A. wrote:

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e$B$G%Q%9$r<u$1<h$C$?>l9g$OL5JQ49!#e(B

[NARUSES_Yui]

[email protected]@%$G$9!#e(B

Yukihiro M. wrote:

e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:34937] Re: open() and encodings”
on Thu, 5 Jun 2008 13:31:39 +0900, “U.Nakamura” [email protected] writes:

|e$B$"$l!"$3$3$G$Oe(Bopene$B$NOC$G$9$h$M!#e(B

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[NARUSES_Yui]

In message [email protected]
on Thu, 5 Jun 2008 23:35:23 +0900,
“NARUSE, Yui” [email protected] wrote:

Mac OS X e$B$Oe(B UTF8-MAC e$B$G$9$+$iB?J,$"$C$?$[$&$,$$$$$H;W$&$N$G$9$,!"e(B
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[NARUSES_Yui]

e$B1J0f!wCNG=!%6e9)Bg$G$9!%e(B

From: “U.Nakamura” [email protected]
Subject: [ruby-dev:34951] Re: open() and encodings
Date: Thu, 5 Jun 2008 20:27:17 +0900
Message-ID: [email protected]

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