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Vimの検索と置換における数学

時間(分と秒)のファイルがあります。これはおおよそ次のようになります。

02:53 rest of line 1...
03:10 rest of line 2...
05:34 rest of line 3...
05:35 rest of line 4...
10:02 rest of line 5...
...

時間を秒単位の同等の時間に置き換えたいと思います。理想的には、次のような魔法のコマンドを実行したいと思います。

:%s/^\(\d\d\):\(\d\d\) \(.*\)/(=\1*60 + \2) \3/g

...ここで、(=\1*60 + \2)は魔法の部分です。特殊レジスター=を使用して評価結果を挿入できることは知っていますが、正規表現のsubst部分でこれを行う方法はありますか?

27
Philippe

このようなもの?

:%s/^\(\d\d\):\(\d\d\)/\=submatch(1)*60+submatch(2)/

置換が\=で始まる場合、置換は式として解釈されます。

:h sub-replace-expressionは以下にコピーされます

Substitute with an expression           *sub-replace-expression*
                        *sub-replace-\=*
When the substitute string starts with "\=" the remainder is interpreted as an
expression.  This does not work recursively: a substitute() function inside
the expression cannot use "\=" for the substitute string.

The special meaning for characters as mentioned at |sub-replace-special| does
not apply except for "<CR>", "\<CR>" and "\\".  Thus in the result of the
expression you need to use two backslashes to get one, put a backslash before a
<CR> you want to insert, and use a <CR> without a backslash where you want to
break the line.

For convenience a <NL> character is also used as a line break.  Prepend a
backslash to get a real <NL> character (which will be a NUL in the file).

When the result is a |List| then the items are joined with separating line
breaks.  Thus each item becomes a line, except that they can contain line
breaks themselves.

The whole matched text can be accessed with "submatch(0)".  The text matched
with the first pair of () with "submatch(1)".  Likewise for further
sub-matches in ().
33
FDinoff

submatch()を使用して、置換場所のグループ化されたパーツを参照します。

:%s/\v^(\d{2}):(\d{2})>/\=submatch(1) * 60 + submatch(2)/

あなたの例では次のようになります。

173 rest of line 1...
190 rest of line 2...
334 rest of line 3...
335 rest of line 4...
602 rest of line 5...
6
Birei