On 2010年08月26日 11:02, Zhang Weiwu wrote:
> I always want a tool that:
>
> * Check the whole data file, for each column, find the widest cell.
> * expand the data file, use widest cell for each column.
> * it should know one ideograph counts two characters wide.
>
With awk it also can be done, in fact one line:
$ printf "ab\tcde\nf\tgh\n" > /tmp/test.tsv
$ awk -F $'\t' 'FILENAME != "-" { for (i=1; i<=NF; i++) {max[i] = (length($i) >
max[i] ? length($i) : max[i]); }} FILENAME == "-" {for (i=1; i<=NF; i++) {
printf("%-" max[i] "s ", $i);;} print "";}' /tmp/test.tsv - < /tmp/test.tsv
ab cde
f gh
But my awk one-liner have the fault that is the Chinese ideograph is
counted as one character, not as two character-wide. I don't know a way
to fix that yet.
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