| Message ID | 1555075443-13468-1-git-send-email-yejun.guo@intel.com |
|---|---|
| State | New |
| Headers | show |
> -----Original Message----- > From: Guo, Yejun > Sent: Friday, April 12, 2019 9:24 PM > To: ffmpeg-devel@ffmpeg.org > Cc: Guo, Yejun <yejun.guo@intel.com> > Subject: [PATCH] configure: sort decoder/encoder/filter/... names in > alphabet order, row by row > > take decoder names an example, with the default page length, shell > command > 'pr' needs two pages for all the decoder names. The names are firstly printed > in the first page, then in the second page. So, as a whole, the names are > sorted neither in column order nor in row order. It's a little confused. > > One method is to calculate the proper page length, so all the names are > printed > in one page by 'pr -l', and so strictly in alphabet order, column by column. > > Another method is to use command printf instead of pr, because buybox > doesn't > have pr. This patch refines print_in_columns to print the names with printf > in alphabet order, row by row. I got an idea to print the names with printf, still column by column, very similar with 'pr -l', will send out the new patch soon.
diff --git a/configure b/configure index f6123f5..2666b4d 100755 --- a/configure +++ b/configure @@ -3828,8 +3828,13 @@ die_unknown(){ } print_in_columns() { - cols=$(expr $ncols / 24) - cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t + width=24 + cols=$(expr $ncols / $width) + eval format="%-${width}s" + content=$(cat | tr ' ' '\n' | sort) + count=$(echo $content | wc -w) + pfmt=$(for c in $(seq 1 $count); do printf '%s' $format; [ $(($c % $cols)) -eq 0 -o $c -eq $count ] && printf '\\n'; done) + printf "$pfmt" $(echo $content) } show_list() {
take decoder names an example, with the default page length, shell command 'pr' needs two pages for all the decoder names. The names are firstly printed in the first page, then in the second page. So, as a whole, the names are sorted neither in column order nor in row order. It's a little confused. One method is to calculate the proper page length, so all the names are printed in one page by 'pr -l', and so strictly in alphabet order, column by column. Another method is to use command printf instead of pr, because buybox doesn't have pr. This patch refines print_in_columns to print the names with printf in alphabet order, row by row. Signed-off-by: Guo, Yejun <yejun.guo@intel.com> --- configure | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)