Am 5. Mai 2019 03:53:20 MESZ schrieb "Guo, Yejun" <yejun....@intel.com>:
>
>
>> -----Original Message-----
>> From: ffmpeg-devel [mailto:ffmpeg-devel-boun...@ffmpeg.org] On Behalf
>Of
>> Alexander Strasser
>> Sent: Thursday, May 02, 2019 12:08 AM
>> To: ffmpeg-devel@ffmpeg.org
>> Subject: [FFmpeg-devel] [PATCH 1/2] configure: print_in_columns:
>Replace pr
>> with awk
>>
>> Get rid of pr dependency and write the columns strictly
>> alphabetical for the given rows.
>>
>> Before pr would attempt to write pages, thus if a page
>> boundary was reached, the output looked confusing as one
>> couldn't see there was a new page and the alphabetical
>> order was disrupted when scanning down one of the columns.
>>
>> Fixes output for sizes with width < column width, too.
>>
>> Fixes part of ticket #5680
>>
>> Signed-off-by: Alexander Strasser <eclip...@gmx.net>
>> ---
>> configure | 18 ++++++++++++++++--
>> 1 file changed, 16 insertions(+), 2 deletions(-)
>>
>> diff --git a/configure b/configure
>> index b122b27268..81e3776060 100755
>> --- a/configure
>> +++ b/configure
>> @@ -3831,8 +3831,22 @@ die_unknown(){
>> }
>>
>> print_in_columns() {
>> - cols=$(expr $ncols / 24)
>> - cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
>> + tr ' ' '\n' | sort | tr '\r\n' ' ' | awk -v col_width=24 -v
>width="$ncols" '
>> + {
>> + num_cols = width > col_width ? int(width / col_width) : 1;
>> + num_rows = int((NF + num_cols-1) / num_cols);
>> + y = x = 1;
>> + for (y = 1; y <= num_rows; y++) {
>> + i = y;
>> + for (x = 1; x <= num_cols; x++) {
>> + if (i <= NF) {
>> + line = sprintf("%s%-24s", line, $i);
>
>not sure how to use col_width instead of the magic number 24.
Good catch! Fortunately it's easy to fix:
line = sprintf("%s%-" col_width "s", line, $i);
Will change it locally. Thanks.
Alexander
>> + }
>> + i = i + num_rows;
>> + }
>> + print line; line = "";
>> + }
>> + }' | sed 's/ *$//'
>> }
>>
>> show_list() {
>> --
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