Re: upper/lower case

I just finished this parameter version

BTW, speed test was faulty, the testfile had ^M instead of newline. the
loop script takes about 145s vs. 1.2s


#!/bin/bash


INFILE=$1
COL=$2
let "MAXCOL = $COL + 1"
MYCOL="col$COL"

READ="$(seq  -f "col%g" -s " " $MAXCOL)"
WRITE="$(seq  -f "\$col%g" -s "," $MAXCOL)"


while IFS=',' read $READ
do
  eval TARGET="\$$MYCOL"
 
  eval col$COL="\"$(echo "$TARGET" | sed -r 's/(.*)/\L\1/;
s/\<(.)/\u\1/g' )\""
  eval echo  $WRITE

done <  $INFILE >$3

On 12/12/15 21:00, [email protected] [sed-users] wrote:
> Of course the while-loop script can also be made parameter driven:
>  
>
>  #!/bin/sh -u
>  
>
>  c=3;   # column to sed
>  d=\;;   # csv delimiter
>  
>
>  lc_code="$c!b;s/.*/\L&/;s/\<[a-z]/\u&/g";    # sed code to lowercase
>  pr_code="H;1h;\$!d;g;y/\\n/$d/";                # sed code to print line
>  
>
>  while IFS= read -r Line; do
>     set -f;
>     IFS=$d; set X $Line; shift;
>     set X $(printf '%s\n' "$@" | sed -e "$lc_code"); shift;
>     echo "$@" | sed -e "$pr_code";
>  done < input.txt
>
>  
>
>  HTH
>  
>
>  -Rakesh
>  
>
> ---In [email protected], <dgoldman@...> wrote :
>
>  Thanks for doing the speed test. Of course, another disadvantage of the 
>  while-loop script is that it hard codes (a b c d). To my understanding, 
>  the cut-paste script can be totally parameter-driven.
>  
>  Just double-checking: The post shows IFS=',' used for while-loop script. 
>  Was intended IFS=';' used in actual speed test?
>  
>  Daniel
>  
>  On 12/12/2015 12:57 AM, Thierry Blanc [sed-users] wrote:
>  > speed test
>  >
>  > My concerns about a shell while loop were correct. The while-do loop is
>  > much slower.
>  >
>  > 1.079455912 vs. .221387482
>  >
>  >
>  >
>  > while-loop script:
>  >
>  > #!/bin/sh
>  >
>  > START=$(date +%s.%N)
>  > while IFS=',' read a b c d
>  > do
>  > c="$(echo "$c" | sed -r 's/(.*)/\L\1/; s/\<(.)/\u\1/g' )"
>  > echo "$a ; $b ;$c ; $d"
>  >
>  > done < $1 > $2
>  >
>  > END=$(date +%s.%N)
>  > echo "$END - $START" | bc
>  >
>  > #endofscript
>  >
>  > cut-paste script:
>  >
>  > #!/bin/sh
>  >
>  > START=$(date +%s.%N)
>  >
>  > col_to_sed=3
>  >
>  > prev_col=`expr $col_to_sed - 1`
>  > next_col=`expr $col_to_sed + 1`
>  >
>  > cut -d \; -f -$prev_col < $1 > cols_before.txt
>  > cut -d \; -f $col_to_sed < $1 > cols_.txt
>  > cut -d \; -f $next_col- < $1 > cols_after.txt
>  >
>  > sed -e '1b;s/.*/\L&/;s/\<./\u&/g' < cols_.txt > cols_new.txt
>  >
>  > paste -d\; cols_before.txt cols_new.txt cols_after.txt > output.csv
>  >
>  > END=$(date +%s.%N)
>  > echo "$END - $START" | bc
>  >
>  > #endofscript
>  >
>  > 
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
> Posted by: [email protected]
> ------------------------------------
>



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