|
|
Help with Aligning the content of a txt file
06-13-2012
06-14-2012
# https://www.unix.com/shell-programming-scripting/188853-help-aligning-content-txt-file.html
{ NR>1 && FNR==1 ? l=length($0) && a[i++]= "\n" $0 : a[i++]=$0 }
#1 NR>1 && FNR==1 -> If total number of rows is more than 1 and the row of the current input file is 1 than
#2 ? l=length($0) -> reset the variable l (see help text #9) and assign the length of the current row ($0) to (l)
#3 && a[i++]= "\n" $0 -> and (&&) add the current line plus the line break ("\n") to the array (a[i++]) which will be automatically incremented with the plus (++) by 1 (=i++)
#4 : a[i++]=$0 -> else (:) if not (NR>1 && FNR==1) than add the current line to the array (a)
{if(NR>1 && FNR==1) for(e=(i-c);e<=(i-1);e++) b[e]=d ;c=FNR; d=l }
#5 if(NR>1 && FNR==1) -> Check again if the total number of rows of all input files is more than 1 and current line number equal 1
#6 for(e=(i-c);e<=(i-1);e++) b[e]=d -> do a loop with the variable (e) to fill a second array (b[e]) with the longest line of the current file. This array (b[e]) has the same amount of elements as the array (a[++i]).
#7 c=FNR -> assign the number of lines of the current file to the variable (c) for later use
#8 d=l -> assign the current length to the variable (d) for later use
{ if( length($0) > l) l=length($0)+1 }
#9 if( length($0) > l) l=length($0)+1 -> check the longest line of the current file and assign the length to the variable (l)
END{for(e=(i-c+1);e<=i;e++) b[e]=d; for(j=1;j<=i;j++) printf("%-"b[j]"s,",a[j-1] )}
#10 for(e=(i-c+1);e<=i;e++) b[e]=d -> do the last loop on the last input file to fill the array (b) to adjust the field to the longest line
#11 for(j=1;j<=i;j++) -> do a loop (j) to print out the array (a[j]) and the lengths of the longest lines (b[j])
#12 printf("%-"b[j]"s,",a[j-1] ) -> print out the elements of the array (a[j-1]) with the blank filled format according to the longest line from the array (b[j])
06-18-2012
|
|
|
|