137 lines
4.8 KiB
Bash
137 lines
4.8 KiB
Bash
#! /bin/bash
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#
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# original from:
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# vtree: visual directory tree
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# @(#) vtree.sh 1.1 91/07/01
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# 90/04 john h. dubois iii (john@armory.com)
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# 91/07/01 fixed bug that caused problems when dir given on command line,
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# added some info to help, changed to 4-space indenting
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#
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# conversion to bash v2 syntax done by Chet Ramey
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#
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help=\
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"Syntax: vtree [startdir] [namelen=#] [linelen=#]
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If startdir is not specified, tree will start at current dir.
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namelen specifies the minimum number of characters of a directory name that
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are guaranteed to be printed.
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This is a tradeoff between the number of tree levels that can fit on a
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screen line and the number of chars of each dir name that can be printed.
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In most cases it will be possible to print more than namelen characters of
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the name (a name up to namelen+1 chars will always be printed in full),
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but in some cases truncation down to namelen chars will occur.
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If truncation occurs, a '>' is printed at the end of the name.
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namelen=8 (the default) typically causes about 5 dirs/1000 to be truncated.
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namelen=7 typically causes about 10 dirs/1000 to be truncated.
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namelen=8 will allow 6 full length dirs to be printed in 79 columns.
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namelen=7 will allow 7 full length dirs to be printed in 79 columns;
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linelen specifies the maximum number of characters to print on one screen
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line. All characters beyond this are truncated. The default is 1024.
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To avoid line wrap on an 80 column terminal with autowrap, use linelen=79.
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"
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for i in "$@"; do
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case $i in
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-h) echo "$help"; exit;;
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*=*)
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vars="$vars $i"
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;;
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*)
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if [ ! -x $i -o ! -d $i ]; then # arg must be a dir and executable
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echo "$i: directory not accessible."
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exit
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fi
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cd $i
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;;
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esac
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shift
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done
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pwd # print path of root of tree
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# find all directories depth first; ignore permission errors
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find . -type d -print 2> /dev/null | \
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gawk -F/ '
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# Do this block for NR == 1 instead of BEGIN because command line var
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# assignments are not done until after BEGIN block is executed.
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NR == 1 {
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if (namelen)
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MaxLen = namelen;
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else
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MaxLen = 8;
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if (!linelen)
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linelen = 1024
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HSpace = substr(" ",1,MaxLen); # used to indent tree
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n = 0; # number of dirs found on one major branch
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}
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$0 != "." { # do for every line produced by find except tree root dir
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if (NF == 2 && n > 0) # print major branch whenever a new one starts
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list();
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Depth[n] = NF - 1; # record depth and name of dir
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Name[n++] = $NF;
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}
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END {
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list() # print last major branch
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}
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function list() {
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Line = Name[0]; # initialize first line of branch to be branch base
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for (i = 1; i < n; i++) { # for each name in major branch
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if (Depth[i] == Depth[i-1] + 1)
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AddHLink(); # if moving deeper into branch, use same line
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else {
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print substr(Line,1,linelen); # last line is done; print it
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Line = ""; # start new line
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# print indentation, vert links, and vert/horiz links
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for (d = 1; d < Depth[i] - 1; d++) # for each level of indentation
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# if a vert. link has been established for this level
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if (VLink[d])
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Line = Line HSpace " | ";
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else # print empty indentation
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Line = Line HSpace " ";
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# Print last part of vert. link
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if (VLink[d] == i) {
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VLink[d] = 0; # mark level for no vert link
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Line = Line HSpace " \\--";
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}
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else
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Line = Line HSpace " |--";
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}
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Line = Line Name[i]; # Add dir name to line
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}
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print substr(Line,1,linelen); # print last line of major branch
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n = 0; # reset name counter
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}
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function AddHLink() {
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NDepth = Depth[i]; # Depth of this name
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VLink[NDepth - 1] = 0;
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# search until a name found at a level less than this one
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for (j = i + 1; j < n && Depth[j] >= NDepth; j++)
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# keep track of last name that VLink should connect to
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if (Depth[j] == NDepth)
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VLink[NDepth - 1] = j;
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if (VLink[NDepth - 1]) {
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NLine = substr(Line,1,(NDepth - 2) * (MaxLen + 4) + MaxLen + 1);
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if (length(NLine) < length(Line))
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Line = substr(NLine,1,length(NLine) - 1) ">"
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else
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Line = NLine;
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Line = Line substr("--------------+--",
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18 - ((NDepth - 1) * (MaxLen + 4) - length(Line)));
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}
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else {
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NLine = substr(Line,1,(NDepth - 2) * (MaxLen + 4) + MaxLen + 3);
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if (length(NLine) < length(Line))
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Line = substr(NLine,1,length(NLine) - 1) ">"
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else
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Line = NLine;
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Line = Line substr("-----------------",
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1,(NDepth - 1) * (MaxLen + 4) - length(Line));
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}
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}
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' $vars
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