user-tools/fzf-preview

   1 #!/bin/bash
   2
   3 inode=$1
   4
   5 if [ "$inode" = 1 ]
   6 then
   7         # it's a mountpoint.
   8         filename=$2
   9         path="$FZF_PREVIEW_DIRECTORY/$filename"
  10 else
  11         # note, possibly this `find` does not yield the same file which given to us,
  12         # due to hardlinks, but generally it does not alter previewing much.
  13         path=`find "$FZF_PREVIEW_DIRECTORY" -maxdepth 1 -inum "$inode" -print -quit`
  14
  15         # filename contains the "-> target" part if it's a symlink to "target"
  16         #filename=${filename%% -> *}
  17 fi
  18
  19 mime=`file -bL --mime-type "$path"`
  20
  21
  22 ornate_per_line()
  23 {
  24         local ansi_codes=$1
  25         local ansi_reset=`tput sgr0`
  26         local line
  27         while read -r line
  28         do
  29                 echo -n "$ansi_codes$line$ansi_reset"
  30                 echo
  31         done
  32 }
  33
  34 strip_ctrl_chars()
  35 {
  36         sed -e 's/\[\x00-\x1F\x7F\]//g'
  37 }
  38
  39 concat_major_minor()
  40 {
  41         # concat char- and block-special file's major and minor device numbers
  42         # to unite their respective columns.
  43         # note, we keep all the spaces before the major and minor numbers,
  44         # although this is one space more than needed to pad off the previous column,
  45         # but other files (not char- or block-special ones) in the directory are
  46         # also padded to account the one extra space after the comma between the major
  47         # and the minor numbers.
  48         sed -e 's/^\([cb]\S\+\s\+\S\+\s\+\)\([0-9]\+\),\(\s\+\)\([0-9]\+\)/\1\3\2:\4/'
  49 }
  50
  51 reorder_ls_columns()
  52 {
  53         # remove permissions and n_links columns and
  54         # put date and time before size.
  55         sed -e "s/\(\S\+\s\+\S\+\)\(\s\+\S\+\)\s\+\(\S\+\s\+\S\+\)/\3\2/"
  56 }
  57
  58
  59 xattrs=`getfattr --physical --dump --encoding=text "$path" 2>/dev/null`
  60 if [ -n "$xattrs" ]
  61 then
  62         ansi_codes=`tput bold; tput setaf 5`
  63         echo "$xattrs" | ornate_per_line "$ansi_codes"
  64 fi
  65
  66 acls=`getfacl --physical --omit-header --skip-base --absolute-names "$path" 2>/dev/null`
  67 if [ -n "$acls" ]
  68 then
  69         ansi_codes=`tput bold; tput setaf 3`
  70         echo "$acls" | ornate_per_line "$ansi_codes"
  71 fi
  72
  73
  74 case "$mime" in
  75 application/pdf)
  76         pdftotext -layout "$path" -
  77         ;;
  78 application/*)
  79         echo $mime
  80         file -bL "$path"
  81         ;;
  82 image/*)
  83         identify "$path"
  84         ;;
  85 video/*|audio/*)
  86         mediainfo "$path"
  87         ;;
  88 message/rfc822)
  89         emlv "$path" | fold -w "$FZF_PREVIEW_COLUMNS" -s
  90         ;;
  91 *)
  92         if [ -d "$path" ]
  93         then
  94                 ls -lAhgo ${LS_SORT_FLAGS[$LS_SORT_ORDER]} --time-style=long-iso --indicator-style=slash --color=always "$path/" |\
  95                 lines 2-EOF |\
  96                 concat_major_minor |\
  97                 reorder_ls_columns
  98         elif [ -c "$path" -o -p "$path" ]
  99         then
 100                 file "$path"
 101         else
 102                 head -n ${FZF_PREVIEW_LINES:--0} "$path" | strip_ctrl_chars
 103         fi
 104         ;;
 105 esac