Turns out Linux has a shred command in /usr/bin and its purpose is to over-write files so we don't want to invoke it accidentally. So as not to cause confusion and issues we will rename ours to "shredder". Aussies are of course allowed to alias this to "shredda".

2014-06-18 17:04:19 -07:00
parent c16b403cf7
commit dd042f4f09
4 changed files with 2 additions and 1 deletions
--- a/util/shredder/JSON.sh
+++ b/util/shredder/JSON.sh
@@ -0,0 +1,129 @@
+# The MIT License
+#
+# Copyright (c) 2011 Dominic Tarr
+#
+# Permission is hereby granted, free of charge,
+# to any person obtaining a copy of this software and
+# associated documentation files (the "Software"), to
+# deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify,
+# merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom
+# the Software is furnished to do so,
+# subject to the following conditions:
+#
+# The above copyright notice and this permission notice
+# shall be included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+# ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+#
+# https://github.com/dominictarr/JSON.sh
+#
+throw () {
+  echo "$*" >&2
+  exit 1
+}
+
+tokenize () {
+  local ESCAPE='(\\[^u[:cntrl:]]|\\u[0-9a-fA-F]{4})'
+  local CHAR='[^[:cntrl:]"\\]'
+  local STRING="\"$CHAR*($ESCAPE$CHAR*)*\""
+  local NUMBER='-?(0|[1-9][0-9]*)([.][0-9]*)?([eE][+-]?[0-9]*)?'
+  local KEYWORD='null|false|true'
+  local SPACE='[[:space:]]+'
+  egrep -ao "$STRING|$NUMBER|$KEYWORD|$SPACE|." --color=never |
+    egrep -v "^$SPACE$"  # eat whitespace
+}
+
+parse_array () {
+  local index=0
+  local ary=''
+  read -r token
+  case "$token" in
+    ']') ;;
+    *)
+      while :
+      do
+        parse_value "$1" "$index"
+        let index=$index+1
+        ary="$ary""$value" 
+        read -r token
+        case "$token" in
+          ']') break ;;
+          ',') ary="$ary," ;;
+          *) throw "EXPECTED , or ] GOT ${token:-EOF}" ;;
+        esac
+        read -r token
+      done
+      ;;
+  esac
+  value=`printf '[%s]' "$ary"`
+}
+
+parse_object () {
+  local key
+  local obj=''
+  read -r token
+  case "$token" in
+    '}') ;;
+    *)
+      while :
+      do
+        case "$token" in
+          '"'*'"') key=$token ;;
+          *) throw "EXPECTED string GOT ${token:-EOF}" ;;
+        esac
+        read -r token
+        case "$token" in
+          ':') ;;
+          *) throw "EXPECTED : GOT ${token:-EOF}" ;;
+        esac
+        read -r token
+        parse_value "$1" "$key"
+        obj="$obj$key:$value"        
+        read -r token
+        case "$token" in
+          '}') break ;;
+          ',') obj="$obj," ;;
+          *) throw "EXPECTED , or } GOT ${token:-EOF}" ;;
+        esac
+        read -r token
+      done
+    ;;
+  esac
+  value=`printf '{%s}' "$obj"`
+}
+
+parse_value () {
+  local jpath="${1:+$1,}$2"
+  case "$token" in
+    '{') parse_object "$jpath" ;;
+    '[') parse_array  "$jpath" ;;
+    # At this point, the only valid single-character tokens are digits.
+    ''|[^0-9]) throw "EXPECTED value GOT ${token:-EOF}" ;;
+    *) value=$token ;;
+  esac
+  printf "[%s]\t%s\n" "$jpath" "$value"
+}
+
+parse () {
+  read -r token
+  parse_value
+  read -r token
+  case "$token" in
+    '') ;;
+    *) throw "EXPECTED EOF GOT $token" ;;
+  esac
+}
+
+if [ $0 = $BASH_SOURCE ];
+then
+  tokenize | parse
+fi