Initial commitv1.2

1 files changed, 91 insertions, 0 deletions

diff --git a/scripts/config_functions.sh b/scripts/config_functions.sh
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+## Copyright 2015 Ian Jauslin
+## 
+## Licensed under the Apache License, Version 2.0 (the "License");
+## you may not use this file except in compliance with the License.
+## You may obtain a copy of the License at
+## 
+##     http://www.apache.org/licenses/LICENSE-2.0
+## 
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+
+################################################################################################
+##                                                                                            ##
+##                      Functions used to manipulate configuration files                      ##
+##                                                                                            ##
+################################################################################################
+
+
+# remove unwanted entries in configuration files (read fromm stdin)
+function strip_config {
+  tostrip="$1"
+
+  # whether to skip the entry
+  skip=0
+
+  # whether this is the first entry
+  first_entry=1
+
+  # read file
+  while read aline; do
+    # if line is a header
+    if [[ "$aline" =~ ^#! ]]; then
+      # check whether to strip
+      for header in $tostrip; do
+	if [[ "$aline" = "$header" ]]; then
+	  skip=1
+	  break
+	fi
+      done
+
+      # add a '&' separator
+      if [[ "$skip" = 0 && "$first_entry" = 0 ]]; then
+	echo "&"
+      fi
+      [[ "$skip" = 0 ]] && first_entry=0
+    fi
+
+    # change entry
+    if [[ "$aline" = "&" ]]; then
+      skip=0
+    # write out if not instructed to skip
+    elif [[ $skip = 0 ]]; then
+      echo "$aline"
+    fi
+
+  done
+}
+
+# find a config entry in a file (read from stdin)
+function find_config_entry {
+  header="$1"
+
+  # whether the entry was found
+  foundit=0
+
+  # read stdin
+  while read aline; do
+    # write out if the header was found
+    if [[ $foundit = 1 ]]; then
+      if [[ "$aline" != "&" ]]; then
+	echo "$aline"
+      fi
+    fi
+
+    # check the header
+    if [[ "$aline" = "$header" ]]; then
+      foundit=1
+    fi
+
+    # new entry
+    if [[ "$aline" = "&" ]]; then
+      if [[ "$foundit" = 1 ]]; then
+	break
+      fi
+    fi
+  done
+}
+