__ini_value: add delimiter space detection

This adds spaces around the delimiter to provide some flexibility than
just do it in the delimiter string directly. It can be set via the
parameter `--delimiter-space`.

cdist/conf/type/__ini_value/explorer/state

@@ -48,6 +48,7 @@ BEGIN {
     getline delimiter < (_param "delimiter")
     getline value < (_param "value")
     getline indentation < (_param "indentation")
+    getline delimiter_space < (_param "delimiter-space")
 
     do_normalization = (system("test -f " (_param "normalize")) == 0)
 
@@ -108,10 +109,9 @@ found_section {
             # must only contain spaces
             else start_spaces = ikey - 1
         }
-        # start_spaces set or 0
 
         idelspace_start = ikey + length(key)
-        idelspace_length = idel - (idelspace_start)
+        idelspace_length = idel - idelspace_start
         # check for delimiter is only preceded with spaces
         if(idelspace_length == 0 || check_spaces(substr(line, idelspace_start, idelspace_length))) {
             found = 1
@@ -129,8 +129,16 @@ found_section {
             else {
                 # check if the format is important
                 if(do_normalization) {
+                    if(match(found_value, /^[ \t]+/) == 1) {
+                        found_value = substr(found_value, 1 + RLENGTH)
+                        del_val_spacelen = RLENGTH
+                    }
+                    else
+                        del_val_spacelen = 0
+
                     # the format must exactly match, else it is incorrect
-                    if(indentation != start_spaces || idelspace_length != 0 || found_value != is_value)
+                    if(start_spaces != indentation || found_value != is_value ||
+                        idelspace_length != delimiter_space || del_val_spacelen != delimiter_space)
                         state("wrongformat")
                 }
 

cdist/conf/type/__ini_value/files/common.awk

@@ -6,9 +6,14 @@ BEGIN {
     value = get_param_string("value")
     comment = get_param_string("comment")
     indentation = get_param_string("indentation")
+    delimiter_space = get_param_string("delimiter-space")
 
     get_param_array("comment-sign", comment_signs)
     comment_sign = comment_signs[0]
+
+    base_spaces = spaces(indentation)
+    delimiter_spaces = spaces(delimiter_space
+    delimiter_w_spaces = (delimiter_spaces delimiter delimiter_spaces)
 }
 
 function trim(var) {
@@ -16,6 +21,12 @@ function trim(var) {
     sub(/[ \t]*$/, "", var)
     return var
 }
+function spaces(a) {
+    rspaces = ""
+    for(b = 0; b < a; b++)
+        rspaces = (rspaces " ")
+    return rspaces
+}
 function check_spaces(part) {
     return match(part, /^[ \t]*$/) == 1
 }
@@ -40,22 +51,13 @@ function get_param_array(name, arr) {
 
 # print value
 function v_print() {
-    spaces = ""
-    for(i = 0; i < indentation; i++)
-        spaces = (spaces " ")
-    printf "%s%s%s%s%s", spaces, key, delimiter, value, ORS
+    printf "%s%s%s%s%s", base_spaces, key, delimiter_w_spaces, value, ORS
 }
 # print commented value
 function v_print_commented() {
-    spaces = ""
-    for(i = 0; i < indentation; i++)
-        spaces = (spaces " ")
-    printf "%s%s%s%s%s%s", spaces, comment_sign, key, delimiter, value, ORS
+    printf "%s%s%s%s%s%s", base_spaces, comment_sign, key, delimiter_w_spaces, value, ORS
 }
 # print comment
 function c_print() {
-    spaces = ""
-    for(i = 0; i < indentation; i++)
-        spaces = (spaces " ")
-    printf "%s%s%s%s%s", spaces, comment_sign, " ", comment, ORS
+    printf "%s%s%s%s%s", base_spaces, comment_sign, " ", comment, ORS
 }

cdist/conf/type/__ini_value/man.rst

@@ -63,6 +63,14 @@ comment-sign
     parameters are possible. It uses the first specified sign as comment
     character if this type needs to insert comments.
 
+delimiter-space
+    The number of spaces before and after the delimiter which should be free.
+    This number applies to each site of the delimiter separately, so one space
+    means one space to the left and right side of the delimiter.
+
+    The delimiter will be matched independendtly of this parameter and will
+    only be corrected if ``--normalize`` is set.
+
 
 BOOLEAN PARAMETERS
 ------------------

cdist/conf/type/__ini_value/parameter/optional

@@ -4,3 +4,4 @@ state
 value
 indentation
 comment
+delimiter-space