__ini_value: add space detection on insert

This detection tires to somehow inteligent places the new entry at the
end of the section, but tires to not infer with existing comments for
the section etc.

This detection is not perfect but will work in some cases. Hope it helps
(if someone whats to look at these files after they got edited).

This currently only applies to the `present` state, but not to the
`commented` state. This will be changed somehow when both scripts will
be unifed cause of there great similarities.

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

@@ -1,7 +1,7 @@
 BEGIN {
     bufindex = -1
     buflen = 0
-    maxbuflen = 2
+    maxbuflen = 10
 
     # no section means the start to the first section
     if(section == "") {
@@ -15,9 +15,13 @@ function flush_buffer() {
     while(buflen > 0)
         _pop_line()
 }
+function flush_lines(n) {
+    while(buflen > 0 && n-- > 0)
+        _pop_line()
+}
 function push_line() {
     linebuf[++bufindex] = $0
-    buflen++;
+    buflen++
     while(buflen > maxbuflen) _pop_line()
 }
 function revert_line() {
@@ -41,8 +45,8 @@ function _pop_line() {
 function is_comment(line) {
     # get character and check
     line_sign = substr(line, 1, 1)
-    for(i in comment_signs)
-        if(line_sign == comment_signs[i])
+    for(c in comment_signs)
+        if(line_sign == comment_signs[c])
             return 1
 
     # nothing found
@@ -85,6 +89,10 @@ found {print; next}
                     found=1
 
                     # %codeblock_insert%
+
+                    # print line as it would else only be populated below
+                    print
+                    next
                 }
                 is_curr_section = 0
             }
@@ -101,7 +109,7 @@ found {print; next}
 
             # check for a delimiter and a key (must be at first position due to trimming)
             if((idel = index(line, delimiter)) && (ikey = index(line, key)) == 1) {
-                # check there are only spaces between the delimiter
+                # check there are only spaces between the key and delimiter
                 if(check_spaces(substr(line, ikey + length(key), idel - (length(key) + 1)))) {
                     found = 1
 

cdist/conf/type/__ini_value/files/parts/present/insert.awk

@@ -1,9 +1,56 @@
-was_com_there = was_comment(lastline(), comment)
+# check if there is a comment block before the section
+firstline_index = bufindex - (buflen - 1)
+insertpoint = -1  # the insertpoint marks the point before the insert
+lastfreespace = -1
+for(i = bufindex; i >= firstline_index; i--) {
+    _line = trim(linebuf[i])
+    if(_line == "") {
+        lastfreespace = i
+        continue
+    }
+    if(comment && was_comment(_line, comment)) {
+        insertpoint = i + 1
+        no_insert_comment = 1
+        if(lastfreespace != insertpoint)
+            insert_line_after = 1
+        break
+    }
+    if(!is_comment(_line) || index(_line, delimiter) > 0) {
+        insertpoint = i + 1
+
+        # only insert a line before if we do not have a space around
+        if(lastfreespace == insertpoint)
+            insertpoint++
+        else
+            insert_line_before = 1
+        # check for empty line after the insert point
+        # use absolute boundary cause the insertpoint can be changed
+        if(trim(linebuf[i + 2]) != "")
+            insert_line_after = 1
+        break
+    }
+}
+
+# insert into the last free space
+if(insertpoint == -1) {
+    if(lastfreespace != -1) {
+        insertpoint = lastfreespace
+        insert_line_before = 1
+    }
+    else {
+        insertpoint = firstline_index
+        insert_line_after = 1
+    }
+}
+
+# print lines before
+flush_lines(insertpoint - firstline_index)
+
 
 # print before and comment
-flush_buffer()
-if(comment && !was_com_there) c_print()
-
-# print value + seperator line at the end
+if(insert_line_before) print ""
+if(comment && !no_insert_comment) c_print()
 v_print()
-print ""
+if(insert_line_after) print ""
+
+flush_buffer()