New INI parser

The parser is added to the existing module.
The old parsing functuion will be removed when we
switch to the new interface.

Parser logic:
* There is one high level function that wraps the
  parser interface. It is at the bottom of the module.
  ini_parse_config();
* Internally it creates a perser object
  and then runs parser on it.
* At the end parser object is destroyed.
* This object stores the state of the parser.
* The parser has an action queue
* There are several actions that parser can perform
  - read line
  - inspect read line
  - record an error
  - process last comment in the file (POST)
* Each action handler determines what to do next
  depending upon what has happened.
* Read handler reads lines and enqueues inspection action
  in case of success or error action in case of failure.
* Inspection action parses last read line and
  treats it either is a:
  * Comment
  * Section
  * New key + value
  * Continuation of the value
  In case of error the error action is enqueued.
* Error can be fatal or non fatal. It depend on the error_level
  flag passed in. If the error is non fatal the read action is
  enqueued otherwise parser stops.
* The POST action is a special action to handle comment at
  the bottom of the file. The comment is stored with the
  value it preceeds so in case there is a comment at
  the bottom of the file a special value needs to be created
  to hold just the comment.

1 files changed, 6 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index 906a183..10c4062 100644
--- a/configure.ac
+++ b/configure.ac
@@ -47,6 +47,12 @@ AC_CHECK_FUNC([strcasestr],
                         [Define if strcasestr exists]),
               AC_MSG_ERROR("Platform must support strcasestr"))
 
+AC_CHECK_FUNC([getline],
+              AC_DEFINE([HAVE_GETLINE],
+                        [1],
+                        [Define if getline() exists]),
+              AC_MSG_ERROR("Platform must support getline()"))
+
 AC_DEFINE([COL_MAX_DATA], [65535], [Max length of the data block allowed in the collection value.])
 
 AC_DEFINE([MAX_KEY], [1024], [Max length of the key in the INI file.])