Re: (ITS#6194) Patch - Enhancement - provide LDIF support as libldif

[rmeggins@redhat.com]

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One thing that a general purpose LDIF parser needs is support for change 
records - for example, the ability to read in a changetype: modify and 
parse the changes into an LDAPMod ** or something like that.  There's 
already code in ldapmodify to do this, it would need to be refactored 
into libldif.

Since the library should be able to parse any sort of LDIF, the parse 
function would have to read in the first couple of lines of each LDIF 
record to determine if it is a plain entry or a change record.  The 
parser would return a struct with a union for the different sets of 
parameters.  The function that parses the LDIF could take a flag (or 
bitmask) that specifies which types of records it expects (e.g. the LDIF 
parser usage in slapadd would want to ignore/error on change records).

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