Fossil

  int nFile;            /* Number of F cards */
  int nFileAlloc;       /* Slots allocated in aFile[] */
  int iFile;            /* Index of current file in iterator */
  ManifestFile *aFile;  /* One entry for each F-card */
  int nParent;          /* Number of parents. */
  int nParentAlloc;     /* Slots allocated in azParent[] */
  char **azParent;      /* UUIDs of parents.  One for each P card argument */
  int nCherrypick;      /* Number of entries in aCherrypick[] */
  struct {            
    char *zCPTarget;    /* UUID of cherry-picked version w/ +|- prefix */
    char *zCPBase;      /* UUID of cherry-pick baseline. NULL for singletons */
  } *aCherrypick;
  int nCChild;          /* Number of cluster children */
  int nCChildAlloc;     /* Number of closts allocated in azCChild[] */
  char **azCChild;      /* UUIDs of referenced objects in a cluster. M cards */
  int nTag;             /* Number of T Cards */
  int nTagAlloc;        /* Slots allocated in aTag[] */
  struct { 
    char *zName;           /* Name of the tag */

  if( p ){
    blob_reset(&p->content);
    free(p->aFile);
    free(p->azParent);
    free(p->azCChild);
    free(p->aTag);
    free(p->aField);
    free(p->aCherrypick);
    if( p->pBaseline ) manifest_destroy(p->pBaseline);
    memset(p, 0, sizeof(*p));
    fossil_free(p);
  }
}

/*

                               p->nParentAlloc*sizeof(char*));
          }
          i = p->nParent++;
          p->azParent[i] = zUuid;
        }
        break;
      }

      /*
      **     Q (+|-)<uuid> ?<uuid>?
      **
      ** Specify one or a range of checkins that are cherrypicked into
      ** this checkin ("+") or backed out of this checkin ("-").
      */
      case 'Q': {
        if( (zUuid = next_token(&x, &sz))==0 ) goto manifest_syntax_error;
        if( sz!=UUID_SIZE+1 ) goto manifest_syntax_error;
        if( zUuid[0]!='+' && zUuid[0]!='-' ) goto manifest_syntax_error;
        if( !validate16(&zUuid[1], UUID_SIZE) ) goto manifest_syntax_error;
        n = p->nCherrypick;
        p->nCherrypick++;
        p->aCherrypick = fossil_realloc(p->aCherrypick,
                                 p->nCherrypick*sizeof(p->aCherrypick[0]));
        p->aCherrypick[n].zCPTarget = zUuid;
        p->aCherrypick[n].zCPBase = zUuid = next_token(&x, &sz);
        if( zUuid ){
          if( sz!=UUID_SIZE ) goto manifest_syntax_error;
          if( !validate16(zUuid, UUID_SIZE) ) goto manifest_syntax_error;
        }
        break;
      }

      /*
      **     R <md5sum>
      **
      ** Specify the MD5 checksum over the name and content of all files
      ** in the manifest.
      */

<blockquote>
<b>B</b> <i>baseline-manifest</i><br>
<b>C</b> <i>checkin-comment</i><br>
<b>D</b> <i>time-and-date-stamp</i><br>
<b>F</b> <i>filename</i> <i>SHA1-hash</i> <i>permissions</i> <i>old-name</i><br>
<b>P</b> <i>SHA1-hash</i>+<br>
<b>Q</b> (<b>+</b>|<b>-</b>)<i>SHA1-hash ?SHA1-hash?</i><br>
<b>R</b> <i>repository-checksum</i><br>
<b>T</b> (<b>+</b>|<b>-</b>|<b>*</b>)<i>tag-name  <b>*</b> ?value?</i><br>
<b>U</b> <i>user-login</i><br>
<b>Z</b> <i>manifest-checksum</i>
</blockquote>

A manifest may optionally have a single B-card.  The B-card specifies

hexadecimal SHA1 of the predecessor manifest.  All arguments
to the P-card must be unique to that line.
The first predecessor is the direct ancestor of the manifest.
Other arguments define manifests with which the first was
merged to yield the current manifest.  Most manifests have
a P-card with a single argument.  The first manifest in the
project has no ancestors and thus has no P-card.

A manifest has zero or more Q-cards.  A Q-card is similar to a P-card
in that it defines a predecessor to the current check-in.  But
whereas a P-card defines the immediate ancestor or a merge
ancestor, the Q-card is used to identify a single check-in or a small
range of check-ins which were cherry-picked for inclusion in or
exclusion from the the current manifest.  The first argument of
the Q-card is the artifact ID of another manifest (the "target")
which has had its changes included or excluded in the current manifest.  
The target is preceeded by "+" or "-" to show inclusion or
exclusion, respectively.  The optional second argument to the
Q-card is another manifest artifact ID which is the "baseline"
for the cherry-pick.  If omitted, the baseline is the primary
parent of the target.  The
changes included or excluded consist of all changes moving from
the baseline to the target.  

The Q-card was added to the interface specification on 2011-02-26.  
Older versions of Fossil will reject manifests that contain Q-cards.

A manifest may optionally have a single R-card.  The R-card has
a single argument which is the MD5 checksum of all files in 
the check-in except the manifest itself.  The checksum is expressed
as 32-characters of lowercase hexadecimal.   The checksum is
computed as follows:  For each file in the check-in (except for
the manifest itself) in strict sorted lexicographical order, 

</tr>
<tr>
<td><b>P</b> <i>uuid ...</i></td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
</tr>
<tr>
<td><b>Q</b> (<b>+</b>|<b>-</b>)<i>uuid uuid</i></td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
</tr>
<tr>
<td><b>R</b> <i>md5sum</i></td>
<td align=center><b>X</b></td>