mork数据库

hechengjin

https://developer.mozilla.org/en-US/search?q=mork firemail中邮件存储相关的msf文件和通讯录存储用的都是mork数据库 https://wiki.mozilla.org/Mork https://wiki.mozilla.org/Examples_of_various_Address_Book_formats Model The basic Mork content model is a table (or synonymously, a sparse matrix) composed of rows containing cells,where each cell is a member of exactly one column (col). Each cell is one attribute in a row. The name of the attribute is a literal designating the column, and the content of the attribute is the value. The content value of a cell is either a literal (lit) or a reference (ref). Each ref points to a lit or row or table, so a a cell can "contain" another shared object by reference. 稀疏矩阵（sparse matrix）: 矩阵中非零元素的个数远远小于矩阵元素的总数，并且非零元素的分布没有规律，则称该矩阵为稀疏矩阵(sparse matrix)；与之相区别的是，如果非零元素的分布存在规律（如上三角矩阵、下三角矩阵、对称矩阵），则称该矩阵为特殊矩阵。 < - open angle - begins a dict (inside a dict, begins metainfo row) > - close angle - ends a dict [ - open bracket - begins a row (inside a row, begins metainfo row) ] - close bracket - ends a row { - open brace - begins a table (inside a table, begins metainfo row) } - close brace - ends a table ( - open paren - begins a cell ) - close paren - ends a cell ^ - up arrow - dereference following id for literal value r - lower r - dereference following oid for row (by ref) value t - lower t - dereference following oid for table (by ref) value : - colon - next value is scope namespace for preceding id = - equals - begin a literal value inside a cell + - plus - add update: insert content - - minus - cut update: remove content ! - bang - put update: clear and set content A Mork implementation should have more than one map -- one for each scope is needed. But version 1.4 of Mork only uses two scopes: a for atom literals and c for column literals. The former, a, is the default scope for idss in a dict, unless explicitly changed to the latter by a metadict containing a (atomScope=c) cell. all cols default to scope c and all slots default to scope a. oid ( object identity)   composed of two parts: id and scope octet sequence  字节序列 panacea.dat    https://wiki.mozilla.org/User:Em ... ssageincomingserver