如何将文本块移动到范围的末尾(使用sed)？

Question

因为我搜索了这么多次，都找不到一个简单的(故障安全)解决方案。

问题

考虑下面的代码片段。其中，我想将块BLOCK_ONE移动到范围RANGE_END的末尾。

if(condition)
    string(RANGE_BEGIN          # RANGE_BEGIN
        "$<$<BLOCK_ONE>:"       # BLOCK_ONE BEGIN
            "Boost::system;"
            "Boost::filesystem;"
        ">"                     # BLOCK_ONE END
        "$<$<BLOCK_TWO>:"
            "otherlib;"
            "somelib;"
        ">" 
        "$<$<BLOCK_THREE>:"
            "comctl32;"
        ">"
    )                           # RANGE_END
elseif(othercondition)
    string(RANGE_BEGIN          # RANGE_BEGIN
        "$<$<BLOCK_ONE>:"       # BLOCK_ONE BEGIN
            "pthread;"
            "Zlib::minizip;"
        ">"                     # BLOCK_ONE END
        "$<$<BLOCK_FOUR>:"
            "somelib;"
        ">"
    )                           # RANGE_END
endif()

目标

if(condition)
    string(RANGE_BEGIN          # RANGE_BEGIN
        "$<$<BLOCK_TWO>:"
            "otherlib;"
            "somelib;"
        ">" 
        "$<$<BLOCK_THREE>:"
            "comctl32;"
        ">"
        "$<$<BLOCK_ONE>:"       # BLOCK_ONE BEGIN
            "Boost::system;"
            "Boost::filesystem;"
        ">"                     # BLOCK_ONE END
    )                           # RANGE_END
elseif(othercondition)
    string(RANGE_BEGIN          # RANGE_BEGIN
        "$<$<BLOCK_FOUR>:"
            "somelib;"
        ">"
        "$<$<BLOCK_ONE>:"       # BLOCK_ONE BEGIN
            "pthread;"
            "Zlib::minizip;"
        ">"                     # BLOCK_ONE END
    )                           # RANGE_END
endif()

Answer 1

警告:如果BLOCK_ONE为而不是 found，这将无法正常工作。(它会将括号移动到范围内的下一个括号。)

下面是我使用的解决方案：

sed '/RANGE_BEGIN/,/)/{     # Do the following within given range (/BEGIN/,/END/)
        /BLOCK_ONE/,/">"/{  # Do the following within given range (/BEGIN/,/END/)
            /BLOCK_ONE/h    # BLOCK_ONE containing line: overwrite hold space with it
            /BLOCK_ONE/!H   # BLOCK_ONE non-containing line: append it to hold space
            d               # Delete what you read (past tense)
        }
        /)/{                # End of RANGE
            x               # eXchange pattern with hold space 
                            # (replace the line with everything you collected before, 
                            # keeping the replaced line in hold space)
            G               # Add newline and Get the line we saved with x printed
        }
}' InputFile.cmake

对于喜欢一句话的人，这里就是：

sed '/RANGE_BEGIN/,/)/{/BLOCK_ONE/,/">"/{/BLOCK_ONE/h;/BLOCK_ONE/!H;d};/)/{x;G}}' InFile

Answer 2

这可能适用于您(GNU sed)：

sed -n '/BLOCK_ONE/{h;:a;n;H;/">"/!ba;:b;n;/)/!{p;bb};H;x};p' file

聚焦于包含BLOCK_ONE的一行，然后在等待空间中收集更多行，直到包含">"的行。继续打印一行，直到一行包含)，然后将该行附加到保留空间，交换到保留空间，并打印这些行。所有其他行都会照常打印。