带多行段的sed条件分支

我第一次尝试用sed替换多行。我在那里（和）找到了几个好的指针。将其用作启动程序，我有以下命令：

sed '
/<dependency>/,/<\/dependency>/ { # Find a set of lines for a dependency
    s/\(<artifactId>\)m[^<]*\(<\/artifactId>\)/\1ARTIFACTID\2/ # Substitute if artifactId starts with 'm'
    t depend-update # If we substituted, go to depend-update.  Otherwise, continue
    :depend-unchanged
    s/\(<groupId>\)[^<]*\(<\/groupId>\)/\1CHANGE_A\2/ # Change groupId to have 'A'
    b # branch to end
:depend-update
    s/\(<groupId>\)[^<]*\(<\/groupId>\)/\1CHANGE_B\2/ # Change groupID to have 'B'
    b # branch to end
}
' \
inputfile.xml

sed'
//，//{#为依赖项查找一组行
s/\（\）m[^多行是由于在strem/文件输入上逐行而不是作为一个整体使用sed工作的“问题”。
在您的情况下，您处理一组线，但仍然是一次一行，而不是一个块

/startBlock/，/EndBlock/mean just，处理这两个分隔符内的所有行，而不是将块分组到一个大块中

以下是拟议的适应化修改

sed '
/<dependency>/,\#</dependency># {
# load into the buffer
    /<dependency>/ h;/<dependency>/ !H
    \#</dependency># {
# At end of block, load the buffer and work on it
    g

# Find a set of lines for a dependency
        s/\(<artifactId>\)m[^<]*\(<\/artifactId>\)/\1ARTIFACTID\2/ # Substitute if artifactId starts with 'm'
        t depend-update # If we substituted, go to depend-update.  Otherwise, continue
:depend-unchanged
        s/\(<groupId>\)[^<]*\(<\/groupId>\)/\1CHANGE_A\2/ # Change groupId to have 'A'
# branch to end
        b # branch to end
:depend-update
        s/\(<groupId>\)[^<]*\(<\/groupId>\)/\1CHANGE_B\2/ # Change groupID to have 'B'
# branch to end
        b
        }
    }
' \
inputfile.xml

sed'
//,\## {
#加载到缓冲区中
//h；/！h
\## {
#在块的末尾，加载缓冲区并处理它
G
#为依赖项查找一组行
s/\（\）m[^
        <dependency>
            <groupId>CHANGE_A</groupId>
            <artifactId>test.a</artifactId>
        </dependency>
        <dependency>
            <groupId>CHANGE_A</groupId>
            <artifactId>ARTIFACTID</artifactId>
        </dependency>
        <dependency>
            <groupId>CHANGE_A</groupId>
            <artifactId>test.b</artifactId>
        </dependency>

sed '
/<dependency>/,\#</dependency># {
# load into the buffer
    /<dependency>/ h;/<dependency>/ !H
    \#</dependency># {
# At end of block, load the buffer and work on it
    g

# Find a set of lines for a dependency
        s/\(<artifactId>\)m[^<]*\(<\/artifactId>\)/\1ARTIFACTID\2/ # Substitute if artifactId starts with 'm'
        t depend-update # If we substituted, go to depend-update.  Otherwise, continue
:depend-unchanged
        s/\(<groupId>\)[^<]*\(<\/groupId>\)/\1CHANGE_A\2/ # Change groupId to have 'A'
# branch to end
        b # branch to end
:depend-update
        s/\(<groupId>\)[^<]*\(<\/groupId>\)/\1CHANGE_B\2/ # Change groupID to have 'B'
# branch to end
        b
        }
    }
' \
inputfile.xml