匹配3个模式(2个静态模式，一个变量)并更改变量模式

Question

我不知道这是怎么回事，以为我已经安排好了，但没有

我有一个XML文件，其条目如下所示

<compat-change description="Flag {@link android.content.Context#BIND_INCLUDE_CAPABILITIES} is used to pass while-in-use capabilities from client process to bound service. In targetSdkVersion R and above, if client is a TOP activity, when this flag is present, bound service gets all while-in-use capabilities; when this flag is not present, bound service gets no while-in-use capability from client." enableAfterTargetSdk="29" id="136274596" name="PROCESS_CAPABILITY_CHANGE_ID"/>

我需要匹配id和name (总是静态值，并按相同的顺序排列)，但是更改Sdk值(它是可变的)。

Sdk="29" id="136274596" name="PROCESS_CAPABILITY"

我确实试过

sed -i '/Sdk=\"[0-9]\+\".*id="143937733".*name="PROCESS_CAPABILITY"/ {s/Sdk=\"[0-9]\+\"/Sdk=\"0\"/1;}'

任何建议都非常感谢

Answer 1

使用适当的XML工具(如xmlstarlet )会更好，比如

xmlstarlet ed -u '
  //compat-change[@id="136274596"][starts-with(@name,"PROCESS_CAPABILITY")]/@enableAfterTargetSdk
' -v 0 file.xml

例如。

$ xmlstarlet ed -u '//compat-change[@id="136274596"][starts-with(@name,"PROCESS_CAPABILITY")]/@enableAfterTargetSdk' -v 0 file.xml
<?xml version="1.0"?>
<compat-change description="Flag {@link android.content.Context#BIND_INCLUDE_CAPABILITIES} is used to pass while-in-use capabilities from client process to bound service. In targetSdkVersion R and above, if client is a TOP activity, when this flag is present, bound service gets all while-in-use capabilities; when this flag is not present, bound service gets no while-in-use capability from client." enableAfterTargetSdk="0" id="136274596" name="PROCESS_CAPABILITY_CHANGE_ID"/>

请参阅如何在XMLStarlet中筛选多个属性？

Answer 2

使用sed

$ sed -E 's/(Sdk=")[^"]*(" id="136274596" name="PROCESS_CAPABILITY)/\10\2/' input_file
<compat-change description="Flag {@link android.content.Context#BIND_INCLUDE_CAPABILITIES} is used to pass while-in-use capabilities from client process to bound service. In targetSdkVersion R and above, if client is a TOP activity, when this flag is present, bound service gets all while-in-use capabilities; when this flag is not present, bound service gets no while-in-use capability from client." enableAfterTargetSdk="0" id="136274596" name="PROCESS_CAPABILITY_CHANGE_ID"/>