使用Simian工具扫描重复代码

来源：互联网发布：linux脚本文件格式编辑：程序博客网时间：2024/04/28 23:31

工具下载地址：http://www.harukizaemon.com/simian/get_it_now.html

1. simian命令行的格式：

java -jar simian.jar [options] [files]
和
simian.exe [options] [files]

2. Usage: [options] [files]

命令描述 -balanceCurlyBraces[+/-] Accounts for curly braces when breaking lines -balanceParentheses[+/-] Accounts for parentheses when breaking lines -balanceSquareBrackets[+/-] Accounts for square brackets when breaking lines -config=FNAME Reads the configuration from the specifiedfile -defaultLanguage=LANG Assumes files are in the specified language if none can be inferred -excludes=SPEC Excludes files matching the specified pattern -failOnDuplication[+/-/%] Exits with a failure return code if duplication detected -formatter=TYPE[:FNAME] Uses the specified output format when reporting -ignoreBlocks=START:END Ignores all lines between START/END -ignoreCharacterCase[+/-] Matches character literals irrespective of case -ignoreCharacters[+/-] Completely ignores character literals -ignoreCurlyBraces[+/-] Completely ignores curly braces -ignoreIdentifierCase[+/-] Matches identifiers irresepctive of case -ignoreIdentifiers[+/-] Completely ignores identifiers -ignoreLiterals[+/-] Completely ignores all literals (strings, numbers and characters) -ignoreModifiers[+/-] Ignores modifiers (public, private, static, etc.) -ignoreNumbers[+/-] Completely ignores numbers -ignoreOverlappingBlocks[+/-] Ignores blocks that wholly or partially overlap -ignoreRegions[+/-] Ignores all lines between #region/#endregion -ignoreStringCase[+/-] Matches string literals irrespective of case -ignoreStrings[+/-] Completely ignores the contents of strings -ignoreSubtypeNames[+/-] Matches on similar type names (eg. Reader and FilterReader) -ignoreVariableNames[+/-] Completely ignores variable names (fields, parameters and locals) -includes=SPEC Including files matching the specified pattern -language=LANG Assumes ALL files are in the specified language -reportDuplicateText[+/-] Prints the duplicate text in reports -threshold=COUNT Matches will contain at least the specified number of lines

3. 参照下图分5个步骤：

这里写图片描述

打开cmd，cd进入simian-2.3.35文件夹的bin目录；
执行命令java -jar simian-2.35.jar ；
后面可以根据自己的需求添加选择；(如-ignoreVariableNames+ 表示忽略变量名，+号表示要添加这个属性，-号表示不添加这个属性(也可以不写)；-threshold=10 表示10行以上的重复才统计；)
需要扫描的文件的路径E:\...\main\**.java；(**.java表示main文件夹下的所有java文件；)
将统计出来的数据写入生成的duplicates10.txt文件中；(文件名随意，默认生成在simian的bin目录下；)

4. 生成的duplicates10.txt内容：

Similarity Analyser 2.3.35 - http://www.harukizaemon.com/simian
Copyright (c) 2003-2013 Simon Harris. All rights reserved.
Simian is not free unless used solely for non-commercial or evaluation purposes.
// 配置的options选项，如ignoreVariableNames=true, threshold=10等
{failOnDuplication=true, ignoreCharacterCase=true, ignoreCurlyBraces=true, ignoreIdentifierCase=true, ignoreModifiers=true, ignoreStringCase=true, ignoreVariableNames=true, threshold=7}
Found 12 duplicate lines in the following files:
Between lines 64 and 75 in E:…\main\java\com\example\ui\activity\MainActivity.java
Between lines 62 and 73 in E:…\main\java\com\example\ui\activity\MainActivity.java
Found 13 duplicate lines in the following files:
Between lines 81 and 98 in E:…\main\java\com\example\module_widget\widget\Bezier3.java
Between lines 68 and 84 in E:…\main\java\com\example\module_widget\widget\Bezier2.java

……

Found 173 duplicate lines in 19 blocks in 9 files
Processed a total of 1409 significant (2905 raw) lines in 25 files
Processing time: 0.047sec

参考：

《移动App性能评测优化》

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