java - Parsing particular text file java

Question

I have a logcat file from adb. the file is like follwoing,

  09-03 17:12:04.562   479   957 I ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 1230
09-03 17:12:04.687   479  1030 I ActivityManager: Start proc com.amazon.mShop.android for activity com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity: pid=19164 uid=10158 gids={1006, 3003}
09-03 17:12:05.593   479   912 I ActivityManager: Starting: Intent { dat=?paramSuggestionText=cell%20phone flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 17:12:05.796   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +186ms (total +1s119ms)
09-03 17:12:08.601   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity: +3s925ms
09-03 17:12:08.601   479   620 I ActivityManager: Resumed Activity: com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity totalTime: 4037 ms
09-03 17:13:35.742   479   957 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.categoryBrowse.CategoryBrowseActivity } from pid 19164
09-03 17:13:36.007   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.categoryBrowse.CategoryBrowseActivity: +222ms
09-03 17:13:53.328   479   957 I ActivityManager: Starting: Intent { dat=?&paramSuggestionFilters=s%3An%3A%2C%3A4991425011%0As%3An%3A%2C%3A4991426011%0As%3An%3A%2C%3A5088769011%0As%3An%3A%2C%3A5263615011&paramDepartmentName=Programs flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 17:13:53.484   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +145ms
09-03 17:14:54.585   479   484 I ActivityManager: Starting: Intent { cmp=com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity } from pid 19164
09-03 17:14:54.718   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity: +102ms
09-03 17:15:30.210   479   957 I ActivityManager: Starting: Intent { flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:03:02.140   479   967 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x4000000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 19164
09-03 18:03:08.054   479  1005 I ActivityManager: Starting: Intent { dat= flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:03:08.171   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +105ms
09-03 18:04:24.937   479   967 I ActivityManager: Starting: Intent { cmp=com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity } from pid 19164
09-03 18:04:25.046   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity: +92ms
09-03 18:05:00.554   479  5949 I ActivityManager: Starting: Intent { flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:06:43.781   479  1019 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x4000000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 19164
09-03 18:07:12.984   479  1001 I ActivityManager: Starting: Intent { dat= flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:07:13.140   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +135ms
09-03 18:08:29.890   479  5949 I ActivityManager: Starting: Intent { cmp=com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity } from pid 19164
09-03 18:08:29.976   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity: +81ms
09-03 18:09:05.515   479   961 I ActivityManager: Starting: Intent { flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:18:42.132   479  1039 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.categoryBrowse.CategoryBrowseActivity } from pid 19164
09-03 18:18:42.359   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.categoryBrowse.CategoryBrowseActivity: +144ms
09-03 18:19:09.890   479  1030 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x4000000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 19164
09-03 18:19:17.406   479   485 I ActivityManager: Starting: Intent { dat= flg=0x20000 cmp=com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity (has extras) } from pid 19164
09-03 18:19:17.515   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity: +97ms
09-03 18:20:58.500   479  5949 I ActivityManager: Starting: Intent { flg=0x20000 cmp=com.amazon.mShop.android/.search.image.SnapItActivity } from pid 19164
09-03 18:20:58.546   479   967 I ActivityManager: Starting: Intent { cmp=com.amazon.mShop.android/.search.image.SnapItPhotoCaptureActivity } from pid 19164
09-03 18:20:58.898   479   620 I ActivityManager: Displayed com.amazon.mShop.android/.search.image.SnapItPhotoCaptureActivity: +340ms (total +387ms)
09-03 18:21:26.156   479  1039 I ActivityManager: Starting: Intent { cmp=com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity } from pid 19164
09-03 18:21:26.359   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity: +185ms
09-03 18:21:42.750   479   957 W ActivityManager: Duplicate finish request for HistoryRecord{408f9da0 com.amazon.mShop.android/com.amazon.mShop.barcodeSearch.BarcodeFirstTryTipActivity}
09-03 18:26:05.968   479   963 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x4000000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 19164
09-03 18:27:53.515   479   957 I ActivityManager: Starting: Intent { flg=0x10000000 cmp=com.amazon.mShop.android/com.amazon.mobileads.mraid.MraidBrowser (has extras) } from pid 19164
09-03 18:27:54.750   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mobileads.mraid.MraidBrowser: +1s218ms
09-03 18:29:12.726   479   484 I ActivityManager: Starting: Intent { act=intentActionStartActivity flg=0x4000000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity (has extras) } from pid 19164
09-03 18:29:15.609   479  1039 I ActivityManager: Starting: Intent { flg=0x10000000 cmp=com.amazon.mShop.android/com.amazon.mobileads.mraid.MraidBrowser (has extras) } from pid 19164
09-03 18:29:16.882   479   620 I ActivityManager: Displayed com.amazon.mShop.android/com.amazon.mobileads.mraid.MraidBrowser: +1s261ms
09-03 18:32:41.750   479   967 I ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.amazon.mShop.android/com.amazon.mShop.home.HomeActivity } from pid 1230

Now I want to extract the activity name from the file. It is to be extracted from each line similar to this,

09-03 18:29:15.609   479  1039 I ActivityManager: Starting: Intent { flg=0x10000000 cmp=com.amazon.mShop.android/com.amazon.mobileads.mraid.MraidBrowser (has extras) } from pid 19164

or

09-03 17:12:08.601   479   620 I ActivityManager: Resumed Activity: com.amazon.mShop.android/com.amazon.mShop.search.SearchActivity totalTime: 4037 ms

from this line I only need the string com.amazon.mobileads.mraid.MraidBrowser other parts of the line needs to be removed. lines that does not contain Starting:Intent or ActivityManager: Resumed Activity: should be removed.

In the end I will have a sequence of strings like,

com.amazon.mobileads.mraid.MraidBrowser

com.amazon.mShop.search.SearchActivity

and so on depending on their line number.

How can I achieve this? I can use string tokenizer but that is a tedious and inefficient process, regex matching or something similar will be better i think.

score 1 · Accepted Answer

You can try the regex

ActivityManager: (?:Starting: Intent.*?cmp=|Resumed Activity:\s*)(\S+)

Your wanted substring will be stored in group 1.

See it here on Regexr

To use this regex in Java, you have to escape all backslashes, so it should look like

ActivityManager: (?:Starting: Intent.*?cmp=|Resumed Activity:\\s*)(\\S+)

The first part matches the string from "ActivityManager" till the part you want extract and the last part (\\S+) matches then a series of non whitespace characters and stores it in group 1.

score 0 · Accepted Answer

私のアプローチはまったくかわいいとは言えないかもしれませんが、うまくいきます。1つの解決策になります：

String filePath = "res/textfile.txt";
String line;
List<String> myL = new ArrayList<String>();

try {
    BufferedReader read = new BufferedReader(new FileReader(filePath)); 
    while((line = read.readLine()) != null) {
        if(line.contains("Resumed Activity") || line.contains("Starting: Intent")) {
            String str[] = line.split(" ");
            for(String s : str) {
                if(s.contains("com.amazon"))
                    myL.add(s);
            }
        }
    }

    for(String s : myL) {
         System.out.println(s);
    }

} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

更新： あなたの投稿をもう一度読み、ソリューションを更新しました。「ResumedActivity」や「Starting：Intent」などの行を削除する必要があることをどういうわけか見逃しました。

java - Parsing particular text file java

2 に答える 2

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