I tried to get Eclipse to convert all of the tabs in my project to spaces like this:
Java Editor:
Click Window » Preferences
Expand Java » Code Style
Click Formatter
Click the Edit button
Click the Indentation tab
Under General Settings, set Tab policy to: Spaces only
Click OK ad nauseum to apply the changes.
And now my code is formatted without any indentations within if and for blocks, like this:
private void addAppointment(Resource resource) {
if (resource != null) {
Appt appt1 = new Appt();
appt1.setTime(new Date());
resource.setAppointment(appt1);
}
}
I really don't want to have to manually fix this in the hundreds of files in the project, how can I format to indent within if and for blocks in the whole project?
I should also say that the "Statements within blocks" checkbox in the active Formatter profile is checked. The preview it shows has a for block with an indented body, so I have no idea why that isn't being applied to my project.
#gnac provides some good options, in addition to:
Similarly you can use ctrl+shift+f (Source->Format) on each class to format it on the fly
You can select the project(s) and do Source menu -> Format to format everything in that project in one go. (No keyboard shortcut for it AFAIK.)
So once you set your formatting options you have a couple of options. You can set the preferences to format your files when saving.
Preferences->Java->Editor->Save Actions
However, if you have a lot of files this will be a pain as well. Similarly you can use ctrl+shift+f (Source->Format) on each class to format it on the fly, again having to do it on each file individually.
Inside Eclipse you can use Search->Find, enter "\t" in the text box and select the "Regular Expression" check box and then click the "Replace..." button. When the search is done, it will ask you what to replace it with. Enter 4 spaces into the "With" text field. Click Preview to see what it will do, or OK to make the changes.
I would use a find and sed to find all of the java files in a directory and replace the tabs, although this is outside of eclipse
find -iname ".java" -exec sed -i.orig 's/\t/ /g' {} +
If you're not on Linux you could use cygwin to do the same on Windows.
Consider a Java while-loop without a body, for example this:
while (map.values().remove(value));
When formatting it (Shift + Alt + F), Eclipse breaks the line before the semicolon and indents it:
while (map.values().remove(value))
;
How can I configure the formatter to not add these line breaks?
Be aware that by setting this semicolon to a new line, you may avoid unintended endless loops and a long search to find them.
However, in Eclipse all code formatting properties are 1) in the project properties and 2) in the Eclipse properties. The project properties inherit from the Eclipse properties.
So if you open the project properties, type "format" in the search field. It will show you a "Formatter" menu item, that may depend on the current language (at least in Java it is called "Formatter"). Then, in this example, allow the project-specific settings, and then click edit. You will see a flood of possible details you can decide.
See here:
Then, in the tab "New Lines", uncheck the checkbox "Put empty statement on new line", in the section "Empty statements".
Often you have to try and search a bit because there are really many options. The part at right shows you a preview of the code formatting.
I'm very happy with the way eclipse autocompletes for me, but I was wondering if it could do something more...
I often have very similarly named variables, such as myPlayerManagerPane and myCharacterManagerPane, I was wondering if there was a way that would allow me to get half way into the name, type a character or two and then autocomplete. This would let me copy and past lines of code for both, then surgically edit the variable names. It's gotten to the point where I'm trying to do this (I'm autocompleting on autopilot) and getting fun variables such as myCharacterManagerPaneManagerPane as I autocomplete a whole name, halfway through another.
Is there a way around this?
In Window > Preferences > Java > Editor > Content Assist, select "Completion overwrites", instead of "Completion inserts". This would overwrite the entire variable with the new one.
Alternatively, you can press Ctrl to toggle this behaviour when the content assist window pops up.
Your question (or rather, its prelude) can easily be confused with another one; namely,
Say I have two variables variableLabel and variableConfiguration, how can I have Eclipse complete the common prefix of the two variables, i.e. variable, before writing either L or C and having Eclipse "AutoComplete" complete the rest?
This is the question which lead me to this thread, so I feel I must answer it:
In Window > Preferences > Java > Editor > Content Assist, check "Insert common prefixes automatically". Pressing Ctrl+Space now results in the desired functionality.
Relevant StackOverflow question
/*
*
* This is a long comment. I broke it into lines, but that made it impossible to edit without screwing up the formatting. Is there a way to make Netbeans add line breaks automatically?
*
*/
Reads: This is a long comment. I broke it into lines, but that made it impossible to edit without screwing up the formatting. Is there a way to make Netbeans add line breaks automatically?
As for today, the current NetBeans (7.3) word-wraps comments with some nice available extra options when formatting. NB: Unfortunately, this is currently only available for the Java language.
You can launch the formatter with the context menu→Format, or if you did not change the standard shortcuts, Alt+Shift+F should do.
To access the corresponding configuration: Tools → Options → Editor → Formatting; Language: Java; Category: Comments
Your IDE won't format the comment for you. You will have to do it by hand. Yes, that means you have to re-format it once you add new words to it.
If you press Enter to insert a new line, NetBeans will simply extend the docblock formatting - it won't break anything. There's also a useful option in the Preferences to display a line in the right margin, so you know when to break a line. It's in:
Tools > Options > Editor > Formatting > Right Margin
Is this what you're looking for?
Go to tools->options->editor->formatting
find line wrap and choose one the wrapping style you desire,there are two options : afterword and anywhere.
and then click OK! :D
nb : I suggest you to choose afterword
The question has two parts, one of which I already have the answer for.
How to auto-remove trailing whitespace from the entire file being edited? -> Answer: use the AnyEdit plugin, which can be set to do that on any save to the file.
How to auto-remove trailing whitespace only from the lines I changed? -> This I don't know and would appreciate any help.
I assume your questions is with regards to Java code. If that's the case, you don't actually need any extra plugins to accomplish 1). You can just go to Preferences -> Java -> Editor -> Save Actions and configure it to remove trailing whitespace.
By the sounds of it you also want to make this a team-wide setting, right? To make life easier and avoid having to remember setting it up every time you have a new workspace you can set the save action as a project specific preference that gets stored into your SCM along with the code.
In order to do that right-click on your project and go to Properties -> Java Editor -> Save Actions. From there you can enable project specific settings and configure it to remove trailing whitespace (among other useful things).
NB: This option has been removed in Eclipse Kepler (4.3) and following releases.
NB #2: The option seems to be back in Eclipse Luna - Luna Service Release 1a (4.4.1)
Removing whitespace from the entire file being edited:
Preferences -> Java -> Editors -> Save Actions -> check Perform the selected actions on save -> check Additional actions -> click Configure.. -> go to Code organizing tab -> check Remove trailing whitespace -> select All lines.
Removing whitespace only from the lines I changed:
Preferences -> Java -> Editor -> Save Actions -> check "Perform the selected actions on save -> check Format source code -> select Format edited lines.
Note it is not necessary to click Configure the formatter settings on the Formatter page - all the code styles automatically include removing trailing whitespace. At least I couldn't find a setting for this in Formatter configuration, and it worked out of the box for built-in Java Conventions, Eclipse, Eclipse 2.1 styles, as well as GoogleStyle.
When using this set-up, you obviously need to also turn off the solution to part 1 of the question.
Eclipse version checked: 4.5.2, 4.11
You don't need any plugin to do so. For instance, if you code JAVA, you can erase trailing whitespaces configuring save actions:
Eclipse 3.6
Preferences -> Java -> Editors -> Save Actions -> Check Perform the selected actions on save -> Check Additional actions -> Click the Configure.. button.
In the Code organizing tab, check Remove trailing whitespace
PyDev can do it by either Ctrl+Shift+F if you have code formatter option set to do it, or by during saving:
Eclipse -> Window -> Preferences -> PyDev -> Editor -> Code Style -> Code Formatter:
I use at least these:
Auto format before saving
Right trim lines?
Add new line at end of file
Do following:
Preferences -> Java -> Editor -> Save Actions
You can map a key in Eclipse to manually remove trailing whitespaces in the whole file, but only on request instead of automatically at save. (Preference/Keys and then map a set of keys to File/Remove Trailing Whitespace) This can be useful if you want to sanitize all new files, but keep legacy code untouched.
Another strategy is to activate visual display of whitespace, so at least you'll know when you're adding some trailing whitespace. As far as I know, there's no way to display only trailing whitespace though, but I'll be glad to be proved wrong.
In a pinch, for those editors that don't support removal of trailing whitespace at all (e.g. the XML editor), you can remove it from all lines by doing a find and replace, enabling regular expressions, then finding "[\t ]+$" and replacing it with "" (blank). There's probably a better regex to do that but it works for me without needing to install AnyEdit.
I would say AnyEdit too. It does not provide this specific functionalities. However, if you and your team use the AnyEdit features at each save actions, then when you open a file, it must not have any trailing whitespace.
So, if you modify this file, and if you add new trailing spaces, then during the save operation, AnyEdit will remove only these new spaces, as they are the only trailing spaces in this file.
If, for some reasons, you need to keep the trailing spaces on the lines that were not modified by you, then I have no answer for you, and I am not sure this kind of feature exists in any Eclipse plugin...
It is impossible to do it in Eclipse in generic way right now, but it can be changed given with basic Java knowledge and some free time to add basic support for this https://bugs.eclipse.org/bugs/show_bug.cgi?id=180349
The dependent issue: https://bugs.eclipse.org/bugs/show_bug.cgi?id=311173
For php there is also an option:
There is a really easy way to do this with sed, the Unix command line tool. You could probably create a macro in Eclipse to run this:
sed -i 's/[[:space:]]*$//' <filename>
As #Malvineous said, It's not professional but a work-around to use the Find/Replace method to remove trailing space (below including tab U+0009 and whitespace U+0020).
Just press Ctrl + F (or command + F)
Find [\t ][\t ]*$
Replace with blank string
Use Regular expressions
Replace All
extra:
For removing leading space, find ^[\t ][\t ]* instead of [\t ][\t ]*$
For removing blank lines, find ^\s*$\r?\n
I am not aware of any solution for the second part of your question. The reason is that it is not clear how to define I changed. Changed when? Just between 2 saves or between commits... Basically - forget it.
I assume you would like to stick to some guideline, but do not touch the rest of the code. But the guideline should be used overall, and not for bites and pieces. So my suggestion is - change all the code to the guideline: it is once-off operation, but make sure that all your developers have the same plugin (AnyEdit) with the same settings for the project.
I used this command for git: git config --global core.whitespace cr-at-eol
It removes ^M characters that are trailing.