MDS/openide
1
0
Fork 0
mirror of https://gitflic.ru/project/openide/openide.git synced 2026-09-27 10:03:11 +07:00
Code Issues Packages Projects Releases Wiki Activity

LoadTextUtil: added methods that detect and convert line separators

Browse Source
This commit is contained in:
unknown
2009-10-16 23:09:01 +04:00
parent f82dbc550f
commit e626a5d479
1 changed files with 58 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/LoadTextUtil.java
+58
View File
@@ -278,6 +278,64 @@ public final class LoadTextUtil {
return result.getFirst();
}
/**
* Get detected line separator, if the file never been loaded, is loaded if checkFile parameter is specified.
*
* @param file the file to check
* @param checkFile if the line separator was not detected before, try to detect it
* @return the detected line separator or null
*/
@Nullable
public static String detectLineSeparator(@NotNull VirtualFile file, boolean checkFile) {
String lineSeparator = file.getUserData(DETECTED_LINE_SEPARATOR_KEY);
if (lineSeparator == null && checkFile) {
try {
getTextByBinaryPresentation(file.contentsToByteArray(), file);
lineSeparator = file.getUserData(DETECTED_LINE_SEPARATOR_KEY);
}
catch (IOException e) {
// null will be returned
}
}
return lineSeparator;
}
/**
* Change line separator for the file to the specified value (assumes that the documents were saved)
*
* @param project the project instance
* @param requestor the requestor for the operation
* @param file the file to convert
* @param newLineSeparator the new line separator for the file
* @throws IOException in the case of IO problem
*/
public static void changeLineSeparator(@Nullable Project project,
@Nullable Object requestor,
@NotNull VirtualFile file,
@NotNull String newLineSeparator) throws IOException {
String lineSeparator = file.getUserData(DETECTED_LINE_SEPARATOR_KEY);
if (lineSeparator != null && lineSeparator.equals(newLineSeparator)) {
return;
}
CharSequence cs = getTextByBinaryPresentation(file.contentsToByteArray(), file);
lineSeparator = file.getUserData(DETECTED_LINE_SEPARATOR_KEY);
if (lineSeparator.equals(newLineSeparator)) {
return;
}
if (!newLineSeparator.equals("\n")) {
cs = StringUtil.convertLineSeparators(cs.toString(), newLineSeparator);
}
String text = cs.toString();
file.putUserData(DETECTED_LINE_SEPARATOR_KEY, newLineSeparator);
Writer w = getWriter(project, file, requestor, text, System.currentTimeMillis());
try {
w.write(text);
}
finally {
w.close();
}
}
@NotNull
public static CharSequence getTextByBinaryPresentation(@NotNull byte[] bytes, Charset charset) {
final int offset = getBOM(bytes, charset).length;