dorkbox/Utilities
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Added ability for FileUtil.read() to pass in a string builder, instead

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of dealing only with strings. Removed line.trim() and isEmpty() checks,
 since the objective of these methods are to convert a file to a string.
  Nothing else.
This commit is contained in:
nathan 2017-05-29 13:47:27 +02:00
parent 1c1b6b3dc0
commit b8e4f2353e
1 changed files with 39 additions and 19 deletions
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58
src/dorkbox/util/FileUtil.java
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@ -86,19 +86,7 @@ class FileUtil {
public static byte[] ZIP_HEADER = {'P', 'K', (byte) 0x3, (byte) 0x4};
/**
* Converts the content of a file into a list of strings.
*
* @param file the input file to read. Throws an error if this file cannot be read.
*
* @return A list of strings, one line per string, of the content
*/
public static
List<String> read(final File file) throws IOException {
return read(file, false);
}
/**
* Converts the content of a file into a list of strings.
* Converts the content of a file into a list of strings. Lines are trimmed.
*
* @param file the input file to read. Throws an error if this file cannot be read.
* @param includeEmptyLines true if you want the resulting list of String to include blank/empty lines from the file
@ -108,10 +96,6 @@ class FileUtil {
public static
List<String> read(final File file, final boolean includeEmptyLines) throws IOException {
List<String> lines = new ArrayList<String>();
if (!file.canRead()) {
return lines;
}
FileReader fileReader = new FileReader(file);
try {
BufferedReader bin = new BufferedReader(fileReader);
@ -122,7 +106,7 @@ class FileUtil {
lines.add(line);
}
} else {
while (( line = bin.readLine()) != null) {
while ((line = bin.readLine()) != null) {
if (!line.isEmpty()) {
lines.add(line);
}
@ -134,6 +118,42 @@ class FileUtil {
return lines;
}
/**
* Convenience method that converts the content of a file into a giant string.
*
* @param file the input file to read. Throws an error if this file cannot be read.
*
* @return A string, matching the contents of the file
*/
public static
String readAsString(final File file) throws IOException {
StringBuilder stringBuilder = new StringBuilder((int) (file.length()));
read(file, stringBuilder);
return stringBuilder.toString();
}
/**
* Writes the content of a file to the passed in StringBuilder.
*
* @param file the input file to read. Throws an error if this file cannot be read.
* @param stringBuilder the stringBuilder this file will be written to
*/
public static
void read(final File file, final StringBuilder stringBuilder) throws IOException {
FileReader fileReader = new FileReader(file);
try {
BufferedReader bin = new BufferedReader(fileReader);
String line;
while (( line = bin.readLine()) != null) {
stringBuilder.append(line).append(OS.LINE_SEPARATOR);
}
} finally {
IO.closeQuietly(fileReader);
}
}
/**
* Reads the contents of the supplied input stream into a list of lines.
* Closes the reader on successful or failed completion.
@ -1329,7 +1349,7 @@ class FileUtil {
* </pre>
* (Note the file separator returned will be correct for Windows/Unix)
*
* @param file the file to normalize, null returns null
* @param filename the file to normalize, null returns null
* @return the normalized file, or null if invalid
*/
public static