/
Formatter.java
97 lines (84 loc) · 3.08 KB
/
Formatter.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
/*
* Copyright 2016 DiffPlug
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.diffplug.gradle.spotless;
import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
import java.util.ArrayList;
import java.util.List;
import org.gradle.api.logging.Logger;
import org.gradle.api.logging.Logging;
/** Formatter which performs the full formatting. */
public class Formatter {
private final LineEnding lineEnding;
private final Path projectDirectory;
private final List<FormatterStep> steps;
private final Logger logger = Logging.getLogger(Formatter.class);
public Formatter(LineEnding lineEnding, Path projectDirectory, List<FormatterStep> steps) {
this.lineEnding = lineEnding;
this.projectDirectory = projectDirectory;
this.steps = new ArrayList<>(steps);
}
/** Returns true iff the given file's formatting is up-to-date. */
public boolean isClean(File file) throws IOException {
String raw = new String(Files.readAllBytes(file.toPath()), StandardCharsets.UTF_8);
String unix = raw.replaceAll("\r", "");
// check the newlines
int totalNewLines = (int) unix.codePoints().filter(val -> val == '\n').count();
int windowsNewLines = raw.length() - unix.length();
if (lineEnding.isWin()) {
if (windowsNewLines != totalNewLines) {
return false;
}
} else {
if (windowsNewLines != 0) {
return false;
}
}
// check the other formats
String formatted = applyAll(unix, file);
// return true iff the formatted string equals the unix one
return formatted.equals(unix);
}
/** Applies formatting to the given file. */
public void applyFormat(File file) throws IOException {
String raw = new String(Files.readAllBytes(file.toPath()), StandardCharsets.UTF_8);
String unix = raw.replaceAll("\r", "");
// enforce the format
unix = applyAll(unix, file);
// convert the line endings if necessary
if (!lineEnding.string.equals("\n")) {
unix = unix.replace("\n", lineEnding.string);
}
// write out the file
Files.write(file.toPath(), unix.getBytes(StandardCharsets.UTF_8), StandardOpenOption.TRUNCATE_EXISTING);
}
/** Returns the result of calling all of the FormatterSteps. */
String applyAll(String unix, File file) {
for (FormatterStep step : steps) {
try {
unix = step.format(unix, file);
} catch (Throwable e) {
logger.warn("Unable to apply step " + step.getName() + " to " + projectDirectory.relativize(file.toPath()) + ": " + e.getMessage());
logger.info("Exception is ", e);
}
}
return unix;
}
}