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Replaced Java 11 Files.readString with an equivalent FilesUtil.readString
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37 changes: 37 additions & 0 deletions
37
cli/src/main/java/io/github/nubesgen/cli/util/FilesUtil.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| package io.github.nubesgen.cli.util; | ||
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| import static java.nio.charset.StandardCharsets.UTF_8; | ||
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| import java.io.BufferedReader; | ||
| import java.io.IOException; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
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| /** | ||
| * Java 8 compatible Files helpers. | ||
| */ | ||
| public class FilesUtil { | ||
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| /** | ||
| * Reads all content from a file into a string, decoding from bytes to characters using the UTF-8 charset. | ||
| * The method ensures that the file is closed when all content have been read or an I/O error, or other | ||
| * runtime exception, is thrown. | ||
| * | ||
| * Reproduces the behavior of Java 11 Paths.readString(Path). | ||
| * | ||
| * @param path the path to the file | ||
| * @return a String containing the content read from the file | ||
| * @throws IOException if an I/O error occurs reading from the file or a malformed or unmappable byte sequence is read | ||
| */ | ||
| public static String readString(final Path path) throws IOException { | ||
| final StringBuilder resultStringBuilder = new StringBuilder(); | ||
| try (final BufferedReader reader = Files.newBufferedReader(path, UTF_8)) { | ||
| String line; | ||
| while ((line = reader.readLine()) != null) { | ||
| resultStringBuilder.append(line).append("\n"); | ||
| } | ||
| } | ||
| return resultStringBuilder.toString(); | ||
| } | ||
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| } |
28 changes: 28 additions & 0 deletions
28
cli/src/test/java/io/github/nubesgen/cli/util/FilesUtilTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| package io.github.nubesgen.cli.util; | ||
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| import static org.assertj.core.api.Assertions.assertThat; | ||
| import static org.assertj.core.api.Assertions.assertThatThrownBy; | ||
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| import java.io.IOException; | ||
| import java.net.URISyntaxException; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.Paths; | ||
| import java.nio.file.NoSuchFileException; | ||
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| import org.junit.jupiter.api.Test; | ||
| class FilesUtilTest { | ||
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| @Test | ||
| public void readStringOk() throws URISyntaxException, IOException { | ||
| final Path path = Paths.get(getClass().getResource("/util/content.txt").toURI()); | ||
| final String content = FilesUtil.readString(path); | ||
| assertThat(content).isEqualTo("Nubes\nGen\n"); | ||
| } | ||
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| @Test | ||
| public void readStringNonExistentThrowsFileNotFoundException() throws URISyntaxException, IOException { | ||
| final Path path = Paths.get("nonexistent"); | ||
| assertThatThrownBy(() -> FilesUtil.readString(path)).isInstanceOf(NoSuchFileException.class); | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| Nubes | ||
| Gen |