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Adapts to @andrewrk​s comment to include dot.

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This commit is contained in:
Felix (xq) Queißner 2020-11-14 11:01:02 +01:00
parent 2ced0316eb
commit 0bbf170514
1 changed files with 13 additions and 13 deletions
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26
lib/std/fs/path.zig
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@ -1187,18 +1187,18 @@ fn testRelativeWindows(from: []const u8, to: []const u8, expected_output: []cons
/// This function will search for the file extension (separated by a `.`) and will return the text after the `.`.
/// Files that end with `.` are considered to have no extension, files that start with `.`
/// Examples:
/// - `"main.zig"` ⇒ `"zig"`
/// - `"src/main.zig"` ⇒ `"zig"`
/// - `"main.zig"` ⇒ `".zig"`
/// - `"src/main.zig"` ⇒ `".zig"`
/// - `".gitignore"` ⇒ `null`
/// - `"keep."` ⇒ `null`
/// - `"src.keep.me"` ⇒ `"me"`
/// - `"src.keep.me"` ⇒ `".me"`
pub fn extension(path: []const u8) ?[]const u8 {
const filename = basename(path);
return if (std.mem.lastIndexOf(u8, filename, ".")) |index|
if (index == 0 or index == filename.len - 1)
null
else
filename[index + 1 ..]
filename[index..]
else
null;
}
@ -1222,9 +1222,9 @@ test "extension" {
testExtension(".a", null);
testExtension(".file", null);
testExtension(".gitignore", null);
testExtension("file.ext", "ext");
testExtension("very-long-file.bruh", "bruh");
testExtension("a.b.c", "c");
testExtension("file.ext", ".ext");
testExtension("very-long-file.bruh", ".bruh");
testExtension("a.b.c", ".c");
testExtension("/", null);
testExtension("/.", null);
@ -1233,9 +1233,9 @@ test "extension" {
testExtension("/.a", null);
testExtension("/.file", null);
testExtension("/.gitignore", null);
testExtension("/file.ext", "ext");
testExtension("/very-long-file.bruh", "bruh");
testExtension("/a.b.c", "c");
testExtension("/file.ext", ".ext");
testExtension("/very-long-file.bruh", ".bruh");
testExtension("/a.b.c", ".c");
testExtension("/foo/bar/bam/", null);
testExtension("/foo/bar/bam/.", null);
@ -1244,7 +1244,7 @@ test "extension" {
testExtension("/foo/bar/bam/.a", null);
testExtension("/foo/bar/bam/.file", null);
testExtension("/foo/bar/bam/.gitignore", null);
testExtension("/foo/bar/bam/file.ext", "ext");
testExtension("/foo/bar/bam/very-long-file.bruh", "bruh");
testExtension("/foo/bar/bam/a.b.c", "c");
testExtension("/foo/bar/bam/file.ext", ".ext");
testExtension("/foo/bar/bam/very-long-file.bruh", ".bruh");
testExtension("/foo/bar/bam/a.b.c", ".c");
}