Brandon Lucas
cbb66fbb73
Sync local packages into the registry repo and update index.json and README.md to include all 9 packages.
94 lines
3.0 KiB
Plaintext
94 lines
3.0 KiB
Plaintext
// path - File path utilities for Lux
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// Get the last component of a path (filename)
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// basename("/foo/bar/baz.txt") => "baz.txt"
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// basename("file.txt") => "file.txt"
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pub fn basename(path: String): String =
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match String.lastIndexOf(path, "/") {
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Some(idx) => String.substring(path, idx + 1, String.length(path)),
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None => path,
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}
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// Get the directory portion of a path
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// dirname("/foo/bar/baz.txt") => "/foo/bar"
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// dirname("file.txt") => "."
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pub fn dirname(path: String): String =
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match String.lastIndexOf(path, "/") {
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Some(idx) => if idx == 0 then "/" else String.substring(path, 0, idx),
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None => ".",
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}
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// Get the file extension (without the dot)
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// extension("file.txt") => Some("txt")
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// extension("file") => None
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// extension("file.tar.gz") => Some("gz")
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pub fn extension(path: String): Option<String> = {
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let name = basename(path)
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match String.lastIndexOf(name, ".") {
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Some(idx) => if idx == 0 then None
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else Some(String.substring(name, idx + 1, String.length(name))),
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None => None,
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}
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}
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// Remove the file extension
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// stripExtension("file.txt") => "file"
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// stripExtension("file") => "file"
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// stripExtension("/foo/bar.txt") => "/foo/bar"
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pub fn stripExtension(path: String): String =
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match String.lastIndexOf(path, ".") {
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Some(dotIdx) => match String.lastIndexOf(path, "/") {
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Some(slashIdx) => if dotIdx > slashIdx then String.substring(path, 0, dotIdx) else path,
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None => String.substring(path, 0, dotIdx),
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},
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None => path,
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}
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// Join two path components with a separator
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// join("/foo", "bar") => "/foo/bar"
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// join("/foo/", "bar") => "/foo/bar"
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// join("", "bar") => "bar"
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pub fn join(a: String, b: String): String =
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if a == "" then b
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else if b == "" then a
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else if String.endsWith(a, "/") then
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if String.startsWith(b, "/") then a + String.substring(b, 1, String.length(b))
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else a + b
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else if String.startsWith(b, "/") then a + b
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else a + "/" + b
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// Check if a path has a given extension
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// hasExtension("file.txt", "txt") => true
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// hasExtension("file.md", "txt") => false
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pub fn hasExtension(path: String, ext: String): Bool =
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String.endsWith(path, "." + ext)
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// Replace the file extension
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// replaceExtension("file.txt", "md") => "file.md"
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// replaceExtension("file", "md") => "file.md"
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pub fn replaceExtension(path: String, newExt: String): String =
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stripExtension(path) + "." + newExt
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// Get the filename without extension (stem)
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// stem("file.txt") => "file"
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// stem("/foo/bar.txt") => "bar"
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// stem("file") => "file"
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pub fn stem(path: String): String = {
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let name = basename(path)
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match String.lastIndexOf(name, ".") {
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Some(idx) => if idx == 0 then name
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else String.substring(name, 0, idx),
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None => name,
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}
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}
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// Check if a path is absolute (starts with /)
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pub fn isAbsolute(path: String): Bool =
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String.startsWith(path, "/")
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// Check if a path is relative (does not start with /)
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pub fn isRelative(path: String): Bool =
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if path == "" then true
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else if String.startsWith(path, "/") then false
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else true
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