Merge pull request #28 from dojyorin/dev

add mainpath.

README.md

@@ -86,11 +86,12 @@ const formatted = trimExtend(decoded); // formatted string.
 **Platform Specific**
 
 ```ts
-const posix = posixSep("C:\\Users"); // POSIX style (slash) path string.
-const win = isWin(); // "true" if running on Windows.
+const posix = posixSep("C:\\Users\\Administrator"); // POSIX style (slash) path string.
+const win = winSep("C:/Users/Administrator"); // Windows style (backslash) path string.
+const iswin = isWin(); // "true" if running on Windows.
 const tmp = tmpPath(); // `/tmp` if running on Linux or Mac, `C:/Windows/Temp` if running on Windows.
 const home = homePath(); // `$HOME` if running on Linux or Mac, `%USERPROFILE%` if running on Windows.
-cwdMain(); // Move current directory to `Deno.mainModule`.
+const main = mainPath(); // Returns the directory of `Deno.mainModule`.
 ```
 
 </p>

deps.test.ts

@@ -1,3 +1,3 @@
-export {assertEquals} from "https://deno.land/std@0.166.0/testing/asserts.ts";
-export {dirname, fromFileUrl} from "https://deno.land/std@0.166.0/path/mod.ts";
-export {serve} from "https://deno.land/std@0.166.0/http/mod.ts";
+export {assertEquals} from "https://deno.land/std@0.167.0/testing/asserts.ts";
+export {dirname, fromFileUrl} from "https://deno.land/std@0.167.0/path/mod.ts";
+export {serve} from "https://deno.land/std@0.167.0/http/mod.ts";

src/platform.ts

@@ -9,6 +9,15 @@ export function posixSep(path:string){
     return path.replaceAll("\\", "/");
 }
 
+/**
+* Convert from slash to backslash.
+* @param path POSIX style (slash) path string.
+* @return Windows style (backslash) path string.
+*/
+export function winSep(path:string){
+    return path.replaceAll("/", "\\");
+}
+
 /**
 * Check if it's running on Windows.
 * @return `true` if running on Windows.
@@ -46,8 +55,15 @@ export function homePath(){
 }
 
 /**
-* Move current directory to `Deno.mainModule`.
+* Returns the directory of `Deno.mainModule`.
 */
-export function cwdMain(){
-    Deno.chdir(fromFileUrl(dirname(Deno.mainModule)));
+export function mainPath(){
+    const path = fromFileUrl(dirname(Deno.mainModule));
+
+    switch(Deno.build.os){
+        case "linux": return path;
+        case "darwin": return path;
+        case "windows": return posixSep(path);
+        default: throw new Error();
+    }
 }

test/platform.test.ts

@@ -1,5 +1,16 @@
 import {assertEquals, dirname, fromFileUrl} from "../deps.test.ts";
-import {posixSep, isWin, tmpPath, homePath, cwdMain} from "../src/platform.ts";
+import {posixSep, winSep, isWin, tmpPath, homePath, mainPath} from "../src/platform.ts";
+
+Deno.test({
+    name: "Platform: Separator.",
+    async fn(){
+        const samplePosix = "C:/Windows/System32/cmd.exe";
+        const sampleWin = "C:\\Windows\\System32\\cmd.exe";
+
+        assertEquals(posixSep(sampleWin), samplePosix);
+        assertEquals(winSep(samplePosix), sampleWin);
+    }
+});
 
 Deno.test({
     ignore: Deno.build.os !== "windows",
@@ -8,6 +19,7 @@ Deno.test({
         assertEquals(isWin(), true);
         assertEquals(tmpPath(), "C:/Windows/Temp");
         assertEquals(homePath(), posixSep(Deno.env.toObject().USERPROFILE));
+        assertEquals(mainPath(), posixSep(fromFileUrl(dirname(Deno.mainModule))));
     }
 });
 
@@ -18,18 +30,6 @@ Deno.test({
         assertEquals(isWin(), false);
         assertEquals(tmpPath(), "/tmp");
         assertEquals(homePath(), Deno.env.toObject().HOME);
-    }
-});
-
-Deno.test({
-    name: "Platform: CWD.",
-    async fn(){
-        const backup = Deno.cwd();
-
-        cwdMain();
-
-        assertEquals(fromFileUrl(dirname(Deno.mainModule)), Deno.cwd());
-
-        Deno.chdir(backup);
+        assertEquals(mainPath(), fromFileUrl(dirname(Deno.mainModule)));
     }
 });