#430: Revert compareFiles

Author: DmitryNekrasov

core/tzdbOnFilesystem/src/internal/filesystem.kt

@@ -44,41 +44,3 @@ internal fun Path.tryTraverseDirectory(
     }
     return true
 }
-
-internal fun compareFiles(file1: String, file2: String): Boolean = memScoped {
-    try {
-        val stat1 = alloc<stat>()
-        val stat2 = alloc<stat>()
-
-        if (stat(file1, stat1.ptr) != 0 || stat(file2, stat2.ptr) != 0) return false
-        if (stat1.st_size != stat2.st_size) return false
-
-        val f1 = fopen(file1, "rb") ?: return false
-        val f2 = fopen(file2, "rb") ?: run { fclose(f1); return false }
-
-        try {
-            val bufferSize = 4096
-            val buffer1 = allocArray<ByteVar>(bufferSize)
-            val buffer2 = allocArray<ByteVar>(bufferSize)
-
-            while (true) {
-                val read1 = fread(buffer1, 1u, bufferSize.toUInt(), f1).toInt()
-                val read2 = fread(buffer2, 1u, bufferSize.toUInt(), f2).toInt()
-
-                if (read1 != read2) return false
-                if (read1 == 0) break  // EOF
-
-                for (i in 0..<read1.toInt()) {
-                    if (buffer1[i] != buffer2[i]) return false
-                }
-            }
-
-            return true
-        } finally {
-            fclose(f1)
-            fclose(f2)
-        }
-    } catch (_: Throwable) {
-        return false
-    }
-}