Update upstream source from tag 'upstream/1.52.1+dfsg1'

[rustc.git] / vendor / compiletest_rs / src / util.rs

diff --git a/vendor/compiletest_rs/src/util.rs b/vendor/compiletest_rs/src/util.rs
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+++ b/vendor/compiletest_rs/src/util.rs
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+// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use std::env;
+use common::Config;
+use std::ffi::OsStr;
+use std::path::PathBuf;
+
+/// Conversion table from triple OS name to Rust SYSNAME
+const OS_TABLE: &'static [(&'static str, &'static str)] = &[
+    ("android", "android"),
+    ("bitrig", "bitrig"),
+    ("darwin", "macos"),
+    ("dragonfly", "dragonfly"),
+    ("freebsd", "freebsd"),
+    ("haiku", "haiku"),
+    ("ios", "ios"),
+    ("linux", "linux"),
+    ("mingw32", "windows"),
+    ("netbsd", "netbsd"),
+    ("openbsd", "openbsd"),
+    ("win32", "windows"),
+    ("windows", "windows"),
+    ("solaris", "solaris"),
+    ("emscripten", "emscripten"),
+];
+
+const ARCH_TABLE: &'static [(&'static str, &'static str)] = &[
+    ("aarch64", "aarch64"),
+    ("amd64", "x86_64"),
+    ("arm", "arm"),
+    ("arm64", "aarch64"),
+    ("hexagon", "hexagon"),
+    ("i386", "x86"),
+    ("i586", "x86"),
+    ("i686", "x86"),
+    ("mips", "mips"),
+    ("msp430", "msp430"),
+    ("nvptx64", "nvptx64"),
+    ("powerpc", "powerpc"),
+    ("powerpc64", "powerpc64"),
+    ("s390x", "s390x"),
+    ("sparc", "sparc"),
+    ("x86_64", "x86_64"),
+    ("xcore", "xcore"),
+    ("asmjs", "asmjs"),
+    ("wasm32", "wasm32"),
+];
+
+pub fn matches_os(triple: &str, name: &str) -> bool {
+    // For the wasm32 bare target we ignore anything also ignored on emscripten
+    // and then we also recognize `wasm32-bare` as the os for the target
+    if triple == "wasm32-unknown-unknown" {
+        return name == "emscripten" || name == "wasm32-bare"
+    }
+    for &(triple_os, os) in OS_TABLE {
+        if triple.contains(triple_os) {
+            return os == name;
+        }
+    }
+    panic!("Cannot determine OS from triple");
+}
+pub fn get_arch(triple: &str) -> &'static str {
+    for &(triple_arch, arch) in ARCH_TABLE {
+        if triple.contains(triple_arch) {
+            return arch;
+        }
+    }
+    panic!("Cannot determine Architecture from triple");
+}
+
+pub fn get_env(triple: &str) -> Option<&str> {
+    triple.split('-').nth(3)
+}
+
+pub fn get_pointer_width(triple: &str) -> &'static str {
+    if (triple.contains("64") && !triple.ends_with("gnux32")) || triple.starts_with("s390x") {
+        "64bit"
+    } else {
+        "32bit"
+    }
+}
+
+pub fn make_new_path(path: &str) -> String {
+    assert!(cfg!(windows));
+    // Windows just uses PATH as the library search path, so we have to
+    // maintain the current value while adding our own
+    match env::var(lib_path_env_var()) {
+        Ok(curr) => format!("{}{}{}", path, path_div(), curr),
+        Err(..) => path.to_owned(),
+    }
+}
+
+pub fn lib_path_env_var() -> &'static str {
+    "PATH"
+}
+fn path_div() -> &'static str {
+    ";"
+}
+
+pub fn logv(config: &Config, s: String) {
+    debug!("{}", s);
+    if config.verbose {
+        println!("{}", s);
+    }
+}
+
+pub trait PathBufExt {
+    /// Append an extension to the path, even if it already has one.
+    fn with_extra_extension<S: AsRef<OsStr>>(&self, extension: S) -> PathBuf;
+}
+
+impl PathBufExt for PathBuf {
+    fn with_extra_extension<S: AsRef<OsStr>>(&self, extension: S) -> PathBuf {
+        if extension.as_ref().is_empty() {
+            self.clone()
+        } else {
+            let mut fname = self.file_name().unwrap().to_os_string();
+            if !extension.as_ref().to_str().unwrap().starts_with('.') {
+                fname.push(".");
+            }
+            fname.push(extension);
+            self.with_file_name(fname)
+        }
+    }
+}