implement parsing human-readable names from URLs

Based off of commit 257b768436a0e8ab7887f9b790c5b92a7fe51ef5

Upstream-PR: https://github.com/NixOS/nix/pull/8678
Co-authored-by: Felix Uhl <felix.uhl@outlook.com>
Change-Id: Idcb7f6191ca3310ef9dc854197f7798260c3f71d

2 files changed, 68 insertions, 0 deletions

diff --git a/tests/unit/libutil/url-name.cc b/tests/unit/libutil/url-name.cc
new file mode 100644
index 000000000..f637efa89
--- /dev/null
+++ b/tests/unit/libutil/url-name.cc
@@ -0,0 +1,67 @@
+#include "url-name.hh"
+#include <gtest/gtest.h>
+
+namespace nix {
+
+/* ----------- tests for url-name.hh --------------------------------------------------*/
+
+    TEST(getNameFromURL, getsNameFromURL) {
+        ASSERT_EQ(getNameFromURL(parseURL("path:/home/user/project")), "project");
+        ASSERT_EQ(getNameFromURL(parseURL("path:~/repos/nixpkgs#packages.x86_64-linux.hello")), "hello");
+        ASSERT_EQ(getNameFromURL(parseURL("path:.#nonStandardAttr.mylaptop")), "nonStandardAttr.mylaptop");
+        ASSERT_EQ(getNameFromURL(parseURL("path:./repos/myflake#nonStandardAttr.mylaptop")), "nonStandardAttr.mylaptop");
+        ASSERT_EQ(getNameFromURL(parseURL("path:./nixpkgs#packages.x86_64-linux.complex^bin,man")), "complex");
+        ASSERT_EQ(getNameFromURL(parseURL("path:./myproj#packages.x86_64-linux.default^*")), "myproj");
+
+        ASSERT_EQ(getNameFromURL(parseURL("github:NixOS/nixpkgs#packages.x86_64-linux.hello")), "hello");
+        ASSERT_EQ(getNameFromURL(parseURL("github:NixOS/nixpkgs#hello")), "hello");
+        ASSERT_EQ(getNameFromURL(parseURL("github:NixOS/nix#packages.x86_64-linux.default")), "nix");
+        ASSERT_EQ(getNameFromURL(parseURL("github:NixOS/nix#")), "nix");
+        ASSERT_EQ(getNameFromURL(parseURL("github:NixOS/nix")), "nix");
+        ASSERT_EQ(getNameFromURL(parseURL("github:cachix/devenv/main#packages.x86_64-linux.default")), "devenv");
+        ASSERT_EQ(getNameFromURL(parseURL("github:edolstra/nix-warez?rev=1234&dir=blender&ref=master")), "blender");
+
+        ASSERT_EQ(getNameFromURL(parseURL("gitlab:NixOS/nixpkgs#packages.x86_64-linux.hello")), "hello");
+        ASSERT_EQ(getNameFromURL(parseURL("gitlab:NixOS/nixpkgs#hello")), "hello");
+        ASSERT_EQ(getNameFromURL(parseURL("gitlab:NixOS/nix#packages.x86_64-linux.default")), "nix");
+        ASSERT_EQ(getNameFromURL(parseURL("gitlab:NixOS/nix#")), "nix");
+        ASSERT_EQ(getNameFromURL(parseURL("gitlab:NixOS/nix")), "nix");
+        ASSERT_EQ(getNameFromURL(parseURL("gitlab:cachix/devenv/main#packages.x86_64-linux.default")), "devenv");
+
+        ASSERT_EQ(getNameFromURL(parseURL("sourcehut:NixOS/nixpkgs#packages.x86_64-linux.hello")), "hello");
+        ASSERT_EQ(getNameFromURL(parseURL("sourcehut:NixOS/nixpkgs#hello")), "hello");
+        ASSERT_EQ(getNameFromURL(parseURL("sourcehut:NixOS/nix#packages.x86_64-linux.default")), "nix");
+        ASSERT_EQ(getNameFromURL(parseURL("sourcehut:NixOS/nix#")), "nix");
+        ASSERT_EQ(getNameFromURL(parseURL("sourcehut:NixOS/nix")), "nix");
+        ASSERT_EQ(getNameFromURL(parseURL("sourcehut:cachix/devenv/main#packages.x86_64-linux.default")), "devenv");
+
+        ASSERT_EQ(getNameFromURL(parseURL("git://github.com/edolstra/dwarffs")), "dwarffs");
+        ASSERT_EQ(getNameFromURL(parseURL("git://github.com/edolstra/nix-warez?dir=blender")), "blender");
+        ASSERT_EQ(getNameFromURL(parseURL("git+file:///home/user/project")), "project");
+        ASSERT_EQ(getNameFromURL(parseURL("git+file:///home/user/project?ref=fa1e2d23a22")), "project");
+        ASSERT_EQ(getNameFromURL(parseURL("git+ssh://git@github.com/someuser/my-repo#")), "my-repo");
+        ASSERT_EQ(getNameFromURL(parseURL("git+git://github.com/someuser/my-repo?rev=v1.2.3")), "my-repo");
+        ASSERT_EQ(getNameFromURL(parseURL("git+ssh:///home/user/project?dir=subproject&rev=v2.4")), "subproject");
+        ASSERT_EQ(getNameFromURL(parseURL("git+http://not-even-real#packages.x86_64-linux.hello")), "hello");
+        ASSERT_EQ(getNameFromURL(parseURL("git+https://not-even-real#packages.aarch64-darwin.hello")), "hello");
+
+        ASSERT_EQ(getNameFromURL(parseURL("tarball+http://github.com/NixOS/nix/archive/refs/tags/2.18.1#packages.x86_64-linux.jq")), "jq");
+        ASSERT_EQ(getNameFromURL(parseURL("tarball+https://github.com/NixOS/nix/archive/refs/tags/2.18.1#packages.x86_64-linux.hg")), "hg");
+        ASSERT_EQ(getNameFromURL(parseURL("tarball+file:///home/user/Downloads/nixpkgs-2.18.1#packages.aarch64-darwin.ripgrep")), "ripgrep");
+
+        ASSERT_EQ(getNameFromURL(parseURL("https://github.com/NixOS/nix/archive/refs/tags/2.18.1.tar.gz#packages.x86_64-linux.pv")), "pv");
+        ASSERT_EQ(getNameFromURL(parseURL("http://github.com/NixOS/nix/archive/refs/tags/2.18.1.tar.gz#packages.x86_64-linux.pv")), "pv");
+
+        ASSERT_EQ(getNameFromURL(parseURL("file:///home/user/project?ref=fa1e2d23a22")), "project");
+        ASSERT_EQ(getNameFromURL(parseURL("file+file:///home/user/project?ref=fa1e2d23a22")), "project");
+        ASSERT_EQ(getNameFromURL(parseURL("file+http://not-even-real#packages.x86_64-linux.hello")), "hello");
+        ASSERT_EQ(getNameFromURL(parseURL("file+http://gitfantasy.com/org/user/notaflake")), "notaflake");
+        ASSERT_EQ(getNameFromURL(parseURL("file+https://not-even-real#packages.aarch64-darwin.hello")), "hello");
+
+        ASSERT_EQ(getNameFromURL(parseURL("https://www.github.com/")), std::nullopt);
+        ASSERT_EQ(getNameFromURL(parseURL("path:.")), std::nullopt);
+        ASSERT_EQ(getNameFromURL(parseURL("file:.#")), std::nullopt);
+        ASSERT_EQ(getNameFromURL(parseURL("path:.#packages.x86_64-linux.default")), std::nullopt);
+        ASSERT_EQ(getNameFromURL(parseURL("path:.#packages.x86_64-linux.default^*")), std::nullopt);
+    }
+}
diff --git a/tests/unit/meson.build b/tests/unit/meson.build
index ae850df47..339ac9a4a 100644
--- a/tests/unit/meson.build
+++ b/tests/unit/meson.build
@@ -52,6 +52,7 @@ libutil_tests_sources = files(
   'libutil/suggestions.cc',
   'libutil/tests.cc',
   'libutil/url.cc',
+  'libutil/url-name.cc',
   'libutil/xml-writer.cc',
 )