WIP on case-insensitive matching

This ended up being a lot of work and a bit confusing, so I'm not sure it's worth pursuing. But I
want to save this work in case I change my mind in the future.

Changes.md

@@ -7,6 +7,9 @@
   with a new `UbiBuilder::forge` method.
 - When looking for macOS assets, `ubi` will now match against `macosx` in asset names, not just
   `macos` and `osx`. Implemented by @kattouf (Vasiliy Kattouf). GH #80.
+- Matching an executable name in the downloaded release is now done case-insensitively. For example,
+  the project named `bscan/PerlNavigator` releases contain a file named `perlnavigator`. This is now
+  handled correctly without requiring you to pass `--exe perlnavigator`.
 
 ## 0.2.4 - 2024-11-24
 

README.md

@@ -88,10 +88,12 @@ Options:
       --self-upgrade         Use ubi to upgrade to the latest version of ubi. The --exe, --in,
                              --project, --tag, and --url args will be ignored.
   -i, --in <in>              The directory in which the binary should be placed. Defaults to ./bin.
-  -e, --exe <exe>            The name of this project's executable. By default this is the same as
-                             the project name, so for houseabsolute/precious we look for precious or
-                             precious.exe. When running on Windows the ".exe" suffix will be added
-                             as needed.
+  -e, --exe <exe>            The name of this project's executable. By default, this is the same as
+                             the project name, but case-insensitive. For example, with a project
+                             named `houseabsolute/precious` it looks for `precious`, `precious.exe`,
+                             `Precious`, `PRECIOUS.exe`, etc. When running on Windows the ".exe"
+                             suffix will be added as needed, so you should never include this in the
+                             value passed to `exe`.
   -m, --matching <matching>  A string that will be matched against the release filename when there
                              are multiple matching files for your OS/arch. For example, there may be
                              multiple releases for an OS/arch that differ by compiler (MSVC vs. gcc)
@@ -122,6 +124,25 @@ for anonymous API requests.
 However, you can also use the `--url` option to bypass the forge site API by providing the download
 link directly.
 
+## Installed Executable Naming
+
+If the release is in the form of a tarball or zip file, `ubi` will look in that archive file for a
+file that matches the value given for the `exe` field, if any. Otherwise it looks for a file with
+the same name as the project. In either case, does case-insensitive matching/
+
+The file it matches will be installed with whatever casing it has in the archive file. So if a
+project is named "SomeProject" and it releases a tarball that contains a "someproject" executable,
+`ubi` will find it and install it with that name.
+
+If the release is in the form of a bare executable or a compressed executable, then the installed
+executable will use the name of the project instead.
+
+This is a bit inconsistent, but it's how `ubi` has behaved since it was created, and I find this to
+be the sanest behavior. Some projects, for example `rust-analyzer`, provide releases as compressed
+executables with names like `rust-analyzer-x86_64-apple-darwin.gz` and
+`rust-analyzer-x86_64-unknown-linux-musl.gz`, so installing these as `rust-analyzer` seems like
+better behavior.
+
 ## Upgrading `ubi`
 
 You can run `ubi --self-upgrade` to upgrade `ubi` using `ubi`. Note that you must have write

ubi-cli/src/main.rs

@@ -99,10 +99,11 @@ fn cmd() -> Command {
                 .help("The directory in which the binary should be placed. Defaults to ./bin."),
         )
         .arg(Arg::new("exe").long("exe").short('e').help(concat!(
-            "The name of this project's executable. By default this is the same as the",
-            " project name, so for houseabsolute/precious we look for precious or",
-            r#" precious.exe. When running on Windows the ".exe" suffix will be added"#,
-            " as needed.",
+            "The name of this project's executable. By default, this is the same as the project",
+            " name, but matched case-insensitively. For example, with a project named",
+            " `houseabsolute/precious` it looks for `precious`, `precious.exe`, `Precious`,",
+            r#" `PRECIOUS.exe`, etc. When running on Windows the ".exe" suffix will be added as"#,
+            " needed, so you should never include this in the value passed to `exe`.",
         )))
         .arg(
             Arg::new("matching")

ubi-cli/tests/ubi.rs

@@ -436,6 +436,15 @@ fn integration_tests() -> Result<()> {
         make_exe_pathbuf(&["bin", "wren_cli"]),
     )?;
 
+    // The executable in the release files is named "perlnavigator", but the project is
+    // "PerlNavigator". This tests that exe extraction is case-insensitive.
+    run_test(
+        td.path(),
+        ubi.as_ref(),
+        &["--project", "bscan/PerlNavigator", "--tag", "v0.8.15"],
+        make_exe_pathbuf(&["bin", "perlnavigator"]),
+    )?;
+
     run_test(
         td.path(),
         ubi.as_ref(),

ubi/src/builder.rs

@@ -14,7 +14,7 @@ use reqwest::{
     header::{HeaderMap, HeaderValue, USER_AGENT},
     Client,
 };
-use std::{env, fs::create_dir_all, path::PathBuf, str::FromStr};
+use std::{env, path::PathBuf, str::FromStr};
 use url::Url;
 use which::which;
 
@@ -93,9 +93,11 @@ impl<'a> UbiBuilder<'a> {
         self
     }
 
-    /// Set the name of the executable to look for in archive files. By default this is the same as
-    /// the project name, so for `houseabsolute/precious` we look for `precious` or
-    /// `precious.exe`. When running on Windows the ".exe" suffix will be added as needed.
+    /// Set the name of the executable to look for in archive files. By default, this is the same as
+    /// the project name, but matched case-insensitively. For example, with a project named
+    /// `houseabsolute/precious` it looks for `precious`, `precious.exe`, `Precious`, `PRECIOUS.exe`,
+    /// etc. When running on Windows the ".exe" suffix will be added as needed, so you should never
+    /// include this in the value passed to `exe`.
     #[must_use]
     pub fn exe(mut self, exe: &'a str) -> Self {
         self.exe = Some(exe);
@@ -180,14 +182,14 @@ impl<'a> UbiBuilder<'a> {
             parse_project_name(self.project, asset_url.as_ref(), self.forge.clone())?;
         let exe = exe_name(self.exe, &project_name, &platform);
         let forge = self.new_forge(project_name, &forge_type)?;
-        let install_path = install_path(self.install_dir, &exe)?;
+        let install_dir = install_dir(self.install_dir)?;
         let is_musl = self.is_musl.unwrap_or_else(|| platform_is_musl(&platform));
 
         Ok(Ubi::new(
             forge,
             asset_url,
             AssetPicker::new(self.matching, platform, is_musl),
-            Installer::new(install_path, exe),
+            Installer::new(install_dir, exe),
             reqwest_client()?,
         ))
     }
@@ -274,17 +276,15 @@ fn parse_project_name(
     ))
 }
 
-fn install_path(install_dir: Option<PathBuf>, exe: &str) -> Result<PathBuf> {
-    let mut path = if let Some(i) = install_dir {
+fn install_dir(install_dir: Option<PathBuf>) -> Result<PathBuf> {
+    let path = if let Some(i) = install_dir {
         i
     } else {
         let mut i = env::current_dir()?;
         i.push("bin");
         i
     };
-    create_dir_all(&path)?;
-    path.push(exe);
-    debug!("install path = {}", path.to_string_lossy());
+    debug!("install dir = {}", path.to_string_lossy());
     Ok(path)
 }