add --iglob flag

Working with Chris Stadler, implemented
https://github.com/BurntSushi/ripgrep/issues/163#issuecomment-300012592

ignore/src/gitignore.rs

@@ -254,6 +254,7 @@ pub struct GitignoreBuilder {
     builder: GlobSetBuilder,
     root: PathBuf,
     globs: Vec<Glob>,
+    case_insensitive: bool,
 }
 
 impl GitignoreBuilder {
@@ -269,6 +270,7 @@ impl GitignoreBuilder {
             builder: GlobSetBuilder::new(),
             root: strip_prefix("./", root).unwrap_or(root).to_path_buf(),
             globs: vec![],
+            case_insensitive: false,
         }
     }
 
@@ -424,6 +426,7 @@ impl GitignoreBuilder {
         let parsed = try!(
             GlobBuilder::new(&glob.actual)
                 .literal_separator(literal_separator)
+                .case_insensitive(self.case_insensitive)
                 .build()
                 .map_err(|err| {
                     Error::Glob {
@@ -435,6 +438,16 @@ impl GitignoreBuilder {
         self.globs.push(glob);
         Ok(self)
     }
+
+    /// Toggle whether the globs should be matched case insensitively or not.
+    /// 
+    /// This is disabled by default.
+    pub fn case_insensitive(
+        &mut self, yes: bool
+    ) -> Result<&mut GitignoreBuilder, Error> {
+        self.case_insensitive = yes;
+        Ok(self)
+    }
 }
 
 /// Return the file path of the current environment's global gitignore file.
@@ -617,4 +630,21 @@ mod tests {
     fn regression_106() {
         gi_from_str("/", " ");
     }
+
+    #[test]
+    fn case_insensitive() {
+        let gi = GitignoreBuilder::new(ROOT)
+            .case_insensitive(true).unwrap()
+            .add_str(None, "*.html").unwrap()
+            .build().unwrap();
+        assert!(gi.matched("foo.html", false).is_ignore());
+        assert!(gi.matched("foo.HTML", false).is_ignore());
+        assert!(!gi.matched("foo.htm", false).is_ignore());
+        assert!(!gi.matched("foo.HTM", false).is_ignore());
+    }
+
+    ignored!(cs1, ROOT, "*.html", "foo.html");
+    not_ignored!(cs2, ROOT, "*.html", "foo.HTML");
+    not_ignored!(cs3, ROOT, "*.html", "foo.htm");
+    not_ignored!(cs4, ROOT, "*.html", "foo.HTM");
 }

ignore/src/overrides.rs

@@ -137,6 +137,16 @@ impl OverrideBuilder {
         try!(self.builder.add_line(None, glob));
         Ok(self)
     }
+
+    /// Toggle whether the globs should be matched case insensitively or not.
+    /// 
+    /// This is disabled by default.
+    pub fn case_insensitive(
+        &mut self, yes: bool
+    ) -> Result<&mut OverrideBuilder, Error> {
+        try!(self.builder.case_insensitive(yes));
+        Ok(self)
+    }
 }
 
 #[cfg(test)]
@@ -220,4 +230,27 @@ mod tests {
         let ov = ov(&["!/bar"]);
         assert!(ov.matched("./foo/bar", false).is_none());
     }
+
+    #[test]
+    fn case_insensitive() {
+        let ov = OverrideBuilder::new(ROOT)
+            .case_insensitive(true).unwrap()
+            .add("*.html").unwrap()
+            .build().unwrap();
+        assert!(ov.matched("foo.html", false).is_whitelist());
+        assert!(ov.matched("foo.HTML", false).is_whitelist());
+        assert!(ov.matched("foo.htm", false).is_ignore());
+        assert!(ov.matched("foo.HTM", false).is_ignore());
+    }
+
+    #[test]
+    fn default_case_sensitive() {
+        let ov = OverrideBuilder::new(ROOT)
+            .add("*.html").unwrap()
+            .build().unwrap();
+        assert!(ov.matched("foo.html", false).is_whitelist());
+        assert!(ov.matched("foo.HTML", false).is_ignore());
+        assert!(ov.matched("foo.htm", false).is_ignore());
+        assert!(ov.matched("foo.HTM", false).is_ignore());
+    }
 }

src/app.rs

@@ -90,6 +90,9 @@ pub fn app() -> App<'static, 'static> {
         .arg(flag("glob").short("g")
              .takes_value(true).multiple(true).number_of_values(1)
              .value_name("GLOB"))
+        .arg(flag("iglob")
+             .takes_value(true).multiple(true).number_of_values(1)
+             .value_name("GLOB"))
         .arg(flag("ignore-case").short("i"))
         .arg(flag("line-number").short("n"))
         .arg(flag("no-line-number").short("N").overrides_with("line-number"))
@@ -270,6 +273,13 @@ lazy_static! {
               ignore logic. Multiple glob flags may be used. Globbing \
               rules match .gitignore globs. Precede a glob with a ! \
               to exclude it.");
+        doc!(h, "iglob",
+             "Include or exclude files/directories case insensitively.",
+             "Include or exclude files/directories for searching that \
+              match the given glob. This always overrides any other \
+              ignore logic. Multiple glob flags may be used. Globbing \
+              rules match .gitignore globs. Precede a glob with a ! \
+              to exclude it. Globs are matched case insensitively.");
         doc!(h, "ignore-case",
              "Case insensitive search.",
              "Case insensitive search. This is overridden by \

src/args.rs

@@ -771,6 +771,14 @@ impl<'a> ArgMatches<'a> {
         for glob in self.values_of_lossy_vec("glob") {
             try!(ovr.add(&glob));
         }
+        // this is smelly. In the long run it might make sense
+        // to change overridebuilder to be like globsetbuilder
+        // but this would be a breaking change to the ignore crate
+        // so it is being shelved for now...
+        try!(ovr.case_insensitive(true));
+        for glob in self.values_of_lossy_vec("iglob") {
+            try!(ovr.add(&glob));
+        }
         ovr.build().map_err(From::from)
     }
 

tests/tests.rs

@@ -336,6 +336,21 @@ sherlock!(glob_negate, "Sherlock", ".", |wd: WorkDir, mut cmd: Command| {
     assert_eq!(lines, "file.py:Sherlock\n");
 });
 
+sherlock!(iglob, "Sherlock", ".", |wd: WorkDir, mut cmd: Command| {
+    wd.create("file.HTML", "Sherlock");
+    cmd.arg("--iglob").arg("*.html");
+    let lines: String = wd.stdout(&mut cmd);
+    assert_eq!(lines, "file.HTML:Sherlock\n");
+});
+
+sherlock!(csglob, "Sherlock", ".", |wd: WorkDir, mut cmd: Command| {
+    wd.create("file1.HTML", "Sherlock");
+    wd.create("file2.html", "Sherlock");
+    cmd.arg("--glob").arg("*.html");
+    let lines: String = wd.stdout(&mut cmd);
+    assert_eq!(lines, "file2.html:Sherlock\n");
+});
+
 sherlock!(count, "Sherlock", ".", |wd: WorkDir, mut cmd: Command| {
     cmd.arg("--count");
     let lines: String = wd.stdout(&mut cmd);