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|
/*!
The types module provides a way of associating glob patterns on file names to
file types.
*/
use std::collections::HashMap;
use std::error::Error as StdError;
use std::fmt;
use std::path::Path;
use regex;
use gitignore::{Match, Pattern};
use glob::{self, MatchOptions};
const TYPE_EXTENSIONS: &'static [(&'static str, &'static [&'static str])] = &[
("asm", &["*.asm", "*.s", "*.S"]),
("awk", &["*.awk"]),
("c", &["*.c", "*.h", "*.H"]),
("cbor", &["*.cbor"]),
("clojure", &["*.clj", "*.cljs"]),
("cmake", &["CMakeLists.txt"]),
("coffeescript", &["*.coffee"]),
("cpp", &[
"*.C", "*.cc", "*.cpp", "*.cxx",
"*.h", "*.H", "*.hh", "*.hpp",
]),
("csharp", &["*.cs"]),
("css", &["*.css"]),
("cython", &["*.pyx"]),
("dart", &["*.dart"]),
("d", &["*.d"]),
("elisp", &["*.el"]),
("erlang", &["*.erl", "*.hrl"]),
("fortran", &[
"*.f", "*.F", "*.f77", "*.F77", "*.pfo",
"*.f90", "*.F90", "*.f95", "*.F95",
]),
("go", &["*.go"]),
("groovy", &["*.groovy"]),
("haskell", &["*.hs", "*.lhs"]),
("html", &["*.htm", "*.html"]),
("java", &["*.java"]),
("js", &["*.js"]),
("json", &["*.json"]),
("jsonl", &["*.jsonl"]),
("lisp", &["*.el", "*.jl", "*.lisp", "*.lsp", "*.sc", "*.scm"]),
("lua", &["*.lua"]),
("m4", &["*.ac", "*.m4"]),
("make", &["gnumakefile", "Gnumakefile", "makefile", "Makefile", "*.mk"]),
("markdown", &["*.md"]),
("matlab", &["*.m"]),
("mk", &["mkfile"]),
("ml", &["*.ml"]),
("objc", &["*.h", "*.m"]),
("objcpp", &["*.h", "*.mm"]),
("ocaml", &["*.ml", "*.mli", "*.mll", "*.mly"]),
("perl", &["*.perl", "*.pl", "*.PL", "*.plh", "*.plx", "*.pm"]),
("php", &["*.php", "*.php3", "*.php4", "*.php5", "*.phtml"]),
("py", &["*.py"]),
("readme", &["README*", "*README"]),
("rr", &["*.R"]),
("rst", &["*.rst"]),
("ruby", &["*.rb"]),
("rust", &["*.rs"]),
("scala", &["*.scala"]),
("sh", &["*.bash", "*.csh", "*.ksh", "*.sh", "*.tcsh"]),
("sql", &["*.sql"]),
("tex", &["*.tex", "*.cls", "*.sty"]),
("txt", &["*.txt"]),
("toml", &["*.toml", "Cargo.lock"]),
("vala", &["*.vala"]),
("vimscript", &["*.vim"]),
("xml", &["*.xml"]),
("yacc", &["*.y"]),
("yaml", &["*.yaml", "*.yml"]),
];
/// Describes all the possible failure conditions for building a file type
/// matcher.
#[derive(Debug)]
pub enum Error {
/// We tried to select (or negate) a file type that is not defined.
UnrecognizedFileType(String),
/// A user specified file type definition could not be parsed.
InvalidDefinition,
/// There was an error building the matcher (probably a bad glob).
Glob(glob::Error),
/// There was an error compiling a glob as a regex.
Regex(regex::Error),
}
impl StdError for Error {
fn description(&self) -> &str {
match *self {
Error::UnrecognizedFileType(_) => "unrecognized file type",
Error::InvalidDefinition => "invalid definition",
Error::Glob(ref err) => err.description(),
Error::Regex(ref err) => err.description(),
}
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::UnrecognizedFileType(ref ty) => {
write!(f, "unrecognized file type: {}", ty)
}
Error::InvalidDefinition => {
write!(f, "invalid definition (format is type:glob, e.g., \
html:*.html)")
}
Error::Glob(ref err) => err.fmt(f),
Error::Regex(ref err) => err.fmt(f),
}
}
}
impl From<glob::Error> for Error {
fn from(err: glob::Error) -> Error {
Error::Glob(err)
}
}
impl From<regex::Error> for Error {
fn from(err: regex::Error) -> Error {
Error::Regex(err)
}
}
/// A single file type definition.
#[derive(Clone, Debug)]
pub struct FileTypeDef {
name: String,
pats: Vec<String>,
}
impl FileTypeDef {
/// Return the name of this file type.
pub fn name(&self) -> &str {
&self.name
}
/// Return the glob patterns used to recognize this file type.
pub fn patterns(&self) -> &[String] {
&self.pats
}
}
/// Types is a file type matcher.
#[derive(Clone, Debug)]
pub struct Types {
selected: Option<glob::SetYesNo>,
negated: Option<glob::SetYesNo>,
has_selected: bool,
unmatched_pat: Pattern,
}
impl Types {
/// Creates a new file type matcher from the given Gitignore matcher. If
/// not Gitignore matcher is provided, then the file type matcher has no
/// effect.
///
/// If has_selected is true, then at least one file type was selected.
/// Therefore, any non-matches should be ignored.
fn new(
selected: Option<glob::SetYesNo>,
negated: Option<glob::SetYesNo>,
has_selected: bool,
) -> Types {
Types {
selected: selected,
negated: negated,
has_selected: has_selected,
unmatched_pat: Pattern {
from: Path::new("<filetype>").to_path_buf(),
original: "<N/A>".to_string(),
pat: "<N/A>".to_string(),
whitelist: false,
only_dir: false,
},
}
}
/// Creates a new file type matcher that never matches.
pub fn empty() -> Types {
Types::new(None, None, false)
}
/// Returns a match for the given path against this file type matcher.
///
/// The path is considered whitelisted if it matches a selected file type.
/// The path is considered ignored if it matched a negated file type.
/// If at least one file type is selected and path doesn't match, then
/// the path is also considered ignored.
pub fn matched<P: AsRef<Path>>(&self, path: P, is_dir: bool) -> Match {
// If we don't have any matcher, then we can't do anything.
if self.negated.is_none() && self.selected.is_none() {
return Match::None;
}
// File types don't apply to directories.
if is_dir {
return Match::None;
}
let path = path.as_ref();
let name = match path.file_name() {
Some(name) => name.to_string_lossy(),
None if self.has_selected => {
return Match::Ignored(&self.unmatched_pat
|