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abbr: port abbreviation and abbr builtin to rust

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This commit is contained in:
Neeraj Jaiswal 2023-02-24 21:30:05 +05:30 committed by Johannes Altmanninger
parent b0ed37c2e0
commit f52569a800
23 changed files with 1166 additions and 755 deletions
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4
CMakeLists.txt
View file

@ -99,7 +99,7 @@ endif()
# List of sources for builtin functions.
set(FISH_BUILTIN_SRCS
src/builtin.cpp src/builtins/abbr.cpp src/builtins/argparse.cpp
src/builtin.cpp src/builtins/argparse.cpp
src/builtins/bg.cpp src/builtins/bind.cpp src/builtins/block.cpp
src/builtins/builtin.cpp src/builtins/cd.cpp src/builtins/command.cpp
src/builtins/commandline.cpp src/builtins/complete.cpp
@ -115,7 +115,7 @@ set(FISH_BUILTIN_SRCS
# List of other sources.
set(FISH_SRCS
src/ast.cpp src/abbrs.cpp src/autoload.cpp src/color.cpp src/common.cpp src/complete.cpp
src/ast.cpp src/autoload.cpp src/color.cpp src/common.cpp src/complete.cpp
src/env.cpp src/env_dispatch.cpp src/env_universal_common.cpp src/event.cpp
src/exec.cpp src/expand.cpp src/fallback.cpp src/fish_version.cpp
src/flog.cpp src/function.cpp src/highlight.cpp

1
fish-rust/build.rs
View file

@ -19,6 +19,7 @@ fn main() -> miette::Result<()> {
// This allows "Rust to be used from C++"
// This must come before autocxx so that cxx can emit its cxx.h header.
let source_files = vec![
"src/abbrs.rs",
"src/fd_monitor.rs",
"src/fd_readable_set.rs",
"src/fds.rs",

470
fish-rust/src/abbrs.rs Normal file
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@ -0,0 +1,470 @@
#![allow(clippy::extra_unused_lifetimes, clippy::needless_lifetimes)]
use std::{
collections::HashSet,
sync::{Arc, Mutex, MutexGuard},
};
use crate::wchar::{wstr, WString};
use crate::{
wchar::L,
wchar_ffi::{WCharFromFFI, WCharToFFI},
};
use cxx::{CxxWString, UniquePtr};
use once_cell::sync::Lazy;
use crate::abbrs::abbrs_ffi::abbrs_replacer_t;
use crate::ffi::re::regex_t;
use crate::parse_constants::SourceRange;
use self::abbrs_ffi::{abbreviation_t, abbrs_position_t, abbrs_replacement_t};
#[cxx::bridge]
mod abbrs_ffi {
extern "C++" {
include!("re.h");
include!("parse_constants.h");
type SourceRange = crate::parse_constants::SourceRange;
}
enum abbrs_position_t {
command,
anywhere,
}
struct abbrs_replacer_t {
replacement: UniquePtr<CxxWString>,
is_function: bool,
set_cursor_marker: UniquePtr<CxxWString>,
has_cursor_marker: bool,
}
struct abbrs_replacement_t {
range: SourceRange,
text: UniquePtr<CxxWString>,
cursor: usize,
has_cursor: bool,
}
struct abbreviation_t {
key: UniquePtr<CxxWString>,
replacement: UniquePtr<CxxWString>,
is_regex: bool,
}
extern "Rust" {
type GlobalAbbrs<'a>;
#[cxx_name = "abbrs_list"]
fn abbrs_list_ffi() -> Vec<abbreviation_t>;
#[cxx_name = "abbrs_match"]
fn abbrs_match_ffi(token: &CxxWString, position: abbrs_position_t)
-> Vec<abbrs_replacer_t>;
#[cxx_name = "abbrs_has_match"]
fn abbrs_has_match_ffi(token: &CxxWString, position: abbrs_position_t) -> bool;
#[cxx_name = "abbrs_replacement_from"]
fn abbrs_replacement_from_ffi(
range: SourceRange,
text: &CxxWString,
set_cursor_marker: &CxxWString,
has_cursor_marker: bool,
) -> abbrs_replacement_t;
#[cxx_name = "abbrs_get_set"]
unsafe fn abbrs_get_set_ffi<'a>() -> Box<GlobalAbbrs<'a>>;
unsafe fn add<'a>(
self: &mut GlobalAbbrs<'_>,
name: &CxxWString,
key: &CxxWString,
replacement: &CxxWString,
position: abbrs_position_t,
from_universal: bool,
);
unsafe fn erase<'a>(self: &mut GlobalAbbrs<'_>, name: &CxxWString);
}
}
static abbrs: Lazy<Arc<Mutex<AbbreviationSet>>> =
Lazy::new(|| Arc::new(Mutex::new(Default::default())));
pub fn with_abbrs<R>(cb: impl FnOnce(&AbbreviationSet) -> R) -> R {
let abbrs_g = abbrs.lock().unwrap();
cb(&abbrs_g)
}
pub fn with_abbrs_mut<R>(cb: impl FnOnce(&mut AbbreviationSet) -> R) -> R {
let mut abbrs_g = abbrs.lock().unwrap();
cb(&mut abbrs_g)
}
/// Controls where in the command line abbreviations may expand.
#[derive(Debug, PartialEq, Clone, Copy)]
pub enum Position {
Command, // expand in command position
Anywhere, // expand in any token
}
impl From<abbrs_position_t> for Position {
fn from(value: abbrs_position_t) -> Self {
match value {
abbrs_position_t::anywhere => Position::Anywhere,
abbrs_position_t::command => Position::Command,
_ => panic!("invalid abbrs_position_t"),
}
}
}
#[derive(Debug)]
pub struct Abbreviation {
// Abbreviation name. This is unique within the abbreviation set.
// This is used as the token to match unless we have a regex.
pub name: WString,
/// The key (recognized token) - either a literal or a regex pattern.
pub key: WString,
/// If set, use this regex to recognize tokens.
/// If unset, the key is to be interpreted literally.
/// Note that the fish interface enforces that regexes match the entire token;
/// we accomplish this by surrounding the regex in ^ and $.
pub regex: Option<UniquePtr<regex_t>>,
/// Replacement string.
pub replacement: WString,
/// If set, the replacement is a function name.
pub replacement_is_function: bool,
/// Expansion position.
pub position: Position,
/// If set, then move the cursor to the first instance of this string in the expansion.
pub set_cursor_marker: Option<WString>,
/// Mark if we came from a universal variable.
pub from_universal: bool,
}
impl Abbreviation {
// Construct from a name, a key which matches a token, a replacement token, a position, and
// whether we are derived from a universal variable.
pub fn new(
name: WString,
key: WString,
replacement: WString,
position: Position,
from_universal: bool,
) -> Self {
Self {
name,
key,
regex: None,
replacement,
replacement_is_function: false,
position,
set_cursor_marker: None,
from_universal,
}
}
// \return true if this is a regex abbreviation.
pub fn is_regex(&self) -> bool {
self.regex.is_some()
}
// \return true if we match a token at a given position.
pub fn matches(&self, token: &wstr, position: Position) -> bool {
if !self.matches_position(position) {
return false;
}
self.regex
.as_ref()
.map(|r| r.matches_ffi(&token.to_ffi()))
.unwrap_or(self.key == token)
}
// \return if we expand in a given position.
fn matches_position(&self, position: Position) -> bool {
return self.position == Position::Anywhere || self.position == position;
}
}
/// The result of an abbreviation expansion.
pub struct Replacer {
/// The string to use to replace the incoming token, either literal or as a function name.
replacement: WString,
/// If true, treat 'replacement' as the name of a function.
is_function: bool,
/// If set, the cursor should be moved to the first instance of this string in the expansion.
set_cursor_marker: Option<WString>,
}
impl From<Replacer> for abbrs_replacer_t {
fn from(value: Replacer) -> Self {
let has_cursor_marker = value.set_cursor_marker.is_some();
Self {
replacement: value.replacement.to_ffi(),
is_function: value.is_function,
set_cursor_marker: value.set_cursor_marker.unwrap_or_default().to_ffi(),
has_cursor_marker,
}
}
}
struct Replacement {
/// The original range of the token in the command line.
range: SourceRange,
/// The string to replace with.
text: WString,
/// The new cursor location, or none to use the default.
/// This is relative to the original range.
cursor: Option<usize>,
}
impl Replacement {
/// Construct a replacement from a replacer.
/// The \p range is the range of the text matched by the replacer in the command line.
/// The text is passed in separately as it may be the output of the replacer's function.
fn from(range: SourceRange, mut text: WString, set_cursor_marker: Option<WString>) -> Self {
let mut cursor = None;
if let Some(set_cursor_marker) = set_cursor_marker {
let matched = text
.as_char_slice()
.windows(set_cursor_marker.len())
.position(|w| w == set_cursor_marker.as_char_slice());
if let Some(start) = matched {
text.replace_range(start..(start + set_cursor_marker.len()), L!(""));
cursor = Some(start + range.start as usize)
}
}
Self {
range,
text,
cursor,
}
}
}
#[derive(Default)]
pub struct AbbreviationSet {
/// List of abbreviations, in definition order.
abbrs: Vec<Abbreviation>,
/// Set of used abbrevation names.
/// This is to avoid a linear scan when adding new abbreviations.
used_names: HashSet<WString>,
}
impl AbbreviationSet {
/// \return the list of replacers for an input token, in priority order.
/// The \p position is given to describe where the token was found.
pub fn r#match(&self, token: &wstr, position: Position) -> Vec<Replacer> {
let mut result = vec![];
// Later abbreviations take precedence so walk backwards.
for abbr in self.abbrs.iter().rev() {
if abbr.matches(token, position) {
result.push(Replacer {
replacement: abbr.replacement.clone(),
is_function: abbr.replacement_is_function,
set_cursor_marker: abbr.set_cursor_marker.clone(),
});
}
}
return result;
}
/// \return whether we would have at least one replacer for a given token.
pub fn has_match(&self, token: &wstr, position: Position) -> bool {
self.abbrs.iter().any(|abbr| abbr.matches(token, position))
}
/// Add an abbreviation. Any abbreviation with the same name is replaced.
pub fn add(&mut self, abbr: Abbreviation) {
assert!(!abbr.name.is_empty(), "Invalid name");
let inserted = self.used_names.insert(abbr.name.clone());
if !inserted {
// Name was already used, do a linear scan to find it.
let index = self
.abbrs
.iter()
.position(|a| a.name == abbr.name)
.expect("Abbreviation not found though its name was present");
self.abbrs.remove(index);
}
self.abbrs.push(abbr);
}
/// Rename an abbreviation. This asserts that the old name is used, and the new name is not; the
/// caller should check these beforehand with has_name().
pub fn rename(&mut self, old_name: &wstr, new_name: &wstr) {
let erased = self.used_names.remove(old_name);
let inserted = self.used_names.insert(new_name.to_owned());
assert!(
erased && inserted,
"Old name not found or new name already present"
);
for abbr in self.abbrs.iter_mut() {
if abbr.name == old_name {
abbr.name = new_name.to_owned();
break;
}
}
}
/// Erase an abbreviation by name.
/// \return true if erased, false if not found.
pub fn erase(&mut self, name: &wstr) -> bool {
let erased = self.used_names.remove(name);
if !erased {
return false;
}
for (index, abbr) in self.abbrs.iter().enumerate().rev() {
if abbr.name == name {
self.abbrs.remove(index);
return true;
}
}
panic!("Unable to find named abbreviation");
}
/// \return true if we have an abbreviation with the given name.
pub fn has_name(&self, name: &wstr) -> bool {
self.used_names.contains(name)
}
/// \return a reference to the abbreviation list.
pub fn list(&self) -> &[Abbreviation] {
&self.abbrs
}
}
/// \return the list of replacers for an input token, in priority order, using the global set.
/// The \p position is given to describe where the token was found.
fn abbrs_match_ffi(token: &CxxWString, position: abbrs_position_t) -> Vec<abbrs_replacer_t> {
with_abbrs(|set| set.r#match(&token.from_ffi(), position.into()))
.into_iter()
.map(|r| r.into())
.collect()
}
fn abbrs_has_match_ffi(token: &CxxWString, position: abbrs_position_t) -> bool {
with_abbrs(|set| set.has_match(&token.from_ffi(), position.into()))
}
fn abbrs_list_ffi() -> Vec<abbreviation_t> {
with_abbrs(|set| -> Vec<abbreviation_t> {
let list = set.list();
let mut result = Vec::with_capacity(list.len());
for abbr in list {
result.push(abbreviation_t {
key: abbr.key.to_ffi(),
replacement: abbr.replacement.to_ffi(),
is_regex: abbr.is_regex(),
})
}
result
})
}
fn abbrs_get_set_ffi<'a>() -> Box<GlobalAbbrs<'a>> {
let abbrs_g = abbrs.lock().unwrap();
Box::new(GlobalAbbrs { g: abbrs_g })
}
fn abbrs_replacement_from_ffi(
range: SourceRange,
text: &CxxWString,
set_cursor_marker: &CxxWString,
has_cursor_marker: bool,
) -> abbrs_replacement_t {
let cursor_marker = if has_cursor_marker {
Some(set_cursor_marker.from_ffi())
} else {
None
};
let replacement = Replacement::from(range, text.from_ffi(), cursor_marker);
abbrs_replacement_t {
range,
text: replacement.text.to_ffi(),
cursor: replacement.cursor.unwrap_or_default(),
has_cursor: replacement.cursor.is_some(),
}
}
pub struct GlobalAbbrs<'a> {
g: MutexGuard<'a, AbbreviationSet>,
}
impl<'a> GlobalAbbrs<'a> {
fn add(
&mut self,
name: &CxxWString,
key: &CxxWString,
replacement: &CxxWString,
position: abbrs_position_t,
from_universal: bool,
) {
self.g.add(Abbreviation::new(
name.from_ffi(),
key.from_ffi(),
replacement.from_ffi(),
position.into(),
from_universal,
));
}
fn erase(&mut self, name: &CxxWString) {
self.g.erase(&name.from_ffi());
}
}
use crate::ffi_tests::add_test;
add_test!("rename_abbrs", || {
use crate::wchar::wstr;
use crate::{
abbrs::{Abbreviation, Position},
wchar::L,
};
with_abbrs_mut(|abbrs_g| {
let mut add = |name: &wstr, repl: &wstr, position: Position| {
abbrs_g.add(Abbreviation {
name: name.into(),
key: name.into(),
regex: None,
replacement: repl.into(),
replacement_is_function: false,
position,
set_cursor_marker: None,
from_universal: false,
})
};
add(L!("gc"), L!("git checkout"), Position::Command);
add(L!("foo"), L!("bar"), Position::Command);
add(L!("gx"), L!("git checkout"), Position::Command);
add(L!("yin"), L!("yang"), Position::Anywhere);
assert!(!abbrs_g.has_name(L!("gcc")));
assert!(abbrs_g.has_name(L!("gc")));
abbrs_g.rename(L!("gc"), L!("gcc"));
assert!(abbrs_g.has_name(L!("gcc")));
assert!(!abbrs_g.has_name(L!("gc")));
assert!(!abbrs_g.erase(L!("gc")));
assert!(abbrs_g.erase(L!("gcc")));
assert!(!abbrs_g.erase(L!("gcc")));
})
});

604
fish-rust/src/builtins/abbr.rs Normal file
View file

@ -0,0 +1,604 @@
use crate::abbrs::{self, Abbreviation, Position};
use crate::builtins::shared::{
builtin_missing_argument, builtin_print_error_trailer, builtin_print_help,
builtin_unknown_option, io_streams_t, BUILTIN_ERR_TOO_MANY_ARGUMENTS, STATUS_CMD_ERROR,
STATUS_CMD_OK, STATUS_INVALID_ARGS,
};
use crate::common::{escape_string, valid_func_name, EscapeStringStyle};
use crate::env::flags::ENV_UNIVERSAL;
use crate::env::status::{ENV_NOT_FOUND, ENV_OK};
use crate::ffi::{self, parser_t};
use crate::re::regex_make_anchored;
use crate::wchar::{wstr, L};
use crate::wchar_ffi::WCharFromFFI;
use crate::wgetopt::{wgetopter_t, wopt, woption, woption_argument_t};
use crate::wutil::wgettext_fmt;
use libc::c_int;
pub use widestring::Utf32String as WString;
const CMD: &wstr = L!("abbr");
#[derive(Default, Debug)]
struct Options {
add: bool,
rename: bool,
show: bool,
list: bool,
erase: bool,
query: bool,
function: Option<WString>,
regex_pattern: Option<WString>,
position: Option<Position>,
set_cursor_marker: Option<WString>,
args: Vec<WString>,
}
impl Options {
fn validate(&mut self, streams: &mut io_streams_t) -> bool {
// Duplicate options?
let mut cmds = vec![];
if self.add {
cmds.push(L!("add"))
};
if self.rename {
cmds.push(L!("rename"))
};
if self.show {
cmds.push(L!("show"))
};
if self.list {
cmds.push(L!("list"))
};
if self.erase {
cmds.push(L!("erase"))
};
if self.query {
cmds.push(L!("query"))
};
if cmds.len() > 1 {
streams.err.append(wgettext_fmt!(
"%ls: Cannot combine options %ls\n",
CMD,
join(&cmds, L!(", "))
));
return false;
}
// If run with no options, treat it like --add if we have arguments,
// or --show if we do not have any arguments.
if cmds.is_empty() {
self.show = self.args.is_empty();
self.add = !self.args.is_empty();
}
if !self.add && self.position.is_some() {
streams.err.append(wgettext_fmt!(
"%ls: --position option requires --add\n",
CMD
));
return false;
}
if !self.add && self.regex_pattern.is_some() {
streams
.err
.append(wgettext_fmt!("%ls: --regex option requires --add\n", CMD));
return false;
}
if !self.add && self.function.is_some() {
streams.err.append(wgettext_fmt!(
"%ls: --function option requires --add\n",
CMD
));
return false;
}
if !self.add && self.set_cursor_marker.is_some() {
streams.err.append(wgettext_fmt!(
"%ls: --set-cursor option requires --add\n",
CMD
));
return false;
}
if self
.set_cursor_marker
.as_ref()
.map(|m| m.is_empty())
.unwrap_or(false)
{
streams.err.append(wgettext_fmt!(
"%ls: --set-cursor argument cannot be empty\n",
CMD
));
return false;
}
return true;
}
}
fn join(list: &[&wstr], sep: &wstr) -> WString {
let mut result = WString::new();
let mut iter = list.iter();
let first = match iter.next() {
Some(first) => first,
None => return result,
};
result.push_utfstr(first);
for s in iter {
result.push_utfstr(sep);
result.push_utfstr(s);
}
result
}
// Print abbreviations in a fish-script friendly way.
fn abbr_show(streams: &mut io_streams_t) -> Option<c_int> {
let style = EscapeStringStyle::Script(Default::default());
abbrs::with_abbrs(|abbrs| {
let mut result = WString::new();
for abbr in abbrs.list() {
result.clear();
let mut add_arg = |arg: &wstr| {
if !result.is_empty() {
result.push_str(" ");
}
result.push_utfstr(arg);
};
add_arg(L!("abbr -a"));
if abbr.is_regex() {
add_arg(L!("--regex"));
add_arg(&escape_string(&abbr.key, style));
}
if abbr.position != Position::Command {
add_arg(L!("--position"));
add_arg(L!("anywhere"));
}
if let Some(ref set_cursor_marker) = abbr.set_cursor_marker {
add_arg(L!("--set-cursor="));
add_arg(&escape_string(set_cursor_marker, style));
}
if abbr.replacement_is_function {
add_arg(L!("--function"));
add_arg(&escape_string(&abbr.replacement, style));
}
add_arg(L!("--"));
// Literal abbreviations have the name and key as the same.
// Regex abbreviations have a pattern separate from the name.
add_arg(&escape_string(&abbr.name, style));
if !abbr.replacement_is_function {
add_arg(&escape_string(&abbr.replacement, style));
}
if abbr.from_universal {
add_arg(L!("# imported from a universal variable, see `help abbr`"));
}
result.push('\n');
streams.out.append(&result);
}
});
return STATUS_CMD_OK;
}
// Print the list of abbreviation names.
fn abbr_list(opts: &Options, streams: &mut io_streams_t) -> Option<c_int> {
const subcmd: &wstr = L!("--list");
if !opts.args.is_empty() {
streams.err.append(wgettext_fmt!(
"%ls %ls: Unexpected argument -- '%ls'\n",
CMD,
subcmd,
opts.args[0]
));
return STATUS_INVALID_ARGS;
}
abbrs::with_abbrs(|abbrs| {
for abbr in abbrs.list() {
let mut name = abbr.name.clone();
name.push('\n');
streams.out.append(name);
}
});
return STATUS_CMD_OK;
}
// Rename an abbreviation, deleting any existing one with the given name.
fn abbr_rename(opts: &Options, streams: &mut io_streams_t) -> Option<c_int> {
const subcmd: &wstr = L!("--rename");
if opts.args.len() != 2 {
streams.err.append(wgettext_fmt!(
"%ls %ls: Requires exactly two arguments\n",
CMD,
subcmd
));
return STATUS_INVALID_ARGS;
}
let old_name = &opts.args[0];
let new_name = &opts.args[1];
if old_name.is_empty() || new_name.is_empty() {
streams.err.append(wgettext_fmt!(
"%ls %ls: Name cannot be empty\n",
CMD,
subcmd
));
return STATUS_INVALID_ARGS;
}
if contains_whitespace(new_name) {
streams.err.append(wgettext_fmt!(
"%ls %ls: Abbreviation '%ls' cannot have spaces in the word\n",
CMD,
subcmd,
new_name.as_utfstr()
));
return STATUS_INVALID_ARGS;
}
abbrs::with_abbrs_mut(|abbrs| -> Option<c_int> {
if !abbrs.has_name(old_name) {
streams.err.append(wgettext_fmt!(
"%ls %ls: No abbreviation named %ls\n",
CMD,
subcmd,
old_name.as_utfstr()
));
return STATUS_CMD_ERROR;
}
if abbrs.has_name(new_name) {
streams.err.append(wgettext_fmt!(
"%ls %ls: Abbreviation %ls already exists, cannot rename %ls\n",
CMD,
subcmd,
new_name.as_utfstr(),
old_name.as_utfstr()
));
return STATUS_INVALID_ARGS;
}
abbrs.rename(old_name, new_name);
STATUS_CMD_OK
})
}
fn contains_whitespace(val: &wstr) -> bool {
val.chars().any(char::is_whitespace)
}
// Test if any args is an abbreviation.
fn abbr_query(opts: &Options) -> Option<c_int> {
// Return success if any of our args matches an abbreviation.
abbrs::with_abbrs(|abbrs| {
for arg in opts.args.iter() {
if abbrs.has_name(arg) {
return STATUS_CMD_OK;
}
}
return STATUS_CMD_ERROR;
})
}
// Add a named abbreviation.
fn abbr_add(opts: &Options, streams: &mut io_streams_t) -> Option<c_int> {
const subcmd: &wstr = L!("--add");
if opts.args.len() < 2 && opts.function.is_none() {
streams.err.append(wgettext_fmt!(
"%ls %ls: Requires at least two arguments\n",
CMD,
subcmd
));
return STATUS_INVALID_ARGS;
}
if opts.args.is_empty() || opts.args[0].is_empty() {
streams.err.append(wgettext_fmt!(
"%ls %ls: Name cannot be empty\n",
CMD,
subcmd
));
return STATUS_INVALID_ARGS;
}
let name = &opts.args[0];
if name.chars().any(|c| c.is_whitespace()) {
streams.err.append(wgettext_fmt!(
"%ls %ls: Abbreviation '%ls' cannot have spaces in the word\n",
CMD,
subcmd,
name.as_utfstr()
));
return STATUS_INVALID_ARGS;
}
let mut regex = None;
let key = if let Some(ref regex_pattern) = opts.regex_pattern {
// Compile the regex as given; if that succeeds then wrap it in our ^$ so it matches the
// entire token.
let flags = ffi::re::flags_t { icase: false };
let result = ffi::try_compile(regex_pattern, &flags);
if result.has_error() {
let error = result.get_error();
streams.err.append(wgettext_fmt!(
"%ls: Regular expression compile error: %ls\n",
CMD,
&error.message().from_ffi()
));
streams
.err
.append(wgettext_fmt!("%ls: %ls\n", CMD, regex_pattern.as_utfstr()));
streams
.err
.append(wgettext_fmt!("%ls: %*ls\n", CMD, error.offset, "^"));
return STATUS_INVALID_ARGS;
}
let anchored = regex_make_anchored(regex_pattern);
let mut result = ffi::try_compile(&anchored, &flags);
assert!(
!result.has_error(),
"Anchored compilation should have succeeded"
);
let re = result.as_mut().get_regex();
assert!(!re.is_null(), "Anchored compilation should have succeeded");
let _ = regex.insert(re);
regex_pattern
} else {
// The name plays double-duty as the token to replace.
name
};
if opts.function.is_some() && opts.args.len() > 1 {
streams
.err
.append(wgettext_fmt!(BUILTIN_ERR_TOO_MANY_ARGUMENTS, L!("abbr")));
return STATUS_INVALID_ARGS;
}
let replacement = if let Some(ref function) = opts.function {
// Abbreviation function names disallow spaces.
// This is to prevent accidental usage of e.g. `--function 'string replace'`
if !valid_func_name(function) || contains_whitespace(function) {
streams.err.append(wgettext_fmt!(
"%ls: Invalid function name: %ls\n",
CMD,
function.as_utfstr()
));
return STATUS_INVALID_ARGS;
}
function.clone()
} else {
let mut replacement = WString::new();
for iter in opts.args.iter().skip(1) {
if !replacement.is_empty() {
replacement.push(' ')
};
replacement.push_utfstr(iter);
}
replacement
};
let position = opts.position.unwrap_or(Position::Command);
// Note historically we have allowed overwriting existing abbreviations.
abbrs::with_abbrs_mut(move |abbrs| {
abbrs.add(Abbreviation {
name: name.clone(),
key: key.clone(),
regex,
replacement,
replacement_is_function: opts.function.is_some(),
position,
set_cursor_marker: opts.set_cursor_marker.clone(),
from_universal: false,
})
});
return STATUS_CMD_OK;
}
// Erase the named abbreviations.
fn abbr_erase(opts: &Options, parser: &mut parser_t) -> Option<c_int> {
if opts.args.is_empty() {
// This has historically been a silent failure.
return STATUS_CMD_ERROR;
}
// Erase each. If any is not found, return ENV_NOT_FOUND which is historical.
abbrs::with_abbrs_mut(|abbrs| -> Option<c_int> {
let mut result = STATUS_CMD_OK;
for arg in &opts.args {
if !abbrs.erase(arg) {
result = Some(ENV_NOT_FOUND);
}
// Erase the old uvar - this makes `abbr -e` work.
let esc_src = escape_string(arg, EscapeStringStyle::Script(Default::default()));
if !esc_src.is_empty() {
let var_name = WString::from_str("_fish_abbr_") + esc_src.as_utfstr();
let ret = parser.remove_var(&var_name, ENV_UNIVERSAL);
if ret == autocxx::c_int(ENV_OK) {
result = STATUS_CMD_OK
};
}
}
result
})
}
pub fn abbr(
parser: &mut parser_t,
streams: &mut io_streams_t,
argv: &mut [&wstr],
) -> Option<c_int> {
let mut argv_read = Vec::with_capacity(argv.len());
argv_read.extend_from_slice(argv);
let cmd = argv[0];
// Note 1 is returned by wgetopt to indicate a non-option argument.
const NON_OPTION_ARGUMENT: char = 1 as char;
const SET_CURSOR_SHORT: char = 2 as char;
const RENAME_SHORT: char = 3 as char;
// Note the leading '-' causes wgetopter to return arguments in order, instead of permuting
// them. We need this behavior for compatibility with pre-builtin abbreviations where options
// could be given literally, for example `abbr e emacs -nw`.
const short_options: &wstr = L!("-:af:r:seqgUh");
const longopts: &[woption] = &[
wopt(L!("add"), woption_argument_t::no_argument, 'a'),
wopt(L!("position"), woption_argument_t::required_argument, 'p'),
wopt(L!("regex"), woption_argument_t::required_argument, 'r'),
wopt(
L!("set-cursor"),
woption_argument_t::optional_argument,
SET_CURSOR_SHORT,
),
wopt(L!("function"), woption_argument_t::required_argument, 'f'),
wopt(L!("rename"), woption_argument_t::no_argument, RENAME_SHORT),
wopt(L!("erase"), woption_argument_t::no_argument, 'e'),
wopt(L!("query"), woption_argument_t::no_argument, 'q'),
wopt(L!("show"), woption_argument_t::no_argument, 's'),
wopt(L!("list"), woption_argument_t::no_argument, 'l'),
wopt(L!("global"), woption_argument_t::no_argument, 'g'),
wopt(L!("universal"), woption_argument_t::no_argument, 'U'),
wopt(L!("help"), woption_argument_t::no_argument, 'h'),
];
let mut opts = Options::default();
let mut w = wgetopter_t::new(short_options, longopts, argv);
while let Some(c) = w.wgetopt_long() {
match c {
NON_OPTION_ARGUMENT => {
// If --add is specified (or implied by specifying no other commands), all
// unrecognized options after the *second* non-option argument are considered part
// of the abbreviation expansion itself, rather than options to the abbr command.
// For example, `abbr e emacs -nw` works, because `-nw` occurs after the second
// non-option, and --add is implied.
if let Some(arg) = w.woptarg {
opts.args.push(arg.to_owned())
};
if opts.args.len() >= 2
&& !(opts.rename || opts.show || opts.list || opts.erase || opts.query)
{
break;
}
}
'a' => opts.add = true,
'p' => {
if opts.position.is_some() {
streams.err.append(wgettext_fmt!(
"%ls: Cannot specify multiple positions\n",
CMD
));
return STATUS_INVALID_ARGS;
}
if w.woptarg == Some(L!("command")) {
opts.position = Some(Position::Command);
} else if w.woptarg == Some(L!("anywhere")) {
opts.position = Some(Position::Anywhere);
} else {
streams.err.append(wgettext_fmt!(
"%ls: Invalid position '%ls'\n",
CMD,
w.woptarg.unwrap_or_default()
));
streams
.err
.append(L!("Position must be one of: command, anywhere.\n"));
return STATUS_INVALID_ARGS;
}
}
'r' => {
if opts.regex_pattern.is_some() {
streams.err.append(wgettext_fmt!(
"%ls: Cannot specify multiple regex patterns\n",
CMD
));
return STATUS_INVALID_ARGS;
}
opts.regex_pattern = w.woptarg.map(ToOwned::to_owned);
}
SET_CURSOR_SHORT => {
if opts.set_cursor_marker.is_some() {
streams.err.append(wgettext_fmt!(
"%ls: Cannot specify multiple set-cursor options\n",
CMD
));
return STATUS_INVALID_ARGS;
}
// The default set-cursor indicator is '%'.
let _ = opts
.set_cursor_marker
.insert(w.woptarg.unwrap_or(L!("%")).to_owned());
}
'f' => opts.function = w.woptarg.map(ToOwned::to_owned),
RENAME_SHORT => opts.rename = true,
'e' => opts.erase = true,
'q' => opts.query = true,
's' => opts.show = true,
'l' => opts.list = true,
// Kept for backwards compatibility but ignored.
// This basically does nothing now.
'g' => {}
'U' => {
// Kept and made ineffective, so we warn.
streams.err.append(wgettext_fmt!(
"%ls: Warning: Option '%ls' was removed and is now ignored",
cmd,
argv_read[w.woptind - 1]
));
builtin_print_error_trailer(parser, streams, cmd);
}
'h' => {
builtin_print_help(parser, streams, cmd);
return STATUS_CMD_OK;
}
':' => {
builtin_missing_argument(parser, streams, cmd, argv[w.woptind - 1], true);
return STATUS_INVALID_ARGS;
}
'?' => {
builtin_unknown_option(parser, streams, cmd, argv[w.woptind - 1], false);
return STATUS_INVALID_ARGS;
}
_ => {
panic!("unexpected retval from wgeopter.next()");
}
}
}
for arg in argv_read[w.woptind..].iter() {
opts.args.push((*arg).into());
}
if !opts.validate(streams) {
return STATUS_INVALID_ARGS;
}
if opts.add {
return abbr_add(&opts, streams);
};
if opts.show {
return abbr_show(streams);
};
if opts.list {
return abbr_list(&opts, streams);
};
if opts.rename {
return abbr_rename(&opts, streams);
};
if opts.erase {
return abbr_erase(&opts, parser);
};
if opts.query {
return abbr_query(&opts);
};
// validate() should error or ensure at least one path is set.
panic!("unreachable");
}

1
fish-rust/src/builtins/mod.rs
View file

@ -1,5 +1,6 @@
pub mod shared;
pub mod abbr;
pub mod contains;
pub mod echo;
pub mod emit;

1
fish-rust/src/builtins/shared.rs
View file

@ -118,6 +118,7 @@ pub fn run_builtin(
builtin: RustBuiltin,
) -> Option<c_int> {
match builtin {
RustBuiltin::Abbr => super::abbr::abbr(parser, streams, args),
RustBuiltin::Contains => super::contains::contains(parser, streams, args),
RustBuiltin::Echo => super::echo::echo(parser, streams, args),
RustBuiltin::Emit => super::emit::emit(parser, streams, args),

19
fish-rust/src/common.rs
View file

@ -1,4 +1,5 @@
use crate::ffi;
use crate::wchar_ext::WExt;
use crate::wchar_ffi::c_str;
use crate::wchar_ffi::{wstr, WCharFromFFI, WString};
use std::{ffi::c_uint, mem};
@ -92,3 +93,21 @@ pub fn escape_string(s: &wstr, style: EscapeStringStyle) -> WString {
ffi::escape_string(c_str!(s), flags_int.into(), style).from_ffi()
}
/// Test if the string is a valid function name.
pub fn valid_func_name(name: &wstr) -> bool {
if name.is_empty() {
return false;
};
if name.char_at(0) == '-' {
return false;
};
// A function name needs to be a valid path, so no / and no NULL.
if name.find_char('/').is_some() {
return false;
};
if name.find_char('\0').is_some() {
return false;
};
true
}

5
fish-rust/src/ffi.rs
View file

@ -38,6 +38,7 @@ include_cpp! {
generate!("wperror")
generate_pod!("pipes_ffi_t")
generate!("env_stack_t")
generate!("make_pipes_ffi")
generate!("valid_var_name_char")
@ -102,6 +103,10 @@ impl parser_t {
unsafe { &mut *libdata }
}
pub fn remove_var(&mut self, var: &wstr, flags: c_int) -> c_int {
self.pin().remove_var_ffi(&var.to_ffi(), flags)
}
}
pub fn try_compile(anchored: &wstr, flags: &re::flags_t) -> Pin<Box<re::regex_result_ffi>> {

3
fish-rust/src/lib.rs
View file

@ -34,4 +34,7 @@ mod wchar_ffi;
mod wgetopt;
mod wutil;
mod abbrs;
mod builtins;
mod env;
mod re;

2
fish-rust/src/parse_constants.rs
View file

@ -70,7 +70,7 @@ mod parse_constants_ffi {
}
/// A range of source code.
#[derive(PartialEq, Eq)]
#[derive(PartialEq, Eq, Clone, Copy)]
struct SourceRange {
start: u32,
length: u32,

134
src/abbrs.cpp
View file

@ -1,134 +0,0 @@
#include "config.h" // IWYU pragma: keep
#include "abbrs.h"
#include "env.h"
#include "global_safety.h"
#include "wcstringutil.h"
abbreviation_t::abbreviation_t(wcstring name, wcstring key, wcstring replacement,
abbrs_position_t position, bool from_universal)
: name(std::move(name)),
key(std::move(key)),
replacement(std::move(replacement)),
position(position),
from_universal(from_universal) {}
bool abbreviation_t::matches_position(abbrs_position_t position) const {
return this->position == abbrs_position_t::anywhere || this->position == position;
}
bool abbreviation_t::matches(const wcstring &token, abbrs_position_t position) const {
if (!this->matches_position(position)) {
return false;
}
if (this->is_regex()) {
return this->regex->match(token).has_value();
} else {
return this->key == token;
}
}
acquired_lock<abbrs_set_t> abbrs_get_set() {
static owning_lock<abbrs_set_t> abbrs;
return abbrs.acquire();
}
abbrs_replacer_list_t abbrs_set_t::match(const wcstring &token, abbrs_position_t position) const {
abbrs_replacer_list_t result{};
// Later abbreviations take precedence so walk backwards.
for (auto it = abbrs_.rbegin(); it != abbrs_.rend(); ++it) {
const abbreviation_t &abbr = *it;
if (abbr.matches(token, position)) {
result.push_back(abbrs_replacer_t{abbr.replacement, abbr.replacement_is_function,
abbr.set_cursor_marker});
}
}
return result;
}
bool abbrs_set_t::has_match(const wcstring &token, abbrs_position_t position) const {
for (const auto &abbr : abbrs_) {
if (abbr.matches(token, position)) {
return true;
}
}
return false;
}
void abbrs_set_t::add(abbreviation_t &&abbr) {
assert(!abbr.name.empty() && "Invalid name");
bool inserted = used_names_.insert(abbr.name).second;
if (!inserted) {
// Name was already used, do a linear scan to find it.
auto where = std::find_if(abbrs_.begin(), abbrs_.end(), [&](const abbreviation_t &other) {
return other.name == abbr.name;
});
assert(where != abbrs_.end() && "Abbreviation not found though its name was present");
abbrs_.erase(where);
}
abbrs_.push_back(std::move(abbr));
}
void abbrs_set_t::rename(const wcstring &old_name, const wcstring &new_name) {
bool erased = this->used_names_.erase(old_name) > 0;
bool inserted = this->used_names_.insert(new_name).second;
assert(erased && inserted && "Old name not found or new name already present");
(void)erased;
(void)inserted;
for (auto &abbr : abbrs_) {
if (abbr.name == old_name) {
abbr.name = new_name;
break;
}
}
}
bool abbrs_set_t::erase(const wcstring &name) {
bool erased = this->used_names_.erase(name) > 0;
if (!erased) {
return false;
}
for (auto it = abbrs_.begin(); it != abbrs_.end(); ++it) {
if (it->name == name) {
abbrs_.erase(it);
return true;
}
}
assert(false && "Unable to find named abbreviation");
return false;
}
void abbrs_set_t::import_from_uvars(const std::unordered_map<wcstring, env_var_t> &uvars) {
const wchar_t *const prefix = L"_fish_abbr_";
size_t prefix_len = wcslen(prefix);
const bool from_universal = true;
for (const auto &kv : uvars) {
if (string_prefixes_string(prefix, kv.first)) {
wcstring escaped_name = kv.first.substr(prefix_len);
wcstring name;
if (unescape_string(escaped_name, &name, unescape_flags_t{}, STRING_STYLE_VAR)) {
wcstring key = name;
wcstring replacement = join_strings(kv.second.as_list(), L' ');
this->add(abbreviation_t{std::move(name), std::move(key), std::move(replacement),
abbrs_position_t::command, from_universal});
}
}
}
}
// static
abbrs_replacement_t abbrs_replacement_t::from(source_range_t range, wcstring text,
const abbrs_replacer_t &replacer) {
abbrs_replacement_t result{};
result.range = range;
result.text = std::move(text);
if (replacer.set_cursor_marker.has_value()) {
size_t pos = result.text.find(*replacer.set_cursor_marker);
if (pos != wcstring::npos) {
result.text.erase(pos, replacer.set_cursor_marker->size());
result.cursor = pos + range.start;
}
}
return result;
}

138
src/abbrs.h
View file

@ -11,139 +11,17 @@
#include "parse_constants.h"
#include "re.h"
class env_var_t;
#if INCLUDE_RUST_HEADERS
/// Controls where in the command line abbreviations may expand.
enum class abbrs_position_t : uint8_t {
command, // expand in command position
anywhere, // expand in any token
};
#include "abbrs.rs.h"
struct abbreviation_t {
// Abbreviation name. This is unique within the abbreviation set.
// This is used as the token to match unless we have a regex.
wcstring name{};
#else
// Hacks to allow us to compile without Rust headers.
struct abbrs_replacer_t;
/// The key (recognized token) - either a literal or a regex pattern.
wcstring key{};
struct abbrs_replacement_t;
/// If set, use this regex to recognize tokens.
/// If unset, the key is to be interpreted literally.
/// Note that the fish interface enforces that regexes match the entire token;
/// we accomplish this by surrounding the regex in ^ and $.
maybe_t<re::regex_t> regex{};
/// Replacement string.
wcstring replacement{};
/// If set, the replacement is a function name.
bool replacement_is_function{};
/// Expansion position.
abbrs_position_t position{abbrs_position_t::command};
/// If set, then move the cursor to the first instance of this string in the expansion.
maybe_t<wcstring> set_cursor_marker{};
/// Mark if we came from a universal variable.
bool from_universal{};
// \return true if this is a regex abbreviation.
bool is_regex() const { return this->regex.has_value(); }
// \return true if we match a token at a given position.
bool matches(const wcstring &token, abbrs_position_t position) const;
// Construct from a name, a key which matches a token, a replacement token, a position, and
// whether we are derived from a universal variable.
explicit abbreviation_t(wcstring name, wcstring key, wcstring replacement,
abbrs_position_t position = abbrs_position_t::command,
bool from_universal = false);
abbreviation_t() = default;
private:
// \return if we expand in a given position.
bool matches_position(abbrs_position_t position) const;
};
/// The result of an abbreviation expansion.
struct abbrs_replacer_t {
/// The string to use to replace the incoming token, either literal or as a function name.
wcstring replacement;
/// If true, treat 'replacement' as the name of a function.
bool is_function;
/// If set, the cursor should be moved to the first instance of this string in the expansion.
maybe_t<wcstring> set_cursor_marker;
};
using abbrs_replacer_list_t = std::vector<abbrs_replacer_t>;
/// A helper type for replacing a range in a string.
struct abbrs_replacement_t {
/// The original range of the token in the command line.
source_range_t range{};
/// The string to replace with.
wcstring text{};
/// The new cursor location, or none to use the default.
/// This is relative to the original range.
maybe_t<size_t> cursor{};
/// Construct a replacement from a replacer.
/// The \p range is the range of the text matched by the replacer in the command line.
/// The text is passed in separately as it may be the output of the replacer's function.
static abbrs_replacement_t from(source_range_t range, wcstring text,
const abbrs_replacer_t &replacer);
};
class abbrs_set_t {
public:
/// \return the list of replacers for an input token, in priority order.
/// The \p position is given to describe where the token was found.
abbrs_replacer_list_t match(const wcstring &token, abbrs_position_t position) const;
/// \return whether we would have at least one replacer for a given token.
bool has_match(const wcstring &token, abbrs_position_t position) const;
/// Add an abbreviation. Any abbreviation with the same name is replaced.
void add(abbreviation_t &&abbr);
/// Rename an abbreviation. This asserts that the old name is used, and the new name is not; the
/// caller should check these beforehand with has_name().
void rename(const wcstring &old_name, const wcstring &new_name);
/// Erase an abbreviation by name.
/// \return true if erased, false if not found.
bool erase(const wcstring &name);
/// \return true if we have an abbreviation with the given name.
bool has_name(const wcstring &name) const { return used_names_.count(name) > 0; }
/// \return a reference to the abbreviation list.
const std::vector<abbreviation_t> &list() const { return abbrs_; }
/// Import from a universal variable set.
void import_from_uvars(const std::unordered_map<wcstring, env_var_t> &uvars);
private:
/// List of abbreviations, in definition order.
std::vector<abbreviation_t> abbrs_{};
/// Set of used abbrevation names.
/// This is to avoid a linear scan when adding new abbreviations.
std::unordered_set<wcstring> used_names_;
};
/// \return the global mutable set of abbreviations.
acquired_lock<abbrs_set_t> abbrs_get_set();
/// \return the list of replacers for an input token, in priority order, using the global set.
/// The \p position is given to describe where the token was found.
inline abbrs_replacer_list_t abbrs_match(const wcstring &token, abbrs_position_t position) {
return abbrs_get_set()->match(token, position);
}
struct abbreviation_t;
#endif
#endif

6
src/builtin.cpp
View file

@ -29,7 +29,6 @@
#include <memory>
#include <string>
#include "builtins/abbr.h"
#include "builtins/argparse.h"
#include "builtins/bg.h"
#include "builtins/bind.h"
@ -359,7 +358,7 @@ static constexpr builtin_data_t builtin_datas[] = {
{L":", &builtin_true, N_(L"Return a successful result")},
{L"[", &builtin_test, N_(L"Test a condition")},
{L"_", &builtin_gettext, N_(L"Translate a string")},
{L"abbr", &builtin_abbr, N_(L"Manage abbreviations")},
{L"abbr", &implemented_in_rust, N_(L"Manage abbreviations")},
{L"and", &builtin_generic, N_(L"Run command if last command succeeded")},
{L"argparse", &builtin_argparse, N_(L"Parse options in fish script")},
{L"begin", &builtin_generic, N_(L"Create a block of code")},
@ -523,6 +522,9 @@ const wchar_t *builtin_get_desc(const wcstring &name) {
}
static maybe_t<RustBuiltin> try_get_rust_builtin(const wcstring &cmd) {
if (cmd == L"abbr") {
return RustBuiltin::Abbr;
}
if (cmd == L"contains") {
return RustBuiltin::Contains;
}

1
src/builtin.h
View file

@ -109,6 +109,7 @@ int parse_help_only_cmd_opts(help_only_cmd_opts_t &opts, int *optind, int argc,
/// An enum of the builtins implemented in Rust.
enum RustBuiltin : int32_t {
Abbr,
Contains,
Echo,
Emit,

435
src/builtins/abbr.cpp
View file

@ -1,435 +0,0 @@
// Implementation of the read builtin.
#include "config.h" // IWYU pragma: keep
#include <termios.h>
#include <unistd.h>
#include <algorithm>
#include <cerrno>
#include <climits>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cwchar>
#include <memory>
#include <numeric>
#include <string>
#include <vector>
#include "../abbrs.h"
#include "../builtin.h"
#include "../common.h"
#include "../env.h"
#include "../io.h"
#include "../parser.h"
#include "../re.h"
#include "../wcstringutil.h"
#include "../wgetopt.h"
#include "../wutil.h"
namespace {
static const wchar_t *const CMD = L"abbr";
struct abbr_options_t {
bool add{};
bool rename{};
bool show{};
bool list{};
bool erase{};
bool query{};
maybe_t<wcstring> function;
maybe_t<wcstring> regex_pattern;
maybe_t<abbrs_position_t> position{};
maybe_t<wcstring> set_cursor_marker{};
wcstring_list_t args;
bool validate(io_streams_t &streams) {
// Duplicate options?
wcstring_list_t cmds;
if (add) cmds.push_back(L"add");
if (rename) cmds.push_back(L"rename");
if (show) cmds.push_back(L"show");
if (list) cmds.push_back(L"list");
if (erase) cmds.push_back(L"erase");
if (query) cmds.push_back(L"query");
if (cmds.size() > 1) {
streams.err.append_format(_(L"%ls: Cannot combine options %ls\n"), CMD,
join_strings(cmds, L", ").c_str());
return false;
}
// If run with no options, treat it like --add if we have arguments,
// or --show if we do not have any arguments.
if (cmds.empty()) {
show = args.empty();
add = !args.empty();
}
if (!add && position.has_value()) {
streams.err.append_format(_(L"%ls: --position option requires --add\n"), CMD);
return false;
}
if (!add && regex_pattern.has_value()) {
streams.err.append_format(_(L"%ls: --regex option requires --add\n"), CMD);
return false;
}
if (!add && function.has_value()) {
streams.err.append_format(_(L"%ls: --function option requires --add\n"), CMD);
return false;
}
if (!add && set_cursor_marker.has_value()) {
streams.err.append_format(_(L"%ls: --set-cursor option requires --add\n"), CMD);
return false;
}
if (set_cursor_marker.has_value() && set_cursor_marker->empty()) {
streams.err.append_format(_(L"%ls: --set-cursor argument cannot be empty\n"), CMD);
return false;
}
return true;
}
};
// Print abbreviations in a fish-script friendly way.
static int abbr_show(const abbr_options_t &, io_streams_t &streams) {
const auto abbrs = abbrs_get_set();
wcstring_list_t comps{};
for (const auto &abbr : abbrs->list()) {
comps.clear();
comps.push_back(L"abbr -a");
if (abbr.is_regex()) {
comps.push_back(L"--regex");
comps.push_back(escape_string(abbr.key));
}
if (abbr.position != abbrs_position_t::command) {
comps.push_back(L"--position");
comps.push_back(L"anywhere");
}
if (abbr.set_cursor_marker.has_value()) {
comps.push_back(L"--set-cursor=" + escape_string(*abbr.set_cursor_marker));
}
if (abbr.replacement_is_function) {
comps.push_back(L"--function");
comps.push_back(escape_string(abbr.replacement));
}
comps.push_back(L"--");
// Literal abbreviations have the name and key as the same.
// Regex abbreviations have a pattern separate from the name.
comps.push_back(escape_string(abbr.name));
if (!abbr.replacement_is_function) {
comps.push_back(escape_string(abbr.replacement));
}
if (abbr.from_universal) comps.push_back(_(L"# imported from a universal variable, see `help abbr`"));
wcstring result = join_strings(comps, L' ');
result.push_back(L'\n');
streams.out.append(result);
}
return STATUS_CMD_OK;
}
// Print the list of abbreviation names.
static int abbr_list(const abbr_options_t &opts, io_streams_t &streams) {
const wchar_t *const subcmd = L"--list";
if (opts.args.size() > 0) {
streams.err.append_format(_(L"%ls %ls: Unexpected argument -- '%ls'\n"), CMD, subcmd,
opts.args.front().c_str());
return STATUS_INVALID_ARGS;
}
const auto abbrs = abbrs_get_set();
for (const auto &abbr : abbrs->list()) {
wcstring name = abbr.name;
name.push_back(L'\n');
streams.out.append(name);
}
return STATUS_CMD_OK;
}
// Rename an abbreviation, deleting any existing one with the given name.
static int abbr_rename(const abbr_options_t &opts, io_streams_t &streams) {
const wchar_t *const subcmd = L"--rename";
if (opts.args.size() != 2) {
streams.err.append_format(_(L"%ls %ls: Requires exactly two arguments\n"), CMD, subcmd);
return STATUS_INVALID_ARGS;
}
const wcstring &old_name = opts.args[0];
const wcstring &new_name = opts.args[1];
if (old_name.empty() || new_name.empty()) {
streams.err.append_format(_(L"%ls %ls: Name cannot be empty\n"), CMD, subcmd);
return STATUS_INVALID_ARGS;
}
if (std::any_of(new_name.begin(), new_name.end(), iswspace)) {
streams.err.append_format(
_(L"%ls %ls: Abbreviation '%ls' cannot have spaces in the word\n"), CMD, subcmd,
new_name.c_str());
return STATUS_INVALID_ARGS;
}
auto abbrs = abbrs_get_set();
if (!abbrs->has_name(old_name)) {
streams.err.append_format(_(L"%ls %ls: No abbreviation named %ls\n"), CMD, subcmd,
old_name.c_str());
return STATUS_CMD_ERROR;
}
if (abbrs->has_name(new_name)) {
streams.err.append_format(
_(L"%ls %ls: Abbreviation %ls already exists, cannot rename %ls\n"), CMD, subcmd,
new_name.c_str(), old_name.c_str());
return STATUS_INVALID_ARGS;
}
abbrs->rename(old_name, new_name);
return STATUS_CMD_OK;
}
// Test if any args is an abbreviation.
static int abbr_query(const abbr_options_t &opts, io_streams_t &) {
// Return success if any of our args matches an abbreviation.
const auto abbrs = abbrs_get_set();
for (const auto &arg : opts.args) {
if (abbrs->has_name(arg)) {
return STATUS_CMD_OK;
}
}
return STATUS_CMD_ERROR;
}
// Add a named abbreviation.
static int abbr_add(const abbr_options_t &opts, io_streams_t &streams) {
const wchar_t *const subcmd = L"--add";
if (opts.args.size() < 2 && !opts.function.has_value()) {
streams.err.append_format(_(L"%ls %ls: Requires at least two arguments\n"), CMD, subcmd);
return STATUS_INVALID_ARGS;
}
if (opts.args.empty() || opts.args[0].empty()) {
streams.err.append_format(_(L"%ls %ls: Name cannot be empty\n"), CMD, subcmd);
return STATUS_INVALID_ARGS;
}
const wcstring &name = opts.args[0];
if (std::any_of(name.begin(), name.end(), iswspace)) {
streams.err.append_format(
_(L"%ls %ls: Abbreviation '%ls' cannot have spaces in the word\n"), CMD, subcmd,
name.c_str());
return STATUS_INVALID_ARGS;
}
maybe_t<re::regex_t> regex;
wcstring key;
if (!opts.regex_pattern.has_value()) {
// The name plays double-duty as the token to replace.
key = name;
} else {
key = *opts.regex_pattern;
re::re_error_t error{};
// Compile the regex as given; if that succeeds then wrap it in our ^$ so it matches the
// entire token.
if (!re::regex_t::try_compile(*opts.regex_pattern, re::flags_t{}, &error)) {
streams.err.append_format(_(L"%ls: Regular expression compile error: %ls\n"), CMD,
error.message().c_str());
streams.err.append_format(L"%ls: %ls\n", CMD, opts.regex_pattern->c_str());
streams.err.append_format(L"%ls: %*ls\n", CMD, static_cast<int>(error.offset), L"^");
return STATUS_INVALID_ARGS;
}
wcstring anchored = re::make_anchored(*opts.regex_pattern);
regex = re::regex_t::try_compile(anchored, re::flags_t{}, &error);
assert(regex.has_value() && "Anchored compilation should have succeeded");
}
if (opts.function.has_value() && opts.args.size() > 1) {
streams.err.append_format(BUILTIN_ERR_TOO_MANY_ARGUMENTS, L"abbr");
return STATUS_INVALID_ARGS;
}
wcstring replacement;
if (opts.function.has_value()) {
replacement = *opts.function;
} else {
for (auto iter = opts.args.begin() + 1; iter != opts.args.end(); ++iter) {
if (!replacement.empty()) replacement.push_back(L' ');
replacement.append(*iter);
}
}
// Abbreviation function names disallow spaces.
// This is to prevent accidental usage of e.g. `--function 'string replace'`
if (opts.function.has_value() &&
(!valid_func_name(replacement) || replacement.find(L' ') != wcstring::npos)) {
streams.err.append_format(_(L"%ls: Invalid function name: %ls\n"), CMD,
replacement.c_str());
return STATUS_INVALID_ARGS;
}
abbrs_position_t position = opts.position ? *opts.position : abbrs_position_t::command;
// Note historically we have allowed overwriting existing abbreviations.
abbreviation_t abbr{std::move(name), std::move(key), std::move(replacement), position};
abbr.regex = std::move(regex);
abbr.replacement_is_function = opts.function.has_value();
abbr.set_cursor_marker = opts.set_cursor_marker;
abbrs_get_set()->add(std::move(abbr));
return STATUS_CMD_OK;
}
// Erase the named abbreviations.
static int abbr_erase(const abbr_options_t &opts, parser_t &parser, io_streams_t &) {
if (opts.args.empty()) {
// This has historically been a silent failure.
return STATUS_CMD_ERROR;
}
// Erase each. If any is not found, return ENV_NOT_FOUND which is historical.
int result = STATUS_CMD_OK;
auto abbrs = abbrs_get_set();
for (const auto &arg : opts.args) {
if (!abbrs->erase(arg)) {
result = ENV_NOT_FOUND;
}
// Erase the old uvar - this makes `abbr -e` work.
wcstring esc_src = escape_string(arg, 0, STRING_STYLE_VAR);
if (!esc_src.empty()) {
wcstring var_name = L"_fish_abbr_" + esc_src;
auto ret = parser.vars().remove(var_name, ENV_UNIVERSAL);
if (ret == ENV_OK) result = STATUS_CMD_OK;
}
}
return result;
}
} // namespace
maybe_t<int> builtin_abbr(parser_t &parser, io_streams_t &streams, const wchar_t **argv) {
const wchar_t *cmd = argv[0];
abbr_options_t opts;
// Note 1 is returned by wgetopt to indicate a non-option argument.
enum { NON_OPTION_ARGUMENT = 1, SET_CURSOR_SHORT, RENAME_SHORT };
// Note the leading '-' causes wgetopter to return arguments in order, instead of permuting
// them. We need this behavior for compatibility with pre-builtin abbreviations where options
// could be given literally, for example `abbr e emacs -nw`.
static const wchar_t *const short_options = L"-:af:r:seqgUh";
static const struct woption long_options[] = {
{L"add", no_argument, 'a'}, {L"position", required_argument, 'p'},
{L"regex", required_argument, 'r'}, {L"set-cursor", optional_argument, SET_CURSOR_SHORT},
{L"function", required_argument, 'f'}, {L"rename", no_argument, RENAME_SHORT},
{L"erase", no_argument, 'e'}, {L"query", no_argument, 'q'},
{L"show", no_argument, 's'}, {L"list", no_argument, 'l'},
{L"global", no_argument, 'g'}, {L"universal", no_argument, 'U'},
{L"help", no_argument, 'h'}, {}};
int argc = builtin_count_args(argv);
int opt;
wgetopter_t w;
bool in_expansion = false;
while (!in_expansion &&
(opt = w.wgetopt_long(argc, argv, short_options, long_options, nullptr)) != -1) {
switch (opt) {
case NON_OPTION_ARGUMENT:
// If --add is specified (or implied by specifying no other commands), all
// unrecognized options after the *second* non-option argument are considered part
// of the abbreviation expansion itself, rather than options to the abbr command.
// For example, `abbr e emacs -nw` works, because `-nw` occurs after the second
// non-option, and --add is implied.
opts.args.push_back(w.woptarg);
if (opts.args.size() >= 2 &&
!(opts.rename || opts.show || opts.list || opts.erase || opts.query)) {
in_expansion = true;
}
break;
case 'a':
opts.add = true;
break;
case 'p': {
if (opts.position.has_value()) {
streams.err.append_format(_(L"%ls: Cannot specify multiple positions\n"), CMD);
return STATUS_INVALID_ARGS;
}
if (!wcscmp(w.woptarg, L"command")) {
opts.position = abbrs_position_t::command;
} else if (!wcscmp(w.woptarg, L"anywhere")) {
opts.position = abbrs_position_t::anywhere;
} else {
streams.err.append_format(_(L"%ls: Invalid position '%ls'\n"
L"Position must be one of: command, anywhere.\n"),
CMD, w.woptarg);
return STATUS_INVALID_ARGS;
}
break;
}
case 'r': {
if (opts.regex_pattern.has_value()) {
streams.err.append_format(_(L"%ls: Cannot specify multiple regex patterns\n"),
CMD);
return STATUS_INVALID_ARGS;
}
opts.regex_pattern = w.woptarg;
break;
}
case SET_CURSOR_SHORT: {
if (opts.set_cursor_marker.has_value()) {
streams.err.append_format(
_(L"%ls: Cannot specify multiple set-cursor options\n"), CMD);
return STATUS_INVALID_ARGS;
}
// The default set-cursor indicator is '%'.
opts.set_cursor_marker = w.woptarg ? w.woptarg : L"%";
break;
}
case 'f':
opts.function = wcstring(w.woptarg);
break;
case RENAME_SHORT:
opts.rename = true;
break;
case 'e':
opts.erase = true;
break;
case 'q':
opts.query = true;
break;
case 's':
opts.show = true;
break;
case 'l':
opts.list = true;
break;
case 'g':
// Kept for backwards compatibility but ignored.
// This basically does nothing now.
break;
case 'U': {
// Kept and made ineffective, so we warn.
streams.err.append_format(_(L"%ls: Warning: Option '%ls' was removed and is now ignored"), cmd, argv[w.woptind - 1]);
builtin_print_error_trailer(parser, streams.err, cmd);
break;
}
case 'h': {
builtin_print_help(parser, streams, cmd);
return STATUS_CMD_OK;
}
case ':': {
builtin_missing_argument(parser, streams, cmd, argv[w.woptind - 1]);
return STATUS_INVALID_ARGS;
}
case '?': {
builtin_unknown_option(parser, streams, cmd, argv[w.woptind - 1]);
return STATUS_INVALID_ARGS;
}
}
}
opts.args.insert(opts.args.end(), argv + w.woptind, argv + argc);
if (!opts.validate(streams)) {
return STATUS_INVALID_ARGS;
}
if (opts.add) return abbr_add(opts, streams);
if (opts.show) return abbr_show(opts, streams);
if (opts.list) return abbr_list(opts, streams);
if (opts.rename) return abbr_rename(opts, streams);
if (opts.erase) return abbr_erase(opts, parser, streams);
if (opts.query) return abbr_query(opts, streams);
// validate() should error or ensure at least one path is set.
DIE("unreachable");
return STATUS_INVALID_ARGS;
}

11
src/builtins/abbr.h
View file

@ -1,11 +0,0 @@
// Prototypes for executing builtin_abbr function.
#ifndef FISH_BUILTIN_ABBR_H
#define FISH_BUILTIN_ABBR_H
#include "../maybe.h"
class parser_t;
struct io_streams_t;
maybe_t<int> builtin_abbr(parser_t &parser, io_streams_t &streams, const wchar_t **argv);
#endif

10
src/complete.cpp
View file

@ -679,11 +679,11 @@ void completer_t::complete_abbr(const wcstring &cmd) {
completion_list_t possible_comp;
std::unordered_map<wcstring, wcstring> descs;
{
auto abbrs = abbrs_get_set();
for (const auto &abbr : abbrs->list()) {
if (!abbr.is_regex()) {
possible_comp.emplace_back(abbr.key);
descs[abbr.key] = abbr.replacement;
auto abbrs = abbrs_list();
for (const auto &abbr : abbrs) {
if (!abbr.is_regex) {
possible_comp.emplace_back(*abbr.key);
descs[*abbr.key] = *abbr.replacement;
}
}
}

17
src/env.cpp
View file

@ -455,7 +455,22 @@ void env_init(const struct config_paths_t *paths, bool do_uvars, bool default_pa
// Import any abbreviations from uvars.
// Note we do not dynamically react to changes.
abbrs_get_set()->import_from_uvars(table);
const wchar_t *const prefix = L"_fish_abbr_";
size_t prefix_len = wcslen(prefix);
const bool from_universal = true;
auto abbrs = abbrs_get_set();
for (const auto &kv : table) {
if (string_prefixes_string(prefix, kv.first)) {
wcstring escaped_name = kv.first.substr(prefix_len);
wcstring name;
if (unescape_string(escaped_name, &name, unescape_flags_t{}, STRING_STYLE_VAR)) {
wcstring key = name;
wcstring replacement = join_strings(kv.second.as_list(), L' ');
abbrs->add(std::move(name), std::move(key), std::move(replacement),
abbrs_position_t::command, from_universal);
}
}
}
}
}

32
src/fish_tests.cpp
View file

@ -2403,15 +2403,11 @@ static void test_ifind_fuzzy() {
static void test_abbreviations() {
say(L"Testing abbreviations");
{
auto literal_abbr = [](const wchar_t *name, const wchar_t *repl,
abbrs_position_t pos = abbrs_position_t::command) {
return abbreviation_t(name, name /* key */, repl, pos);
};
auto abbrs = abbrs_get_set();
abbrs->add(literal_abbr(L"gc", L"git checkout"));
abbrs->add(literal_abbr(L"foo", L"bar"));
abbrs->add(literal_abbr(L"gx", L"git checkout"));
abbrs->add(literal_abbr(L"yin", L"yang", abbrs_position_t::anywhere));
abbrs->add(L"gc", L"gc", L"git checkout", abbrs_position_t::command, false);
abbrs->add(L"foo", L"foo", L"bar", abbrs_position_t::command, false);
abbrs->add(L"gx", L"gx", L"git checkout", abbrs_position_t::command, false);
abbrs->add(L"yin", L"yin", L"yang", abbrs_position_t::anywhere, false);
}
// Helper to expand an abbreviation, enforcing we have no more than one result.
@ -2423,7 +2419,7 @@ static void test_abbreviations() {
if (result.empty()) {
return none();
}
return result.front().replacement;
return *result.front().replacement;
};
auto cmd = abbrs_position_t::command;
@ -2445,7 +2441,7 @@ static void test_abbreviations() {
cmdline, cursor_pos.value_or(cmdline.size()), parser_t::principal_parser())) {
wcstring cmdline_expanded = cmdline;
std::vector<highlight_spec_t> colors{cmdline_expanded.size()};
apply_edit(&cmdline_expanded, &colors, edit_t{replacement->range, replacement->text});
apply_edit(&cmdline_expanded, &colors, edit_t{replacement->range, *replacement->text});
return cmdline_expanded;
}
return none_t();
@ -2499,19 +2495,6 @@ static void test_abbreviations() {
err(L"command yin incorrectly expanded on line %ld to '%ls'", (long)__LINE__,
result->c_str());
}
// Renaming works.
{
auto abbrs = abbrs_get_set();
do_test(!abbrs->has_name(L"gcc"));
do_test(abbrs->has_name(L"gc"));
abbrs->rename(L"gc", L"gcc");
do_test(abbrs->has_name(L"gcc"));
do_test(!abbrs->has_name(L"gc"));
do_test(!abbrs->erase(L"gc"));
do_test(abbrs->erase(L"gcc"));
do_test(!abbrs->erase(L"gcc"));
}
}
/// Test path functions.
@ -3486,7 +3469,8 @@ static void test_complete() {
// Test abbreviations.
function_add(L"testabbrsonetwothreefour", func_props);
abbrs_get_set()->add(abbreviation_t(L"somename", L"testabbrsonetwothreezero", L"expansion"));
abbrs_get_set()->add(L"somename", L"testabbrsonetwothreezero", L"expansion",
abbrs_position_t::command, false);
completions = complete(L"testabbrsonetwothree", {}, parser->context());
do_test(completions.size() == 2);
do_test(completions.at(0).completion == L"four");

3
src/highlight.cpp
View file

@ -1333,8 +1333,7 @@ static bool command_is_valid(const wcstring &cmd, statement_decoration_t decorat
if (!is_valid && function_ok) is_valid = function_exists_no_autoload(cmd);
// Abbreviations
if (!is_valid && abbreviation_ok)
is_valid = abbrs_get_set()->has_match(cmd, abbrs_position_t::command);
if (!is_valid && abbreviation_ok) is_valid = abbrs_has_match(cmd, abbrs_position_t::command);
// Regular commands
if (!is_valid && command_ok) is_valid = path_get_path(cmd, vars).has_value();

3
src/parse_constants.h
View file

@ -31,10 +31,11 @@ using parse_error_list_t = ParseErrorList;
#include "config.h"
struct source_range_t {
struct SourceRange {
source_offset_t start;
source_offset_t length;
};
using source_range_t = SourceRange;
enum class parse_token_type_t : uint8_t {
invalid = 1,

2
src/parser.h
View file

@ -395,6 +395,8 @@ class parser_t : public std::enable_shared_from_this<parser_t> {
env_stack_t &vars() { return *variables; }
const env_stack_t &vars() const { return *variables; }
int remove_var_ffi(const wcstring &key, int mode) { return vars().remove(key, mode); }
/// Get the library data.
library_data_t &libdata() { return library_data; }
const library_data_t &libdata() const { return library_data; }

17
src/reader.cpp
View file

@ -1376,16 +1376,17 @@ void reader_data_t::pager_selection_changed() {
/// Expand an abbreviation replacer, which may mean running its function.
/// \return the replacement, or none to skip it. This may run fish script!
maybe_t<abbrs_replacement_t> expand_replacer(source_range_t range, const wcstring &token,
maybe_t<abbrs_replacement_t> expand_replacer(SourceRange range, const wcstring &token,
const abbrs_replacer_t &repl, parser_t &parser) {
if (!repl.is_function) {
// Literal replacement cannot fail.
FLOGF(abbrs, L"Expanded literal abbreviation <%ls> -> <%ls>", token.c_str(),
repl.replacement.c_str());
return abbrs_replacement_t::from(range, repl.replacement, repl);
(*repl.replacement).c_str());
return abbrs_replacement_from(range, *repl.replacement, *repl.set_cursor_marker,
repl.has_cursor_marker);
}
wcstring cmd = escape_string(repl.replacement);
wcstring cmd = escape_string(*repl.replacement);
cmd.push_back(L' ');
cmd.append(escape_string(token));
@ -1398,7 +1399,7 @@ maybe_t<abbrs_replacement_t> expand_replacer(source_range_t range, const wcstrin
}
wcstring result = join_strings(outputs, L'\n');
FLOGF(abbrs, L"Expanded function abbreviation <%ls> -> <%ls>", token.c_str(), result.c_str());
return abbrs_replacement_t::from(range, std::move(result), repl);
return abbrs_replacement_from(range, result, *repl.set_cursor_marker, repl.has_cursor_marker);
}
// Extract all the token ranges in \p str, along with whether they are an undecorated command.
@ -1501,8 +1502,12 @@ bool reader_data_t::expand_abbreviation_at_cursor(size_t cursor_backtrack) {
size_t cursor_pos = el->position() - std::min(el->position(), cursor_backtrack);
if (auto replacement =
reader_expand_abbreviation_at_cursor(el->text(), cursor_pos, this->parser())) {
push_edit(el, edit_t{replacement->range, std::move(replacement->text)});
push_edit(el, edit_t{replacement->range, *replacement->text});
if (replacement->has_cursor) {
update_buff_pos(el, replacement->cursor);
} else {
update_buff_pos(el, none());
}
result = true;
}
}