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Merge branch 'master' of github.com:nushell/nushell

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This commit is contained in:
Sam Hedin 2020-06-04 23:18:40 +02:00
commit 0728c23ec0
19 changed files with 379 additions and 410 deletions
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41
Cargo.lock generated
View File

@ -863,6 +863,16 @@ dependencies = [
"dirs-sys",
]
[[package]]
name = "dirs-next"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1cbcf9241d9e8d106295bd496bbe2e9cffd5fa098f2a8c9e2bbcbf09773c11a8"
dependencies = [
"cfg-if",
"dirs-sys-next",
]
[[package]]
name = "dirs-sys"
version = "0.3.4"
@ -875,6 +885,17 @@ dependencies = [
"winapi 0.3.8",
]
[[package]]
name = "dirs-sys-next"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9c60f7b8a8953926148223260454befb50c751d3c50e1c178c4fd1ace4083c9a"
dependencies = [
"libc",
"redox_users",
"winapi 0.3.8",
]
[[package]]
name = "doc-comment"
version = "0.3.3"
@ -2175,7 +2196,6 @@ dependencies = [
"nu_plugin_fetch",
"nu_plugin_inc",
"nu_plugin_match",
"nu_plugin_parse",
"nu_plugin_post",
"nu_plugin_ps",
"nu_plugin_start",
@ -2476,19 +2496,6 @@ dependencies = [
"regex",
]
[[package]]
name = "nu_plugin_parse"
version = "0.14.1"
dependencies = [
"futures 0.3.5",
"nu-build",
"nu-errors",
"nu-plugin",
"nu-protocol",
"nu-source",
"regex",
]
[[package]]
name = "nu_plugin_post"
version = "0.14.1"
@ -3337,12 +3344,12 @@ dependencies = [
[[package]]
name = "rustyline"
version = "6.1.2"
version = "6.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1cd20b28d972040c627e209eb29f19c24a71a19d661cc5a220089176e20ee202"
checksum = "3358c21cbbc1a751892528db4e1de4b7a2b6a73f001e215aaba97d712cfa9777"
dependencies = [
"cfg-if",
"dirs 2.0.2",
"dirs-next",
"libc",
"log",
"memchr",

9
Cargo.toml
View File

@ -29,7 +29,6 @@ nu_plugin_binaryview = { version = "0.14.1", path = "./crates/nu_plugin_binaryvi
nu_plugin_fetch = { version = "0.14.1", path = "./crates/nu_plugin_fetch", optional=true }
nu_plugin_inc = { version = "0.14.1", path = "./crates/nu_plugin_inc", optional=true }
nu_plugin_match = { version = "0.14.1", path = "./crates/nu_plugin_match", optional=true }
nu_plugin_parse = { version = "0.14.1", path = "./crates/nu_plugin_parse", optional=true }
nu_plugin_post = { version = "0.14.1", path = "./crates/nu_plugin_post", optional=true }
nu_plugin_ps = { version = "0.14.1", path = "./crates/nu_plugin_ps", optional=true }
nu_plugin_start = { version = "0.1.0", path = "./crates/nu_plugin_start", optional=true }
@ -59,7 +58,7 @@ nu-build = { version = "0.14.1", path = "./crates/nu-build" }
[features]
default = ["sys", "ps", "textview", "inc"]
stable = ["default", "starship-prompt", "binaryview", "match", "tree", "parse", "post", "fetch", "clipboard-cli", "trash-support", "start"]
stable = ["default", "starship-prompt", "binaryview", "match", "tree", "post", "fetch", "clipboard-cli", "trash-support", "start"]
# Default
textview = ["crossterm", "syntect", "url", "nu_plugin_textview"]
@ -71,7 +70,6 @@ inc = ["semver", "nu_plugin_inc"]
binaryview = ["nu_plugin_binaryview"]
fetch = ["nu_plugin_fetch"]
match = ["nu_plugin_match"]
parse = ["nu_plugin_parse"]
post = ["nu_plugin_post"]
trace = ["nu-parser/trace"]
tree = ["nu_plugin_tree"]
@ -120,11 +118,6 @@ name = "nu_plugin_stable_match"
path = "src/plugins/nu_plugin_stable_match.rs"
required-features = ["match"]
[[bin]]
name = "nu_plugin_stable_parse"
path = "src/plugins/nu_plugin_stable_parse.rs"
required-features = ["parse"]
[[bin]]
name = "nu_plugin_stable_post"
path = "src/plugins/nu_plugin_stable_post.rs"

2
crates/nu-cli/Cargo.toml
View File

@ -68,7 +68,7 @@ query_interface = "0.3.5"
rand = "0.7"
regex = "1"
roxmltree = "0.11.0"
rustyline = "6.1.2"
rustyline = "6.2.0"
serde = { version = "1.0.110", features = ["derive"] }
serde-hjson = "0.9.1"
serde_bytes = "0.11.4"

1
crates/nu-cli/src/cli.rs
View File

@ -291,6 +291,7 @@ pub fn create_default_context(
whole_stream_command(Lines),
whole_stream_command(Trim),
whole_stream_command(Echo),
whole_stream_command(Parse),
whole_stream_command(Str),
whole_stream_command(StrToDecimal),
whole_stream_command(StrToInteger),

2
crates/nu-cli/src/commands.rs
View File

@ -74,6 +74,7 @@ pub(crate) mod mv;
pub(crate) mod next;
pub(crate) mod nth;
pub(crate) mod open;
pub(crate) mod parse;
pub(crate) mod pivot;
pub(crate) mod plugin;
pub(crate) mod prepend;
@ -203,6 +204,7 @@ pub(crate) use mv::Move;
pub(crate) use next::Next;
pub(crate) use nth::Nth;
pub(crate) use open::Open;
pub(crate) use parse::Parse;
pub(crate) use pivot::Pivot;
pub(crate) use prepend::Prepend;
pub(crate) use prev::Previous;

140
crates/nu-cli/src/commands/help.rs
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@ -182,8 +182,8 @@ pub fn get_help(cmd: &dyn WholeStreamCommand, registry: &CommandRegistry) -> Str
if !signature.positional.is_empty() || signature.rest_positional.is_some() {
long_desc.push_str("\nParameters:\n");
for positional in signature.positional {
match positional.0 {
for positional in &signature.positional {
match &positional.0 {
PositionalType::Mandatory(name, _m) => {
long_desc.push_str(&format!(" <{}> {}\n", name, positional.1));
}
@ -193,75 +193,12 @@ pub fn get_help(cmd: &dyn WholeStreamCommand, registry: &CommandRegistry) -> Str
}
}
if let Some(rest_positional) = signature.rest_positional {
if let Some(rest_positional) = &signature.rest_positional {
long_desc.push_str(&format!(" ...args: {}\n", rest_positional.1));
}
}
if !signature.named.is_empty() {
long_desc.push_str("\nFlags:\n");
for (flag, ty) in signature.named {
let msg = match ty.0 {
NamedType::Switch(s) => {
if let Some(c) = s {
format!(
" -{}, --{}{} {}\n",
c,
flag,
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
} else {
format!(
" --{}{} {}\n",
flag,
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
}
}
NamedType::Mandatory(s, m) => {
if let Some(c) = s {
format!(
" -{}, --{} <{}> (required parameter){} {}\n",
c,
flag,
m.display(),
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
} else {
format!(
" --{} <{}> (required parameter){} {}\n",
flag,
m.display(),
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
}
}
NamedType::Optional(s, o) => {
if let Some(c) = s {
format!(
" -{}, --{} <{}>{} {}\n",
c,
flag,
o.display(),
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
} else {
format!(
" --{} <{}>{} {}\n",
flag,
o.display(),
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
}
}
};
long_desc.push_str(&msg);
}
long_desc.push_str(&get_flags_section(&signature))
}
let palette = crate::shell::palette::DefaultPalette {};
@ -283,6 +220,75 @@ pub fn get_help(cmd: &dyn WholeStreamCommand, registry: &CommandRegistry) -> Str
long_desc
}
fn get_flags_section(signature: &Signature) -> String {
let mut long_desc = String::new();
long_desc.push_str("\nFlags:\n");
for (flag, ty) in &signature.named {
let msg = match ty.0 {
NamedType::Switch(s) => {
if let Some(c) = s {
format!(
" -{}, --{}{} {}\n",
c,
flag,
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
} else {
format!(
" --{}{} {}\n",
flag,
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
}
}
NamedType::Mandatory(s, m) => {
if let Some(c) = s {
format!(
" -{}, --{} <{}> (required parameter){} {}\n",
c,
flag,
m.display(),
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
} else {
format!(
" --{} <{}> (required parameter){} {}\n",
flag,
m.display(),
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
}
}
NamedType::Optional(s, o) => {
if let Some(c) = s {
format!(
" -{}, --{} <{}>{} {}\n",
c,
flag,
o.display(),
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
} else {
format!(
" --{} <{}>{} {}\n",
flag,
o.display(),
if !ty.1.is_empty() { ":" } else { "" },
ty.1
)
}
}
};
long_desc.push_str(&msg);
}
long_desc
}
#[cfg(test)]
mod tests {
use super::Help;

19
crates/nu-cli/src/commands/mkdir.rs
View File

@ -32,7 +32,7 @@ impl WholeStreamCommand for Mkdir {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
mkdir(args, registry)
mkdir(args, registry).await
}
fn examples(&self) -> Vec<Example> {
@ -44,20 +44,13 @@ impl WholeStreamCommand for Mkdir {
}
}
fn mkdir(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
async fn mkdir(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let stream = async_stream! {
let name = args.call_info.name_tag.clone();
let shell_manager = args.shell_manager.clone();
let (args, _) = args.process(&registry).await?;
let mut result = shell_manager.mkdir(args, name)?;
let name = args.call_info.name_tag.clone();
let shell_manager = args.shell_manager.clone();
let (args, _) = args.process(&registry).await?;
while let Some(item) = result.next().await {
yield item;
}
};
Ok(stream.to_output_stream())
shell_manager.mkdir(args, name)
}
#[cfg(test)]

175
crates/nu-cli/src/commands/parse/command.rs Normal file
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@ -0,0 +1,175 @@
use crate::commands::WholeStreamCommand;
use crate::prelude::*;
use nu_errors::ShellError;
use nu_protocol::{Signature, SyntaxShape, TaggedDictBuilder, UntaggedValue, Value};
use nu_source::Tagged;
use regex::Regex;
#[derive(Deserialize)]
struct Arguments {
pattern: Tagged<String>,
regex: Tagged<bool>,
}
pub struct Command;
#[async_trait]
impl WholeStreamCommand for Command {
fn name(&self) -> &str {
"parse"
}
fn signature(&self) -> Signature {
Signature::build("parse")
.required(
"pattern",
SyntaxShape::String,
"the pattern to match. Eg) \"{foo}: {bar}\"",
)
.switch("regex", "use full regex syntax for patterns", Some('r'))
}
fn usage(&self) -> &str {
"Parse columns from string data using a simple pattern."
}
async fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
operate(args, registry).await
}
}
pub async fn operate(
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let name_tag = args.call_info.name_tag.clone();
let (Arguments { regex, pattern }, mut input) = args.process(&registry).await?;
let regex_pattern = if let Tagged { item: true, tag } = regex {
Regex::new(&pattern.item)
.map_err(|_| ShellError::labeled_error("Invalid regex", "invalid regex", tag.span))?
} else {
let parse_regex = build_regex(&pattern.item, name_tag.clone())?;
Regex::new(&parse_regex).map_err(|_| {
ShellError::labeled_error("Invalid pattern", "invalid pattern", name_tag.span)
})?
};
let columns = column_names(&regex_pattern);
let mut parsed: VecDeque<Value> = VecDeque::new();
while let Some(v) = input.next().await {
match v.as_string() {
Ok(s) => {
let results = regex_pattern.captures_iter(&s);
for c in results {
let mut dict = TaggedDictBuilder::new(&v.tag);
for (column_name, cap) in columns.iter().zip(c.iter().skip(1)) {
let cap_string = cap.map(|v| v.as_str()).unwrap_or("").to_string();
dict.insert_untagged(column_name, UntaggedValue::string(cap_string));
}
parsed.push_back(dict.into_value());
}
}
Err(_) => {
return Err(ShellError::labeled_error_with_secondary(
"Expected string input",
"expected string input",
&name_tag,
"value originated here",
v.tag,
))
}
}
}
Ok(futures::stream::iter(parsed).to_output_stream())
}
fn build_regex(input: &str, tag: Tag) -> Result<String, ShellError> {
let mut output = "(?s)\\A".to_string();
//let mut loop_input = input;
let mut loop_input = input.chars().peekable();
loop {
let mut before = String::new();
while let Some(c) = loop_input.next() {
if c == '{' {
// If '{{', still creating a plaintext parse command, but just for a single '{' char
if loop_input.peek() == Some(&'{') {
let _ = loop_input.next();
} else {
break;
}
}
before.push(c);
}
if !before.is_empty() {
output.push_str(&regex::escape(&before));
}
// Look for column as we're now at one
let mut column = String::new();
while let Some(c) = loop_input.next() {
if c == '}' {
break;
}
column.push(c);
if loop_input.peek().is_none() {
return Err(ShellError::labeled_error(
"Found opening `{` without an associated closing `}`",
"invalid parse pattern",
tag,
));
}
}
if !column.is_empty() {
output.push_str("(?P<");
output.push_str(&column);
output.push_str(">.*?)");
}
if before.is_empty() && column.is_empty() {
break;
}
}
output.push_str("\\z");
Ok(output)
}
fn column_names(regex: &Regex) -> Vec<String> {
regex
.capture_names()
.enumerate()
.skip(1)
.map(|(i, name)| {
name.map(String::from)
.unwrap_or_else(|| format!("Capture{}", i))
})
.collect()
}
#[cfg(test)]
mod tests {
use super::Command;
#[test]
fn examples_work_as_expected() {
use crate::examples::test as test_examples;
test_examples(Command {})
}
}

3
crates/nu-cli/src/commands/parse/mod.rs Normal file
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@ -0,0 +1,3 @@
mod command;
pub use command::Command as Parse;

34
crates/nu-cli/src/commands/rm.rs
View File

@ -49,7 +49,7 @@ impl WholeStreamCommand for Remove {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
rm(args, registry)
rm(args, registry).await
}
fn examples(&self) -> Vec<Example> {
@ -73,27 +73,21 @@ impl WholeStreamCommand for Remove {
}
}
fn rm(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
async fn rm(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let stream = async_stream! {
let name = args.call_info.name_tag.clone();
let shell_manager = args.shell_manager.clone();
let (args, _): (RemoveArgs, _) = args.process(&registry).await?;
let mut result = if args.trash.item && args.permanent.item {
OutputStream::one(Err(ShellError::labeled_error(
"only one of --permanent and --trash can be used",
"conflicting flags",
name
)))
} else {
shell_manager.rm(args, name)?
};
while let Some(item) = result.next().await {
yield item;
}
};
let name = args.call_info.name_tag.clone();
let shell_manager = args.shell_manager.clone();
let (args, _): (RemoveArgs, _) = args.process(&registry).await?;
Ok(stream.to_output_stream())
if args.trash.item && args.permanent.item {
return Ok(OutputStream::one(Err(ShellError::labeled_error(
"only one of --permanent and --trash can be used",
"conflicting flags",
name,
))));
}
shell_manager.rm(args, name)
}
#[cfg(test)]

84
crates/nu-cli/src/commands/sort_by.rs
View File

@ -31,7 +31,7 @@ impl WholeStreamCommand for SortBy {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
sort_by(args, registry)
sort_by(args, registry).await
}
fn examples(&self) -> Vec<Example> {
@ -60,51 +60,59 @@ impl WholeStreamCommand for SortBy {
}
}
fn sort_by(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
async fn sort_by(
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let stream = async_stream! {
let (SortByArgs { rest }, mut input) = args.process(&registry).await?;
let mut vec = input.drain_vec().await;
let tag = args.call_info.name_tag.clone();
if vec.is_empty() {
return;
let (SortByArgs { rest }, mut input) = args.process(&registry).await?;
let mut vec = input.drain_vec().await;
if vec.is_empty() {
return Err(ShellError::labeled_error(
"Error performing sort-by command",
"sort-by error",
tag,
));
}
for sort_arg in rest.iter() {
let match_test = get_data_by_key(&vec[0], sort_arg.borrow_spanned());
if match_test == None {
return Err(ShellError::labeled_error(
"Can not find column to sort by",
"invalid column",
sort_arg.borrow_spanned().span,
));
}
}
for sort_arg in rest.iter() {
let match_test = get_data_by_key(&vec[0], sort_arg.borrow_spanned());
if match_test == None {
yield Err(ShellError::labeled_error(
"Can not find column to sort by",
"invalid column",
sort_arg.borrow_spanned().span,
));
return;
}
match &vec[0] {
Value {
value: UntaggedValue::Primitive(_),
..
} => {
vec.sort();
}
match &vec[0] {
Value {
value: UntaggedValue::Primitive(_),
..
} => {
vec.sort();
},
_ => {
let calc_key = |item: &Value| {
rest.iter()
.map(|f| get_data_by_key(item, f.borrow_spanned()))
.collect::<Vec<Option<Value>>>()
};
vec.sort_by_cached_key(calc_key);
},
};
for item in vec {
yield item.into();
_ => {
let calc_key = |item: &Value| {
rest.iter()
.map(|f| get_data_by_key(item, f.borrow_spanned()))
.collect::<Vec<Option<Value>>>()
};
vec.sort_by_cached_key(calc_key);
}
};
Ok(stream.to_output_stream())
let mut values_vec_deque: VecDeque<Value> = VecDeque::new();
for item in vec {
values_vec_deque.push_back(item);
}
Ok(futures::stream::iter(values_vec_deque).to_output_stream())
}
#[cfg(test)]

41
crates/nu-cli/src/commands/split_by.rs
View File

@ -2,7 +2,7 @@ use crate::commands::WholeStreamCommand;
use crate::prelude::*;
use nu_errors::ShellError;
use nu_protocol::{
ReturnSuccess, Signature, SpannedTypeName, SyntaxShape, TaggedDictBuilder, UntaggedValue, Value,
Signature, SpannedTypeName, SyntaxShape, TaggedDictBuilder, UntaggedValue, Value,
};
use nu_source::Tagged;
@ -36,32 +36,31 @@ impl WholeStreamCommand for SplitBy {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
split_by(args, registry)
split_by(args, registry).await
}
}
pub fn split_by(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
pub async fn split_by(
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let stream = async_stream! {
let name = args.call_info.name_tag.clone();
let (SplitByArgs { column_name }, mut input) = args.process(&registry).await?;
let values: Vec<Value> = input.collect().await;
let name = args.call_info.name_tag.clone();
let (SplitByArgs { column_name }, input) = args.process(&registry).await?;
let values: Vec<Value> = input.collect().await;
if values.len() > 1 || values.is_empty() {
yield Err(ShellError::labeled_error(
"Expected table from pipeline",
"requires a table input",
column_name.span()
))
} else {
match split(&column_name, &values[0], name) {
Ok(split) => yield ReturnSuccess::value(split),
Err(err) => yield Err(err),
}
}
};
if values.len() > 1 || values.is_empty() {
return Err(ShellError::labeled_error(
"Expected table from pipeline",
"requires a table input",
column_name.span(),
));
}
Ok(stream.to_output_stream())
match split(&column_name, &values[0], name) {
Ok(split) => Ok(OutputStream::one(split)),
Err(err) => Err(err),
}
}
pub fn split(

23
crates/nu-cli/src/commands/uniq.rs
View File

@ -26,21 +26,24 @@ impl WholeStreamCommand for Uniq {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
uniq(args, registry)
uniq(args, registry).await
}
}
fn uniq(args: CommandArgs, _registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
let stream = async_stream! {
let mut input = args.input;
let uniq_values: IndexSet<_> = input.collect().await;
async fn uniq(args: CommandArgs, _registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
let input = args.input;
let uniq_values: IndexSet<_> = input.collect().await;
for item in uniq_values.iter().map(|row| ReturnSuccess::value(row.clone())) {
yield item;
}
};
let mut values_vec_deque = VecDeque::new();
Ok(stream.to_output_stream())
for item in uniq_values
.iter()
.map(|row| ReturnSuccess::value(row.clone()))
{
values_vec_deque.push_back(item);
}
Ok(futures::stream::iter(values_vec_deque).to_output_stream())
}
#[cfg(test)]

21
crates/nu_plugin_parse/Cargo.toml
View File

@ -1,21 +0,0 @@
[package]
name = "nu_plugin_parse"
version = "0.14.1"
authors = ["The Nu Project Contributors"]
edition = "2018"
description = "A string parsing plugin for Nushell"
license = "MIT"
[lib]
doctest = false
[dependencies]
nu-plugin = { path = "../nu-plugin", version = "0.14.1" }
nu-protocol = { path = "../nu-protocol", version = "0.14.1" }
nu-source = { path = "../nu-source", version = "0.14.1" }
nu-errors = { path = "../nu-errors", version = "0.14.1" }
futures = { version = "0.3", features = ["compat", "io-compat"] }
regex = "1"
[build-dependencies]
nu-build = { version = "0.14.1", path = "../nu-build" }

3
crates/nu_plugin_parse/build.rs
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@ -1,3 +0,0 @@
fn main() -> Result<(), Box<dyn std::error::Error>> {
nu_build::build()
}

4
crates/nu_plugin_parse/src/lib.rs
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@ -1,4 +0,0 @@
mod nu;
mod parse;
pub use parse::Parse;

7
crates/nu_plugin_parse/src/main.rs
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@ -1,7 +0,0 @@
use nu_plugin::serve_plugin;
use nu_plugin_parse::Parse;
fn main() -> Result<(), Box<dyn std::error::Error>> {
serve_plugin(&mut Parse::new()?);
Ok(())
}

159
crates/nu_plugin_parse/src/nu/mod.rs
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@ -1,159 +0,0 @@
use regex::{self, Regex};
use nu_errors::ShellError;
use nu_plugin::Plugin;
use nu_protocol::{
CallInfo, Primitive, ReturnSuccess, ReturnValue, ShellTypeName, Signature, SyntaxShape,
TaggedDictBuilder, UntaggedValue, Value,
};
use nu_source::Tag;
use crate::Parse;
impl Plugin for Parse {
fn config(&mut self) -> Result<Signature, ShellError> {
Ok(Signature::build("parse")
.switch("regex", "use full regex syntax for patterns", Some('r'))
.required(
"pattern",
SyntaxShape::String,
"the pattern to match. Eg) \"{foo}: {bar}\"",
)
.filter())
}
fn begin_filter(&mut self, call_info: CallInfo) -> Result<Vec<ReturnValue>, ShellError> {
if let Some(ref args) = call_info.args.positional {
let value = &args[0];
match value {
Value {
value: UntaggedValue::Primitive(Primitive::String(s)),
tag,
} => {
self.pattern_tag = tag.clone();
self.regex = if call_info.args.has("regex") {
Regex::new(&s).map_err(|_| {
ShellError::labeled_error("Invalid regex", "invalid regex", tag.span)
})?
} else {
let parse_regex = build_regex(&s, tag.clone())?;
Regex::new(&parse_regex).map_err(|_| {
ShellError::labeled_error(
"Invalid pattern",
"invalid pattern",
tag.span,
)
})?
};
self.column_names = column_names(&self.regex);
}
Value { tag, .. } => {
return Err(ShellError::labeled_error(
format!(
"Unexpected type in params (found `{}`, expected `String`)",
value.type_name()
),
"unexpected type",
tag,
));
}
}
}
Ok(vec![])
}
fn filter(&mut self, input: Value) -> Result<Vec<ReturnValue>, ShellError> {
if let Ok(s) = input.as_string() {
Ok(self
.regex
.captures_iter(&s)
.map(|caps| {
let mut dict = TaggedDictBuilder::new(&input.tag);
for (column_name, cap) in self.column_names.iter().zip(caps.iter().skip(1)) {
let cap_string = cap.map(|v| v.as_str()).unwrap_or("").to_string();
dict.insert_untagged(column_name, UntaggedValue::string(cap_string));
}
Ok(ReturnSuccess::Value(dict.into_value()))
})
.collect())
} else {
Err(ShellError::labeled_error_with_secondary(
"Expected string input",
"expected string input",
&self.name,
"value originated here",
input.tag,
))
}
}
}
fn build_regex(input: &str, tag: Tag) -> Result<String, ShellError> {
let mut output = "(?s)\\A".to_string();
//let mut loop_input = input;
let mut loop_input = input.chars().peekable();
loop {
let mut before = String::new();
while let Some(c) = loop_input.next() {
if c == '{' {
// If '{{', still creating a plaintext parse command, but just for a single '{' char
if loop_input.peek() == Some(&'{') {
let _ = loop_input.next();
} else {
break;
}
}
before.push(c);
}
if !before.is_empty() {
output.push_str(&regex::escape(&before));
}
// Look for column as we're now at one
let mut column = String::new();
while let Some(c) = loop_input.next() {
if c == '}' {
break;
}
column.push(c);
if loop_input.peek().is_none() {
return Err(ShellError::labeled_error(
"Found opening `{` without an associated closing `}`",
"invalid parse pattern",
tag,
));
}
}
if !column.is_empty() {
output.push_str("(?P<");
output.push_str(&column);
output.push_str(">.*?)");
}
if before.is_empty() && column.is_empty() {
break;
}
}
output.push_str("\\z");
Ok(output)
}
fn column_names(regex: &Regex) -> Vec<String> {
regex
.capture_names()
.enumerate()
.skip(1)
.map(|(i, name)| {
name.map(String::from)
.unwrap_or_else(|| format!("Capture{}", i))
})
.collect()
}

21
crates/nu_plugin_parse/src/parse.rs
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@ -1,21 +0,0 @@
use nu_source::Tag;
use regex::Regex;
pub struct Parse {
pub regex: Regex,
pub name: Tag,
pub pattern_tag: Tag,
pub column_names: Vec<String>,
}
impl Parse {
#[allow(clippy::trivial_regex)]
pub fn new() -> Result<Self, Box<dyn std::error::Error>> {
Ok(Parse {
regex: Regex::new("")?,
name: Tag::unknown(),
pattern_tag: Tag::unknown(),
column_names: vec![],
})
}
}