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use crate::display;
use crate::filesystem;
use crate::flows;
use crate::fzf;
use crate::handler;
use crate::parser;
use crate::structures::cheat::{Suggestion, VariableMap};
use crate::structures::fzf::{Opts as FzfOpts, SuggestionType};
use crate::structures::option;
use crate::structures::option::Config;
use regex::Regex;
use std::collections::HashMap;
use std::error::Error;
use std::fs;
use std::io::Write;
use std::process::{Command, Stdio};
pub enum Variant {
Core,
Filter(String),
Query(String),
}
fn gen_core_fzf_opts(variant: Variant, config: &Config) -> FzfOpts {
let mut opts = FzfOpts {
preview: if config.no_preview {
None
} else {
Some(format!("{} preview {{}}", filesystem::exe_string()))
},
autoselect: !config.no_autoselect,
overrides: config.fzf_overrides.clone(),
suggestion_type: SuggestionType::SnippetSelection,
..Default::default()
};
match variant {
Variant::Core => (),
Variant::Filter(f) => opts.filter = Some(f),
Variant::Query(q) => opts.query = Some(q),
}
opts
}
fn extract_from_selections(raw_snippet: &str, contains_key: bool) -> (&str, &str, &str) {
let mut lines = raw_snippet.split('\n');
let key = if contains_key {
lines.next().unwrap()
} else {
"enter"
};
let mut parts = lines.next().unwrap().split(display::DELIMITER);
parts.next();
parts.next();
parts.next();
let tags = parts.next().unwrap_or("");
parts.next();
let snippet = parts.next().unwrap_or("");
(key, tags, snippet)
}
fn prompt_with_suggestions(
varname: &str,
config: &Config,
suggestion: &Suggestion,
values: &HashMap<String, String>,
) -> String {
let mut vars_cmd = String::from("");
for (key, value) in values.iter() {
vars_cmd.push_str(format!("{}=\"{}\"; ", key, value).as_str());
}
let (suggestion_command, suggestion_opts) = suggestion;
let command = format!("{} {}", vars_cmd, suggestion_command);
let child = Command::new("bash")
.stdout(Stdio::piped())
.arg("-c")
.arg(command)
.spawn()
.unwrap();
let suggestions = String::from_utf8(child.wait_with_output().unwrap().stdout).unwrap();
let opts = suggestion_opts.clone().unwrap_or_default();
let opts = FzfOpts {
autoselect: !config.no_autoselect,
overrides: config.fzf_overrides_var.clone(),
prompt: Some(display::variable_prompt(varname)),
..opts
};
let (output, _) = fzf::call(opts, |stdin| {
stdin.write_all(suggestions.as_bytes()).unwrap();
None
});
output
}
fn prompt_without_suggestions(variable_name: &str) -> String {
let opts = FzfOpts {
autoselect: false,
prompt: Some(display::variable_prompt(variable_name)),
suggestion_type: SuggestionType::Disabled,
..Default::default()
};
let (output, _) = fzf::call(opts, |_stdin| None);
output
}
fn replace_variables_from_snippet(
snippet: &str,
tags: &str,
variables: VariableMap,
config: &Config,
) -> String {
let mut interpolated_snippet = String::from(snippet);
let mut values: HashMap<String, String> = HashMap::new();
let re = Regex::new(r"<(\w[\w\d\-_]*)>").unwrap();
for captures in re.captures_iter(snippet) {
let bracketed_variable_name = &captures[0];
let variable_name = &bracketed_variable_name[1..bracketed_variable_name.len() - 1];
let value = values
.get(variable_name)
.map(|s| s.to_string())
.unwrap_or_else(|| {
variables
.get(&tags, &variable_name)
.map(|suggestion| {
prompt_with_suggestions(variable_name, &config, suggestion, &values)
})
.unwrap_or_else(|| prompt_without_suggestions(variable_name))
});
values.insert(variable_name.to_string(), value.clone());
interpolated_snippet =
interpolated_snippet.replacen(bracketed_variable_name, value.as_str(), 1);
}
interpolated_snippet
}
fn with_new_lines(txt: String) -> String {
txt.replace(display::LINE_SEPARATOR, "\n")
}
pub fn main(variant: Variant, config: Config, contains_key: bool) -> Result<(), Box<dyn Error>> {
let _ = display::WIDTHS;
let opts = gen_core_fzf_opts(variant, &config);
let (raw_selection, variables) =
fzf::call(opts, |stdin| Some(parser::read_all(&config, stdin)));
let (key, tags, snippet) = extract_from_selections(&raw_selection[..], contains_key);
let interpolated_snippet = with_new_lines(replace_variables_from_snippet(
snippet,
tags,
variables.unwrap(),
&config,
));
// copy to clipboard
if key == "ctrl-y" {
flows::aux::abort("copying snippets to the clipboard", 201)?
// print to stdout
} else if config.print {
println!("{}", interpolated_snippet);
// save to file
} else if let Some(s) = config.save {
fs::write(s, interpolated_snippet)?;
// call navi (this prevents "failed to read /dev/tty" from fzf)
} else if interpolated_snippet.starts_with("navi") {
let new_config = option::config_from_iter(interpolated_snippet.split(' ').collect());
handler::handle_config(new_config)?;
// shell out and execute snippet
} else {
Command::new("bash")
.arg("-c")
.arg(&interpolated_snippet[..])
.spawn()?;
}
Ok(())
}
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