Refactor writer packages (#517)

src/cheatsh.rs

@@ -1,7 +1,6 @@
 use crate::parser;
 use crate::structures::cheat::VariableMap;
 use crate::structures::fetcher;
-use crate::writer::Writer;
 use anyhow::Context;
 use anyhow::Result;
 use std::collections::HashSet;
@@ -23,12 +22,7 @@ fn lines(query: &str, markdown: &str) -> impl Iterator<Item = Result<String>> {
     .into_iter()
 }
 
-fn read_all(
-    query: &str,
-    cheat: &str,
-    stdin: &mut std::process::ChildStdin,
-    writer: &mut dyn Writer,
-) -> Result<Option<VariableMap>> {
+fn read_all(query: &str, cheat: &str, stdin: &mut std::process::ChildStdin) -> Result<Option<VariableMap>> {
     let mut variables = VariableMap::new();
     let mut visited_lines = HashSet::new();
 
@@ -50,7 +44,6 @@ Output:
         0,
         &mut variables,
         &mut visited_lines,
-        writer,
         stdin,
         None,
         None,
@@ -119,10 +112,9 @@ impl fetcher::Fetcher for Fetcher {
     fn fetch(
         &self,
         stdin: &mut std::process::ChildStdin,
-        writer: &mut dyn Writer,
         _files: &mut Vec<String>,
     ) -> Result<Option<VariableMap>> {
         let cheat = fetch(&self.query)?;
-        read_all(&self.query, &cheat, stdin, writer)
+        read_all(&self.query, &cheat, stdin)
     }
 }

src/filesystem.rs

@@ -4,7 +4,6 @@ pub use crate::fs::{
 use crate::parser;
 use crate::structures::cheat::VariableMap;
 use crate::structures::fetcher;
-use crate::writer::Writer;
 use anyhow::Result;
 use directories_next::BaseDirs;
 use std::collections::HashSet;
@@ -103,7 +102,6 @@ impl fetcher::Fetcher for Fetcher {
     fn fetch(
         &self,
         stdin: &mut std::process::ChildStdin,
-        writer: &mut dyn Writer,
         files: &mut Vec<String>,
     ) -> Result<Option<VariableMap>> {
         let mut variables = VariableMap::new();
@@ -133,7 +131,6 @@ impl fetcher::Fetcher for Fetcher {
                         index,
                         &mut variables,
                         &mut visited_lines,
-                        writer,
                         stdin,
                         self.allowlist.as_ref(),
                         self.denylist.as_ref(),

src/cmds/core.rs → src/handler/core.rs

@@ -1,18 +1,13 @@
 use crate::actor;
 use crate::cheatsh;
-
-use crate::writer;
-
 use crate::extractor;
 use crate::filesystem;
 use crate::finder::structures::{Opts as FinderOpts, SuggestionType};
 use crate::finder::Finder;
-use crate::structures::fetcher::Fetcher;
-
 use crate::structures::cheat::VariableMap;
-
 use crate::structures::config::Config;
 use crate::structures::config::Source;
+use crate::structures::fetcher::Fetcher;
 use crate::tldr;
 use crate::welcome;
 use anyhow::Context;
@@ -45,22 +40,20 @@ pub fn main(config: Config) -> Result<()> {
     let (raw_selection, variables, files) = config
         .finder
         .call(opts, |stdin, files| {
-            let mut writer = writer::terminal::Writer::new();
-
             let fetcher: Box<dyn Fetcher> = match config.source() {
                 Source::Cheats(query) => Box::new(cheatsh::Fetcher::new(query)),
                 Source::Tldr(query) => Box::new(tldr::Fetcher::new(query)),
                 Source::Filesystem(path, rules) => Box::new(filesystem::Fetcher::new(path, rules)),
             };
 
             let res = fetcher
-                .fetch(stdin, &mut writer, files)
+                .fetch(stdin, files)
                 .context("Failed to parse variables intended for finder")?;
 
             if let Some(variables) = res {
                 Ok(Some(variables))
             } else {
-                welcome::populate_cheatsheet(&mut writer, stdin);
+                welcome::populate_cheatsheet(stdin);
                 Ok(Some(VariableMap::new()))
             }
         })

src/handler/mod.rs

@@ -0,0 +1,50 @@
+pub mod core;
+pub mod func;
+pub mod info;
+pub mod preview;
+pub mod preview_var;
+pub mod repo;
+pub mod shell;
+
+use crate::handler;
+use crate::structures::config::Command::{Fn, Info, Preview, PreviewVar, Repo, Widget};
+use crate::structures::config::{Config, RepoCommand};
+use anyhow::Context;
+use anyhow::Result;
+
+pub fn handle_config(config: Config) -> Result<()> {
+    match config.cmd.as_ref() {
+        None => handler::core::main(config),
+
+        Some(c) => match c {
+            Preview { line } => handler::preview::main(&line),
+
+            PreviewVar {
+                selection,
+                query,
+                variable,
+            } => handler::preview_var::main(&selection, &query, &variable),
+
+            Widget { shell } => handler::shell::main(shell).context("Failed to print shell widget code"),
+
+            Fn { func, args } => handler::func::main(func, args.to_vec())
+                .with_context(|| format!("Failed to execute function `{:#?}`", func)),
+
+            Info { info } => {
+                handler::info::main(info).with_context(|| format!("Failed to fetch info `{:#?}`", info))
+            }
+
+            Repo { cmd } => match cmd {
+                RepoCommand::Add { uri } => {
+                    handler::repo::add(uri.clone(), &config.finder)
+                        .with_context(|| format!("Failed to import cheatsheets from `{}`", uri))?;
+                    handler::core::main(config)
+                }
+                RepoCommand::Browse => {
+                    handler::repo::browse(&config.finder).context("Failed to browse featured cheatsheets")?;
+                    handler::core::main(config)
+                }
+            },
+        },
+    }
+}

src/cmds/preview.rs → src/handler/preview.rs

@@ -1,7 +1,6 @@
+use crate::ui;
 use crate::writer;
-
 use anyhow::Result;
-
 use std::process;
 
 fn extract_elements(argstr: &str) -> (&str, &str, &str) {
@@ -14,11 +13,13 @@ fn extract_elements(argstr: &str) -> (&str, &str, &str) {
 
 pub fn main(line: &str) -> Result<()> {
     let (tags, comment, snippet) = extract_elements(line);
-    writer::terminal::preview(comment, tags, snippet);
-    process::exit(0)
-}
 
-pub fn main_var(selection: &str, query: &str, variable: &str) -> Result<()> {
-    writer::terminal::preview_var(selection, query, variable);
+    println!(
+        "{comment} {tags} \n{snippet}",
+        comment = ui::style(comment).with(*ui::COMMENT_COLOR),
+        tags = ui::style(format!("[{}]", tags)).with(*ui::TAG_COLOR),
+        snippet = ui::style(writer::fix_newlines(snippet)).with(*ui::SNIPPET_COLOR),
+    );
+
     process::exit(0)
 }

src/handler/preview_var.rs

@@ -0,0 +1,92 @@
+use crate::env_var;
+use crate::finder;
+
+use crate::terminal::style::style;
+use crate::ui;
+use crate::writer;
+use anyhow::Result;
+
+use std::collections::HashSet;
+use std::iter;
+use std::process;
+
+pub fn main(selection: &str, query: &str, variable: &str) -> Result<()> {
+    let snippet = env_var::must_get(env_var::PREVIEW_INITIAL_SNIPPET);
+    let tags = env_var::must_get(env_var::PREVIEW_TAGS);
+    let comment = env_var::must_get(env_var::PREVIEW_COMMENT);
+    let column = env_var::parse(env_var::PREVIEW_COLUMN);
+    let delimiter = env_var::get(env_var::PREVIEW_DELIMITER).ok();
+    let map = env_var::get(env_var::PREVIEW_MAP).ok();
+
+    let active_color = *ui::TAG_COLOR;
+    let inactive_color = *ui::COMMENT_COLOR;
+
+    let mut colored_snippet = String::from(&snippet);
+    let mut visited_vars: HashSet<&str> = HashSet::new();
+
+    let mut variables = String::from("");
+
+    println!(
+        "{comment} {tags}",
+        comment = style(comment).with(*ui::COMMENT_COLOR),
+        tags = style(format!("[{}]", tags)).with(*ui::TAG_COLOR),
+    );
+
+    let bracketed_current_variable = format!("<{}>", variable);
+
+    let bracketed_variables: Vec<&str> = {
+        if snippet.contains(&bracketed_current_variable) {
+            writer::VAR_REGEX
+                .find_iter(&snippet)
+                .map(|m| m.as_str())
+                .collect()
+        } else {
+            iter::once(&bracketed_current_variable)
+                .map(|s| s.as_str())
+                .collect()
+        }
+    };
+
+    for bracketed_variable_name in bracketed_variables {
+        let variable_name = &bracketed_variable_name[1..bracketed_variable_name.len() - 1];
+
+        if visited_vars.contains(variable_name) {
+            continue;
+        } else {
+            visited_vars.insert(variable_name);
+        }
+
+        let is_current = variable_name == variable;
+        let variable_color = if is_current { active_color } else { inactive_color };
+        let env_variable_name = env_var::escape(variable_name);
+
+        let value = if is_current {
+            let v = selection.trim_matches('\'');
+            if v.is_empty() { query.trim_matches('\'') } else { v }.to_string()
+        } else if let Ok(v) = env_var::get(&env_variable_name) {
+            v
+        } else {
+            "".to_string()
+        };
+
+        let replacement = format!(
+            "{variable}",
+            variable = style(bracketed_variable_name).with(variable_color),
+        );
+
+        colored_snippet = colored_snippet.replace(bracketed_variable_name, &replacement);
+
+        variables = format!(
+            "{variables}\n{variable} = {value}",
+            variables = variables,
+            variable = style(variable_name).with(variable_color),
+            value = finder::process(value, column, delimiter.as_deref(), map.clone())
+                .expect("Unable to process value"),
+        );
+    }
+
+    println!("{snippet}", snippet = writer::fix_newlines(&colored_snippet));
+    println!("{variables}", variables = variables);
+
+    process::exit(0)
+}

src/lib.rs

@@ -6,7 +6,6 @@ extern crate anyhow;
 mod actor;
 mod cheatsh;
 mod clipboard;
-mod cmds;
 mod env_var;
 mod extractor;
 mod filesystem;
@@ -20,6 +19,7 @@ mod shell;
 mod structures;
 mod terminal;
 mod tldr;
+mod ui;
 mod url;
 mod welcome;
 mod writer;