diff options
author | Matan Kushner <hello@matchai.me> | 2019-04-08 23:35:14 -0400 |
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committer | Matan Kushner <hello@matchai.me> | 2019-04-08 23:35:14 -0400 |
commit | 969840a15709b1ede088fdfc54aa53f032993c45 (patch) | |
tree | 50c8434b1dc17d8572aa4c44ef67bbf49e9b29ef /src | |
parent | d58ea0659b3f0c4a62c1165a597d72757b99d088 (diff) |
Tidy up dir section
Diffstat (limited to 'src')
-rw-r--r-- | src/main.rs | 1 | ||||
-rw-r--r-- | src/modules/directory.rs | 80 |
2 files changed, 40 insertions, 41 deletions
diff --git a/src/main.rs b/src/main.rs index 9eb013935..b8f11cfc9 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,5 +1,6 @@ #[macro_use] extern crate clap; + extern crate ansi_term; extern crate dirs; extern crate git2; diff --git a/src/modules/directory.rs b/src/modules/directory.rs index 9b5b81959..edbdc1f6a 100644 --- a/src/modules/directory.rs +++ b/src/modules/directory.rs @@ -1,12 +1,20 @@ use super::Segment; +use std::env; +use std::path::PathBuf; use ansi_term::{Color, Style}; use clap::ArgMatches; use dirs; use git2::Repository; -use std::env; -use std::path::PathBuf; /// Creates a segment with the current directory +/// +/// Will perform path contraction and truncation. +/// **Contraction** +/// - Paths begining with the home directory will be contracted to `~` +/// - Paths containing a git repo will contract to begin at the repo root +/// +/// **Truncation** +/// Paths will be limited in length to `3` path components by default. pub fn segment(_: &ArgMatches) -> Segment { const COLOR_DIR: Color = Color::Cyan; const DIR_TRUNCATION_LENGTH: usize = 3; @@ -19,9 +27,9 @@ pub fn segment(_: &ArgMatches) -> Segment { let dir_string; if let Ok(repo) = git2::Repository::discover(¤t_path) { + // Contract the path to the git repo root let repo_root = get_repo_root(repo); - // The folder name is the last component to the repo path let repo_folder_name = repo_root .components() .last() @@ -30,25 +38,18 @@ pub fn segment(_: &ArgMatches) -> Segment { .to_str() .unwrap(); - dir_string = truncate_path( - &DIR_TRUNCATION_LENGTH, - ¤t_path, - &repo_root, - &repo_folder_name, - ); + dir_string = contract_path(¤t_path, &repo_root, &repo_folder_name); } else { + // Contract the path to the home directory let home_dir = dirs::home_dir().unwrap(); - - dir_string = truncate_path( - &DIR_TRUNCATION_LENGTH, - ¤t_path, - &home_dir, - HOME_SYMBOL, - ); + dir_string = contract_path(¤t_path, &home_dir, HOME_SYMBOL); } + // Truncate the dir string to the maximum number of path components + let truncated_dir_string = truncate(dir_string, DIR_TRUNCATION_LENGTH); + Segment { - value: dir_string, + value: truncated_dir_string, style: Style::from(COLOR_DIR).bold(), ..Default::default() } @@ -65,36 +66,18 @@ fn get_repo_root(repo: Repository) -> PathBuf { } } -/// Truncate a path to a predefined number of path components -/// -/// Trim the path in the prompt to only have the last few paths, set by `length`. -/// This function also serves to replace the top-level path of the prompt. -/// This can be used to replace the path to a git repo with only the repo -/// directory name. -fn truncate_path( - length: &usize, - full_path: &PathBuf, - top_level_path: &PathBuf, - top_level_replacement: &str, -) -> String { +/// Contract the root component of a path +fn contract_path(full_path: &PathBuf, top_level_path: &PathBuf, top_level_replacement: &str) -> String { + if !full_path.starts_with(top_level_path) { + return full_path.to_str().unwrap().to_string(); + } + if full_path == top_level_path { return top_level_replacement.to_string(); } - let full_path_depth = full_path.components().count(); let top_level_path_depth = top_level_path.components().count(); - // Don't bother with replacing top level path if length is long enough - if full_path_depth - top_level_path_depth >= *length { - return full_path - .iter() - .skip(full_path_depth - length) - .collect::<PathBuf>() - .to_str() - .unwrap() - .to_string(); - } - format!( "{replacement}{separator}{path}", replacement = top_level_replacement, @@ -108,6 +91,21 @@ fn truncate_path( ) } +/// Truncate a path to only have a set number of path components +fn truncate(dir_string: String, length: usize) -> String { + if length == 0 { + return dir_string; + } + + let components = dir_string.split(std::path::MAIN_SEPARATOR).collect::<Vec<&str>>(); + if components.len() < length { + return dir_string; + } + + let truncated_components = &components[..length]; + truncated_components.join(&std::path::MAIN_SEPARATOR.to_string()) +} + #[cfg(test)] mod tests { // TODO: Look into stubbing `env` so that tests can be run in parallel |