lla 0.5.3

Blazing Fast and highly customizable ls Replacement with Superpowers
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145

use crate::error::{LlaError, Result};
use chrono::Utc;
use lla_plugin_interface::proto::{DecoratedEntry, EntryMetadata};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::fs;
use std::path::PathBuf;

pub struct ListingCache {
    base_dir: PathBuf,
}

impl ListingCache {
    pub fn new() -> Result<Self> {
        let mut root = dirs::cache_dir().unwrap_or_else(|| PathBuf::from("."));
        root = root.join("lla").join("listings");
        fs::create_dir_all(&root)?;
        Ok(Self { base_dir: root })
    }

    pub fn load(&self, key: &str) -> Result<Option<Vec<DecoratedEntry>>> {
        let path = self.cache_path(key);
        if !path.exists() {
            return Ok(None);
        }

        let bytes = fs::read(&path)?;
        let listing: CachedListing = serde_json::from_slice(&bytes).map_err(|err| {
            LlaError::Other(format!(
                "Failed to read cached listing {}: {}",
                path.display(),
                err
            ))
        })?;

        Ok(Some(
            listing
                .entries
                .into_iter()
                .map(DecoratedEntry::from)
                .collect(),
        ))
    }

    pub fn save(&self, key: &str, summary: &str, entries: &[DecoratedEntry]) -> Result<()> {
        let path = self.cache_path(key);
        let listing = CachedListing {
            context_summary: summary.to_string(),
            generated_at: Utc::now().to_rfc3339(),
            entry_count: entries.len(),
            entries: entries.iter().map(SerializableEntry::from).collect(),
        };

        let data = serde_json::to_vec_pretty(&listing)?;
        fs::write(&path, data)?;
        Ok(())
    }

    fn cache_path(&self, key: &str) -> PathBuf {
        self.base_dir.join(format!("{}.json", key))
    }
}

#[derive(Serialize, Deserialize)]
struct CachedListing {
    context_summary: String,
    generated_at: String,
    entry_count: usize,
    entries: Vec<SerializableEntry>,
}

#[derive(Serialize, Deserialize)]
struct SerializableEntry {
    path: String,
    metadata: Option<SerializableMetadata>,
    custom_fields: HashMap<String, String>,
}

#[derive(Serialize, Deserialize)]
struct SerializableMetadata {
    size: u64,
    modified: u64,
    accessed: u64,
    created: u64,
    is_dir: bool,
    is_file: bool,
    is_symlink: bool,
    permissions: u32,
    uid: u32,
    gid: u32,
}

impl From<&DecoratedEntry> for SerializableEntry {
    fn from(entry: &DecoratedEntry) -> Self {
        SerializableEntry {
            path: entry.path.clone(),
            metadata: entry.metadata.as_ref().map(SerializableMetadata::from),
            custom_fields: entry.custom_fields.clone(),
        }
    }
}

impl From<SerializableEntry> for DecoratedEntry {
    fn from(entry: SerializableEntry) -> Self {
        DecoratedEntry {
            path: entry.path,
            metadata: entry.metadata.map(EntryMetadata::from),
            custom_fields: entry.custom_fields,
        }
    }
}

impl From<&EntryMetadata> for SerializableMetadata {
    fn from(meta: &EntryMetadata) -> Self {
        SerializableMetadata {
            size: meta.size,
            modified: meta.modified,
            accessed: meta.accessed,
            created: meta.created,
            is_dir: meta.is_dir,
            is_file: meta.is_file,
            is_symlink: meta.is_symlink,
            permissions: meta.permissions,
            uid: meta.uid,
            gid: meta.gid,
        }
    }
}

impl From<SerializableMetadata> for EntryMetadata {
    fn from(meta: SerializableMetadata) -> Self {
        EntryMetadata {
            size: meta.size,
            modified: meta.modified,
            accessed: meta.accessed,
            created: meta.created,
            is_dir: meta.is_dir,
            is_file: meta.is_file,
            is_symlink: meta.is_symlink,
            permissions: meta.permissions,
            uid: meta.uid,
            gid: meta.gid,
        }
    }
}