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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169

use std::collections::{HashMap, HashSet};
use std::sync::RwLock;

use instant::Instant;

use crate::elapsed_seconds;

pub struct CmdArgs {
    kv: HashMap<String, String>,
    bits: HashSet<String>,
    free: Vec<String>,

    used: HashSet<String>,
}

impl CmdArgs {
    pub fn new() -> CmdArgs {
        let mut args = CmdArgs {
            kv: HashMap::new(),
            bits: HashSet::new(),
            free: Vec::new(),
            used: HashSet::new(),
        };

        #[cfg(not(target_arch = "wasm32"))]
        {
            // TODO Hijacking this to also initialize logging!
            log::set_boxed_logger(Box::new(Logger {
                last_fp_note: RwLock::new(None),
            }))
            .unwrap();
            log::set_max_level(log::LevelFilter::Debug);

            for arg in std::env::args().skip(1) {
                let parts: Vec<&str> = arg.split('=').collect();
                if parts.len() == 1 {
                    if arg.starts_with("--") {
                        args.bits.insert(arg);
                    } else {
                        args.free.push(arg);
                    }
                } else if parts.len() == 2 {
                    args.kv.insert(parts[0].to_string(), parts[1].to_string());
                } else {
                    panic!("Weird argument {}", arg);
                }
            }
        }

        args
    }

    pub fn required(&mut self, key: &str) -> String {
        if let Some(value) = self.kv.remove(key) {
            value
        } else {
            panic!("Missing required arg {}", key);
        }
    }

    pub fn optional(&mut self, key: &str) -> Option<String> {
        if let Some(value) = self.kv.remove(key) {
            self.used.insert(key.to_string());
            Some(value)
        } else if self.used.contains(key) {
            panic!("args.optional(\"{}\") called twice!", key);
        } else {
            None
        }
    }

    pub fn optional_parse<T, E, F: Fn(&str) -> Result<T, E>>(
        &mut self,
        key: &str,
        parser: F,
    ) -> Option<T> {
        let value = self.optional(key)?;
        match parser(&value) {
            Ok(result) => Some(result),
            Err(_) => panic!("Bad argument {}={}", key, value),
        }
    }

    pub fn true_false(&mut self, key: &str) -> bool {
        match self.required(key).as_ref() {
            "true" => true,
            "false" => false,
            x => panic!("{}={} is invalid; must be true or false", key, x),
        }
    }

    pub fn enabled(&mut self, key: &str) -> bool {
        if self.bits.remove(key) {
            self.used.insert(key.to_string());
            true
        } else if self.used.contains(key) {
            panic!("args.enabled(\"{}\") called twice!", key);
        } else {
            false
        }
    }

    pub fn required_free(&mut self) -> String {
        if self.free.is_empty() {
            panic!("Required free argument not provided");
        }
        self.free.remove(0)
    }

    pub fn optional_free(&mut self) -> Option<String> {
        if self.free.is_empty() {
            None
        } else {
            Some(self.free.remove(0))
        }
    }

    // TODO Drop?
    pub fn done(&mut self) {
        if !self.kv.is_empty() {
            panic!("Unused arguments: {:?}", self.kv);
        }
        if !self.bits.is_empty() {
            panic!("Unused arguments: {:?}", self.bits);
        }
        if !self.free.is_empty() {
            panic!("Unused free arguments: {:?}", self.free);
        }
    }
}

// TODO Tie this to a Timer
struct Logger {
    last_fp_note: RwLock<Option<Instant>>,
}

impl log::Log for Logger {
    fn enabled(&self, _: &log::Metadata) -> bool {
        true
    }
    fn log(&self, record: &log::Record) {
        let target = if record.target().len() > 0 {
            record.target()
        } else {
            record.module_path().unwrap_or_default()
        };

        if target == "fast_paths::fast_graph_builder" {
            // Throttle these
            let mut last = self.last_fp_note.write().unwrap();
            if last
                .map(|start| elapsed_seconds(start) < 1.0)
                .unwrap_or(false)
            {
                return;
            }
            *last = Some(Instant::now());
        }
        // Silence these; they're expected on any map using simplified Chinese or kanji.
        let contents = format!("{}", record.args());
        if target == "usvg::convert::text::shaper" {
            if contents.contains("Fallback") {
                return;
            }
        }
        println!("[{}] {}: {}", record.level(), target, contents);
    }
    fn flush(&self) {}
}