Htrace 2.0.0

simple tracing system
Documentation 
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

use std::collections::HashMap;
use time::macros::format_description;
use crate::components::trace::OneTrace;
use regex::Regex;

pub const FORMATTER_VARIABLE: [&str; 8] = ["time","lvl","file","line","msg","thread","context","extra"];

pub type FormaterCompilerSignature = fn(formater: &String) -> FormaterCompiled;
pub type FormaterParamBuilderSignature = fn(&OneTrace, &String) -> HashMap<String, String>;

pub struct FormaterCompiled
{
	pub inner: Vec<(String, Option<FormaterData>)>,
}

/// used to store and render the pre-compiled formater
impl FormaterCompiled
{
	/// render the pre-compiled formater
	/// parameters is a simple array created with FormaterParamBuilder
	pub fn render(&self, parameters: HashMap<String, String>) -> String
	{
		return self.inner.iter().map(|(previous,data)|{
			if let Some(data) = data
			{
				match parameters.get(&data.data) {
					None => {}
					Some(content) => {
						if(!content.is_empty()) {
							return format!("{}{}{}{}", previous, data.prefix, parameters.get(&data.data).unwrap_or(&String::new()), data.suffix);
						}
					}
				}
			}
			return previous.clone();
		}).collect::<Vec<String>>().join("");
	}
}

/// used to store data name, and also it's prefix/suffix
#[derive(Debug)]
pub struct FormaterData {
	pub prefix: String,
	pub data: String,
	pub suffix: String,
}

/// default formater for Htrace
/// compile the formater into a faster array inside a FormaterCompiled.render()
/// you can replace it with FormaterCompilerSignature (and put in inside config of module)
/// example of a formater string : `{time} {lvl} ({thread:>, }{file}:l{line} |{extra[test]}|) : {msg}`
/// each variable is present in FORMATTER_VARIABLE
/// extra is special, it can be used to get extra information from thread or context
pub fn FormaterCompile(formater: &String) -> FormaterCompiled
{
	let mut compiled = vec![];
	let mut lastchar = 0;
	let regexstr = format!(r"\{{({})(:([><])([^}}]+))?\}}", FORMATTER_VARIABLE.map(|var|{
		if(var=="extra")
		{
			return r"extra\[([^\]]+)\]";
		}
		return var;
	}).join("|"));
	let regex = Regex::new(&regexstr).unwrap();
	let _ = regex.replace_all(formater, |caps: &regex::Captures| {
		let mut data = caps.get(1).unwrap().as_str().to_string();
		let previous = &formater[lastchar..caps.get(0).unwrap().start()];
		lastchar = caps.get(0).unwrap().end();

		//when extra
		if(data.starts_with("extra"))
		{
			if let Some(extrakey) = caps.get(2)
			{
				data=format!("extra:{}",extrakey.as_str());
			}
		}

		// prefix/suffix
		let mut prefix = "".to_string();
		let mut suffix = "".to_string();
		if let Some(indicator) = caps.get(4)
		{
			if let Some(affix) = caps.get(5)
			{
				if(indicator.as_str()=="<")
				{
					prefix = affix.as_str().to_string();
				}
				else
				{
					suffix = affix.as_str().to_string();
				}
			}
		}

		compiled.push((previous.to_string(), Some(FormaterData{
			prefix: prefix,
			data,
			suffix: suffix,
		})));
		"".to_string()
	}).into_owned();

	compiled.push((formater[lastchar..].to_string(), None));

	return FormaterCompiled{ inner: compiled };
}


/// format a string in a simple way errorless
/// you can replace it with FormaterParamBuilderSignature (and put in inside config of module)
pub fn FormaterParamBuilder(trace: &OneTrace, lineReturn: &String) -> HashMap<String, String>
{
	let mut msg = trace.message.clone();
	if(msg.contains("\n") || msg.contains("\r") || msg.contains("\\n") || msg.contains("\\r"))
	{
		let linereturn = format!("\n{}",lineReturn);
		msg = msg.replace("\n\r","\n");
		msg = msg.replace("\\n\\r","\n");
		msg = msg.replace("\r","\n");
		msg = msg.replace("\\r","\n");
		msg = msg.replace("\\n","\n");
		msg = msg.replace("\n",linereturn.as_str());
	}

	if(trace.backtraces.len()>0)
	{
		let mut drawBacktraces= "".to_string();
		trace.backtraces.iter().for_each(|one|{
			drawBacktraces = format!("{}\n{}{}",drawBacktraces,lineReturn,one.to_string());
		});

		msg = format!("{}, with : {}",msg,drawBacktraces)
	}

	let mut parameters = HashMap::new();
	let formatTime = format_description!("[hour repr:24]:[minute]:[second].[subsecond digits:6]");
	parameters.insert("time".to_string(), trace.date.format(formatTime).unwrap_or("00:00:00.000000".to_string()));
	parameters.insert("lvl".to_string(), trace.level.convert4LengthString());
	parameters.insert("thread".to_string(), trace.context.threadName_get().clone().unwrap_or("".to_string()));
	parameters.insert("context".to_string(), trace.context.name_get().clone().unwrap_or("".to_string()));
	parameters.insert("file".to_string(), trace.filename.clone());
	parameters.insert("line".to_string(), trace.fileline.to_string());

	trace.context.extra_getAll().iter().for_each(|(key,data)|{
		parameters.insert(format!("extra:{}",key), data.to_string());
	});

	parameters.insert("msg".to_string(), msg);
	return parameters;
}