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iters in parse_file

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This commit is contained in:
Dmitry Belyaev 2019-07-27 11:23:35 +03:00
parent ce92ec5e87
commit ebae59dcb0
Signed by: b4tman
GPG Key ID: 41A00BF15EA7E5F3
1 changed files with 61 additions and 64 deletions
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src/main.rs
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@ -115,75 +115,72 @@ fn parse_file(file: impl io::Read) -> Result<json::JsonValue, Box<std::error::Er
}; };
let mut ctx = &mut context; let mut ctx = &mut context;
for line in reader.lines() { reader
// ignore empty lines .lines()
let line_str = String::from(line.unwrap().trim()); .map(|line| String::from(line.unwrap().trim()))
let line_s = &line_str; .filter(|line| !line.is_empty()) // ignore empty lines
if line_s.is_empty() { .for_each(|line| {
continue; match patterns
} .iter() // find keyword
// find keywords .find(|&&pattern| line.starts_with(pattern) && line.ends_with(':'))
match patterns {
.iter() Some(pattern) => {
.find(|&&pattern| line_s.starts_with(pattern) && line_s.ends_with(':')) use KeywordType::*;
{
Some(pattern) => {
use KeywordType::*;
ctx.last_keyword_type = ctx.cur_keyword_type; ctx.last_keyword_type = ctx.cur_keyword_type;
ctx.last_tag = ctx.cur_tag.clone(); ctx.last_tag = ctx.cur_tag.clone();
ctx.cur_keyword_type = Some(keyword_type(&pattern)); ctx.cur_keyword_type = Some(keyword_type(&pattern));
ctx.cur_tag = pattern.replace(' ', "").replace(':', ""); ctx.cur_tag = pattern.replace(' ', "").replace(':', "");
// remember question id // remember question id
if let Some(QuestionStart) = ctx.cur_keyword_type { if let Some(QuestionStart) = ctx.cur_keyword_type {
ctx.cur_question_pre["id"] = line_s.replace(':', "").as_str().into(); ctx.cur_question_pre["id"] = line.replace(':', "").as_str().into();
}; };
// apply accumulated content when new keyword found // apply accumulated content when new keyword found
match ctx.last_keyword_type { match ctx.last_keyword_type {
Some(Global) => { Some(Global) => {
ctx.cur_scope = DataScope::Global; ctx.cur_scope = DataScope::Global;
ctx.data[&ctx.last_tag] = ctx.cur_content.join("\n").into() ctx.data[&ctx.last_tag] = ctx.cur_content.join("\n").into()
}
Some(QuestionPre) => {
ctx.cur_scope = DataScope::QuestionPre;
ctx.cur_question_pre[&ctx.last_tag] = ctx.cur_content.join("\n").into();
}
Some(QuestionStart) => {
ctx.cur_scope = DataScope::QuestionContent;
// store prev question before reading new
if ctx.have_new_question {
ctx.questions.push(ctx.cur_question.clone()).unwrap();
} }
// prepare for read new question data with cur_question_pre values Some(QuestionPre) => {
ctx.cur_question = ctx.cur_question_pre.clone(); ctx.cur_scope = DataScope::QuestionPre;
// ctx.cur_question_pre = json::JsonValue::new_object(); // uncomment => forget pre at new question ctx.cur_question_pre[&ctx.last_tag] = ctx.cur_content.join("\n").into();
ctx.cur_question[&ctx.last_tag] = ctx.cur_content.join("\n").into(); }
ctx.have_new_question = true; Some(QuestionStart) => {
} ctx.cur_scope = DataScope::QuestionContent;
Some(QuestionContent) => { // store prev question before reading new
ctx.cur_question[&ctx.last_tag] = ctx.cur_content.join("\n").into(); if ctx.have_new_question {
} ctx.questions.push(ctx.cur_question.clone()).unwrap();
Some(CurrentScope) => { }
// match value to store data // prepare for read new question data with cur_question_pre values
(match ctx.cur_scope { ctx.cur_question = ctx.cur_question_pre.clone();
DataScope::Global => &mut ctx.data, // ctx.cur_question_pre = json::JsonValue::new_object(); // uncomment => forget pre at new question
DataScope::QuestionPre => &mut ctx.cur_question_pre, ctx.cur_question[&ctx.last_tag] = ctx.cur_content.join("\n").into();
DataScope::QuestionContent => &mut ctx.cur_question, ctx.have_new_question = true;
})[&ctx.last_tag] = ctx.cur_content.join("\n").into(); }
} Some(QuestionContent) => {
_ => (), //None or Ignore ctx.cur_question[&ctx.last_tag] = ctx.cur_content.join("\n").into();
}; }
// clear content Some(CurrentScope) => {
ctx.cur_content.clear(); // match value to store data
(match ctx.cur_scope {
DataScope::Global => &mut ctx.data,
DataScope::QuestionPre => &mut ctx.cur_question_pre,
DataScope::QuestionContent => &mut ctx.cur_question,
})[&ctx.last_tag] = ctx.cur_content.join("\n").into();
}
_ => (), //None or Ignore
};
// clear content
ctx.cur_content.clear();
}
None => {
// accumulate content if line is not a keyword
ctx.cur_content.push(line);
}
} }
None => { });
// accumulate content if line is not a keyword
ctx.cur_content.push(String::from(line_s));
}
}
}
// finish reading last question // finish reading last question
if ctx.have_new_question && !ctx.cur_content.is_empty() { if ctx.have_new_question && !ctx.cur_content.is_empty() {