72 lines
2.2 KiB
Rust
72 lines
2.2 KiB
Rust
use super::{Problem, ProblemManager};
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use std::fs;
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use regex::{Regex};
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impl ProblemManager {
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pub fn scan() -> Result<ProblemManager, Box<dyn std::error::Error>> {
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let pattern = Regex::new(r"p(\d{4})_")?;
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let mut problems = Vec::new();
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let mod_content = fs::read_to_string("./src/problem/mod.rs")?;
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for i in pattern.captures_iter(&mod_content) {
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match i.get(1) {
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None => {}
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Some(value) => {
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match value.as_str().parse::<u32>() {
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Ok(id) => {
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problems.push(id);
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}
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Err(_) => {}
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}
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}
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}
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}
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Ok(ProblemManager {
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problem_list: problems
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})
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}
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}
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impl Problem {
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pub fn get_filename(&self) -> String {
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format!("p{}_{}", self.question_id, self.title_slug.replace('-', "_"))
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}
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pub fn get_file_content(&self) -> Result<String, Box<dyn std::error::Error>> {
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let template = fs::read_to_string("./template.rs")?;
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let code = self.code_definition
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.iter()
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.find(|x| x.value == "rust");
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let code = code.ok_or::<Box<dyn std::error::Error>>(
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format!("problem {} doesn't have rust version", self.question_id).into()
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)?;
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let source = template
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.replace("__PROBLEM_TITLE__", &self.title)
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.replace("__PROBLEM_ID__", self.question_id.to_string().as_str())
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.replace(
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"__PROBLEM_DEFAULT_CODE__",
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&code.default_code)
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.replace("__EXTRA_USE__", &parse_extra_use(&code.default_code));
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Ok(source)
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}
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}
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fn parse_extra_use(code: &str) -> String {
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let mut extra_use_line = String::new();
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// a linked-list problem
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if code.contains("pub struct ListNode") {
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extra_use_line.push_str("\nuse crate::util::linked_list::{ListNode, to_list};")
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}
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if code.contains("pub struct TreeNode") {
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extra_use_line.push_str("\nuse crate::util::tree::{TreeNode, to_tree};")
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}
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if code.contains("pub struct Point") {
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extra_use_line.push_str("\nuse crate::util::point::Point;")
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}
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extra_use_line
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} |