use serde_json:: { json, Value };
use anyhow::{ anyhow, Result };
pub fn print_json(value: &Value) {
println!("{}", serde_json::to_string_pretty(value).unwrap())
}
pub fn read_json(file: &str, key: &str) -> Result<Value> {
let file = match std::fs::File::open(file) {
Ok(resp) => resp,
Err(e) => return Err(anyhow!(e))
};
match serde_json::from_reader::<_, Value>(file) {
Ok(resp) => {
match resp.get(key) {
Some(result) => Ok(json!(result)),
None => Err(anyhow!("字段不存在"))
}
}
Err(e) => Err(anyhow!("json解析失败：{}", e))
}
}
pub fn file_to_json(file: &str) -> Result<Value> {
let file = match std::fs::File::open(file) {
Ok(resp) => resp,
Err(e) => return Err(anyhow!(e))
};
match serde_json::from_reader::<_, Value>(file) {
Ok(resp) => Ok(resp),
Err(e) => Err(anyhow!("json解析失败：{}", e))
}
}
pub fn json_to_file(file: &str, content: &Value) -> Result<()>{
let file = match std::fs::File::create(file) {
Ok(resp) => resp,
Err(e) => return Err(anyhow!("文件不存在或无权限：{}", e)),
};
serde_json::to_writer_pretty(file, content)?;
Ok(())
}