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use std::{ io};
use std::fs;
use std::collections::HashMap;
use crate::{Value, ColumnType};
use regex::Regex;
use std::path::Path;
use std::fs::File;
use std::io::BufRead;
pub fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
where P: AsRef<Path>, {
let file = File::open(filename)?;
Ok(io::BufReader::new(file).lines())
}
pub fn read_sql(_filepath : &str, arg : &HashMap<String, Value>) -> String {
let contents = fs::read_to_string(_filepath) .expect("Something went wrong reading the file");
bind_variables(&contents.trim(), arg)
}
pub fn bind_variables(_sql : &str, arg : &HashMap<String, Value>) -> String{
let mut sql = String::from(_sql);
for(key, value) in arg {
let re_key = Regex::new(format!("(?i):{}( |$|\t|\r|\n|,)", key).as_str()).unwrap();
let re_key2 = Regex::new(format!("(?i):{}\\)", key).as_str()).unwrap();
if let Value::String(m) = &value {
sql = re_key.replace_all(&sql, format!("'{}'\n", m.replace("'","''")).as_str()).to_string();
sql = re_key2.replace_all(&sql, format!("'{}')", m.replace("'","''")).as_str()).to_string();
}
if let Value::StringLikeLeft(m) = &value {
sql = re_key.replace_all(&sql, format!("'%{}'\n", m).as_str()).to_string();
}
if let Value::StringLikeRight(m) = &value {
sql = re_key.replace_all(&sql, format!("'{}%'\n", m).as_str()).to_string();
}
if let Value::StringLikeBoth(m) = &value {
sql = re_key.replace_all(&sql, format!("'%{}%'\n", m).as_str()).to_string();
}
if let Value::Float(m) = &value {
sql = re_key.replace_all(&sql, format!("{}\n", m).as_str()).to_string();
sql = re_key2.replace_all(&sql, format!("{})", m).as_str()).to_string();
}
if let Value::Integer(m) = &value {
sql = re_key.replace_all(&sql, format!("{}\n", m).as_str()).to_string();
sql = re_key2.replace_all(&sql, format!("{})", m).as_str()).to_string();
}
if let Value::Bool(m) = &value {
sql = re_key.replace_all(&sql, format!("{}\n", m).as_str()).to_string();
sql = re_key2.replace_all(&sql, format!("{})", m).as_str()).to_string();
}
if let Value::BareString(m) = &value {
sql = re_key.replace_all(&sql, format!("{}\n", m).as_str()).to_string();
sql = re_key2.replace_all(&sql, format!("{})", m).as_str()).to_string();
}
if let Value::StringArray(list) =&value{
let mut v = String::new();
for (i, item) in list.iter().enumerate() {
if i > 0 {
v.push_str(", ");
}
v.push_str(format!("'{}'", item).as_str());
}
sql = re_key.replace_all(&sql, format!("{} ", v).as_str()).to_string();
sql = re_key2.replace_all(&sql, format!("{})", v).as_str()).to_string();
}
if let Value::IntegerArray(list) =&value{
let mut v = String::new();
for (i, item) in list.iter().enumerate() {
if i > 0 {
v.push_str(", ");
}
v.push_str(format!("{}", item).as_str());
}
sql = re_key.replace_all(&sql, format!("{}\n", v).as_str()).to_string();
sql = re_key2.replace_all(&sql, format!("{})", v).as_str()).to_string();
}
}
sql
}
pub fn bind_values(value_map : &HashMap<String, Value>) -> String {
let mut sql = String::new();
let mut idx = 0;
for (_key, value) in value_map {
if idx > 0 {
sql.push_str(", ");
}
idx = idx + 1;
if let Value::String(m) = value {
sql.push_str("'");
sql.push_str(m.replace("'","''").as_str());
sql.push_str("'");
}
if let Value::Float(m) = value {
sql.push_str(format!("{}", m).as_str());
}
if let Value::Integer(m) = value {
sql.push_str(format!("{}", m).as_str());
}
}
sql
}
pub fn get_column_type(column_info : &str) -> ColumnType {
let re_str = Regex::new("VARCHAR2").unwrap();
let re_int = Regex::new("NUMBER\\(\\d+\\)").unwrap();
let re_float = Regex::new("NUMBER\\(\\d+,\\d+\\)").unwrap();
let re_date = Regex::new("DATE").unwrap();
if re_str.is_match(column_info) {
ColumnType::String
} else if re_int.is_match(column_info) {
ColumnType::Integer
} else if re_float.is_match(column_info) {
ColumnType::Float
} else if re_date.is_match(column_info) {
ColumnType::Date
}else {
ColumnType::String
}
}
pub fn get_string_value (arg : Option<&Value>) -> &str {
let mut rt = "";
if let Some(x) = arg {
if let Value::String(y) = x {
rt = y.as_str();
}
}
rt
}
pub fn get_integer_value (arg : Option<&Value>) -> &i64 {
let mut rt : &i64 = &0;
if let Some(x) = arg {
if let Value::Integer(y) = x {
rt = y;
}
}
rt
}
pub fn get_float_value (arg : Option<&Value>) -> &f64 {
let mut rt = &0.0;
if let Some(x) = arg {
if let Value::Float(y) = x {
rt = y;
}
}
rt
}
#[cfg(test)]
mod tests {
#[test]
fn hello_test (){
println!("Hello");
}
}