first commit

src/main.rs

@@ -0,0 +1,196 @@
+use std::{fs, str};
+
+use std::io::{BufRead, BufReader};
+use zip;
+use tacview_splitter::lib;
+use tacview_splitter::lib::WriteData;
+
+const COMMENT: char = '#';
+const MINUS: char = '-';
+const EXTENSION_ZIP: &str = ".zip.acmi";
+const EXTENSION_TXT: &str = ".txt.acmi";
+
+const UNKNOWN: u8 = 0;
+const TIMESTAMP: u8 = 1;
+const DESTRUCTION: u8 = 2;
+const TELEMETRY: u8 = 3;
+
+const ERR_CANNOT_OPEN_OUTPUT: &str = "Could not open output file";
+
+
+fn main() {
+    let (input_filename, is_zip) = find_input_file();
+    println!("Processing {}", input_filename);
+    let lines = read_data(&input_filename, is_zip);
+    let (header, body) = split_into_header_and_body(lines);
+    let bodies_by_coalition = divide_body_by_coalition(&body);
+
+    let output_filenames = get_output_filenames(&input_filename);
+    if is_zip {
+        let mut descriptors = get_descriptors_zip(output_filenames);
+        descriptors.write(header, bodies_by_coalition)
+    } else {
+        let mut descriptors = get_descriptors_txt(output_filenames);
+        descriptors.write(header, bodies_by_coalition)
+    }
+}
+
+fn split_into_header_and_body(lines: Vec<String>) -> (Vec<String>, Vec<String>) {
+    let mut i=0;
+    for line in &lines {
+        if line.chars().nth(0).expect("malformed line") == COMMENT {
+            break
+        }
+        i += 1;
+    }
+    return (lines[..i].to_vec(), lines[i..].to_vec());
+}
+
+fn divide_body_by_coalition(body: &'static Vec<String>) -> lib::BodiesByCoalition<'static> {
+    let mut bbc = lib::BodiesByCoalition{blue: Vec::new(), red: Vec::new(), violet: Vec::new()};
+    let mut continued = false;
+    let mut line_type: u8 = UNKNOWN;
+    let mut ids = lib::IDs{blue: Vec::new(), red: Vec::new(), violet: Vec::new(), unknown: Vec::new()};
+    for line in body {
+        let result = process_line(continued, &mut ids, line, line_type);
+        line_type = result.0;
+        continued = result.1;
+        let id = result.2;
+        if line_type == TIMESTAMP {
+            bbc.blue.push(line);
+            bbc.red.push(line);
+            bbc.violet.push(line);
+        } else {  // destruction or telemetry
+            if ids.blue.contains(&id) {
+                bbc.blue.push(line);
+            } else if ids.red.contains(&id) {
+                bbc.red.push(line);
+            } else if ids.violet.contains(&id) {
+                bbc.violet.push(line);
+            }
+        }
+    }
+    bbc
+}
+
+fn process_line<'a>(continued: bool, ids: &mut lib::IDs<'a>, line: &'a String, last_line_type: u8) -> (u8, bool, &'a str) {
+    let mut id = "both";
+    let line_type;
+    let will_continue: bool;
+    if !continued {
+        let first_char = line.chars().nth(0).expect("malformed line");
+        if first_char == COMMENT {
+            line_type = TIMESTAMP;
+        } else if first_char == MINUS {
+            line_type = DESTRUCTION;
+        } else {
+            line_type = TELEMETRY;
+        }
+
+        if line_type == TELEMETRY {
+            id = line
+                .split_once(',')
+                .unwrap()
+                .0;
+            //let id_str = id.to_string();
+            if line.contains("Color=") {
+                if line.contains("Color=Blue") {
+                    ids.blue.push(id);
+                } else if line.contains("Color=Red") {
+                    ids.red.push(id);
+                } else if line.contains("Color=Violet") {
+                    ids.violet.push(id);
+                } else {
+                    ids.unknown.push(id);
+                }
+            }
+        }
+    } else {
+        line_type = last_line_type;
+    }
+    if line.ends_with("\\") {
+        will_continue = true;
+    } else {
+        will_continue = false;
+    }
+    (line_type, will_continue, id)
+}
+
+fn get_output_filenames(input_filename: &String) -> lib::OutputFilenames {
+    let blue = input_filename.replace(".zip", "_blue.zip");
+    let red = input_filename.replace(".zip", "_red.zip");
+    let violet = input_filename.replace(".zip", "_violet.zip");
+    let output_filenames_zip = lib::FilenamesVariant{blue, red, violet};
+
+    let blue = input_filename.replace(".zip", "_blue.txt");
+    let red = input_filename.replace(".zip", "_red.txt");
+    let violet = input_filename.replace(".zip", "_violet.txt");
+    let output_filenames_txt = lib::FilenamesVariant{blue, red, violet};
+
+    let output_filenames = lib::OutputFilenames{txt: output_filenames_txt, zip: output_filenames_zip};
+    output_filenames
+}
+
+fn find_input_file() -> (String, bool) {
+    let read_dir = fs::read_dir(".").expect("Could not read current directory");
+    for entry_result in read_dir {
+        let entry = entry_result.expect("Could not parse DirEntry");
+        let path_buf = entry.path();
+        let filename = path_buf.to_string_lossy().to_string();
+        if filename.ends_with(EXTENSION_TXT) {
+            return (filename, false);
+        } else if filename.ends_with(EXTENSION_ZIP) {
+            return (filename, true);
+        }
+    };
+    println!("No tacview input file found in current directory.");
+    std::process::exit(1);
+}
+
+
+fn read_data(filename: &String, is_zip: bool) -> Vec<String> {
+    let file = fs::File::open(filename).expect("Could not read from input file");
+    let buf = BufReader::new(file);
+    return if is_zip {
+        let mut archive = zip::ZipArchive::new(buf).expect("Could not read zip data");
+        let inner_file = archive.by_index(0).unwrap();
+        let inner_buf = BufReader::new(inner_file);
+        let lines: Vec<String> = inner_buf.lines()
+            .map(|l| l.expect("Could not parse line"))
+            .collect();
+        lines
+    } else {
+        let lines: Vec<String> = buf.lines()
+            .map(|l| l.expect("Could not parse line"))
+            .collect();
+        lines
+    }
+}
+
+fn get_descriptors_zip(filenames: lib::OutputFilenames) -> lib::DescriptorsZip {
+    let options = zip::write::FileOptions::default().compression_method(zip::CompressionMethod::Deflated);
+
+    let file = fs::File::create(&filenames.zip.blue).expect(ERR_CANNOT_OPEN_OUTPUT);
+    let mut blue = zip::ZipWriter::new(file);
+    blue.start_file(&filenames.txt.blue, options).unwrap();
+
+    let file = fs::File::create(&filenames.zip.red).expect(ERR_CANNOT_OPEN_OUTPUT);
+    let mut red = zip::ZipWriter::new(file);
+    red.start_file(&filenames.txt.red, options).unwrap();
+
+    let file = fs::File::create(&filenames.zip.violet).expect(ERR_CANNOT_OPEN_OUTPUT);
+    let mut violet = zip::ZipWriter::new(file);
+    violet.start_file(&filenames.txt.violet, options).unwrap();
+
+    let descriptors = lib::DescriptorsZip{blue, red, violet};
+    descriptors
+}
+
+fn get_descriptors_txt(filenames: lib::OutputFilenames) -> lib::DescriptorsTxt {
+    let blue = fs::File::create(&filenames.txt.blue).expect(ERR_CANNOT_OPEN_OUTPUT);
+    let red = fs::File::create(&filenames.txt.red).expect(ERR_CANNOT_OPEN_OUTPUT);
+    let violet = fs::File::create(&filenames.txt.violet).expect(ERR_CANNOT_OPEN_OUTPUT);
+    let descriptors = lib::DescriptorsTxt{blue, red, violet};
+    descriptors
+}
+