refactor parser: rename error messages, add static variables with lazy_static

Cargo.lock

@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "android-tzdata"
 version = "0.1.1"
@@ -74,7 +83,10 @@ dependencies = [
  "byteorder",
  "chrono",
  "clap",
+ "lazy_static",
+ "regex",
  "strum",
+ "walkdir",
 ]
 
 [[package]]
@@ -208,6 +220,15 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+dependencies = [
+ "spin",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.169"
@@ -220,6 +241,12 @@ version = "0.4.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04cbf5b083de1c7e0222a7a51dbfdba1cbe1c6ab0b15e29fff3f6c077fd9cd9f"
 
+[[package]]
+name = "memchr"
+version = "2.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -253,18 +280,62 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "regex"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
+
 [[package]]
 name = "rustversion"
 version = "1.0.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7c45b9784283f1b2e7fb61b42047c2fd678ef0960d4f6f1eba131594cc369d4"
 
+[[package]]
+name = "same-file"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "shlex"
 version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
+[[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
 [[package]]
 name = "strsim"
 version = "0.11.1"
@@ -316,6 +387,16 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
+[[package]]
+name = "walkdir"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
+dependencies = [
+ "same-file",
+ "winapi-util",
+]
+
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.100"
@@ -374,6 +455,15 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "winapi-util"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
+dependencies = [
+ "windows-sys",
+]
+
 [[package]]
 name = "windows-core"
 version = "0.52.0"

Cargo.toml

@@ -8,3 +8,6 @@ byteorder = "1.4.3"
 chrono = "0.4"
 strum = { version = "0.26", features = ["derive"] }
 clap = "4.*" 
+lazy_static = { version = "1.5.0", features = ["spin_no_std"] }
+regex = "1.7.0"
+walkdir = "2.3.2"

src/main.rs

@@ -6,6 +6,15 @@ pub mod asotr_data {
     use chrono::{DateTime, Utc};
     use std::time::{SystemTime, UNIX_EPOCH, Duration};
     use strum::FromRepr;
+    use lazy_static::lazy_static;
+    use std::path::PathBuf;
+    use regex::Regex;
+    use walkdir::WalkDir;
+
+    lazy_static! {
+        pub static ref support_dtypes: String = 
+            String::from(".data01.asotr01(02), data02.asotr01(02), data06.asotr01(02)");
+    }
 
     #[derive(Debug, FromRepr, PartialEq)]
     enum AsotrDataType {
@@ -55,56 +64,69 @@ pub mod asotr_data {
             ch[i] = match data.read_u16::<LittleEndian>() {
                 Ok(val) => val,
                 Err(msg) => { 
-                    return Err(format!("Error parsing file: failed parsing float32 data: {}", msg)); }
+                    return Err(format!("Error parsing file: failed parsing uint16 data: {}", msg)); }
             }
         }
 
         return Ok(ch);
     }
 
-
+    fn parse_filename(filename_full: String) -> Result<AsotrDataDesc, String> {
-    fn parse_filename(filename_full: String) -> Result<(AsotrDataDesc, String), String> {
         let mut filename = String::new();
 
+        let msg_prev = format!("Error parsing filename {}:", filename_full);
+
         match filename_full.rfind('/') {
             Some(val) => { filename = (filename_full[val+1..filename_full.len()]).to_string(); }
             _ => { filename = filename_full.clone();  }
         }
 
-        if filename.len() != 32 { return Err(format!("Error parsing filename: Unsupported file ({})", filename)); }
+        if filename.len() != 32 { 
+            return Err(format!("{} unsupported file", msg_prev)); 
+        }
 
         let time_unix_ = filename[0..10].parse::<u64>();
         let time_unix = match &time_unix_ {
             Ok(data) => data,
-            Err(msg) => { return Err(format!("Error parsing filename: expected digits in timestamp sec part ({})", msg));  }
+            Err(msg) => { 
+                return Err(format!("{} expected digits in timestamp sec part ({})", 
+                                   msg_prev, msg));  
+            }
         };
 
         let data_type_ = filename[22..24].parse::<u8>();
         let data_type_u8 = match &data_type_ {
             Ok(data) => data,
-            Err(msg) => { return Err(format!("Error parsing filename: expected digits in data type part ({})", msg));  }
+            Err(msg) => { 
+                return Err(format!("{} expected digits in data type part ({})", 
+                                   msg_prev, msg));  
+            }
         };
 
         if *data_type_u8 == 1 || *data_type_u8 == 2 || *data_type_u8 == 6 { }
         else {
-            return Err("unsupported file type! Parser supports data types: .data01.asotr01(02), data02.asotr01(02), data06.asotr01(02)".to_string());
+            return Err(format!("{} parser supports data types: {}", 
+                               msg_prev, support_dtypes.to_string()));
         }
 
         let data_type = match AsotrDataType::from_repr(*data_type_u8 as usize) {
             Some(value) => value,
-            _ => return Err(format!("Error parsing filename d: expected digits in data type part"))
+            _ => return Err(format!("{} expected digits in data type part", 
+                                    msg_prev))
         };
 
         let _kit = filename[30..32].parse::<u8>();
         let kit = match &_kit {
             Ok(data) => data,
-            Err(msg) => { return Err(format!("Error parsing filename: expected digits in asotr kit part ({})", msg));  }
+            Err(msg) => { return Err(format!("{}: expected digits in asotr kit part ({})", 
+                                             msg_prev, msg));  }
         };
 
         let _time_str_mks = filename[11..17].parse::<u32>();
         let time_mks = match &_time_str_mks {
             Ok(data) => data,
-            Err(msg) => { return Err(format!("Error parsing filename: expected digits in timestamp mks part ({})", msg));  }
+            Err(msg) => { return Err(format!("{}: expected digits in timestamp mks part ({})", 
+                                             msg_prev, msg));  }
         };
 
         let time: SystemTime = UNIX_EPOCH + Duration::from_secs(*time_unix);
@@ -112,63 +134,62 @@ pub mod asotr_data {
         let date_s = date_time.format("%d.%m.%Y").to_string();
         let time_s = date_time.format("%H:%M:%S").to_string();
 
-        let asotrDataHead = AsotrDataDesc::new(*time_unix, *time_mks, 
+        let head = AsotrDataDesc::new(*time_unix, *time_mks, 
-                                           format!("{} {}", date_s, time_s),
+                                      format!("{} {}", date_s, time_s),
-                                           date_s, time_s, data_type, *kit);
+                                      date_s, time_s, data_type, *kit);
 
-        return Ok((asotrDataHead, filename));
+        return Ok(head);
     }
 
-    pub fn parse_data(filename_full: String) -> Result<String, String> {
+    pub fn read_data(filename_full: String) -> Result<String, String> {
         let ch_u16: [u16; 6];
         let ch_f32: [f32; 6];
 
-        let (asotr_head, filename) = parse_filename(filename_full.clone())?;
+        let asotr_head = parse_filename(filename_full.clone())?;
 
-            let mut buf = Vec::new();
+        let mut buf = Vec::new();
-            let mut out = String::new();
+        let mut out = String::new();
 
+        let mut data = match File::open(filename_full.clone())
+        {
+            Ok(file) => file,
+            Err(msg) => { return Err(format!("Error opening data file {}: {}", filename_full, msg)) }
+        };
 
-            let mut data = match File::open(filename_full.clone())
+        match data.read_to_end(&mut buf) {
-            {
+            Ok(stat) => stat,
-                Ok(file) => file,
+            Err(msg) => { return Err(format!("Error reading data file {}: {}", filename_full, msg)) }
-                Err(msg) => { return Err(format!("Error opening data file {}: {}", filename, msg)) }
+        };
-            };
 
-            match data.read_to_end(&mut buf) {
+        out.push_str(&asotr_head.time_s.to_string());
-                Ok(stat) => stat,
+        out.push(';');
-                Err(msg) => { return Err(format!("Error reading data file {}: {}", filename, msg)) }
+        out.push_str(&asotr_head.date);
-            };
+        out.push(';');
+        out.push_str(&asotr_head.time);
+        out.push(';');
 
-
+        if asotr_head.data_type == AsotrDataType::Temp || 
-            out.push_str(&asotr_head.time_s.to_string());
+            asotr_head.data_type == AsotrDataType::TempSet {
-            out.push(';');
-            out.push_str(&asotr_head.date);
-            out.push(';');
-            out.push_str(&asotr_head.time);
-            out.push(';');
-
-            if asotr_head.data_type == AsotrDataType::Temp || 
-                asotr_head.data_type == AsotrDataType::TempSet {
                 ch_f32 = parse_data_f32(buf)?;
                 for elem in ch_f32 { 
                     out.push_str(&elem.to_string());  
                     out.push(';');
                 }
             }
-            else if asotr_head.data_type == AsotrDataType::Pow {
+        else if asotr_head.data_type == AsotrDataType::Pow {
-                ch_u16 = parse_data_u16(buf)?;
+            ch_u16 = parse_data_u16(buf)?;
-                for elem in ch_u16 { 
+            for elem in ch_u16 { 
-                    out.push_str(&elem.to_string());  
+                out.push_str(&elem.to_string());  
-                    out.push(';');
+                out.push(';');
-                }
             }
+        }
 
-            out.remove(out.len() - 1);
+        out.remove(out.len() - 1);
 
-            return Ok(out);
+        return Ok(out);
     }
 
+
 }
 
 
@@ -183,7 +204,7 @@ fn main() {
             Arg::new("file")
             .short('f')
             .long("filename")
-            .help("input ASOTR MVN data (.data01.asotr01(02), .data02.asotr01(02), .data06.asotr01(02))")
+            .help(format!("input ASOTR MVN data ({})", support_dtypes.to_string()))
             .required(true),
             )
         .get_matches();
@@ -193,9 +214,9 @@ fn main() {
         _ => { println!("Error: wrong argument!"); return;  }
     };
 
-    let s = match parse_data(filename.clone()) {
+    let s = match read_data(filename.clone()) {
-    Ok(elem) => elem,
+        Ok(elem) => elem,
-    Err(msg) => { println!("{}", msg); return; }
+        Err(msg) => { println!("{}", msg); return; }
     };
 
     println!("{}", s);