Implements all the other signal parsing blocks.

src/headproc.rs

@@ -1,4 +1,4 @@
-use std::{u64, vec};
+use std::{collections::HashMap, u64, vec};
 
 use crate::SignalFormat;
 
@@ -134,6 +134,14 @@ impl Record {
     }
 }
 
+#[derive(Debug, Eq, Hash, PartialEq)]
+enum AdcBlockKeys {
+    Gain,
+    Baseline,
+    Units
+}
+
+
 #[derive(Debug, Clone)]
 struct SignalSpec {
     filename: String,
@@ -142,12 +150,12 @@ struct SignalSpec {
     skew: Option<u64>,
     offset: Option<u64>,
     adc_gain: Option<f64>,
-    baseline: Option<u64>,
+    baseline: Option<i64>,
     units: Option<String>,
     adc_resolution: Option<u64>,
-    adc_zero: Option<u64>,
-    initial_val: Option<u64>,
-    checksum: Option<u64>,
+    adc_zero: i64,
+    initial_val: Option<i64>,
+    checksum: Option<i64>,
     blocksize: Option<u64>,
     desc: Option<String>
 }
@@ -170,15 +178,15 @@ impl SignalSpec {
         let samples_frame: Option<u64> = None;
         let skew: Option<u64> = None;
         let offset: Option<u64> = None;
-        let adc_gain: Option<f64> = None;
-        let baseline: Option<u64> = None;
-        let units: Option<String> = None;
-        let adc_resolution: Option<u64> = None;
-        let adc_zero: Option<u64> = None;
-        let initial_val: Option<u64> = None;
-        let checksum: Option<u64> = None;
-        let blocksize: Option<u64> = None;
-        let desc: Option<String> = None;
+        let mut adc_gain: Option<f64> = None;
+        let mut baseline: Option<i64> = None;
+        let mut units: Option<String> = None;
+        let mut adc_resolution: Option<u64> = None;
+        let mut adc_zero:i64 = 0;
+        let mut initial_val: Option<i64> = None;
+        let mut checksum: Option<i64> = None;
+        let mut blocksize: Option<u64> = None;
+        let mut desc: Option<String> = None;
 
         // TODO: implement samplesperframe, skew, and offset
         match args[1].parse::<u64>() {
@@ -196,13 +204,142 @@ impl SignalSpec {
             }
 
             {
-                let bracket_split: Vec<&str> = args[2].split("(").collect();
+                let mut results: HashMap<AdcBlockKeys, String> = HashMap::new();
+                let mut buffer: String = String::new();
+                let mut found_baseline = false;
+                let mut found_units = false;
+
+                // Parse through all the characters and get the individual parts
+                for character in args[2].chars() {
+                    loop {
+                        if !found_baseline && !found_units && character == '(' {
+                            found_baseline = true;
+                            results.insert(AdcBlockKeys::Gain, buffer);
+                            buffer = String::new();
+                            break;
+                        }
+                        else if found_baseline && character == ')' {
+                            results.insert(AdcBlockKeys::Baseline, buffer);
+                            buffer = String::new();
+                            break;
+                        }
+                        else if !found_units && character == '/' {
+                            found_units = true;
+                            if !found_baseline {
+                                results.insert(AdcBlockKeys::Gain, buffer);
+                            }
+                            buffer = String::new();
+                            break;
+                        }
+                        buffer.push(character);
+                        break;
+                    }
+                }
+                if found_units {
+                    results.insert(AdcBlockKeys::Units, buffer);
                 }
                 
+                // Try and get the actual values out of the results
+                match results.get(&AdcBlockKeys::Gain) {
+                    Some(value ) => {
+                        match value.parse::<f64>() {
+                            Ok(parsed) => {
+                                adc_gain = Some(parsed);
+                            },
+                            Err(_) => {
+                                return Err("error: Signal contains adc gain block with invalid entry");
+                            }
+                        }
+                    },
+                    None => {
+                        return Err("error: Signal contains adc gain block but the block is empty.");
+                    }
+                }
+
+                match results.get(&AdcBlockKeys::Baseline) {
+                    Some(value) => {
+                        match value.parse::<i64>() {
+                            Ok(parsed) => {
+                                baseline = Some(parsed);
+                            },
+                            Err(_) => {
+                                return Err("error: Unable to parse baseline from signal");
+                            }
+                        }
+                    },
+                    None => {}
+                }
+                match results.get(&AdcBlockKeys::Units) {
+                    Some(value) => {
+                        units = Some(value.clone());
+                    },
+                    None => {}
+                }
+            }
             
             if args.len() <= 3 {
-
+                break;
             }
+            match args[3].parse::<u64>() {
+                Ok(value) => {
+                    adc_resolution = Some(value);
+                },
+                Err(_) => {
+                    return Err("error: unable to parse resolution from signal");
+                } 
+            }
+
+            if args.len() <= 4 {
+                break;
+            }
+            match args[4].parse::<i64>() {
+                Ok(value) => {
+                    adc_zero = value;
+                },
+                Err(_) => {
+                    adc_zero = 0; // Standard: If this field is missing, a value of zero is assumed.
+                } 
+            }
+
+            if args.len() <= 5 {
+                break;
+            }
+            match args[5].parse::<i64>() {
+                Ok(value) => {
+                    initial_val = Some(value);
+                },
+                Err(_) => {} // Standard: If this field is missing, adc_zero value is presumed.
+                // We do this on the data parsing part.
+            }
+
+            if args.len() <= 6 {
+                break;
+            }
+            match args[6].parse::<i64>() {
+                Ok(value) => {
+                   checksum = Some(value);
+                },
+                Err(_) => {
+                    return Err("error: unable to parse checksum from signal");
+                } 
+            }
+
+            if args.len() <= 7 {
+                break;
+            }
+            match args[7].parse::<u64>() {
+                Ok(value) => {
+                    blocksize = Some(value);
+                },
+                Err(_) => {
+                    return Err("error: unable to parse block size from signal");
+                } 
+            }
+
+            if args.len() <= 8 {
+                break;
+            }
+            desc = Some(args[8].to_string());
 
             break;
         }