Script to set background mixing frequency variables

scripts/set_bg_mix_freq.sh

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+#!/bin/bash
+set -Euo pipefail
+trap 's=$?; echo "$0: Error on line "$LINENO": $BASH_COMMAND"; exit $s' ERR
+IFS=$'\n\t'
+
+# Set url for frequency tables
+EGAS_URL=https://raw.githubusercontent.com/eic/simulation_campaign_datasets/${DETECTOR_VERSION}/config_data/egas_freq.csv
+HGAS_URL=https://raw.githubusercontent.com/eic/simulation_campaign_datasets/${DETECTOR_VERSION}/config_data/hgas_freq.csv
+MINBIAS_URL=https://raw.githubusercontent.com/eic/simulation_campaign_datasets/${DETECTOR_VERSION}/config_data/minbias_freq.csv
+
+# Download tables
+EGAS_TABLE=$( curl -L ${EGAS_URL} )
+HGAS_TABLE=$( curl -L ${HGAS_URL} )
+MINBIAS_TABLE=$( curl -L ${MINBIAS_URL} )
+
+# Initialize associative arrays (maps) for each type of background
+declare -A EGAS_MAP
+declare -A HGAS_MAP
+declare -A MINBIAS_MAP
+
+# Function to process each line into a map
+process_lines() {
+    local data="$1"
+    local -n map_ref="$2"
+    local index=0
+
+    while IFS=',' read -r key value; do
+        # Adding the line to the map with a simple index as the key
+        map_ref[$key]="$value"
+    done <<< "$data"
+}
+
+# Process the downloaded data and populate the maps
+process_lines "$EGAS_TABLE" EGAS_MAP
+process_lines "$HGAS_TABLE" HGAS_MAP
+process_lines "$MINBIAS_TABLE" MINBIAS_MAP
+
+export BG1_FREQ=${EGAS_MAP[${EBEAM}x${PBEAM}_${EVAC}]}
+export BG2_FREQ=${HGAS_MAP[${EBEAM}x${PBEAM}_${HVAC}]}
+export BG3_FREQ=${MINBIAS_MAP[${EBEAM}x${PBEAM}]}
+
+echo "Electron Beam Gas Frequency:" $BG1_FREQ
+echo "Hadron Beam Gas Frequency:" $BG2_FREQ
+echo "Minbias Backgrounds Frequency:" $BG3_FREQ