rc-migration-tests/ef-migration/infrastructure/sql-server/full_schemas/extract_views.sh
2025-02-04 22:47:30 +00:00

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#!/bin/bash
# Check if input file is provided
if [ $# -ne 1 ]; then
echo "Usage: $0 <sql_file>"
exit 1
fi
SQL_FILE="$1"
BASE_DIR="sql_objects"
# Create directory structure
mkdir -p "$BASE_DIR/views"
# Function to clean filename
clean_filename() {
# Remove brackets, convert dots and spaces to underscores, remove parentheses
echo "$1" | sed 's/\[\|\]//g' | tr '.' '_' | tr ' ' '_' | sed 's/[()]//g' | sed 's/__*/_/g' | sed 's/_$//'
}
# Function to extract view name
extract_view_name() {
# More flexible pattern for extracting view name
echo "$1" | sed -n 's/.*[Cc][Rr][Ee][Aa][Tt][Ee][[:space:]]*[Vv][Ii][Ee][Ww][[:space:]]*\[\([^]]*\)\]\.\[\([^]]*\)\].*/\1.\2/p'
}
# Function to clean the input line
clean_input_line() {
# Remove any leading/trailing whitespace and normalize spaces
echo "$1" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//' | tr -s ' '
}
# Function to process each CREATE VIEW statement
process_view() {
local current_object="$1"
local view_name="$2"
# Skip if we couldn't extract view name
if [ -z "$view_name" ]; then
echo "Warning: Could not extract view name from statement:"
echo "$current_object" | head -n 1
# Try to extract with a more lenient pattern
view_name=$(echo "$current_object" | head -n 1 | grep -io '\[int\]\.\[[^]]*\]' | head -n 1 | sed 's/\[\|\]//g')
if [ -z "$view_name" ]; then
return
fi
fi
# Clean filename and save
clean_name=$(clean_filename "$view_name")
output_file="$BASE_DIR/views/${clean_name}.sql"
echo "$current_object" > "$output_file"
echo "Created: $output_file (from view: $view_name)"
}
# Main processing function
extract_views() {
local current_object=""
local capture_view=false
local view_name=""
# Read the file line by line
while IFS= read -r line || [ -n "$line" ]; do
# Clean the line
line=$(clean_input_line "$line")
# Skip empty lines at the start of an object
if [ -z "$line" ] && [ -z "$current_object" ]; then
continue
fi
# Check if we've found a CREATE VIEW statement (case insensitive and flexible)
if echo "$line" | grep -iE "[[:space:]]*[Cc][Rr][Ee][Aa][Tt][Ee][[:space:]]+[Vv][Ii][Ee][Ww]" >/dev/null; then
capture_view=true
current_object="$line"
view_name=$(extract_view_name "$line")
if [ -n "$view_name" ]; then
echo "Found view: $view_name"
fi
continue
fi
# If we're capturing a view
if $capture_view; then
# Check if we've reached the end (GO statement)
if echo "$line" | grep -i "^[[:space:]]*GO[[:space:]]*$" >/dev/null; then
# Add GO to the view definition
current_object+=$'\n'"GO"
process_view "$current_object" "$view_name"
capture_view=false
current_object=""
view_name=""
continue
fi
# Add line to current object
current_object+=$'\n'"$line"
fi
done
# Handle case where last view might not have a GO statement
if $capture_view && [ -n "$current_object" ]; then
process_view "$current_object" "$view_name"
fi
}
# Pre-process the file to normalize line endings and remove comments
echo "Extracting views..."
sed 's/--.*$//; /^[[:space:]]*$/d' "$SQL_FILE" | extract_views
echo "Views have been saved in $BASE_DIR/views"
# Count and list files
count=$(ls -1 "$BASE_DIR/views"/*.sql 2>/dev/null | wc -l || echo 0)
echo -e "\nTotal views extracted: $count"
if [ "$count" -gt 0 ]; then
echo -e "\nExtracted views:"
for file in "$BASE_DIR/views"/*.sql; do
if [ -f "$file" ]; then
echo "- $(basename "$file")"
fi
done
fi