初回コミット

extract_categories.js

@@ -0,0 +1,87 @@
+const fs = require('fs');
+const path = require('path');
+
+// For Node.js environments that support TextDecoder
+// Using iconv-lite or manual Shift-JIS decoding
+const sjis = require('encoding');
+
+const csvDir = './MoneyForwardエクスポート';
+
+const files = fs.readdirSync(csvDir).filter(f => f.endsWith('.csv'));
+
+const categories = new Map(); // key: "大項目|中項目", value: {institutions: Set, hasNonTransfer: boolean}
+const institutions = new Set();
+
+files.forEach(file => {
+  const filePath = path.join(csvDir, file);
+  const buffer = fs.readFileSync(filePath);
+  
+  // Try to decode from Shift-JIS
+  let content;
+  try {
+    // Using Node.js built-in Buffer (assumes UTF-8, may fail)
+    content = buffer.toString('utf8');
+  } catch (e) {
+    console.error(`Could not decode file: ${file}`);
+    return;
+  }
+  
+  const lines = content.split('\n');
+  
+  // Parse header
+  const headerLine = lines[0];
+  const headers = headerLine.split(',');
+  
+  const indices = {
+    大項目: headers.indexOf('大項目'),
+    中項目: headers.indexOf('中項目'),
+    保有金融機関: headers.indexOf('保有金融機関'),
+    振替: headers.indexOf('振替')
+  };
+  
+  console.log(`File: ${file}`);
+  console.log(`Headers found:`, indices);
+  
+  // Parse data rows
+  for (let i = 1; i < lines.length; i++) {
+    const line = lines[i].trim();
+    if (!line) continue;
+    
+    const fields = line.split(',');
+    if (fields.length < Math.max(...Object.values(indices)) + 1) continue;
+    
+    const category = fields[indices.大項目];
+    const subCategory = fields[indices.中項目];
+    const institution = fields[indices.保有金融機関];
+    const transfer = fields[indices.振替];
+    
+    if (!category || !subCategory) continue;
+    
+    const key = `${category}|${subCategory}`;
+    
+    if (!categories.has(key)) {
+      categories.set(key, { institutions: new Set(), hasNonTransfer: false });
+    }
+    
+    categories.get(key).institutions.add(institution);
+    if (transfer === '0') {
+      categories.get(key).hasNonTransfer = true;
+    }
+    
+    institutions.add(institution);
+  }
+});
+
+console.log('\n=== UNIQUE CATEGORIES ===\n');
+console.log('大項目 | 中項目 | Institutions | Has Non-Transfer');
+console.log('-'.repeat(80));
+
+const sortedCategories = Array.from(categories.entries()).sort();
+sortedCategories.forEach(([key, data]) => {
+  const [大項目, 中項目] = key.split('|');
+  const instList = Array.from(data.institutions).join('; ');
+  console.log(`${大項目} | ${中項目} | ${instList} | ${data.hasNonTransfer ? 'Yes' : 'No'}`);
+});
+
+console.log('\n=== INSTITUTIONS ===\n');
+Array.from(institutions).sort().forEach(inst => console.log(inst));