Merge pull request 'feature/excel' (#2) from feature/excel into master

Reviewed-on: #2

excel/read.go

@@ -100,3 +100,75 @@ func (r *Read) GetAllDataToMap(fieldList []string) (map[string][]map[string]stri
 	// 格式化数据
 	return formatResult, nil
 }
+
+// ExtractAssignCol 抽取指定的列，并返回list数据, 列的计数从 0 开始
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 4:53 下午 2021/11/19
+func (r *Read) ExtractAssignCol(colIndexList []int) (map[string][][]string, error) {
+	var (
+		allData      map[string][][]string
+		err          error
+		formatResult map[string][][]string
+	)
+	if allData, err = r.GetAllData(); nil != err {
+		return nil, err
+	}
+	formatResult = make(map[string][][]string)
+	for sheetName, sheetData := range allData {
+		formatResult[sheetName] = make([][]string, 0)
+		for _, lineData := range sheetData {
+			tmpData := make([]string, 0)
+			for _, colIdx := range colIndexList {
+				if len(lineData) <= colIdx {
+					// 索引越界,默认空值
+					tmpData = append(tmpData, "")
+					continue
+				}
+				tmpData = append(tmpData, lineData[colIdx])
+			}
+			formatResult[sheetName] = append(formatResult[sheetName], tmpData)
+		}
+	}
+	return formatResult, nil
+}
+
+// ExtractAssignColToMap 抽取指定的列，并返回map数据
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 4:53 下午 2021/11/19
+func (r *Read) ExtractAssignColToMap(ruleTable map[int]string) (map[string][]map[string]string, error) {
+	var (
+		allData      map[string][][]string
+		err          error
+		formatResult map[string][]map[string]string
+	)
+	formatResult = make(map[string][]map[string]string)
+	if allData, err = r.GetAllData(); nil != err {
+		return nil, err
+	}
+	for sheetName, sheetData := range allData {
+		formatResult[sheetName] = make([]map[string]string, 0)
+		for _, lineData := range sheetData {
+			tmpResult := make(map[string]string)
+			for idx, colData := range lineData {
+				colName, exist := ruleTable[idx]
+				if !exist {
+					// 当前字段不需要提取
+					continue
+				}
+				tmpResult[colName] = colData
+			}
+			for _, colName := range ruleTable {
+				if _, exist := tmpResult[colName]; !exist {
+					tmpResult[colName] = ""
+				}
+			}
+			formatResult[sheetName] = append(formatResult[sheetName], tmpResult)
+		}
+	}
+	// 格式化数据
+	return formatResult, nil
+}