@@ -11,11 +11,11 @@ license below), you may download the binary.

 Here are the SHA-256 checksums for the binaries:

-    f209b32d6fcc07bb5788789bf38419b80ceace8e37b12fd395adfabce1e861f1  csv2xlsx_386.exe

-    76be18318b797742985b4547ddb502688b014bb13f19a1b5d9e886869446e33e  csv2xlsx_amd64.exe

-    97fce8d687a73c770dd5463c01ee126bc82fafb1da5fd49dd4751dce06f2cebd  csv2xlsx_linux_386

-    a931741383cb68a10bad6a107b0956d5f9e1e23eecb4c11c399bb463307c77bc  csv2xlsx_linux_amd64

-    7fbfce2072fedb66fe1a26b1e28399e3ef3b68fc3179778f1c59230fecbda904  csv2xlsx_osx

+    9cd013ac244c0d364302da1eab724ea93831f6088188bcaaae08545f00a4582a  csv2xlsx_386.exe

+    535c3937447497bd0769296d434c809b41e1ead7bc463f560888ec51cfb95794  csv2xlsx_amd64.exe

+    d491329c16f44d82c6d50bb4afa74bd704f25ade7e93b28d0ec0b747648c9a6e  csv2xlsx_linux_386

+    cfa63a9eb6ab4d9c418afe95cf54524b32611a01d970e95ed57831b1368406f1  csv2xlsx_linux_amd64

+    daa9ff8f2ccb49b6ccf4fd7d7b600011a8bd4ba9fe1b3870ce15dcbbe6fa1092  csv2xlsx_osx

 ### Usage

@@ -41,13 +41,18 @@ Please see below for a list of command line options.

       encoding string to use for the CSV file, case-insensitive (defaults to "utf-8")

   -exceldateformat string

     	Excel format for date cells (default as in Excel)

-  -h	display usage information

+  -filemask

+        bulk mode, specify a file mask here (e.g. "/use/docs/datalib/2018*.csv")

+        make sure to quote the filespace to prevent shell globbing

+  -h	

   -help

     	display usage information

   -infile string

     	full pathname of input file (CSV file)

   -outfile string

     	full pathname of output file (.xlsx file)

+  -outdir 

+        path to a target directory for the xlsx files (must exist and be writable)      

   -rows string

     	list of line numbers to use (1,2,8 or 1,3-14,28)

   -sheet string

@@ -143,9 +148,12 @@ I am still amazed what you can accomplish within less than 200 lines of code in

     2017-12-21 0.2

                 Added option --encoding

-    2017-06-20 0.3

+    2018-06-20 0.3

                 Added better version of ParseFloat to allow scientific number notation

+    2018-06-21 0.3.1

+                Added -filemask option to allow bulk processing

+

 ### License

@@ -24,6 +24,8 @@ var (

 	parmSheet           string

 	parmInFile          string

 	parmOutFile         string

+	parmOutDir          string

+	parmFileMask        string

 	parmEncoding        string

 	parmColSep          rune

 	parmDateFormat      string

@@ -133,6 +135,8 @@ func parseRangeString(rangeStr string) map[int]string {

 func parseCommandLine() {

 	flag.StringVar(&parmInFile, "infile", "", "full pathname of input file (CSV file)")

 	flag.StringVar(&parmOutFile, "outfile", "", "full pathname of output file (.xlsx file)")

+	flag.StringVar(&parmFileMask, "filemask", "", "file mask for bulk processing (overwrites -infile/-outfile)")

+	flag.StringVar(&parmOutDir, "outdir", "", "target directory for the .xlsx file (not to be used with outfile)")

 	flag.StringVar(&parmDateFormat, "dateformat", "2006-01-02", "format for CSV date cells (default YYYY-MM-DD)")

 	flag.StringVar(&parmExcelDateFormat, "exceldateformat", "", "Excel format for date cells (default as in Excel)")

 	flag.StringVar(&parmCols, "columns", "", "column range to use (see below)")

@@ -175,10 +179,18 @@ func parseCommandLine() {

 		`)

 		os.Exit(1)

 	}

-	if _, err := os.Stat(parmInFile); os.IsNotExist(err) {

-		fmt.Println("Input file does not exist, exiting.")

+

+	if parmOutFile != "" && parmOutDir != "" {

+		fmt.Println("Cannot use -outfile and -outdir together (-outdir to be used with -filemask), exiting.")

 		os.Exit(1)

 	}

+

+	if parmFileMask == "" {

+		if _, err := os.Stat(parmInFile); os.IsNotExist(err) {

+			fmt.Println("Input file does not exist, exiting.")

+			os.Exit(1)

+		}

+	}

 }

 // loadInputFile reads the complete input file into a matrix of strings.

@@ -407,11 +419,36 @@ func processDataColumns(excelRow *xlsx.Row, rownum int, csvLine []string) {

 	}

 }

-// the main entry function

-func main() {

-	// preflight stuff

-	parseCommandLine()

-	rows := loadInputFile(parmInFile)

+// getInputFiles retrieves a list of input files for a given filespec

+// returns a slice of strings or aborts the program on error

+func getInputFiles(inFileSpec string) []string {

+	files, err := filepath.Glob(inFileSpec)

+	if err != nil {

+		fmt.Println(err)

+		os.Exit(1)

+	}

+	return files

+}

+

+// buildOutputName generates the .xlsx file name for a given input file

+// if the user specified the -outdir option, use this directory as target path

+// return a string with the target file name

+func buildOutputName(infile string) string {

+	outfile := strings.TrimSuffix(infile, filepath.Ext(infile)) + ".xlsx"

+	if parmOutDir != "" {

+		if _, err := os.Stat(parmOutDir); err == nil {

+			outfile = filepath.Join(parmOutDir, filepath.Base(outfile))

+		} else {

+			fmt.Println(fmt.Sprintf("Output directory %q does not exist, exiting.", parmOutDir))

+			os.Exit(1)

+		}

+	}

+	return outfile

+}

+

+// convertFile does the conversion from CSV to Excel .xslx

+func convertFile(infile, outfile string) {

+	rows := loadInputFile(infile)

 	setRangeInformation(len(rows), len(rows[0]))

 	// excel stuff, create file, add worksheet, define a right-aligned style

@@ -429,5 +466,33 @@ func main() {

 			processDataColumns(excelRow, rownum, line)

 		}

 	}

-	workBook.Save(parmOutFile)

+	err := workBook.Save(outfile)

+	if err != nil {

+		fmt.Println(err)

+		os.Exit(1)

+	}

+}

+

+// the main entry function

+func main() {

+	// preflight stuff

+	var fileList []string

+	parseCommandLine()

+

+	// either glob the file mask or retrieve the single input file

+	// this way we can just iterate over the slice (and maybe later

+	// add an option for a specified list of files)

+	if parmFileMask != "" {

+		fmt.Println("Found -filemask parameter, running in bulk mode")

+		fileList = getInputFiles(parmFileMask)

+	} else {

+		fileList = getInputFiles(parmInFile)

+	}

+

+	// iterate over list of files to process and convert them

+	for _, infile := range fileList {

+		outfile := buildOutputName(infile)

+		fmt.Println("Converting", infile, "=>", outfile)

+		convertFile(infile, outfile)

+	}

 }