From a9d3ee28693adfe920b3cd047f52862d8a79a00e Mon Sep 17 00:00:00 2001
From: Ri Xu <xuri.me@gmail.com>
Date: Tue, 30 Aug 2016 11:51:31 +0800
Subject: Init commit.

---
 lib.go | 132 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 lib.go

(limited to 'lib.go')

diff --git a/lib.go b/lib.go
new file mode 100644
index 0000000..e3d7a4f
--- /dev/null
+++ b/lib.go
@@ -0,0 +1,132 @@
+package excelize
+
+import (
+	"archive/zip"
+	"bytes"
+	"io"
+	"log"
+	"math"
+	"os"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+// ReadZip() takes a pointer to a zip.ReadCloser and returns a
+// xlsx.File struct populated with its contents.  In most cases
+// ReadZip is not used directly, but is called internally by OpenFile.
+func ReadZip(f *zip.ReadCloser) ([]FileList, error) {
+	defer f.Close()
+	return ReadZipReader(&f.Reader)
+}
+
+// ReadZipReader() can be used to read an XLSX in memory without
+// touching the filesystem.
+func ReadZipReader(r *zip.Reader) ([]FileList, error) {
+	var fileList []FileList
+	for _, v := range r.File {
+		singleFile := FileList{
+			Key:   v.Name,
+			Value: readFile(v),
+		}
+		fileList = append(fileList, singleFile)
+	}
+	return fileList, nil
+}
+
+// Read XML content as string and replace drawing property in XML namespace of sheet
+func readXml(files []FileList, name string) string {
+	for _, file := range files {
+		if file.Key == name {
+			return strings.Replace(file.Value, "<drawing r:id=", "<drawing rid=", -1)
+		}
+	}
+	return ``
+}
+
+// Update given file content in file list of XLSX
+func saveFileList(files []FileList, name string, content string) []FileList {
+	for k, v := range files {
+		if v.Key == name {
+			files = files[:k+copy(files[k:], files[k+1:])]
+			files = append(files, FileList{
+				Key:   name,
+				Value: XMLHeader + content,
+			})
+			return files
+		}
+	}
+	files = append(files, FileList{
+		Key:   name,
+		Value: XMLHeader + content,
+	})
+	return files
+}
+
+// Read file content as string in a archive file
+func readFile(file *zip.File) string {
+	rc, err := file.Open()
+	if err != nil {
+		log.Fatal(err)
+	}
+	buff := bytes.NewBuffer(nil)
+	io.Copy(buff, rc)
+	rc.Close()
+	return string(buff.Bytes())
+}
+
+// Convert integer to Excel sheet column title
+func toAlphaString(value int) string {
+	if value < 0 {
+		return ``
+	}
+	var ans string
+	i := value
+	for i > 0 {
+		ans = string((i-1)%26+65) + ans
+		i = (i - 1) / 26
+	}
+	return ans
+}
+
+// Convert Excel sheet column title to int
+func titleToNumber(s string) int {
+	weight := 0.0
+	sum := 0
+	for i := len(s) - 1; i >= 0; i-- {
+		sum = sum + (int(s[i])-int('A')+1)*int(math.Pow(26, weight))
+		weight++
+	}
+	return sum - 1
+}
+
+// Check the file exists
+func pathExist(_path string) bool {
+	_, err := os.Stat(_path)
+	if err != nil && os.IsNotExist(err) {
+		return false
+	}
+	return true
+}
+
+// Split Excel sheet column title to string and integer, return XAxis
+func getColIndex(axis string) string {
+	r, err := regexp.Compile(`[^\D]`)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return string(r.ReplaceAll([]byte(axis), []byte("")))
+}
+
+// Split Excel sheet column title to string and integer, return YAxis
+func getRowIndex(axis string) int {
+	r, err := regexp.Compile(`[\D]`)
+	if err != nil {
+		log.Fatal(err)
+	}
+	row, err := strconv.Atoi(string(r.ReplaceAll([]byte(axis), []byte(""))))
+	if err != nil {
+		log.Fatal(err)
+	}
+	return row
+}
-- 
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