support escaped string literal basic string and use GitHub Action instead of TravisCI

- Note that: travis-ci.org will shutdown on June 15th, 2021, and I don't have enough permission to migrate this project to travis-ci.com currently

.travis.yml

@@ -1,25 +0,0 @@
-language: go
-
-install:
-  - go get -d -t -v ./... && go build -v ./...
-
-go:
-  - 1.15.x
-  - 1.16.x
-
-os:
-  - linux
-  - osx
-  - windows
-
-env:
-  jobs:
-    - GOARCH=amd64
-    - GOARCH=386
-
-script:
-  - env GO111MODULE=on go vet ./...
-  - env GO111MODULE=on go test -v -race ./... -coverprofile=coverage.txt -covermode=atomic
-
-after_success:
-  - bash <(curl -s https://codecov.io/bash)

README.md

@@ -1,7 +1,7 @@
 <p align="center"><img width="650" src="./excelize.svg" alt="Excelize logo"></p>
 
 <p align="center">
-    <a href="https://travis-ci.org/360EntSecGroup-Skylar/excelize"><img src="https://travis-ci.org/360EntSecGroup-Skylar/excelize.svg?branch=master" alt="Build Status"></a>
+    <a href="https://github.com/360EntSecGroup-Skylar/excelize/actions/workflows/go.yml"><img src="https://github.com/360EntSecGroup-Skylar/excelize/actions/workflows/go.yml/badge.svg" alt="Build Status"></a>
     <a href="https://codecov.io/gh/360EntSecGroup-Skylar/excelize"><img src="https://codecov.io/gh/360EntSecGroup-Skylar/excelize/branch/master/graph/badge.svg" alt="Code Coverage"></a>
     <a href="https://goreportcard.com/report/github.com/360EntSecGroup-Skylar/excelize"><img src="https://goreportcard.com/badge/github.com/360EntSecGroup-Skylar/excelize" alt="Go Report Card"></a>
     <a href="https://pkg.go.dev/github.com/360EntSecGroup-Skylar/excelize/v2?tab=doc"><img src="https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white" alt="go.dev"></a>
@@ -86,6 +86,10 @@ func main() {
     fmt.Println(cell)
     // Get all the rows in the Sheet1.
     rows, err := f.GetRows("Sheet1")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
     for _, row := range rows {
         for _, colCell := range row {
             fmt.Print(colCell, "\t")

README_zh.md

@@ -1,7 +1,7 @@
 <p align="center"><img width="650" src="./excelize.svg" alt="Excelize logo"></p>
 
 <p align="center">
-    <a href="https://travis-ci.org/360EntSecGroup-Skylar/excelize"><img src="https://travis-ci.org/360EntSecGroup-Skylar/excelize.svg?branch=master" alt="Build Status"></a>
+    <a href="https://github.com/360EntSecGroup-Skylar/excelize/actions/workflows/go.yml"><img src="https://github.com/360EntSecGroup-Skylar/excelize/actions/workflows/go.yml/badge.svg" alt="Build Status"></a>
     <a href="https://codecov.io/gh/360EntSecGroup-Skylar/excelize"><img src="https://codecov.io/gh/360EntSecGroup-Skylar/excelize/branch/master/graph/badge.svg" alt="Code Coverage"></a>
     <a href="https://goreportcard.com/report/github.com/360EntSecGroup-Skylar/excelize"><img src="https://goreportcard.com/badge/github.com/360EntSecGroup-Skylar/excelize" alt="Go Report Card"></a>
     <a href="https://pkg.go.dev/github.com/360EntSecGroup-Skylar/excelize/v2?tab=doc"><img src="https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white" alt="go.dev"></a>
@@ -86,6 +86,10 @@ func main() {
     fmt.Println(cell)
     // 获取 Sheet1 上所有单元格
     rows, err := f.GetRows("Sheet1")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
     for _, row := range rows {
         for _, colCell := range row {
             fmt.Print(colCell, "\t")

chart.go

@@ -739,6 +739,7 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //
 // Set the primary horizontal and vertical axis options by x_axis and y_axis. The properties of x_axis that can be set are:
 //
+//    none
 //    major_grid_lines
 //    minor_grid_lines
 //    tick_label_skip
@@ -748,6 +749,7 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //
 // The properties of y_axis that can be set are:
 //
+//    none
 //    major_grid_lines
 //    minor_grid_lines
 //    major_unit
@@ -755,6 +757,8 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //    maximum
 //    minimum
 //
+// none: Disable axes.
+//
 // major_grid_lines: Specifies major gridlines.
 //
 // minor_grid_lines: Specifies minor gridlines.

lib.go

@@ -18,6 +18,7 @@ import (
 	"encoding/xml"
 	"fmt"
 	"io"
+	"regexp"
 	"strconv"
 	"strings"
 )
@@ -454,6 +455,51 @@ func isNumeric(s string) (bool, int) {
 	return true, p
 }
 
+// bstrUnmarshal parses the binary basic string, this will trim escaped string
+// literal which not permitted in an XML 1.0 document. The basic string
+// variant type can store any valid Unicode character. Unicode characters
+// that cannot be directly represented in XML as defined by the XML 1.0
+// specification, shall be escaped using the Unicode numerical character
+// representation escape character format _xHHHH_, where H represents a
+// hexadecimal character in the character's value. For example: The Unicode
+// character 8 is not permitted in an XML 1.0 document, so it shall be
+// escaped as _x0008_. To store the literal form of an escape sequence, the
+// initial underscore shall itself be escaped (i.e. stored as _x005F_). For
+// example: The string literal _x0008_ would be stored as _x005F_x0008_.
+func bstrUnmarshal(s string) (result string) {
+	m := regexp.MustCompile(`_x[a-zA-Z0-9]{4}_`)
+	escapeExp := regexp.MustCompile(`x[a-zA-Z0-9]{4}_`)
+	matches := m.FindAllStringSubmatchIndex(s, -1)
+	var cursor int
+	for _, match := range matches {
+		result += s[cursor:match[0]]
+		if s[match[0]:match[1]] == "_x005F_" {
+			if len(s) > match[1]+6 && !escapeExp.MatchString(s[match[1]:match[1]+6]) {
+				result += s[match[0]:match[1]]
+				cursor = match[1]
+				continue
+			}
+			if len(s) > match[1]+5 && s[match[1]:match[1]+5] == "x005F" {
+				result += "_"
+				cursor = match[1]
+				continue
+			}
+			if escapeExp.MatchString(s[match[0]:match[1]]) {
+				result += "_"
+				cursor = match[1]
+				continue
+			}
+		}
+		if escapeExp.MatchString(s[match[0]:match[1]]) {
+			cursor = match[1]
+		}
+	}
+	if cursor < len(s) {
+		result += s[cursor:]
+	}
+	return result
+}
+
 // Stack defined an abstract data type that serves as a collection of elements.
 type Stack struct {
 	list *list.List

lib_test.go

@@ -234,3 +234,22 @@ func TestGenXMLNamespace(t *testing.T) {
 		{Name: xml.Name{Space: NameSpaceXML, Local: "space"}, Value: "preserve"},
 	}), `xml:space="preserve">`)
 }
+
+func TestBstrUnmarshal(t *testing.T) {
+	bstrs := map[string]string{
+		"*":                           "*",
+		"*_x0008_":                    "*",
+		"_x0008_*":                    "*",
+		"*_x0008_*":                   "**",
+		"*_x005F__x0008_*":            "*_x005F_*",
+		"*_x005F_x0001_*":             "*_x0001_*",
+		"*_x005F_x005F_x005F_x0006_*": "*_x005F_x0006_*",
+		"_x005F__x0008_******":        "_x005F_******",
+		"******_x005F__x0008_":        "******_x005F_",
+		"******_x005F__x0008_******":  "******_x005F_******",
+		"*_x005F_x005F__x0008_*":      "*_x005F_*",
+	}
+	for bstr, expected := range bstrs {
+		assert.Equal(t, expected, bstrUnmarshal(bstr))
+	}
+}

xmlSharedStrings.go

@@ -53,10 +53,10 @@ func (x xlsxSI) String() string {
 				rows.WriteString(s.T.Val)
 			}
 		}
-		return rows.String()
+		return bstrUnmarshal(rows.String())
 	}
 	if x.T != nil {
-		return x.T.Val
+		return bstrUnmarshal(x.T.Val)
 	}
 	return ""
 }