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bug 56781,60246: fix named range validation to match valid name rules per Excel docs

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1764854 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Javen O'Neal 2016-10-14 10:11:23 +00:00
parent 999c6499ec
commit 1e5dc11721
3 changed files with 123 additions and 29 deletions
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58
src/java/org/apache/poi/hssf/usermodel/HSSFName.java
View File

@ -21,9 +21,11 @@ import org.apache.poi.hssf.model.HSSFFormulaParser;
import org.apache.poi.hssf.model.InternalWorkbook;
import org.apache.poi.hssf.record.NameCommentRecord;
import org.apache.poi.hssf.record.NameRecord;
import org.apache.poi.ss.SpreadsheetVersion;
import org.apache.poi.ss.formula.FormulaType;
import org.apache.poi.ss.formula.ptg.Ptg;
import org.apache.poi.ss.usermodel.Name;
import org.apache.poi.ss.util.CellReference;
/**
* High Level Representation of a 'defined name' which could be a 'built-in' name,
@ -155,36 +157,70 @@ public final class HSSFName implements Name {
}
}
/**
* https://support.office.com/en-us/article/Define-and-use-names-in-formulas-4D0F13AC-53B7-422E-AFD2-ABD7FF379C64#bmsyntax_rules_for_names
*
* Valid characters:
* First character: { letter | underscore | backslash }
* Remaining characters: { letter | number | period | underscore }
*
* Cell shorthand: cannot be { "C" | "c" | "R" | "r" }
*
* Cell references disallowed: cannot be a cell reference $A$1 or R1C1
*
* Spaces are not valid (follows from valid characters above)
*
* Name length: (XSSF-specific?) 255 characters maximum
*
* Case sensitivity: all names are case-insensitive
*
* Uniqueness: must be unique (for names with the same scope)
*
* @param name
*/
private static void validateName(String name) {
/* equivalent to:
Pattern.compile(
"[\\p{IsAlphabetic}_]" +
"[\\p{IsAlphabetic}0-9_\\\\]*",
Pattern.CASE_INSENSITIVE).matcher(name).matches();
\p{IsAlphabetic} doesn't work on Java 6, and other regex-based character classes don't work on unicode
thus we are stuck with Character.isLetter (for now).
*/
if (name.length() == 0) {
throw new IllegalArgumentException("Name cannot be blank");
}
if (name.length() > 255) {
throw new IllegalArgumentException("Invalid name: '"+name+"': cannot exceed 255 characters in length");
}
if (name.equalsIgnoreCase("R") || name.equalsIgnoreCase("C")) {
throw new IllegalArgumentException("Invalid name: '"+name+"': cannot be special shorthand R or C");
}
// is first character valid?
char c = name.charAt(0);
String allowedSymbols = "_";
String allowedSymbols = "_\\";
boolean characterIsValid = (Character.isLetter(c) || allowedSymbols.indexOf(c) != -1);
if (!characterIsValid) {
throw new IllegalArgumentException("Invalid name: '"+name+"': first character must be underscore or a letter");
}
// are all other characters valid?
allowedSymbols = "_\\"; //backslashes needed for unicode escape
allowedSymbols = "_.\\"; //backslashes needed for unicode escape
for (final char ch : name.toCharArray()) {
characterIsValid = (Character.isLetterOrDigit(ch) || allowedSymbols.indexOf(ch) != -1);
if (!characterIsValid) {
throw new IllegalArgumentException("Invalid name: '"+name+"'");
throw new IllegalArgumentException("Invalid name: '"+name+"': name must be letter, digit, period, or underscore");
}
}
// Is the name a valid $A$1 cell reference
// Because $, :, and ! are disallowed characters, A1-style references become just a letter-number combination
if (name.matches("[A-Za-z]+\\d+")) {
String col = name.replaceAll("\\d", "");
String row = name.replaceAll("[A-Za-z]", "");
if (CellReference.cellReferenceIsWithinRange(col, row, SpreadsheetVersion.EXCEL97)) {
throw new IllegalArgumentException("Invalid name: '"+name+"': cannot be $A$1-style cell reference");
}
}
// Is the name a valid R1C1 cell reference?
if (name.matches("[Rr]\\d+[Cc]\\d+")) {
throw new IllegalArgumentException("Invalid name: '"+name+"': cannot be R1C1-style cell reference");
}
}
public void setRefersToFormula(String formulaText) {

58
src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFName.java
View File

@ -16,12 +16,14 @@
==================================================================== */
package org.apache.poi.xssf.usermodel;
import org.apache.poi.ss.SpreadsheetVersion;
import org.apache.poi.ss.formula.ptg.Ptg;
import org.apache.poi.ss.formula.FormulaParser;
import org.apache.poi.ss.formula.FormulaType;
import org.apache.poi.ss.usermodel.Name;
import org.apache.poi.ss.util.AreaReference;
import org.apache.poi.ss.util.CellReference;
import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTDefinedName;
/**
@ -345,35 +347,69 @@ public final class XSSFName implements Name {
return _ctName.toString().equals(cf.getCTName().toString());
}
/**
* https://support.office.com/en-us/article/Define-and-use-names-in-formulas-4D0F13AC-53B7-422E-AFD2-ABD7FF379C64#bmsyntax_rules_for_names
*
* Valid characters:
* First character: { letter | underscore | backslash }
* Remaining characters: { letter | number | period | underscore }
*
* Cell shorthand: cannot be { "C" | "c" | "R" | "r" }
*
* Cell references disallowed: cannot be a cell reference $A$1 or R1C1
*
* Spaces are not valid (follows from valid characters above)
*
* Name length: (XSSF-specific?) 255 characters maximum
*
* Case sensitivity: all names are case-insensitive
*
* Uniqueness: must be unique (for names with the same scope)
*
* @param name
*/
private static void validateName(String name) {
/* equivalent to:
Pattern.compile(
"[\\p{IsAlphabetic}_]" +
"[\\p{IsAlphabetic}0-9_\\\\]*",
Pattern.CASE_INSENSITIVE).matcher(name).matches();
\p{IsAlphabetic} doesn't work on Java 6, and other regex-based character classes don't work on unicode
thus we are stuck with Character.isLetter (for now).
*/
if (name.length() == 0) {
throw new IllegalArgumentException("Name cannot be blank");
}
if (name.length() > 255) {
throw new IllegalArgumentException("Invalid name: '"+name+"': cannot exceed 255 characters in length");
}
if (name.equalsIgnoreCase("R") || name.equalsIgnoreCase("C")) {
throw new IllegalArgumentException("Invalid name: '"+name+"': cannot be special shorthand R or C");
}
// is first character valid?
char c = name.charAt(0);
String allowedSymbols = "_";
String allowedSymbols = "_\\";
boolean characterIsValid = (Character.isLetter(c) || allowedSymbols.indexOf(c) != -1);
if (!characterIsValid) {
throw new IllegalArgumentException("Invalid name: '"+name+"': first character must be underscore or a letter");
}
// are all other characters valid?
allowedSymbols = "_\\"; //backslashes needed for unicode escape
allowedSymbols = "_.\\"; //backslashes needed for unicode escape
for (final char ch : name.toCharArray()) {
characterIsValid = (Character.isLetterOrDigit(ch) || allowedSymbols.indexOf(ch) != -1);
if (!characterIsValid) {
throw new IllegalArgumentException("Invalid name: '"+name+"'");
throw new IllegalArgumentException("Invalid name: '"+name+"': name must be letter, digit, period, or underscore");
}
}
// Is the name a valid $A$1 cell reference
// Because $, :, and ! are disallowed characters, A1-style references become just a letter-number combination
if (name.matches("[A-Za-z]+\\d+")) {
String col = name.replaceAll("\\d", "");
String row = name.replaceAll("[A-Za-z]", "");
if (CellReference.cellReferenceIsWithinRange(col, row, SpreadsheetVersion.EXCEL97)) {
throw new IllegalArgumentException("Invalid name: '"+name+"': cannot be $A$1-style cell reference");
}
}
// Is the name a valid R1C1 cell reference?
if (name.matches("[Rr]\\d+[Cc]\\d+")) {
throw new IllegalArgumentException("Invalid name: '"+name+"': cannot be R1C1-style cell reference");
}
}
}

34
src/testcases/org/apache/poi/ss/usermodel/BaseTestNamedRange.java
View File

@ -673,22 +673,33 @@ public abstract class BaseTestNamedRange {
wb.close();
}
// bug 56781: name validation only checks for first character's validity and presence of spaces
// bug 60246: validate name does not allow DOT in named ranges
@Test
public void test56781() throws IOException {
public void testValid() throws IOException {
Workbook wb = _testDataProvider.createWorkbook();
Name name = wb.createName();
for (String valid : Arrays.asList(
"Hello",
"number1",
"_underscore"
//"p.e.r.o.i.d.s",
//"\\Backslash",
//"Backslash\\"
"_underscore",
"underscore_",
"p.e.r.o.i.d.s",
"\\Backslash",
"Backslash\\"
)) {
name.setNameName(valid);
}
wb.close();
}
@Test
public void testInvalid() throws IOException {
Workbook wb = _testDataProvider.createWorkbook();
Name name = wb.createName();
try {
name.setNameName("");
fail("expected exception: (blank)");
@ -704,7 +715,18 @@ public abstract class BaseTestNamedRange {
"Colon:",
"A-Minus",
"A+Plus",
"Dollar$")) {
"Dollar$",
".periodAtBeginning",
"R", //special shorthand
"C", //special shorthand
"A1", // A1-style cell reference
"R1C1", // R1C1-style cell reference
"NameThatIsLongerThan255Characters.NameThatIsLongerThan255Characters.NameThatIsLongerThan255Characters..."+
"NameThatIsLongerThan255Characters.NameThatIsLongerThan255Characters.NameThatIsLongerThan255Characters..."+
"NameThatIsLongerThan255Characters.NameThatIsLongerThan255Characters.NameThatIsLongerThan255Characters..."+
"NameThatIsLongerThan255Characters.NameThatIsLongerThan255Characters.NameThatIsLongerThan255Characters..."+
"NameThatIsLongerThan255Characters.NameThatIsLongerThan255Characters.NameThatIsLongerThan255Characters"
)) {
try {
name.setNameName(invalid);
fail("expected exception: " + invalid);