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Chapter 10: Regular expressions
Book Examples
Example 10-1. A simple type with a pattern <xsd:simpleType name="ProdNumType">
<xsd:restriction base="xsd:string">
<xsd:pattern value="\d{3}-[A-Z]{2}|\d{7}"/>
</xsd:restriction>
</xsd:simpleType>
Table 10-1. Using normal characters
Regular expression |
Matching strings |
Non-matching strings |
a
|
a
|
b
|
a|b|c
|
a, b, c
|
abc
|
Table 10-3. Using character entity references
Regular expression |
Matching strings |
Non-matching strings |
a z
|
a z
|
az
|
a *z
|
az, a z, a z, a z
|
a *z
|
PB&J
|
PB&J
|
PBJ
|
Table 10-5. Using single-character escapes
Regular expression |
Matching strings |
Non-matching strings |
1+2
|
12, 112, 1112
|
1+2
|
1\+2
|
1+2
|
12, 1\+2
|
1\++2
|
1+2, 1++2, 1+++2
|
12
|
Table 10-7. Using multi-character escapes
Regular expression |
Matching strings |
Non-matching strings |
a\dz
|
a0z, a1z
|
az, adz, a12z
|
a.z
|
a1z, axz
|
az, axxz
|
Table 10-9. Using category escapes
Regular expression |
Matching strings |
Non-matching strings |
\p{Lu}
|
A, B, C
|
a, b, c, 1, 2, 3
|
\P{Lu}
|
a, b, c, 1, 2, 3
|
A, B, C
|
\p{Nd}
|
1, 2, 3
|
a, b, c, A, B, C
|
\P{Nd}
|
a, b, c, A, B, C
|
1, 2, 3
|
Table 10-11. Using block escapes
Regular expression |
Matching strings |
Non-matching strings |
\p{IsBasicLatin}
|
a, b, c
|
â, ß, ç
|
\P{IsBasicLatin}
|
â, ß, ç
|
a, b, c
|
Table 10-12. Specifying a list of characters
Regular expression |
Matching strings |
Non-matching strings |
[abc]z
|
az, bz, cz
|
abz, z, abcz, abc
|
[\p{Lu}\d]z
|
Az, Bz, 1z, 2z
|
az, bz, cz, A1z
|
Table 10-13. Specifying a range
Regular expression |
Matching strings |
Non-matching strings |
[a-f]z
|
az, fz
|
z, abz, gz, hz
|
[0-9a-fA-F]z
|
1z, az, Bz
|
z, gz, Gz, 1aBz
|
[ -]z
|
az, bz, cz
|
âz
|
Table 10-14. Combining characters and ranges
Regular expression |
Matching strings |
Non-matching strings |
[0-9pqr]z
|
1z, 2z, pz, rz
|
cz,dz, 0sz
|
[p-r\d]z
|
1z, 2z, pz, rz
|
cz,dz, 0sz
|
Table 10-15. Negating a character class expression
Regular expression |
Matching strings |
Non-matching strings |
[^ab]z
|
cz, dz, 1z
|
az, bz
|
[^\d]z
|
az, bz, cz
|
1z, 2z, 3z
|
[^1-3a-c]z
|
dz, 4z
|
1z, az
|
Table 10-16. Subtracting from a character class expression
Regular expression |
Matching strings |
Non-matching strings |
[a-z-[c]]z
|
az, dz, ez, zz
|
cz
|
[a-z-[cd]]z
|
az, ez, zz
|
cz, dz
|
[a-z-[c-e]]z
|
az, zz
|
cz, dz, ez, 1z
|
[^a-z-[123]]z
|
4z
|
az, 3z, zz
|
Table 10-17. Using parenthesized regular expressions
Regular expression |
Matching strings |
Non-matching strings |
(a|b)z
|
az, bz
|
abz, z
|
(ab)*z
|
z, abz, ababz
|
az, bz, aabbz
|
(a+b)*z
|
z, abz, aabz, abaabz
|
az, abbz
|
([a-f]x)*z
|
z, axz, bxfxfxz
|
gxz, xz
|
(\db)*z
|
z, 1bz, 1b2bz
|
1z, bz
|
Table 10-19. Using quantifiers
Regular expression |
Matching strings |
Non-matching strings |
abz
|
abz
|
az, abbz
|
ab?z
|
az, abz
|
abbz
|
ab*z
|
az, abz, abbz, abbbz, ...
|
a1z
|
ab+z
|
abz, abbz, abbbz, ...
|
az
|
ab{2}z
|
abbz
|
abz, abbbz
|
ab{2,}z
|
abbz, abbbz, abbbbz, ...
|
az, abz
|
ab{2,3}z
|
abbz, abbbz
|
az, abz, abbbbz
|
a[b-d]+z
|
abz, abdz, addbccdddz
|
az, aez, abez
|
a\p{Nd}+z
|
a1z, a11z, a234z
|
az, abcz
|
a(bc)+z
|
abcz, abcbcz, abcbcbcz, ...
|
az, abz
|
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