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Confirm Regular Expression Case Full Name

To learn Regex, I solved some problems for education and training. And this is a problem, I know that this may not be the best way to do with Regex, and my Regex is a mess, but I liked the challenge.

Problem:

  • Names must be the title of the case ;
  • There are exceptions for some lowercase words inside;
  • And some Names, for example: McDonald, MacDuff, D'Estoile
  • Names with 'and are accepted -, and sometimes they are o'Brien, O'brien, O'Brien, O 'Brien or' Ehu Kali.
  • No spaces at the beginning and end of the name;
  • No more than one space between each full name;
  • A is .accepted, if not one, for example: Dan. Ferdnand (not accepted) and Dan G. Ferdnand (accepted)
  • Numbers and characters not accepted
  • However, Roman numerals are accepted and are not a Title, for example: Elizabeth II
  • Some names may be the same, for example: Akihito (Prince of Japan).
  • Some special characters common in some countries are accepted, for example: Valeh ßlÿsgÿroğlu, Lażżru Role, Alaksiej Taraškievič.

Regex

The code

^(?![ ])(?!.*(?:\d|[ ]{2}|[!$%^&*()_+|~=`\{\}\[\]:";<>?,\/]))(?:(?:e|da|do|das|dos|de|d'|la|las|el|los|l'|al|of|the|el-|al-|di|van|der|op|den|ter|te|ten|ben|ibn)\s*?|(?:[A-ZàáâäãåąčćęèéêëėįìíîïłńòóôöõøùúûüųūÿýżźñçčšžÀÁÂÄÃÅĄĆČĖĘÈÉÊËÌÍÎÏĮŁŃÒÓÔÖÕØÙÚÛÜŲŪŸÝŻŹÑßÇŒÆČŠŽ∂ð'][^\s]*\s*?)(?!.*[ ]$))+$

And Regex101 with a checklist

References

What I tried so far was based on them:

Does not work

Regex , , , :

  • AlTeRnAtE LeTtEr

:

  • Urxan Əbűlhəsənzadə
  • İsmət Jafarov
  • Şükür Hagverdiyev
  • Űmid Abdurrahimov
  • Ġerardo Seralta​​li >
  • Ċikku Paris

Regex ()?

, , ?

p.s.: Regex101.

+4
1

, Regex , PCRE, regex.

. ,

(?(DEFINE)
    (?# Definitions )
    (?<valid_nameChars>[\p{L}\p{Nl}])
    (?<valid_nonNameChars>[^\p{L}\p{Nl}\p{Zs}])
    (?<valid_startFirstName>(?![a-z])[\p{L}'])
    (?<valid_upperChar>(?![a-z])\p{L})
    (?<valid_nameSeparatorsSoft>[\p{Pd}'])
    (?<valid_nameSeparatorsHard>\p{Zs})
    (?<valid_nameSeparators>(?&valid_nameSeparatorsSoft)|(?&valid_nameSeparatorsHard))
    (?# Invalid combinations )
    (?<invalid_startChar>^[\p{Zs}a-z])
    (?<invalid_endChar>.*[^\p{L}\p{Nl}.\p{C}]$)
    (?<invalid_unaccompaniedSymbol>.*(?&valid_nameSeparatorsHard)(?&valid_nonNameChars)(?&valid_nameSeparatorsHard))
    (?<invalid_overTwoUpper>(?:(?&valid_nameChars)*\p{Lu}){3})
    (?<invalid>(?&invalid_startChar)|(?&invalid_endChar)|(?&invalid_unaccompaniedSymbol)|(?&invalid_overTwoUpper))
    (?# Valid combinations )
    (?<valid_name>(?:(?:(?&valid_nameChars)|(?&valid_nameSeparatorsSoft))*(?&valid_nameChars)+(?:(?&valid_nameChars)|(?&valid_nameSeparatorsSoft))*)+\.?)
    (?<valid_firstName>(?&valid_startFirstName)(?:\.|(?&valid_name)*))
    (?<valid_multipleName>(?&valid_firstName)(?=.*(?&valid_nameSeparators)(?&valid_upperChar))(?:(?&valid_nameSeparatorsHard)(?&valid_name))+)
    (?<valid>(?&valid_multipleName)|(?&valid_firstName))
)
^(?!(?&invalid))(?&valid)$


== 1NcOrrect N4M3S ==
CAPITAL LETTER
AlTeRnAtE LeTtEr
Natalia maria
Natalia aria
Natalia orea
Maria dornelas
Samuel eto'
Miguel lasagna
Antony1 de Home Ap*ril
Ap*ril Willians
Antony_ de Home Apr+il
Ant_ony de Home Apr#il
Antony@ de Ho@me Apr^il
Maria  Silva
Maria silva
maria Silva
 Maria Silva
Maria Silva 
Maria / Silva
Maria . Silva
John W8

==Correct Names==
Urxan Əbűlhəsənzadə
İsmət Jafarov
Şükür Hagverdiyev
Űmid Abdurrahimov
Ġerardo Seralta
Ċikku Paris
Hind ibn Sheik
Colop-U-Uichikin
Lażżru Role
Alaksiej Taraškievič
Petruso Husoǔski
Sumu-la-El
Valeh ßlÿsgÿroğlu
'Arab al-Rashayida
Tariq al-Hashimi
Nabeeh el-Mady
Tariq Al-Hashimi
Brian O'Conner
Maria da Silva
Maria Silva
Maria G. Silva
Maria McDuffy
Getúlio Dornelles Vargas
Maria das Flores
John Smith
John D'Largy
John Doe-Smith
John Doe Smith
Hector Sausage-Hausen
Mathias d'Arras
Martin Luther King Jr.
Ai Wong
Chao Chang
Alzbeta Bara
Marcos Assunção
Maria da Silva e Silva
Juscelino Kubitschek de Oliveira
Maria da Costa e Silva
Samuel Eto'o
María Antonieta de las Nieves
Eugène
Antòny de Homé April
àntony de Home ùpril
Antony de Home Aprìl
Pierre de l'Estache
Pierre de L'Estoile
Akihito
Nadine Schröder
Anna A. Møller
D. Pedro I
Pope Benedict XVI
Marsibil Ragnarsdóttir
Natanaël Morel
Isaac De la Croix
Jean-Michel Bozonnet
Qutaibah Mu'tazz Abadi
Rushd Jawna' Kassab
Khaldun Abdul-Qahhar Sabbag
'Awad Bashshar Asker
Al B. Zellweger
Gunnleif Snæ-Ulfsson
Käre Toresson
Sorli Ærnmundsson
Arnkel Øystæinsson
Ástríður Dórey
Åsmund Kåresson
Yahatti-Il
Ipqu-Annunitum
Nabu-zar-adan
Eskopas Cañaverri
Botolph of Langchester
Aelfhun the Cantrell
Fraco di Natale
Fraco Di Natale
Iván de Luca
Iván De Luca
Man'nah
Atabala Aüamusalü
Ramiz Ağasəfalu
Dadaş Aghakhanov
Fÿrxad Mübarizlı
Vaclaǔ Šupa
Yakiv Volacič
Flor Van Vaerenbergh
Flor van Vaerenbergh
Edwin van der Sar
Husein Ekmečić
Álvaro Guimarães Alencar
Phone U Yaza Arkar
Seocan MacGhille
X'wat'e Tlekadugovy
Albert-Jan Bootsveld
Maurits-jan Kuipers op den Kollenstaart
Elco ter Hoek
Robbert te Poele
Aad ten Have
'Ehu Kali
Ho'opa'a Loni
Aukanai'i Mahi'ai
Kalman ben Tal El
Żytomir Roszkowski
K'awai

==EXTRA== only if possible, strange ones
Maol-Moire Mac'IlleBhuidh
Tòmas MacIlleChruim
Aindreas MacIllEathain
Eanruig MacGilleBhreac
Peadar MacGilleDhonaghart
Maolmhuire MacGill-Eain
Eanruig MacGilleBhreac
Wim van 't Plasman

. ,

Urxan Əbűlhəsənzadə
İsmət Jafarov
Şükür Hagverdiyev
Űmid Abdurrahimov
Ġerardo Seralta
Ċikku Paris
Hind ibn Sheik
Colop-U-Uichikin
Lażżru Role
Alaksiej Taraškievič
Petruso Husoǔski
Sumu-la-El
Valeh ßlÿsgÿroğlu
'Arab al-Rashayida
Tariq al-Hashimi
Nabeeh el-Mady
Tariq Al-Hashimi
Brian O'Conner
Maria da Silva
Maria Silva
Maria G. Silva
Maria McDuffy
Getúlio Dornelles Vargas
Maria das Flores
John Smith
John D'Largy
John Doe-Smith
John Doe Smith
Hector Sausage-Hausen
Mathias d'Arras
Martin Luther King Jr.
Ai Wong
Chao Chang
Alzbeta Bara
Marcos Assunção
Maria da Silva e Silva
Juscelino Kubitschek de Oliveira
Maria da Costa e Silva
Samuel Eto'o
María Antonieta de las Nieves
Eugène
Antòny de Homé April
àntony de Home ùpril
Antony de Home Aprìl
Pierre de l'Estache
Pierre de L'Estoile
Akihito
Nadine Schröder
Anna A. Møller
D. Pedro I
Pope Benedict XVI
Marsibil Ragnarsdóttir
Natanaël Morel
Isaac De la Croix
Jean-Michel Bozonnet
Qutaibah Mu'tazz Abadi
Rushd Jawna' Kassab
Khaldun Abdul-Qahhar Sabbag
'Awad Bashshar Asker
Al B. Zellweger
Gunnleif Snæ-Ulfsson
Käre Toresson
Sorli Ærnmundsson
Arnkel Øystæinsson
Ástríður Dórey
Åsmund Kåresson
Yahatti-Il
Ipqu-Annunitum
Nabu-zar-adan
Eskopas Cañaverri
Botolph of Langchester
Aelfhun the Cantrell
Fraco di Natale
Fraco Di Natale
Iván de Luca
Iván De Luca
Man'nah
Atabala Aüamusalü
Ramiz Ağasəfalu
Dadaş Aghakhanov
Fÿrxad Mübarizlı
Vaclaǔ Šupa
Yakiv Volacič
Flor Van Vaerenbergh
Flor van Vaerenbergh
Edwin van der Sar
Husein Ekmečić
Álvaro Guimarães Alencar
Phone U Yaza Arkar
Seocan MacGhille
X'wat'e Tlekadugovy
Albert-Jan Bootsveld
Maurits-jan Kuipers op den Kollenstaart
Elco ter Hoek
Robbert te Poele
Aad ten Have
'Ehu Kali
Ho'opa'a Loni
Aukanai'i Mahi'ai
Kalman ben Tal El
Żytomir Roszkowski
K'awai
Maol-Moire Mac'IlleBhuidh
Tòmas MacIlleChruim
Aindreas MacIllEathain
Eanruig MacGilleBhreac
Peadar MacGilleDhonaghart
Maolmhuire MacGill-Eain
Eanruig MacGilleBhreac
Wim van 't Plasman

define . , , . , \p{.}, . Unicode (.. \p{L} - - , , , ).

- , , , regex101 , .

+1

Source: https://habr.com/ru/post/1687033/

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