Validating a file with regular expressions

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In various use-cases, but especially at web-based registration forms we need to make sure the value we received is a valid e-mail address.Another common use-case is when we get a large text-file (a dump, or a log file) and we need to extract the list of e-mail address from that file. Add Or Update Item(String bstr Url, String bstr List Name, Boolean b Add, Boolean b System Update, Boolean b Preserve Item Version, Boolean b Preserve Item UIVersion, Boolean b Update No Version, Int32& pl ID, String& pbstr Guid, Guid pbstr New Doc Id, Boolean b Has New Doc Id, String bstr Version, Object& pvar Attachment Names, Object& pvar Attachment Contents, Object& pvar Properties, Boolean b Check Out, Boolean b Checkin, Boolean b Un Restricted Update In Progress, Boolean b Migration, Boolean b Publish, String bstr File Name, ISP2DSafe Array Writer p List Data Validation Callback, ISP2DSafe Array Writer p Restrict Insert Callback, ISP2DSafe Array Writer p Unique Field Callback) // Matches any string that starts with a non-word character // any string that starts with '_vti' // any string that starts with an _ (underscore) (apparently this is a 'word character') ^(\W|_vti|_) // Matches any characters that are non-word characters [^\w] // Matches all the illegal file endings listed in the support article.Available as of Camel 2.3 Validate uses an expression or predicates to validate the contents of a message.

validating a file with regular expressions-49

validating a file with regular expressions-48

One of the best (and maybe only valid) use-cases is when you would like to teach regexes.Your organization has a few vacant positions and you are planning to use the Google Forms service to prepare a pre-interview questionnaire for job applicants.You have created a form and it has all the standard fields where candidates can enter their name, email address, website URL, phone number, zip code and other essential details.For example: examples/email_It properly verifies if an e-mail is valid, it even removes unnecessary white-spaces from both ends of the e-mail address, but it cannot really verify if the given e-mail address is really the address of someone, and if that someone is the same person who typed it in, in a registration form.These can be verified only by actually sending an e-mail to that address with a code and asking the user there to verify that indeed s/he wanted to subscribe, or do whatever action triggered the email validation.

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