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Types

convert_request_date/1 converts DateString to the Erlang date format. DateString must be in one of the three date formats defined in RFC 2616.

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create_etag/1 calculates the Etag for a file from its size and time for last modification. FileInfo is a record defined in kernel/include/file.hrl.

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day/1 converts the day of the week (NthDayOfWeek) from an integer (1-7) to an abbreviated string, that is:

1 = "Mon", 2 = "Tue", ..., 7 = "Sat".

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Converts the hexadecimal value HexValue into its decimal equivalent (DecValue).

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flatlength/1 computes the size of the possibly nested list NestedList, which can contain binaries.

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hexlist_to_integer converts the hexadecimal value of HexString to an integer.

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integer_to_hexlist/1 returns a string representing Number in a hexadecimal form.

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lookup extracts {Key,Value} tuples from ETSTable and returns the Value associated with Key. If ETSTable is of type bag, only the first Value associated with Key is returned. lookup/2 returns undefined and lookup/3 returns Undefined if no Value is found.

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lookup_mime returns the MIME type associated with a specific file suffix as specified in the file mime.types (located in the config directory).

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lookup_mime_default returns the MIME type associated with a specific file suffix as specified in the mime.types file (located in the config directory). If no appropriate association is found, the value of DefaultType is returned.

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message/3 returns an informative HTTP 1.1 status string in HTML. Each StatusCode requires a specific PhraseArgs:

301

string(): A URL pointing at the new document position.

400 | 401 | 500

none (no PhraseArgs).

403 | 404

string(): A Request-URI as described in RFC 2616.

501

{Method,RequestURI,HTTPVersion}: The HTTP Method, Request-URI, and HTTP-Version as defined in RFC 2616.

504

string(): A string describing why the service was unavailable.

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month/1 converts the month NthMonth as an integer (1-12) to an abbreviated string, that is:

1 = "Jan", 2 = "Feb", ..., 12 = "Dec".

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multi_lookup extracts all {Key,Value} tuples from an ETSTable and returns all Values associated with Key in a list.

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reason_phrase returns Description of an HTTP 1.1 StatusCode, for example, 200 is "OK" and 201 is "Created". For more information, see RFC 2616.

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rfc1123_date/0 returns the current date in RFC 1123 format. rfc_date/1 converts the date in the Erlang format to the RFC 1123 date format.

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split/3 splits String in N chunks using RegExp. split/3 is equivalent to regexp:split/2 with the exception that N defines the maximum number of fields in FieldList.

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split_script_path/1 is equivalent to split_path/1 with one exception. If the longest possible path is not a regular, accessible, and executable file, then not_a_script is returned.

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split_path/1 splits RequestLine in a file reference (Path), and a QueryString or a PathInfo string as specified in RFC 2616. A QueryString is isolated from Path with a question mark (?) and PathInfo with a slash (/). In the case of a QueryString, everything before ? is a Path and everything after ? is a QueryString. In the case of a PathInfo, RequestLine is scanned from left-to-right on the hunt for longest possible Path being a file or a directory. Everything after the longest possible Path, isolated with a /, is regarded as PathInfo. The resulting Path is decoded using decode_hex/1 before delivery.

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strip/1 removes any leading or trailing linear white space from the string. Linear white space is to be read as horizontal tab or space.

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suffix/1 is equivalent to filename:extension/1 with the exception that Suffix is returned without a leading dot (.).