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This module provides the Erlang Web Server API module programmer with miscellaneous utility functions.
convert_request_date(DateString) -> ErlDate|bad_date
Types:
DateString = string()
ErlDate = {{Year,Month,Date},{Hour,Min,Sec}}
Year = Month = Date = Hour = Min = Sec = integer()
convert_request_date/1 converts DateString to the Erlang
date format. DateString must be in one of the three date formats that is defined
in the RFC 2616.
Types:
FileInfo = file_info()
Etag = string()
create_etag/1 calculates the Etag for a file, from it's size and time for
last modification. fileinfo is a record defined in kernel/include/file.hrl
decode_base64(Base64String) -> ASCIIString
Types:
Base64String = ASCIIString = string()
Deprecated use http_base_64:decode/1
decode_hex(HexValue) -> DecValue
Types:
HexValue = DecValue = string()
day(NthDayOfWeek) -> DayOfWeek
Types:
NthDayOfWeek = 1-7
DayOfWeek = string()
day/1 converts the day of the week
(NthDayOfWeek) as an integer (1-7) to an abbreviated
string, that is:
1 = "Mon", 2 = "Tue", ..., 7 = "Sat".
encode_base64(ASCIIString) -> Base64String
Types:
ASCIIString = string()
Base64String = string()
Deprecated use http_base_64:decode/1
flatlength(NestedList) -> Size
Types:
NestedList = list()
Size = integer()
header(StatusCode,PersistentConn)
header(StatusCode,Date)
header(StatusCode,MimeType,Date)
header(StatusCode,MimeType,PersistentConn,Date) -> HTTPHeader
Types:
StatusCode = integer()
Date = rfc1123_date()
MimeType = string()
PersistentConn = true | false
header returns a HTTP 1.1 header string. The
StatusCode is one of the status codes defined in RFC
2616 and the Date string is RFC 1123
compliant. (See rfc1123_date/0).
Note that the two version of header/n that does not
has a PersistentConn argument is there only for
backward compability, and must not be used in new Erlang
Webserver API modules. that will support persistent
connections.
hexlist_to_integer(HexString) -> Number
Types:
Number = integer()
HexString = string()
integer_tohexlist(Number) -> HexString
Types:
Number = integer()
HexString = string()
key1search(TupleList,Key)
key1search(TupleList,Key,Undefined) -> Result
Types:
TupleList = [tuple()]
Key = term()
Result = term() | undefined | Undefined
Undefined = term()
key1search searches the TupleList for a tuple
whose first element is Key. key1search/2
returns undefined and key1search/3 returns
Undefined if no tuple is found.
lookup(ETSTable,Key) -> Result
lookup(ETSTable,Key,Undefined) -> Result
Types:
ETSTable = ets_table()
Key = term()
Result = term() | undefined | Undefined
Undefined = term()
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.
lookup_mime(ConfigDB,Suffix)
lookup_mime(ConfigDB,Suffix,Undefined) -> MimeType
Types:
ConfigDB = ets_table()
Suffix = string()
MimeType = string() | undefined | Undefined
Undefined = term()
lookup_mime returns the mime type associated with a
specific file suffix as specified in the mime.types
file (located in the config directory (UNIX: $SERVER_ROOT/conf/mime.types, Windows: %SERVER_ROOT%\conf\mime.types)).
lookup_mime_default(ConfigDB,Suffix)
lookup_mime_default(ConfigDB,Suffix,Undefined) -> MimeType
Types:
ConfigDB = ets_table()
Suffix = string()
MimeType = string() | undefined | Undefined
Undefined = term()
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 (UNIX: $SERVER_ROOT/conf/mime.types, Windows: %SERVER_ROOT%\conf\mime.types)). If no appropriate association can be found
the value of DefaultType is
returned.
message(StatusCode,PhraseArgs,ConfigDB) -> Message
Types:
StatusCode = 301 | 400 | 403 | 404 | 500 | 501 | 504
PhraseArgs = term()
ConfigDB = ets_table
Message = string()
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.
Types:
NthMonth = 1-12
Month = string()
month/1 converts the month NthMonth as an
integer (1-12) to an abbreviated string, that is:
1 = "Jan", 2 = "Feb", ..., 12 = "Dec".
multi_lookup(ETSTable,Key) -> Result
Types:
ETSTable = ets_table()
Key = term()
Result = [term()]
multi_lookup extracts all {Key,Value} tuples
from an ETSTable and returns all
Values associated with the Key in a list.
reason_phrase(StatusCode) -> Description
Types:
StatusCode = 100|
200 | 201 | 202 | 204 | 205 | 206 |
300 | 301 | 302 | 303 | 304 |
400 | 401 | 402 | 403 | 404 | 405 | 406 | 410 411 | 412 | 413 | 414 415 | 416 | 417 |
500 | 501 | 502 | 503 | 504 | 505
Description = string()
reason_phrase returns the Description of an
HTTP 1.1 StatusCode, for example 200 is "OK" and 201
is "Created". Read RFC 2616 for further information.
rfc1123_date() -> RFC1123Date
rfc1123_date({{YYYY,MM,DD},{Hour,Min,Sec}}}) -> RFC1123Date
Types:
YYYY = MM = DD = Hour = Min =Sec = integer()
RFC1123Date = string()
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.
split(String,RegExp,N) -> SplitRes
Types:
String = RegExp = string()
SplitRes = {ok, FieldList} | {error, errordesc()}
Fieldlist = [string()]
N = integer
split/3 splits the String in N chunks
using the RegExp. split/3 is is equivalent to
regexp:split/2 with one exception, that is N
defines the number of maximum number of fields in the
FieldList.
split_script_path(RequestLine) -> Splitted
Types:
RequestLine = string()
Splitted = not_a_script | {Path, PathInfo, QueryString}
Path = QueryString = PathInfo = string()
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 not_a_script is returned.
split_path(RequestLine) -> {Path,QueryStringOrPathInfo}
Types:
RequestLine = Path = QueryStringOrPathInfo = string()
split_path/1 splits the RequestLine in a file
reference (Path) and a QueryString or a
PathInfo string as specified in RFC 2616. A
QueryString is isolated from the Path with a
question mark (?) and PathInfo with a slash
(/). In the case of a QueryString, everything before
the ? is a Path and everything after a
QueryString. In the case of a PathInfo the
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.
Types:
String = Stripped = string()
strip/1 removes any leading or trailing linear white
space from the string. Linear white space should be read as
horisontal tab or space.
Types:
FileName = Suffix = string()
suffix/1 is equivalent to
filename:extension/1 with one exception, that is
Suffix is returned without a leading dot (.).
to_lower(String) -> ConvertedString
Types:
String = ConvertedString = string()
to_upper(String) -> ConvertedString
Types:
String = ConvertedString = string()