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| | # -*- encoding: binary -*-
require 'rack'
# See the README for usage instructions
class Clogger
# the version of Clogger, currently 0.7.0
VERSION = '0.7.0'
# :stopdoc:
OP_LITERAL = 0
OP_REQUEST = 1
OP_RESPONSE = 2
OP_SPECIAL = 3
OP_EVAL = 4
OP_TIME_LOCAL = 5
OP_TIME_UTC = 6
OP_REQUEST_TIME = 7
OP_TIME = 8
OP_COOKIE = 9
# support nginx variables that are less customizable than our own
ALIASES = {
'$request_time' => '$request_time{3}',
'$time_local' => '$time_local{%d/%b/%Y:%H:%M:%S %z}',
'$time_utc' => '$time_utc{%d/%b/%Y:%H:%M:%S %z}',
'$msec' => '$time{3}',
'$usec' => '$time{6}',
'$http_content_length' => '$content_length',
'$http_content_type' => '$content_type',
}
SPECIAL_VARS = {
:body_bytes_sent => 0,
:status => 1,
:request => 2, # REQUEST_METHOD PATH_INFO?QUERY_STRING HTTP_VERSION
:request_length => 3, # env['rack.input'].size
:response_length => 4, # like body_bytes_sent, except "-" instead of "0"
:ip => 5, # HTTP_X_FORWARDED_FOR || REMOTE_ADDR || -
:pid => 6, # getpid()
:request_uri => 7
}
private
CGI_ENV = Regexp.new('\A\$(' <<
%w(request_method content_length content_type
remote_addr remote_ident remote_user
path_info query_string script_name
server_name server_port
auth_type gateway_interface server_software path_translated
).join('|') << ')\z')
SCAN = /([^$]*)(\$+(?:env\{\w+(?:\.[\w\.]+)?\}|
e\{[^\}]+\}|
(?:request_)?time\{\d+\}|
time_(?:utc|local)\{[^\}]+\}|
\w*))?([^$]*)/x
def compile_format(str, opt = {})
longest_day = Time.at(26265600) # "Saturday, November 01, 1970 00:00:00"
rv = []
opt ||= {}
str.scan(SCAN).each do |pre,tok,post|
rv << [ OP_LITERAL, pre ] if pre && pre != ""
unless tok.nil?
if tok.sub!(/\A(\$+)\$/, '$')
rv << [ OP_LITERAL, $1 ]
end
compat = ALIASES[tok] and tok = compat
case tok
when /\A(\$*)\z/
rv << [ OP_LITERAL, $1 ]
when /\A\$env\{(\w+(?:\.[\w\.]+))\}\z/
rv << [ OP_REQUEST, $1 ]
when /\A\$e\{([^\}]+)\}\z/
rv << [ OP_EVAL, $1 ]
when /\A\$cookie_(\w+)\z/
rv << [ OP_COOKIE, $1 ]
when CGI_ENV, /\A\$(http_\w+)\z/
rv << [ OP_REQUEST, $1.upcase ]
when /\A\$sent_http_(\w+)\z/
rv << [ OP_RESPONSE, $1.downcase.tr('_','-') ]
when /\A\$time_local\{([^\}]+)\}\z/
fmt = $1
rv << [ OP_TIME_LOCAL, fmt, longest_day.strftime(fmt) ]
when /\A\$time_utc\{([^\}]+)\}\z/
fmt = $1
rv << [ OP_TIME_UTC, fmt, longest_day.strftime(fmt) ]
when /\A\$time\{(\d+)\}\z/
rv << [ OP_TIME, *usec_conv_pair(tok, $1.to_i) ]
when /\A\$request_time\{(\d+)\}\z/
rv << [ OP_REQUEST_TIME, *usec_conv_pair(tok, $1.to_i) ]
else
tok_sym = tok[1..-1].to_sym
if special_code = SPECIAL_VARS[tok_sym]
rv << [ OP_SPECIAL, special_code ]
else
raise ArgumentError, "unable to make sense of token: #{tok}"
end
end
end
rv << [ OP_LITERAL, post ] if post && post != ""
end
# auto-append a newline
last = rv.last or return rv
op = last.first
ors = opt[:ORS] || "\n"
if (op == OP_LITERAL && /#{ors}\z/ !~ last.last) || op != OP_LITERAL
rv << [ OP_LITERAL, ors ] if ors.size > 0
end
rv
end
def usec_conv_pair(tok, prec)
if prec == 0
[ "%d", 1 ] # stupid...
elsif prec > 6
raise ArgumentError, "#{tok}: too high precision: #{prec} (max=6)"
else
[ "%d.%0#{prec}d", 10 ** (6 - prec) ]
end
end
def need_response_headers?(fmt_ops)
fmt_ops.any? { |op| OP_RESPONSE == op[0] }
end
def need_wrap_body?(fmt_ops)
fmt_ops.any? do |op|
(OP_REQUEST_TIME == op[0]) || (OP_SPECIAL == op[0] &&
(SPECIAL_VARS[:body_bytes_sent] == op[1] ||
SPECIAL_VARS[:response_length] == op[1]))
end
end
# :startdoc:
end
require 'clogger/format'
begin
raise LoadError if ENV['CLOGGER_PURE'].to_i != 0
require 'clogger_ext'
rescue LoadError
require 'clogger/pure'
end
|