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� � f�7 c @ s d Z d d l Z d d l Z d d d d d d d d d g Z d a d" Z d d# d d d d d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z Gd d � d � Z d d � Z d d � Z d d � Z e d! k re � n d S($ u5 Helper class to quickly write a loop over all standard input files. Typical use is: import fileinput for line in fileinput.input(): process(line) This iterates over the lines of all files listed in sys.argv[1:], defaulting to sys.stdin if the list is empty. If a filename is '-' it is also replaced by sys.stdin. To specify an alternative list of filenames, pass it as the argument to input(). A single file name is also allowed. Functions filename(), lineno() return the filename and cumulative line number of the line that has just been read; filelineno() returns its line number in the current file; isfirstline() returns true iff the line just read is the first line of its file; isstdin() returns true iff the line was read from sys.stdin. Function nextfile() closes the current file so that the next iteration will read the first line from the next file (if any); lines not read from the file will not count towards the cumulative line count; the filename is not changed until after the first line of the next file has been read. Function close() closes the sequence. Before any lines have been read, filename() returns None and both line numbers are zero; nextfile() has no effect. After all lines have been read, filename() and the line number functions return the values pertaining to the last line read; nextfile() has no effect. All files are opened in text mode by default, you can override this by setting the mode parameter to input() or FileInput.__init__(). If an I/O error occurs during opening or reading a file, the IOError exception is raised. If sys.stdin is used more than once, the second and further use will return no lines, except perhaps for interactive use, or if it has been explicitly reset (e.g. using sys.stdin.seek(0)). Empty files are opened and immediately closed; the only time their presence in the list of filenames is noticeable at all is when the last file opened is empty. It is possible that the last line of a file doesn't end in a newline character; otherwise lines are returned including the trailing newline. Class FileInput is the implementation; its methods filename(), lineno(), fileline(), isfirstline(), isstdin(), nextfile() and close() correspond to the functions in the module. In addition it has a readline() method which returns the next input line, and a __getitem__() method which implements the sequence behavior. The sequence must be accessed in strictly sequential order; sequence access and readline() cannot be mixed. Optional in-place filtering: if the keyword argument inplace=1 is passed to input() or to the FileInput constructor, the file is moved to a backup file and standard output is directed to the input file. This makes it possible to write a filter that rewrites its input file in place. If the keyword argument backup=".<some extension>" is also given, it specifies the extension for the backup file, and the backup file remains around; by default, the extension is ".bak" and it is deleted when the output file is closed. In-place filtering is disabled when standard input is read. XXX The current implementation does not work for MS-DOS 8+3 filesystems. Performance: this module is unfortunately one of the slower ways of processing large numbers of input lines. Nevertheless, a significant speed-up has been obtained by using readlines(bufsize) instead of readline(). A new keyword argument, bufsize=N, is present on the input() function and the FileInput() class to override the default buffer size. XXX Possible additions: - optional getopt argument processing - isatty() - read(), read(size), even readlines() i Nu inputu closeu nextfileu filenameu linenou filelinenou isfirstlineu isstdinu FileInputi i u u rc C s= t r t j r t d � � n t | | | | | | � a t S( u Return an instance of the FileInput class, which can be iterated. The parameters are passed to the constructor of the FileInput class. The returned instance, in addition to being an iterator, keeps global state for the functions of this module,. u input() already active( u _stateu _fileu RuntimeErroru FileInput( u filesu inplaceu backupu bufsizeu modeu openhook( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu input[ s c C s# t } d a | r | j � n d S( u Close the sequence.N( u _stateu Noneu close( u state( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu closei s c C s t s t d � � n t j � S( u� Close the current file so that the next iteration will read the first line from the next file (if any); lines not read from the file will not count towards the cumulative line count. The filename is not changed until after the first line of the next file has been read. Before the first line has been read, this function has no effect; it cannot be used to skip the first file. After the last line of the last file has been read, this function has no effect. u no active input()( u _stateu RuntimeErroru nextfile( ( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu nextfileq s c C s t s t d � � n t j � S( ur Return the name of the file currently being read. Before the first line has been read, returns None. u no active input()( u _stateu RuntimeErroru filename( ( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu filename s c C s t s t d � � n t j � S( u� Return the cumulative line number of the line that has just been read. Before the first line has been read, returns 0. After the last line of the last file has been read, returns the line number of that line. u no active input()( u _stateu RuntimeErroru lineno( ( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu lineno� s c C s t s t d � � n t j � S( u� Return the line number in the current file. Before the first line has been read, returns 0. After the last line of the last file has been read, returns the line number of that line within the file. u no active input()( u _stateu RuntimeErroru filelineno( ( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu filelineno� s c C s t s t d � � n t j � S( ug Return the file number of the current file. When no file is currently opened, returns -1. u no active input()( u _stateu RuntimeErroru fileno( ( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu fileno� s u filenoc C s t s t d � � n t j � S( ue Returns true the line just read is the first line of its file, otherwise returns false. u no active input()( u _stateu RuntimeErroru isfirstline( ( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu isfirstline� s c C s t s t d � � n t j � S( u] Returns true if the last line was read from sys.stdin, otherwise returns false. u no active input()( u _stateu RuntimeErroru isstdin( ( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu isstdin� s c B s� | Ee Z d Z d Z d% d& d d d d% d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d d � Z d! d" � Z d# d$ � Z d% S(' u FileInputu? FileInput([files[, inplace[, backup[, bufsize, [, mode[, openhook]]]]]]) Class FileInput is the implementation of the module; its methods filename(), lineno(), fileline(), isfirstline(), isstdin(), fileno(), nextfile() and close() correspond to the functions of the same name in the module. In addition it has a readline() method which returns the next input line, and a __getitem__() method which implements the sequence behavior. The sequence must be accessed in strictly sequential order; random access and readline() cannot be mixed. u i u rc C sF t | t � r | f } n= | d k r= t j d d � } n | sL d } n t | � } | | _ | | _ | | _ | p| t | _ d | _ d | _ d | _ d | _ d | _ d | _ d | _ d | _ g | _ d | _ | d k r� t d � � n | | _ | r9| rt d � � n t | � s9t d � � q9n | | _ d S( Ni u -i u ru rUu Uu rbu= FileInput opening mode must be one of 'r', 'rU', 'U' and 'rb'u4 FileInput cannot use an opening hook in inplace modeu# FileInput openhook must be callable( u -F( u ru rUu Uu rb( u isinstanceu stru Noneu sysu argvu tupleu _filesu _inplaceu _backupu DEFAULT_BUFSIZEu _bufsizeu _savestdoutu _outputu _filenameu _linenou _filelinenou _fileu Falseu _isstdinu _backupfilenameu _bufferu _bufindexu ValueErroru _modeu callableu _openhook( u selfu filesu inplaceu backupu bufsizeu modeu openhook( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu __init__� s< u FileInput.__init__c C s | j � d S( N( u close( u self( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu __del__� s u FileInput.__del__c C s | j � f | _ d S( N( u nextfileu _files( u self( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu close� s u FileInput.closec C s | S( N( ( u self( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu __enter__� s u FileInput.__enter__c C s | j � d S( N( u close( u selfu typeu valueu traceback( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu __exit__� s u FileInput.__exit__c C s | S( N( ( u self( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu __iter__� s u FileInput.__iter__c C sy y | j | j } Wn t k r( Yn2 X| j d 7_ | j d 7_ | j d 7_ | S| j � } | su t � n | S( Ni ( u _bufferu _bufindexu IndexErroru _linenou _filelinenou readlineu StopIteration( u selfu line( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu __next__� s u FileInput.__next__c C sQ | | j k r t d � � n y | j � SWn t k rL t d � � Yn Xd S( Nu accessing lines out of orderu end of input reached( u _linenou RuntimeErroru __next__u StopIterationu IndexError( u selfu i( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu __getitem__ s u FileInput.__getitem__c C s� | j } d | _ | r$ | t _ n | j } d | _ | rI | j � n | j } d | _ | rx | j rx | j � n | j } d | _ | r� | j r� y t j | � Wq� t k r� Yq� Xn d | _ g | _ d | _ d S( Ni F( u _savestdoutu sysu stdoutu _outputu closeu _fileu _isstdinu _backupfilenameu _backupu osu unlinku OSErroru Falseu _bufferu _bufindex( u selfu savestdoutu outputu fileu backupfilename( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu nextfile s, u FileInput.nextfilec $ C s� y | j | j } Wn t k r( Yn2 X| j d 7_ | j d 7_ | j d 7_ | S| j s�| j sp d S| j d | _ | j d d � | _ d | _ d | _ d | _ d | _ | j d k r� d | _ t j | _ d | _ q�| j rk| j | j pd | _ y t j | j � Wn t j k r7Yn Xt j | j | j � t | j | j � | _ y t j | j j � � j } Wn' t k r�t | j d � | _ Yn� Xt j t j Bt j B} t t d � r�| t j O} n t j | j | | � } t j! | d � | _ y) t t d � r:t j" | j | � n Wn t k rOYn Xt j# | _$ | j t _# q�| j% r�| j% | j | j � | _ q�t | j | j � | _ n | j j& | j' � | _ d | _ | j s�| j( � n | j) � S( Ni u i u -u <stdin>u .baku wu O_BINARYu chmodFT(* u _bufferu _bufindexu IndexErroru _linenou _filelinenou _fileu _filesu _filenameu Noneu Falseu _isstdinu _backupfilenameu sysu stdinu Trueu _inplaceu _backupu osu unlinku erroru renameu openu _modeu fstatu filenou st_modeu OSErroru _outputu O_CREATu O_WRONLYu O_TRUNCu hasattru O_BINARYu fdopenu chmodu stdoutu _savestdoutu _openhooku readlinesu _bufsizeu nextfileu readline( u selfu lineu permu modeu fd( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu readline* sj u FileInput.readlinec C s | j S( N( u _filename( u self( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu filenamei s u FileInput.filenamec C s | j S( N( u _lineno( u self( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu linenol s u FileInput.linenoc C s | j S( N( u _filelineno( u self( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu filelinenoo s u FileInput.filelinenoc C s> | j r6 y | j j � SWq: t k r2 d SYq: Xn d Sd S( Ni i����i����( u _fileu filenou ValueError( u self( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu filenor s u FileInput.filenoc C s | j d k S( Ni ( u _filelineno( u self( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu isfirstline{ s u FileInput.isfirstlinec C s | j S( N( u _isstdin( u self( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu isstdin~ s u FileInput.isstdinNF( u __name__u __module__u __qualname__u __doc__u Noneu Falseu __init__u __del__u closeu __enter__u __exit__u __iter__u __next__u __getitem__u nextfileu readlineu filenameu linenou filelinenou filenou isfirstlineu isstdin( u __locals__( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu FileInput� s$ $ ? c C sw t j j | � d } | d k r> d d l } | j | | � S| d k rf d d l } | j | | � St | | � Sd S( Ni u .gzi u .bz2( u osu pathu splitextu gzipu openu bz2u BZ2File( u filenameu modeu extu gzipu bz2( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu hook_compressed� s u hook_compressedc s � f d d � } | S( Nc s t | | d � �S( Nu encoding( u open( u filenameu mode( u encoding( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu openhook� s u hook_encoded.<locals>.openhook( ( u encodingu openhook( ( u encodingu. /opt/alt/python33/lib64/python3.3/fileinput.pyu hook_encoded� s u hook_encodedc C sL d d l } d } d } | j t j d d � d � \ } } x> | D]6 \ } } | d k re d } n | d k rD | } qD qD Wx� t | d | d | �D]� } | d d � d k r� | d d � } n | d d � d k r� | d d � } n t d t � t � t � t � rd pd | f � q� Wt d t � t � t � f � d S( Ni i u ib:u -iu -bu inplaceu backupu u u %d: %s[%d]%s %su *u u %d: %s[%d]FTi����i����i����i����( u getoptu Falseu sysu argvu Trueu inputu printu linenou filenameu filelinenou isfirstline( u getoptu inplaceu backupu optsu argsu ou au line( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu _test� s" % !u _testu __main__i F( u __doc__u sysu osu __all__u Noneu _stateu DEFAULT_BUFSIZEu Falseu inputu closeu nextfileu filenameu linenou filelinenou filenou isfirstlineu isstdinu FileInputu hook_compressedu hook_encodedu _testu __name__( ( ( u. /opt/alt/python33/lib64/python3.3/fileinput.pyu <module>P s* �
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