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Diffstat (limited to 'trunk/bitbake/lib/bb/shell.py')
| -rw-r--r-- | trunk/bitbake/lib/bb/shell.py | 764 |
1 files changed, 764 insertions, 0 deletions
diff --git a/trunk/bitbake/lib/bb/shell.py b/trunk/bitbake/lib/bb/shell.py new file mode 100644 index 000000000..5d5565455 --- /dev/null +++ b/trunk/bitbake/lib/bb/shell.py @@ -0,0 +1,764 @@ +#!/usr/bin/env python +# ex:ts=4:sw=4:sts=4:et +# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- +########################################################################## +# +# Copyright (C) 2005 Michael 'Mickey' Lauer <mickey@Vanille.de>, Vanille Media +# +# This program is free software; you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free Software +# Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., 59 Temple +# Place, Suite 330, Boston, MA 02111-1307 USA. +# +########################################################################## + +""" +BitBake Shell + +IDEAS: + * list defined tasks per package + * list classes + * toggle force + * command to reparse just one (or more) bbfile(s) + * automatic check if reparsing is necessary (inotify?) + * frontend for bb file manipulation + * more shell-like features: + - shell lexer (shlex) + - output control, i.e. pipe output into grep, sort, etc. + - job control, i.e. bring running commands into background and foreground + - wildcards for commands, i.e. build *opie* + * start parsing in background right after startup + * print variable from package data + * ncurses interface + * read some initial commands from startup file (batch) + +MAYBE WORKING: + * poke doesn't work at all (outcommented atm.) + +PROBLEMS: + * force doesn't always work + * readline completion for commands with more than one parameters + +""" + +########################################################################## +# Import and setup global variables +########################################################################## + +try: + set +except NameError: + from sets import Set as set +import sys, os, imp, readline, socket, httplib, urllib, commands, popen2 +imp.load_source( "bitbake", os.path.dirname( sys.argv[0] )+"/bitbake" ) +from bb import data, parse, build, make, fatal + +__version__ = "0.5.0" +__credits__ = """BitBake Shell Version %s (C) 2005 Michael 'Mickey' Lauer <mickey@Vanille.de> +Type 'help' for more information, press CTRL-D to exit.""" % __version__ + +cmds = {} +leave_mainloop = False +last_exception = None +cooker = None +parsed = False +debug = os.environ.get( "BBSHELL_DEBUG", "" ) + +########################################################################## +# Class BitBakeShellCommands +########################################################################## + +class BitBakeShellCommands: + """This class contains the valid commands for the shell""" + + def __init__( self, shell ): + """Register all the commands""" + self._shell = shell + for attr in BitBakeShellCommands.__dict__: + if not attr.startswith( "_" ): + if attr.endswith( "_" ): + command = attr[:-1].lower() + else: + command = attr[:].lower() + method = getattr( BitBakeShellCommands, attr ) + debugOut( "registering command '%s'" % command ) + # scan number of arguments + usage = getattr( method, "usage", "" ) + if usage != "<...>": + numArgs = len( usage.split() ) + else: + numArgs = -1 + shell.registerCommand( command, method, numArgs, "%s %s" % ( command, usage ), method.__doc__ ) + + def _checkParsed( self ): + if not parsed: + print "SHELL: This command needs to parse bbfiles..." + self.parse( None ) + + def _findProvider( self, item ): + self._checkParsed() + preferred = data.getVar( "PREFERRED_PROVIDER_%s" % item, make.cfg, 1 ) + if not preferred: preferred = item + try: + lv, lf, pv, pf = cooker.findBestProvider( preferred ) + except KeyError: + if item in cooker.status.providers: + pf = cooker.status.providers[item][0] + else: + pf = None + return pf + + def alias( self, params ): + """Register a new name for a command""" + new, old = params + if not old in cmds: + print "ERROR: Command '%s' not known" % old + else: + cmds[new] = cmds[old] + print "OK" + alias.usage = "<alias> <command>" + + def buffer( self, params ): + """Dump specified output buffer""" + index = params[0] + print self._shell.myout.buffer( int( index ) ) + buffer.usage = "<index>" + + def buffers( self, params ): + """Show the available output buffers""" + commands = self._shell.myout.bufferedCommands() + if not commands: + print "SHELL: No buffered commands available yet. Start doing something." + else: + print "="*35, "Available Output Buffers", "="*27 + for index, cmd in enumerate( commands ): + print "| %s %s" % ( str( index ).ljust( 3 ), cmd ) + print "="*88 + + def build( self, params, cmd = "build" ): + """Build a providee""" + name = params[0] + + oldcmd = make.options.cmd + make.options.cmd = cmd + cooker.build_cache = [] + cooker.build_cache_fail = [] + + self._checkParsed() + + try: + cooker.buildProvider( name ) + except build.EventException, e: + print "ERROR: Couldn't build '%s'" % name + global last_exception + last_exception = e + + make.options.cmd = oldcmd + build.usage = "<providee>" + + def clean( self, params ): + """Clean a providee""" + self.build( params, "clean" ) + clean.usage = "<providee>" + + def compile( self, params ): + """Execute 'compile' on a providee""" + self.build( params, "compile" ) + compile.usage = "<providee>" + + def configure( self, params ): + """Execute 'configure' on a providee""" + self.build( params, "configure" ) + configure.usage = "<providee>" + + def edit( self, params ): + """Call $EDITOR on a providee""" + name = params[0] + bbfile = self._findProvider( name ) + if bbfile is not None: + os.system( "%s %s" % ( os.environ.get( "EDITOR", "vi" ), bbfile ) ) + else: + print "ERROR: Nothing provides '%s'" % name + edit.usage = "<providee>" + + def environment( self, params ): + """Dump out the outer BitBake environment (see bbread)""" + data.emit_env(sys.__stdout__, make.cfg, True) + + def exit_( self, params ): + """Leave the BitBake Shell""" + debugOut( "setting leave_mainloop to true" ) + global leave_mainloop + leave_mainloop = True + + def fetch( self, params ): + """Fetch a providee""" + self.build( params, "fetch" ) + fetch.usage = "<providee>" + + def fileBuild( self, params, cmd = "build" ): + """Parse and build a .bb file""" + name = params[0] + bf = completeFilePath( name ) + print "SHELL: Calling '%s' on '%s'" % ( cmd, bf ) + + oldcmd = make.options.cmd + make.options.cmd = cmd + cooker.build_cache = [] + cooker.build_cache_fail = [] + + try: + bbfile_data = parse.handle( bf, make.cfg ) + except parse.ParseError: + print "ERROR: Unable to open or parse '%s'" % bf + else: + item = data.getVar('PN', bbfile_data, 1) + data.setVar( "_task_cache", [], bbfile_data ) # force + try: + cooker.tryBuildPackage( os.path.abspath( bf ), item, bbfile_data ) + except build.EventException, e: + print "ERROR: Couldn't build '%s'" % name + global last_exception + last_exception = e + + make.options.cmd = oldcmd + fileBuild.usage = "<bbfile>" + + def fileClean( self, params ): + """Clean a .bb file""" + self.fileBuild( params, "clean" ) + fileClean.usage = "<bbfile>" + + def fileEdit( self, params ): + """Call $EDITOR on a .bb file""" + name = params[0] + os.system( "%s %s" % ( os.environ.get( "EDITOR", "vi" ), completeFilePath( name ) ) ) + fileEdit.usage = "<bbfile>" + + def fileRebuild( self, params ): + """Rebuild (clean & build) a .bb file""" + self.fileClean( params ) + self.fileBuild( params ) + fileRebuild.usage = "<bbfile>" + + def force( self, params ): + """Toggle force task execution flag (see bitbake -f)""" + make.options.force = not make.options.force + print "SHELL: Force Flag is now '%s'" % repr( make.options.force ) + + def help( self, params ): + """Show a comprehensive list of commands and their purpose""" + print "="*30, "Available Commands", "="*30 + allcmds = cmds.keys() + allcmds.sort() + for cmd in allcmds: + function,numparams,usage,helptext = cmds[cmd] + print "| %s | %s" % (usage.ljust(30), helptext) + print "="*78 + + def lastError( self, params ): + """Show the reason or log that was produced by the last BitBake event exception""" + if last_exception is None: + print "SHELL: No Errors yet (Phew)..." + else: + reason, event = last_exception.args + print "SHELL: Reason for the last error: '%s'" % reason + if ':' in reason: + msg, filename = reason.split( ':' ) + filename = filename.strip() + print "SHELL: Dumping log file for last error:" + try: + print open( filename ).read() + except IOError: + print "ERROR: Couldn't open '%s'" % filename + + def new( self, params ): + """Create a new .bb file and open the editor""" + dirname, filename = params + packages = '/'.join( data.getVar( "BBFILES", make.cfg, 1 ).split('/')[:-2] ) + fulldirname = "%s/%s" % ( packages, dirname ) + + if not os.path.exists( fulldirname ): + print "SHELL: Creating '%s'" % fulldirname + os.mkdir( fulldirname ) + if os.path.exists( fulldirname ) and os.path.isdir( fulldirname ): + if os.path.exists( "%s/%s" % ( fulldirname, filename ) ): + print "SHELL: ERROR: %s/%s already exists" % ( fulldirname, filename ) + return False + print "SHELL: Creating '%s/%s'" % ( fulldirname, filename ) + newpackage = open( "%s/%s" % ( fulldirname, filename ), "w" ) + print >>newpackage,"""DESCRIPTION = "" +SECTION = "" +AUTHOR = "" +HOMEPAGE = "" +MAINTAINER = "" +LICENSE = "GPL" +PR = "r0" + +SRC_URI = "" + +#inherit base + +#do_configure() { +# +#} + +#do_compile() { +# +#} + +#do_stage() { +# +#} + +#do_install() { +# +#} +""" + newpackage.close() + os.system( "%s %s/%s" % ( os.environ.get( "EDITOR" ), fulldirname, filename ) ) + new.usage = "<directory> <filename>" + + def pasteBin( self, params ): + """Send a command + output buffer to http://pastebin.com""" + index = params[0] + contents = self._shell.myout.buffer( int( index ) ) + status, error, location = sendToPastebin( contents ) + if status == 302: + print "SHELL: Pasted to %s" % location + else: + print "ERROR: %s %s" % ( status, error ) + pasteBin.usage = "<index>" + + def pasteLog( self, params ): + """Send the last event exception error log (if there is one) to http://pastebin.com""" + if last_exception is None: + print "SHELL: No Errors yet (Phew)..." + else: + reason, event = last_exception.args + print "SHELL: Reason for the last error: '%s'" % reason + if ':' in reason: + msg, filename = reason.split( ':' ) + filename = filename.strip() + print "SHELL: Pasting log file to pastebin..." + + status, error, location = sendToPastebin( open( filename ).read() ) + + if status == 302: + print "SHELL: Pasted to %s" % location + else: + print "ERROR: %s %s" % ( status, error ) + + def patch( self, params ): + """Execute 'patch' command on a providee""" + self.build( params, "patch" ) + patch.usage = "<providee>" + + def parse( self, params ): + """(Re-)parse .bb files and calculate the dependency graph""" + cooker.status = cooker.ParsingStatus() + ignore = data.getVar("ASSUME_PROVIDED", make.cfg, 1) or "" + cooker.status.ignored_dependencies = set( ignore.split() ) + cooker.handleCollections( data.getVar("BBFILE_COLLECTIONS", make.cfg, 1) ) + + make.collect_bbfiles( cooker.myProgressCallback ) + cooker.buildDepgraph() + global parsed + parsed = True + print + + def getvar( self, params ): + """Dump the contents of an outer BitBake environment variable""" + var = params[0] + value = data.getVar( var, make.cfg, 1 ) + print value + getvar.usage = "<variable>" + + def peek( self, params ): + """Dump contents of variable defined in providee's metadata""" + name, var = params + bbfile = self._findProvider( name ) + if bbfile is not None: + value = make.pkgdata[bbfile].getVar( var, 1 ) + print value + else: + print "ERROR: Nothing provides '%s'" % name + peek.usage = "<providee> <variable>" + + def poke( self, params ): + """Set contents of variable defined in providee's metadata""" + name, var, value = params + bbfile = self._findProvider( name ) + d = make.pkgdata[bbfile] + if bbfile is not None: + data.setVar( var, value, d ) + + # mark the change semi persistant + make.pkgdata.setDirty(bbfile, d) + print "OK" + else: + print "ERROR: Nothing provides '%s'" % name + poke.usage = "<providee> <variable> <value>" + + def print_( self, params ): + """Dump all files or providers""" + what = params[0] + if what == "files": + self._checkParsed() + for key in make.pkgdata.keys(): print key + elif what == "providers": + self._checkParsed() + for key in cooker.status.providers.keys(): print key + else: + print "Usage: print %s" % self.print_.usage + print_.usage = "<files|providers>" + + def python( self, params ): + """Enter the expert mode - an interactive BitBake Python Interpreter""" + sys.ps1 = "EXPERT BB>>> " + sys.ps2 = "EXPERT BB... " + import code + interpreter = code.InteractiveConsole( dict( globals() ) ) + interpreter.interact( "SHELL: Expert Mode - BitBake Python %s\nType 'help' for more information, press CTRL-D to switch back to BBSHELL." % sys.version ) + + def showdata( self, params ): + """Execute 'showdata' on a providee""" + self.build( params, "showdata" ) + showdata.usage = "<providee>" + + def setVar( self, params ): + """Set an outer BitBake environment variable""" + var, value = params + data.setVar( var, value, make.cfg ) + print "OK" + setVar.usage = "<variable> <value>" + + def rebuild( self, params ): + """Clean and rebuild a .bb file or a providee""" + self.build( params, "clean" ) + self.build( params, "build" ) + rebuild.usage = "<providee>" + + def shell( self, params ): + """Execute a shell command and dump the output""" + if params != "": + print commands.getoutput( " ".join( params ) ) + shell.usage = "<...>" + + def stage( self, params ): + """Execute 'stage' on a providee""" + self.build( params, "stage" ) + stage.usage = "<providee>" + + def status( self, params ): + """<just for testing>""" + print "-" * 78 + print "build cache = '%s'" % cooker.build_cache + print "build cache fail = '%s'" % cooker.build_cache_fail + print "building list = '%s'" % cooker.building_list + print "build path = '%s'" % cooker.build_path + print "consider_msgs_cache = '%s'" % cooker.consider_msgs_cache + print "build stats = '%s'" % cooker.stats + if last_exception is not None: print "last_exception = '%s'" % repr( last_exception.args ) + print "memory output contents = '%s'" % self._shell.myout._buffer + + def test( self, params ): + """<just for testing>""" + print "testCommand called with '%s'" % params + + def unpack( self, params ): + """Execute 'unpack' on a providee""" + self.build( params, "unpack" ) + unpack.usage = "<providee>" + + def which( self, params ): + """Computes the providers for a given providee""" + item = params[0] + + self._checkParsed() + + preferred = data.getVar( "PREFERRED_PROVIDER_%s" % item, make.cfg, 1 ) + if not preferred: preferred = item + + try: + lv, lf, pv, pf = cooker.findBestProvider( preferred ) + except KeyError: + lv, lf, pv, pf = (None,)*4 + + try: + providers = cooker.status.providers[item] + except KeyError: + print "SHELL: ERROR: Nothing provides", preferred + else: + for provider in providers: + if provider == pf: provider = " (***) %s" % provider + else: provider = " %s" % provider + print provider + which.usage = "<providee>" + +########################################################################## +# Common helper functions +########################################################################## + +def completeFilePath( bbfile ): + """Get the complete bbfile path""" + if not make.pkgdata: return bbfile + for key in make.pkgdata.keys(): + if key.endswith( bbfile ): + return key + return bbfile + +def sendToPastebin( content ): + """Send content to http://www.pastebin.com""" + mydata = {} + mydata["parent_pid"] = "" + mydata["format"] = "bash" + mydata["code2"] = content + mydata["paste"] = "Send" + mydata["poster"] = "%s@%s" % ( os.environ.get( "USER", "unknown" ), socket.gethostname() or "unknown" ) + params = urllib.urlencode( mydata ) + headers = {"Content-type": "application/x-www-form-urlencoded","Accept": "text/plain"} + + conn = httplib.HTTPConnection( "pastebin.com:80" ) + conn.request("POST", "/", params, headers ) + + response = conn.getresponse() + conn.close() + + return response.status, response.reason, response.getheader( "location" ) or "unknown" + +def completer( text, state ): + """Return a possible readline completion""" + debugOut( "completer called with text='%s', state='%d'" % ( text, state ) ) + + if state == 0: + line = readline.get_line_buffer() + if " " in line: + line = line.split() + # we are in second (or more) argument + if line[0] in cmds and hasattr( cmds[line[0]][0], "usage" ): # known command and usage + u = getattr( cmds[line[0]][0], "usage" ).split()[0] + if u == "<variable>": + allmatches = make.cfg.keys() + elif u == "<bbfile>": + if make.pkgdata is None: allmatches = [ "(No Matches Available. Parsed yet?)" ] + else: allmatches = [ x.split("/")[-1] for x in make.pkgdata.keys() ] + elif u == "<providee>": + if make.pkgdata is None: allmatches = [ "(No Matches Available. Parsed yet?)" ] + else: allmatches = cooker.status.providers.iterkeys() + else: allmatches = [ "(No tab completion available for this command)" ] + else: allmatches = [ "(No tab completion available for this command)" ] + else: + # we are in first argument + allmatches = cmds.iterkeys() + + completer.matches = [ x for x in allmatches if x[:len(text)] == text ] + #print "completer.matches = '%s'" % completer.matches + if len( completer.matches ) > state: + return completer.matches[state] + else: + return None + +def debugOut( text ): + if debug: + sys.stderr.write( "( %s )\n" % text ) + +def columnize( alist, width = 80 ): + """ + A word-wrap function that preserves existing line breaks + and most spaces in the text. Expects that existing line + breaks are posix newlines (\n). + """ + return reduce(lambda line, word, width=width: '%s%s%s' % + (line, + ' \n'[(len(line[line.rfind('\n')+1:]) + + len(word.split('\n',1)[0] + ) >= width)], + word), + alist + ) + +########################################################################## +# Class MemoryOutput +########################################################################## + +class MemoryOutput: + """File-like output class buffering the output of the last 10 commands""" + def __init__( self, delegate ): + self.delegate = delegate + self._buffer = [] + self.text = [] + self._command = None + + def startCommand( self, command ): + self._command = command + self.text = [] + def endCommand( self ): + if self._command is not None: + if len( self._buffer ) == 10: del self._buffer[0] + self._buffer.append( ( self._command, self.text ) ) + def removeLast( self ): + if self._buffer: + del self._buffer[ len( self._buffer ) - 1 ] + self.text = [] + self._command = None + def lastBuffer( self ): + if self._buffer: + return self._buffer[ len( self._buffer ) -1 ][1] + def bufferedCommands( self ): + return [ cmd for cmd, output in self._buffer ] + def buffer( self, i ): + if i < len( self._buffer ): + return "BB>> %s\n%s" % ( self._buffer[i][0], "".join( self._buffer[i][1] ) ) + else: return "ERROR: Invalid buffer number. Buffer needs to be in (0, %d)" % ( len( self._buffer ) - 1 ) + def write( self, text ): + if self._command is not None and text != "BB>> ": self.text.append( text ) + if self.delegate is not None: self.delegate.write( text ) + def flush( self ): + return self.delegate.flush() + def fileno( self ): + return self.delegate.fileno() + def isatty( self ): + return self.delegate.isatty() + +########################################################################## +# Class BitBakeShell +########################################################################## + +class BitBakeShell: + + def __init__( self ): + """Register commands and set up readline""" + self.commands = BitBakeShellCommands( self ) + self.myout = MemoryOutput( sys.stdout ) + self.historyfilename = os.path.expanduser( "~/.bbsh_history" ) + self.startupfilename = os.path.expanduser( "~/.bbsh_startup" ) + + readline.set_completer( completer ) + readline.set_completer_delims( " " ) + readline.parse_and_bind("tab: complete") + + try: + readline.read_history_file( self.historyfilename ) + except IOError: + pass # It doesn't exist yet. + + print __credits__ + + def cleanup( self ): + """Write readline history and clean up resources""" + debugOut( "writing command history" ) + try: + readline.write_history_file( self.historyfilename ) + except: + print "SHELL: Unable to save command history" + + def registerCommand( self, command, function, numparams = 0, usage = "", helptext = "" ): + """Register a command""" + if usage == "": usage = command + if helptext == "": helptext = function.__doc__ or "<not yet documented>" + cmds[command] = ( function, numparams, usage, helptext ) + + def processCommand( self, command, params ): + """Process a command. Check number of params and print a usage string, if appropriate""" + debugOut( "processing command '%s'..." % command ) + try: + function, numparams, usage, helptext = cmds[command] + except KeyError: + print "SHELL: ERROR: '%s' command is not a valid command." % command + self.myout.removeLast() + else: + if (numparams != -1) and (not len( params ) == numparams): + print "Usage: '%s'" % usage + return + + result = function( self.commands, params ) + debugOut( "result was '%s'" % result ) + + def processStartupFile( self ): + """Read and execute all commands found in $HOME/.bbsh_startup""" + if os.path.exists( self.startupfilename ): + startupfile = open( self.startupfilename, "r" ) + # save_stdout = sys.stdout + # sys.stdout = open( "/dev/null", "w" ) + numCommands = 0 + for cmdline in startupfile.readlines(): + cmdline = cmdline.strip() + debugOut( "processing startup line '%s'" % cmdline ) + if not cmdline: + continue + if "|" in cmdline: + print >>save_stdout, "ERROR: ';' in startup file is not allowed. Ignoring line" + continue + allCommands = cmdline.split( ';' ) + for command in allCommands: + if ' ' in command: + self.processCommand( command.split()[0], command.split()[1:] ) + else: + self.processCommand( command, "" ) + numCommands += 1 + print "SHELL: Processed %d commands from '%s'" % ( numCommands, self.startupfilename ) + + def main( self ): + """The main command loop""" + while not leave_mainloop: + try: + sys.stdout = self.myout.delegate + cmdline = raw_input( "BB>> " ) + sys.stdout = self.myout + if cmdline: + allCommands = cmdline.split( ';' ) + for command in allCommands: + pipecmd = None + # + # special case for expert mode + if command == 'python': + sys.stdout = self.myout.delegate + self.processCommand( command, "" ) + sys.stdout = self.myout + else: + self.myout.startCommand( command ) + if '|' in command: # disable output + command, pipecmd = command.split( '|' ) + delegate = self.myout.delegate + self.myout.delegate = None + if ' ' in command: + self.processCommand( command.split()[0], command.split()[1:] ) + else: + self.processCommand( command, "" ) + self.myout.endCommand() + if pipecmd is not None: # restore output + self.myout.delegate = delegate + + pipe = popen2.Popen4( pipecmd ) + pipe.tochild.write( "\n".join( self.myout.lastBuffer() ) ) + pipe.tochild.close() + sys.stdout.write( pipe.fromchild.read() ) + # + except EOFError: + print + return + except KeyboardInterrupt: + print + +########################################################################## +# Start function - called from the BitBake command line utility +########################################################################## + +def start( aCooker ): + global cooker + cooker = aCooker + bbshell = BitBakeShell() + bbshell.processStartupFile() + bbshell.main() + bbshell.cleanup() + +if __name__ == "__main__": + print "SHELL: Sorry, this program should only be called by BitBake." |