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2708 lines
86 KiB
2708 lines
86 KiB
package DB;
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# Debugger for Perl 5.00x; perl5db.pl patch level:
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$VERSION = 1.07;
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$header = "perl5db.pl version $VERSION";
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#
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# This file is automatically included if you do perl -d.
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# It's probably not useful to include this yourself.
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#
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# Perl supplies the values for %sub. It effectively inserts
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# a &DB'DB(); in front of every place that can have a
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# breakpoint. Instead of a subroutine call it calls &DB::sub with
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# $DB::sub being the called subroutine. It also inserts a BEGIN
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# {require 'perl5db.pl'} before the first line.
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#
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# After each `require'd file is compiled, but before it is executed, a
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# call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the
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# $filename is the expanded name of the `require'd file (as found as
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# value of %INC).
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#
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# Additional services from Perl interpreter:
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#
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# if caller() is called from the package DB, it provides some
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# additional data.
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#
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# The array @{$main::{'_<'.$filename}} is the line-by-line contents of
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# $filename.
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#
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# The hash %{'_<'.$filename} contains breakpoints and action (it is
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# keyed by line number), and individual entries are settable (as
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# opposed to the whole hash). Only true/false is important to the
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# interpreter, though the values used by perl5db.pl have the form
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# "$break_condition\0$action". Values are magical in numeric context.
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#
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# The scalar ${'_<'.$filename} contains $filename.
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#
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# Note that no subroutine call is possible until &DB::sub is defined
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# (for subroutines defined outside of the package DB). In fact the same is
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# true if $deep is not defined.
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#
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# $Log: perldb.pl,v $
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#
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# At start reads $rcfile that may set important options. This file
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# may define a subroutine &afterinit that will be executed after the
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# debugger is initialized.
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#
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# After $rcfile is read reads environment variable PERLDB_OPTS and parses
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# it as a rest of `O ...' line in debugger prompt.
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#
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# The options that can be specified only at startup:
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# [To set in $rcfile, call &parse_options("optionName=new_value").]
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#
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# TTY - the TTY to use for debugging i/o.
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#
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# noTTY - if set, goes in NonStop mode. On interrupt if TTY is not set
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# uses the value of noTTY or "/tmp/perldbtty$$" to find TTY using
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# Term::Rendezvous. Current variant is to have the name of TTY in this
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# file.
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#
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# ReadLine - If false, dummy ReadLine is used, so you can debug
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# ReadLine applications.
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#
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# NonStop - if true, no i/o is performed until interrupt.
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#
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# LineInfo - file or pipe to print line number info to. If it is a
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# pipe, a short "emacs like" message is used.
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#
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# RemotePort - host:port to connect to on remote host for remote debugging.
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#
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# Example $rcfile: (delete leading hashes!)
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#
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# &parse_options("NonStop=1 LineInfo=db.out");
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# sub afterinit { $trace = 1; }
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#
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# The script will run without human intervention, putting trace
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# information into db.out. (If you interrupt it, you would better
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# reset LineInfo to something "interactive"!)
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#
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##################################################################
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# Enhanced by [email protected] (Ilya Zakharevich)
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# Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl
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# modified Perl debugger, to be run from Emacs in perldb-mode
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# Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990
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# Johan Vromans -- upgrade to 4.0 pl 10
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# Ilya Zakharevich -- patches after 5.001 (and some before ;-)
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# Changelog:
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# A lot of things changed after 0.94. First of all, core now informs
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# debugger about entry into XSUBs, overloaded operators, tied operations,
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# BEGIN and END. Handy with `O f=2'.
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# This can make debugger a little bit too verbose, please be patient
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# and report your problems promptly.
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# Now the option frame has 3 values: 0,1,2.
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# Note that if DESTROY returns a reference to the object (or object),
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# the deletion of data may be postponed until the next function call,
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# due to the need to examine the return value.
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# Changes: 0.95: `v' command shows versions.
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# Changes: 0.96: `v' command shows version of readline.
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# primitive completion works (dynamic variables, subs for `b' and `l',
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# options). Can `p %var'
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# Better help (`h <' now works). New commands <<, >>, {, {{.
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# {dump|print}_trace() coded (to be able to do it from <<cmd).
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# `c sub' documented.
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# At last enough magic combined to stop after the end of debuggee.
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# !! should work now (thanks to Emacs bracket matching an extra
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# `]' in a regexp is caught).
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# `L', `D' and `A' span files now (as documented).
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# Breakpoints in `require'd code are possible (used in `R').
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# Some additional words on internal work of debugger.
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# `b load filename' implemented.
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# `b postpone subr' implemented.
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# now only `q' exits debugger (overwriteable on $inhibit_exit).
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# When restarting debugger breakpoints/actions persist.
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# Buglet: When restarting debugger only one breakpoint/action per
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# autoloaded function persists.
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# Changes: 0.97: NonStop will not stop in at_exit().
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# Option AutoTrace implemented.
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# Trace printed differently if frames are printed too.
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# new `inhibitExit' option.
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# printing of a very long statement interruptible.
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# Changes: 0.98: New command `m' for printing possible methods
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# 'l -' is a synonim for `-'.
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# Cosmetic bugs in printing stack trace.
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# `frame' & 8 to print "expanded args" in stack trace.
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# Can list/break in imported subs.
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# new `maxTraceLen' option.
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# frame & 4 and frame & 8 granted.
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# new command `m'
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# nonstoppable lines do not have `:' near the line number.
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# `b compile subname' implemented.
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# Will not use $` any more.
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# `-' behaves sane now.
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# Changes: 0.99: Completion for `f', `m'.
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# `m' will remove duplicate names instead of duplicate functions.
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# `b load' strips trailing whitespace.
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# completion ignores leading `|'; takes into account current package
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# when completing a subroutine name (same for `l').
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# Changes: 1.07: Many fixed by tchrist 13-March-2000
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# BUG FIXES:
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# + Added bare mimimal security checks on perldb rc files, plus
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# comments on what else is needed.
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# + Fixed the ornaments that made "|h" completely unusable.
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# They are not used in print_help if they will hurt. Strip pod
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# if we're paging to less.
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# + Fixed mis-formatting of help messages caused by ornaments
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# to restore Larry's original formatting.
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# + Fixed many other formatting errors. The code is still suboptimal,
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# and needs a lot of work at restructuing. It's also misindented
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# in many places.
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# + Fixed bug where trying to look at an option like your pager
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# shows "1".
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# + Fixed some $? processing. Note: if you use csh or tcsh, you will
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# lose. You should consider shell escapes not using their shell,
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# or else not caring about detailed status. This should really be
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# unified into one place, too.
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# + Fixed bug where invisible trailing whitespace on commands hoses you,
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# tricking Perl into thinking you wern't calling a debugger command!
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# + Fixed bug where leading whitespace on commands hoses you. (One
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# suggests a leading semicolon or any other irrelevant non-whitespace
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# to indicate literal Perl code.)
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# + Fixed bugs that ate warnings due to wrong selected handle.
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# + Fixed a precedence bug on signal stuff.
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# + Fixed some unseemly wording.
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# + Fixed bug in help command trying to call perl method code.
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# + Fixed to call dumpvar from exception handler. SIGPIPE killed us.
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# ENHANCEMENTS:
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# + Added some comments. This code is still nasty spaghetti.
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# + Added message if you clear your pre/post command stacks which was
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# very easy to do if you just typed a bare >, <, or {. (A command
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# without an argument should *never* be a destructive action; this
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# API is fundamentally screwed up; likewise option setting, which
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# is equally buggered.)
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# + Added command stack dump on argument of "?" for >, <, or {.
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# + Added a semi-built-in doc viewer command that calls man with the
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# proper %Config::Config path (and thus gets caching, man -k, etc),
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# or else perldoc on obstreperous platforms.
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# + Added to and rearranged the help information.
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# + Detected apparent misuse of { ... } to declare a block; this used
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# to work but now is a command, and mysteriously gave no complaint.
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####################################################################
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# Needed for the statement after exec():
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BEGIN { $ini_warn = $^W; $^W = 0 } # Switch compilation warnings off until another BEGIN.
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local($^W) = 0; # Switch run-time warnings off during init.
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warn ( # Do not ;-)
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$dumpvar::hashDepth,
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$dumpvar::arrayDepth,
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$dumpvar::dumpDBFiles,
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$dumpvar::dumpPackages,
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$dumpvar::quoteHighBit,
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$dumpvar::printUndef,
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$dumpvar::globPrint,
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$dumpvar::usageOnly,
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@ARGS,
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$Carp::CarpLevel,
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$panic,
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$second_time,
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) if 0;
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# Command-line + PERLLIB:
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@ini_INC = @INC;
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# $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?!
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$trace = $signal = $single = 0; # Uninitialized warning suppression
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# (local $^W cannot help - other packages!).
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$inhibit_exit = $option{PrintRet} = 1;
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@options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages DumpReused
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compactDump veryCompact quote HighBit undefPrint
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globPrint PrintRet UsageOnly frame AutoTrace
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TTY noTTY ReadLine NonStop LineInfo maxTraceLen
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recallCommand ShellBang pager tkRunning ornaments
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signalLevel warnLevel dieLevel inhibit_exit
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ImmediateStop bareStringify
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RemotePort);
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%optionVars = (
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hashDepth => \$dumpvar::hashDepth,
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arrayDepth => \$dumpvar::arrayDepth,
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DumpDBFiles => \$dumpvar::dumpDBFiles,
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DumpPackages => \$dumpvar::dumpPackages,
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DumpReused => \$dumpvar::dumpReused,
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HighBit => \$dumpvar::quoteHighBit,
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undefPrint => \$dumpvar::printUndef,
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globPrint => \$dumpvar::globPrint,
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UsageOnly => \$dumpvar::usageOnly,
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bareStringify => \$dumpvar::bareStringify,
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frame => \$frame,
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AutoTrace => \$trace,
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inhibit_exit => \$inhibit_exit,
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maxTraceLen => \$maxtrace,
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ImmediateStop => \$ImmediateStop,
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RemotePort => \$remoteport,
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);
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%optionAction = (
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compactDump => \&dumpvar::compactDump,
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veryCompact => \&dumpvar::veryCompact,
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quote => \&dumpvar::quote,
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TTY => \&TTY,
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noTTY => \&noTTY,
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ReadLine => \&ReadLine,
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NonStop => \&NonStop,
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LineInfo => \&LineInfo,
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recallCommand => \&recallCommand,
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ShellBang => \&shellBang,
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pager => \&pager,
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signalLevel => \&signalLevel,
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warnLevel => \&warnLevel,
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dieLevel => \&dieLevel,
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tkRunning => \&tkRunning,
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ornaments => \&ornaments,
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RemotePort => \&RemotePort,
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);
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%optionRequire = (
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compactDump => 'dumpvar.pl',
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veryCompact => 'dumpvar.pl',
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quote => 'dumpvar.pl',
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);
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# These guys may be defined in $ENV{PERL5DB} :
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$rl = 1 unless defined $rl;
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$warnLevel = 0 unless defined $warnLevel;
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$dieLevel = 0 unless defined $dieLevel;
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$signalLevel = 1 unless defined $signalLevel;
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$pre = [] unless defined $pre;
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$post = [] unless defined $post;
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$pretype = [] unless defined $pretype;
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warnLevel($warnLevel);
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dieLevel($dieLevel);
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signalLevel($signalLevel);
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&pager(
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(defined($ENV{PAGER})
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? $ENV{PAGER}
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: ($^O eq 'os2'
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? 'cmd /c more'
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: 'more'))) unless defined $pager;
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setman();
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&recallCommand("!") unless defined $prc;
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&shellBang("!") unless defined $psh;
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$maxtrace = 400 unless defined $maxtrace;
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if (-e "/dev/tty") { # this is the wrong metric!
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$rcfile=".perldb";
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} else {
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$rcfile="perldb.ini";
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}
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# This isn't really safe, because there's a race
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# between checking and opening. The solution is to
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# open and fstat the handle, but then you have to read and
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# eval the contents. But then the silly thing gets
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# your lexical scope, which is unfortunately at best.
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sub safe_do {
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my $file = shift;
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# Just exactly what part of the word "CORE::" don't you understand?
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local $SIG{__WARN__};
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local $SIG{__DIE__};
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unless (is_safe_file($file)) {
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CORE::warn <<EO_GRIPE;
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perldb: Must not source insecure rcfile $file.
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You or the superuser must be the owner, and it must not
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be writable by anyone but its owner.
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EO_GRIPE
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return;
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}
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do $file;
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CORE::warn("perldb: couldn't parse $file: $@") if $@;
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}
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# Verifies that owner is either real user or superuser and that no
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# one but owner may write to it. This function is of limited use
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# when called on a path instead of upon a handle, because there are
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# no guarantees that filename (by dirent) whose file (by ino) is
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# eventually accessed is the same as the one tested.
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# Assumes that the file's existence is not in doubt.
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sub is_safe_file {
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my $path = shift;
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stat($path) || return; # mysteriously vaporized
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my($dev,$ino,$mode,$nlink,$uid,$gid) = stat(_);
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return 0 if $uid != 0 && $uid != $<;
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return 0 if $mode & 022;
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return 1;
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}
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if (-f $rcfile) {
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safe_do("./$rcfile");
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}
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elsif (defined $ENV{HOME} && -f "$ENV{HOME}/$rcfile") {
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safe_do("$ENV{HOME}/$rcfile");
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}
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elsif (defined $ENV{LOGDIR} && -f "$ENV{LOGDIR}/$rcfile") {
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safe_do("$ENV{LOGDIR}/$rcfile");
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}
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if (defined $ENV{PERLDB_OPTS}) {
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parse_options($ENV{PERLDB_OPTS});
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}
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# Here begin the unreadable code. It needs fixing.
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if (exists $ENV{PERLDB_RESTART}) {
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delete $ENV{PERLDB_RESTART};
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# $restart = 1;
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@hist = get_list('PERLDB_HIST');
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%break_on_load = get_list("PERLDB_ON_LOAD");
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%postponed = get_list("PERLDB_POSTPONE");
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my @had_breakpoints= get_list("PERLDB_VISITED");
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for (0 .. $#had_breakpoints) {
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my %pf = get_list("PERLDB_FILE_$_");
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$postponed_file{$had_breakpoints[$_]} = \%pf if %pf;
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}
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my %opt = get_list("PERLDB_OPT");
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my ($opt,$val);
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while (($opt,$val) = each %opt) {
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$val =~ s/[\\\']/\\$1/g;
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parse_options("$opt'$val'");
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}
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@INC = get_list("PERLDB_INC");
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@ini_INC = @INC;
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$pretype = [get_list("PERLDB_PRETYPE")];
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$pre = [get_list("PERLDB_PRE")];
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$post = [get_list("PERLDB_POST")];
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@typeahead = get_list("PERLDB_TYPEAHEAD", @typeahead);
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}
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if ($notty) {
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$runnonstop = 1;
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} else {
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# Is Perl being run from a slave editor or graphical debugger?
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$slave_editor = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs'));
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$rl = 0, shift(@main::ARGV) if $slave_editor;
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#require Term::ReadLine;
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if ($^O eq 'cygwin') {
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# /dev/tty is binary. use stdin for textmode
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undef $console;
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} elsif (-e "/dev/tty") {
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$console = "/dev/tty";
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} elsif ($^O eq 'dos' or -e "con" or $^O eq 'MSWin32') {
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$console = "con";
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} elsif ($^O eq 'MacOS') {
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if ($MacPerl::Version !~ /MPW/) {
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$console = "Dev:Console:Perl Debug"; # Separate window for application
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} else {
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$console = "Dev:Console";
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}
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} else {
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$console = "sys\$command";
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}
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if (($^O eq 'MSWin32') and ($slave_editor or defined $ENV{EMACS})) {
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$console = undef;
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}
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# Around a bug:
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if (defined $ENV{OS2_SHELL} and ($slave_editor or $ENV{WINDOWID})) { # In OS/2
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$console = undef;
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}
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if ($^O eq 'epoc') {
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$console = undef;
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}
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$console = $tty if defined $tty;
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if (defined $remoteport) {
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require IO::Socket;
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$OUT = new IO::Socket::INET( Timeout => '10',
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PeerAddr => $remoteport,
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Proto => 'tcp',
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);
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if (!$OUT) { die "Unable to connect to remote host: $remoteport\n"; }
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$IN = $OUT;
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}
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else {
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if (defined $console) {
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open(IN,"+<$console") || open(IN,"<$console") || open(IN,"<&STDIN");
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open(OUT,"+>$console") || open(OUT,">$console") || open(OUT,">&STDERR")
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|| open(OUT,">&STDOUT"); # so we don't dongle stdout
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} else {
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open(IN,"<&STDIN");
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open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout
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$console = 'STDIN/OUT';
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}
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|
# so open("|more") can read from STDOUT and so we don't dingle stdin
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$IN = \*IN;
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$OUT = \*OUT;
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}
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select($OUT);
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$| = 1; # for DB::OUT
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select(STDOUT);
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$LINEINFO = $OUT unless defined $LINEINFO;
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$lineinfo = $console unless defined $lineinfo;
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$| = 1; # for real STDOUT
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$header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/;
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|
unless ($runnonstop) {
|
|
print $OUT "\nLoading DB routines from $header\n";
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print $OUT ("Editor support ",
|
|
$slave_editor ? "enabled" : "available",
|
|
".\n");
|
|
print $OUT "\nEnter h or `h h' for help, or `$doccmd perldebug' for more help.\n\n";
|
|
}
|
|
}
|
|
|
|
@ARGS = @ARGV;
|
|
for (@args) {
|
|
s/\'/\\\'/g;
|
|
s/(.*)/'$1'/ unless /^-?[\d.]+$/;
|
|
}
|
|
|
|
if (defined &afterinit) { # May be defined in $rcfile
|
|
&afterinit();
|
|
}
|
|
|
|
$I_m_init = 1;
|
|
|
|
############################################################ Subroutines
|
|
|
|
sub DB {
|
|
# _After_ the perl program is compiled, $single is set to 1:
|
|
if ($single and not $second_time++) {
|
|
if ($runnonstop) { # Disable until signal
|
|
for ($i=0; $i <= $stack_depth; ) {
|
|
$stack[$i++] &= ~1;
|
|
}
|
|
$single = 0;
|
|
# return; # Would not print trace!
|
|
} elsif ($ImmediateStop) {
|
|
$ImmediateStop = 0;
|
|
$signal = 1;
|
|
}
|
|
}
|
|
$runnonstop = 0 if $single or $signal; # Disable it if interactive.
|
|
&save;
|
|
($package, $filename, $line) = caller;
|
|
$filename_ini = $filename;
|
|
$usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' .
|
|
"package $package;"; # this won't let them modify, alas
|
|
local(*dbline) = $main::{'_<' . $filename};
|
|
$max = $#dbline;
|
|
if (($stop,$action) = split(/\0/,$dbline{$line})) {
|
|
if ($stop eq '1') {
|
|
$signal |= 1;
|
|
} elsif ($stop) {
|
|
$evalarg = "\$DB::signal |= 1 if do {$stop}"; &eval;
|
|
$dbline{$line} =~ s/;9($|\0)/$1/;
|
|
}
|
|
}
|
|
my $was_signal = $signal;
|
|
if ($trace & 2) {
|
|
for (my $n = 0; $n <= $#to_watch; $n++) {
|
|
$evalarg = $to_watch[$n];
|
|
local $onetimeDump; # Do not output results
|
|
my ($val) = &eval; # Fix context (&eval is doing array)?
|
|
$val = ( (defined $val) ? "'$val'" : 'undef' );
|
|
if ($val ne $old_watch[$n]) {
|
|
$signal = 1;
|
|
print $OUT <<EOP;
|
|
Watchpoint $n:\t$to_watch[$n] changed:
|
|
old value:\t$old_watch[$n]
|
|
new value:\t$val
|
|
EOP
|
|
$old_watch[$n] = $val;
|
|
}
|
|
}
|
|
}
|
|
if ($trace & 4) { # User-installed watch
|
|
return if watchfunction($package, $filename, $line)
|
|
and not $single and not $was_signal and not ($trace & ~4);
|
|
}
|
|
$was_signal = $signal;
|
|
$signal = 0;
|
|
if ($single || ($trace & 1) || $was_signal) {
|
|
if ($slave_editor) {
|
|
$position = "\032\032$filename:$line:0\n";
|
|
print $LINEINFO $position;
|
|
} elsif ($package eq 'DB::fake') {
|
|
$term || &setterm;
|
|
print_help(<<EOP);
|
|
Debugged program terminated. Use B<q> to quit or B<R> to restart,
|
|
use B<O> I<inhibit_exit> to avoid stopping after program termination,
|
|
B<h q>, B<h R> or B<h O> to get additional info.
|
|
EOP
|
|
$package = 'main';
|
|
$usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' .
|
|
"package $package;"; # this won't let them modify, alas
|
|
} else {
|
|
$sub =~ s/\'/::/;
|
|
$prefix = $sub =~ /::/ ? "" : "${'package'}::";
|
|
$prefix .= "$sub($filename:";
|
|
$after = ($dbline[$line] =~ /\n$/ ? '' : "\n");
|
|
if (length($prefix) > 30) {
|
|
$position = "$prefix$line):\n$line:\t$dbline[$line]$after";
|
|
$prefix = "";
|
|
$infix = ":\t";
|
|
} else {
|
|
$infix = "):\t";
|
|
$position = "$prefix$line$infix$dbline[$line]$after";
|
|
}
|
|
if ($frame) {
|
|
print $LINEINFO ' ' x $stack_depth, "$line:\t$dbline[$line]$after";
|
|
} else {
|
|
print $LINEINFO $position;
|
|
}
|
|
for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi
|
|
last if $dbline[$i] =~ /^\s*[\;\}\#\n]/;
|
|
last if $signal;
|
|
$after = ($dbline[$i] =~ /\n$/ ? '' : "\n");
|
|
$incr_pos = "$prefix$i$infix$dbline[$i]$after";
|
|
$position .= $incr_pos;
|
|
if ($frame) {
|
|
print $LINEINFO ' ' x $stack_depth, "$i:\t$dbline[$i]$after";
|
|
} else {
|
|
print $LINEINFO $incr_pos;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
$evalarg = $action, &eval if $action;
|
|
if ($single || $was_signal) {
|
|
local $level = $level + 1;
|
|
foreach $evalarg (@$pre) {
|
|
&eval;
|
|
}
|
|
print $OUT $stack_depth . " levels deep in subroutine calls!\n"
|
|
if $single & 4;
|
|
$start = $line;
|
|
$incr = -1; # for backward motion.
|
|
@typeahead = (@$pretype, @typeahead);
|
|
CMD:
|
|
while (($term || &setterm),
|
|
($term_pid == $$ or &resetterm),
|
|
defined ($cmd=&readline(" DB" . ('<' x $level) .
|
|
($#hist+1) . ('>' x $level) .
|
|
" ")))
|
|
{
|
|
$single = 0;
|
|
$signal = 0;
|
|
$cmd =~ s/\\$/\n/ && do {
|
|
$cmd .= &readline(" cont: ");
|
|
redo CMD;
|
|
};
|
|
$cmd =~ /^$/ && ($cmd = $laststep);
|
|
push(@hist,$cmd) if length($cmd) > 1;
|
|
PIPE: {
|
|
$cmd =~ s/^\s+//s; # trim annoying leading whitespace
|
|
$cmd =~ s/\s+$//s; # trim annoying trailing whitespace
|
|
($i) = split(/\s+/,$cmd);
|
|
if ($alias{$i}) {
|
|
# squelch the sigmangler
|
|
local $SIG{__DIE__};
|
|
local $SIG{__WARN__};
|
|
eval "\$cmd =~ $alias{$i}";
|
|
if ($@) {
|
|
print $OUT "Couldn't evaluate `$i' alias: $@";
|
|
next CMD;
|
|
}
|
|
}
|
|
$cmd =~ /^q$/ && ($fall_off_end = 1) && exit $?;
|
|
$cmd =~ /^h$/ && do {
|
|
print_help($help);
|
|
next CMD; };
|
|
$cmd =~ /^h\s+h$/ && do {
|
|
print_help($summary);
|
|
next CMD; };
|
|
# support long commands; otherwise bogus errors
|
|
# happen when you ask for h on <CR> for example
|
|
$cmd =~ /^h\s+(\S.*)$/ && do {
|
|
my $asked = $1; # for proper errmsg
|
|
my $qasked = quotemeta($asked); # for searching
|
|
# XXX: finds CR but not <CR>
|
|
if ($help =~ /^<?(?:[IB]<)$qasked/m) {
|
|
while ($help =~ /^(<?(?:[IB]<)$qasked([\s\S]*?)\n)(?!\s)/mg) {
|
|
print_help($1);
|
|
}
|
|
} else {
|
|
print_help("B<$asked> is not a debugger command.\n");
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^t$/ && do {
|
|
$trace ^= 1;
|
|
print $OUT "Trace = " .
|
|
(($trace & 1) ? "on" : "off" ) . "\n";
|
|
next CMD; };
|
|
$cmd =~ /^S(\s+(!)?(.+))?$/ && do {
|
|
$Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1;
|
|
foreach $subname (sort(keys %sub)) {
|
|
if ($Snocheck or $Srev^($subname =~ /$Spatt/)) {
|
|
print $OUT $subname,"\n";
|
|
}
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^v$/ && do {
|
|
list_versions(); next CMD};
|
|
$cmd =~ s/^X\b/V $package/;
|
|
$cmd =~ /^V$/ && do {
|
|
$cmd = "V $package"; };
|
|
$cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do {
|
|
local ($savout) = select($OUT);
|
|
$packname = $1;
|
|
@vars = split(' ',$2);
|
|
do 'dumpvar.pl' unless defined &main::dumpvar;
|
|
if (defined &main::dumpvar) {
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
# must detect sigpipe failures
|
|
eval { &main::dumpvar($packname,@vars) };
|
|
if ($@) {
|
|
die unless $@ =~ /dumpvar print failed/;
|
|
}
|
|
} else {
|
|
print $OUT "dumpvar.pl not available.\n";
|
|
}
|
|
select ($savout);
|
|
next CMD; };
|
|
$cmd =~ s/^x\b/ / && do { # So that will be evaled
|
|
$onetimeDump = 'dump'; };
|
|
$cmd =~ s/^m\s+([\w:]+)\s*$/ / && do {
|
|
methods($1); next CMD};
|
|
$cmd =~ s/^m\b/ / && do { # So this will be evaled
|
|
$onetimeDump = 'methods'; };
|
|
$cmd =~ /^f\b\s*(.*)/ && do {
|
|
$file = $1;
|
|
$file =~ s/\s+$//;
|
|
if (!$file) {
|
|
print $OUT "The old f command is now the r command.\n";
|
|
print $OUT "The new f command switches filenames.\n";
|
|
next CMD;
|
|
}
|
|
if (!defined $main::{'_<' . $file}) {
|
|
if (($try) = grep(m#^_<.*$file#, keys %main::)) {{
|
|
$try = substr($try,2);
|
|
print $OUT "Choosing $try matching `$file':\n";
|
|
$file = $try;
|
|
}}
|
|
}
|
|
if (!defined $main::{'_<' . $file}) {
|
|
print $OUT "No file matching `$file' is loaded.\n";
|
|
next CMD;
|
|
} elsif ($file ne $filename) {
|
|
*dbline = $main::{'_<' . $file};
|
|
$max = $#dbline;
|
|
$filename = $file;
|
|
$start = 1;
|
|
$cmd = "l";
|
|
} else {
|
|
print $OUT "Already in $file.\n";
|
|
next CMD;
|
|
}
|
|
};
|
|
$cmd =~ s/^l\s+-\s*$/-/;
|
|
$cmd =~ /^([lb])\b\s*(\$.*)/s && do {
|
|
$evalarg = $2;
|
|
my ($s) = &eval;
|
|
print($OUT "Error: $@\n"), next CMD if $@;
|
|
$s = CvGV_name($s);
|
|
print($OUT "Interpreted as: $1 $s\n");
|
|
$cmd = "$1 $s";
|
|
};
|
|
$cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*(\[.*\])?)/s && do {
|
|
$subname = $1;
|
|
$subname =~ s/\'/::/;
|
|
$subname = $package."::".$subname
|
|
unless $subname =~ /::/;
|
|
$subname = "main".$subname if substr($subname,0,2) eq "::";
|
|
@pieces = split(/:/,find_sub($subname) || $sub{$subname});
|
|
$subrange = pop @pieces;
|
|
$file = join(':', @pieces);
|
|
if ($file ne $filename) {
|
|
print $OUT "Switching to file '$file'.\n"
|
|
unless $slave_editor;
|
|
*dbline = $main::{'_<' . $file};
|
|
$max = $#dbline;
|
|
$filename = $file;
|
|
}
|
|
if ($subrange) {
|
|
if (eval($subrange) < -$window) {
|
|
$subrange =~ s/-.*/+/;
|
|
}
|
|
$cmd = "l $subrange";
|
|
} else {
|
|
print $OUT "Subroutine $subname not found.\n";
|
|
next CMD;
|
|
} };
|
|
$cmd =~ /^\.$/ && do {
|
|
$incr = -1; # for backward motion.
|
|
$start = $line;
|
|
$filename = $filename_ini;
|
|
*dbline = $main::{'_<' . $filename};
|
|
$max = $#dbline;
|
|
print $LINEINFO $position;
|
|
next CMD };
|
|
$cmd =~ /^w\b\s*(\d*)$/ && do {
|
|
$incr = $window - 1;
|
|
$start = $1 if $1;
|
|
$start -= $preview;
|
|
#print $OUT 'l ' . $start . '-' . ($start + $incr);
|
|
$cmd = 'l ' . $start . '-' . ($start + $incr); };
|
|
$cmd =~ /^-$/ && do {
|
|
$start -= $incr + $window + 1;
|
|
$start = 1 if $start <= 0;
|
|
$incr = $window - 1;
|
|
$cmd = 'l ' . ($start) . '+'; };
|
|
$cmd =~ /^l$/ && do {
|
|
$incr = $window - 1;
|
|
$cmd = 'l ' . $start . '-' . ($start + $incr); };
|
|
$cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do {
|
|
$start = $1 if $1;
|
|
$incr = $2;
|
|
$incr = $window - 1 unless $incr;
|
|
$cmd = 'l ' . $start . '-' . ($start + $incr); };
|
|
$cmd =~ /^l\b\s*((-?[\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do {
|
|
$end = (!defined $2) ? $max : ($4 ? $4 : $2);
|
|
$end = $max if $end > $max;
|
|
$i = $2;
|
|
$i = $line if $i eq '.';
|
|
$i = 1 if $i < 1;
|
|
$incr = $end - $i;
|
|
if ($slave_editor) {
|
|
print $OUT "\032\032$filename:$i:0\n";
|
|
$i = $end;
|
|
} else {
|
|
for (; $i <= $end; $i++) {
|
|
($stop,$action) = split(/\0/, $dbline{$i});
|
|
$arrow = ($i==$line
|
|
and $filename eq $filename_ini)
|
|
? '==>'
|
|
: ($dbline[$i]+0 ? ':' : ' ') ;
|
|
$arrow .= 'b' if $stop;
|
|
$arrow .= 'a' if $action;
|
|
print $OUT "$i$arrow\t", $dbline[$i];
|
|
$i++, last if $signal;
|
|
}
|
|
print $OUT "\n" unless $dbline[$i-1] =~ /\n$/;
|
|
}
|
|
$start = $i; # remember in case they want more
|
|
$start = $max if $start > $max;
|
|
next CMD; };
|
|
$cmd =~ /^D$/ && do {
|
|
print $OUT "Deleting all breakpoints...\n";
|
|
my $file;
|
|
for $file (keys %had_breakpoints) {
|
|
local *dbline = $main::{'_<' . $file};
|
|
my $max = $#dbline;
|
|
my $was;
|
|
|
|
for ($i = 1; $i <= $max ; $i++) {
|
|
if (defined $dbline{$i}) {
|
|
$dbline{$i} =~ s/^[^\0]+//;
|
|
if ($dbline{$i} =~ s/^\0?$//) {
|
|
delete $dbline{$i};
|
|
}
|
|
}
|
|
}
|
|
|
|
if (not $had_breakpoints{$file} &= ~1) {
|
|
delete $had_breakpoints{$file};
|
|
}
|
|
}
|
|
undef %postponed;
|
|
undef %postponed_file;
|
|
undef %break_on_load;
|
|
next CMD; };
|
|
$cmd =~ /^L$/ && do {
|
|
my $file;
|
|
for $file (keys %had_breakpoints) {
|
|
local *dbline = $main::{'_<' . $file};
|
|
my $max = $#dbline;
|
|
my $was;
|
|
|
|
for ($i = 1; $i <= $max; $i++) {
|
|
if (defined $dbline{$i}) {
|
|
print $OUT "$file:\n" unless $was++;
|
|
print $OUT " $i:\t", $dbline[$i];
|
|
($stop,$action) = split(/\0/, $dbline{$i});
|
|
print $OUT " break if (", $stop, ")\n"
|
|
if $stop;
|
|
print $OUT " action: ", $action, "\n"
|
|
if $action;
|
|
last if $signal;
|
|
}
|
|
}
|
|
}
|
|
if (%postponed) {
|
|
print $OUT "Postponed breakpoints in subroutines:\n";
|
|
my $subname;
|
|
for $subname (keys %postponed) {
|
|
print $OUT " $subname\t$postponed{$subname}\n";
|
|
last if $signal;
|
|
}
|
|
}
|
|
my @have = map { # Combined keys
|
|
keys %{$postponed_file{$_}}
|
|
} keys %postponed_file;
|
|
if (@have) {
|
|
print $OUT "Postponed breakpoints in files:\n";
|
|
my ($file, $line);
|
|
for $file (keys %postponed_file) {
|
|
my $db = $postponed_file{$file};
|
|
print $OUT " $file:\n";
|
|
for $line (sort {$a <=> $b} keys %$db) {
|
|
print $OUT " $line:\n";
|
|
my ($stop,$action) = split(/\0/, $$db{$line});
|
|
print $OUT " break if (", $stop, ")\n"
|
|
if $stop;
|
|
print $OUT " action: ", $action, "\n"
|
|
if $action;
|
|
last if $signal;
|
|
}
|
|
last if $signal;
|
|
}
|
|
}
|
|
if (%break_on_load) {
|
|
print $OUT "Breakpoints on load:\n";
|
|
my $file;
|
|
for $file (keys %break_on_load) {
|
|
print $OUT " $file\n";
|
|
last if $signal;
|
|
}
|
|
}
|
|
if ($trace & 2) {
|
|
print $OUT "Watch-expressions:\n";
|
|
my $expr;
|
|
for $expr (@to_watch) {
|
|
print $OUT " $expr\n";
|
|
last if $signal;
|
|
}
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^b\b\s*load\b\s*(.*)/ && do {
|
|
my $file = $1; $file =~ s/\s+$//;
|
|
{
|
|
$break_on_load{$file} = 1;
|
|
$break_on_load{$::INC{$file}} = 1 if $::INC{$file};
|
|
$file .= '.pm', redo unless $file =~ /\./;
|
|
}
|
|
$had_breakpoints{$file} |= 1;
|
|
print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n";
|
|
next CMD; };
|
|
$cmd =~ /^b\b\s*(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
|
|
my $cond = length $3 ? $3 : '1';
|
|
my ($subname, $break) = ($2, $1 eq 'postpone');
|
|
$subname =~ s/\'/::/g;
|
|
$subname = "${'package'}::" . $subname
|
|
unless $subname =~ /::/;
|
|
$subname = "main".$subname if substr($subname,0,2) eq "::";
|
|
$postponed{$subname} = $break
|
|
? "break +0 if $cond" : "compile";
|
|
next CMD; };
|
|
$cmd =~ /^b\b\s*([':A-Za-z_][':\w]*(?:\[.*\])?)\s*(.*)/ && do {
|
|
$subname = $1;
|
|
$cond = length $2 ? $2 : '1';
|
|
$subname =~ s/\'/::/g;
|
|
$subname = "${'package'}::" . $subname
|
|
unless $subname =~ /::/;
|
|
$subname = "main".$subname if substr($subname,0,2) eq "::";
|
|
# Filename below can contain ':'
|
|
($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
|
|
$i += 0;
|
|
if ($i) {
|
|
local $filename = $file;
|
|
local *dbline = $main::{'_<' . $filename};
|
|
$had_breakpoints{$filename} |= 1;
|
|
$max = $#dbline;
|
|
++$i while $dbline[$i] == 0 && $i < $max;
|
|
$dbline{$i} =~ s/^[^\0]*/$cond/;
|
|
} else {
|
|
print $OUT "Subroutine $subname not found.\n";
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do {
|
|
$i = $1 || $line;
|
|
$cond = length $2 ? $2 : '1';
|
|
if ($dbline[$i] == 0) {
|
|
print $OUT "Line $i not breakable.\n";
|
|
} else {
|
|
$had_breakpoints{$filename} |= 1;
|
|
$dbline{$i} =~ s/^[^\0]*/$cond/;
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^d\b\s*(\d*)/ && do {
|
|
$i = $1 || $line;
|
|
if ($dbline[$i] == 0) {
|
|
print $OUT "Line $i not breakable.\n";
|
|
} else {
|
|
$dbline{$i} =~ s/^[^\0]*//;
|
|
delete $dbline{$i} if $dbline{$i} eq '';
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^A$/ && do {
|
|
print $OUT "Deleting all actions...\n";
|
|
my $file;
|
|
for $file (keys %had_breakpoints) {
|
|
local *dbline = $main::{'_<' . $file};
|
|
my $max = $#dbline;
|
|
my $was;
|
|
|
|
for ($i = 1; $i <= $max ; $i++) {
|
|
if (defined $dbline{$i}) {
|
|
$dbline{$i} =~ s/\0[^\0]*//;
|
|
delete $dbline{$i} if $dbline{$i} eq '';
|
|
}
|
|
}
|
|
|
|
unless ($had_breakpoints{$file} &= ~2) {
|
|
delete $had_breakpoints{$file};
|
|
}
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^O\s*$/ && do {
|
|
for (@options) {
|
|
&dump_option($_);
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^O\s*(\S.*)/ && do {
|
|
parse_options($1);
|
|
next CMD; };
|
|
$cmd =~ /^\<\<\s*(.*)/ && do { # \<\< for CPerl sake: not HERE
|
|
push @$pre, action($1);
|
|
next CMD; };
|
|
$cmd =~ /^>>\s*(.*)/ && do {
|
|
push @$post, action($1);
|
|
next CMD; };
|
|
$cmd =~ /^<\s*(.*)/ && do {
|
|
unless ($1) {
|
|
print $OUT "All < actions cleared.\n";
|
|
$pre = [];
|
|
next CMD;
|
|
}
|
|
if ($1 eq '?') {
|
|
unless (@$pre) {
|
|
print $OUT "No pre-prompt Perl actions.\n";
|
|
next CMD;
|
|
}
|
|
print $OUT "Perl commands run before each prompt:\n";
|
|
for my $action ( @$pre ) {
|
|
print $OUT "\t< -- $action\n";
|
|
}
|
|
next CMD;
|
|
}
|
|
$pre = [action($1)];
|
|
next CMD; };
|
|
$cmd =~ /^>\s*(.*)/ && do {
|
|
unless ($1) {
|
|
print $OUT "All > actions cleared.\n";
|
|
$post = [];
|
|
next CMD;
|
|
}
|
|
if ($1 eq '?') {
|
|
unless (@$post) {
|
|
print $OUT "No post-prompt Perl actions.\n";
|
|
next CMD;
|
|
}
|
|
print $OUT "Perl commands run after each prompt:\n";
|
|
for my $action ( @$post ) {
|
|
print $OUT "\t> -- $action\n";
|
|
}
|
|
next CMD;
|
|
}
|
|
$post = [action($1)];
|
|
next CMD; };
|
|
$cmd =~ /^\{\{\s*(.*)/ && do {
|
|
if ($cmd =~ /^\{.*\}$/ && unbalanced(substr($cmd,2))) {
|
|
print $OUT "{{ is now a debugger command\n",
|
|
"use `;{{' if you mean Perl code\n";
|
|
$cmd = "h {{";
|
|
redo CMD;
|
|
}
|
|
push @$pretype, $1;
|
|
next CMD; };
|
|
$cmd =~ /^\{\s*(.*)/ && do {
|
|
unless ($1) {
|
|
print $OUT "All { actions cleared.\n";
|
|
$pretype = [];
|
|
next CMD;
|
|
}
|
|
if ($1 eq '?') {
|
|
unless (@$pretype) {
|
|
print $OUT "No pre-prompt debugger actions.\n";
|
|
next CMD;
|
|
}
|
|
print $OUT "Debugger commands run before each prompt:\n";
|
|
for my $action ( @$pretype ) {
|
|
print $OUT "\t{ -- $action\n";
|
|
}
|
|
next CMD;
|
|
}
|
|
if ($cmd =~ /^\{.*\}$/ && unbalanced(substr($cmd,1))) {
|
|
print $OUT "{ is now a debugger command\n",
|
|
"use `;{' if you mean Perl code\n";
|
|
$cmd = "h {";
|
|
redo CMD;
|
|
}
|
|
$pretype = [$1];
|
|
next CMD; };
|
|
$cmd =~ /^a\b\s*(\d*)\s*(.*)/ && do {
|
|
$i = $1 || $line; $j = $2;
|
|
if (length $j) {
|
|
if ($dbline[$i] == 0) {
|
|
print $OUT "Line $i may not have an action.\n";
|
|
} else {
|
|
$had_breakpoints{$filename} |= 2;
|
|
$dbline{$i} =~ s/\0[^\0]*//;
|
|
$dbline{$i} .= "\0" . action($j);
|
|
}
|
|
} else {
|
|
$dbline{$i} =~ s/\0[^\0]*//;
|
|
delete $dbline{$i} if $dbline{$i} eq '';
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^n$/ && do {
|
|
end_report(), next CMD if $finished and $level <= 1;
|
|
$single = 2;
|
|
$laststep = $cmd;
|
|
last CMD; };
|
|
$cmd =~ /^s$/ && do {
|
|
end_report(), next CMD if $finished and $level <= 1;
|
|
$single = 1;
|
|
$laststep = $cmd;
|
|
last CMD; };
|
|
$cmd =~ /^c\b\s*([\w:]*)\s*$/ && do {
|
|
end_report(), next CMD if $finished and $level <= 1;
|
|
$subname = $i = $1;
|
|
# Probably not needed, since we finish an interactive
|
|
# sub-session anyway...
|
|
# local $filename = $filename;
|
|
# local *dbline = *dbline; # XXX Would this work?!
|
|
if ($i =~ /\D/) { # subroutine name
|
|
$subname = $package."::".$subname
|
|
unless $subname =~ /::/;
|
|
($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
|
|
$i += 0;
|
|
if ($i) {
|
|
$filename = $file;
|
|
*dbline = $main::{'_<' . $filename};
|
|
$had_breakpoints{$filename} |= 1;
|
|
$max = $#dbline;
|
|
++$i while $dbline[$i] == 0 && $i < $max;
|
|
} else {
|
|
print $OUT "Subroutine $subname not found.\n";
|
|
next CMD;
|
|
}
|
|
}
|
|
if ($i) {
|
|
if ($dbline[$i] == 0) {
|
|
print $OUT "Line $i not breakable.\n";
|
|
next CMD;
|
|
}
|
|
$dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p.
|
|
}
|
|
for ($i=0; $i <= $stack_depth; ) {
|
|
$stack[$i++] &= ~1;
|
|
}
|
|
last CMD; };
|
|
$cmd =~ /^r$/ && do {
|
|
end_report(), next CMD if $finished and $level <= 1;
|
|
$stack[$stack_depth] |= 1;
|
|
$doret = $option{PrintRet} ? $stack_depth - 1 : -2;
|
|
last CMD; };
|
|
$cmd =~ /^R$/ && do {
|
|
print $OUT "Warning: some settings and command-line options may be lost!\n";
|
|
my (@script, @flags, $cl);
|
|
push @flags, '-w' if $ini_warn;
|
|
# Put all the old includes at the start to get
|
|
# the same debugger.
|
|
for (@ini_INC) {
|
|
push @flags, '-I', $_;
|
|
}
|
|
# Arrange for setting the old INC:
|
|
set_list("PERLDB_INC", @ini_INC);
|
|
if ($0 eq '-e') {
|
|
for (1..$#{'::_<-e'}) { # The first line is PERL5DB
|
|
chomp ($cl = ${'::_<-e'}[$_]);
|
|
push @script, '-e', $cl;
|
|
}
|
|
} else {
|
|
@script = $0;
|
|
}
|
|
set_list("PERLDB_HIST",
|
|
$term->Features->{getHistory}
|
|
? $term->GetHistory : @hist);
|
|
my @had_breakpoints = keys %had_breakpoints;
|
|
set_list("PERLDB_VISITED", @had_breakpoints);
|
|
set_list("PERLDB_OPT", %option);
|
|
set_list("PERLDB_ON_LOAD", %break_on_load);
|
|
my @hard;
|
|
for (0 .. $#had_breakpoints) {
|
|
my $file = $had_breakpoints[$_];
|
|
*dbline = $main::{'_<' . $file};
|
|
next unless %dbline or $postponed_file{$file};
|
|
(push @hard, $file), next
|
|
if $file =~ /^\(eval \d+\)$/;
|
|
my @add;
|
|
@add = %{$postponed_file{$file}}
|
|
if $postponed_file{$file};
|
|
set_list("PERLDB_FILE_$_", %dbline, @add);
|
|
}
|
|
for (@hard) { # Yes, really-really...
|
|
# Find the subroutines in this eval
|
|
*dbline = $main::{'_<' . $_};
|
|
my ($quoted, $sub, %subs, $line) = quotemeta $_;
|
|
for $sub (keys %sub) {
|
|
next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/;
|
|
$subs{$sub} = [$1, $2];
|
|
}
|
|
unless (%subs) {
|
|
print $OUT
|
|
"No subroutines in $_, ignoring breakpoints.\n";
|
|
next;
|
|
}
|
|
LINES: for $line (keys %dbline) {
|
|
# One breakpoint per sub only:
|
|
my ($offset, $sub, $found);
|
|
SUBS: for $sub (keys %subs) {
|
|
if ($subs{$sub}->[1] >= $line # Not after the subroutine
|
|
and (not defined $offset # Not caught
|
|
or $offset < 0 )) { # or badly caught
|
|
$found = $sub;
|
|
$offset = $line - $subs{$sub}->[0];
|
|
$offset = "+$offset", last SUBS if $offset >= 0;
|
|
}
|
|
}
|
|
if (defined $offset) {
|
|
$postponed{$found} =
|
|
"break $offset if $dbline{$line}";
|
|
} else {
|
|
print $OUT "Breakpoint in $_:$line ignored: after all the subroutines.\n";
|
|
}
|
|
}
|
|
}
|
|
set_list("PERLDB_POSTPONE", %postponed);
|
|
set_list("PERLDB_PRETYPE", @$pretype);
|
|
set_list("PERLDB_PRE", @$pre);
|
|
set_list("PERLDB_POST", @$post);
|
|
set_list("PERLDB_TYPEAHEAD", @typeahead);
|
|
$ENV{PERLDB_RESTART} = 1;
|
|
#print "$^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS";
|
|
exec $^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS;
|
|
print $OUT "exec failed: $!\n";
|
|
last CMD; };
|
|
$cmd =~ /^T$/ && do {
|
|
print_trace($OUT, 1); # skip DB
|
|
next CMD; };
|
|
$cmd =~ /^W\s*$/ && do {
|
|
$trace &= ~2;
|
|
@to_watch = @old_watch = ();
|
|
next CMD; };
|
|
$cmd =~ /^W\b\s*(.*)/s && do {
|
|
push @to_watch, $1;
|
|
$evalarg = $1;
|
|
my ($val) = &eval;
|
|
$val = (defined $val) ? "'$val'" : 'undef' ;
|
|
push @old_watch, $val;
|
|
$trace |= 2;
|
|
next CMD; };
|
|
$cmd =~ /^\/(.*)$/ && do {
|
|
$inpat = $1;
|
|
$inpat =~ s:([^\\])/$:$1:;
|
|
if ($inpat ne "") {
|
|
# squelch the sigmangler
|
|
local $SIG{__DIE__};
|
|
local $SIG{__WARN__};
|
|
eval '$inpat =~ m'."\a$inpat\a";
|
|
if ($@ ne "") {
|
|
print $OUT "$@";
|
|
next CMD;
|
|
}
|
|
$pat = $inpat;
|
|
}
|
|
$end = $start;
|
|
$incr = -1;
|
|
eval '
|
|
for (;;) {
|
|
++$start;
|
|
$start = 1 if ($start > $max);
|
|
last if ($start == $end);
|
|
if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) {
|
|
if ($slave_editor) {
|
|
print $OUT "\032\032$filename:$start:0\n";
|
|
} else {
|
|
print $OUT "$start:\t", $dbline[$start], "\n";
|
|
}
|
|
last;
|
|
}
|
|
} ';
|
|
print $OUT "/$pat/: not found\n" if ($start == $end);
|
|
next CMD; };
|
|
$cmd =~ /^\?(.*)$/ && do {
|
|
$inpat = $1;
|
|
$inpat =~ s:([^\\])\?$:$1:;
|
|
if ($inpat ne "") {
|
|
# squelch the sigmangler
|
|
local $SIG{__DIE__};
|
|
local $SIG{__WARN__};
|
|
eval '$inpat =~ m'."\a$inpat\a";
|
|
if ($@ ne "") {
|
|
print $OUT $@;
|
|
next CMD;
|
|
}
|
|
$pat = $inpat;
|
|
}
|
|
$end = $start;
|
|
$incr = -1;
|
|
eval '
|
|
for (;;) {
|
|
--$start;
|
|
$start = $max if ($start <= 0);
|
|
last if ($start == $end);
|
|
if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) {
|
|
if ($slave_editor) {
|
|
print $OUT "\032\032$filename:$start:0\n";
|
|
} else {
|
|
print $OUT "$start:\t", $dbline[$start], "\n";
|
|
}
|
|
last;
|
|
}
|
|
} ';
|
|
print $OUT "?$pat?: not found\n" if ($start == $end);
|
|
next CMD; };
|
|
$cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do {
|
|
pop(@hist) if length($cmd) > 1;
|
|
$i = $1 ? ($#hist-($2||1)) : ($2||$#hist);
|
|
$cmd = $hist[$i];
|
|
print $OUT $cmd, "\n";
|
|
redo CMD; };
|
|
$cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do {
|
|
&system($1);
|
|
next CMD; };
|
|
$cmd =~ /^$rc([^$rc].*)$/ && do {
|
|
$pat = "^$1";
|
|
pop(@hist) if length($cmd) > 1;
|
|
for ($i = $#hist; $i; --$i) {
|
|
last if $hist[$i] =~ /$pat/;
|
|
}
|
|
if (!$i) {
|
|
print $OUT "No such command!\n\n";
|
|
next CMD;
|
|
}
|
|
$cmd = $hist[$i];
|
|
print $OUT $cmd, "\n";
|
|
redo CMD; };
|
|
$cmd =~ /^$sh$/ && do {
|
|
&system($ENV{SHELL}||"/bin/sh");
|
|
next CMD; };
|
|
$cmd =~ /^$sh\s*([\x00-\xff]*)/ && do {
|
|
# XXX: using csh or tcsh destroys sigint retvals!
|
|
#&system($1); # use this instead
|
|
&system($ENV{SHELL}||"/bin/sh","-c",$1);
|
|
next CMD; };
|
|
$cmd =~ /^H\b\s*(-(\d+))?/ && do {
|
|
$end = $2 ? ($#hist-$2) : 0;
|
|
$hist = 0 if $hist < 0;
|
|
for ($i=$#hist; $i>$end; $i--) {
|
|
print $OUT "$i: ",$hist[$i],"\n"
|
|
unless $hist[$i] =~ /^.?$/;
|
|
};
|
|
next CMD; };
|
|
$cmd =~ /^(?:man|(?:perl)?doc)\b(?:\s+([^(]*))?$/ && do {
|
|
runman($1);
|
|
next CMD; };
|
|
$cmd =~ s/^p$/print {\$DB::OUT} \$_/;
|
|
$cmd =~ s/^p\b/print {\$DB::OUT} /;
|
|
$cmd =~ s/^=\s*// && do {
|
|
my @keys;
|
|
if (length $cmd == 0) {
|
|
@keys = sort keys %alias;
|
|
}
|
|
elsif (my($k,$v) = ($cmd =~ /^(\S+)\s+(\S.*)/)) {
|
|
# can't use $_ or kill //g state
|
|
for my $x ($k, $v) { $x =~ s/\a/\\a/g }
|
|
$alias{$k} = "s\a$k\a$v\a";
|
|
# squelch the sigmangler
|
|
local $SIG{__DIE__};
|
|
local $SIG{__WARN__};
|
|
unless (eval "sub { s\a$k\a$v\a }; 1") {
|
|
print $OUT "Can't alias $k to $v: $@\n";
|
|
delete $alias{$k};
|
|
next CMD;
|
|
}
|
|
@keys = ($k);
|
|
}
|
|
else {
|
|
@keys = ($cmd);
|
|
}
|
|
for my $k (@keys) {
|
|
if ((my $v = $alias{$k}) =~ ss\a$k\a(.*)\a$1) {
|
|
print $OUT "$k\t= $1\n";
|
|
}
|
|
elsif (defined $alias{$k}) {
|
|
print $OUT "$k\t$alias{$k}\n";
|
|
}
|
|
else {
|
|
print "No alias for $k\n";
|
|
}
|
|
}
|
|
next CMD; };
|
|
$cmd =~ /^\|\|?\s*[^|]/ && do {
|
|
if ($pager =~ /^\|/) {
|
|
open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT");
|
|
open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT");
|
|
} else {
|
|
open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT");
|
|
}
|
|
fix_less();
|
|
unless ($piped=open(OUT,$pager)) {
|
|
&warn("Can't pipe output to `$pager'");
|
|
if ($pager =~ /^\|/) {
|
|
open(OUT,">&STDOUT") # XXX: lost message
|
|
|| &warn("Can't restore DB::OUT");
|
|
open(STDOUT,">&SAVEOUT")
|
|
|| &warn("Can't restore STDOUT");
|
|
close(SAVEOUT);
|
|
} else {
|
|
open(OUT,">&STDOUT") # XXX: lost message
|
|
|| &warn("Can't restore DB::OUT");
|
|
}
|
|
next CMD;
|
|
}
|
|
$SIG{PIPE}= \&DB::catch if $pager =~ /^\|/
|
|
&& ("" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE});
|
|
$selected= select(OUT);
|
|
$|= 1;
|
|
select( $selected ), $selected= "" unless $cmd =~ /^\|\|/;
|
|
$cmd =~ s/^\|+\s*//;
|
|
redo PIPE;
|
|
};
|
|
# XXX Local variants do not work!
|
|
$cmd =~ s/^t\s/\$DB::trace |= 1;\n/;
|
|
$cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'};
|
|
$cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'};
|
|
} # PIPE:
|
|
$evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval;
|
|
if ($onetimeDump) {
|
|
$onetimeDump = undef;
|
|
} elsif ($term_pid == $$) {
|
|
print $OUT "\n";
|
|
}
|
|
} continue { # CMD:
|
|
if ($piped) {
|
|
if ($pager =~ /^\|/) {
|
|
$? = 0;
|
|
# we cannot warn here: the handle is missing --tchrist
|
|
close(OUT) || print SAVEOUT "\nCan't close DB::OUT\n";
|
|
|
|
# most of the $? crud was coping with broken cshisms
|
|
if ($?) {
|
|
print SAVEOUT "Pager `$pager' failed: ";
|
|
if ($? == -1) {
|
|
print SAVEOUT "shell returned -1\n";
|
|
} elsif ($? >> 8) {
|
|
print SAVEOUT
|
|
( $? & 127 ) ? " (SIG#".($?&127).")" : "",
|
|
( $? & 128 ) ? " -- core dumped" : "", "\n";
|
|
} else {
|
|
print SAVEOUT "status ", ($? >> 8), "\n";
|
|
}
|
|
}
|
|
|
|
open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT");
|
|
open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
|
|
$SIG{PIPE} = "DEFAULT" if $SIG{PIPE} eq \&DB::catch;
|
|
# Will stop ignoring SIGPIPE if done like nohup(1)
|
|
# does SIGINT but Perl doesn't give us a choice.
|
|
} else {
|
|
open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT");
|
|
}
|
|
close(SAVEOUT);
|
|
select($selected), $selected= "" unless $selected eq "";
|
|
$piped= "";
|
|
}
|
|
} # CMD:
|
|
$fall_off_end = 1 unless defined $cmd; # Emulate `q' on EOF
|
|
foreach $evalarg (@$post) {
|
|
&eval;
|
|
}
|
|
} # if ($single || $signal)
|
|
($@, $!, $^E, $,, $/, $\, $^W) = @saved;
|
|
();
|
|
}
|
|
|
|
# The following code may be executed now:
|
|
# BEGIN {warn 4}
|
|
|
|
sub sub {
|
|
my ($al, $ret, @ret) = "";
|
|
if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') {
|
|
$al = " for $$sub";
|
|
}
|
|
local $stack_depth = $stack_depth + 1; # Protect from non-local exits
|
|
$#stack = $stack_depth;
|
|
$stack[-1] = $single;
|
|
$single &= 1;
|
|
$single |= 4 if $stack_depth == $deep;
|
|
($frame & 4
|
|
? ( (print $LINEINFO ' ' x ($stack_depth - 1), "in "),
|
|
# Why -1? But it works! :-(
|
|
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
|
|
: print $LINEINFO ' ' x ($stack_depth - 1), "entering $sub$al\n") if $frame;
|
|
if (wantarray) {
|
|
@ret = &$sub;
|
|
$single |= $stack[$stack_depth--];
|
|
($frame & 4
|
|
? ( (print $LINEINFO ' ' x $stack_depth, "out "),
|
|
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
|
|
: print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2;
|
|
if ($doret eq $stack_depth or $frame & 16) {
|
|
my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO);
|
|
print $fh ' ' x $stack_depth if $frame & 16;
|
|
print $fh "list context return from $sub:\n";
|
|
dumpit($fh, \@ret );
|
|
$doret = -2;
|
|
}
|
|
@ret;
|
|
} else {
|
|
if (defined wantarray) {
|
|
$ret = &$sub;
|
|
} else {
|
|
&$sub; undef $ret;
|
|
};
|
|
$single |= $stack[$stack_depth--];
|
|
($frame & 4
|
|
? ( (print $LINEINFO ' ' x $stack_depth, "out "),
|
|
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
|
|
: print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2;
|
|
if ($doret eq $stack_depth or $frame & 16 and defined wantarray) {
|
|
my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO);
|
|
print $fh (' ' x $stack_depth) if $frame & 16;
|
|
print $fh (defined wantarray
|
|
? "scalar context return from $sub: "
|
|
: "void context return from $sub\n");
|
|
dumpit( $fh, $ret ) if defined wantarray;
|
|
$doret = -2;
|
|
}
|
|
$ret;
|
|
}
|
|
}
|
|
|
|
sub save {
|
|
@saved = ($@, $!, $^E, $,, $/, $\, $^W);
|
|
$, = ""; $/ = "\n"; $\ = ""; $^W = 0;
|
|
}
|
|
|
|
# The following takes its argument via $evalarg to preserve current @_
|
|
|
|
sub eval {
|
|
# 'my' would make it visible from user code
|
|
# but so does local! --tchrist
|
|
local @res;
|
|
{
|
|
local $otrace = $trace;
|
|
local $osingle = $single;
|
|
local $od = $^D;
|
|
{ ($evalarg) = $evalarg =~ /(.*)/s; }
|
|
@res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug
|
|
$trace = $otrace;
|
|
$single = $osingle;
|
|
$^D = $od;
|
|
}
|
|
my $at = $@;
|
|
local $saved[0]; # Preserve the old value of $@
|
|
eval { &DB::save };
|
|
if ($at) {
|
|
print $OUT $at;
|
|
} elsif ($onetimeDump eq 'dump') {
|
|
dumpit($OUT, \@res);
|
|
} elsif ($onetimeDump eq 'methods') {
|
|
methods($res[0]);
|
|
}
|
|
@res;
|
|
}
|
|
|
|
sub postponed_sub {
|
|
my $subname = shift;
|
|
if ($postponed{$subname} =~ s/^break\s([+-]?\d+)\s+if\s//) {
|
|
my $offset = $1 || 0;
|
|
# Filename below can contain ':'
|
|
my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/);
|
|
if ($i) {
|
|
$i += $offset;
|
|
local *dbline = $main::{'_<' . $file};
|
|
local $^W = 0; # != 0 is magical below
|
|
$had_breakpoints{$file} |= 1;
|
|
my $max = $#dbline;
|
|
++$i until $dbline[$i] != 0 or $i >= $max;
|
|
$dbline{$i} = delete $postponed{$subname};
|
|
} else {
|
|
print $OUT "Subroutine $subname not found.\n";
|
|
}
|
|
return;
|
|
}
|
|
elsif ($postponed{$subname} eq 'compile') { $signal = 1 }
|
|
#print $OUT "In postponed_sub for `$subname'.\n";
|
|
}
|
|
|
|
sub postponed {
|
|
if ($ImmediateStop) {
|
|
$ImmediateStop = 0;
|
|
$signal = 1;
|
|
}
|
|
return &postponed_sub
|
|
unless ref \$_[0] eq 'GLOB'; # A subroutine is compiled.
|
|
# Cannot be done before the file is compiled
|
|
local *dbline = shift;
|
|
my $filename = $dbline;
|
|
$filename =~ s/^_<//;
|
|
$signal = 1, print $OUT "'$filename' loaded...\n"
|
|
if $break_on_load{$filename};
|
|
print $LINEINFO ' ' x $stack_depth, "Package $filename.\n" if $frame;
|
|
return unless $postponed_file{$filename};
|
|
$had_breakpoints{$filename} |= 1;
|
|
#%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic
|
|
my $key;
|
|
for $key (keys %{$postponed_file{$filename}}) {
|
|
$dbline{$key} = ${$postponed_file{$filename}}{$key};
|
|
}
|
|
delete $postponed_file{$filename};
|
|
}
|
|
|
|
sub dumpit {
|
|
local ($savout) = select(shift);
|
|
my $osingle = $single;
|
|
my $otrace = $trace;
|
|
$single = $trace = 0;
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
unless (defined &main::dumpValue) {
|
|
do 'dumpvar.pl';
|
|
}
|
|
if (defined &main::dumpValue) {
|
|
&main::dumpValue(shift);
|
|
} else {
|
|
print $OUT "dumpvar.pl not available.\n";
|
|
}
|
|
$single = $osingle;
|
|
$trace = $otrace;
|
|
select ($savout);
|
|
}
|
|
|
|
# Tied method do not create a context, so may get wrong message:
|
|
|
|
sub print_trace {
|
|
my $fh = shift;
|
|
my @sub = dump_trace($_[0] + 1, $_[1]);
|
|
my $short = $_[2]; # Print short report, next one for sub name
|
|
my $s;
|
|
for ($i=0; $i <= $#sub; $i++) {
|
|
last if $signal;
|
|
local $" = ', ';
|
|
my $args = defined $sub[$i]{args}
|
|
? "(@{ $sub[$i]{args} })"
|
|
: '' ;
|
|
$args = (substr $args, 0, $maxtrace - 3) . '...'
|
|
if length $args > $maxtrace;
|
|
my $file = $sub[$i]{file};
|
|
$file = $file eq '-e' ? $file : "file `$file'" unless $short;
|
|
$s = $sub[$i]{sub};
|
|
$s = (substr $s, 0, $maxtrace - 3) . '...' if length $s > $maxtrace;
|
|
if ($short) {
|
|
my $sub = @_ >= 4 ? $_[3] : $s;
|
|
print $fh "$sub[$i]{context}=$sub$args from $file:$sub[$i]{line}\n";
|
|
} else {
|
|
print $fh "$sub[$i]{context} = $s$args" .
|
|
" called from $file" .
|
|
" line $sub[$i]{line}\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
sub dump_trace {
|
|
my $skip = shift;
|
|
my $count = shift || 1e9;
|
|
$skip++;
|
|
$count += $skip;
|
|
my ($p,$file,$line,$sub,$h,$args,$e,$r,@a,@sub,$context);
|
|
my $nothard = not $frame & 8;
|
|
local $frame = 0; # Do not want to trace this.
|
|
my $otrace = $trace;
|
|
$trace = 0;
|
|
for ($i = $skip;
|
|
$i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i);
|
|
$i++) {
|
|
@a = ();
|
|
for $arg (@args) {
|
|
my $type;
|
|
if (not defined $arg) {
|
|
push @a, "undef";
|
|
} elsif ($nothard and tied $arg) {
|
|
push @a, "tied";
|
|
} elsif ($nothard and $type = ref $arg) {
|
|
push @a, "ref($type)";
|
|
} else {
|
|
local $_ = "$arg"; # Safe to stringify now - should not call f().
|
|
s/([\'\\])/\\$1/g;
|
|
s/(.*)/'$1'/s
|
|
unless /^(?: -?[\d.]+ | \*[\w:]* )$/x;
|
|
s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg;
|
|
s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg;
|
|
push(@a, $_);
|
|
}
|
|
}
|
|
$context = $context ? '@' : (defined $context ? "\$" : '.');
|
|
$args = $h ? [@a] : undef;
|
|
$e =~ s/\n\s*\;\s*\Z// if $e;
|
|
$e =~ s/([\\\'])/\\$1/g if $e;
|
|
if ($r) {
|
|
$sub = "require '$e'";
|
|
} elsif (defined $r) {
|
|
$sub = "eval '$e'";
|
|
} elsif ($sub eq '(eval)') {
|
|
$sub = "eval {...}";
|
|
}
|
|
push(@sub, {context => $context, sub => $sub, args => $args,
|
|
file => $file, line => $line});
|
|
last if $signal;
|
|
}
|
|
$trace = $otrace;
|
|
@sub;
|
|
}
|
|
|
|
sub action {
|
|
my $action = shift;
|
|
while ($action =~ s/\\$//) {
|
|
#print $OUT "+ ";
|
|
#$action .= "\n";
|
|
$action .= &gets;
|
|
}
|
|
$action;
|
|
}
|
|
|
|
sub unbalanced {
|
|
# i hate using globals!
|
|
$balanced_brace_re ||= qr{
|
|
^ \{
|
|
(?:
|
|
(?> [^{}] + ) # Non-parens without backtracking
|
|
|
|
|
(??{ $balanced_brace_re }) # Group with matching parens
|
|
) *
|
|
\} $
|
|
}x;
|
|
return $_[0] !~ m/$balanced_brace_re/;
|
|
}
|
|
|
|
sub gets {
|
|
&readline("cont: ");
|
|
}
|
|
|
|
sub system {
|
|
# We save, change, then restore STDIN and STDOUT to avoid fork() since
|
|
# some non-Unix systems can do system() but have problems with fork().
|
|
open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN");
|
|
open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT");
|
|
open(STDIN,"<&IN") || &warn("Can't redirect STDIN");
|
|
open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT");
|
|
|
|
# XXX: using csh or tcsh destroys sigint retvals!
|
|
system(@_);
|
|
open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN");
|
|
open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT");
|
|
close(SAVEIN);
|
|
close(SAVEOUT);
|
|
|
|
|
|
# most of the $? crud was coping with broken cshisms
|
|
if ($? >> 8) {
|
|
&warn("(Command exited ", ($? >> 8), ")\n");
|
|
} elsif ($?) {
|
|
&warn( "(Command died of SIG#", ($? & 127),
|
|
(($? & 128) ? " -- core dumped" : "") , ")", "\n");
|
|
}
|
|
|
|
return $?;
|
|
|
|
}
|
|
|
|
sub setterm {
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
eval { require Term::ReadLine } or die $@;
|
|
if ($notty) {
|
|
if ($tty) {
|
|
open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!";
|
|
open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!";
|
|
$IN = \*IN;
|
|
$OUT = \*OUT;
|
|
my $sel = select($OUT);
|
|
$| = 1;
|
|
select($sel);
|
|
} else {
|
|
eval "require Term::Rendezvous;" or die;
|
|
my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$";
|
|
my $term_rv = new Term::Rendezvous $rv;
|
|
$IN = $term_rv->IN;
|
|
$OUT = $term_rv->OUT;
|
|
}
|
|
}
|
|
if (!$rl) {
|
|
$term = new Term::ReadLine::Stub 'perldb', $IN, $OUT;
|
|
} else {
|
|
$term = new Term::ReadLine 'perldb', $IN, $OUT;
|
|
|
|
$rl_attribs = $term->Attribs;
|
|
$rl_attribs->{basic_word_break_characters} .= '-:+/*,[])}'
|
|
if defined $rl_attribs->{basic_word_break_characters}
|
|
and index($rl_attribs->{basic_word_break_characters}, ":") == -1;
|
|
$rl_attribs->{special_prefixes} = '$@&%';
|
|
$rl_attribs->{completer_word_break_characters} .= '$@&%';
|
|
$rl_attribs->{completion_function} = \&db_complete;
|
|
}
|
|
$LINEINFO = $OUT unless defined $LINEINFO;
|
|
$lineinfo = $console unless defined $lineinfo;
|
|
$term->MinLine(2);
|
|
if ($term->Features->{setHistory} and "@hist" ne "?") {
|
|
$term->SetHistory(@hist);
|
|
}
|
|
ornaments($ornaments) if defined $ornaments;
|
|
$term_pid = $$;
|
|
}
|
|
|
|
sub resetterm { # We forked, so we need a different TTY
|
|
$term_pid = $$;
|
|
if (defined &get_fork_TTY) {
|
|
&get_fork_TTY;
|
|
} elsif (not defined $fork_TTY
|
|
and defined $ENV{TERM} and $ENV{TERM} eq 'xterm'
|
|
and defined $ENV{WINDOWID} and defined $ENV{DISPLAY}) {
|
|
# Possibly _inside_ XTERM
|
|
open XT, q[3>&1 xterm -title 'Forked Perl debugger' -e sh -c 'tty 1>&3;\
|
|
sleep 10000000' |];
|
|
$fork_TTY = <XT>;
|
|
chomp $fork_TTY;
|
|
}
|
|
if (defined $fork_TTY) {
|
|
TTY($fork_TTY);
|
|
undef $fork_TTY;
|
|
} else {
|
|
print_help(<<EOP);
|
|
I<#########> Forked, but do not know how to change a B<TTY>. I<#########>
|
|
Define B<\$DB::fork_TTY>
|
|
- or a function B<DB::get_fork_TTY()> which will set B<\$DB::fork_TTY>.
|
|
The value of B<\$DB::fork_TTY> should be the name of I<TTY> to use.
|
|
On I<UNIX>-like systems one can get the name of a I<TTY> for the given window
|
|
by typing B<tty>, and disconnect the I<shell> from I<TTY> by B<sleep 1000000>.
|
|
EOP
|
|
}
|
|
}
|
|
|
|
sub readline {
|
|
local $.;
|
|
if (@typeahead) {
|
|
my $left = @typeahead;
|
|
my $got = shift @typeahead;
|
|
print $OUT "auto(-$left)", shift, $got, "\n";
|
|
$term->AddHistory($got)
|
|
if length($got) > 1 and defined $term->Features->{addHistory};
|
|
return $got;
|
|
}
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
if (ref $OUT and UNIVERSAL::isa($OUT, 'IO::Socket::INET')) {
|
|
$OUT->write(join('', @_));
|
|
my $stuff;
|
|
$IN->recv( $stuff, 2048 ); # XXX: what's wrong with sysread?
|
|
$stuff;
|
|
}
|
|
else {
|
|
$term->readline(@_);
|
|
}
|
|
}
|
|
|
|
sub dump_option {
|
|
my ($opt, $val)= @_;
|
|
$val = option_val($opt,'N/A');
|
|
$val =~ s/([\\\'])/\\$1/g;
|
|
printf $OUT "%20s = '%s'\n", $opt, $val;
|
|
}
|
|
|
|
sub option_val {
|
|
my ($opt, $default)= @_;
|
|
my $val;
|
|
if (defined $optionVars{$opt}
|
|
and defined ${$optionVars{$opt}}) {
|
|
$val = ${$optionVars{$opt}};
|
|
} elsif (defined $optionAction{$opt}
|
|
and defined &{$optionAction{$opt}}) {
|
|
$val = &{$optionAction{$opt}}();
|
|
} elsif (defined $optionAction{$opt}
|
|
and not defined $option{$opt}
|
|
or defined $optionVars{$opt}
|
|
and not defined ${$optionVars{$opt}}) {
|
|
$val = $default;
|
|
} else {
|
|
$val = $option{$opt};
|
|
}
|
|
$val
|
|
}
|
|
|
|
sub parse_options {
|
|
local($_)= @_;
|
|
# too dangerous to let intuitive usage overwrite important things
|
|
# defaultion should never be the default
|
|
my %opt_needs_val = map { ( $_ => 1 ) } qw{
|
|
arrayDepth hashDepth LineInfo maxTraceLen ornaments
|
|
pager quote ReadLine recallCommand RemotePort ShellBang TTY
|
|
};
|
|
while (length) {
|
|
my $val_defaulted;
|
|
s/^\s+// && next;
|
|
s/^(\w+)(\W?)// or print($OUT "Invalid option `$_'\n"), last;
|
|
my ($opt,$sep) = ($1,$2);
|
|
my $val;
|
|
if ("?" eq $sep) {
|
|
print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last
|
|
if /^\S/;
|
|
#&dump_option($opt);
|
|
} elsif ($sep !~ /\S/) {
|
|
$val_defaulted = 1;
|
|
$val = "1"; # this is an evil default; make 'em set it!
|
|
} elsif ($sep eq "=") {
|
|
|
|
if (s/ (["']) ( (?: \\. | (?! \1 ) [^\\] )* ) \1 //x) {
|
|
my $quote = $1;
|
|
($val = $2) =~ s/\\([$quote\\])/$1/g;
|
|
} else {
|
|
s/^(\S*)//;
|
|
$val = $1;
|
|
print OUT qq(Option better cleared using $opt=""\n)
|
|
unless length $val;
|
|
}
|
|
|
|
} else { #{ to "let some poor schmuck bounce on the % key in B<vi>."
|
|
my ($end) = "\\" . substr( ")]>}$sep", index("([<{",$sep), 1 ); #}
|
|
s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)// or
|
|
print($OUT "Unclosed option value `$opt$sep$_'\n"), last;
|
|
($val = $1) =~ s/\\([\\$end])/$1/g;
|
|
}
|
|
|
|
my $option;
|
|
my $matches = grep( /^\Q$opt/ && ($option = $_), @options )
|
|
|| grep( /^\Q$opt/i && ($option = $_), @options );
|
|
|
|
print($OUT "Unknown option `$opt'\n"), next unless $matches;
|
|
print($OUT "Ambiguous option `$opt'\n"), next if $matches > 1;
|
|
|
|
if ($opt_needs_val{$option} && $val_defaulted) {
|
|
print $OUT "Option `$opt' is non-boolean. Use `O $option=VAL' to set, `O $option?' to query\n";
|
|
next;
|
|
}
|
|
|
|
$option{$option} = $val if defined $val;
|
|
|
|
eval qq{
|
|
local \$frame = 0;
|
|
local \$doret = -2;
|
|
require '$optionRequire{$option}';
|
|
1;
|
|
} || die # XXX: shouldn't happen
|
|
if defined $optionRequire{$option} &&
|
|
defined $val;
|
|
|
|
${$optionVars{$option}} = $val
|
|
if defined $optionVars{$option} &&
|
|
defined $val;
|
|
|
|
&{$optionAction{$option}} ($val)
|
|
if defined $optionAction{$option} &&
|
|
defined &{$optionAction{$option}} &&
|
|
defined $val;
|
|
|
|
# Not $rcfile
|
|
dump_option($option) unless $OUT eq \*STDERR;
|
|
}
|
|
}
|
|
|
|
sub set_list {
|
|
my ($stem,@list) = @_;
|
|
my $val;
|
|
$ENV{"${stem}_n"} = @list;
|
|
for $i (0 .. $#list) {
|
|
$val = $list[$i];
|
|
$val =~ s/\\/\\\\/g;
|
|
$val =~ s/([\0-\37\177\200-\377])/"\\0x" . unpack('H2',$1)/eg;
|
|
$ENV{"${stem}_$i"} = $val;
|
|
}
|
|
}
|
|
|
|
sub get_list {
|
|
my $stem = shift;
|
|
my @list;
|
|
my $n = delete $ENV{"${stem}_n"};
|
|
my $val;
|
|
for $i (0 .. $n - 1) {
|
|
$val = delete $ENV{"${stem}_$i"};
|
|
$val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge;
|
|
push @list, $val;
|
|
}
|
|
@list;
|
|
}
|
|
|
|
sub catch {
|
|
$signal = 1;
|
|
return; # Put nothing on the stack - malloc/free land!
|
|
}
|
|
|
|
sub warn {
|
|
my($msg)= join("",@_);
|
|
$msg .= ": $!\n" unless $msg =~ /\n$/;
|
|
print $OUT $msg;
|
|
}
|
|
|
|
sub TTY {
|
|
if (@_ and $term and $term->Features->{newTTY}) {
|
|
my ($in, $out) = shift;
|
|
if ($in =~ /,/) {
|
|
($in, $out) = split /,/, $in, 2;
|
|
} else {
|
|
$out = $in;
|
|
}
|
|
open IN, $in or die "cannot open `$in' for read: $!";
|
|
open OUT, ">$out" or die "cannot open `$out' for write: $!";
|
|
$term->newTTY(\*IN, \*OUT);
|
|
$IN = \*IN;
|
|
$OUT = \*OUT;
|
|
return $tty = $in;
|
|
} elsif ($term and @_) {
|
|
&warn("Too late to set TTY, enabled on next `R'!\n");
|
|
}
|
|
$tty = shift if @_;
|
|
$tty or $console;
|
|
}
|
|
|
|
sub noTTY {
|
|
if ($term) {
|
|
&warn("Too late to set noTTY, enabled on next `R'!\n") if @_;
|
|
}
|
|
$notty = shift if @_;
|
|
$notty;
|
|
}
|
|
|
|
sub ReadLine {
|
|
if ($term) {
|
|
&warn("Too late to set ReadLine, enabled on next `R'!\n") if @_;
|
|
}
|
|
$rl = shift if @_;
|
|
$rl;
|
|
}
|
|
|
|
sub RemotePort {
|
|
if ($term) {
|
|
&warn("Too late to set RemotePort, enabled on next 'R'!\n") if @_;
|
|
}
|
|
$remoteport = shift if @_;
|
|
$remoteport;
|
|
}
|
|
|
|
sub tkRunning {
|
|
if (${$term->Features}{tkRunning}) {
|
|
return $term->tkRunning(@_);
|
|
} else {
|
|
print $OUT "tkRunning not supported by current ReadLine package.\n";
|
|
0;
|
|
}
|
|
}
|
|
|
|
sub NonStop {
|
|
if ($term) {
|
|
&warn("Too late to set up NonStop mode, enabled on next `R'!\n") if @_;
|
|
}
|
|
$runnonstop = shift if @_;
|
|
$runnonstop;
|
|
}
|
|
|
|
sub pager {
|
|
if (@_) {
|
|
$pager = shift;
|
|
$pager="|".$pager unless $pager =~ /^(\+?\>|\|)/;
|
|
}
|
|
$pager;
|
|
}
|
|
|
|
sub shellBang {
|
|
if (@_) {
|
|
$sh = quotemeta shift;
|
|
$sh .= "\\b" if $sh =~ /\w$/;
|
|
}
|
|
$psh = $sh;
|
|
$psh =~ s/\\b$//;
|
|
$psh =~ s/\\(.)/$1/g;
|
|
&sethelp;
|
|
$psh;
|
|
}
|
|
|
|
sub ornaments {
|
|
if (defined $term) {
|
|
local ($warnLevel,$dieLevel) = (0, 1);
|
|
return '' unless $term->Features->{ornaments};
|
|
eval { $term->ornaments(@_) } || '';
|
|
} else {
|
|
$ornaments = shift;
|
|
}
|
|
}
|
|
|
|
sub recallCommand {
|
|
if (@_) {
|
|
$rc = quotemeta shift;
|
|
$rc .= "\\b" if $rc =~ /\w$/;
|
|
}
|
|
$prc = $rc;
|
|
$prc =~ s/\\b$//;
|
|
$prc =~ s/\\(.)/$1/g;
|
|
&sethelp;
|
|
$prc;
|
|
}
|
|
|
|
sub LineInfo {
|
|
return $lineinfo unless @_;
|
|
$lineinfo = shift;
|
|
my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo";
|
|
$slave_editor = ($stream =~ /^\|/);
|
|
open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write");
|
|
$LINEINFO = \*LINEINFO;
|
|
my $save = select($LINEINFO);
|
|
$| = 1;
|
|
select($save);
|
|
$lineinfo;
|
|
}
|
|
|
|
sub list_versions {
|
|
my %version;
|
|
my $file;
|
|
for (keys %INC) {
|
|
$file = $_;
|
|
s,\.p[lm]$,,i ;
|
|
s,/,::,g ;
|
|
s/^perl5db$/DB/;
|
|
s/^Term::ReadLine::readline$/readline/;
|
|
if (defined ${ $_ . '::VERSION' }) {
|
|
$version{$file} = "${ $_ . '::VERSION' } from ";
|
|
}
|
|
$version{$file} .= $INC{$file};
|
|
}
|
|
dumpit($OUT,\%version);
|
|
}
|
|
|
|
sub sethelp {
|
|
# XXX: make sure these are tabs between the command and explantion,
|
|
# or print_help will screw up your formatting if you have
|
|
# eeevil ornaments enabled. This is an insane mess.
|
|
|
|
$help = "
|
|
B<T> Stack trace.
|
|
B<s> [I<expr>] Single step [in I<expr>].
|
|
B<n> [I<expr>] Next, steps over subroutine calls [in I<expr>].
|
|
<B<CR>> Repeat last B<n> or B<s> command.
|
|
B<r> Return from current subroutine.
|
|
B<c> [I<line>|I<sub>] Continue; optionally inserts a one-time-only breakpoint
|
|
at the specified position.
|
|
B<l> I<min>B<+>I<incr> List I<incr>+1 lines starting at I<min>.
|
|
B<l> I<min>B<->I<max> List lines I<min> through I<max>.
|
|
B<l> I<line> List single I<line>.
|
|
B<l> I<subname> List first window of lines from subroutine.
|
|
B<l> I<\$var> List first window of lines from subroutine referenced by I<\$var>.
|
|
B<l> List next window of lines.
|
|
B<-> List previous window of lines.
|
|
B<w> [I<line>] List window around I<line>.
|
|
B<.> Return to the executed line.
|
|
B<f> I<filename> Switch to viewing I<filename>. File must be already loaded.
|
|
I<filename> may be either the full name of the file, or a regular
|
|
expression matching the full file name:
|
|
B<f> I</home/me/foo.pl> and B<f> I<oo\\.> may access the same file.
|
|
Evals (with saved bodies) are considered to be filenames:
|
|
B<f> I<(eval 7)> and B<f> I<eval 7\\b> access the body of the 7th eval
|
|
(in the order of execution).
|
|
B</>I<pattern>B</> Search forwards for I<pattern>; final B</> is optional.
|
|
B<?>I<pattern>B<?> Search backwards for I<pattern>; final B<?> is optional.
|
|
B<L> List all breakpoints and actions.
|
|
B<S> [[B<!>]I<pattern>] List subroutine names [not] matching I<pattern>.
|
|
B<t> Toggle trace mode.
|
|
B<t> I<expr> Trace through execution of I<expr>.
|
|
B<b> [I<line>] [I<condition>]
|
|
Set breakpoint; I<line> defaults to the current execution line;
|
|
I<condition> breaks if it evaluates to true, defaults to '1'.
|
|
B<b> I<subname> [I<condition>]
|
|
Set breakpoint at first line of subroutine.
|
|
B<b> I<\$var> Set breakpoint at first line of subroutine referenced by I<\$var>.
|
|
B<b> B<load> I<filename> Set breakpoint on `require'ing the given file.
|
|
B<b> B<postpone> I<subname> [I<condition>]
|
|
Set breakpoint at first line of subroutine after
|
|
it is compiled.
|
|
B<b> B<compile> I<subname>
|
|
Stop after the subroutine is compiled.
|
|
B<d> [I<line>] Delete the breakpoint for I<line>.
|
|
B<D> Delete all breakpoints.
|
|
B<a> [I<line>] I<command>
|
|
Set an action to be done before the I<line> is executed;
|
|
I<line> defaults to the current execution line.
|
|
Sequence is: check for breakpoint/watchpoint, print line
|
|
if necessary, do action, prompt user if necessary,
|
|
execute line.
|
|
B<a> [I<line>] Delete the action for I<line>.
|
|
B<A> Delete all actions.
|
|
B<W> I<expr> Add a global watch-expression.
|
|
B<W> Delete all watch-expressions.
|
|
B<V> [I<pkg> [I<vars>]] List some (default all) variables in package (default current).
|
|
Use B<~>I<pattern> and B<!>I<pattern> for positive and negative regexps.
|
|
B<X> [I<vars>] Same as \"B<V> I<currentpackage> [I<vars>]\".
|
|
B<x> I<expr> Evals expression in list context, dumps the result.
|
|
B<m> I<expr> Evals expression in list context, prints methods callable
|
|
on the first element of the result.
|
|
B<m> I<class> Prints methods callable via the given class.
|
|
|
|
B<<> ? List Perl commands to run before each prompt.
|
|
B<<> I<expr> Define Perl command to run before each prompt.
|
|
B<<<> I<expr> Add to the list of Perl commands to run before each prompt.
|
|
B<>> ? List Perl commands to run after each prompt.
|
|
B<>> I<expr> Define Perl command to run after each prompt.
|
|
B<>>B<>> I<expr> Add to the list of Perl commands to run after each prompt.
|
|
B<{> I<db_command> Define debugger command to run before each prompt.
|
|
B<{> ? List debugger commands to run before each prompt.
|
|
B<<> I<expr> Define Perl command to run before each prompt.
|
|
B<{{> I<db_command> Add to the list of debugger commands to run before each prompt.
|
|
B<$prc> I<number> Redo a previous command (default previous command).
|
|
B<$prc> I<-number> Redo number'th-to-last command.
|
|
B<$prc> I<pattern> Redo last command that started with I<pattern>.
|
|
See 'B<O> I<recallCommand>' too.
|
|
B<$psh$psh> I<cmd> Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)"
|
|
. ( $rc eq $sh ? "" : "
|
|
B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . "
|
|
See 'B<O> I<shellBang>' too.
|
|
B<H> I<-number> Display last number commands (default all).
|
|
B<p> I<expr> Same as \"I<print {DB::OUT} expr>\" in current package.
|
|
B<|>I<dbcmd> Run debugger command, piping DB::OUT to current pager.
|
|
B<||>I<dbcmd> Same as B<|>I<dbcmd> but DB::OUT is temporarilly select()ed as well.
|
|
B<\=> [I<alias> I<value>] Define a command alias, or list current aliases.
|
|
I<command> Execute as a perl statement in current package.
|
|
B<v> Show versions of loaded modules.
|
|
B<R> Pure-man-restart of debugger, some of debugger state
|
|
and command-line options may be lost.
|
|
Currently the following setting are preserved:
|
|
history, breakpoints and actions, debugger B<O>ptions
|
|
and the following command-line options: I<-w>, I<-I>, I<-e>.
|
|
|
|
B<O> [I<opt>] ... Set boolean option to true
|
|
B<O> [I<opt>B<?>] Query options
|
|
B<O> [I<opt>B<=>I<val>] [I<opt>=B<\">I<val>B<\">] ...
|
|
Set options. Use quotes in spaces in value.
|
|
I<recallCommand>, I<ShellBang> chars used to recall command or spawn shell;
|
|
I<pager> program for output of \"|cmd\";
|
|
I<tkRunning> run Tk while prompting (with ReadLine);
|
|
I<signalLevel> I<warnLevel> I<dieLevel> level of verbosity;
|
|
I<inhibit_exit> Allows stepping off the end of the script.
|
|
I<ImmediateStop> Debugger should stop as early as possible.
|
|
I<RemotePort> Remote hostname:port for remote debugging
|
|
The following options affect what happens with B<V>, B<X>, and B<x> commands:
|
|
I<arrayDepth>, I<hashDepth> print only first N elements ('' for all);
|
|
I<compactDump>, I<veryCompact> change style of array and hash dump;
|
|
I<globPrint> whether to print contents of globs;
|
|
I<DumpDBFiles> dump arrays holding debugged files;
|
|
I<DumpPackages> dump symbol tables of packages;
|
|
I<DumpReused> dump contents of \"reused\" addresses;
|
|
I<quote>, I<HighBit>, I<undefPrint> change style of string dump;
|
|
I<bareStringify> Do not print the overload-stringified value;
|
|
Other options include:
|
|
I<PrintRet> affects printing of return value after B<r> command,
|
|
I<frame> affects printing messages on entry and exit from subroutines.
|
|
I<AutoTrace> affects printing messages on every possible breaking point.
|
|
I<maxTraceLen> gives maximal length of evals/args listed in stack trace.
|
|
I<ornaments> affects screen appearance of the command line.
|
|
During startup options are initialized from \$ENV{PERLDB_OPTS}.
|
|
You can put additional initialization options I<TTY>, I<noTTY>,
|
|
I<ReadLine>, I<NonStop>, and I<RemotePort> there (or use
|
|
`B<R>' after you set them).
|
|
|
|
B<q> or B<^D> Quit. Set B<\$DB::finished = 0> to debug global destruction.
|
|
B<h> [I<db_command>] Get help [on a specific debugger command], enter B<|h> to page.
|
|
B<h h> Summary of debugger commands.
|
|
B<$doccmd> I<manpage> Runs the external doc viewer B<$doccmd> command on the
|
|
named Perl I<manpage>, or on B<$doccmd> itself if omitted.
|
|
Set B<\$DB::doccmd> to change viewer.
|
|
|
|
Type `|h' for a paged display if this was too hard to read.
|
|
|
|
"; # Fix balance of vi % matching: } }}
|
|
|
|
$summary = <<"END_SUM";
|
|
I<List/search source lines:> I<Control script execution:>
|
|
B<l> [I<ln>|I<sub>] List source code B<T> Stack trace
|
|
B<-> or B<.> List previous/current line B<s> [I<expr>] Single step [in expr]
|
|
B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs
|
|
B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s>
|
|
B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine
|
|
B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position
|
|
I<Debugger controls:> B<L> List break/watch/actions
|
|
B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr]
|
|
B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint
|
|
B<$prc> [I<N>|I<pat>] Redo a previous command B<d> [I<ln>] or B<D> Delete a/all breakpoints
|
|
B<H> [I<-num>] Display last num commands B<a> [I<ln>] I<cmd> Do cmd before line
|
|
B<=> [I<a> I<val>] Define/list an alias B<W> I<expr> Add a watch expression
|
|
B<h> [I<db_cmd>] Get help on command B<A> or B<W> Delete all actions/watch
|
|
B<|>[B<|>]I<db_cmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess
|
|
B<q> or B<^D> Quit B<R> Attempt a restart
|
|
I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr>
|
|
B<x>|B<m> I<expr> Evals expr in list context, dumps the result or lists methods.
|
|
B<p> I<expr> Print expression (uses script's current package).
|
|
B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern
|
|
B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern.
|
|
B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\".
|
|
For more help, type B<h> I<cmd_letter>, or run B<$doccmd perldebug> for all docs.
|
|
END_SUM
|
|
# ')}}; # Fix balance of vi % matching
|
|
}
|
|
|
|
sub print_help {
|
|
local $_ = shift;
|
|
|
|
# Restore proper alignment destroyed by eeevil I<> and B<>
|
|
# ornaments: A pox on both their houses!
|
|
#
|
|
# A help command will have everything up to and including
|
|
# the first tab sequence paddeed into a field 16 (or if indented 20)
|
|
# wide. If it's wide than that, an extra space will be added.
|
|
s{
|
|
^ # only matters at start of line
|
|
( \040{4} | \t )* # some subcommands are indented
|
|
( < ? # so <CR> works
|
|
[BI] < [^\t\n] + ) # find an eeevil ornament
|
|
( \t+ ) # original separation, discarded
|
|
( .* ) # this will now start (no earlier) than
|
|
# column 16
|
|
} {
|
|
my($leadwhite, $command, $midwhite, $text) = ($1, $2, $3, $4);
|
|
my $clean = $command;
|
|
$clean =~ s/[BI]<([^>]*)>/$1/g;
|
|
# replace with this whole string:
|
|
(length($leadwhite) ? " " x 4 : "")
|
|
. $command
|
|
. ((" " x (16 + (length($leadwhite) ? 4 : 0) - length($clean))) || " ")
|
|
. $text;
|
|
|
|
}mgex;
|
|
|
|
s{ # handle bold ornaments
|
|
B < ( [^>] + | > ) >
|
|
} {
|
|
$Term::ReadLine::TermCap::rl_term_set[2]
|
|
. $1
|
|
. $Term::ReadLine::TermCap::rl_term_set[3]
|
|
}gex;
|
|
|
|
s{ # handle italic ornaments
|
|
I < ( [^>] + | > ) >
|
|
} {
|
|
$Term::ReadLine::TermCap::rl_term_set[0]
|
|
. $1
|
|
. $Term::ReadLine::TermCap::rl_term_set[1]
|
|
}gex;
|
|
|
|
print $OUT $_;
|
|
}
|
|
|
|
sub fix_less {
|
|
return if defined $ENV{LESS} && $ENV{LESS} =~ /r/;
|
|
my $is_less = $pager =~ /\bless\b/;
|
|
if ($pager =~ /\bmore\b/) {
|
|
my @st_more = stat('/usr/bin/more');
|
|
my @st_less = stat('/usr/bin/less');
|
|
$is_less = @st_more && @st_less
|
|
&& $st_more[0] == $st_less[0]
|
|
&& $st_more[1] == $st_less[1];
|
|
}
|
|
# changes environment!
|
|
$ENV{LESS} .= 'r' if $is_less;
|
|
}
|
|
|
|
sub diesignal {
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
$SIG{'ABRT'} = 'DEFAULT';
|
|
kill 'ABRT', $$ if $panic++;
|
|
if (defined &Carp::longmess) {
|
|
local $SIG{__WARN__} = '';
|
|
local $Carp::CarpLevel = 2; # mydie + confess
|
|
&warn(Carp::longmess("Signal @_"));
|
|
}
|
|
else {
|
|
print $DB::OUT "Got signal @_\n";
|
|
}
|
|
kill 'ABRT', $$;
|
|
}
|
|
|
|
sub dbwarn {
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
local $SIG{__WARN__} = '';
|
|
local $SIG{__DIE__} = '';
|
|
eval { require Carp } if defined $^S; # If error/warning during compilation,
|
|
# require may be broken.
|
|
warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"),
|
|
return unless defined &Carp::longmess;
|
|
my ($mysingle,$mytrace) = ($single,$trace);
|
|
$single = 0; $trace = 0;
|
|
my $mess = Carp::longmess(@_);
|
|
($single,$trace) = ($mysingle,$mytrace);
|
|
&warn($mess);
|
|
}
|
|
|
|
sub dbdie {
|
|
local $frame = 0;
|
|
local $doret = -2;
|
|
local $SIG{__DIE__} = '';
|
|
local $SIG{__WARN__} = '';
|
|
my $i = 0; my $ineval = 0; my $sub;
|
|
if ($dieLevel > 2) {
|
|
local $SIG{__WARN__} = \&dbwarn;
|
|
&warn(@_); # Yell no matter what
|
|
return;
|
|
}
|
|
if ($dieLevel < 2) {
|
|
die @_ if $^S; # in eval propagate
|
|
}
|
|
eval { require Carp } if defined $^S; # If error/warning during compilation,
|
|
# require may be broken.
|
|
|
|
die(@_, "\nCannot print stack trace, load with -MCarp option to see stack")
|
|
unless defined &Carp::longmess;
|
|
|
|
# We do not want to debug this chunk (automatic disabling works
|
|
# inside DB::DB, but not in Carp).
|
|
my ($mysingle,$mytrace) = ($single,$trace);
|
|
$single = 0; $trace = 0;
|
|
my $mess = Carp::longmess(@_);
|
|
($single,$trace) = ($mysingle,$mytrace);
|
|
die $mess;
|
|
}
|
|
|
|
sub warnLevel {
|
|
if (@_) {
|
|
$prevwarn = $SIG{__WARN__} unless $warnLevel;
|
|
$warnLevel = shift;
|
|
if ($warnLevel) {
|
|
$SIG{__WARN__} = \&DB::dbwarn;
|
|
} else {
|
|
$SIG{__WARN__} = $prevwarn;
|
|
}
|
|
}
|
|
$warnLevel;
|
|
}
|
|
|
|
sub dieLevel {
|
|
if (@_) {
|
|
$prevdie = $SIG{__DIE__} unless $dieLevel;
|
|
$dieLevel = shift;
|
|
if ($dieLevel) {
|
|
$SIG{__DIE__} = \&DB::dbdie; # if $dieLevel < 2;
|
|
#$SIG{__DIE__} = \&DB::diehard if $dieLevel >= 2;
|
|
print $OUT "Stack dump during die enabled",
|
|
( $dieLevel == 1 ? " outside of evals" : ""), ".\n"
|
|
if $I_m_init;
|
|
print $OUT "Dump printed too.\n" if $dieLevel > 2;
|
|
} else {
|
|
$SIG{__DIE__} = $prevdie;
|
|
print $OUT "Default die handler restored.\n";
|
|
}
|
|
}
|
|
$dieLevel;
|
|
}
|
|
|
|
sub signalLevel {
|
|
if (@_) {
|
|
$prevsegv = $SIG{SEGV} unless $signalLevel;
|
|
$prevbus = $SIG{BUS} unless $signalLevel;
|
|
$signalLevel = shift;
|
|
if ($signalLevel) {
|
|
$SIG{SEGV} = \&DB::diesignal;
|
|
$SIG{BUS} = \&DB::diesignal;
|
|
} else {
|
|
$SIG{SEGV} = $prevsegv;
|
|
$SIG{BUS} = $prevbus;
|
|
}
|
|
}
|
|
$signalLevel;
|
|
}
|
|
|
|
sub CvGV_name {
|
|
my $in = shift;
|
|
my $name = CvGV_name_or_bust($in);
|
|
defined $name ? $name : $in;
|
|
}
|
|
|
|
sub CvGV_name_or_bust {
|
|
my $in = shift;
|
|
return if $skipCvGV; # Backdoor to avoid problems if XS broken...
|
|
$in = \&$in; # Hard reference...
|
|
eval {require Devel::Peek; 1} or return;
|
|
my $gv = Devel::Peek::CvGV($in) or return;
|
|
*$gv{PACKAGE} . '::' . *$gv{NAME};
|
|
}
|
|
|
|
sub find_sub {
|
|
my $subr = shift;
|
|
$sub{$subr} or do {
|
|
return unless defined &$subr;
|
|
my $name = CvGV_name_or_bust($subr);
|
|
my $data;
|
|
$data = $sub{$name} if defined $name;
|
|
return $data if defined $data;
|
|
|
|
# Old stupid way...
|
|
$subr = \&$subr; # Hard reference
|
|
my $s;
|
|
for (keys %sub) {
|
|
$s = $_, last if $subr eq \&$_;
|
|
}
|
|
$sub{$s} if $s;
|
|
}
|
|
}
|
|
|
|
sub methods {
|
|
my $class = shift;
|
|
$class = ref $class if ref $class;
|
|
local %seen;
|
|
local %packs;
|
|
methods_via($class, '', 1);
|
|
methods_via('UNIVERSAL', 'UNIVERSAL', 0);
|
|
}
|
|
|
|
sub methods_via {
|
|
my $class = shift;
|
|
return if $packs{$class}++;
|
|
my $prefix = shift;
|
|
my $prepend = $prefix ? "via $prefix: " : '';
|
|
my $name;
|
|
for $name (grep {defined &{${"${class}::"}{$_}}}
|
|
sort keys %{"${class}::"}) {
|
|
next if $seen{ $name }++;
|
|
print $DB::OUT "$prepend$name\n";
|
|
}
|
|
return unless shift; # Recurse?
|
|
for $name (@{"${class}::ISA"}) {
|
|
$prepend = $prefix ? $prefix . " -> $name" : $name;
|
|
methods_via($name, $prepend, 1);
|
|
}
|
|
}
|
|
|
|
sub setman {
|
|
$doccmd = $^O !~ /^(?:MSWin32|VMS|os2|dos|amigaos|riscos|MacOS)\z/s
|
|
? "man" # O Happy Day!
|
|
: "perldoc"; # Alas, poor unfortunates
|
|
}
|
|
|
|
sub runman {
|
|
my $page = shift;
|
|
unless ($page) {
|
|
&system("$doccmd $doccmd");
|
|
return;
|
|
}
|
|
# this way user can override, like with $doccmd="man -Mwhatever"
|
|
# or even just "man " to disable the path check.
|
|
unless ($doccmd eq 'man') {
|
|
&system("$doccmd $page");
|
|
return;
|
|
}
|
|
|
|
$page = 'perl' if lc($page) eq 'help';
|
|
|
|
require Config;
|
|
my $man1dir = $Config::Config{'man1dir'};
|
|
my $man3dir = $Config::Config{'man3dir'};
|
|
for ($man1dir, $man3dir) { s#/[^/]*\z## if /\S/ }
|
|
my $manpath = '';
|
|
$manpath .= "$man1dir:" if $man1dir =~ /\S/;
|
|
$manpath .= "$man3dir:" if $man3dir =~ /\S/ && $man1dir ne $man3dir;
|
|
chop $manpath if $manpath;
|
|
# harmless if missing, I figure
|
|
my $oldpath = $ENV{MANPATH};
|
|
$ENV{MANPATH} = $manpath if $manpath;
|
|
my $nopathopt = $^O =~ /dunno what goes here/;
|
|
if (system($doccmd,
|
|
# I just *know* there are men without -M
|
|
(($manpath && !$nopathopt) ? ("-M", $manpath) : ()),
|
|
split ' ', $page) )
|
|
{
|
|
unless ($page =~ /^perl\w/) {
|
|
if (grep { $page eq $_ } qw{
|
|
5004delta 5005delta amiga api apio book boot bot call compile
|
|
cygwin data dbmfilter debug debguts delta diag doc dos dsc embed
|
|
faq faq1 faq2 faq3 faq4 faq5 faq6 faq7 faq8 faq9 filter fork
|
|
form func guts hack hist hpux intern ipc lexwarn locale lol mod
|
|
modinstall modlib number obj op opentut os2 os390 pod port
|
|
ref reftut run sec style sub syn thrtut tie toc todo toot tootc
|
|
trap unicode var vms win32 xs xstut
|
|
})
|
|
{
|
|
$page =~ s/^/perl/;
|
|
system($doccmd,
|
|
(($manpath && !$nopathopt) ? ("-M", $manpath) : ()),
|
|
$page);
|
|
}
|
|
}
|
|
}
|
|
if (defined $oldpath) {
|
|
$ENV{MANPATH} = $manpath;
|
|
} else {
|
|
delete $ENV{MANPATH};
|
|
}
|
|
}
|
|
|
|
# The following BEGIN is very handy if debugger goes havoc, debugging debugger?
|
|
|
|
BEGIN { # This does not compile, alas.
|
|
$IN = \*STDIN; # For bugs before DB::OUT has been opened
|
|
$OUT = \*STDERR; # For errors before DB::OUT has been opened
|
|
$sh = '!';
|
|
$rc = ',';
|
|
@hist = ('?');
|
|
$deep = 100; # warning if stack gets this deep
|
|
$window = 10;
|
|
$preview = 3;
|
|
$sub = '';
|
|
$SIG{INT} = \&DB::catch;
|
|
# This may be enabled to debug debugger:
|
|
#$warnLevel = 1 unless defined $warnLevel;
|
|
#$dieLevel = 1 unless defined $dieLevel;
|
|
#$signalLevel = 1 unless defined $signalLevel;
|
|
|
|
$db_stop = 0; # Compiler warning
|
|
$db_stop = 1 << 30;
|
|
$level = 0; # Level of recursive debugging
|
|
# @stack and $doret are needed in sub sub, which is called for DB::postponed.
|
|
# Triggers bug (?) in perl is we postpone this until runtime:
|
|
@postponed = @stack = (0);
|
|
$stack_depth = 0; # Localized $#stack
|
|
$doret = -2;
|
|
$frame = 0;
|
|
}
|
|
|
|
BEGIN {$^W = $ini_warn;} # Switch warnings back
|
|
|
|
#use Carp; # This did break, left for debuggin
|
|
|
|
sub db_complete {
|
|
# Specific code for b c l V m f O, &blah, $blah, @blah, %blah
|
|
my($text, $line, $start) = @_;
|
|
my ($itext, $search, $prefix, $pack) =
|
|
($text, "^\Q${'package'}::\E([^:]+)\$");
|
|
|
|
return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines
|
|
(map { /$search/ ? ($1) : () } keys %sub)
|
|
if (substr $line, 0, $start) =~ /^\|*[blc]\s+((postpone|compile)\s+)?$/;
|
|
return sort grep /^\Q$text/, values %INC # files
|
|
if (substr $line, 0, $start) =~ /^\|*b\s+load\s+$/;
|
|
return sort map {($_, db_complete($_ . "::", "V ", 2))}
|
|
grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # top-packages
|
|
if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ and $text =~ /^\w*$/;
|
|
return sort map {($_, db_complete($_ . "::", "V ", 2))}
|
|
grep !/^main::/,
|
|
grep /^\Q$text/, map { /^(.*)::$/ ? ($prefix . "::$1") : ()} keys %{$prefix . '::'}
|
|
# packages
|
|
if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/
|
|
and $text =~ /^(.*[^:])::?(\w*)$/ and $prefix = $1;
|
|
if ( $line =~ /^\|*f\s+(.*)/ ) { # Loaded files
|
|
# We may want to complete to (eval 9), so $text may be wrong
|
|
$prefix = length($1) - length($text);
|
|
$text = $1;
|
|
return sort
|
|
map {substr $_, 2 + $prefix} grep /^_<\Q$text/, (keys %main::), $0
|
|
}
|
|
if ((substr $text, 0, 1) eq '&') { # subroutines
|
|
$text = substr $text, 1;
|
|
$prefix = "&";
|
|
return sort map "$prefix$_",
|
|
grep /^\Q$text/,
|
|
(keys %sub),
|
|
(map { /$search/ ? ($1) : () }
|
|
keys %sub);
|
|
}
|
|
if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package
|
|
$pack = ($1 eq 'main' ? '' : $1) . '::';
|
|
$prefix = (substr $text, 0, 1) . $1 . '::';
|
|
$text = $2;
|
|
my @out
|
|
= map "$prefix$_", grep /^\Q$text/, grep /^_?[a-zA-Z]/, keys %$pack ;
|
|
if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
|
|
return db_complete($out[0], $line, $start);
|
|
}
|
|
return sort @out;
|
|
}
|
|
if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main)
|
|
$pack = ($package eq 'main' ? '' : $package) . '::';
|
|
$prefix = substr $text, 0, 1;
|
|
$text = substr $text, 1;
|
|
my @out = map "$prefix$_", grep /^\Q$text/,
|
|
(grep /^_?[a-zA-Z]/, keys %$pack),
|
|
( $pack eq '::' ? () : (grep /::$/, keys %::) ) ;
|
|
if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) {
|
|
return db_complete($out[0], $line, $start);
|
|
}
|
|
return sort @out;
|
|
}
|
|
if ((substr $line, 0, $start) =~ /^\|*O\b.*\s$/) { # Options after a space
|
|
my @out = grep /^\Q$text/, @options;
|
|
my $val = option_val($out[0], undef);
|
|
my $out = '? ';
|
|
if (not defined $val or $val =~ /[\n\r]/) {
|
|
# Can do nothing better
|
|
} elsif ($val =~ /\s/) {
|
|
my $found;
|
|
foreach $l (split //, qq/\"\'\#\|/) {
|
|
$out = "$l$val$l ", last if (index $val, $l) == -1;
|
|
}
|
|
} else {
|
|
$out = "=$val ";
|
|
}
|
|
# Default to value if one completion, to question if many
|
|
$rl_attribs->{completer_terminator_character} = (@out == 1 ? $out : '? ');
|
|
return sort @out;
|
|
}
|
|
return $term->filename_list($text); # filenames
|
|
}
|
|
|
|
sub end_report {
|
|
print $OUT "Use `q' to quit or `R' to restart. `h q' for details.\n"
|
|
}
|
|
|
|
END {
|
|
$finished = 1 if $inhibit_exit; # So that some keys may be disabled.
|
|
$fall_off_end = 1 unless $inhibit_exit;
|
|
# Do not stop in at_exit() and destructors on exit:
|
|
$DB::single = !$fall_off_end && !$runnonstop;
|
|
DB::fake::at_exit() unless $fall_off_end or $runnonstop;
|
|
}
|
|
|
|
package DB::fake;
|
|
|
|
sub at_exit {
|
|
"Debugged program terminated. Use `q' to quit or `R' to restart.";
|
|
}
|
|
|
|
package DB; # Do not trace this 1; below!
|
|
|
|
1;
|