$prevline =~ /^\+(\t*)(. WARN("PRINTF_L", "storage class '$2' should be located before type '$1'\n" . if ($prevline =~ /\bif\s*\(\s*($Lval)\s*\)/) { # not starting a section or a macro "\" extended line } + rtrim(buf); } # only fix matches surrounded by parentheses to avoid incorrect possible($type, "A:" . : } last if (!$file && $f =~ /^\@\@/); WARN("PREFER_DEV_LEVEL", ## print "2: from to ident\n"; if (defined $pre_pointer_space && $rawline =~ /^\+[ \t]*\*/ && #leading * long\s+(? $s =~ s/\n./\n/gs; # check we are in a valid source file C or perl if not then ignore this hunk qr{long\s+long\s+int\s+(? } my $line = $_; $commit_log_has_diff = 1; } my $hasdesc = 0; } if ($#chunks > 0 && $level == 0) { #make up the handle for any error we report on this line } $herecurr) && my $has_statement = 0; my ($formatted_email) = @_; It would not be uncommon to pipe to the tr utility, or to Perl if preferred: You can also use command substitution to remove the trailing newline: If your expected output may contain multiple lines, you have another decision to make: If you want to remove MULTIPLE newline characters from the end of the file, again use cmd substitution: If you want to strictly remove THE LAST newline character from a file, use Perl: Note that if you are certain you have a trailing newline character you want to remove, you can use head from GNU coreutils to select everything except the last byte. } $op eq '*' or $op eq '/' or $off++; $a = 'V' if ($elements[$n] ne ''); $stmt =~ s/^\s*{//; if ($line =~ /\bwaitqueue_active\s*\(/) { # )\n" . # EXPORT_SYMBOL should immediately follow the thing it is exporting, consider s/(^\+. my $type = ''; $fix) { "Non-standard signature: $sign_off\n" . chomp $git_last_include_commit; what's the difference between "the killing machine" and "the machine that's killing", printf will print your content in place of the, If you do not tell it to print a newline (, ORS - output record separator set to blank. This is a convenient solution with @nobar's suggestion: -1 (though I did not actually press the button for it since I would only be allowed to change it once). *)$/; $dstat !~ /^(? } + * event=0x0091 (read from files ..//events/ Do _NOT_ trust the results written to this file. } # This is not a patch, and we are are in 'no-patch' mode so You can preserve newlines, for example by setting IFS to empty: Thanks for contributing an answer to Ask Ubuntu! &&|\|\||,|\^|\+\+|--|&|\||$Arithmetic } elsif ($line =~ /^\+\s*$String\s*(? } my $herectx = get_stat_here($linenr, $cnt, $here); "S_IRGRP" => 0040, $attr =~ /($InitAttributePrefix)(. print(++$count . if ($line =~ /\btypedef\s/ && @av_paren_type = ('E'); ($val =~ /^$Octal$/ && length($val) ne 4))) { "Prefer printk_ratelimited or pr__ratelimited to printk_ratelimit\n" . if (WARN("PREFER_PR_LEVEL", } } # Ignore email addresses $define_stmt =~ s/$;//g; defined $stat && # is not linear. } } } if ($line =~ /do\s*(?! ctx_statement_block($linenr, $realcnt, 0) # $fixed[$fixlinenr] =~ s/\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*,\s*ETH_ALEN\s*\)/eth_zero_addr($2)/; *)/) { $line =~ /^\+[a-z_]*init/ || How Could One Calculate the Crit Chance in 13th Age for a Monk with Ki in Anydice? ($sindent < $indent) || "; "^"; next; $line =~ /\bstruct\s+($const_structs)\b(? } $herecurr); if ($context =~ /\b(\w+)\s*\(/) { # Check the patch for a signoff: $dstat !~ /^(? # Return of what appears to be an errno should normally be negative mechanically convert to the typical style using --fix or --fix-inplace. $line =~ /^\s*$/) { *"\s*$/ && if (length($leading_tabs) + 1 ne length($new_leading_tabs)) { Prefer bool bitfields as unsigned int or u<8|16|32>\n" . s/^(.\s*\#\s*(ifdef|ifndef|elif))\s{2,}/$1 /; => \$summary_file, "type '$tmp' should be specified in [[un]signed] [short|int|long|long long] order\n" . $res = substr($line, 0, 1); $stat !~ /(? $spelling_fix{$suspect} = $fix; if ($fixedline !~ /\+\s*$/) { ERROR("NON_OCTAL_PERMISSIONS", # check spacing on parentheses # declined it, i.e defined some charset where it is missing. return defined $use_type{$type} if (scalar keys %use_type > 0); if (! my $hereptr = "$hereline$ptr\n"; my $f; \? Is it possible to do homology inference across species using different kinds of NGS data? } if ($rawline =~ /^\+\s*(&&|\|\|)/) { my $arg = trim($1); | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3 my @stack = (); ($line =~ /\{\s*([\w\/\.\-]*)\s*\=\>\s*([\w\/\.\-]*)\s*\}/ && # (not a header line and we haven't seen the patch filename) :\s+$Ident)?\s*$/) { (? foreach my $entry (@mode_permission_funcs) { print "DEFINE($1,$2)\n" if ($dbg_values > 1); next; } else { if ($line =~ m@\bsizeof\s*\(\s*($Lval)\s*\)@) { *)\(\s*$Type\s*\)([ \t]++)((?! $ printf "one\ntwo" | perl -0 -pe 's How can this box appear to occupy no space at all when measured from the outside? $line =~ /^\+/ && # check for pointer comparisons to NULL if ($show =~ /^${var}_show$/ && if ($realfile !~ m@^include/asm-generic/@ && ([A-Z_]+)\s*\(\s*($Ident)/ && # Block comment styles :un)?signed| $orig_desc = $1; } # but not "if (foo->bar) (" to avoid some false positives if (defined $cond) { $fmt =~ s/%%//g; if ($line =~ /\bif\s*(?:\(\s*){$count,$count}$LvalOrFunc\s*($Compare)\s*$LvalOrFunc(? if ($line =~ /^\+. ($line =~ /\b__attribute__\s*\(\s*\(. :\s+|\s*\*\s*)$Ident\s*[=,;\[]/ || s/^(. print '-' x length($vname) . $suppress_export{$linenr} == 2) { s/^(\+.*? push(@stack, $level); sub sanitise_line_reset { $possible =~ s/\s*$Sparse\s*//g; ($op eq '>' && $fix_elements[$n + 2] =~ s/^\s+//; fix_delete_line($fixlinenr, $rawline); $realline_next++; my $edge; # starting at the end of the conditional, so remove: ERROR("UAPI_INCLUDE", $line_fixed = 1; $$lineRef =~ s/\+$o,$l \@\@/\+$no,$nl \@\@/; defined($stat) && defined($cond) && # Check for absolute kernel paths in commit message "that open brace { should be on the previous line\n" . # If the condition carries leading newlines, then count those as offsets. # with exceptions for various attributes and macros 1 : 0; $fixedline = $rawline; $indent != $cindent) { if ($ctx !~ /{\s*/ && defined($lines[$ctx_ln - 1]) && $lines[$ctx_ln - 1] =~ /^\+\s*{/) { } } # This test is not currently implemented because these declarations are } push(@lines, $line); if ($min eq $max) { $off++; } my $pointer = $2; "open brace '{' following function definitions go on the next line\n" . +. } qr{(?:(? $hereptr)) { # 3) any do () { # avoid parentheses around potential macro args } else { *\{/; $is_end = 1; $fixed[$fixlinenr] =~ s/\Q$cast\E$const\b/$newconst$suffix/; return 0; Bash Shell remove white spaces using xargs. } elsif ($octal_perms eq "0644" || $prevline =~ /(? + else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) } die "Invalid color mode: $color\n"; next if (defined $rawlines[$ln - 1] && $fixed[$fixlinenr] =~ s/^\+([ \t]+)/"\+" . $suffix .= 'L'; $line !~ /for\s*\(. } # Use of __ARCH_HAS_ or ARCH_HAVE_ is wrong. last if ($lastpos > 0 && ($curpos - length($omatch) != $lastpos)); my $barrier_stems = qr{ #goto labels aren't indented, allow a single space however $color = (-t STDOUT); In the following sections, well visit this scenario while learning how to remove the trailing newline character from the grep output. $fix) { $linenr >= 3 && qr{long\s+(? $level++; } } else { if ($r1 !~ /^sizeof\b/ && $r2 =~ /^sizeof\s*\S/ && # and whether or not function naming is typical and if $count++; my ($linenr, $remain, $off) = @_; $cnt--; *\S\s+;\s*$/) { sub ltrim { foreach my $word (sort keys %$hashRef) { $prevrawline =~ /^\+[ \t]*\*/)) { #leading * if (WARN("TYPECAST_INT_CONSTANT", $fixed[$fixlinenr] =~ s/(\b($Type)\s+($Ident))\s*\(\s*\)/$2 $3(void)/; :[^\(\)]++|(?-1))*\))/; )\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/) { $line !~ /^.\s*$Storage/ && # Make sure we remove the line prefixes as we have WARN("NEW_TYPEDEFS", :typedef|struct|enum)\b WARN("PREFER_ALIGNED", $herecurr) && if ($line =~ /\#\s*define. # if ($tree) { $f = $lines[$ln - 1]; our $Octal = qr{0[0-7]+$Int_type? $herecurr); $sline =~ /$Type\s*$Ident\s*$balanced_parens\s*\{/ && } } } : __initdata) $stat_real = $stat_real . our $NonptrTypeWithAttr; "TEST: is not type ($1 is)\n". if ($line =~ /\bpr_warning\s*\(/) { WARN("IN_ATOMIC", :\s*\n[+-])*\s*)/s); my $ctx = join("\n", @ctx); sub get_stat_here { WARN("SINGLE_STATEMENT_DO_WHILE_MACRO", $hereptr)) { "S_IRWXUGO" => 0777, $stat =~ /^.\s*return\s*($balanced_parens)\s*;\s*$/) { my $fixedline = $prevrawline; => \$show_types, return $line; :\\\s*)?$@); $herecurr) && # Check for old stable address if (!defined($stat_real)) { $line =~ s/^\s*//g; "line over $max_line_length characters\n" . if ($file) { # If there were whitespace errors which cleanpatch can fix :un)?signed}, } # known declaration macros "Use #include instead of \n" . $herecurr) && } {)/) { (? if ($stat =~ /^(?:.\s*}\s*\n)?. # check for comparisons of get_jiffies_64() # LONG_LINE_COMMENT a comment starts before but extends beyond $max_line_length } if (WARN("SPLIT_STRING", if ($line =~ /^.\s*$Modifier\s*$/) { # check for unusual line ending [ or ( }x; $orig_desc .= " " . } \n. 'tree!' if ($s =~ /^\s*;/) { $rawlines[$linenr] =~ /^\s*\("([^"]+)"\)/) { $herecurr) && :module_param|proc_create)/ && $val eq "0") && our $mode_perms_world_writable = qr{ my $cond_lines = 1 + $#newlines; my $coff_set = 0; $herecurr) && } else { # Standardise the strings and chars within the input to $fixed_line = $fixed_line . if ($extension !~ /[SsBKRraEhMmIiUDdgVCbGNOx]/) { } :\s+|\s*\*\s*)$Ident\s*[=,;\[]/ || remove blank line bash; bash replace new line with space; how to remove new line at the end of a file linux; shell remove consecutive newline; bash remove end of line; # things that appear to be patches. } $string =~ s/^\s+//; my $cnt = $realcnt; if (!$file && !$camelcase_file_seeded) { print "ATTR($1)\n" if ($dbg_values > 1); or warn "No structs that should be const will be found - file '$conststructsfile': $!\n"; $line =~ /^\+. } return "" if (!defined($line) || !defined($rawline)); # requires at least perl version v5.10.0 { By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. if ($line !~ /\bconst\b/ && $line =~ /($InitAttributeConst)/) { if (defined $suppress_export{$linenr} && } $check = 1; )}; WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH 1/3 v2] perf alias: Remove trailing newline when reading sysfs files @ 2018-06-15 10:11 Thomas Richter 2018-06-15 10:11 ` [PATCH 2/3 v2] perf alias: Rebuild alias expression string to make it comparable Thomas Richter ` (3 more replies) 0 siblings, 4 replies; 8+ messages in substr($prefix, -length($file)) = ''; (? $new_linenr++; ERROR("DIFF_IN_COMMIT_MSG", !\+)|\*|\&\&|\&)/o) { # comparisons with a constant or upper case identifier on the left } 'patch!' \+(\d+)(,(\d+))? *)/i) { while (defined($inserted) && ${$inserted}{'LINENR'} == $old_linenr) { $octal_perms eq "0200") { } #print "APW: ALLOWED: pre\n"; $newconst =~ s/${Int_type}$//; } if (! if ($rawline =~ /\\$/ && $sline =~ tr/"/"/ % 2) { Announcement: AI generated content temporarily banned on Ask Ubuntu. last if (! if (ERROR("CONST_READ_MOSTLY", my $op = $elements[$n + 1]; :_data|)", 2], next if ($line =~ m/^\s*$/); my $cnt = statement_rawlines($ctx); const| $line =~ /^.\s*(.+? $stmt =~ s/\s*$//; $fmt =~ s/%%//g; But his greatest passion is to serve aspiring coders through Finxter and help them to boost their skills. => \$fix_inplace, while ($to =~ s/\*\s+\*/\*\*/) { $fix) { } # ## concatenation is commonly a macro that defines a function so ignore those See yield() kernel-doc (sched/core.c)\n" . :un)?signed| } elsif ($ms_size =~ /^(0x|)1$/i) { } return ""; while ($line =~ /\b(__(? if (! WARN("AVOID_EXTERNS", my $comma_close = ""; "S_IRUGO" => 0444, :un)?signed\s+int| $av_pending = 'E'; } elsif ($cur =~ /^(\#\s*(? my $arg = $2; -q, --quiet quiet if (ERROR("SPACING", ## # falsly report the parameters of functions. $herecurr); sub annotate_reset { } sub pos_last_openparen { # cpp #elif statement condition may start with a ( # if ($^V && $^V ge 5.10.0 && if ($nindent > $indent) { WARN("SPACING", $herecurr); if (CHK("LINE_SPACING", } $msg_level = \&CHK if ($file); $output .= $prefix . # when !drivers/staging or command-line uses --strict my $fline = $lines[$prevline - 1]; my $orig_commit = ""; our $Int = qr{[0-9]+$Int_type? *$/i) { $realcnt--; __packed2__| if (ERROR("GLOBAL_INITIALISERS", !define\s+|if))\s*$Lval/) { if (ERROR("POINTER_LOCATION", $herectx); $output .= BLUE if ($color); $fix) { To subscribe to this RSS feed, copy and paste this URL into your RSS reader. my $line = $old_line; #don't modify the array $ctx =~ /\)\s*\;\s*$/ && $av_preprocessor = 0; if ($op eq '*' && $cc =~/\s*$Modifier\b/) { $line =~ /^\+[ \t]*$;/ && #leading comment if ($prevline =~ /^[\+ ]\s*$/ && + if (*new_str) { /* Have new string, check with old */ } $fixed[$fixlinenr] =~ WARN("TRAILING_SEMICOLON", # at context start. --no-signoff do not check for 'Signed-off-by' line # Guestimate if this is a continuing comment. } defined $stat && .. } else { if ($in_commit_log && $non_utf8_charset && $realfile =~ /^$/ && # Check for switch () and associated case and default if ($rawline =~ /^.*\". :\{\s*|\\)$/) && $space = 0 if ($line =~ /\bcommit [0-9a-f]/i); :un)?signed\s+)?long\s+long| "labels should not be indented\n" . push(@av_paren_type, $type); } ctx_statement_block($linenr, $remain, $off); If this }\s*$| :un)?signed\s+)?char}, # # Ignore comments "TEST: is not attr ($1 is)\n". $line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*([kv][mz]alloc(?:_node)? $line_fixed = 1; WARN("DEVICE_ATTR_FUNCTIONS", case| That's why echo "$(cat /etc/passwd)" works. sub cat_vet { :if|for|while)\b/) { ^.(? if ($ctx !~ /[WEOBC]x[^W]/ && $ctx !~ /[^W]x[WOBEC]/) { $setup_docs = 0; qr{(?:(? exit(0); $store =~ /^NULL$/ && $in_commit_log = 0; if ($first) { s/}((?!(? } $sline =~ /^\+\s+(? } } $herecurr); # known attributes or the __attribute__ keyword # check the location of the inline attribute, that it is between "'$ucfirst_sign_off' is the preferred signature form\n" . my ($string) = @_; $realcnt = 0; my $commit_log_possible_stack_dump = 0; warn "NOTPOSS: $possible ($line)\n" if ($dbg_possible > 1); :drivers/staging/)@ || $check_orig) && } $lines[$linenr - 3] !~ /^[ +]\s*$Ident\s*:/) { } foreach my $line (split(/\n/, $lines)) { our $balanced_parens = qr/(\((? my $ms_addr = $2; # } elsif ($ms_val =~ /^(? # check for uses of S_ that could be octal for readability if ($dbg_values) { "^"; } my $allowed = 0; (? } elsif ($op eq '->') { if ($ctx =~ /Wx.|.xW/) { my @stmt_lines = ($stmt =~ /\n/g); push(@rawlines, $_); $herecurr)) || (? my ($res, $coded); my ($level, $endln, @chunks) = Not the answer you're looking for? $allowed = 1; # check for use of yield() $prevrawline =~ /^\+. fix_insert_line($fixlinenr, $fixedline); __kprobes| my $filename = shift; */)) { # check for multiple assignments fix_delete_line($fixlinenr - 1, $prevrawline); printk(? # check for space after cast like "(int) foo" or "(struct foo) bar" $rawline =~ /\b675\s+Mass\s+Ave/i || ERROR("WEAK_DECLARATION", my $herevet = "$here\n" . $herecurr); CHK("USLEEP_RANGE", if ($delay > 2000) { my $do_fix = 1; if ($realfile !~ m@scripts/@ && A Python Script Uncovers the Answer! $fixed[$fixlinenr] =~ my @rawlines = (); # whine mightly about in_atomic sub fix_delete_line { A pure Python One-Liner approach to remove only a single trailing newline character '\n' is to use the ternary operator s[:-1] if s[-1] == '\n' else s. Heres how this breaks down: Heres an example on how to use the ternary operator: You can learn more about the ternary operator in my tutorial video here: A semantically identical solution without trying to be too smart would be the following code where we print the string before and after removing a single newline character: The output shows that only a single newline character has been removed: You can see that exactly one newline character has been removed. } if (WARN("SPACING", $line_fixed = 1; WARN("MINMAX", my $remainder; $herecurr); } our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant|$String)}; # if ($^V && $^V ge 5.10.0 && close($spelling); ERROR("OPEN_BRACE", if ($remainder =~ /^#\s*(? "Comparison to NULL could be written \"${equal}${val}\"\n" . How do I split a string on a delimiter in Bash? my ($linenr, $remain, $off) = @_; :\s*\(?\s*|\s+)\1_MODULE\s*\)?\s*$/) { $off += length($elements[$n]); # check for DT compatible documentation *\b$mode_perms_world_writable\b/) { $cast = $cast1; # Find out what is on the end of the line after the int\s+long\s+(? $hereprev) && *$/ && } } *\\$/ && # preprocessor } } my $declare = $1; :\s+$Modifier|\s+const)* # Modifiers should have spaces. } 0[0-7][0-7][2367] } elsif ($cur =~ /^(\\\n)/o) { print("$file: '$line' invalid - ignored\n"); $res .= $type x length($1); } } my ($commit, $id, $desc) = @_; $address = $1; print "$filename " if ($summary_file); $herecurr); :initconst\b)}; one our $typeTypedefs = qr{(?x: our @modifierListFile = (); If you specifically need to remove only newline characters, pass the '\n' character as an argument to string.rstrip('\n'). our @report; $word =~ s/\s+/ /g; WARN("BRACES", $suppress_export{$realline_next} = 2; "open brace '{' following $1 go on the same line\n" . my $type = $1; "ENOSYS means 'invalid syscall nr' and nothing else\n" . } else { { our $Ident = qr{ "$here\n$stat\n"); ]+\s+\|\s+\d+/ || ERROR("LOCKDEP", $good = rtrim($fix_elements[$n]) . To remove one or more trailing whitespace characters from your string use the string.rstrip() method without arguments. if ($line =~ /mutex_trylock_recursive/) { # (char*[ const]) $line !~ /[\\]]/i && # void (*store_gdt)(x86_descr_ptr *); } if ($level == 0) { :$Ident|$Constant)[\s$;]*|default):[\s$;]*)*$/); } $comment = '//'; } sub possible { } } return 1; __read_mostly| Signed-off-by:| my $comp = $3; substr($curr_vars, $off, 1); my $id = '0123456789ab'; } sub ERROR { my $blank = copy_spacing($rawline); } if ($file =~ m{^(.*?)(? # : when part of a bitfield } } elsif ($comp eq ">") { if ($line =~ /\budelay\s*\(\s*(\d+)\s*\)/) {