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Code Editor : csv-check
#!/usr/bin/perl # csv-check: Check validity of CSV file and report # (m)'20 [21 May 2020] Copyright H.M.Brand 2007-2021 # This code requires the defined-or feature and PerlIO use 5.12.0; use warnings; use Data::Peek; use Encode qw( decode encode ); our $VERSION = "2.05"; # 2020-05-21 my $cmd = $0; $cmd =~ s{.*/}{}; sub usage { my $err = shift and select STDERR; print <<"EOU"; usage: $cmd [-s <sep>] [-q <quot>] [-e <esc>] [-u] [--pp] [file.csv] -s S --sep=S use S as seperator char. Auto-detect, default = ',' the string "tab" is allowed. -q Q --quo=Q use Q as quote char. Auto-detect, default = '"' the string "undef" will disable quotation. -e E --esc=E use E as escape char. Auto-detect, default = '"' the string "undef" will disable escapes. -N --nl force EOL to \\n -C --cr force EOL to \\r -M --crnl force EOL to \\r\\n -u --utf-8 check if all fields are valid unicode -E E --enc=E open file with encoding E -h --hdr check with header (implies BOM) -b --bom check with BOM (no header) -f --skip-formula do not check formula's --pp use Text::CSV_PP instead (cross-check) -A a --attr=at:val pass attributes to parser --at=val is also supported for know attributes -L --list-attr list supported CSV attributes -X --list-changes list attributes that changed from default EOU exit $err; } # usage use Getopt::Long qw(:config bundling passthrough); my $eol; GetOptions ( "help|?" => sub { usage (0); }, "V|version" => sub { say "$cmd [$VERSION]"; exit 0; }, "c|s|sep=s" => \(my $sep = ""), "q|quo|quote=s" => \(my $quo = '"'), "e|esc|escape=s" => \(my $esc = '"'), "N|nl!" => sub { $eol = "\n"; }, "C|cr!" => sub { $eol = "\r"; }, "M|crnl!" => sub { $eol = "\r\n"; }, "B|binary!" => \(my $bin = 1), "u|utf|utf8|utf-8!" => \(my $opt_u = 0), "E|enc|encoding=s" => \(my $enc), "h|hdr|header!" => \(my $opt_h = 0), "b|bom!" => \(my $opt_b = 0), "f|skip-formula!" => \(my $opt_f = 0), "A|attr=s" => \ my @opt_A, "L|list-attr!" => \ my $opt_L, "X|list-changes!" => \ my $opt_X, "pp!" => \(my $opt_p = 0), "v|verbose:1" => \(my $opt_v = 0), ) or usage (1); $opt_X and $opt_L++; my $csvmod = "Text::CSV_XS"; if ($opt_p) { require Text::CSV_PP; $csvmod = "Text::CSV_PP"; } else { require Text::CSV_XS; } $csvmod->import (); binmode STDOUT, ":encoding(utf-8)"; binmode STDERR, ":encoding(utf-8)"; my $fn = $ARGV[0] // "-"; my @warn; my %csvarg = ( sep_char => $sep eq "tab" ? "\t" : $sep, quote_char => $quo eq "undef" ? undef : $quo, escape_char => $esc eq "undef" ? undef : $esc, eol => $eol, binary => $bin, keep_meta_info => 1, auto_diag => 1, formula => $opt_f ? "none" : "diag", ); { my $p = $csvmod->new; my %ka = map { $_ => $p->{$_} } grep m/^[a-z]/ => $p->known_attributes; foreach my $i (reverse 0 .. $#ARGV) { if ($ARGV[$i] =~ m/^--(no[-_])?+([-\w]+)(?:=(.*))?$/) { my ($attr, $val) = (lc $2 =~ tr/-/_/r, $3 // ($1 ? 0 : 1)); if (exists $ka{$attr}) { unshift @opt_A, "$attr:$val"; splice @ARGV, $i, 1; } } } for (@opt_A) { m/^([-\w]+)(?:[:=](.*))?/ or next; my ($attr, $val) = (lc $1 =~ tr/-/_/r, $2 // 1); exists $ka{$attr} or next; $val eq "undef" || !length $val and $val = undef; # -A escape_char: $csvarg{$attr} = $val; } if ($opt_L) { $csvarg{sep_char} ||= $ka{sep_char}; foreach my $attr (sort keys %ka) { $ka{$attr} //= "(undef)"; $csvarg{$attr} //= $ka{$attr}; $opt_X and $csvarg{$attr} eq $ka{$attr} and next; printf " %-21s : %s\n", $attr, $csvarg{$attr}; } exit 0; } } $opt_v > 1 and DDumper \%csvarg; my $data = do { local $/; <> } or die "No data to analyze\n"; my ($rows, %cols, $s_eol) = (0); unless ($sep) { # No sep char passed, try to auto-detect; my ($first_line) = ($data =~ m/\A(.*?)(?:\r\n|\n|\r)/); $first_line ||= $data; # if no EOL at all, use whole set $sep = $first_line =~ m/["\d],["\d,]/ ? "," : $first_line =~ m/["\d];["\d;]/ ? ";" : $first_line =~ m/["\d]\t["\d]/ ? "\t" : # If neither, then for unquoted strings $first_line =~ m/\w,[\w,]/ ? "," : $first_line =~ m/\w;[\w;]/ ? ";" : $first_line =~ m/\w\t[\w]/ ? "\t" : ","; $data =~ m/([\r\n]+)\Z/ and $s_eol = DDisplay "$1"; $csvarg{sep_char} = $sep; } my $csv = $csvmod->new (\%csvarg); $opt_v > 8 and DDumper $csv; $bin = 0; # Assume ASCII only sub done { my $file = $ARGV // "STDIN"; (my $pv = "$]0000000") =~ s{^([0-9]+)\.([0-9]{3})([0-9]{3})[0-9]*} {sprintf "%d.%d.%d",$1,$2,$3}e; my $uv = eval { no warnings; (my $cv = $]) =~ s/0+$//; eval { require Unicode::UCD; Unicode::UCD::UnicodeVersion () } || eval { require Module::CoreList; $Module::CoreList::version{$cv}{Unicode} }; } || "unknown"; say "Checked $file with $cmd $VERSION\nusing $csvmod @{[$csvmod->VERSION]} with perl $pv and Unicode $uv"; my @diag = $csv->error_diag; my $line = $. // $csv->record_number // "?"; if ($diag[0] == 2012 && $csv->eof) { my @coll = sort { $a <=> $b } keys %cols; local $" = ", "; my $cols = @coll == 1 ? $coll[0] : "(@coll)"; $s_eol //= $csv->eol || "--unknown--"; $s_eol =~ m/[\x00-\x1f]/ and $s_eol = DDisplay $s_eol; say "OK: rows: $rows, columns: $cols"; say " sep = <$sep>, quo = <$quo>, bin = <$bin>, eol = <$s_eol>"; say " encoding = $csv->{ENCODING}" if $csv->{ENCODING}; if (@coll > 1) { say "multiple column lengths:"; printf " %6d line%s with %4d field%s\n", $cols{$_}, $cols{$_} == 1 ? " " : "s", $_, $_ == 1 ? "" : "s" for @coll; } $diag[0] = 0; } elsif ($diag[2]) { say "$ARGV record $diag[3] at line $line/$diag[2] - $diag[0] - $diag[1]"; my $ep = $diag[2] - 1; # diag[2] is 1-based my $ei = $csv->error_input; if (defined $ei) { my $l = 0; my $s = ""; eval { my $u = decode ("utf-8", $ei); $ei = $u }; for (split m/([^ -~])/ => $ei) { if (m/^[ -~]+$/) { $s .= $_; $l += length; next; } if ($_ eq "\t") { $s .= "\\t"; $ep > $l and $ep++; $l += 2; next; } if ($_ eq "\n") { $s .= "\\n"; $ep > $l and $ep++; $l += 2; next; } if ($_ eq "\r") { $s .= "\\r"; $ep > $l and $ep++; $l += 2; next; } $s .= sprintf "\\x{%05x}", ord; $ep > $l and $ep += 9 - length encode "utf-8", $_; $l += 9; } say " |$s|"; # 2b06 say " |", " " x $ep, "\x{25b2}", " " x (length ($s) - $ep - 1), "|"; } } else { say "$ARGV line $line - $diag[1]"; } print for @warn; exit $diag[0]; } # done sub show { say STDERR join ", " => map { "\x{231e}$_\x{231d}" } @_; } # show sub stats { my $r = shift; $cols{scalar @$r}++; grep { $_ & 0x0002 } $csv->meta_info and $bin = 1; $opt_v > 2 and show (@$r); if ($opt_u) { my @r = @$r; foreach my $x (0 .. $#r) { utf8::is_utf8 ($r[$x]) and next; local $SIG{__WARN__} = sub { (my $msg = shift) =~ s{ at /\S+Encode.pm.*}{}; my @h = $csv->column_names; push @warn, sprintf "Field %d%s in record %d - '%s'\t- %s", $x + 1, @h ? " (column: '$h[$x]')" : "", $rows, DPeek ($r[$x]), $msg; }; my $oct = decode ("utf-8", $r[$x], Encode::FB_WARN); } } } # stats my $mode = $enc ? "<:encoding($enc)" : "<"; open my $fh, $mode, \$data or die "$fn: $!\n"; if ($opt_h) { $csv->header ($fh); } elsif ($opt_b) { my @hdr = $csv->header ($fh, { detect_bom => 1, set_column_names => 0 }); stats \@hdr; } local $SIG{__WARN__} = sub { push @warn, @_; }; while (my $row = $csv->getline ($fh)) { $rows++; stats $row; } done;
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