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#!/usr/bin/perl
use strict;
use warnings;
# Parse arguments, a simple state machine for input like:
#
# <file-to-check.txt> <valid-files-to-link-to> --section=1 git.txt git-add.txt [...] --to-lint git-add.txt a-file.txt [...]
my %TXT;
my %SECTION;
my $section;
my $lint_these = 0;
my $to_check = shift @ARGV;
for my $arg (@ARGV) {
if (my ($sec) = $arg =~ /^--section=(\d+)$/s) {
$section = $sec;
next;
}
my ($name) = $arg =~ /^(.*?)\.txt$/s;
unless (defined $section) {
$TXT{$name} = $arg;
next;
}
$SECTION{$name} = $section;
}
my $exit_code = 0;
sub report {
my ($pos, $line, $target, $msg) = @_;
substr($line, $pos) = "' <-- HERE";
$line =~ s/^\s+//;
print STDERR "$ARGV:$.: error: $target: $msg, shown with 'HERE' below:\n";
print STDERR "$ARGV:$.:\t'$line\n";
$exit_code = 1;
}
@ARGV = sort values %TXT;
die "BUG: No list of valid linkgit:* files given" unless @ARGV;
@ARGV = $to_check;
while (<>) {
my $line = $_;
while ($line =~ m/linkgit:((.*?)\[(\d)\])/g) {
my $pos = pos $line;
my ($target, $page, $section) = ($1, $2, $3);
# De-AsciiDoc
$page =~ s/{litdd}/--/g;
if (!exists $TXT{$page}) {
report($pos, $line, $target, "link outside of our own docs");
next;
}
if (!exists $SECTION{$page}) {
report($pos, $line, $target, "link outside of our sectioned docs");
next;
}
my $real_section = $SECTION{$page};
if ($section != $SECTION{$page}) {
report($pos, $line, $target, "wrong section (should be $real_section)");
next;
}
}
# this resets our $. for each file
close ARGV if eof;
}
exit $exit_code;
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