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package LatexIndent::FileExtension;
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# See http://www.gnu.org/licenses/.
#
# Chris Hughes, 2017
#
# For all communication, please visit: https://github.com/cmhughes/latexindent.pl
use strict;
use warnings;
use utf8;
use PerlIO::encoding;
use open ':std', ':encoding(UTF-8)';
use File::Basename; # to get the filename and directory path
use Exporter qw/import/;
use Log::Log4perl qw(get_logger :levels);
use LatexIndent::GetYamlSettings qw/%masterSettings/;
use LatexIndent::Switches qw/%switches/;
our @EXPORT_OK = qw/file_extension_check/;
sub file_extension_check{
my $self = shift;
# grab the logger object
my $logger = get_logger("Document");
# grab the filename
my $fileName = ${$self}{fileName};
# grab the file extension preferences
my %fileExtensionPreference= %{$masterSettings{fileExtensionPreference}};
# sort the file extensions by preference
my @fileExtensions = sort { $fileExtensionPreference{$a} <=> $fileExtensionPreference{$b} } keys(%fileExtensionPreference);
# get the base file name, allowing for different extensions (possibly no extension)
my ($name, $dir, $ext) = fileparse($fileName, @fileExtensions);
${$self}{baseName} = $name;
# check to make sure given file type is supported
if( -e $fileName and !$ext ){
my $message = "The file $fileName exists , but the extension does not correspond to any given in fileExtensionPreference; consinder updating fileExtensionPreference.";
$logger->fatal("*$message");
die($message);
}
# if no extension, search according to fileExtensionPreference
if ($fileName ne "-"){
if (!$ext) {
$logger->info("*File extension work:");
$logger->info("latexindent called to act upon $fileName with a file extension;\nsearching for file with an extension in the following order (see fileExtensionPreference):");
$logger->info(join("\n",@fileExtensions));
my $fileFound = 0;
# loop through the known file extensions (see @fileExtensions)
foreach (@fileExtensions ){
if ( -e $fileName.$_ ) {
$logger->info("$fileName$_ found!");
$fileName .= $_;
$logger->info("Updated fileName to $fileName");
${$self}{fileName} = $fileName ;
$fileFound = 1;
$ext = $_;
last;
}
}
unless($fileFound){
$logger->fatal("*I couldn't find a match for $fileName in fileExtensionPreference (see defaultSettings.yaml)");
foreach (@fileExtensions ){
$logger->fatal("I searched for $fileName$_");
}
$logger->fatal("but couldn't find any of them.\nConsider updating fileExtensionPreference.\nExiting, no indendation done.");
die "I couldn't find a match for $fileName in fileExtensionPreference.\nExiting, no indendation done.";
}
} else {
# if the file has a recognised extension, check that the file exists
unless( -e $fileName ){
my $message = "I couldn't find $fileName, are you sure it exists?.\nNo indentation done.\nExiting.";
$logger->fatal("*$message");
die $message;
}
}
}
# store the file extension
${$self}{fileExtension} = $ext;
# check to see if -o switch is active
if($switches{outputToFile}){
$logger->info("*-o switch active: output file check");
if ($fileName eq "-" and $switches{outputToFile} =~ m/^\+/){
$logger->info("STDIN input mode active, -o switch is removing all + symbols");
$switches{outputToFile} =~ s/\+//g;
}
# the -o file name might begin with a + symbol
if($switches{outputToFile} =~ m/^\+(.*)/ and $1 ne "+"){
$logger->info("-o switch called with + symbol at the beginning: $switches{outputToFile}");
$switches{outputToFile} = ${$self}{baseName}.$1;
$logger->info("output file is now: $switches{outputToFile}");
}
my $strippedFileExtension = ${$self}{fileExtension};
$strippedFileExtension =~ s/\.//;
$strippedFileExtension = "tex" if ($strippedFileExtension eq "");
# grab the name, directory, and extension of the output file
my ($name, $dir, $ext) = fileparse($switches{outputToFile}, $strippedFileExtension);
# if there is no extension, then add the extension from the file to be operated upon
if(!$ext){
$logger->info("-o switch called with file name without extension: $switches{outputToFile}");
$switches{outputToFile} = $name.($name=~m/\.\z/ ? q() : ".").$strippedFileExtension;
$logger->info("Updated to $switches{outputToFile} as the file extension of the input file is $strippedFileExtension");
}
# the -o file name might end with ++ in which case we wish to search for existence,
# and then increment accordingly
$name =~ s/\.$//;
if($name =~ m/\+\+$/){
$logger->info("-o switch called with file name ending with ++: $switches{outputToFile}");
$name =~ s/\+\+$//;
$name = ${$self}{baseName} if ($name eq "");
my $outputFileCounter = 0;
my $fileName = $name.$outputFileCounter.".".$strippedFileExtension;
$logger->info("will search for existence and increment counter, starting with $fileName");
while( -e $fileName ){
$logger->info("$fileName exists, incrementing counter");
$outputFileCounter++;
$fileName = $name.$outputFileCounter.".".$strippedFileExtension;
}
$logger->info("$fileName does not exist, and will be the output file");
$switches{outputToFile} = $fileName;
}
}
# read the file into the Document body
my @lines;
if($fileName ne "-"){
open(MAINFILE, $fileName) or die "Could not open input file, $fileName";
push(@lines,$_) while(<MAINFILE>);
close(MAINFILE);
} else {
push(@lines,$_) while (<>)
}
# the all-important step: update the body
${$self}{body} = join("",@lines);
}
1;
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