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1 #!/usr/bin/perl -w
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2 #Filename:
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3 #Author: Tian Dongmei
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4 #Email: tiandm@big.ac.cn
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5 #Date: 2013/7/19
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6 #Modified:
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7 #Description:
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8 my $version=1.00;
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9
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10 use strict;
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11 use Getopt::Long;
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12 use File::Basename;
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13
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14 my %opts;
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15 GetOptions(\%opts,"i=s","ref=s","index:s","v:i","p:i","o=s","h");
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16 if (!(defined $opts{i} and defined $opts{o} ) || defined $opts{h}) { #necessary arguments
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17 &usage;
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18 }
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19
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20 my $filein=$opts{'i'};
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21 my $fileout=$opts{'o'};
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22 unless ($fileout=~/\/$/) {$fileout.="/";}
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23 my $rfam=$opts{'ref'};
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24 my $mis=defined $opts{'v'}? $opts{'v'} : 0;
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25 my $index=defined $opts{'index'} ? $opts{'index'} : "";
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26 my $threads=defined $opts{'p'} ? $opts{'p'} : 1;
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27
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28
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29 #my $time=time();
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30
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31 #my $mapdir=$fileout."/rfam_match_".$time;
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32 my $mapdir=$fileout."/rfam_match";
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33 mkdir $mapdir;
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34 chdir $mapdir;
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35 ###check genome index
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36 if (-s $index.".1.ebwt") {
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37 }else{
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38 &checkACGT($rfam);
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39 `bowtie-build $rfam rfam`;
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40 $index="rfam";
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41 }
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42
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43 #chdir "rfam_match_1397022331";
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44 ### genome mapping
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45 `bowtie -v $mis -f -p $threads -k 1 $index $filein --al rfam_mapped.fa --un rfam_not_mapped.fa > rfam_mapped.bwt`;
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46
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47 sub checkACGT{
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48 my $string;
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49 open IN,"<$rfam";
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50 while (my $aline=<IN>) {
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51 if ($aline!~/^>/) {
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52 $aline=~s/U/T/gi;
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53 }
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54 $string .=$aline;
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55 }
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56 close IN;
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57 $rfam=basename($rfam);
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58 open OUT, ">$rfam";
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59 print OUT $string;
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60 close OUT;
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61 }
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62
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63 sub usage{
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64 print <<"USAGE";
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65 Version $version
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66 Usage:
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67 $0 -i -o
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68 options:
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69 -i input file# input reads fasta/fastq file
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70 -ref input file# rfam file, which do not contain miRNAs
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71 -index file-prefix #(must be indexed by bowtie-build) The parameter
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72 string must be the prefix of the bowtie index. For instance, if
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73 the first indexed file is called 'h_sapiens_37_asm.1.ebwt' then
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74 the prefix is 'h_sapiens_37_asm'.##can be null
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75 -v <int> report end-to-end hits w/ <=v mismatches; ignore qualities,default 0;
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76
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77 -p/--threads <int> number of alignment threads to launch (default: 1)
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78
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79 -o output directory
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80
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81 -h help
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82 USAGE
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83 exit(1);
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84 }
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85
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