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taxprofiler/subworkflows/local/shortread_adapterremoval.nf
2022-04-05 10:53:04 +02:00

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/*
Process short raw reads with AdapterRemoval
*/
include { ADAPTERREMOVAL as ADAPTERREMOVAL_SINGLE } from '../../modules/nf-core/modules/adapterremoval/main'
include { ADAPTERREMOVAL as ADAPTERREMOVAL_PAIRED } from '../../modules/nf-core/modules/adapterremoval/main'
include { CAT_FASTQ } from '../../modules/nf-core/modules/cat/fastq/main'
workflow SHORTREAD_ADAPTERREMOVAL {
take:
reads // [[meta], [reads]]
main:
ch_versions = Channel.empty()
ch_multiqc_files = Channel.empty()
ch_input_for_adapterremoval = reads
.branch{
single: it[0].single_end
paired: !it[0].single_end
}
ADAPTERREMOVAL_SINGLE ( ch_input_for_adapterremoval.single, [] )
ADAPTERREMOVAL_PAIRED ( ch_input_for_adapterremoval.paired, [] )
/*
* Due to the ~slightly~ very ugly output implementation of the current AdapterRemoval2 version, each file
* has to be exported in a separate channel and we must manually recombine when necessary.
*/
if ( params.shortread_clipmerge_mergepairs && !params.shortread_clipmerge_excludeunmerged ) {
ch_concat_fastq = Channel.empty()
.mix(
ADAPTERREMOVAL_PAIRED.out.collapsed,
ADAPTERREMOVAL_PAIRED.out.collapsed_truncated,
ADAPTERREMOVAL_PAIRED.out.singles_truncated,
ADAPTERREMOVAL_PAIRED.out.paired_truncated
)
.groupTuple()
.map { [it.head(), it.tail().flatten()] }
CAT_FASTQ(ch_concat_fastq)
ch_adapterremoval_reads_prepped = CAT_FASTQ.out.reads
.mix(ADAPTERREMOVAL_SINGLE.out.singles_truncated)
} else if ( params.shortread_clipmerge_mergepairs && params.shortread_clipmerge_excludeunmerged ) {
ch_concat_fastq = Channel.empty()
.mix(
ADAPTERREMOVAL_PAIRED.out.collapsed,
ADAPTERREMOVAL_PAIRED.out.collapsed_truncated
)
.map { meta, reads ->
meta.single_end = true
[meta, reads]
}
.groupTuple()
CAT_FASTQ(ch_concat_fastq)
ch_adapterremoval_reads_prepped = CAT_FASTQ.out.reads
.mix(ADAPTERREMOVAL_SINGLE.out.singles_truncated)
} else {
ch_adapterremoval_reads_prepped = ADAPTERREMOVAL_PAIRED.out.paired_truncated
.mix(ADAPTERREMOVAL_SINGLE.out.singles_truncated)
}
ch_versions = ch_versions.mix( ADAPTERREMOVAL_SINGLE.out.versions.first() )
ch_versions = ch_versions.mix( ADAPTERREMOVAL_PAIRED.out.versions.first() )
ch_multiqc_files = ch_multiqc_files.mix(
ADAPTERREMOVAL_PAIRED.out.settings.collect{it[1]},
ADAPTERREMOVAL_SINGLE.out.settings.collect{it[1]}
)
emit:
reads = ch_adapterremoval_reads_prepped // channel: [ val(meta), [ reads ] ]
versions = ch_versions // channel: [ versions.yml ]
mqc = ch_multiqc_files
}