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head-genome.go
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head-genome.go
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// Copyright © 2016-2019 Wei Shen <shenwei356@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package cmd
import (
"fmt"
"io"
"runtime"
"github.com/shenwei356/bio/seq"
"github.com/shenwei356/bio/seqio/fastx"
"github.com/shenwei356/util/stringutil"
"github.com/shenwei356/xopen"
"github.com/spf13/cobra"
)
// headGenomeCmd represents the head command
var headGenomeCmd = &cobra.Command{
Use: "head-genome",
Short: "print sequences of the first genome with common prefixes in name",
Long: `print sequences of the first genome with common prefixes in name
For a FASTA file containing multiple contigs of strains (see example below),
these's no list of IDs available for retrieving sequences of a certain strain,
while descriptions of each strain share the same prefix.
This command is used to restrieve sequences of the first strain,
i.e., "Vibrio cholerae strain M29".
>NZ_JFGR01000001.1 Vibrio cholerae strain M29 Contig_1, whole genome shotgun sequence
>NZ_JFGR01000002.1 Vibrio cholerae strain M29 Contig_2, whole genome shotgun sequence
>NZ_JFGR01000003.1 Vibrio cholerae strain M29 Contig_3, whole genome shotgun sequence
>NZ_JSTP01000001.1 Vibrio cholerae strain 2012HC-12 NODE_79, whole genome shotgun sequence
>NZ_JSTP01000002.1 Vibrio cholerae strain 2012HC-12 NODE_78, whole genome shotgun sequence
Attention:
1. Sequences in file should be well organized.
`,
Run: func(cmd *cobra.Command, args []string) {
config := getConfigs(cmd)
alphabet := config.Alphabet
idRegexp := config.IDRegexp
outFile := config.OutFile
lineWidth := config.LineWidth
seq.AlphabetGuessSeqLengthThreshold = config.AlphabetGuessSeqLength
seq.ValidateSeq = false
runtime.GOMAXPROCS(config.Threads)
minWords := getFlagPositiveInt(cmd, "mini-common-words")
files := getFileListFromArgsAndFile(cmd, args, true, "infile-list", true)
outfh, err := xopen.Wopen(outFile)
checkError(err)
defer outfh.Close()
var record *fastx.Record
var fastxReader *fastx.Reader
var prefixes, words []string
var i, N int
var nSharedWords, pNSharedWords int
for _, file := range files {
fastxReader, err = fastx.NewReader(alphabet, file, idRegexp)
checkError(err)
for {
record, err = fastxReader.Read()
if err != nil {
if err == io.EOF {
break
}
checkError(err)
break
}
if fastxReader.IsFastq {
config.LineWidth = 0
fastx.ForcelyOutputFastq = true
}
if len(record.Desc) == 0 {
checkError(fmt.Errorf("no description: %s", record.ID))
}
if prefixes == nil { // first record
record.FormatToWriter(outfh, config.LineWidth)
prefixes = stringutil.Split(string(record.Desc), "\t ")
continue
}
words = stringutil.Split(string(record.Desc), "\t ")
if len(words) < len(prefixes) {
N = len(words)
} else {
N = len(prefixes)
}
nSharedWords = 0
for i = 0; i < N; i++ {
if words[i] != prefixes[i] {
break
}
nSharedWords++
}
if nSharedWords < minWords {
return
}
if pNSharedWords == 0 { // 2nd sequence
pNSharedWords = nSharedWords
} else if nSharedWords != pNSharedWords { // number of shared words changed
return
}
record.FormatToWriter(outfh, config.LineWidth)
}
config.LineWidth = lineWidth
}
},
}
func init() {
RootCmd.AddCommand(headGenomeCmd)
headGenomeCmd.Flags().IntP("mini-common-words", "m", 1, "minimal shared prefix words")
}