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fastq_quality_converter.c

/*
    FASTX-toolkit - FASTA/FASTQ preprocessing tools.
    Copyright (C) 2009  A. Gordon (gordon@cshl.edu)

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero 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 Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <errno.h>
#include <err.h>

#include <config.h>

#include "fastx.h"
#include "fastx_args.h"

const char* usage=
"usage: fastq_quality_converter [-h] [-a] [-n] [-z] [-i INFILE] [-f OUTFILE]\n" \
"Part of " PACKAGE_STRING " by A. Gordon (gordon@cshl.edu)\n" \
"\n" \
"   [-h]         = This helpful help screen.\n" \
"   [-a]         = Output ASCII quality scores (default).\n" \
"   [-n]         = Output numeric quality scores.\n" \
"   [-z]         = Compress output with GZIP.\n" \
"   [-i INFILE]  = FASTA/Q input file. default is STDIN.\n" \
"   [-o OUTFILE] = FASTA output file. default is STDOUT.\n" \
"\n";

FASTX fastx;
int flag_output_ascii = 1;

int parse_program_args(int __attribute__((unused)) optind, int optc, char __attribute__((unused)) *optarg)
{
      switch(optc) {
      case 'a': //this is the default, nothing to change
            break;
      
      case 'n':
            flag_output_ascii = 0 ;
            break;
      default:
            errx(1, __FILE__ ":%d: Unknown argument (%c)", __LINE__, optc ) ;
      }
      return 1;
}


int main(int argc, char* argv[])
{
      fastx_parse_cmdline(argc, argv, "an", parse_program_args);

      fastx_init_reader(&fastx, get_input_filename(), 
            FASTQ_ONLY, ALLOW_N, REQUIRE_UPPERCASE,
            get_fastq_ascii_quality_offset() );

      fastx_init_writer(&fastx, get_output_filename(), 
            flag_output_ascii ? OUTPUT_FASTQ_ASCII_QUAL : OUTPUT_FASTQ_NUMERIC_QUAL,
            compress_output_flag());

      while ( fastx_read_next_record(&fastx) ) {
            fastx_write_record(&fastx);
      }

      //Print verbose report
      if ( verbose_flag() ) {
            fprintf(get_report_file(), "Input: %zu reads.\n", num_input_reads(&fastx) ) ;
            fprintf(get_report_file(), "Output: %zu reads.\n", num_output_reads(&fastx) ) ;
      }
      return 0;
}

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