X-Git-Url: http://woldlab.caltech.edu/gitweb/?p=pysam.git;a=blobdiff_plain;f=samtools%2Fbam_color.c;fp=samtools%2Fbam_color.c;h=0000000000000000000000000000000000000000;hp=ce637f708db56de777e86f2f0ad50478fb1a6657;hb=d02fe5283ed7a93a2f76a5d6dc6e37b40c11b9b1;hpb=d828f9c9aa78e3d1687265b52de841f3f3852089 diff --git a/samtools/bam_color.c b/samtools/bam_color.c deleted file mode 100644 index ce637f7..0000000 --- a/samtools/bam_color.c +++ /dev/null @@ -1,127 +0,0 @@ -#include -#include "bam.h" - -/*! - @abstract Get the color encoding the previous and current base - @param b pointer to an alignment - @param i The i-th position, 0-based - @return color - - @discussion Returns 0 no color information is found. - */ -char bam_aux_getCSi(bam1_t *b, int i) -{ - uint8_t *c = bam_aux_get(b, "CS"); - char *cs = NULL; - - // return the base if the tag was not found - if(0 == c) return 0; - - cs = bam_aux2Z(c); - // adjust for strandedness and leading adaptor - if(bam1_strand(b)) i = strlen(cs) - 1 - i; - else i++; - return cs[i]; -} - -/*! - @abstract Get the color quality of the color encoding the previous and current base - @param b pointer to an alignment - @param i The i-th position, 0-based - @return color quality - - @discussion Returns 0 no color information is found. - */ -char bam_aux_getCQi(bam1_t *b, int i) -{ - uint8_t *c = bam_aux_get(b, "CQ"); - char *cq = NULL; - - // return the base if the tag was not found - if(0 == c) return 0; - - cq = bam_aux2Z(c); - // adjust for strandedness - if(bam1_strand(b)) i = strlen(cq) - 1 - i; - return cq[i]; -} - -char bam_aux_nt2int(char a) -{ - switch(toupper(a)) { - case 'A': - return 0; - break; - case 'C': - return 1; - break; - case 'G': - return 2; - break; - case 'T': - return 3; - break; - default: - return 4; - break; - } -} - -char bam_aux_ntnt2cs(char a, char b) -{ - a = bam_aux_nt2int(a); - b = bam_aux_nt2int(b); - if(4 == a || 4 == b) return '4'; - return "0123"[(int)(a ^ b)]; -} - -/*! - @abstract Get the color error profile at the give position - @param b pointer to an alignment - @return the original color if the color was an error, '-' (dash) otherwise - - @discussion Returns 0 no color information is found. - */ -char bam_aux_getCEi(bam1_t *b, int i) -{ - int cs_i; - uint8_t *c = bam_aux_get(b, "CS"); - char *cs = NULL; - char prev_b, cur_b; - char cur_color, cor_color; - - // return the base if the tag was not found - if(0 == c) return 0; - - cs = bam_aux2Z(c); - - // adjust for strandedness and leading adaptor - if(bam1_strand(b)) { //reverse strand - cs_i = strlen(cs) - 1 - i; - // get current color - cur_color = cs[cs_i]; - // get previous base. Note: must rc adaptor - prev_b = (cs_i == 1) ? "TGCAN"[(int)bam_aux_nt2int(cs[0])] : bam_nt16_rev_table[bam1_seqi(bam1_seq(b), i+1)]; - // get current base - cur_b = bam_nt16_rev_table[bam1_seqi(bam1_seq(b), i)]; - } - else { - cs_i=i+1; - // get current color - cur_color = cs[cs_i]; - // get previous base - prev_b = (0 == i) ? cs[0] : bam_nt16_rev_table[bam1_seqi(bam1_seq(b), i-1)]; - // get current base - cur_b = bam_nt16_rev_table[bam1_seqi(bam1_seq(b), i)]; - } - - // corrected color - cor_color = bam_aux_ntnt2cs(prev_b, cur_b); - - if(cur_color == cor_color) { - return '-'; - } - else { - return cur_color; - } -}