1 | #include <stdio.h> |
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2 | #include <string.h> |
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3 | #include <stdlib.h> |
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4 | #include <math.h> |
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5 | #include "clustalw.h" |
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6 | |
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7 | static void make_p_ptrs(sint *tptr, sint *pl, sint naseq, sint l); |
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8 | static void make_n_ptrs(sint *tptr, sint *pl, sint naseq, sint len); |
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9 | static void put_frag(sint fs, sint v1, sint v2, sint flen); |
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10 | static sint frag_rel_pos(sint a1, sint b1, sint a2, sint b2); |
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11 | static void des_quick_sort(sint *array1, sint *array2, sint array_size); |
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12 | static void pair_align(sint seq_no, sint l1, sint l2); |
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13 | |
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14 | |
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15 | /* |
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16 | * Prototypes |
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17 | */ |
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18 | |
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19 | /* |
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20 | * Global variables |
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21 | */ |
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22 | extern sint *seqlen_array; |
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23 | extern char **seq_array; |
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24 | extern sint dna_ktup, dna_window, dna_wind_gap, dna_signif; /* params for DNA */ |
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25 | extern sint prot_ktup,prot_window,prot_wind_gap,prot_signif; /* params for prots */ |
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26 | extern sint nseqs; |
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27 | extern Boolean dnaflag; |
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28 | extern double **tmat; |
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29 | extern sint max_aa; |
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30 | extern sint max_aln_length; |
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31 | |
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32 | static sint next; |
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33 | static sint curr_frag,maxsf,vatend; |
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34 | static sint **accum; |
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35 | static sint *diag_index; |
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36 | static char *slopes; |
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37 | |
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38 | sint ktup,window,wind_gap,signif; /* Pairwise aln. params */ |
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39 | sint *displ; |
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40 | sint *zza, *zzb, *zzc, *zzd; |
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41 | |
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42 | extern Boolean percent; |
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43 | |
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44 | |
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45 | static void make_p_ptrs(sint *tptr,sint *pl,sint naseq,sint l) |
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46 | { |
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47 | static sint a[10]; |
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48 | sint i,j,limit,code,flag; |
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49 | char residue; |
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50 | |
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51 | for (i=1;i<=ktup;i++) |
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52 | a[i] = (sint) pow((double)(max_aa+1),(double)(i-1)); |
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53 | |
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54 | limit = (sint) pow((double)(max_aa+1),(double)ktup); |
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55 | for(i=1;i<=limit;++i) |
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56 | pl[i]=0; |
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57 | for(i=1;i<=l;++i) |
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58 | tptr[i]=0; |
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59 | |
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60 | for(i=1;i<=(l-ktup+1);++i) { |
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61 | code=0; |
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62 | flag=FALSE; |
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63 | for(j=1;j<=ktup;++j) { |
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64 | residue = seq_array[naseq][i+j-1]; |
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65 | if((residue<0) || (residue > max_aa)){ |
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66 | flag=TRUE; |
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67 | break; |
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68 | } |
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69 | code += ((residue) * a[j]); |
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70 | } |
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71 | if(flag) |
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72 | continue; |
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73 | ++code; |
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74 | if(pl[code]!=0) |
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75 | tptr[i]=pl[code]; |
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76 | pl[code]=i; |
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77 | } |
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78 | } |
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79 | |
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80 | |
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81 | static void make_n_ptrs(sint *tptr,sint *pl,sint naseq,sint len) |
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82 | { |
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83 | static sint pot[]={ 0, 1, 4, 16, 64, 256, 1024, 4096 }; |
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84 | sint i,j,limit,code,flag; |
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85 | char residue; |
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86 | |
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87 | limit = (sint) pow((double)4,(double)ktup); |
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88 | |
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89 | for(i=1;i<=limit;++i) |
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90 | pl[i]=0; |
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91 | for(i=1;i<=len;++i) |
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92 | tptr[i]=0; |
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93 | |
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94 | for(i=1;i<=len-ktup+1;++i) { |
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95 | code=0; |
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96 | flag=FALSE; |
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97 | for(j=1;j<=ktup;++j) { |
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98 | residue = seq_array[naseq][i+j-1]; |
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99 | if((residue<0) || (residue>4)){ |
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100 | flag=TRUE; |
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101 | break; |
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102 | } |
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103 | code += ((residue) * pot[j]); /* DES */ |
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104 | } |
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105 | if(flag) |
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106 | continue; |
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107 | ++code; |
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108 | if(pl[code]!=0) |
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109 | tptr[i]=pl[code]; |
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110 | pl[code]=i; |
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111 | } |
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112 | } |
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113 | |
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114 | |
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115 | static void put_frag(sint fs,sint v1,sint v2,sint flen) |
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116 | { |
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117 | sint end; |
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118 | accum[0][curr_frag]=fs; |
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119 | accum[1][curr_frag]=v1; |
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120 | accum[2][curr_frag]=v2; |
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121 | accum[3][curr_frag]=flen; |
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122 | |
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123 | if(!maxsf) { |
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124 | maxsf=1; |
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125 | accum[4][curr_frag]=0; |
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126 | return; |
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127 | } |
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128 | |
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129 | if(fs >= accum[0][maxsf]) { |
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130 | accum[4][curr_frag]=maxsf; |
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131 | maxsf=curr_frag; |
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132 | return; |
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133 | } |
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134 | else { |
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135 | next=maxsf; |
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136 | while(TRUE) { |
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137 | end=next; |
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138 | next=accum[4][next]; |
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139 | if(fs>=accum[0][next]) |
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140 | break; |
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141 | } |
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142 | accum[4][curr_frag]=next; |
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143 | accum[4][end]=curr_frag; |
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144 | } |
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145 | } |
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146 | |
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147 | |
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148 | static sint frag_rel_pos(sint a1,sint b1,sint a2,sint b2) |
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149 | { |
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150 | sint ret; |
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151 | |
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152 | ret=FALSE; |
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153 | if(a1-b1==a2-b2) { |
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154 | if(a2<a1) |
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155 | ret=TRUE; |
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156 | } |
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157 | else { |
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158 | if(a2+ktup-1<a1 && b2+ktup-1<b1) |
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159 | ret=TRUE; |
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160 | } |
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161 | return ret; |
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162 | } |
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163 | |
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164 | |
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165 | static void des_quick_sort(sint *array1, sint *array2, sint array_size) |
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166 | /* */ |
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167 | /* Quicksort routine, adapted from chapter 4, page 115 of software tools */ |
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168 | /* by Kernighan and Plauger, (1986) */ |
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169 | /* Sort the elements of array1 and sort the */ |
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170 | /* elements of array2 accordingly */ |
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171 | /* */ |
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172 | { |
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173 | sint temp1, temp2; |
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174 | sint p, pivlin; |
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175 | sint i, j; |
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176 | sint lst[50], ust[50]; /* the maximum no. of elements must be*/ |
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177 | /* < log(base2) of 50 */ |
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178 | |
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179 | lst[1] = 1; |
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180 | ust[1] = array_size-1; |
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181 | p = 1; |
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182 | |
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183 | while(p > 0) { |
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184 | if(lst[p] >= ust[p]) |
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185 | p--; |
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186 | else { |
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187 | i = lst[p] - 1; |
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188 | j = ust[p]; |
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189 | pivlin = array1[j]; |
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190 | while(i < j) { |
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191 | for(i=i+1; array1[i] < pivlin; i++) |
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192 | ; |
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193 | for(j=j-1; j > i; j--) |
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194 | if(array1[j] <= pivlin) break; |
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195 | if(i < j) { |
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196 | temp1 = array1[i]; |
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197 | array1[i] = array1[j]; |
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198 | array1[j] = temp1; |
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199 | |
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200 | temp2 = array2[i]; |
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201 | array2[i] = array2[j]; |
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202 | array2[j] = temp2; |
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203 | } |
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204 | } |
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205 | |
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206 | j = ust[p]; |
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207 | |
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208 | temp1 = array1[i]; |
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209 | array1[i] = array1[j]; |
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210 | array1[j] = temp1; |
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211 | |
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212 | temp2 = array2[i]; |
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213 | array2[i] = array2[j]; |
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214 | array2[j] = temp2; |
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215 | |
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216 | if(i-lst[p] < ust[p] - i) { |
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217 | lst[p+1] = lst[p]; |
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218 | ust[p+1] = i - 1; |
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219 | lst[p] = i + 1; |
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220 | } |
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221 | else { |
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222 | lst[p+1] = i + 1; |
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223 | ust[p+1] = ust[p]; |
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224 | ust[p] = i - 1; |
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225 | } |
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226 | p = p + 1; |
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227 | } |
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228 | } |
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229 | return; |
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230 | |
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231 | } |
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232 | |
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233 | |
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234 | |
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235 | |
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236 | |
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237 | static void pair_align(sint seq_no,sint l1,sint l2) |
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238 | { |
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239 | sint pot[8],i,j,l,m,flag,limit,pos,tl1,vn1,vn2,flen,osptr,fs; |
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240 | sint tv1,tv2,encrypt,subt1,subt2,rmndr; |
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241 | char residue; |
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242 | |
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243 | if(dnaflag) { |
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244 | for(i=1;i<=ktup;++i) |
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245 | pot[i] = (sint) pow((double)4,(double)(i-1)); |
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246 | limit = (sint) pow((double)4,(double)ktup); |
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247 | } |
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248 | else { |
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249 | for (i=1;i<=ktup;i++) |
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250 | pot[i] = (sint) pow((double)(max_aa+1),(double)(i-1)); |
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251 | limit = (sint) pow((double)(max_aa+1),(double)ktup); |
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252 | } |
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253 | |
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254 | tl1 = (l1+l2)-1; |
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255 | |
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256 | for(i=1;i<=tl1;++i) { |
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257 | slopes[i]=displ[i]=0; |
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258 | diag_index[i] = i; |
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259 | } |
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260 | |
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261 | |
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262 | /* increment diagonal score for each k_tuple match */ |
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263 | |
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264 | for(i=1;i<=limit;++i) { |
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265 | vn1=zzc[i]; |
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266 | while(TRUE) { |
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267 | if(!vn1) break; |
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268 | vn2=zzd[i]; |
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269 | while(vn2 != 0) { |
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270 | osptr=vn1-vn2+l2; |
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271 | ++displ[osptr]; |
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272 | vn2=zzb[vn2]; |
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273 | } |
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274 | vn1=zza[vn1]; |
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275 | } |
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276 | } |
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277 | |
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278 | /* choose the top SIGNIF diagonals */ |
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279 | |
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280 | des_quick_sort(displ, diag_index, tl1); |
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281 | |
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282 | j = tl1 - signif + 1; |
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283 | if(j < 1) j = 1; |
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284 | |
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285 | /* flag all diagonals within WINDOW of a top diagonal */ |
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286 | |
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287 | for(i=tl1; i>=j; i--) |
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288 | if(displ[i] > 0) { |
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289 | pos = diag_index[i]; |
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290 | l = (1 >pos-window) ? 1 : pos-window; |
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291 | m = (tl1<pos+window) ? tl1 : pos+window; |
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292 | for(; l <= m; l++) |
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293 | slopes[l] = 1; |
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294 | } |
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295 | |
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296 | for(i=1; i<=tl1; i++) displ[i] = 0; |
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297 | |
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298 | |
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299 | curr_frag=maxsf=0; |
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300 | |
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301 | for(i=1;i<=(l1-ktup+1);++i) { |
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302 | encrypt=flag=0; |
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303 | for(j=1;j<=ktup;++j) { |
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304 | residue = seq_array[seq_no][i+j-1]; |
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305 | if((residue<0) || (residue>max_aa)) { |
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306 | flag=TRUE; |
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307 | break; |
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308 | } |
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309 | encrypt += ((residue)*pot[j]); |
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310 | } |
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311 | if(flag) continue; |
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312 | ++encrypt; |
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313 | |
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314 | vn2=zzd[encrypt]; |
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315 | |
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316 | flag=FALSE; |
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317 | while(TRUE) { |
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318 | if(!vn2) { |
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319 | flag=TRUE; |
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320 | break; |
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321 | } |
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322 | osptr=i-vn2+l2; |
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323 | if(slopes[osptr]!=1) { |
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324 | vn2=zzb[vn2]; |
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325 | continue; |
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326 | } |
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327 | flen=0; |
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328 | fs=ktup; |
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329 | next=maxsf; |
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330 | |
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331 | /* |
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332 | * A-loop |
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333 | */ |
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334 | |
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335 | while(TRUE) { |
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336 | if(!next) { |
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337 | ++curr_frag; |
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338 | if(curr_frag>=2*max_aln_length) { |
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339 | info("(Partial alignment)"); |
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340 | vatend=1; |
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341 | return; |
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342 | } |
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343 | displ[osptr]=curr_frag; |
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344 | put_frag(fs,i,vn2,flen); |
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345 | } |
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346 | else { |
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347 | tv1=accum[1][next]; |
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348 | tv2=accum[2][next]; |
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349 | if(frag_rel_pos(i,vn2,tv1,tv2)) { |
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350 | if(i-vn2==accum[1][next]-accum[2][next]) { |
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351 | if(i>accum[1][next]+(ktup-1)) |
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352 | fs=accum[0][next]+ktup; |
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353 | else { |
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354 | rmndr=i-accum[1][next]; |
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355 | fs=accum[0][next]+rmndr; |
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356 | } |
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357 | flen=next; |
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358 | next=0; |
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359 | continue; |
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360 | } |
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361 | else { |
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362 | if(displ[osptr]==0) |
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363 | subt1=ktup; |
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364 | else { |
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365 | if(i>accum[1][displ[osptr]]+(ktup-1)) |
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366 | subt1=accum[0][displ[osptr]]+ktup; |
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367 | else { |
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368 | rmndr=i-accum[1][displ[osptr]]; |
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369 | subt1=accum[0][displ[osptr]]+rmndr; |
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370 | } |
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371 | } |
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372 | subt2=accum[0][next]-wind_gap+ktup; |
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373 | if(subt2>subt1) { |
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374 | flen=next; |
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375 | fs=subt2; |
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376 | } |
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377 | else { |
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378 | flen=displ[osptr]; |
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379 | fs=subt1; |
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380 | } |
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381 | next=0; |
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382 | continue; |
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383 | } |
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384 | } |
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385 | else { |
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386 | next=accum[4][next]; |
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387 | continue; |
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388 | } |
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389 | } |
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390 | break; |
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391 | } |
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392 | /* |
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393 | * End of Aloop |
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394 | */ |
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395 | |
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396 | vn2=zzb[vn2]; |
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397 | } |
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398 | } |
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399 | vatend=0; |
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400 | } |
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401 | |
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402 | void show_pair(sint istart, sint iend, sint jstart, sint jend) |
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403 | { |
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404 | sint i,j,dsr; |
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405 | double calc_score; |
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406 | |
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407 | accum = (sint **)ckalloc( 5*sizeof (sint *) ); |
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408 | for (i=0;i<5;i++) |
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409 | accum[i] = (sint *) ckalloc((2*max_aln_length+1) * sizeof (sint) ); |
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410 | |
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411 | displ = (sint *) ckalloc( (2*max_aln_length +1) * sizeof (sint) ); |
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412 | slopes = (char *)ckalloc( (2*max_aln_length +1) * sizeof (char)); |
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413 | diag_index = (sint *) ckalloc( (2*max_aln_length +1) * sizeof (sint) ); |
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414 | |
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415 | zza = (sint *)ckalloc( (max_aln_length+1) * sizeof (sint) ); |
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416 | zzb = (sint *)ckalloc( (max_aln_length+1) * sizeof (sint) ); |
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417 | |
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418 | zzc = (sint *)ckalloc( (max_aln_length+1) * sizeof (sint) ); |
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419 | zzd = (sint *)ckalloc( (max_aln_length+1) * sizeof (sint) ); |
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420 | |
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421 | if(dnaflag) { |
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422 | ktup = dna_ktup; |
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423 | window = dna_window; |
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424 | signif = dna_signif; |
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425 | wind_gap = dna_wind_gap; |
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426 | } |
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427 | else { |
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428 | ktup = prot_ktup; |
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429 | window = prot_window; |
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430 | signif = prot_signif; |
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431 | wind_gap = prot_wind_gap; |
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432 | } |
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433 | |
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434 | fprintf(stdout,"\n\n"); |
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435 | |
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436 | for(i=istart+1;i<=iend;++i) { |
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437 | if(dnaflag) |
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438 | make_n_ptrs(zza,zzc,i,seqlen_array[i]); |
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439 | else |
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440 | make_p_ptrs(zza,zzc,i,seqlen_array[i]); |
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441 | for(j=jstart+2;j<=jend;++j) { |
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442 | if(dnaflag) |
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443 | make_n_ptrs(zzb,zzd,j,seqlen_array[j]); |
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444 | else |
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445 | make_p_ptrs(zzb,zzd,j,seqlen_array[j]); |
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446 | pair_align(i,seqlen_array[i],seqlen_array[j]); |
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447 | if(!maxsf) |
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448 | calc_score=0.0; |
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449 | else { |
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450 | calc_score=(double)accum[0][maxsf]; |
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451 | if(percent) { |
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452 | dsr=(seqlen_array[i]<seqlen_array[j]) ? |
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453 | seqlen_array[i] : seqlen_array[j]; |
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454 | calc_score = (calc_score/(double)dsr) * 100.0; |
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455 | } |
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456 | } |
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457 | /* |
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458 | tmat[i][j]=calc_score; |
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459 | tmat[j][i]=calc_score; |
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460 | */ |
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461 | |
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462 | tmat[i][j] = (100.0 - calc_score)/100.0; |
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463 | tmat[j][i] = (100.0 - calc_score)/100.0; |
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464 | if(calc_score>0.1) |
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465 | info("Sequences (%d:%d) Aligned. Score: %lg", |
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466 | (pint)i,(pint)j,calc_score); |
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467 | else |
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468 | info("Sequences (%d:%d) Not Aligned", |
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469 | (pint)i,(pint)j); |
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470 | } |
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471 | } |
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472 | |
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473 | for (i=0;i<5;i++) |
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474 | accum[i]=ckfree((void *)accum[i]); |
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475 | accum=ckfree((void *)accum); |
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476 | |
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477 | displ=ckfree((void *)displ); |
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478 | slopes=ckfree((void *)slopes); |
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479 | diag_index=ckfree((void *)diag_index); |
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480 | |
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481 | zza=ckfree((void *)zza); |
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482 | zzb=ckfree((void *)zzb); |
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483 | zzc=ckfree((void *)zzc); |
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484 | zzd=ckfree((void *)zzd); |
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485 | } |
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486 | |
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