1 | // =============================================================== // |
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2 | // // |
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3 | // File : arb_primer.cxx // |
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4 | // Purpose : // |
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5 | // // |
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6 | // Institute of Microbiology (Technical University Munich) // |
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7 | // http://www.arb-home.de/ // |
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8 | // // |
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9 | // =============================================================== // |
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10 | |
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11 | #include <arbdbt.h> |
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12 | #include <arb_strarray.h> |
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13 | |
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14 | #define ADD_LEN 10 |
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15 | #define PRM_BUFFERSIZE 256 |
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16 | |
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17 | |
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18 | struct arb_prm_struct : virtual Noncopyable { |
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19 | ConstStrArray alignment_names; |
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20 | int al_len; |
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21 | int max_name; |
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22 | GBDATA *gb_main; |
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23 | char buffer[PRM_BUFFERSIZE]; |
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24 | const char *source; |
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25 | int prmanz; |
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26 | int prmlen; |
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27 | int prmsmin; |
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28 | char **data; |
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29 | int sp_count; |
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30 | int key_cnt; |
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31 | int one_key_cnt; |
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32 | int reduce; |
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33 | FILE *out; |
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34 | char *outname; |
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35 | |
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36 | arb_prm_struct() |
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37 | : al_len(0), |
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38 | max_name(0), |
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39 | gb_main(NULp), |
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40 | source(NULp), |
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41 | prmanz(0), |
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42 | prmlen(0), |
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43 | prmsmin(0), |
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44 | data(NULp), |
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45 | sp_count(0), |
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46 | key_cnt(0), |
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47 | one_key_cnt(0), |
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48 | reduce(0), |
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49 | out(NULp), |
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50 | outname(NULp) |
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51 | { |
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52 | memset(buffer, 0, sizeof(buffer)); |
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53 | } |
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54 | ~arb_prm_struct() { |
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55 | if (data) { |
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56 | for (int i = 0; i<sp_count; ++i) free(data[i]); |
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57 | free(data); |
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58 | } |
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59 | free(outname); |
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60 | } |
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61 | |
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62 | }; |
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63 | static arb_prm_struct aprm; |
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64 | |
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65 | inline int getNumFromStdin() { |
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66 | // returns entered number (or 0) |
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67 | int i = 0; |
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68 | if (fgets(aprm.buffer, PRM_BUFFERSIZE, stdin)) { |
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69 | i = atoi(aprm.buffer); |
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70 | } |
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71 | return i; |
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72 | } |
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73 | |
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74 | static GB_ERROR arb_prm_menu() { |
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75 | printf(" Please select an Alignment:\n"); |
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76 | int i; |
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77 | for (i=1; aprm.alignment_names[i-1]; ++i) { |
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78 | printf("%i: %s\n", i, aprm.alignment_names[i-1]); |
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79 | } |
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80 | aprm.max_name = i; |
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81 | |
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82 | GB_ERROR error = NULp; |
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83 | i = getNumFromStdin(); |
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84 | if ((i<1) || (i>=aprm.max_name)) { |
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85 | error = GBS_global_string("selection %i out of range", i); |
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86 | } |
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87 | else { |
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88 | aprm.source = aprm.alignment_names[i-1]; |
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89 | |
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90 | printf("This module will search for primers for all positions.\n" |
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91 | " The best result is one primer for all (marked) taxa , the worst case\n" |
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92 | " are n primers for n taxa.\n" |
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93 | " Please specify the maximum number of primers:\n" |
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94 | ); |
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95 | aprm.prmanz = getNumFromStdin(); |
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96 | |
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97 | printf("Select minimum length of a primer, the maximum will be (minimum + %i)\n", ADD_LEN); |
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98 | i = getNumFromStdin(); |
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99 | if ((i<4) || (i>30)) { |
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100 | error = GBS_global_string("selection %i out of range", i); |
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101 | } |
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102 | else { |
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103 | aprm.prmlen = i; |
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104 | |
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105 | printf("There may be short sequences or/and deletes in full sequences\n" |
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106 | " So a primer normally does not match all sequences\n" |
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107 | " Specify minimum percentage of species (0-100 %%):\n"); |
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108 | i = getNumFromStdin(); |
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109 | if ((i<1) || (i>100)) { |
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110 | error = GBS_global_string("selection %i out of range", i); |
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111 | } |
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112 | else { |
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113 | aprm.prmsmin = i; |
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114 | |
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115 | printf("Write output to file (enter \"\" to write to screen)\n"); |
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116 | if (fgets(aprm.buffer, PRM_BUFFERSIZE, stdin)) { |
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117 | char *lf = strchr(aprm.buffer, '\n'); |
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118 | if (lf) lf[0] = 0; // remove linefeed from filename |
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119 | aprm.outname = ARB_strdup(aprm.buffer); |
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120 | } |
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121 | else { |
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122 | aprm.outname = ARB_strdup(""); |
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123 | } |
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124 | } |
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125 | } |
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126 | } |
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127 | return error; |
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128 | } |
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129 | |
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130 | static GB_ERROR arb_prm_read(int /* prmanz */) { |
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131 | GBDATA *gb_presets = GBT_get_presets(aprm.gb_main); |
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132 | { |
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133 | GBDATA *gb_source = GB_find_string(gb_presets, "alignment_name", aprm.source, GB_IGNORE_CASE, SEARCH_GRANDCHILD); |
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134 | GBDATA *gb_len = GB_brother(gb_source, "alignment_len"); |
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135 | aprm.al_len = GB_read_int(gb_len); |
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136 | } |
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137 | |
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138 | int sp_count = GBT_count_marked_species(aprm.gb_main); |
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139 | ARB_calloc(aprm.data, sp_count); |
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140 | |
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141 | sp_count = 0; |
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142 | for (GBDATA *gb_species = GBT_first_marked_species(aprm.gb_main); |
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143 | gb_species; |
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144 | gb_species = GBT_next_marked_species(gb_species)) |
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145 | { |
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146 | GBDATA *gb_source = GB_entry(gb_species, aprm.source); |
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147 | if (gb_source) { |
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148 | GBDATA *gb_source_data = GB_entry(gb_source, "data"); |
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149 | if (gb_source_data) { |
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150 | const char *hdata = GB_read_char_pntr(gb_source_data); |
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151 | |
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152 | if (!hdata) { |
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153 | GB_print_error(); |
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154 | } |
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155 | else { |
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156 | char *data = ARB_calloc<char>(aprm.al_len+1); |
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157 | aprm.data[sp_count ++] = data; |
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158 | |
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159 | if (sp_count % 50 == 0) printf("Reading taxa %i\n", sp_count); |
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160 | |
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161 | int size = GB_read_string_count(gb_source_data); |
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162 | int i; |
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163 | for (i=0; i<size; i++) { // LOOP_VECTORIZED[!<720] |
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164 | char c = hdata[i]; |
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165 | if ((c>='a') && (c<='z')) { |
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166 | data[i] = c-'a'+'A'; |
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167 | } |
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168 | else { |
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169 | data[i] = c; |
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170 | } |
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171 | } |
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172 | for (; i<aprm.al_len; i++) { |
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173 | data[i] = '.'; |
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174 | } |
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175 | data[i] = 0; |
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176 | } |
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177 | } |
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178 | } |
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179 | } |
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180 | printf("%i taxa read\n", sp_count); |
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181 | aprm.sp_count = sp_count; |
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182 | if (sp_count == 0) { |
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183 | return "No marked taxa found"; |
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184 | } |
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185 | return NULp; |
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186 | } |
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187 | |
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188 | static void arb_count_keys(const char * /* key */, long val, void *) { |
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189 | if (val >1) { |
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190 | aprm.key_cnt++; |
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191 | } |
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192 | else { |
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193 | aprm.one_key_cnt++; |
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194 | } |
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195 | } |
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196 | |
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197 | static void arb_print_primer(const char *key, long val, void *) { |
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198 | if (val > 1) { |
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199 | int gc = 0; |
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200 | const char *p; |
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201 | for (p = key; *p; p++) { |
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202 | if (*p == 'G' || *p == 'C') gc++; |
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203 | } |
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204 | fprintf(aprm.out, " %s matching %4li taxa GC = %3i%%\n", |
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205 | key, val, 100*gc/(int)strlen(key)); |
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206 | } |
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207 | } |
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208 | |
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209 | #define is_base(c) (((c>='a') && (c<='z')) || ((c>='A')&&(c<='Z'))) |
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210 | |
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211 | static int primer_print(char *dest, char * source, int size) { |
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212 | char c; |
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213 | c = *(source++); |
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214 | if (!is_base(c)) return 1; |
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215 | while (size) { |
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216 | while (!is_base(c)) { |
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217 | c = *(source++); |
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218 | if (!c) return 1; |
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219 | } |
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220 | if (c == 'N' || c == 'n') return 1; |
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221 | *(dest++) = c; |
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222 | size--; |
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223 | if (!c) return 1; |
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224 | c = 0; |
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225 | } |
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226 | *dest = 0; |
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227 | return 0; |
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228 | } |
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229 | |
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230 | |
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231 | static long arb_reduce_primer_len(const char *key, long val, void *cl_hash) { |
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232 | GB_HASH* hash = (GB_HASH*)cl_hash; |
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233 | |
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234 | const int BUFLEN = 256; |
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235 | char buffer[BUFLEN]; |
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236 | |
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237 | int size = strlen(key)-aprm.reduce; |
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238 | arb_assert(aprm.reduce>=0); |
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239 | arb_assert(size<BUFLEN); |
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240 | |
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241 | memcpy(buffer, key, size); |
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242 | buffer[size] = 0; |
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243 | |
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244 | val += GBS_read_hash(hash, buffer); |
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245 | GBS_write_hash(hash, buffer, val); |
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246 | |
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247 | return val; |
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248 | } |
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249 | |
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250 | static void arb_prm_primer(int /* prmanz */) { |
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251 | GB_HASH *mhash; |
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252 | int sp; |
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253 | char *buffer; |
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254 | int pos; |
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255 | int prmlen; |
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256 | int pspecies; |
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257 | int cutoff_cnt; |
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258 | int *best_primer_cnt; |
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259 | int *best_primer_new; |
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260 | int *best_primer_swap; |
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261 | |
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262 | prmlen = aprm.prmlen + ADD_LEN + 1; |
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263 | |
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264 | ARB_calloc(buffer, prmlen+1); |
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265 | ARB_calloc(best_primer_cnt, prmlen+1); |
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266 | ARB_calloc(best_primer_new, prmlen+1); |
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267 | |
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268 | for (pos = 0; pos < aprm.al_len; pos++) { |
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269 | prmlen = aprm.prmlen + ADD_LEN; |
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270 | mhash = GBS_create_hash(1024, GB_MIND_CASE); |
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271 | pspecies = 0; |
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272 | if (pos % 50 == 0) printf("Pos. %i (%i)\n", pos, aprm.al_len); |
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273 | cutoff_cnt = aprm.prmanz+1; |
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274 | for (sp = 0; sp < aprm.sp_count; sp++) { // build initial hash table |
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275 | if (!primer_print(buffer, aprm.data[sp] + pos, prmlen)) { |
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276 | GBS_incr_hash(mhash, buffer); |
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277 | pspecies++; |
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278 | } |
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279 | } |
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280 | if (pspecies*100 >= aprm.prmsmin * aprm.sp_count) { // reduce primer length |
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281 | for (; prmlen >= aprm.prmlen; prmlen-=aprm.reduce) { |
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282 | GB_HASH *hash = GBS_create_hash(aprm.prmanz, GB_MIND_CASE); |
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283 | |
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284 | aprm.key_cnt = 0; |
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285 | aprm.one_key_cnt = 0; |
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286 | GBS_hash_do_const_loop(mhash, arb_count_keys, NULp); |
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287 | if ((aprm.key_cnt + aprm.one_key_cnt < cutoff_cnt) && |
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288 | // (aprm.key_cnt > aprm.one_key_cnt) && |
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289 | (aprm.key_cnt<best_primer_cnt[prmlen+1])) { |
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290 | fprintf(aprm.out, "%3i primer found len %3i(of %4i taxa) for position %i\n", aprm.key_cnt, prmlen, pspecies, pos); |
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291 | GBS_hash_do_const_loop(mhash, arb_print_primer, NULp); |
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292 | fprintf(aprm.out, "\n\n"); |
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293 | cutoff_cnt = aprm.key_cnt; |
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294 | } |
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295 | best_primer_new[prmlen] = aprm.key_cnt; |
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296 | aprm.reduce = 1; |
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297 | while (aprm.key_cnt > aprm.prmanz*4) { |
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298 | aprm.key_cnt/=4; |
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299 | aprm.reduce++; |
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300 | } |
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301 | GBS_hash_do_loop(mhash, arb_reduce_primer_len, hash); |
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302 | GBS_free_hash(mhash); |
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303 | mhash = hash; |
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304 | } |
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305 | } |
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306 | else { |
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307 | for (; prmlen>0; prmlen--) best_primer_new[prmlen] = aprm.prmanz+1; // LOOP_VECTORIZED // tested down to gcc 5.5.0 (may fail on older gcc versions) |
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308 | } |
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309 | GBS_free_hash(mhash); |
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310 | best_primer_swap = best_primer_new; |
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311 | best_primer_new = best_primer_cnt; |
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312 | best_primer_cnt = best_primer_swap; |
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313 | mhash = NULp; |
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314 | } |
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315 | |
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316 | free(best_primer_new); |
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317 | free(best_primer_cnt); |
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318 | free(buffer); |
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319 | } |
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320 | |
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321 | int ARB_main(int argc, char *argv[]) { |
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322 | const char *path = NULp; |
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323 | |
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324 | while (argc >= 2) { |
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325 | if (strcmp(argv[1], "--help") == 0) { |
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326 | fprintf(stderr, |
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327 | "Usage: arb_primer [dbname]\n" |
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328 | "Searches sequencing primers\n"); |
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329 | return EXIT_FAILURE; |
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330 | } |
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331 | path = argv[1]; |
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332 | argv++; argc--; |
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333 | } |
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334 | |
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335 | if (!path) path = ":"; |
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336 | |
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337 | GB_ERROR error = NULp; |
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338 | GB_shell shell; |
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339 | aprm.gb_main = GB_open(path, "r"); |
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340 | if (!aprm.gb_main) { |
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341 | error = GBS_global_string("Can't open db '%s' (Reason: %s)", path, GB_await_error()); |
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342 | } |
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343 | else { |
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344 | GB_begin_transaction(aprm.gb_main); |
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345 | GBT_get_alignment_names(aprm.alignment_names, aprm.gb_main); |
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346 | GB_commit_transaction(aprm.gb_main); |
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347 | |
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348 | error = arb_prm_menu(); |
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349 | |
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350 | if (!error) { |
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351 | GB_begin_transaction(aprm.gb_main); |
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352 | error = arb_prm_read(aprm.prmanz); |
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353 | if (!error) { |
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354 | GB_commit_transaction(aprm.gb_main); |
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355 | if (strlen(aprm.outname)) { |
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356 | aprm.out = fopen(aprm.outname, "w"); |
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357 | if (!aprm.out) { |
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358 | error = GB_IO_error("writing", aprm.outname); |
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359 | } |
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360 | else { |
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361 | arb_prm_primer(aprm.prmanz); |
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362 | fclose(aprm.out); |
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363 | } |
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364 | } |
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365 | else { |
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366 | aprm.out = stdout; |
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367 | arb_prm_primer(aprm.prmanz); |
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368 | } |
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369 | } |
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370 | else { |
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371 | GB_abort_transaction(aprm.gb_main); |
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372 | } |
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373 | } |
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374 | GB_close(aprm.gb_main); |
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375 | } |
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376 | |
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377 | if (error) { |
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378 | fprintf(stderr, "Error in arb_primer: %s\n", error); |
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379 | return EXIT_FAILURE; |
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380 | } |
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381 | return EXIT_SUCCESS; |
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382 | } |
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