1 | /**************************************** |
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2 | * Computer Algebra System SINGULAR * |
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3 | ****************************************/ |
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4 | /*************************************************************** |
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5 | * File: ssiLink.h |
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6 | * Purpose: declaration of sl_link routines for ssi |
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7 | * Version: $Id$ |
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8 | ***************************************************************/ |
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9 | #include <stdio.h> |
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10 | #include <fcntl.h> |
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11 | #include <errno.h> |
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12 | #include <unistd.h> |
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13 | #include <sys/types.h> |
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14 | #include <signal.h> |
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15 | #include <sys/types.h> /* for portability */ |
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16 | #include <sys/select.h> |
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17 | #include <sys/socket.h> |
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18 | #include <netinet/in.h> |
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19 | #include <ctype.h> /*for isdigit*/ |
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20 | #include <unistd.h> |
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21 | #include <netdb.h> |
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22 | |
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23 | |
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24 | #include "mod2.h" |
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25 | |
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26 | #include "tok.h" |
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27 | #include "ipid.h" |
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28 | #include <omalloc.h> |
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29 | #include <kernel/ring.h> |
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30 | #include <kernel/matpol.h> |
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31 | #include <kernel/ideals.h> |
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32 | #include <kernel/polys.h> |
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33 | #include <kernel/longrat.h> |
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34 | #include <kernel/ideals.h> |
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35 | #include "subexpr.h" |
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36 | #include "silink.h" |
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37 | #include "lists.h" |
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38 | #include "ssiLink.h" |
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39 | |
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40 | typedef struct |
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41 | { |
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42 | FILE *f_read; |
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43 | FILE *f_write; |
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44 | ring r; |
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45 | pid_t pid; /* only valid for fork/tcp mode*/ |
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46 | int fd_read,fd_write; /* only valid for fork/tcp mode*/ |
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47 | char level; |
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48 | } ssiInfo; |
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49 | |
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50 | // the helper functions: |
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51 | void ssiSetCurrRing(const ring r) |
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52 | { |
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53 | if (!rEqual(r,currRing,1)) |
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54 | { |
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55 | char name[20]; |
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56 | int nr=0; |
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57 | do |
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58 | { sprintf(name,"ssiRing%d",nr); nr++; } |
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59 | while(IDROOT->get(name, 0)!=NULL); |
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60 | idhdl h=enterid(omStrDup(name),0,RING_CMD,&IDROOT,FALSE); |
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61 | IDRING(h)=r; |
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62 | r->ref++; |
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63 | rSetHdl(h); |
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64 | } |
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65 | } |
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66 | // the implementation of the functions: |
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67 | void ssiWriteInt(ssiInfo *d,const int i) |
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68 | { |
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69 | fprintf(d->f_write,"%d ",i); |
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70 | //if (d->f_debug!=NULL) fprintf(d->f_debug,"int: %d ",i); |
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71 | } |
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72 | |
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73 | void ssiWriteString(ssiInfo *d,const char *s) |
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74 | { |
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75 | fprintf(d->f_write,"%d %s ",strlen(s),s); |
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76 | //if (d->f_debug!=NULL) fprintf(d->f_debug,"stringi: %d \"%s\" ",strlen(s),s); |
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77 | } |
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78 | |
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79 | |
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80 | void ssiWriteBigInt(const ssiInfo *d, const number n) |
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81 | { |
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82 | // syntax is as follows: |
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83 | // case 2 Q: 3 4 <int> |
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84 | // or 3 3 <mpz_t nominator> |
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85 | if(SR_HDL(n) & SR_INT) |
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86 | { |
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87 | fprintf(d->f_write,"4 %ld ",SR_TO_INT(n)); |
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88 | //if (d->f_debug!=NULL) fprintf(d->f_debug,"bigint: short \"%ld\" ",SR_TO_INT(n)); |
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89 | } |
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90 | else if (n->s==3) |
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91 | { |
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92 | gmp_fprintf(d->f_write,"3 %Zd ",n->z); |
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93 | //if (d->f_debug!=NULL) gmp_fprintf(d->f_debug,"bigint: gmp \"%Zd\" ",n->z); |
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94 | } |
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95 | else Werror("illiegal bigint"); |
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96 | } |
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97 | |
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98 | void ssiWriteNumber(const ssiInfo *d, const number n) |
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99 | { |
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100 | // syntax is as follows: |
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101 | // case 1 Z/p: 3 <int> |
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102 | // case 2 Q: 3 4 <int> |
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103 | // or 3 0 <mpz_t nominator> <mpz_t denominator> |
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104 | // or 3 1 dto. |
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105 | // or 3 3 <mpz_t nominator> |
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106 | if(rField_is_Zp(d->r)) |
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107 | { |
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108 | fprintf(d->f_write,"%d ",(int)(long)n); |
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109 | //if (d->f_debug!=NULL) fprintf(d->f_debug,"number: \"%ld\" ",(int)(long)n); |
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110 | } |
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111 | else if (rField_is_Q(d->r)) |
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112 | { |
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113 | if(SR_HDL(n) & SR_INT) |
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114 | { |
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115 | fprintf(d->f_write,"4 %ld ",SR_TO_INT(n)); |
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116 | //if (d->f_debug!=NULL) fprintf(d->f_debug,"number: short \"%ld\" ",SR_TO_INT(n)); |
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117 | } |
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118 | else if (n->s<2) |
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119 | { |
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120 | gmp_fprintf(d->f_write,"%d %Zd %Zd ",n->s,n->z,n->n); |
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121 | //if (d->f_debug!=NULL) gmp_fprintf(d->f_debug,"number: s=%d gmp/gmp \"%Zd %Zd\" ",n->s,n->z,n->n); |
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122 | } |
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123 | else /*n->s==3*/ |
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124 | { |
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125 | gmp_fprintf(d->f_write,"3 %Zd ",n->z); |
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126 | //if (d->f_debug!=NULL) gmp_fprintf(d->f_debug,"number: gmp \"%Zd\" ",n->z); |
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127 | } |
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128 | } |
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129 | else WerrorS("coeff field not implemented"); |
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130 | } |
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131 | |
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132 | void ssiWriteRing(ssiInfo *d,const ring r) |
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133 | { |
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134 | /* 5 <ch> <N> <l1> <s1>....<ln> <sN> */ |
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135 | if (d->r!=NULL) rKill(d->r); |
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136 | d->r=r; |
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137 | d->r->ref++; |
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138 | fprintf(d->f_write,"%d %d ",r->ch,r->N); |
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139 | |
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140 | int i; |
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141 | for(i=0;i<r->N;i++) |
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142 | { |
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143 | fprintf(d->f_write,"%d %s ",strlen(r->names[i]),r->names[i]); |
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144 | } |
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145 | /* number of orderings:*/ |
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146 | i=0; |
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147 | while (r->order[i]!=0) i++; |
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148 | fprintf(d->f_write,"%d ",i); |
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149 | /* each ordering block: */ |
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150 | i=0; |
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151 | while(r->order[i]!=0) |
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152 | { |
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153 | fprintf(d->f_write,"%d %d %d ",r->order[i],r->block0[i], r->block1[i]); |
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154 | i++; |
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155 | } |
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156 | } |
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157 | |
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158 | void ssiWritePoly(ssiInfo *d, int typ, poly p) |
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159 | { |
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160 | fprintf(d->f_write,"%d ",pLength(p));//number of terms |
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161 | int i; |
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162 | |
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163 | while(p!=NULL) |
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164 | { |
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165 | ssiWriteNumber(d,pGetCoeff(p)); |
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166 | //nWrite(fich,pGetCoeff(p)); |
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167 | fprintf(d->f_write,"%ld ",p_GetComp(p,d->r));//component |
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168 | |
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169 | for(int j=1;j<=rVar(d->r);j++) |
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170 | { |
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171 | fprintf(d->f_write,"%ld ",p_GetExp(p,j,d->r ));//x^j |
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172 | } |
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173 | pIter(p); |
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174 | } |
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175 | } |
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176 | |
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177 | void ssiWriteIdeal(ssiInfo *d, int typ,ideal I) |
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178 | { |
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179 | // syntax: 7 # of elements <poly 1> <poly2>..... |
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180 | // syntax: 8 <rows> <cols> <poly 1> <poly2>..... |
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181 | matrix M=(matrix)I; |
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182 | if (typ==MATRIX_CMD) |
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183 | fprintf(d->f_write,"%d %d ", MATROWS(M),MATCOLS(M)); |
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184 | else |
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185 | fprintf(d->f_write,"%d ",IDELEMS(I)); |
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186 | |
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187 | int i; |
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188 | int tt; |
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189 | if (typ==MODUL_CMD) tt=VECTOR_CMD; |
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190 | else tt=POLY_CMD; |
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191 | |
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192 | for(i=0;i<IDELEMS(I);i++) |
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193 | { |
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194 | ssiWritePoly(d,tt,I->m[i]); |
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195 | } |
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196 | } |
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197 | void ssiWriteCommand(si_link l, command D) |
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198 | { |
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199 | ssiInfo *d=(ssiInfo*)l->data; |
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200 | // syntax: <num ops> <operation> <op1> <op2> .... |
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201 | fprintf(d->f_write,"%d %d ",D->argc,D->op); |
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202 | if (D->argc >0) ssiWrite(l, &(D->arg1)); |
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203 | if (D->argc < 4) |
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204 | { |
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205 | if (D->argc >1) ssiWrite(l, &(D->arg2)); |
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206 | if (D->argc >2) ssiWrite(l, &(D->arg3)); |
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207 | } |
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208 | } |
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209 | |
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210 | void ssiWriteProc(ssiInfo *d,procinfov p) |
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211 | { |
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212 | ssiWriteString(d,p->data.s.body); |
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213 | } |
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214 | |
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215 | void ssiWriteList(si_link l,lists dd) |
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216 | { |
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217 | ssiInfo *d=(ssiInfo*)l->data; |
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218 | fprintf(d->f_write,"%d ",dd->nr+1); |
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219 | int i; |
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220 | for(i=0;i<=dd->nr;i++) |
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221 | { |
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222 | ssiWrite(l,&(dd->m[i])); |
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223 | } |
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224 | } |
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225 | |
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226 | char *ssiReadString(ssiInfo *d) |
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227 | { |
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228 | char *buf; |
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229 | int l; |
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230 | fscanf(d->f_read,"%d ",&l); |
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231 | buf=(char*)omAlloc(l+1); |
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232 | fread(buf,1,l,d->f_read); |
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233 | buf[l]='\0'; |
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234 | return buf; |
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235 | } |
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236 | |
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237 | int ssiReadInt(FILE *fich) |
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238 | { |
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239 | int d; |
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240 | fscanf(fich,"%d",&d); |
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241 | return d; |
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242 | } |
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243 | |
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244 | number ssiReadBigInt(ssiInfo *d) |
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245 | { |
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246 | int sub_type=-1; |
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247 | fscanf(d->f_read,"%d",&sub_type); |
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248 | switch(sub_type) |
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249 | { |
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250 | case 3: |
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251 | {// read int or mpz_t or mpz_t, mpz_t |
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252 | number n=nlRInit(0); |
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253 | gmp_fscanf(d->f_read,"%Zd",n->z); |
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254 | n->s=sub_type; |
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255 | return n; |
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256 | } |
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257 | case 4: { int dd; fscanf(d->f_read,"%d",&dd); return INT_TO_SR(dd); } |
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258 | default: Werror("error in reading number: invalid subtype %d",sub_type); |
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259 | return NULL; |
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260 | } |
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261 | } |
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262 | |
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263 | number ssiReadNumber(ssiInfo *d) |
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264 | { |
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265 | if (rField_is_Q(d->r)) |
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266 | { |
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267 | int sub_type=-1; |
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268 | fscanf(d->f_read,"%d",&sub_type); |
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269 | switch(sub_type) |
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270 | { |
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271 | case 0: |
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272 | case 1: |
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273 | {// read int or mpz_t or mpz_t, mpz_t |
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274 | number n=nlRInit(0); |
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275 | mpz_init(n->n); |
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276 | gmp_fscanf(d->f_read,"%Zd %Zd",n->z,n->n); |
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277 | n->s=sub_type; |
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278 | return n; |
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279 | } |
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280 | |
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281 | case 3: |
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282 | {// read int or mpz_t or mpz_t, mpz_t |
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283 | number n=nlRInit(0); |
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284 | gmp_fscanf(d->f_read,"%Zd",n->z); |
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285 | n->s=sub_type; |
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286 | return n; |
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287 | } |
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288 | case 4: { int dd; fscanf(d->f_read,"%d",&dd); return INT_TO_SR(dd); } |
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289 | default: Werror("error in reading number: invalid subtype %d",sub_type); |
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290 | return NULL; |
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291 | } |
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292 | } |
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293 | else if (rField_is_Zp(d->r)) |
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294 | { |
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295 | // read int |
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296 | int dd; |
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297 | fscanf(d->f_read,"%d",&dd); |
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298 | return (number)dd; |
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299 | } |
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300 | else Werror("coeffs not implemented"); |
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301 | return NULL; |
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302 | } |
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303 | |
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304 | ring ssiReadRing(ssiInfo *d) |
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305 | { |
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306 | /* syntax is <ch> <N> <l1> <s1> ....<lN> <sN> */ |
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307 | int ch, N,i,l; |
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308 | char **names; |
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309 | fscanf(d->f_read,"%d %d ",&ch,&N); |
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310 | names=(char**)omAlloc(N*sizeof(char*)); |
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311 | for(i=0;i<N;i++) |
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312 | { |
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313 | names[i]=ssiReadString(d); |
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314 | } |
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315 | // read the orderings: |
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316 | int num_ord; // number of orderings |
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317 | fscanf(d->f_read,"%d",&num_ord); |
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318 | int *ord=(int *)omAlloc0((num_ord+1)*sizeof(int)); |
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319 | int *block0=(int *)omAlloc0((num_ord+1)*sizeof(int)); |
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320 | int *block1=(int *)omAlloc0((num_ord+1)*sizeof(int)); |
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321 | for(i=0;i<num_ord;i++) |
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322 | { |
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323 | fscanf(d->f_read,"%d %d %d",&ord[i],&block0[i],&block1[i]); |
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324 | } |
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325 | return rDefault(ch,N,names,num_ord,ord,block0,block1); |
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326 | } |
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327 | |
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328 | poly ssiReadPoly(ssiInfo *D) |
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329 | { |
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330 | // < # of terms> < term1> < ..... |
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331 | int n,i,l; |
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332 | n=ssiReadInt(D->f_read); |
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333 | //Print("poly: terms:%d\n",n); |
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334 | poly p; |
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335 | int j; |
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336 | j=0; |
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337 | poly ret=NULL; |
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338 | poly prev=NULL; |
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339 | for(l=0;l<n;l++) // read n terms |
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340 | { |
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341 | // coef,comp.exp1,..exp N |
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342 | p=p_Init(D->r); |
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343 | pGetCoeff(p)=ssiReadNumber(D); |
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344 | int d; |
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345 | fscanf(D->f_read,"%d",&d); |
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346 | p_SetComp(p,d,D->r); |
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347 | for(i=1;i<=rVar(D->r);i++) |
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348 | { |
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349 | fscanf(D->f_read,"%d",&d); |
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350 | p_SetExp(p,i,d,D->r); |
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351 | } |
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352 | p_Setm(p,D->r); |
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353 | p_Test(p,D->r); |
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354 | if (ret==NULL) ret=p; |
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355 | else pNext(prev)=p; |
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356 | prev=p; |
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357 | } |
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358 | return ret; |
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359 | } |
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360 | |
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361 | ideal ssiReadIdeal(ssiInfo *d) |
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362 | { |
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363 | int n,i; |
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364 | ideal I; |
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365 | fscanf(d->f_read,"%d",&n); |
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366 | I=idInit(n,1); |
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367 | for(i=0;i<IDELEMS(I);i++) // read n terms |
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368 | { |
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369 | I->m [i]=ssiReadPoly(d); |
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370 | } |
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371 | return I; |
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372 | } |
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373 | |
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374 | matrix ssiReadMatrix(ssiInfo *d) |
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375 | { |
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376 | int n,m,i,j; |
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377 | fscanf(d->f_read,"%d %d",&m,&n); |
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378 | matrix M=mpNew(m,n); |
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379 | poly p; |
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380 | for(int i=1;i<=MATROWS(M);i++) |
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381 | for(int j=1;j<=MATCOLS(M);j++) |
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382 | { |
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383 | p=ssiReadPoly(d); |
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384 | MATELEM(M,i,j)=p; |
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385 | } |
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386 | return M; |
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387 | } |
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388 | |
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389 | command ssiReadCommand(si_link l) |
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390 | { |
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391 | ssiInfo *d=(ssiInfo*)l->data; |
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392 | // syntax: <num ops> <operation> <op1> <op2> .... |
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393 | command D=(command)omAlloc0(sizeof(*D)); |
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394 | int argc,op; |
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395 | fscanf(d->f_read,"%d %d",&argc,&op); |
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396 | D->argc=argc; D->op=op; |
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397 | leftv v; |
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398 | if (argc >0) |
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399 | { |
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400 | v=ssiRead1(l); |
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401 | memcpy(&(D->arg1),v,sizeof(*v)); |
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402 | omFreeBin(v,sleftv_bin); |
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403 | } |
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404 | if (argc <4) |
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405 | { |
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406 | if (D->argc >1) |
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407 | { |
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408 | v=ssiRead1(l); |
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409 | memcpy(&(D->arg2),v,sizeof(*v)); |
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410 | omFreeBin(v,sleftv_bin); |
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411 | } |
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412 | if (D->argc >2) |
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413 | { |
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414 | v=ssiRead1(l); |
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415 | memcpy(&(D->arg3),v,sizeof(*v)); |
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416 | omFreeBin(v,sleftv_bin); |
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417 | } |
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418 | } |
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419 | else |
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420 | { |
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421 | leftv prev=&(D->arg1); |
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422 | argc--; |
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423 | while(argc >0) |
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424 | { |
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425 | v=ssiRead1(l); |
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426 | prev->next=v; |
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427 | prev=v; |
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428 | argc--; |
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429 | } |
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430 | } |
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431 | return D; |
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432 | } |
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433 | |
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434 | procinfov ssiReadProc(ssiInfo *d) |
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435 | { |
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436 | char *s=ssiReadString(d); |
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437 | procinfov p=(procinfov)omAlloc0Bin(procinfo_bin); |
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438 | p->language=LANG_SINGULAR; |
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439 | p->libname=omStrDup(""); |
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440 | p->procname=omStrDup(""); |
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441 | p->data.s.body=s; |
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442 | return p; |
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443 | } |
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444 | lists ssiReadList(si_link l) |
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445 | { |
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446 | ssiInfo *d=(ssiInfo*)l->data; |
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447 | int nr; |
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448 | fscanf(d->f_read,"%d",&nr); |
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449 | lists L=(lists)omAlloc(sizeof(*L)); |
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450 | L->Init(nr); |
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451 | |
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452 | int i; |
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453 | leftv v; |
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454 | for(i=0;i<nr;i++) |
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455 | { |
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456 | v=ssiRead1(l); |
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457 | memcpy(&(L->m[i]),v,sizeof(*v)); |
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458 | omFreeBin(v,sleftv_bin); |
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459 | } |
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460 | return L; |
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461 | } |
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462 | |
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463 | //**************************************************************************/ |
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464 | BOOLEAN ssiOpen(si_link l, short flag) |
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465 | { |
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466 | const char *mode; |
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467 | ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo)); |
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468 | if (flag & SI_LINK_OPEN) |
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469 | { |
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470 | if (l->mode[0] != '\0' && (strcmp(l->mode, "r") == 0)) |
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471 | flag = SI_LINK_READ; |
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472 | else flag = SI_LINK_WRITE; |
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473 | } |
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474 | |
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475 | if (flag == SI_LINK_READ) mode = "r"; |
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476 | else if (strcmp(l->mode, "w") == 0) mode = "w"; |
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477 | else if (strcmp(l->mode, "fork") == 0) mode = "fork"; |
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478 | else if (strcmp(l->mode, "tcp") == 0) mode = "tcp"; |
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479 | else if (strcmp(l->mode, "connect") == 0) mode = "connect"; |
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480 | else mode = "a"; |
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481 | |
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482 | |
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483 | if (l->name[0] == '\0') |
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484 | { |
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485 | if (strcmp(mode,"fork")==0) |
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486 | { |
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487 | int pc[2]; |
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488 | int cp[2]; |
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489 | pipe(pc); |
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490 | pipe(cp); |
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491 | pid_t pid=fork(); |
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492 | if (pid==0) /*child*/ |
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493 | { |
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494 | close(pc[1]); close(cp[0]); |
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495 | d->f_read=fdopen(pc[0],"r"); |
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496 | d->fd_read=pc[0]; |
---|
497 | d->f_write=fdopen(cp[1],"w"); |
---|
498 | d->fd_write=cp[1]; |
---|
499 | l->data=d; |
---|
500 | omFree(l->mode); |
---|
501 | l->mode = omStrDup(mode); |
---|
502 | SI_LINK_SET_RW_OPEN_P(l); |
---|
503 | myynest=0; |
---|
504 | fe_fgets_stdin=fe_fgets_dummy; |
---|
505 | loop |
---|
506 | { |
---|
507 | leftv h=ssiRead1(l); /*contains an exit.... */ |
---|
508 | if (feErrors != NULL && *feErrors != '\0') |
---|
509 | { |
---|
510 | // handle errors: |
---|
511 | PrintS(feErrors); /* currently quite simple */ |
---|
512 | *feErrors = '\0'; |
---|
513 | } |
---|
514 | ssiWrite(l,h); |
---|
515 | h->CleanUp(); |
---|
516 | omFreeBin(h, sleftv_bin); |
---|
517 | } |
---|
518 | /* never reached*/ |
---|
519 | } |
---|
520 | else if (pid>0) |
---|
521 | { |
---|
522 | d->pid=pid; |
---|
523 | close(pc[0]); close(cp[1]); |
---|
524 | d->f_read=fdopen(cp[0],"r"); |
---|
525 | d->fd_read=cp[0]; |
---|
526 | d->f_write=fdopen(pc[1],"w"); |
---|
527 | d->fd_write=pc[1]; |
---|
528 | SI_LINK_SET_RW_OPEN_P(l); |
---|
529 | } |
---|
530 | else |
---|
531 | { |
---|
532 | Werror("fork failed (%d)",errno); |
---|
533 | } |
---|
534 | } |
---|
535 | else if (strcmp(mode,"tcp")==0) |
---|
536 | { |
---|
537 | int sockfd, newsockfd, portno, clilen; |
---|
538 | struct sockaddr_in serv_addr, cli_addr; |
---|
539 | int n; |
---|
540 | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
---|
541 | if(sockfd < 0) |
---|
542 | { |
---|
543 | WerrorS("ERROR opening socket"); |
---|
544 | return TRUE; |
---|
545 | } |
---|
546 | memset((char *) &serv_addr,0, sizeof(serv_addr)); |
---|
547 | portno = 1024; |
---|
548 | serv_addr.sin_family = AF_INET; |
---|
549 | serv_addr.sin_addr.s_addr = INADDR_ANY; |
---|
550 | do |
---|
551 | { |
---|
552 | portno++; |
---|
553 | serv_addr.sin_port = htons(portno); |
---|
554 | if(portno > 50000) |
---|
555 | { |
---|
556 | WerrorS("ERROR on binding (no free port available?)"); |
---|
557 | return TRUE; |
---|
558 | } |
---|
559 | } |
---|
560 | while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0); |
---|
561 | Print("waiting on port %d\n", portno);mflush(); |
---|
562 | listen(sockfd,5); |
---|
563 | newsockfd = accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen); |
---|
564 | if(newsockfd < 0) |
---|
565 | { |
---|
566 | WerrorS("ERROR on accept"); |
---|
567 | return TRUE; |
---|
568 | } |
---|
569 | PrintS("client accepted\n"); |
---|
570 | d->fd_read = newsockfd; |
---|
571 | d->fd_write = newsockfd; |
---|
572 | d->f_read = fdopen(newsockfd, "r"); |
---|
573 | d->f_write = fdopen(newsockfd, "w"); |
---|
574 | SI_LINK_SET_RW_OPEN_P(l); |
---|
575 | close(sockfd); |
---|
576 | } |
---|
577 | // stdin or stdout |
---|
578 | else if (flag == SI_LINK_READ) |
---|
579 | { |
---|
580 | d->f_read = stdin; |
---|
581 | mode = "r"; |
---|
582 | } |
---|
583 | else |
---|
584 | { |
---|
585 | d->f_write = stdout; |
---|
586 | mode = "a"; |
---|
587 | } |
---|
588 | } |
---|
589 | else /*l->name=NULL*/ |
---|
590 | { |
---|
591 | // tcp mode |
---|
592 | if(strcmp(mode,"tcp")==0) |
---|
593 | { |
---|
594 | int sockfd, newsockfd, portno, clilen; |
---|
595 | struct sockaddr_in serv_addr, cli_addr; |
---|
596 | int n; |
---|
597 | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
---|
598 | if(sockfd < 0) |
---|
599 | { |
---|
600 | WerrorS("ERROR opening socket"); |
---|
601 | return TRUE; |
---|
602 | } |
---|
603 | memset((char *) &serv_addr,0, sizeof(serv_addr)); |
---|
604 | portno = 1024; |
---|
605 | serv_addr.sin_family = AF_INET; |
---|
606 | serv_addr.sin_addr.s_addr = INADDR_ANY; |
---|
607 | do |
---|
608 | { |
---|
609 | portno++; |
---|
610 | serv_addr.sin_port = htons(portno); |
---|
611 | if(portno > 50000) |
---|
612 | { |
---|
613 | WerrorS("ERROR on binding (no free port available?)"); |
---|
614 | return TRUE; |
---|
615 | } |
---|
616 | } |
---|
617 | while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0); |
---|
618 | //Print("waiting on port %d\n", portno);mflush(); |
---|
619 | listen(sockfd,5); |
---|
620 | char* cli_host = (char*)omAlloc(256); |
---|
621 | char* path = (char*)omAlloc(1024); |
---|
622 | int r = sscanf(l->name,"%255[^:]:%s",cli_host,path); |
---|
623 | if(r == 0) |
---|
624 | { |
---|
625 | WerrorS("ERROR: no host specified"); |
---|
626 | return TRUE; |
---|
627 | } |
---|
628 | else if(r == 1) |
---|
629 | { |
---|
630 | path = "Singular"; |
---|
631 | } |
---|
632 | char* ssh_command = (char*)omAlloc(256); |
---|
633 | char* ser_host = (char*)omAlloc(64); |
---|
634 | gethostname(ser_host,64); |
---|
635 | sprintf(ssh_command,"ssh %s %s -q --batch --link=ssi --MPhost=%s --MPport=%d &",cli_host,path,ser_host,portno); |
---|
636 | system(ssh_command); |
---|
637 | //Print("client on %s started:%s\n",cli_host,path); |
---|
638 | clilen = sizeof(cli_addr); |
---|
639 | newsockfd = accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen); |
---|
640 | if(newsockfd < 0) |
---|
641 | { |
---|
642 | WerrorS("ERROR on accept"); |
---|
643 | return TRUE; |
---|
644 | } |
---|
645 | //PrintS("client accepted\n"); |
---|
646 | d->fd_read = newsockfd; |
---|
647 | d->fd_write = newsockfd; |
---|
648 | d->f_read = fdopen(newsockfd, "r"); |
---|
649 | d->f_write = fdopen(newsockfd, "w"); |
---|
650 | SI_LINK_SET_RW_OPEN_P(l); |
---|
651 | close(sockfd); |
---|
652 | } |
---|
653 | else if(strcmp(mode,"connect")==0) |
---|
654 | { |
---|
655 | char* host = (char*)omAlloc(256); |
---|
656 | int sockfd, portno, n; |
---|
657 | struct sockaddr_in serv_addr; |
---|
658 | struct hostent *server; |
---|
659 | |
---|
660 | sscanf(l->name,"%255[^:]:%d",host,&portno); |
---|
661 | //Print("connect to host %s, port %d\n",host,portno);mflush(); |
---|
662 | if (portno!=0) |
---|
663 | { |
---|
664 | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
---|
665 | if (sockfd < 0) { WerrorS("ERROR opening socket"); return TRUE; } |
---|
666 | server = gethostbyname(host); |
---|
667 | if (server == NULL) { WerrorS("ERROR, no such host"); return TRUE; } |
---|
668 | memset((char *) &serv_addr, 0, sizeof(serv_addr)); |
---|
669 | serv_addr.sin_family = AF_INET; |
---|
670 | memcpy((char *)&serv_addr.sin_addr.s_addr, |
---|
671 | (char *)server->h_addr, |
---|
672 | server->h_length); |
---|
673 | serv_addr.sin_port = htons(portno); |
---|
674 | if (connect(sockfd,(sockaddr*)&serv_addr,sizeof(serv_addr)) < 0) |
---|
675 | { WerrorS("ERROR connecting"); return TRUE; } |
---|
676 | //PrintS("connected\n");mflush(); |
---|
677 | d->f_read=fdopen(sockfd,"r"); |
---|
678 | d->fd_read=sockfd; |
---|
679 | d->f_write=fdopen(sockfd,"w"); |
---|
680 | d->fd_write=sockfd; |
---|
681 | l->data=d; |
---|
682 | SI_LINK_SET_RW_OPEN_P(l); |
---|
683 | omFree(host); |
---|
684 | } |
---|
685 | else return TRUE; |
---|
686 | } |
---|
687 | else |
---|
688 | { |
---|
689 | // normal ascii link to a file |
---|
690 | FILE *outfile; |
---|
691 | char *filename=l->name; |
---|
692 | |
---|
693 | if(filename[0]=='>') |
---|
694 | { |
---|
695 | if (filename[1]=='>') |
---|
696 | { |
---|
697 | filename+=2; |
---|
698 | mode = "a"; |
---|
699 | } |
---|
700 | else |
---|
701 | { |
---|
702 | filename++; |
---|
703 | mode="w"; |
---|
704 | } |
---|
705 | } |
---|
706 | outfile=myfopen(filename,mode); |
---|
707 | if (outfile!=NULL) |
---|
708 | { |
---|
709 | if (strcmp(l->mode,"r")==0) d->f_read = outfile; |
---|
710 | else d->f_write = outfile; |
---|
711 | } |
---|
712 | else |
---|
713 | { |
---|
714 | omFree(d); |
---|
715 | return TRUE; |
---|
716 | } |
---|
717 | } |
---|
718 | } |
---|
719 | l->data=d; |
---|
720 | |
---|
721 | omFree(l->mode); |
---|
722 | l->mode = omStrDup(mode); |
---|
723 | SI_LINK_SET_OPEN_P(l, flag); |
---|
724 | return FALSE; |
---|
725 | } |
---|
726 | |
---|
727 | //**************************************************************************/ |
---|
728 | LINKAGE BOOLEAN ssiClose(si_link l) |
---|
729 | { |
---|
730 | ssiInfo *d = (ssiInfo *)l->data; |
---|
731 | if (d!=NULL) |
---|
732 | { |
---|
733 | if ((strcmp(l->mode,"tcp")==0) |
---|
734 | || (strcmp(l->mode,"fork")==0)) |
---|
735 | { |
---|
736 | fprintf(d->f_write,"99\n");fflush(d->f_write); |
---|
737 | } |
---|
738 | if (d->f_read!=NULL) fclose(d->f_read); |
---|
739 | if (d->f_write!=NULL) fclose(d->f_write); |
---|
740 | if (d->r!=NULL) rKill(d->r); |
---|
741 | if (d->pid!=0) { kill(d->pid,15); kill(d->pid,9); } |
---|
742 | omFreeSize((ADDRESS)d,(sizeof *d)); |
---|
743 | } |
---|
744 | l->data=NULL; |
---|
745 | SI_LINK_SET_CLOSE_P(l); |
---|
746 | return FALSE; |
---|
747 | } |
---|
748 | |
---|
749 | //**************************************************************************/ |
---|
750 | LINKAGE leftv ssiRead1(si_link l) |
---|
751 | { |
---|
752 | ssiInfo *d = (ssiInfo *)l->data; |
---|
753 | leftv res=(leftv)omAlloc0(sizeof(sleftv)); |
---|
754 | int t=0; |
---|
755 | fscanf(d->f_read,"%d",&t); |
---|
756 | //Print("got type %d\n",t); |
---|
757 | switch(t) |
---|
758 | { |
---|
759 | case 1:res->rtyp=INT_CMD; |
---|
760 | res->data=(char *)ssiReadInt(d->f_read); |
---|
761 | break; |
---|
762 | case 2:res->rtyp=STRING_CMD; |
---|
763 | res->data=(char *)ssiReadString(d); |
---|
764 | break; |
---|
765 | case 3:res->rtyp=NUMBER_CMD; |
---|
766 | res->data=(char *)ssiReadNumber(d); |
---|
767 | break; |
---|
768 | case 4:res->rtyp=BIGINT_CMD; |
---|
769 | res->data=(char *)ssiReadBigInt(d); |
---|
770 | break; |
---|
771 | case 15: |
---|
772 | case 5:{ |
---|
773 | d->r=ssiReadRing(d); |
---|
774 | d->r->ref++; |
---|
775 | res->rtyp=RING_CMD; |
---|
776 | res->data=(char*)d->r; |
---|
777 | // we are in the top-level, so set the basering to d->r: |
---|
778 | ssiSetCurrRing(d->r); |
---|
779 | if (t==15) return ssiRead1(l); |
---|
780 | } |
---|
781 | break; |
---|
782 | case 6:res->rtyp=POLY_CMD; |
---|
783 | if (d->r==NULL) goto no_ring; |
---|
784 | res->data=(char*)ssiReadPoly(d); |
---|
785 | break; |
---|
786 | case 7:res->rtyp=IDEAL_CMD; |
---|
787 | if (d->r==NULL) goto no_ring; |
---|
788 | res->data=(char*)ssiReadIdeal(d); |
---|
789 | break; |
---|
790 | case 8:res->rtyp=MATRIX_CMD; |
---|
791 | if (d->r==NULL) goto no_ring; |
---|
792 | res->data=(char*)ssiReadMatrix(d); |
---|
793 | break; |
---|
794 | case 9:res->rtyp=VECTOR_CMD; |
---|
795 | if (d->r==NULL) goto no_ring; |
---|
796 | res->data=(char*)ssiReadPoly(d); |
---|
797 | break; |
---|
798 | case 10:res->rtyp=MODUL_CMD; |
---|
799 | if (d->r==NULL) goto no_ring; |
---|
800 | res->data=(char*)ssiReadIdeal(d); |
---|
801 | break; |
---|
802 | case 11: |
---|
803 | { |
---|
804 | res->rtyp=COMMAND; |
---|
805 | res->data=ssiReadCommand(l); |
---|
806 | int nok=res->Eval(); |
---|
807 | if (nok) WerrorS("error in eval"); |
---|
808 | break; |
---|
809 | } |
---|
810 | case 12: /*DEF_CMD*/ |
---|
811 | { |
---|
812 | res->rtyp=0; |
---|
813 | res->name=(char *)ssiReadString(d); |
---|
814 | int nok=res->Eval(); |
---|
815 | if (nok) WerrorS("error in name lookup"); |
---|
816 | break; |
---|
817 | } |
---|
818 | case 13: res->rtyp=PROC_CMD; |
---|
819 | res->data=ssiReadProc(d); |
---|
820 | break; |
---|
821 | case 14: res->rtyp=LIST_CMD; |
---|
822 | res->data=ssiReadList(l); |
---|
823 | break; |
---|
824 | case 16: res->rtyp=NONE; res->data=NULL; |
---|
825 | break; |
---|
826 | case 99: ssiClose(l); exit(0); |
---|
827 | case 0: if (feof(d->f_read)) |
---|
828 | { |
---|
829 | ssiClose(l); |
---|
830 | res->rtyp=DEF_CMD; |
---|
831 | break; |
---|
832 | } |
---|
833 | default: Werror("not implemented (t:%d)",t); |
---|
834 | omFreeSize(res,sizeof(sleftv)); |
---|
835 | res=NULL; |
---|
836 | break; |
---|
837 | } |
---|
838 | return res; |
---|
839 | no_ring: WerrorS("no ring"); |
---|
840 | return NULL; |
---|
841 | } |
---|
842 | //**************************************************************************/ |
---|
843 | LINKAGE BOOLEAN ssiWrite(si_link l, leftv data) |
---|
844 | { |
---|
845 | if(!SI_LINK_W_OPEN_P(l)) slOpen(l,SI_LINK_OPEN|SI_LINK_WRITE); |
---|
846 | ssiInfo *d = (ssiInfo *)l->data; |
---|
847 | d->level++; |
---|
848 | //FILE *fich=d->f; |
---|
849 | while (data!=NULL) |
---|
850 | { |
---|
851 | int tt=data->Typ(); |
---|
852 | void *dd=data->Data(); |
---|
853 | |
---|
854 | switch(tt /*data->Typ()*/) |
---|
855 | { |
---|
856 | case NONE/* nothing*/:fprintf(d->f_write,"16 "); |
---|
857 | break; |
---|
858 | case STRING_CMD: fprintf(d->f_write,"2 "); |
---|
859 | ssiWriteString(d,(char *)dd); |
---|
860 | break; |
---|
861 | case INT_CMD: fprintf(d->f_write,"1 "); |
---|
862 | ssiWriteInt(d,(int)(long)dd); |
---|
863 | break; |
---|
864 | case BIGINT_CMD:fprintf(d->f_write,"4 "); |
---|
865 | ssiWriteBigInt(d,(number)dd); |
---|
866 | break; |
---|
867 | case NUMBER_CMD: |
---|
868 | if (d->r!=currRing) |
---|
869 | { |
---|
870 | fprintf(d->f_write,"15 "); |
---|
871 | ssiWriteRing(d,currRing); |
---|
872 | if (d->level<=1) fprintf(d->f_write,"\n"); |
---|
873 | } |
---|
874 | fprintf(d->f_write,"3 "); |
---|
875 | ssiWriteNumber(d,(number)dd); |
---|
876 | break; |
---|
877 | case RING_CMD:fprintf(d->f_write,"5 "); |
---|
878 | ssiWriteRing(d,(ring)dd); |
---|
879 | break; |
---|
880 | case POLY_CMD: |
---|
881 | case VECTOR_CMD: |
---|
882 | if (d->r!=currRing) |
---|
883 | { |
---|
884 | fprintf(d->f_write,"15 "); |
---|
885 | ssiWriteRing(d,currRing); |
---|
886 | if (d->level<=1) fprintf(d->f_write,"\n"); |
---|
887 | } |
---|
888 | if(tt==POLY_CMD) fprintf(d->f_write,"6 "); |
---|
889 | else fprintf(d->f_write,"9 "); |
---|
890 | ssiWritePoly(d,tt,(poly)dd); |
---|
891 | break; |
---|
892 | case IDEAL_CMD: |
---|
893 | case MODUL_CMD: |
---|
894 | case MATRIX_CMD: |
---|
895 | if (d->r!=currRing) |
---|
896 | { |
---|
897 | fprintf(d->f_write,"15 "); |
---|
898 | ssiWriteRing(d,currRing); |
---|
899 | if (d->level<=1) fprintf(d->f_write,"\n"); |
---|
900 | } |
---|
901 | if(tt==IDEAL_CMD) fprintf(d->f_write,"7 "); |
---|
902 | else if(tt==MATRIX_CMD) fprintf(d->f_write,"8 "); |
---|
903 | else fprintf(d->f_write,"10 "); |
---|
904 | ssiWriteIdeal(d,tt,(ideal)dd); |
---|
905 | break; |
---|
906 | case COMMAND: |
---|
907 | fprintf(d->f_write,"11 "); |
---|
908 | ssiWriteCommand(l,(command)dd); |
---|
909 | break; |
---|
910 | case DEF_CMD: /* not evaluated stuff in quotes */ |
---|
911 | fprintf(d->f_write,"12 "); |
---|
912 | ssiWriteString(d,data->Name()); |
---|
913 | break; |
---|
914 | case PROC_CMD: |
---|
915 | fprintf(d->f_write,"13 "); |
---|
916 | ssiWriteProc(d,(procinfov)dd); |
---|
917 | break; |
---|
918 | case LIST_CMD: |
---|
919 | fprintf(d->f_write,"14 "); |
---|
920 | ssiWriteList(l,(lists)dd); |
---|
921 | break; |
---|
922 | default: Werror("not implemented (t:%d, rtyp:%d)",tt, data->rtyp); |
---|
923 | d->level=0; |
---|
924 | return TRUE; |
---|
925 | } |
---|
926 | if (d->level<=1) { fprintf(d->f_write,"\n"); fflush(d->f_write); } |
---|
927 | data=data->next; |
---|
928 | } |
---|
929 | d->level--; |
---|
930 | return FALSE; |
---|
931 | } |
---|
932 | |
---|
933 | si_link_extension slInitSsiExtension(si_link_extension s) |
---|
934 | { |
---|
935 | s->Open=(slOpenProc)ssiOpen; |
---|
936 | s->Close=(slCloseProc)ssiClose; |
---|
937 | s->Kill=(slKillProc)ssiClose; |
---|
938 | s->Read=(slReadProc)ssiRead1; |
---|
939 | s->Read2=(slRead2Proc)NULL; |
---|
940 | s->Write=(slWriteProc)ssiWrite; |
---|
941 | |
---|
942 | s->Status=slStatusSsi; |
---|
943 | s->type="ssi"; |
---|
944 | return s; |
---|
945 | } |
---|
946 | const char* slStatusSsi(si_link l, const char* request) |
---|
947 | { |
---|
948 | ssiInfo *d=(ssiInfo*)l->data; |
---|
949 | if (d==NULL) return "not open"; |
---|
950 | if (((strcmp(l->mode,"fork")==0)||(strcmp(l->mode,"tcp")==0)) |
---|
951 | && (strcmp(request, "read") == 0)) |
---|
952 | { |
---|
953 | fd_set mask, fdmask; |
---|
954 | struct timeval wt; |
---|
955 | loop |
---|
956 | { |
---|
957 | /* Don't block. Return socket status immediately. */ |
---|
958 | wt.tv_sec = 0; |
---|
959 | wt.tv_usec = 0; |
---|
960 | |
---|
961 | FD_ZERO(&mask); |
---|
962 | FD_SET(d->fd_read, &mask); |
---|
963 | //Print("test fd %d\n",d->fd_read); |
---|
964 | /* check with select: chars waiting: no -> not ready */ |
---|
965 | switch (select(d->fd_read+1, &mask, NULL, NULL, &wt)) |
---|
966 | { |
---|
967 | case 0: /* not ready */ return "not ready"; |
---|
968 | case -1: /*error*/ return "error"; |
---|
969 | case 1: /*ready ? */ break; |
---|
970 | } |
---|
971 | /* yes: read 1 char*/ |
---|
972 | /* if \n, check again with select else ungetc(c), ready*/ |
---|
973 | int c=fgetc(d->f_read); |
---|
974 | //Print("try c=%d\n",c); |
---|
975 | if (c== -1) return "eof"; |
---|
976 | else if (isdigit(c)) |
---|
977 | { ungetc(c,d->f_read); return "ready"; } |
---|
978 | else if (c>' ') |
---|
979 | { |
---|
980 | Werror("unknown char in ssiLink(%d)",c); |
---|
981 | return "error"; |
---|
982 | } |
---|
983 | /* else: next char */ |
---|
984 | } |
---|
985 | } |
---|
986 | else if (strcmp(request, "read") == 0) |
---|
987 | { |
---|
988 | if (SI_LINK_R_OPEN_P(l) && (!feof(d->f_read))) return "ready"; |
---|
989 | else return "not ready"; |
---|
990 | } |
---|
991 | else if (strcmp(request, "write") == 0) |
---|
992 | { |
---|
993 | if (SI_LINK_W_OPEN_P(l)) return "ready"; |
---|
994 | else return "not ready"; |
---|
995 | } |
---|
996 | else return "unknown status request"; |
---|
997 | } |
---|
998 | |
---|
999 | int ssiBatch(const char *host, const char * port) |
---|
1000 | /* return 0 on success, >0 else*/ |
---|
1001 | { |
---|
1002 | si_link l=(si_link) omAlloc0Bin(sip_link_bin); |
---|
1003 | char *buf=(char*)omAlloc(256); |
---|
1004 | sprintf(buf,"ssi:connect %s:%s",host,port); |
---|
1005 | slInit(l, buf); |
---|
1006 | slOpen(l,SI_LINK_OPEN); |
---|
1007 | SI_LINK_SET_RW_OPEN_P(l); |
---|
1008 | loop |
---|
1009 | { |
---|
1010 | leftv h=ssiRead1(l); /*contains an exit.... */ |
---|
1011 | if (feErrors != NULL && *feErrors != '\0') |
---|
1012 | { |
---|
1013 | // handle errors: |
---|
1014 | PrintS(feErrors); /* currently quite simple */ |
---|
1015 | *feErrors = '\0'; |
---|
1016 | } |
---|
1017 | ssiWrite(l,h); |
---|
1018 | h->CleanUp(); |
---|
1019 | omFreeBin(h, sleftv_bin); |
---|
1020 | } |
---|
1021 | /* never reached*/ |
---|
1022 | exit(0); |
---|
1023 | } |
---|
1024 | |
---|
1025 | // ---------------------------------------------------------------- |
---|
1026 | // format |
---|
1027 | // 1 int %d |
---|
1028 | // 2 string <len> %s |
---|
1029 | // 3 number |
---|
1030 | // 4 bigint 4 %d or 3 <mpz_t> |
---|
1031 | // 5 ring |
---|
1032 | // 6 poly |
---|
1033 | // 7 ideal |
---|
1034 | // 8 matrix |
---|
1035 | // 9 vector |
---|
1036 | // 10 module |
---|
1037 | // 11 command |
---|
1038 | // 12 def <len> %s |
---|
1039 | // 13 proc <len> %s |
---|
1040 | // 14 list %d <elem1> .... |
---|
1041 | // 15 setring ....... |
---|
1042 | // 16 nothing |
---|
1043 | // |
---|
1044 | // 99: quit Singular |
---|