[0e1846] | 1 | /**************************************** |
---|
| 2 | * Computer Algebra System SINGULAR * |
---|
| 3 | ****************************************/ |
---|
[32df82] | 4 | |
---|
[0e1846] | 5 | /* |
---|
[6ae4f5] | 6 | * ABSTRACT: general interface to links |
---|
[d754b7] | 7 | */ |
---|
[0e1846] | 8 | |
---|
| 9 | #include <stdio.h> |
---|
| 10 | #include <string.h> |
---|
[644227] | 11 | #include <sys/types.h> |
---|
| 12 | #include <sys/stat.h> |
---|
| 13 | #include <unistd.h> |
---|
| 14 | |
---|
[762407] | 15 | #include "config.h" |
---|
[b1dfaf] | 16 | #include <kernel/mod2.h> |
---|
[599326] | 17 | #include <Singular/tok.h> |
---|
[0fb34ba] | 18 | #include <misc/options.h> |
---|
[b1dfaf] | 19 | #include <omalloc/omalloc.h> |
---|
[599326] | 20 | #include <kernel/febase.h> |
---|
| 21 | #include <Singular/subexpr.h> |
---|
| 22 | #include <Singular/ipid.h> |
---|
[44ca2f] | 23 | #include <Singular/links/silink.h> |
---|
[599326] | 24 | #include <Singular/ipshell.h> |
---|
[0fb34ba] | 25 | #include <polys/matpol.h> |
---|
| 26 | #include <polys/monomials/ring.h> |
---|
[599326] | 27 | #include <Singular/lists.h> |
---|
| 28 | #include <kernel/ideals.h> |
---|
[0fb34ba] | 29 | #include <coeffs/numbers.h> |
---|
| 30 | #include <misc/intvec.h> |
---|
[47367fd] | 31 | #include <Singular/links/ssiLink.h> |
---|
| 32 | #include <Singular/links/pipeLink.h> |
---|
[c90500] | 33 | #include "feOpt.h" |
---|
[286bd57] | 34 | |
---|
[0c7cb8] | 35 | // #ifdef HAVE_DBM |
---|
| 36 | // #ifdef ix86_Win |
---|
| 37 | // #define USE_GDBM |
---|
| 38 | // #endif |
---|
| 39 | // #endif |
---|
[50cbdc] | 40 | |
---|
[c232af] | 41 | omBin s_si_link_extension_bin = omGetSpecBin(sizeof(s_si_link_extension)); |
---|
| 42 | omBin sip_link_bin = omGetSpecBin(sizeof(sip_link)); |
---|
| 43 | omBin ip_link_bin = omGetSpecBin(sizeof(ip_link)); |
---|
| 44 | |
---|
[0e1846] | 45 | /* ====================================================================== */ |
---|
[4da485] | 46 | static si_link_extension slTypeInit(si_link_extension s, const char* type); |
---|
[0e1846] | 47 | si_link_extension si_link_root=NULL; |
---|
[d754b7] | 48 | |
---|
[0e1846] | 49 | BOOLEAN slInit(si_link l, char *istr) |
---|
| 50 | { |
---|
[d754b7] | 51 | char *type = NULL, *mode = NULL, *name = NULL; |
---|
| 52 | int i = 0, j; |
---|
[c20843] | 53 | |
---|
[d754b7] | 54 | // set mode and type |
---|
| 55 | if (istr != NULL) |
---|
[0e1846] | 56 | { |
---|
[d754b7] | 57 | // find the first colon char in istr |
---|
| 58 | i = 0; |
---|
| 59 | while (istr[i] != ':' && istr[i] != '\0') i++; |
---|
| 60 | if (istr[i] == ':') |
---|
[0e1846] | 61 | { |
---|
[d754b7] | 62 | // if found, set type |
---|
| 63 | if (i > 0) |
---|
[0e1846] | 64 | { |
---|
[d754b7] | 65 | istr[i] = '\0'; |
---|
[c232af] | 66 | type = omStrDup(istr); |
---|
[d754b7] | 67 | istr[i] = ':'; |
---|
[0e1846] | 68 | } |
---|
[d754b7] | 69 | // and check for mode |
---|
| 70 | j = ++i; |
---|
| 71 | while (istr[j] != ' ' && istr[j] != '\0') j++; |
---|
| 72 | if (j > i) |
---|
[0e1846] | 73 | { |
---|
[c232af] | 74 | mode = omStrDup(&(istr[i])); |
---|
[d754b7] | 75 | mode[j - i] = '\0'; |
---|
[0e1846] | 76 | } |
---|
[d754b7] | 77 | // and for the name |
---|
| 78 | while (istr[j] == ' '&& istr[j] != '\0') j++; |
---|
[c232af] | 79 | if (istr[j] != '\0') name = omStrDup(&(istr[j])); |
---|
[d754b7] | 80 | } |
---|
| 81 | else // no colon find -- string is entire name |
---|
| 82 | { |
---|
| 83 | j=0; |
---|
| 84 | while (istr[j] == ' '&& istr[j] != '\0') j++; |
---|
[c232af] | 85 | if (istr[j] != '\0') name = omStrDup(&(istr[j])); |
---|
[0e1846] | 86 | } |
---|
| 87 | } |
---|
[e6969d] | 88 | |
---|
[d754b7] | 89 | // set the link extension |
---|
| 90 | if (type != NULL) |
---|
[0e1846] | 91 | { |
---|
[d754b7] | 92 | si_link_extension s = si_link_root; |
---|
[6b32990] | 93 | si_link_extension prev = s; |
---|
[c20843] | 94 | |
---|
[6b32990] | 95 | while (strcmp(s->type, type) != 0) |
---|
| 96 | { |
---|
[50cbdc] | 97 | if (s->next == NULL) |
---|
[6b32990] | 98 | { |
---|
| 99 | prev = s; |
---|
| 100 | s = NULL; |
---|
| 101 | break; |
---|
| 102 | } |
---|
| 103 | else |
---|
| 104 | { |
---|
| 105 | s = s->next; |
---|
| 106 | } |
---|
| 107 | } |
---|
[d754b7] | 108 | |
---|
| 109 | if (s != NULL) |
---|
| 110 | l->m = s; |
---|
| 111 | else |
---|
[0e1846] | 112 | { |
---|
[6b32990] | 113 | l->m = slTypeInit(prev, type); |
---|
[0e1846] | 114 | } |
---|
[c232af] | 115 | omFree(type); |
---|
[0e1846] | 116 | } |
---|
[d754b7] | 117 | else |
---|
| 118 | l->m = si_link_root; |
---|
| 119 | |
---|
[6b32990] | 120 | if (l->m == NULL) return TRUE; |
---|
[50cbdc] | 121 | |
---|
[c232af] | 122 | l->name = (name != NULL ? name : omStrDup("")); |
---|
| 123 | l->mode = (mode != NULL ? mode : omStrDup("")); |
---|
[d754b7] | 124 | l->ref = 1; |
---|
| 125 | return FALSE; |
---|
[0e1846] | 126 | } |
---|
| 127 | |
---|
[e6969d] | 128 | void slCleanUp(si_link l) |
---|
[0e1846] | 129 | { |
---|
[e6969d] | 130 | (l->ref)--; |
---|
[d754b7] | 131 | if (l->ref == 0) |
---|
[0e1846] | 132 | { |
---|
[80419f] | 133 | if (SI_LINK_OPEN_P(l)) |
---|
| 134 | { |
---|
| 135 | if (l->m->Kill != NULL) l->m->Kill(l); |
---|
| 136 | else if (l->m->Close != NULL) l->m->Close(l); |
---|
| 137 | } |
---|
[c232af] | 138 | omFree((ADDRESS)l->name); |
---|
| 139 | omFree((ADDRESS)l->mode); |
---|
[d754b7] | 140 | memset((void *) l, 0, sizeof(ip_link)); |
---|
[e6969d] | 141 | } |
---|
| 142 | } |
---|
| 143 | |
---|
| 144 | void slKill(si_link l) |
---|
| 145 | { |
---|
[d754b7] | 146 | slCleanUp(l); |
---|
[e6969d] | 147 | if (l->ref == 0) |
---|
[c232af] | 148 | omFreeBin((ADDRESS)l, ip_link_bin); |
---|
[0e1846] | 149 | } |
---|
| 150 | |
---|
[9db0567] | 151 | const char* slStatus(si_link l, const char *request) |
---|
[0e1846] | 152 | { |
---|
[d754b7] | 153 | if (l == NULL) return "empty link"; |
---|
| 154 | else if (l->m == NULL) return "unknown link type"; |
---|
| 155 | else if (strcmp(request, "type") == 0) return l->m->type; |
---|
| 156 | else if (strcmp(request, "mode") == 0) return l->mode; |
---|
| 157 | else if (strcmp(request, "name") == 0) return l->name; |
---|
[644227] | 158 | else if (strcmp(request, "exists") ==0) |
---|
| 159 | { |
---|
| 160 | struct stat buf; |
---|
| 161 | if (lstat(l->name,&buf)==0) return "yes"; |
---|
| 162 | else return "no"; |
---|
| 163 | } |
---|
[d754b7] | 164 | else if (strcmp(request, "open") == 0) |
---|
| 165 | { |
---|
| 166 | if (SI_LINK_OPEN_P(l)) return "yes"; |
---|
| 167 | else return "no"; |
---|
| 168 | } |
---|
| 169 | else if (strcmp(request, "openread") == 0) |
---|
| 170 | { |
---|
| 171 | if (SI_LINK_R_OPEN_P(l)) return "yes"; |
---|
| 172 | else return "no"; |
---|
| 173 | } |
---|
| 174 | else if (strcmp(request, "openwrite") == 0) |
---|
| 175 | { |
---|
| 176 | if (SI_LINK_W_OPEN_P(l)) return "yes"; |
---|
| 177 | else return "no"; |
---|
| 178 | } |
---|
| 179 | else if (l->m->Status == NULL) return "unknown status request"; |
---|
| 180 | else return l->m->Status(l, request); |
---|
[0e1846] | 181 | } |
---|
| 182 | |
---|
[d754b7] | 183 | //-------------------------------------------------------------------------- |
---|
[b5f276e] | 184 | BOOLEAN slOpen(si_link l, short flag, leftv h) |
---|
[0e1846] | 185 | { |
---|
[47a616d] | 186 | BOOLEAN res = TRUE; |
---|
| 187 | if (l!=NULL) |
---|
| 188 | { |
---|
[c20843] | 189 | |
---|
[47a616d] | 190 | if (l->m == NULL) slInit(l, ((char*)"")); |
---|
[d754b7] | 191 | |
---|
[c90500] | 192 | if (feOptValue(FE_OPT_NO_SHELL)) {WerrorS("no links allowed");return TRUE;} |
---|
| 193 | |
---|
[47a616d] | 194 | const char *c="_";; |
---|
| 195 | if (h!=NULL) c=h->Name(); |
---|
| 196 | |
---|
| 197 | if (SI_LINK_OPEN_P(l)) |
---|
| 198 | { |
---|
| 199 | Warn("open: link of type: %s, mode: %s, name: %s is already open", |
---|
[d754b7] | 200 | l->m->type, l->mode, l->name); |
---|
[47a616d] | 201 | return FALSE; |
---|
| 202 | } |
---|
| 203 | else if (l->m->Open != NULL) |
---|
| 204 | { |
---|
| 205 | res = l->m->Open(l, flag, h); |
---|
| 206 | if (res) |
---|
| 207 | Werror("open: Error for link %s of type: %s, mode: %s, name: %s", |
---|
| 208 | c, l->m->type, l->mode, l->name); |
---|
| 209 | } |
---|
[d754b7] | 210 | } |
---|
| 211 | return res; |
---|
[0e1846] | 212 | } |
---|
| 213 | |
---|
[df326b] | 214 | BOOLEAN slPrepClose(si_link l) |
---|
| 215 | { |
---|
| 216 | |
---|
| 217 | if(! SI_LINK_OPEN_P(l)) |
---|
| 218 | return FALSE; |
---|
| 219 | |
---|
| 220 | BOOLEAN res = TRUE; |
---|
| 221 | if (l->m->PrepClose != NULL) |
---|
| 222 | { |
---|
| 223 | res = l->m->PrepClose(l); |
---|
| 224 | if (res) |
---|
| 225 | Werror("close: Error for link of type: %s, mode: %s, name: %s", |
---|
| 226 | l->m->type, l->mode, l->name); |
---|
| 227 | } |
---|
| 228 | return res; |
---|
| 229 | } |
---|
| 230 | |
---|
[0e1846] | 231 | BOOLEAN slClose(si_link l) |
---|
| 232 | { |
---|
[d754b7] | 233 | |
---|
[1fc83c0] | 234 | if(! SI_LINK_OPEN_P(l)) |
---|
| 235 | return FALSE; |
---|
[c20843] | 236 | |
---|
[47a616d] | 237 | BOOLEAN res = TRUE; |
---|
| 238 | if (l->m->Close != NULL) |
---|
| 239 | { |
---|
| 240 | res = l->m->Close(l); |
---|
| 241 | if (res) |
---|
| 242 | Werror("close: Error for link of type: %s, mode: %s, name: %s", |
---|
[d754b7] | 243 | l->m->type, l->mode, l->name); |
---|
[47a616d] | 244 | } |
---|
[d754b7] | 245 | return res; |
---|
[0e1846] | 246 | } |
---|
| 247 | |
---|
[d754b7] | 248 | leftv slRead(si_link l, leftv a) |
---|
[0e1846] | 249 | { |
---|
| 250 | leftv v = NULL; |
---|
| 251 | if( ! SI_LINK_R_OPEN_P(l)) // open r ? |
---|
| 252 | { |
---|
[fcafdb] | 253 | #ifdef HAVE_DBM |
---|
| 254 | #ifdef USE_GDBM |
---|
| 255 | if (! SI_LINK_CLOSE_P(l)) |
---|
| 256 | { |
---|
[50cbdc] | 257 | if (slClose(l)) return NULL; |
---|
[fcafdb] | 258 | } |
---|
| 259 | #endif |
---|
| 260 | #endif |
---|
[b5f276e] | 261 | if (slOpen(l, SI_LINK_READ,NULL)) return NULL; |
---|
[0e1846] | 262 | } |
---|
[d754b7] | 263 | |
---|
| 264 | if (SI_LINK_R_OPEN_P(l)) |
---|
[0e1846] | 265 | { // open r |
---|
| 266 | if (a==NULL) |
---|
| 267 | { |
---|
[d754b7] | 268 | if (l->m->Read != NULL) v = l->m->Read(l); |
---|
[0e1846] | 269 | } |
---|
| 270 | else |
---|
| 271 | { |
---|
[d754b7] | 272 | if (l->m->Read2 != NULL) v = l->m->Read2(l,a); |
---|
[0e1846] | 273 | } |
---|
| 274 | } |
---|
[d754b7] | 275 | else |
---|
[0e1846] | 276 | { |
---|
[d754b7] | 277 | Werror("read: Error to open link of type %s, mode: %s, name: %s for reading", |
---|
| 278 | l->m->type, l->mode, l->name); |
---|
| 279 | return NULL; |
---|
[0e1846] | 280 | } |
---|
[c20843] | 281 | |
---|
[d754b7] | 282 | // here comes the eval: |
---|
[1fc83c0] | 283 | if (v != NULL) |
---|
[42e60f] | 284 | { |
---|
| 285 | if (v->Eval() && !errorreported) |
---|
| 286 | WerrorS("eval: failed"); |
---|
| 287 | } |
---|
[d754b7] | 288 | else |
---|
| 289 | Werror("read: Error for link of type %s, mode: %s, name: %s", |
---|
| 290 | l->m->type, l->mode, l->name); |
---|
[0e1846] | 291 | return v; |
---|
| 292 | } |
---|
| 293 | |
---|
| 294 | BOOLEAN slWrite(si_link l, leftv v) |
---|
| 295 | { |
---|
[d754b7] | 296 | BOOLEAN res; |
---|
[c20843] | 297 | |
---|
[0e1846] | 298 | if(! SI_LINK_W_OPEN_P(l)) // open w ? |
---|
| 299 | { |
---|
[fcafdb] | 300 | #ifdef HAVE_DBM |
---|
| 301 | #ifdef USE_GDBM |
---|
| 302 | if (! SI_LINK_CLOSE_P(l)) |
---|
| 303 | { |
---|
[50cbdc] | 304 | if (slClose(l)) return TRUE; |
---|
[fcafdb] | 305 | } |
---|
| 306 | #endif |
---|
| 307 | #endif |
---|
[b5f276e] | 308 | if (slOpen(l, SI_LINK_WRITE,NULL)) return TRUE; |
---|
[0e1846] | 309 | } |
---|
[d754b7] | 310 | |
---|
[fcafdb] | 311 | if (SI_LINK_W_OPEN_P(l)) |
---|
[0e1846] | 312 | { // now open w |
---|
[1fc83c0] | 313 | if (l->m->Write != NULL) |
---|
| 314 | res = l->m->Write(l,v); |
---|
| 315 | else |
---|
| 316 | res = TRUE; |
---|
[d754b7] | 317 | |
---|
| 318 | if (res) |
---|
| 319 | Werror("write: Error for link of type %s, mode: %s, name: %s", |
---|
| 320 | l->m->type, l->mode, l->name); |
---|
| 321 | return res; |
---|
| 322 | } |
---|
| 323 | else |
---|
| 324 | { |
---|
| 325 | Werror("write: Error to open link of type %s, mode: %s, name: %s for writing", |
---|
| 326 | l->m->type, l->mode, l->name); |
---|
| 327 | return TRUE; |
---|
[0e1846] | 328 | } |
---|
| 329 | } |
---|
| 330 | |
---|
[286bd57] | 331 | BOOLEAN slDump(si_link l) |
---|
| 332 | { |
---|
[d754b7] | 333 | BOOLEAN res; |
---|
| 334 | |
---|
[286bd57] | 335 | if(! SI_LINK_W_OPEN_P(l)) // open w ? |
---|
| 336 | { |
---|
[b5f276e] | 337 | if (slOpen(l, SI_LINK_WRITE,NULL)) return TRUE; |
---|
[286bd57] | 338 | } |
---|
[d754b7] | 339 | |
---|
| 340 | if(SI_LINK_W_OPEN_P(l)) |
---|
[286bd57] | 341 | { // now open w |
---|
[1fc83c0] | 342 | if (l->m->Dump != NULL) |
---|
| 343 | res = l->m->Dump(l); |
---|
| 344 | else |
---|
| 345 | res = TRUE; |
---|
[286bd57] | 346 | |
---|
[d754b7] | 347 | if (res) |
---|
| 348 | Werror("dump: Error for link of type %s, mode: %s, name: %s", |
---|
| 349 | l->m->type, l->mode, l->name); |
---|
[228e0b] | 350 | if (!SI_LINK_R_OPEN_P(l)) slClose(l); // do not close r/w links |
---|
[d754b7] | 351 | return res; |
---|
[286bd57] | 352 | } |
---|
[d754b7] | 353 | else |
---|
| 354 | { |
---|
| 355 | Werror("dump: Error to open link of type %s, mode: %s, name: %s for writing", |
---|
| 356 | l->m->type, l->mode, l->name); |
---|
| 357 | return TRUE; |
---|
[286bd57] | 358 | } |
---|
| 359 | } |
---|
| 360 | |
---|
[d754b7] | 361 | BOOLEAN slGetDump(si_link l) |
---|
[0e1846] | 362 | { |
---|
[d754b7] | 363 | BOOLEAN res; |
---|
| 364 | |
---|
| 365 | if(! SI_LINK_R_OPEN_P(l)) // open r ? |
---|
[0e1846] | 366 | { |
---|
[b5f276e] | 367 | if (slOpen(l, SI_LINK_READ,NULL)) return TRUE; |
---|
[0e1846] | 368 | } |
---|
[d754b7] | 369 | |
---|
| 370 | if(SI_LINK_R_OPEN_P(l)) |
---|
| 371 | { // now open r |
---|
[1fc83c0] | 372 | if (l->m->GetDump != NULL) |
---|
| 373 | res = l->m->GetDump(l); |
---|
| 374 | else |
---|
| 375 | res = TRUE; |
---|
[d754b7] | 376 | |
---|
| 377 | if (res) |
---|
| 378 | Werror("getdump: Error for link of type %s, mode: %s, name: %s", |
---|
| 379 | l->m->type, l->mode, l->name); |
---|
[6d1357] | 380 | //res|=slClose(l); |
---|
[d754b7] | 381 | return res; |
---|
[0e1846] | 382 | } |
---|
[d754b7] | 383 | else |
---|
[0e1846] | 384 | { |
---|
[d754b7] | 385 | Werror("dump: Error open link of type %s, mode: %s, name: %s for reading", |
---|
| 386 | l->m->type, l->mode, l->name); |
---|
| 387 | return TRUE; |
---|
[0e1846] | 388 | } |
---|
| 389 | } |
---|
[d754b7] | 390 | |
---|
| 391 | /*------------Initialization at Start-up time------------------------*/ |
---|
[0e1846] | 392 | |
---|
[44ca2f] | 393 | #include <Singular/links/slInit.h> |
---|
[0e1846] | 394 | |
---|
[6b32990] | 395 | static si_link_extension slTypeInit(si_link_extension s, const char* type) |
---|
| 396 | { |
---|
| 397 | assume(s != NULL); |
---|
| 398 | s->next = NULL; |
---|
| 399 | si_link_extension ns = (si_link_extension)omAlloc0Bin(s_si_link_extension_bin); |
---|
[50cbdc] | 400 | |
---|
[df326b] | 401 | if (0) 0; // dummy |
---|
[6b32990] | 402 | #ifdef HAVE_DBM |
---|
[8ed989] | 403 | else if (strcmp(type, "DBM") == 0) |
---|
[6b32990] | 404 | s->next = slInitDBMExtension(ns); |
---|
| 405 | #endif |
---|
[8ed989] | 406 | #if 1 |
---|
| 407 | else if (strcmp(type, "ssi") == 0) |
---|
| 408 | s->next = slInitSsiExtension(ns); |
---|
[4082e8] | 409 | #endif |
---|
| 410 | #if 1 |
---|
| 411 | else if (strcmp(type, "|") == 0) |
---|
| 412 | s->next = slInitPipeExtension(ns); |
---|
[c20843] | 413 | #endif |
---|
[8ed989] | 414 | else |
---|
[6b32990] | 415 | { |
---|
| 416 | Warn("Found unknown link type: %s", type); |
---|
| 417 | Warn("Use default link type: %s", si_link_root->type); |
---|
| 418 | omFreeBin(ns, s_si_link_extension_bin); |
---|
| 419 | return si_link_root; |
---|
| 420 | } |
---|
[50cbdc] | 421 | |
---|
[6b32990] | 422 | if (s->next == NULL) |
---|
| 423 | { |
---|
| 424 | Werror("Can not initialize link type %s", type); |
---|
| 425 | omFreeBin(ns, s_si_link_extension_bin); |
---|
| 426 | return NULL; |
---|
| 427 | } |
---|
| 428 | return s->next; |
---|
| 429 | } |
---|
[0e1846] | 430 | |
---|