1 /* vi:set ts=8 sts=4 sw=4 noet: 2 * 3 * CSCOPE support for Vim added by Andy Kahn <[email protected]> 4 * Ported to Win32 by Sergey Khorev <[email protected]> 5 * 6 * The basic idea/structure of cscope for Vim was borrowed from Nvi. There 7 * might be a few lines of code that look similar to what Nvi has. 8 * 9 * See README.txt for an overview of the Vim source code. 10 */ 11 12 #include "vim.h" 13 14 #if defined(FEAT_CSCOPE) || defined(PROTO) 15 16 #include <sys/types.h> 17 #include <sys/stat.h> 18 #if defined(UNIX) 19 # include <sys/wait.h> 20 #endif 21 #include "if_cscope.h" 22 23 static void cs_usage_msg(csid_e x); 24 static int cs_add(exarg_T *eap); 25 static void cs_stat_emsg(char *fname); 26 static int cs_add_common(char *, char *, char *); 27 static int cs_check_for_connections(void); 28 static int cs_check_for_tags(void); 29 static int cs_cnt_connections(void); 30 static void cs_reading_emsg(int idx); 31 static int cs_cnt_matches(int idx); 32 static char * cs_create_cmd(char *csoption, char *pattern); 33 static int cs_create_connection(int i); 34 static void do_cscope_general(exarg_T *eap, int make_split); 35 #ifdef FEAT_QUICKFIX 36 static void cs_file_results(FILE *, int *); 37 #endif 38 static void cs_fill_results(char *, int , int *, char ***, 39 char ***, int *); 40 static int cs_find(exarg_T *eap); 41 static int cs_find_common(char *opt, char *pat, int, int, int, char_u *cmdline); 42 static int cs_help(exarg_T *eap); 43 static void clear_csinfo(int i); 44 static int cs_insert_filelist(char *, char *, char *, 45 stat_T *); 46 static int cs_kill(exarg_T *eap); 47 static void cs_kill_execute(int, char *); 48 static cscmd_T * cs_lookup_cmd(exarg_T *eap); 49 static char * cs_make_vim_style_matches(char *, char *, 50 char *, char *); 51 static char * cs_manage_matches(char **, char **, int, mcmd_e); 52 static char * cs_parse_results(int cnumber, char *buf, int bufsize, char **context, char **linenumber, char **search); 53 static char * cs_pathcomponents(char *path); 54 static void cs_print_tags_priv(char **, char **, int); 55 static int cs_read_prompt(int); 56 static void cs_release_csp(int, int freefnpp); 57 static int cs_reset(exarg_T *eap); 58 static char * cs_resolve_file(int, char *); 59 static int cs_show(exarg_T *eap); 60 61 62 static csinfo_T * csinfo = NULL; 63 static int csinfo_size = 0; /* number of items allocated in 64 csinfo[] */ 65 66 static int eap_arg_len; /* length of eap->arg, set in 67 cs_lookup_cmd() */ 68 static cscmd_T cs_cmds[] = 69 { 70 { "add", cs_add, 71 N_("Add a new database"), "add file|dir [pre-path] [flags]", 0 }, 72 { "find", cs_find, 73 N_("Query for a pattern"), "find a|c|d|e|f|g|i|s|t name", 1 }, 74 { "help", cs_help, 75 N_("Show this message"), "help", 0 }, 76 { "kill", cs_kill, 77 N_("Kill a connection"), "kill #", 0 }, 78 { "reset", cs_reset, 79 N_("Reinit all connections"), "reset", 0 }, 80 { "show", cs_show, 81 N_("Show connections"), "show", 0 }, 82 { NULL, NULL, NULL, NULL, 0 } 83 }; 84 85 static void 86 cs_usage_msg(csid_e x) 87 { 88 (void)EMSG2(_("E560: Usage: cs[cope] %s"), cs_cmds[(int)x].usage); 89 } 90 91 #if defined(FEAT_CMDL_COMPL) || defined(PROTO) 92 93 static enum 94 { 95 EXP_CSCOPE_SUBCMD, /* expand ":cscope" sub-commands */ 96 EXP_SCSCOPE_SUBCMD, /* expand ":scscope" sub-commands */ 97 EXP_CSCOPE_FIND, /* expand ":cscope find" arguments */ 98 EXP_CSCOPE_KILL /* expand ":cscope kill" arguments */ 99 } expand_what; 100 101 /* 102 * Function given to ExpandGeneric() to obtain the cscope command 103 * expansion. 104 */ 105 char_u * 106 get_cscope_name(expand_T *xp UNUSED, int idx) 107 { 108 int current_idx; 109 int i; 110 111 switch (expand_what) 112 { 113 case EXP_CSCOPE_SUBCMD: 114 /* Complete with sub-commands of ":cscope": 115 * add, find, help, kill, reset, show */ 116 return (char_u *)cs_cmds[idx].name; 117 case EXP_SCSCOPE_SUBCMD: 118 /* Complete with sub-commands of ":scscope": same sub-commands as 119 * ":cscope" but skip commands which don't support split windows */ 120 for (i = 0, current_idx = 0; cs_cmds[i].name != NULL; i++) 121 if (cs_cmds[i].cansplit) 122 if (current_idx++ == idx) 123 break; 124 return (char_u *)cs_cmds[i].name; 125 case EXP_CSCOPE_FIND: 126 { 127 const char *query_type[] = 128 { 129 "a", "c", "d", "e", "f", "g", "i", "s", "t", NULL 130 }; 131 132 /* Complete with query type of ":cscope find {query_type}". 133 * {query_type} can be letters (c, d, ... a) or numbers (0, 1, 134 * ..., 9) but only complete with letters, since numbers are 135 * redundant. */ 136 return (char_u *)query_type[idx]; 137 } 138 case EXP_CSCOPE_KILL: 139 { 140 static char connection[5]; 141 142 /* ":cscope kill" accepts connection numbers or partial names of 143 * the pathname of the cscope database as argument. Only complete 144 * with connection numbers. -1 can also be used to kill all 145 * connections. */ 146 for (i = 0, current_idx = 0; i < csinfo_size; i++) 147 { 148 if (csinfo[i].fname == NULL) 149 continue; 150 if (current_idx++ == idx) 151 { 152 vim_snprintf(connection, sizeof(connection), "%d", i); 153 return (char_u *)connection; 154 } 155 } 156 return (current_idx == idx && idx > 0) ? (char_u *)"-1" : NULL; 157 } 158 default: 159 return NULL; 160 } 161 } 162 163 /* 164 * Handle command line completion for :cscope command. 165 */ 166 void 167 set_context_in_cscope_cmd( 168 expand_T *xp, 169 char_u *arg, 170 cmdidx_T cmdidx) 171 { 172 char_u *p; 173 174 /* Default: expand subcommands */ 175 xp->xp_context = EXPAND_CSCOPE; 176 xp->xp_pattern = arg; 177 expand_what = (cmdidx == CMD_scscope) 178 ? EXP_SCSCOPE_SUBCMD : EXP_CSCOPE_SUBCMD; 179 180 /* (part of) subcommand already typed */ 181 if (*arg != NUL) 182 { 183 p = skiptowhite(arg); 184 if (*p != NUL) /* past first word */ 185 { 186 xp->xp_pattern = skipwhite(p); 187 if (*skiptowhite(xp->xp_pattern) != NUL) 188 xp->xp_context = EXPAND_NOTHING; 189 else if (STRNICMP(arg, "add", p - arg) == 0) 190 xp->xp_context = EXPAND_FILES; 191 else if (STRNICMP(arg, "kill", p - arg) == 0) 192 expand_what = EXP_CSCOPE_KILL; 193 else if (STRNICMP(arg, "find", p - arg) == 0) 194 expand_what = EXP_CSCOPE_FIND; 195 else 196 xp->xp_context = EXPAND_NOTHING; 197 } 198 } 199 } 200 201 #endif /* FEAT_CMDL_COMPL */ 202 203 /* 204 * Find the command, print help if invalid, and then call the corresponding 205 * command function. 206 */ 207 static void 208 do_cscope_general( 209 exarg_T *eap, 210 int make_split UNUSED) /* whether to split window */ 211 { 212 cscmd_T *cmdp; 213 214 if ((cmdp = cs_lookup_cmd(eap)) == NULL) 215 { 216 cs_help(eap); 217 return; 218 } 219 220 if (make_split) 221 { 222 if (!cmdp->cansplit) 223 { 224 (void)MSG_PUTS(_("This cscope command does not support splitting the window.\n")); 225 return; 226 } 227 postponed_split = -1; 228 postponed_split_flags = cmdmod.split; 229 postponed_split_tab = cmdmod.tab; 230 } 231 232 cmdp->func(eap); 233 234 postponed_split_flags = 0; 235 postponed_split_tab = 0; 236 } 237 238 /* 239 * Implementation of ":cscope" and ":lcscope" 240 */ 241 void 242 ex_cscope(exarg_T *eap) 243 { 244 do_cscope_general(eap, FALSE); 245 } 246 247 /* 248 * Implementation of ":scscope". Same as ex_cscope(), but splits window, too. 249 */ 250 void 251 ex_scscope(exarg_T *eap) 252 { 253 do_cscope_general(eap, TRUE); 254 } 255 256 /* 257 * Implementation of ":cstag" 258 */ 259 void 260 ex_cstag(exarg_T *eap) 261 { 262 int ret = FALSE; 263 264 if (*eap->arg == NUL) 265 { 266 (void)EMSG(_("E562: Usage: cstag <ident>")); 267 return; 268 } 269 270 switch (p_csto) 271 { 272 case 0 : 273 if (cs_check_for_connections()) 274 { 275 ret = cs_find_common("g", (char *)(eap->arg), eap->forceit, FALSE, 276 FALSE, *eap->cmdlinep); 277 if (ret == FALSE) 278 { 279 cs_free_tags(); 280 if (msg_col) 281 msg_putchar('\n'); 282 283 if (cs_check_for_tags()) 284 ret = do_tag(eap->arg, DT_JUMP, 0, eap->forceit, FALSE); 285 } 286 } 287 else if (cs_check_for_tags()) 288 { 289 ret = do_tag(eap->arg, DT_JUMP, 0, eap->forceit, FALSE); 290 } 291 break; 292 case 1 : 293 if (cs_check_for_tags()) 294 { 295 ret = do_tag(eap->arg, DT_JUMP, 0, eap->forceit, FALSE); 296 if (ret == FALSE) 297 { 298 if (msg_col) 299 msg_putchar('\n'); 300 301 if (cs_check_for_connections()) 302 { 303 ret = cs_find_common("g", (char *)(eap->arg), eap->forceit, 304 FALSE, FALSE, *eap->cmdlinep); 305 if (ret == FALSE) 306 cs_free_tags(); 307 } 308 } 309 } 310 else if (cs_check_for_connections()) 311 { 312 ret = cs_find_common("g", (char *)(eap->arg), eap->forceit, FALSE, 313 FALSE, *eap->cmdlinep); 314 if (ret == FALSE) 315 cs_free_tags(); 316 } 317 break; 318 default : 319 break; 320 } 321 322 if (!ret) 323 { 324 (void)EMSG(_("E257: cstag: tag not found")); 325 #if defined(FEAT_QUICKFIX) 326 g_do_tagpreview = 0; 327 #endif 328 } 329 330 } 331 332 333 /* 334 * This simulates a vim_fgets(), but for cscope, returns the next line 335 * from the cscope output. should only be called from find_tags() 336 * 337 * returns TRUE if eof, FALSE otherwise 338 */ 339 int 340 cs_fgets(char_u *buf, int size) 341 { 342 char *p; 343 344 if ((p = cs_manage_matches(NULL, NULL, -1, Get)) == NULL) 345 return TRUE; 346 vim_strncpy(buf, (char_u *)p, size - 1); 347 348 return FALSE; 349 } /* cs_fgets */ 350 351 352 /* 353 * Called only from do_tag(), when popping the tag stack. 354 */ 355 void 356 cs_free_tags(void) 357 { 358 cs_manage_matches(NULL, NULL, -1, Free); 359 } 360 361 362 /* 363 * Called from do_tag(). 364 */ 365 void 366 cs_print_tags(void) 367 { 368 cs_manage_matches(NULL, NULL, -1, Print); 369 } 370 371 372 /* 373 * "cscope_connection([{num} , {dbpath} [, {prepend}]])" function 374 * 375 * Checks for the existence of a |cscope| connection. If no 376 * parameters are specified, then the function returns: 377 * 378 * 0, if cscope was not available (not compiled in), or if there 379 * are no cscope connections; or 380 * 1, if there is at least one cscope connection. 381 * 382 * If parameters are specified, then the value of {num} 383 * determines how existence of a cscope connection is checked: 384 * 385 * {num} Description of existence check 386 * ----- ------------------------------ 387 * 0 Same as no parameters (e.g., "cscope_connection()"). 388 * 1 Ignore {prepend}, and use partial string matches for 389 * {dbpath}. 390 * 2 Ignore {prepend}, and use exact string matches for 391 * {dbpath}. 392 * 3 Use {prepend}, use partial string matches for both 393 * {dbpath} and {prepend}. 394 * 4 Use {prepend}, use exact string matches for both 395 * {dbpath} and {prepend}. 396 * 397 * Note: All string comparisons are case sensitive! 398 */ 399 #if defined(FEAT_EVAL) || defined(PROTO) 400 int 401 cs_connection(int num, char_u *dbpath, char_u *ppath) 402 { 403 int i; 404 405 if (num < 0 || num > 4 || (num > 0 && !dbpath)) 406 return FALSE; 407 408 for (i = 0; i < csinfo_size; i++) 409 { 410 if (!csinfo[i].fname) 411 continue; 412 413 if (num == 0) 414 return TRUE; 415 416 switch (num) 417 { 418 case 1: 419 if (strstr(csinfo[i].fname, (char *)dbpath)) 420 return TRUE; 421 break; 422 case 2: 423 if (strcmp(csinfo[i].fname, (char *)dbpath) == 0) 424 return TRUE; 425 break; 426 case 3: 427 if (strstr(csinfo[i].fname, (char *)dbpath) 428 && ((!ppath && !csinfo[i].ppath) 429 || (ppath 430 && csinfo[i].ppath 431 && strstr(csinfo[i].ppath, (char *)ppath)))) 432 return TRUE; 433 break; 434 case 4: 435 if ((strcmp(csinfo[i].fname, (char *)dbpath) == 0) 436 && ((!ppath && !csinfo[i].ppath) 437 || (ppath 438 && csinfo[i].ppath 439 && (strcmp(csinfo[i].ppath, (char *)ppath) == 0)))) 440 return TRUE; 441 break; 442 } 443 } 444 445 return FALSE; 446 } /* cs_connection */ 447 #endif 448 449 450 /* 451 * PRIVATE functions 452 ****************************************************************************/ 453 454 /* 455 * Add cscope database or a directory name (to look for cscope.out) 456 * to the cscope connection list. 457 */ 458 static int 459 cs_add(exarg_T *eap UNUSED) 460 { 461 char *fname, *ppath, *flags = NULL; 462 463 if ((fname = strtok((char *)NULL, (const char *)" ")) == NULL) 464 { 465 cs_usage_msg(Add); 466 return CSCOPE_FAILURE; 467 } 468 if ((ppath = strtok((char *)NULL, (const char *)" ")) != NULL) 469 flags = strtok((char *)NULL, (const char *)" "); 470 471 return cs_add_common(fname, ppath, flags); 472 } 473 474 static void 475 cs_stat_emsg(char *fname) 476 { 477 char *stat_emsg = _("E563: stat(%s) error: %d"); 478 char *buf = (char *)alloc((unsigned)strlen(stat_emsg) + MAXPATHL + 10); 479 480 if (buf != NULL) 481 { 482 (void)sprintf(buf, stat_emsg, fname, errno); 483 (void)EMSG(buf); 484 vim_free(buf); 485 } 486 else 487 (void)EMSG(_("E563: stat error")); 488 } 489 490 491 /* 492 * The common routine to add a new cscope connection. Called by 493 * cs_add() and cs_reset(). I really don't like to do this, but this 494 * routine uses a number of goto statements. 495 */ 496 static int 497 cs_add_common( 498 char *arg1, /* filename - may contain environment variables */ 499 char *arg2, /* prepend path - may contain environment variables */ 500 char *flags) 501 { 502 stat_T statbuf; 503 int ret; 504 char *fname = NULL; 505 char *fname2 = NULL; 506 char *ppath = NULL; 507 int i; 508 #ifdef FEAT_MODIFY_FNAME 509 int len; 510 int usedlen = 0; 511 char_u *fbuf = NULL; 512 #endif 513 514 /* get the filename (arg1), expand it, and try to stat it */ 515 if ((fname = (char *)alloc(MAXPATHL + 1)) == NULL) 516 goto add_err; 517 518 expand_env((char_u *)arg1, (char_u *)fname, MAXPATHL); 519 #ifdef FEAT_MODIFY_FNAME 520 len = (int)STRLEN(fname); 521 fbuf = (char_u *)fname; 522 (void)modify_fname((char_u *)":p", FALSE, &usedlen, 523 (char_u **)&fname, &fbuf, &len); 524 if (fname == NULL) 525 goto add_err; 526 fname = (char *)vim_strnsave((char_u *)fname, len); 527 vim_free(fbuf); 528 #endif 529 ret = mch_stat(fname, &statbuf); 530 if (ret < 0) 531 { 532 staterr: 533 if (p_csverbose) 534 cs_stat_emsg(fname); 535 goto add_err; 536 } 537 538 /* get the prepend path (arg2), expand it, and try to stat it */ 539 if (arg2 != NULL) 540 { 541 stat_T statbuf2; 542 543 if ((ppath = (char *)alloc(MAXPATHL + 1)) == NULL) 544 goto add_err; 545 546 expand_env((char_u *)arg2, (char_u *)ppath, MAXPATHL); 547 ret = mch_stat(ppath, &statbuf2); 548 if (ret < 0) 549 goto staterr; 550 } 551 552 /* if filename is a directory, append the cscope database name to it */ 553 if (S_ISDIR(statbuf.st_mode)) 554 { 555 fname2 = (char *)alloc((unsigned)(strlen(CSCOPE_DBFILE) + strlen(fname) + 2)); 556 if (fname2 == NULL) 557 goto add_err; 558 559 while (fname[strlen(fname)-1] == '/' 560 #ifdef WIN32 561 || fname[strlen(fname)-1] == '\\' 562 #endif 563 ) 564 { 565 fname[strlen(fname)-1] = '\0'; 566 if (fname[0] == '\0') 567 break; 568 } 569 if (fname[0] == '\0') 570 (void)sprintf(fname2, "/%s", CSCOPE_DBFILE); 571 else 572 (void)sprintf(fname2, "%s/%s", fname, CSCOPE_DBFILE); 573 574 ret = mch_stat(fname2, &statbuf); 575 if (ret < 0) 576 { 577 if (p_csverbose) 578 cs_stat_emsg(fname2); 579 goto add_err; 580 } 581 582 i = cs_insert_filelist(fname2, ppath, flags, &statbuf); 583 } 584 else if (S_ISREG(statbuf.st_mode) || S_ISLNK(statbuf.st_mode)) 585 { 586 i = cs_insert_filelist(fname, ppath, flags, &statbuf); 587 } 588 else 589 { 590 if (p_csverbose) 591 (void)EMSG2( 592 _("E564: %s is not a directory or a valid cscope database"), 593 fname); 594 goto add_err; 595 } 596 597 if (i != -1) 598 { 599 if (cs_create_connection(i) == CSCOPE_FAILURE 600 || cs_read_prompt(i) == CSCOPE_FAILURE) 601 { 602 cs_release_csp(i, TRUE); 603 goto add_err; 604 } 605 606 if (p_csverbose) 607 { 608 msg_clr_eos(); 609 (void)smsg_attr(HL_ATTR(HLF_R), 610 (char_u *)_("Added cscope database %s"), 611 csinfo[i].fname); 612 } 613 } 614 615 vim_free(fname); 616 vim_free(fname2); 617 vim_free(ppath); 618 return CSCOPE_SUCCESS; 619 620 add_err: 621 vim_free(fname2); 622 vim_free(fname); 623 vim_free(ppath); 624 return CSCOPE_FAILURE; 625 } /* cs_add_common */ 626 627 628 static int 629 cs_check_for_connections(void) 630 { 631 return (cs_cnt_connections() > 0); 632 } /* cs_check_for_connections */ 633 634 635 static int 636 cs_check_for_tags(void) 637 { 638 return (p_tags[0] != NUL && curbuf->b_p_tags != NULL); 639 } /* cs_check_for_tags */ 640 641 642 /* 643 * Count the number of cscope connections. 644 */ 645 static int 646 cs_cnt_connections(void) 647 { 648 short i; 649 short cnt = 0; 650 651 for (i = 0; i < csinfo_size; i++) 652 { 653 if (csinfo[i].fname != NULL) 654 cnt++; 655 } 656 return cnt; 657 } /* cs_cnt_connections */ 658 659 static void 660 cs_reading_emsg( 661 int idx) /* connection index */ 662 { 663 EMSGN(_("E262: error reading cscope connection %ld"), idx); 664 } 665 666 #define CSREAD_BUFSIZE 2048 667 /* 668 * Count the number of matches for a given cscope connection. 669 */ 670 static int 671 cs_cnt_matches(int idx) 672 { 673 char *stok; 674 char *buf; 675 int nlines = 0; 676 677 buf = (char *)alloc(CSREAD_BUFSIZE); 678 if (buf == NULL) 679 return 0; 680 for (;;) 681 { 682 if (!fgets(buf, CSREAD_BUFSIZE, csinfo[idx].fr_fp)) 683 { 684 if (feof(csinfo[idx].fr_fp)) 685 errno = EIO; 686 687 cs_reading_emsg(idx); 688 689 vim_free(buf); 690 return -1; 691 } 692 693 /* 694 * If the database is out of date, or there's some other problem, 695 * cscope will output error messages before the number-of-lines output. 696 * Display/discard any output that doesn't match what we want. 697 * Accept "\S*cscope: X lines", also matches "mlcscope". 698 * Bail out for the "Unable to search" error. 699 */ 700 if (strstr((const char *)buf, "Unable to search database") != NULL) 701 break; 702 if ((stok = strtok(buf, (const char *)" ")) == NULL) 703 continue; 704 if (strstr((const char *)stok, "cscope:") == NULL) 705 continue; 706 707 if ((stok = strtok(NULL, (const char *)" ")) == NULL) 708 continue; 709 nlines = atoi(stok); 710 if (nlines < 0) 711 { 712 nlines = 0; 713 break; 714 } 715 716 if ((stok = strtok(NULL, (const char *)" ")) == NULL) 717 continue; 718 if (strncmp((const char *)stok, "lines", 5)) 719 continue; 720 721 break; 722 } 723 724 vim_free(buf); 725 return nlines; 726 } /* cs_cnt_matches */ 727 728 729 /* 730 * Creates the actual cscope command query from what the user entered. 731 */ 732 static char * 733 cs_create_cmd(char *csoption, char *pattern) 734 { 735 char *cmd; 736 short search; 737 char *pat; 738 739 switch (csoption[0]) 740 { 741 case '0' : case 's' : 742 search = 0; 743 break; 744 case '1' : case 'g' : 745 search = 1; 746 break; 747 case '2' : case 'd' : 748 search = 2; 749 break; 750 case '3' : case 'c' : 751 search = 3; 752 break; 753 case '4' : case 't' : 754 search = 4; 755 break; 756 case '6' : case 'e' : 757 search = 6; 758 break; 759 case '7' : case 'f' : 760 search = 7; 761 break; 762 case '8' : case 'i' : 763 search = 8; 764 break; 765 case '9' : case 'a' : 766 search = 9; 767 break; 768 default : 769 (void)EMSG(_("E561: unknown cscope search type")); 770 cs_usage_msg(Find); 771 return NULL; 772 } 773 774 /* Skip white space before the patter, except for text and pattern search, 775 * they may want to use the leading white space. */ 776 pat = pattern; 777 if (search != 4 && search != 6) 778 while VIM_ISWHITE(*pat) 779 ++pat; 780 781 if ((cmd = (char *)alloc((unsigned)(strlen(pat) + 2))) == NULL) 782 return NULL; 783 784 (void)sprintf(cmd, "%d%s", search, pat); 785 786 return cmd; 787 } /* cs_create_cmd */ 788 789 790 /* 791 * This piece of code was taken/adapted from nvi. do we need to add 792 * the BSD license notice? 793 */ 794 static int 795 cs_create_connection(int i) 796 { 797 #ifdef UNIX 798 int to_cs[2], from_cs[2]; 799 #endif 800 int len; 801 char *prog, *cmd, *ppath = NULL; 802 #ifdef WIN32 803 int fd; 804 SECURITY_ATTRIBUTES sa; 805 PROCESS_INFORMATION pi; 806 STARTUPINFO si; 807 BOOL pipe_stdin = FALSE, pipe_stdout = FALSE; 808 HANDLE stdin_rd, stdout_rd; 809 HANDLE stdout_wr, stdin_wr; 810 BOOL created; 811 # if (defined(_MSC_VER) && (_MSC_VER >= 1300)) || defined(__MINGW32__) 812 # define OPEN_OH_ARGTYPE intptr_t 813 # else 814 # define OPEN_OH_ARGTYPE long 815 # endif 816 #endif 817 818 #if defined(UNIX) 819 /* 820 * Cscope reads from to_cs[0] and writes to from_cs[1]; vi reads from 821 * from_cs[0] and writes to to_cs[1]. 822 */ 823 to_cs[0] = to_cs[1] = from_cs[0] = from_cs[1] = -1; 824 if (pipe(to_cs) < 0 || pipe(from_cs) < 0) 825 { 826 (void)EMSG(_("E566: Could not create cscope pipes")); 827 err_closing: 828 if (to_cs[0] != -1) 829 (void)close(to_cs[0]); 830 if (to_cs[1] != -1) 831 (void)close(to_cs[1]); 832 if (from_cs[0] != -1) 833 (void)close(from_cs[0]); 834 if (from_cs[1] != -1) 835 (void)close(from_cs[1]); 836 return CSCOPE_FAILURE; 837 } 838 839 switch (csinfo[i].pid = fork()) 840 { 841 case -1: 842 (void)EMSG(_("E622: Could not fork for cscope")); 843 goto err_closing; 844 case 0: /* child: run cscope. */ 845 if (dup2(to_cs[0], STDIN_FILENO) == -1) 846 PERROR("cs_create_connection 1"); 847 if (dup2(from_cs[1], STDOUT_FILENO) == -1) 848 PERROR("cs_create_connection 2"); 849 if (dup2(from_cs[1], STDERR_FILENO) == -1) 850 PERROR("cs_create_connection 3"); 851 852 /* close unused */ 853 (void)close(to_cs[1]); 854 (void)close(from_cs[0]); 855 #else 856 /* WIN32 */ 857 /* Create pipes to communicate with cscope */ 858 sa.nLength = sizeof(SECURITY_ATTRIBUTES); 859 sa.bInheritHandle = TRUE; 860 sa.lpSecurityDescriptor = NULL; 861 862 if (!(pipe_stdin = CreatePipe(&stdin_rd, &stdin_wr, &sa, 0)) 863 || !(pipe_stdout = CreatePipe(&stdout_rd, &stdout_wr, &sa, 0))) 864 { 865 (void)EMSG(_("E566: Could not create cscope pipes")); 866 err_closing: 867 if (pipe_stdin) 868 { 869 CloseHandle(stdin_rd); 870 CloseHandle(stdin_wr); 871 } 872 if (pipe_stdout) 873 { 874 CloseHandle(stdout_rd); 875 CloseHandle(stdout_wr); 876 } 877 return CSCOPE_FAILURE; 878 } 879 #endif 880 /* expand the cscope exec for env var's */ 881 if ((prog = (char *)alloc(MAXPATHL + 1)) == NULL) 882 { 883 #ifdef UNIX 884 return CSCOPE_FAILURE; 885 #else 886 /* WIN32 */ 887 goto err_closing; 888 #endif 889 } 890 expand_env((char_u *)p_csprg, (char_u *)prog, MAXPATHL); 891 892 /* alloc space to hold the cscope command */ 893 len = (int)(strlen(prog) + strlen(csinfo[i].fname) + 32); 894 if (csinfo[i].ppath) 895 { 896 /* expand the prepend path for env var's */ 897 if ((ppath = (char *)alloc(MAXPATHL + 1)) == NULL) 898 { 899 vim_free(prog); 900 #ifdef UNIX 901 return CSCOPE_FAILURE; 902 #else 903 /* WIN32 */ 904 goto err_closing; 905 #endif 906 } 907 expand_env((char_u *)csinfo[i].ppath, (char_u *)ppath, MAXPATHL); 908 909 len += (int)strlen(ppath); 910 } 911 912 if (csinfo[i].flags) 913 len += (int)strlen(csinfo[i].flags); 914 915 if ((cmd = (char *)alloc(len)) == NULL) 916 { 917 vim_free(prog); 918 vim_free(ppath); 919 #ifdef UNIX 920 return CSCOPE_FAILURE; 921 #else 922 /* WIN32 */ 923 goto err_closing; 924 #endif 925 } 926 927 /* run the cscope command; is there execl for non-unix systems? */ 928 #if defined(UNIX) 929 (void)sprintf(cmd, "exec %s -dl -f %s", prog, csinfo[i].fname); 930 #else 931 /* WIN32 */ 932 (void)sprintf(cmd, "%s -dl -f %s", prog, csinfo[i].fname); 933 #endif 934 if (csinfo[i].ppath != NULL) 935 { 936 (void)strcat(cmd, " -P"); 937 (void)strcat(cmd, csinfo[i].ppath); 938 } 939 if (csinfo[i].flags != NULL) 940 { 941 (void)strcat(cmd, " "); 942 (void)strcat(cmd, csinfo[i].flags); 943 } 944 # ifdef UNIX 945 /* on Win32 we still need prog */ 946 vim_free(prog); 947 # endif 948 vim_free(ppath); 949 950 #if defined(UNIX) 951 # if defined(HAVE_SETSID) || defined(HAVE_SETPGID) 952 /* Change our process group to avoid cscope receiving SIGWINCH. */ 953 # if defined(HAVE_SETSID) 954 (void)setsid(); 955 # else 956 if (setpgid(0, 0) == -1) 957 PERROR(_("cs_create_connection setpgid failed")); 958 # endif 959 # endif 960 if (execl("/bin/sh", "sh", "-c", cmd, (char *)NULL) == -1) 961 PERROR(_("cs_create_connection exec failed")); 962 963 exit(127); 964 /* NOTREACHED */ 965 default: /* parent. */ 966 /* 967 * Save the file descriptors for later duplication, and 968 * reopen as streams. 969 */ 970 if ((csinfo[i].to_fp = fdopen(to_cs[1], "w")) == NULL) 971 PERROR(_("cs_create_connection: fdopen for to_fp failed")); 972 if ((csinfo[i].fr_fp = fdopen(from_cs[0], "r")) == NULL) 973 PERROR(_("cs_create_connection: fdopen for fr_fp failed")); 974 975 /* close unused */ 976 (void)close(to_cs[0]); 977 (void)close(from_cs[1]); 978 979 break; 980 } 981 982 #else 983 /* WIN32 */ 984 /* Create a new process to run cscope and use pipes to talk with it */ 985 GetStartupInfo(&si); 986 si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; 987 si.wShowWindow = SW_HIDE; /* Hide child application window */ 988 si.hStdOutput = stdout_wr; 989 si.hStdError = stdout_wr; 990 si.hStdInput = stdin_rd; 991 created = CreateProcess(NULL, cmd, NULL, NULL, TRUE, CREATE_NEW_CONSOLE, 992 NULL, NULL, &si, &pi); 993 vim_free(prog); 994 vim_free(cmd); 995 996 if (!created) 997 { 998 PERROR(_("cs_create_connection exec failed")); 999 (void)EMSG(_("E623: Could not spawn cscope process")); 1000 goto err_closing; 1001 } 1002 /* else */ 1003 csinfo[i].pid = pi.dwProcessId; 1004 csinfo[i].hProc = pi.hProcess; 1005 CloseHandle(pi.hThread); 1006 1007 /* TODO - tidy up after failure to create files on pipe handles. */ 1008 if (((fd = _open_osfhandle((OPEN_OH_ARGTYPE)stdin_wr, 1009 _O_TEXT|_O_APPEND)) < 0) 1010 || ((csinfo[i].to_fp = _fdopen(fd, "w")) == NULL)) 1011 PERROR(_("cs_create_connection: fdopen for to_fp failed")); 1012 if (((fd = _open_osfhandle((OPEN_OH_ARGTYPE)stdout_rd, 1013 _O_TEXT|_O_RDONLY)) < 0) 1014 || ((csinfo[i].fr_fp = _fdopen(fd, "r")) == NULL)) 1015 PERROR(_("cs_create_connection: fdopen for fr_fp failed")); 1016 1017 /* Close handles for file descriptors inherited by the cscope process */ 1018 CloseHandle(stdin_rd); 1019 CloseHandle(stdout_wr); 1020 1021 #endif /* !UNIX */ 1022 1023 return CSCOPE_SUCCESS; 1024 } /* cs_create_connection */ 1025 1026 1027 /* 1028 * Query cscope using command line interface. Parse the output and use tselect 1029 * to allow choices. Like Nvi, creates a pipe to send to/from query/cscope. 1030 * 1031 * returns TRUE if we jump to a tag or abort, FALSE if not. 1032 */ 1033 static int 1034 cs_find(exarg_T *eap) 1035 { 1036 char *opt, *pat; 1037 int i; 1038 1039 if (cs_check_for_connections() == FALSE) 1040 { 1041 (void)EMSG(_("E567: no cscope connections")); 1042 return FALSE; 1043 } 1044 1045 if ((opt = strtok((char *)NULL, (const char *)" ")) == NULL) 1046 { 1047 cs_usage_msg(Find); 1048 return FALSE; 1049 } 1050 1051 pat = opt + strlen(opt) + 1; 1052 if (pat >= (char *)eap->arg + eap_arg_len) 1053 { 1054 cs_usage_msg(Find); 1055 return FALSE; 1056 } 1057 1058 /* 1059 * Let's replace the NULs written by strtok() with spaces - we need the 1060 * spaces to correctly display the quickfix/location list window's title. 1061 */ 1062 for (i = 0; i < eap_arg_len; ++i) 1063 if (NUL == eap->arg[i]) 1064 eap->arg[i] = ' '; 1065 1066 return cs_find_common(opt, pat, eap->forceit, TRUE, 1067 eap->cmdidx == CMD_lcscope, *eap->cmdlinep); 1068 } /* cs_find */ 1069 1070 1071 /* 1072 * Common code for cscope find, shared by cs_find() and ex_cstag(). 1073 */ 1074 static int 1075 cs_find_common( 1076 char *opt, 1077 char *pat, 1078 int forceit, 1079 int verbose, 1080 int use_ll UNUSED, 1081 char_u *cmdline UNUSED) 1082 { 1083 int i; 1084 char *cmd; 1085 int *nummatches; 1086 int totmatches; 1087 #ifdef FEAT_QUICKFIX 1088 char cmdletter; 1089 char *qfpos; 1090 1091 /* get cmd letter */ 1092 switch (opt[0]) 1093 { 1094 case '0' : 1095 cmdletter = 's'; 1096 break; 1097 case '1' : 1098 cmdletter = 'g'; 1099 break; 1100 case '2' : 1101 cmdletter = 'd'; 1102 break; 1103 case '3' : 1104 cmdletter = 'c'; 1105 break; 1106 case '4' : 1107 cmdletter = 't'; 1108 break; 1109 case '6' : 1110 cmdletter = 'e'; 1111 break; 1112 case '7' : 1113 cmdletter = 'f'; 1114 break; 1115 case '8' : 1116 cmdletter = 'i'; 1117 break; 1118 case '9' : 1119 cmdletter = 'a'; 1120 break; 1121 default : 1122 cmdletter = opt[0]; 1123 } 1124 1125 qfpos = (char *)vim_strchr(p_csqf, cmdletter); 1126 if (qfpos != NULL) 1127 { 1128 qfpos++; 1129 /* next symbol must be + or - */ 1130 if (strchr(CSQF_FLAGS, *qfpos) == NULL) 1131 { 1132 char *nf = _("E469: invalid cscopequickfix flag %c for %c"); 1133 char *buf = (char *)alloc((unsigned)strlen(nf)); 1134 1135 /* strlen will be enough because we use chars */ 1136 if (buf != NULL) 1137 { 1138 sprintf(buf, nf, *qfpos, *(qfpos-1)); 1139 (void)EMSG(buf); 1140 vim_free(buf); 1141 } 1142 return FALSE; 1143 } 1144 1145 if (*qfpos != '0' 1146 && apply_autocmds(EVENT_QUICKFIXCMDPRE, (char_u *)"cscope", 1147 curbuf->b_fname, TRUE, curbuf)) 1148 { 1149 # ifdef FEAT_EVAL 1150 if (aborting()) 1151 return FALSE; 1152 # endif 1153 } 1154 } 1155 #endif 1156 1157 /* create the actual command to send to cscope */ 1158 cmd = cs_create_cmd(opt, pat); 1159 if (cmd == NULL) 1160 return FALSE; 1161 1162 nummatches = (int *)alloc(sizeof(int)*csinfo_size); 1163 if (nummatches == NULL) 1164 { 1165 vim_free(cmd); 1166 return FALSE; 1167 } 1168 1169 /* Send query to all open connections, then count the total number 1170 * of matches so we can alloc all in one swell foop. */ 1171 for (i = 0; i < csinfo_size; i++) 1172 nummatches[i] = 0; 1173 totmatches = 0; 1174 for (i = 0; i < csinfo_size; i++) 1175 { 1176 if (csinfo[i].fname == NULL || csinfo[i].to_fp == NULL) 1177 continue; 1178 1179 /* send cmd to cscope */ 1180 (void)fprintf(csinfo[i].to_fp, "%s\n", cmd); 1181 (void)fflush(csinfo[i].to_fp); 1182 1183 nummatches[i] = cs_cnt_matches(i); 1184 1185 if (nummatches[i] > -1) 1186 totmatches += nummatches[i]; 1187 1188 if (nummatches[i] == 0) 1189 (void)cs_read_prompt(i); 1190 } 1191 vim_free(cmd); 1192 1193 if (totmatches == 0) 1194 { 1195 char *nf = _("E259: no matches found for cscope query %s of %s"); 1196 char *buf; 1197 1198 if (!verbose) 1199 { 1200 vim_free(nummatches); 1201 return FALSE; 1202 } 1203 1204 buf = (char *)alloc((unsigned)(strlen(opt) + strlen(pat) + strlen(nf))); 1205 if (buf == NULL) 1206 (void)EMSG(nf); 1207 else 1208 { 1209 sprintf(buf, nf, opt, pat); 1210 (void)EMSG(buf); 1211 vim_free(buf); 1212 } 1213 vim_free(nummatches); 1214 return FALSE; 1215 } 1216 1217 #ifdef FEAT_QUICKFIX 1218 if (qfpos != NULL && *qfpos != '0' && totmatches > 0) 1219 { 1220 /* fill error list */ 1221 FILE *f; 1222 char_u *tmp = vim_tempname('c', TRUE); 1223 qf_info_T *qi = NULL; 1224 win_T *wp = NULL; 1225 1226 f = mch_fopen((char *)tmp, "w"); 1227 if (f == NULL) 1228 EMSG2(_(e_notopen), tmp); 1229 else 1230 { 1231 cs_file_results(f, nummatches); 1232 fclose(f); 1233 if (use_ll) /* Use location list */ 1234 wp = curwin; 1235 /* '-' starts a new error list */ 1236 if (qf_init(wp, tmp, (char_u *)"%f%*\\t%l%*\\t%m", 1237 *qfpos == '-', cmdline, NULL) > 0) 1238 { 1239 if (postponed_split != 0) 1240 { 1241 (void)win_split(postponed_split > 0 ? postponed_split : 0, 1242 postponed_split_flags); 1243 RESET_BINDING(curwin); 1244 postponed_split = 0; 1245 } 1246 1247 apply_autocmds(EVENT_QUICKFIXCMDPOST, (char_u *)"cscope", 1248 curbuf->b_fname, TRUE, curbuf); 1249 if (use_ll) 1250 /* 1251 * In the location list window, use the displayed location 1252 * list. Otherwise, use the location list for the window. 1253 */ 1254 qi = (bt_quickfix(wp->w_buffer) && wp->w_llist_ref != NULL) 1255 ? wp->w_llist_ref : wp->w_llist; 1256 qf_jump(qi, 0, 0, forceit); 1257 } 1258 } 1259 mch_remove(tmp); 1260 vim_free(tmp); 1261 vim_free(nummatches); 1262 return TRUE; 1263 } 1264 else 1265 #endif /* FEAT_QUICKFIX */ 1266 { 1267 char **matches = NULL, **contexts = NULL; 1268 int matched = 0; 1269 1270 /* read output */ 1271 cs_fill_results((char *)pat, totmatches, nummatches, &matches, 1272 &contexts, &matched); 1273 vim_free(nummatches); 1274 if (matches == NULL) 1275 return FALSE; 1276 1277 (void)cs_manage_matches(matches, contexts, matched, Store); 1278 1279 return do_tag((char_u *)pat, DT_CSCOPE, 0, forceit, verbose); 1280 } 1281 1282 } /* cs_find_common */ 1283 1284 /* 1285 * Print help. 1286 */ 1287 static int 1288 cs_help(exarg_T *eap UNUSED) 1289 { 1290 cscmd_T *cmdp = cs_cmds; 1291 1292 (void)MSG_PUTS(_("cscope commands:\n")); 1293 while (cmdp->name != NULL) 1294 { 1295 char *help = _(cmdp->help); 1296 int space_cnt = 30 - vim_strsize((char_u *)help); 1297 1298 /* Use %*s rather than %30s to ensure proper alignment in utf-8 */ 1299 if (space_cnt < 0) 1300 space_cnt = 0; 1301 (void)smsg((char_u *)_("%-5s: %s%*s (Usage: %s)"), 1302 cmdp->name, 1303 help, space_cnt, " ", 1304 cmdp->usage); 1305 if (strcmp(cmdp->name, "find") == 0) 1306 MSG_PUTS(_("\n" 1307 " a: Find assignments to this symbol\n" 1308 " c: Find functions calling this function\n" 1309 " d: Find functions called by this function\n" 1310 " e: Find this egrep pattern\n" 1311 " f: Find this file\n" 1312 " g: Find this definition\n" 1313 " i: Find files #including this file\n" 1314 " s: Find this C symbol\n" 1315 " t: Find this text string\n")); 1316 1317 cmdp++; 1318 } 1319 1320 wait_return(TRUE); 1321 return 0; 1322 } /* cs_help */ 1323 1324 1325 static void 1326 clear_csinfo(int i) 1327 { 1328 csinfo[i].fname = NULL; 1329 csinfo[i].ppath = NULL; 1330 csinfo[i].flags = NULL; 1331 #if defined(UNIX) 1332 csinfo[i].st_dev = (dev_t)0; 1333 csinfo[i].st_ino = (ino_t)0; 1334 #else 1335 csinfo[i].nVolume = 0; 1336 csinfo[i].nIndexHigh = 0; 1337 csinfo[i].nIndexLow = 0; 1338 #endif 1339 csinfo[i].pid = 0; 1340 csinfo[i].fr_fp = NULL; 1341 csinfo[i].to_fp = NULL; 1342 #if defined(WIN32) 1343 csinfo[i].hProc = NULL; 1344 #endif 1345 } 1346 1347 #ifndef UNIX 1348 static char *GetWin32Error(void); 1349 1350 static char * 1351 GetWin32Error(void) 1352 { 1353 char *msg = NULL; 1354 FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM, 1355 NULL, GetLastError(), 0, (LPSTR)&msg, 0, NULL); 1356 if (msg != NULL) 1357 { 1358 /* remove trailing \r\n */ 1359 char *pcrlf = strstr(msg, "\r\n"); 1360 if (pcrlf != NULL) 1361 *pcrlf = '\0'; 1362 } 1363 return msg; 1364 } 1365 #endif 1366 1367 /* 1368 * Insert a new cscope database filename into the filelist. 1369 */ 1370 static int 1371 cs_insert_filelist( 1372 char *fname, 1373 char *ppath, 1374 char *flags, 1375 stat_T *sb UNUSED) 1376 { 1377 short i, j; 1378 #ifndef UNIX 1379 BY_HANDLE_FILE_INFORMATION bhfi; 1380 1381 switch (win32_fileinfo((char_u *)fname, &bhfi)) 1382 { 1383 case FILEINFO_ENC_FAIL: /* enc_to_utf16() failed */ 1384 case FILEINFO_READ_FAIL: /* CreateFile() failed */ 1385 if (p_csverbose) 1386 { 1387 char *cant_msg = _("E625: cannot open cscope database: %s"); 1388 char *winmsg = GetWin32Error(); 1389 1390 if (winmsg != NULL) 1391 { 1392 (void)EMSG2(cant_msg, winmsg); 1393 LocalFree(winmsg); 1394 } 1395 else 1396 /* subst filename if can't get error text */ 1397 (void)EMSG2(cant_msg, fname); 1398 } 1399 return -1; 1400 1401 case FILEINFO_INFO_FAIL: /* GetFileInformationByHandle() failed */ 1402 if (p_csverbose) 1403 (void)EMSG(_("E626: cannot get cscope database information")); 1404 return -1; 1405 } 1406 #endif 1407 1408 i = -1; /* can be set to the index of an empty item in csinfo */ 1409 for (j = 0; j < csinfo_size; j++) 1410 { 1411 if (csinfo[j].fname != NULL 1412 #if defined(UNIX) 1413 && csinfo[j].st_dev == sb->st_dev && csinfo[j].st_ino == sb->st_ino 1414 #else 1415 /* compare pathnames first */ 1416 && ((fullpathcmp((char_u *)csinfo[j].fname, 1417 (char_u *)fname, FALSE) & FPC_SAME) 1418 /* test index file attributes too */ 1419 || (csinfo[j].nVolume == bhfi.dwVolumeSerialNumber 1420 && csinfo[j].nIndexHigh == bhfi.nFileIndexHigh 1421 && csinfo[j].nIndexLow == bhfi.nFileIndexLow)) 1422 #endif 1423 ) 1424 { 1425 if (p_csverbose) 1426 (void)EMSG(_("E568: duplicate cscope database not added")); 1427 return -1; 1428 } 1429 1430 if (csinfo[j].fname == NULL && i == -1) 1431 i = j; /* remember first empty entry */ 1432 } 1433 1434 if (i == -1) 1435 { 1436 i = csinfo_size; 1437 if (csinfo_size == 0) 1438 { 1439 /* First time allocation: allocate only 1 connection. It should 1440 * be enough for most users. If more is needed, csinfo will be 1441 * reallocated. */ 1442 csinfo_size = 1; 1443 csinfo = (csinfo_T *)alloc_clear(sizeof(csinfo_T)); 1444 } 1445 else 1446 { 1447 csinfo_T *t_csinfo = csinfo; 1448 1449 /* Reallocate space for more connections. */ 1450 csinfo_size *= 2; 1451 csinfo = vim_realloc(csinfo, sizeof(csinfo_T)*csinfo_size); 1452 if (csinfo == NULL) 1453 { 1454 vim_free(t_csinfo); 1455 csinfo_size = 0; 1456 } 1457 } 1458 if (csinfo == NULL) 1459 return -1; 1460 for (j = csinfo_size/2; j < csinfo_size; j++) 1461 clear_csinfo(j); 1462 } 1463 1464 if ((csinfo[i].fname = (char *)alloc((unsigned)strlen(fname)+1)) == NULL) 1465 return -1; 1466 1467 (void)strcpy(csinfo[i].fname, (const char *)fname); 1468 1469 if (ppath != NULL) 1470 { 1471 if ((csinfo[i].ppath = (char *)alloc((unsigned)strlen(ppath) + 1)) == NULL) 1472 { 1473 VIM_CLEAR(csinfo[i].fname); 1474 return -1; 1475 } 1476 (void)strcpy(csinfo[i].ppath, (const char *)ppath); 1477 } else 1478 csinfo[i].ppath = NULL; 1479 1480 if (flags != NULL) 1481 { 1482 if ((csinfo[i].flags = (char *)alloc((unsigned)strlen(flags) + 1)) == NULL) 1483 { 1484 VIM_CLEAR(csinfo[i].fname); 1485 VIM_CLEAR(csinfo[i].ppath); 1486 return -1; 1487 } 1488 (void)strcpy(csinfo[i].flags, (const char *)flags); 1489 } else 1490 csinfo[i].flags = NULL; 1491 1492 #if defined(UNIX) 1493 csinfo[i].st_dev = sb->st_dev; 1494 csinfo[i].st_ino = sb->st_ino; 1495 1496 #else 1497 csinfo[i].nVolume = bhfi.dwVolumeSerialNumber; 1498 csinfo[i].nIndexLow = bhfi.nFileIndexLow; 1499 csinfo[i].nIndexHigh = bhfi.nFileIndexHigh; 1500 #endif 1501 return i; 1502 } /* cs_insert_filelist */ 1503 1504 1505 /* 1506 * Find cscope command in command table. 1507 */ 1508 static cscmd_T * 1509 cs_lookup_cmd(exarg_T *eap) 1510 { 1511 cscmd_T *cmdp; 1512 char *stok; 1513 size_t len; 1514 1515 if (eap->arg == NULL) 1516 return NULL; 1517 1518 /* Store length of eap->arg before it gets modified by strtok(). */ 1519 eap_arg_len = (int)STRLEN(eap->arg); 1520 1521 if ((stok = strtok((char *)(eap->arg), (const char *)" ")) == NULL) 1522 return NULL; 1523 1524 len = strlen(stok); 1525 for (cmdp = cs_cmds; cmdp->name != NULL; ++cmdp) 1526 { 1527 if (strncmp((const char *)(stok), cmdp->name, len) == 0) 1528 return (cmdp); 1529 } 1530 return NULL; 1531 } /* cs_lookup_cmd */ 1532 1533 1534 /* 1535 * Nuke em. 1536 */ 1537 static int 1538 cs_kill(exarg_T *eap UNUSED) 1539 { 1540 char *stok; 1541 short i; 1542 1543 if ((stok = strtok((char *)NULL, (const char *)" ")) == NULL) 1544 { 1545 cs_usage_msg(Kill); 1546 return CSCOPE_FAILURE; 1547 } 1548 1549 /* only single digit positive and negative integers are allowed */ 1550 if ((strlen(stok) < 2 && VIM_ISDIGIT((int)(stok[0]))) 1551 || (strlen(stok) < 3 && stok[0] == '-' 1552 && VIM_ISDIGIT((int)(stok[1])))) 1553 i = atoi(stok); 1554 else 1555 { 1556 /* It must be part of a name. We will try to find a match 1557 * within all the names in the csinfo data structure 1558 */ 1559 for (i = 0; i < csinfo_size; i++) 1560 { 1561 if (csinfo[i].fname != NULL && strstr(csinfo[i].fname, stok)) 1562 break; 1563 } 1564 } 1565 1566 if ((i != -1) && (i >= csinfo_size || i < -1 || csinfo[i].fname == NULL)) 1567 { 1568 if (p_csverbose) 1569 (void)EMSG2(_("E261: cscope connection %s not found"), stok); 1570 } 1571 else 1572 { 1573 if (i == -1) 1574 { 1575 for (i = 0; i < csinfo_size; i++) 1576 { 1577 if (csinfo[i].fname) 1578 cs_kill_execute(i, csinfo[i].fname); 1579 } 1580 } 1581 else 1582 cs_kill_execute(i, stok); 1583 } 1584 1585 return 0; 1586 } /* cs_kill */ 1587 1588 1589 /* 1590 * Actually kills a specific cscope connection. 1591 */ 1592 static void 1593 cs_kill_execute( 1594 int i, /* cscope table index */ 1595 char *cname) /* cscope database name */ 1596 { 1597 if (p_csverbose) 1598 { 1599 msg_clr_eos(); 1600 (void)smsg_attr(HL_ATTR(HLF_R) | MSG_HIST, 1601 (char_u *)_("cscope connection %s closed"), cname); 1602 } 1603 cs_release_csp(i, TRUE); 1604 } 1605 1606 1607 /* 1608 * Convert the cscope output into a ctags style entry (as might be found 1609 * in a ctags tags file). there's one catch though: cscope doesn't tell you 1610 * the type of the tag you are looking for. for example, in Darren Hiebert's 1611 * ctags (the one that comes with vim), #define's use a line number to find the 1612 * tag in a file while function definitions use a regexp search pattern. 1613 * 1614 * I'm going to always use the line number because cscope does something 1615 * quirky (and probably other things i don't know about): 1616 * 1617 * if you have "# define" in your source file, which is 1618 * perfectly legal, cscope thinks you have "#define". this 1619 * will result in a failed regexp search. :( 1620 * 1621 * Besides, even if this particular case didn't happen, the search pattern 1622 * would still have to be modified to escape all the special regular expression 1623 * characters to comply with ctags formatting. 1624 */ 1625 static char * 1626 cs_make_vim_style_matches( 1627 char *fname, 1628 char *slno, 1629 char *search, 1630 char *tagstr) 1631 { 1632 /* vim style is ctags: 1633 * 1634 * <tagstr>\t<filename>\t<linenum_or_search>"\t<extra> 1635 * 1636 * but as mentioned above, we'll always use the line number and 1637 * put the search pattern (if one exists) as "extra" 1638 * 1639 * buf is used as part of vim's method of handling tags, and 1640 * (i think) vim frees it when you pop your tags and get replaced 1641 * by new ones on the tag stack. 1642 */ 1643 char *buf; 1644 int amt; 1645 1646 if (search != NULL) 1647 { 1648 amt = (int)(strlen(fname) + strlen(slno) + strlen(tagstr) + strlen(search)+6); 1649 if ((buf = (char *)alloc(amt)) == NULL) 1650 return NULL; 1651 1652 (void)sprintf(buf, "%s\t%s\t%s;\"\t%s", tagstr, fname, slno, search); 1653 } 1654 else 1655 { 1656 amt = (int)(strlen(fname) + strlen(slno) + strlen(tagstr) + 5); 1657 if ((buf = (char *)alloc(amt)) == NULL) 1658 return NULL; 1659 1660 (void)sprintf(buf, "%s\t%s\t%s;\"", tagstr, fname, slno); 1661 } 1662 1663 return buf; 1664 } /* cs_make_vim_style_matches */ 1665 1666 1667 /* 1668 * This is kind of hokey, but i don't see an easy way round this. 1669 * 1670 * Store: keep a ptr to the (malloc'd) memory of matches originally 1671 * generated from cs_find(). the matches are originally lines directly 1672 * from cscope output, but transformed to look like something out of a 1673 * ctags. see cs_make_vim_style_matches for more details. 1674 * 1675 * Get: used only from cs_fgets(), this simulates a vim_fgets() to return 1676 * the next line from the cscope output. it basically keeps track of which 1677 * lines have been "used" and returns the next one. 1678 * 1679 * Free: frees up everything and resets 1680 * 1681 * Print: prints the tags 1682 */ 1683 static char * 1684 cs_manage_matches( 1685 char **matches, 1686 char **contexts, 1687 int totmatches, 1688 mcmd_e cmd) 1689 { 1690 static char **mp = NULL; 1691 static char **cp = NULL; 1692 static int cnt = -1; 1693 static int next = -1; 1694 char *p = NULL; 1695 1696 switch (cmd) 1697 { 1698 case Store: 1699 assert(matches != NULL); 1700 assert(totmatches > 0); 1701 if (mp != NULL || cp != NULL) 1702 (void)cs_manage_matches(NULL, NULL, -1, Free); 1703 mp = matches; 1704 cp = contexts; 1705 cnt = totmatches; 1706 next = 0; 1707 break; 1708 case Get: 1709 if (next >= cnt) 1710 return NULL; 1711 1712 p = mp[next]; 1713 next++; 1714 break; 1715 case Free: 1716 if (mp != NULL) 1717 { 1718 if (cnt > 0) 1719 while (cnt--) 1720 { 1721 vim_free(mp[cnt]); 1722 if (cp != NULL) 1723 vim_free(cp[cnt]); 1724 } 1725 vim_free(mp); 1726 vim_free(cp); 1727 } 1728 mp = NULL; 1729 cp = NULL; 1730 cnt = 0; 1731 next = 0; 1732 break; 1733 case Print: 1734 cs_print_tags_priv(mp, cp, cnt); 1735 break; 1736 default: /* should not reach here */ 1737 IEMSG(_("E570: fatal error in cs_manage_matches")); 1738 return NULL; 1739 } 1740 1741 return p; 1742 } /* cs_manage_matches */ 1743 1744 1745 /* 1746 * Parse cscope output. 1747 */ 1748 static char * 1749 cs_parse_results( 1750 int cnumber, 1751 char *buf, 1752 int bufsize, 1753 char **context, 1754 char **linenumber, 1755 char **search) 1756 { 1757 int ch; 1758 char *p; 1759 char *name; 1760 1761 if (fgets(buf, bufsize, csinfo[cnumber].fr_fp) == NULL) 1762 { 1763 if (feof(csinfo[cnumber].fr_fp)) 1764 errno = EIO; 1765 1766 cs_reading_emsg(cnumber); 1767 1768 return NULL; 1769 } 1770 1771 /* If the line's too long for the buffer, discard it. */ 1772 if ((p = strchr(buf, '\n')) == NULL) 1773 { 1774 while ((ch = getc(csinfo[cnumber].fr_fp)) != EOF && ch != '\n') 1775 ; 1776 return NULL; 1777 } 1778 *p = '\0'; 1779 1780 /* 1781 * cscope output is in the following format: 1782 * 1783 * <filename> <context> <line number> <pattern> 1784 */ 1785 if ((name = strtok((char *)buf, (const char *)" ")) == NULL) 1786 return NULL; 1787 if ((*context = strtok(NULL, (const char *)" ")) == NULL) 1788 return NULL; 1789 if ((*linenumber = strtok(NULL, (const char *)" ")) == NULL) 1790 return NULL; 1791 *search = *linenumber + strlen(*linenumber) + 1; /* +1 to skip \0 */ 1792 1793 /* --- nvi --- 1794 * If the file is older than the cscope database, that is, 1795 * the database was built since the file was last modified, 1796 * or there wasn't a search string, use the line number. 1797 */ 1798 if (strcmp(*search, "<unknown>") == 0) 1799 *search = NULL; 1800 1801 name = cs_resolve_file(cnumber, name); 1802 return name; 1803 } 1804 1805 #ifdef FEAT_QUICKFIX 1806 /* 1807 * Write cscope find results to file. 1808 */ 1809 static void 1810 cs_file_results(FILE *f, int *nummatches_a) 1811 { 1812 int i, j; 1813 char *buf; 1814 char *search, *slno; 1815 char *fullname; 1816 char *cntx; 1817 char *context; 1818 1819 buf = (char *)alloc(CSREAD_BUFSIZE); 1820 if (buf == NULL) 1821 return; 1822 1823 for (i = 0; i < csinfo_size; i++) 1824 { 1825 if (nummatches_a[i] < 1) 1826 continue; 1827 1828 for (j = 0; j < nummatches_a[i]; j++) 1829 { 1830 if ((fullname = cs_parse_results(i, buf, CSREAD_BUFSIZE, &cntx, 1831 &slno, &search)) == NULL) 1832 continue; 1833 1834 context = (char *)alloc((unsigned)strlen(cntx)+5); 1835 if (context == NULL) 1836 continue; 1837 1838 if (strcmp(cntx, "<global>")==0) 1839 strcpy(context, "<<global>>"); 1840 else 1841 sprintf(context, "<<%s>>", cntx); 1842 1843 if (search == NULL) 1844 fprintf(f, "%s\t%s\t%s\n", fullname, slno, context); 1845 else 1846 fprintf(f, "%s\t%s\t%s %s\n", fullname, slno, context, search); 1847 1848 vim_free(context); 1849 vim_free(fullname); 1850 } /* for all matches */ 1851 1852 (void)cs_read_prompt(i); 1853 1854 } /* for all cscope connections */ 1855 vim_free(buf); 1856 } 1857 #endif 1858 1859 /* 1860 * Get parsed cscope output and calls cs_make_vim_style_matches to convert 1861 * into ctags format. 1862 * When there are no matches sets "*matches_p" to NULL. 1863 */ 1864 static void 1865 cs_fill_results( 1866 char *tagstr, 1867 int totmatches, 1868 int *nummatches_a, 1869 char ***matches_p, 1870 char ***cntxts_p, 1871 int *matched) 1872 { 1873 int i, j; 1874 char *buf; 1875 char *search, *slno; 1876 int totsofar = 0; 1877 char **matches = NULL; 1878 char **cntxts = NULL; 1879 char *fullname; 1880 char *cntx; 1881 1882 assert(totmatches > 0); 1883 1884 buf = (char *)alloc(CSREAD_BUFSIZE); 1885 if (buf == NULL) 1886 return; 1887 1888 if ((matches = (char **)alloc(sizeof(char *) * totmatches)) == NULL) 1889 goto parse_out; 1890 if ((cntxts = (char **)alloc(sizeof(char *) * totmatches)) == NULL) 1891 goto parse_out; 1892 1893 for (i = 0; i < csinfo_size; i++) 1894 { 1895 if (nummatches_a[i] < 1) 1896 continue; 1897 1898 for (j = 0; j < nummatches_a[i]; j++) 1899 { 1900 if ((fullname = cs_parse_results(i, buf, CSREAD_BUFSIZE, &cntx, 1901 &slno, &search)) == NULL) 1902 continue; 1903 1904 matches[totsofar] = cs_make_vim_style_matches(fullname, slno, 1905 search, tagstr); 1906 1907 vim_free(fullname); 1908 1909 if (strcmp(cntx, "<global>") == 0) 1910 cntxts[totsofar] = NULL; 1911 else 1912 /* note: if vim_strsave returns NULL, then the context 1913 * will be "<global>", which is misleading. 1914 */ 1915 cntxts[totsofar] = (char *)vim_strsave((char_u *)cntx); 1916 1917 if (matches[totsofar] != NULL) 1918 totsofar++; 1919 1920 } /* for all matches */ 1921 1922 (void)cs_read_prompt(i); 1923 1924 } /* for all cscope connections */ 1925 1926 parse_out: 1927 if (totsofar == 0) 1928 { 1929 /* No matches, free the arrays and return NULL in "*matches_p". */ 1930 VIM_CLEAR(matches); 1931 VIM_CLEAR(cntxts); 1932 } 1933 *matched = totsofar; 1934 *matches_p = matches; 1935 *cntxts_p = cntxts; 1936 1937 vim_free(buf); 1938 } /* cs_fill_results */ 1939 1940 1941 /* get the requested path components */ 1942 static char * 1943 cs_pathcomponents(char *path) 1944 { 1945 int i; 1946 char *s; 1947 1948 if (p_cspc == 0) 1949 return path; 1950 1951 s = path + strlen(path) - 1; 1952 for (i = 0; i < p_cspc; ++i) 1953 while (s > path && *--s != '/' 1954 #ifdef WIN32 1955 && *--s != '\\' 1956 #endif 1957 ) 1958 ; 1959 if ((s > path && *s == '/') 1960 #ifdef WIN32 1961 || (s > path && *s == '\\') 1962 #endif 1963 ) 1964 ++s; 1965 return s; 1966 } 1967 1968 /* 1969 * Called from cs_manage_matches(). 1970 */ 1971 static void 1972 cs_print_tags_priv(char **matches, char **cntxts, int num_matches) 1973 { 1974 char *buf = NULL; 1975 char *t_buf; 1976 int bufsize = 0; /* Track available bufsize */ 1977 int newsize = 0; 1978 char *ptag; 1979 char *fname, *lno, *extra, *tbuf; 1980 int i, idx, num; 1981 char *globalcntx = "GLOBAL"; 1982 char *cntxformat = " <<%s>>"; 1983 char *context; 1984 char *cstag_msg = _("Cscope tag: %s"); 1985 char *csfmt_str = "%4d %6s "; 1986 1987 assert(num_matches > 0); 1988 1989 if ((tbuf = (char *)alloc((unsigned)strlen(matches[0]) + 1)) == NULL) 1990 return; 1991 1992 strcpy(tbuf, matches[0]); 1993 ptag = strtok(tbuf, "\t"); 1994 if (ptag == NULL) 1995 { 1996 vim_free(tbuf); 1997 return; 1998 } 1999 2000 newsize = (int)(strlen(cstag_msg) + strlen(ptag)); 2001 buf = (char *)alloc(newsize); 2002 if (buf != NULL) 2003 { 2004 bufsize = newsize; 2005 (void)sprintf(buf, cstag_msg, ptag); 2006 MSG_PUTS_ATTR(buf, HL_ATTR(HLF_T)); 2007 } 2008 2009 vim_free(tbuf); 2010 2011 MSG_PUTS_ATTR(_("\n # line"), HL_ATTR(HLF_T)); /* strlen is 7 */ 2012 msg_advance(msg_col + 2); 2013 MSG_PUTS_ATTR(_("filename / context / line\n"), HL_ATTR(HLF_T)); 2014 2015 num = 1; 2016 for (i = 0; i < num_matches; i++) 2017 { 2018 idx = i; 2019 2020 /* if we really wanted to, we could avoid this malloc and strcpy 2021 * by parsing matches[i] on the fly and placing stuff into buf 2022 * directly, but that's too much of a hassle 2023 */ 2024 if ((tbuf = (char *)alloc((unsigned)strlen(matches[idx]) + 1)) == NULL) 2025 continue; 2026 (void)strcpy(tbuf, matches[idx]); 2027 2028 if (strtok(tbuf, (const char *)"\t") == NULL 2029 || (fname = strtok(NULL, (const char *)"\t")) == NULL 2030 || (lno = strtok(NULL, (const char *)"\t")) == NULL) 2031 { 2032 vim_free(tbuf); 2033 continue; 2034 } 2035 extra = strtok(NULL, (const char *)"\t"); 2036 2037 lno[strlen(lno)-2] = '\0'; /* ignore ;" at the end */ 2038 2039 /* hopefully 'num' (num of matches) will be less than 10^16 */ 2040 newsize = (int)(strlen(csfmt_str) + 16 + strlen(lno)); 2041 if (bufsize < newsize) 2042 { 2043 t_buf = buf; 2044 buf = (char *)vim_realloc(buf, newsize); 2045 if (buf == NULL) 2046 { 2047 bufsize = 0; 2048 vim_free(t_buf); 2049 } 2050 else 2051 bufsize = newsize; 2052 } 2053 if (buf != NULL) 2054 { 2055 /* csfmt_str = "%4d %6s "; */ 2056 (void)sprintf(buf, csfmt_str, num, lno); 2057 MSG_PUTS_ATTR(buf, HL_ATTR(HLF_CM)); 2058 } 2059 MSG_PUTS_LONG_ATTR(cs_pathcomponents(fname), HL_ATTR(HLF_CM)); 2060 2061 /* compute the required space for the context */ 2062 if (cntxts[idx] != NULL) 2063 context = cntxts[idx]; 2064 else 2065 context = globalcntx; 2066 newsize = (int)(strlen(context) + strlen(cntxformat)); 2067 2068 if (bufsize < newsize) 2069 { 2070 t_buf = buf; 2071 buf = (char *)vim_realloc(buf, newsize); 2072 if (buf == NULL) 2073 { 2074 bufsize = 0; 2075 vim_free(t_buf); 2076 } 2077 else 2078 bufsize = newsize; 2079 } 2080 if (buf != NULL) 2081 { 2082 (void)sprintf(buf, cntxformat, context); 2083 2084 /* print the context only if it fits on the same line */ 2085 if (msg_col + (int)strlen(buf) >= (int)Columns) 2086 msg_putchar('\n'); 2087 msg_advance(12); 2088 MSG_PUTS_LONG(buf); 2089 msg_putchar('\n'); 2090 } 2091 if (extra != NULL) 2092 { 2093 msg_advance(13); 2094 MSG_PUTS_LONG(extra); 2095 } 2096 2097 vim_free(tbuf); /* only after printing extra due to strtok use */ 2098 2099 if (msg_col) 2100 msg_putchar('\n'); 2101 2102 ui_breakcheck(); 2103 if (got_int) 2104 { 2105 got_int = FALSE; /* don't print any more matches */ 2106 break; 2107 } 2108 2109 num++; 2110 } /* for all matches */ 2111 2112 vim_free(buf); 2113 } /* cs_print_tags_priv */ 2114 2115 2116 /* 2117 * Read a cscope prompt (basically, skip over the ">> "). 2118 */ 2119 static int 2120 cs_read_prompt(int i) 2121 { 2122 int ch; 2123 char *buf = NULL; /* buffer for possible error message from cscope */ 2124 int bufpos = 0; 2125 char *cs_emsg; 2126 int maxlen; 2127 static char *eprompt = "Press the RETURN key to continue:"; 2128 int epromptlen = (int)strlen(eprompt); 2129 int n; 2130 2131 cs_emsg = _("E609: Cscope error: %s"); 2132 /* compute maximum allowed len for Cscope error message */ 2133 maxlen = (int)(IOSIZE - strlen(cs_emsg)); 2134 2135 for (;;) 2136 { 2137 while ((ch = getc(csinfo[i].fr_fp)) != EOF && ch != CSCOPE_PROMPT[0]) 2138 /* if there is room and char is printable */ 2139 if (bufpos < maxlen - 1 && vim_isprintc(ch)) 2140 { 2141 if (buf == NULL) /* lazy buffer allocation */ 2142 buf = (char *)alloc(maxlen); 2143 if (buf != NULL) 2144 { 2145 /* append character to the message */ 2146 buf[bufpos++] = ch; 2147 buf[bufpos] = NUL; 2148 if (bufpos >= epromptlen 2149 && strcmp(&buf[bufpos - epromptlen], eprompt) == 0) 2150 { 2151 /* remove eprompt from buf */ 2152 buf[bufpos - epromptlen] = NUL; 2153 2154 /* print message to user */ 2155 (void)EMSG2(cs_emsg, buf); 2156 2157 /* send RETURN to cscope */ 2158 (void)putc('\n', csinfo[i].to_fp); 2159 (void)fflush(csinfo[i].to_fp); 2160 2161 /* clear buf */ 2162 bufpos = 0; 2163 buf[bufpos] = NUL; 2164 } 2165 } 2166 } 2167 2168 for (n = 0; n < (int)strlen(CSCOPE_PROMPT); ++n) 2169 { 2170 if (n > 0) 2171 ch = getc(csinfo[i].fr_fp); 2172 if (ch == EOF) 2173 { 2174 PERROR("cs_read_prompt EOF"); 2175 if (buf != NULL && buf[0] != NUL) 2176 (void)EMSG2(cs_emsg, buf); 2177 else if (p_csverbose) 2178 cs_reading_emsg(i); /* don't have additional information */ 2179 cs_release_csp(i, TRUE); 2180 vim_free(buf); 2181 return CSCOPE_FAILURE; 2182 } 2183 2184 if (ch != CSCOPE_PROMPT[n]) 2185 { 2186 ch = EOF; 2187 break; 2188 } 2189 } 2190 2191 if (ch == EOF) 2192 continue; /* didn't find the prompt */ 2193 break; /* did find the prompt */ 2194 } 2195 2196 vim_free(buf); 2197 return CSCOPE_SUCCESS; 2198 } 2199 2200 #if defined(UNIX) && defined(SIGALRM) 2201 /* 2202 * Used to catch and ignore SIGALRM below. 2203 */ 2204 static RETSIGTYPE 2205 sig_handler SIGDEFARG(sigarg) 2206 { 2207 /* do nothing */ 2208 SIGRETURN; 2209 } 2210 #endif 2211 2212 /* 2213 * Does the actual free'ing for the cs ptr with an optional flag of whether 2214 * or not to free the filename. Called by cs_kill and cs_reset. 2215 */ 2216 static void 2217 cs_release_csp(int i, int freefnpp) 2218 { 2219 /* 2220 * Trying to exit normally (not sure whether it is fit to UNIX cscope 2221 */ 2222 if (csinfo[i].to_fp != NULL) 2223 { 2224 (void)fputs("q\n", csinfo[i].to_fp); 2225 (void)fflush(csinfo[i].to_fp); 2226 } 2227 #if defined(UNIX) 2228 { 2229 int waitpid_errno; 2230 int pstat; 2231 pid_t pid; 2232 2233 # if defined(HAVE_SIGACTION) 2234 struct sigaction sa, old; 2235 2236 /* Use sigaction() to limit the waiting time to two seconds. */ 2237 sigemptyset(&sa.sa_mask); 2238 sa.sa_handler = sig_handler; 2239 # ifdef SA_NODEFER 2240 sa.sa_flags = SA_NODEFER; 2241 # else 2242 sa.sa_flags = 0; 2243 # endif 2244 sigaction(SIGALRM, &sa, &old); 2245 alarm(2); /* 2 sec timeout */ 2246 2247 /* Block until cscope exits or until timer expires */ 2248 pid = waitpid(csinfo[i].pid, &pstat, 0); 2249 waitpid_errno = errno; 2250 2251 /* cancel pending alarm if still there and restore signal */ 2252 alarm(0); 2253 sigaction(SIGALRM, &old, NULL); 2254 # else 2255 int waited; 2256 2257 /* Can't use sigaction(), loop for two seconds. First yield the CPU 2258 * to give cscope a chance to exit quickly. */ 2259 sleep(0); 2260 for (waited = 0; waited < 40; ++waited) 2261 { 2262 pid = waitpid(csinfo[i].pid, &pstat, WNOHANG); 2263 waitpid_errno = errno; 2264 if (pid != 0) 2265 break; /* break unless the process is still running */ 2266 mch_delay(50L, FALSE); /* sleep 50 ms */ 2267 } 2268 # endif 2269 /* 2270 * If the cscope process is still running: kill it. 2271 * Safety check: If the PID would be zero here, the entire X session 2272 * would be killed. -1 and 1 are dangerous as well. 2273 */ 2274 if (pid < 0 && csinfo[i].pid > 1) 2275 { 2276 # ifdef ECHILD 2277 int alive = TRUE; 2278 2279 if (waitpid_errno == ECHILD) 2280 { 2281 /* 2282 * When using 'vim -g', vim is forked and cscope process is 2283 * no longer a child process but a sibling. So waitpid() 2284 * fails with errno being ECHILD (No child processes). 2285 * Don't send SIGKILL to cscope immediately but wait 2286 * (polling) for it to exit normally as result of sending 2287 * the "q" command, hence giving it a chance to clean up 2288 * its temporary files. 2289 */ 2290 int waited; 2291 2292 sleep(0); 2293 for (waited = 0; waited < 40; ++waited) 2294 { 2295 /* Check whether cscope process is still alive */ 2296 if (kill(csinfo[i].pid, 0) != 0) 2297 { 2298 alive = FALSE; /* cscope process no longer exists */ 2299 break; 2300 } 2301 mch_delay(50L, FALSE); /* sleep 50ms */ 2302 } 2303 } 2304 if (alive) 2305 # endif 2306 { 2307 kill(csinfo[i].pid, SIGKILL); 2308 (void)waitpid(csinfo[i].pid, &pstat, 0); 2309 } 2310 } 2311 } 2312 #else /* !UNIX */ 2313 if (csinfo[i].hProc != NULL) 2314 { 2315 /* Give cscope a chance to exit normally */ 2316 if (WaitForSingleObject(csinfo[i].hProc, 1000) == WAIT_TIMEOUT) 2317 TerminateProcess(csinfo[i].hProc, 0); 2318 CloseHandle(csinfo[i].hProc); 2319 } 2320 #endif 2321 2322 if (csinfo[i].fr_fp != NULL) 2323 (void)fclose(csinfo[i].fr_fp); 2324 if (csinfo[i].to_fp != NULL) 2325 (void)fclose(csinfo[i].to_fp); 2326 2327 if (freefnpp) 2328 { 2329 vim_free(csinfo[i].fname); 2330 vim_free(csinfo[i].ppath); 2331 vim_free(csinfo[i].flags); 2332 } 2333 2334 clear_csinfo(i); 2335 } /* cs_release_csp */ 2336 2337 2338 /* 2339 * Calls cs_kill on all cscope connections then reinits. 2340 */ 2341 static int 2342 cs_reset(exarg_T *eap UNUSED) 2343 { 2344 char **dblist = NULL, **pplist = NULL, **fllist = NULL; 2345 int i; 2346 char buf[20]; /* for sprintf " (#%d)" */ 2347 2348 if (csinfo_size == 0) 2349 return CSCOPE_SUCCESS; 2350 2351 /* malloc our db and ppath list */ 2352 dblist = (char **)alloc(csinfo_size * sizeof(char *)); 2353 pplist = (char **)alloc(csinfo_size * sizeof(char *)); 2354 fllist = (char **)alloc(csinfo_size * sizeof(char *)); 2355 if (dblist == NULL || pplist == NULL || fllist == NULL) 2356 { 2357 vim_free(dblist); 2358 vim_free(pplist); 2359 vim_free(fllist); 2360 return CSCOPE_FAILURE; 2361 } 2362 2363 for (i = 0; i < csinfo_size; i++) 2364 { 2365 dblist[i] = csinfo[i].fname; 2366 pplist[i] = csinfo[i].ppath; 2367 fllist[i] = csinfo[i].flags; 2368 if (csinfo[i].fname != NULL) 2369 cs_release_csp(i, FALSE); 2370 } 2371 2372 /* rebuild the cscope connection list */ 2373 for (i = 0; i < csinfo_size; i++) 2374 { 2375 if (dblist[i] != NULL) 2376 { 2377 cs_add_common(dblist[i], pplist[i], fllist[i]); 2378 if (p_csverbose) 2379 { 2380 /* don't use smsg_attr() because we want to display the 2381 * connection number in the same line as 2382 * "Added cscope database..." 2383 */ 2384 sprintf(buf, " (#%d)", i); 2385 MSG_PUTS_ATTR(buf, HL_ATTR(HLF_R)); 2386 } 2387 } 2388 vim_free(dblist[i]); 2389 vim_free(pplist[i]); 2390 vim_free(fllist[i]); 2391 } 2392 vim_free(dblist); 2393 vim_free(pplist); 2394 vim_free(fllist); 2395 2396 if (p_csverbose) 2397 MSG_ATTR(_("All cscope databases reset"), HL_ATTR(HLF_R) | MSG_HIST); 2398 return CSCOPE_SUCCESS; 2399 } /* cs_reset */ 2400 2401 2402 /* 2403 * Construct the full pathname to a file found in the cscope database. 2404 * (Prepends ppath, if there is one and if it's not already prepended, 2405 * otherwise just uses the name found.) 2406 * 2407 * We need to prepend the prefix because on some cscope's (e.g., the one that 2408 * ships with Solaris 2.6), the output never has the prefix prepended. 2409 * Contrast this with my development system (Digital Unix), which does. 2410 */ 2411 static char * 2412 cs_resolve_file(int i, char *name) 2413 { 2414 char *fullname; 2415 int len; 2416 char_u *csdir = NULL; 2417 2418 /* 2419 * Ppath is freed when we destroy the cscope connection. 2420 * Fullname is freed after cs_make_vim_style_matches, after it's been 2421 * copied into the tag buffer used by Vim. 2422 */ 2423 len = (int)(strlen(name) + 2); 2424 if (csinfo[i].ppath != NULL) 2425 len += (int)strlen(csinfo[i].ppath); 2426 else if (p_csre && csinfo[i].fname != NULL) 2427 { 2428 /* If 'cscoperelative' is set and ppath is not set, use cscope.out 2429 * path in path resolution. */ 2430 csdir = alloc(MAXPATHL); 2431 if (csdir != NULL) 2432 { 2433 vim_strncpy(csdir, (char_u *)csinfo[i].fname, 2434 gettail((char_u *)csinfo[i].fname) 2435 - (char_u *)csinfo[i].fname); 2436 len += (int)STRLEN(csdir); 2437 } 2438 } 2439 2440 /* Note/example: this won't work if the cscope output already starts 2441 * "../.." and the prefix path is also "../..". if something like this 2442 * happens, you are screwed up and need to fix how you're using cscope. */ 2443 if (csinfo[i].ppath != NULL 2444 && (strncmp(name, csinfo[i].ppath, strlen(csinfo[i].ppath)) != 0) 2445 && (name[0] != '/') 2446 #ifdef WIN32 2447 && name[0] != '\\' && name[1] != ':' 2448 #endif 2449 ) 2450 { 2451 if ((fullname = (char *)alloc(len)) != NULL) 2452 (void)sprintf(fullname, "%s/%s", csinfo[i].ppath, name); 2453 } 2454 else if (csdir != NULL && csinfo[i].fname != NULL && *csdir != NUL) 2455 { 2456 /* Check for csdir to be non empty to avoid empty path concatenated to 2457 * cscope output. */ 2458 fullname = (char *)concat_fnames(csdir, (char_u *)name, TRUE); 2459 } 2460 else 2461 { 2462 fullname = (char *)vim_strsave((char_u *)name); 2463 } 2464 2465 vim_free(csdir); 2466 return fullname; 2467 } 2468 2469 2470 /* 2471 * Show all cscope connections. 2472 */ 2473 static int 2474 cs_show(exarg_T *eap UNUSED) 2475 { 2476 short i; 2477 if (cs_cnt_connections() == 0) 2478 MSG_PUTS(_("no cscope connections\n")); 2479 else 2480 { 2481 MSG_PUTS_ATTR( 2482 _(" # pid database name prepend path\n"), 2483 HL_ATTR(HLF_T)); 2484 for (i = 0; i < csinfo_size; i++) 2485 { 2486 if (csinfo[i].fname == NULL) 2487 continue; 2488 2489 if (csinfo[i].ppath != NULL) 2490 (void)smsg((char_u *)"%2d %-5ld %-34s %-32s", 2491 i, (long)csinfo[i].pid, csinfo[i].fname, csinfo[i].ppath); 2492 else 2493 (void)smsg((char_u *)"%2d %-5ld %-34s <none>", 2494 i, (long)csinfo[i].pid, csinfo[i].fname); 2495 } 2496 } 2497 2498 wait_return(TRUE); 2499 return CSCOPE_SUCCESS; 2500 } /* cs_show */ 2501 2502 2503 /* 2504 * Only called when VIM exits to quit any cscope sessions. 2505 */ 2506 void 2507 cs_end(void) 2508 { 2509 int i; 2510 2511 for (i = 0; i < csinfo_size; i++) 2512 cs_release_csp(i, TRUE); 2513 vim_free(csinfo); 2514 csinfo_size = 0; 2515 } 2516 2517 #endif /* FEAT_CSCOPE */ 2518 2519 /* the end */ 2520