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 int cs_add(exarg_T *eap); 24 static int cs_add_common(char *, char *, char *); 25 static int cs_check_for_connections(void); 26 static int cs_check_for_tags(void); 27 static int cs_cnt_connections(void); 28 static int cs_create_connection(int i); 29 #ifdef FEAT_QUICKFIX 30 static void cs_file_results(FILE *, int *); 31 #endif 32 static void cs_fill_results(char *, int , int *, char ***, 33 char ***, int *); 34 static int cs_find(exarg_T *eap); 35 static int cs_find_common(char *opt, char *pat, int, int, int, char_u *cmdline); 36 static int cs_help(exarg_T *eap); 37 static int cs_insert_filelist(char *, char *, char *, 38 stat_T *); 39 static int cs_kill(exarg_T *eap); 40 static void cs_kill_execute(int, char *); 41 static cscmd_T * cs_lookup_cmd(exarg_T *eap); 42 static char * cs_make_vim_style_matches(char *, char *, 43 char *, char *); 44 static char * cs_manage_matches(char **, char **, int, mcmd_e); 45 static void cs_print_tags_priv(char **, char **, int); 46 static int cs_read_prompt(int); 47 static void cs_release_csp(int, int freefnpp); 48 static int cs_reset(exarg_T *eap); 49 static char * cs_resolve_file(int, char *); 50 static int cs_show(exarg_T *eap); 51 52 53 static csinfo_T * csinfo = NULL; 54 static int csinfo_size = 0; // number of items allocated in 55 // csinfo[] 56 57 static int eap_arg_len; // length of eap->arg, set in 58 // cs_lookup_cmd() 59 static cscmd_T cs_cmds[] = 60 { 61 { "add", cs_add, 62 N_("Add a new database"), "add file|dir [pre-path] [flags]", 0 }, 63 { "find", cs_find, 64 N_("Query for a pattern"), "find a|c|d|e|f|g|i|s|t name", 1 }, 65 { "help", cs_help, 66 N_("Show this message"), "help", 0 }, 67 { "kill", cs_kill, 68 N_("Kill a connection"), "kill #", 0 }, 69 { "reset", cs_reset, 70 N_("Reinit all connections"), "reset", 0 }, 71 { "show", cs_show, 72 N_("Show connections"), "show", 0 }, 73 { NULL, NULL, NULL, NULL, 0 } 74 }; 75 76 static void 77 cs_usage_msg(csid_e x) 78 { 79 (void)semsg(_("E560: Usage: cs[cope] %s"), cs_cmds[(int)x].usage); 80 } 81 82 static enum 83 { 84 EXP_CSCOPE_SUBCMD, // expand ":cscope" sub-commands 85 EXP_SCSCOPE_SUBCMD, // expand ":scscope" sub-commands 86 EXP_CSCOPE_FIND, // expand ":cscope find" arguments 87 EXP_CSCOPE_KILL // expand ":cscope kill" arguments 88 } expand_what; 89 90 /* 91 * Function given to ExpandGeneric() to obtain the cscope command 92 * expansion. 93 */ 94 char_u * 95 get_cscope_name(expand_T *xp UNUSED, int idx) 96 { 97 int current_idx; 98 int i; 99 100 switch (expand_what) 101 { 102 case EXP_CSCOPE_SUBCMD: 103 // Complete with sub-commands of ":cscope": 104 // add, find, help, kill, reset, show 105 return (char_u *)cs_cmds[idx].name; 106 case EXP_SCSCOPE_SUBCMD: 107 // Complete with sub-commands of ":scscope": same sub-commands as 108 // ":cscope" but skip commands which don't support split windows 109 for (i = 0, current_idx = 0; cs_cmds[i].name != NULL; i++) 110 if (cs_cmds[i].cansplit) 111 if (current_idx++ == idx) 112 break; 113 return (char_u *)cs_cmds[i].name; 114 case EXP_CSCOPE_FIND: 115 { 116 const char *query_type[] = 117 { 118 "a", "c", "d", "e", "f", "g", "i", "s", "t", NULL 119 }; 120 121 // Complete with query type of ":cscope find {query_type}". 122 // {query_type} can be letters (c, d, ... a) or numbers (0, 1, 123 // ..., 9) but only complete with letters, since numbers are 124 // redundant. 125 return (char_u *)query_type[idx]; 126 } 127 case EXP_CSCOPE_KILL: 128 { 129 static char connection[5]; 130 131 // ":cscope kill" accepts connection numbers or partial names of 132 // the pathname of the cscope database as argument. Only complete 133 // with connection numbers. -1 can also be used to kill all 134 // connections. 135 for (i = 0, current_idx = 0; i < csinfo_size; i++) 136 { 137 if (csinfo[i].fname == NULL) 138 continue; 139 if (current_idx++ == idx) 140 { 141 vim_snprintf(connection, sizeof(connection), "%d", i); 142 return (char_u *)connection; 143 } 144 } 145 return (current_idx == idx && idx > 0) ? (char_u *)"-1" : NULL; 146 } 147 default: 148 return NULL; 149 } 150 } 151 152 /* 153 * Handle command line completion for :cscope command. 154 */ 155 void 156 set_context_in_cscope_cmd( 157 expand_T *xp, 158 char_u *arg, 159 cmdidx_T cmdidx) 160 { 161 char_u *p; 162 163 // Default: expand subcommands 164 xp->xp_context = EXPAND_CSCOPE; 165 xp->xp_pattern = arg; 166 expand_what = (cmdidx == CMD_scscope) 167 ? EXP_SCSCOPE_SUBCMD : EXP_CSCOPE_SUBCMD; 168 169 // (part of) subcommand already typed 170 if (*arg != NUL) 171 { 172 p = skiptowhite(arg); 173 if (*p != NUL) // past first word 174 { 175 xp->xp_pattern = skipwhite(p); 176 if (*skiptowhite(xp->xp_pattern) != NUL) 177 xp->xp_context = EXPAND_NOTHING; 178 else if (STRNICMP(arg, "add", p - arg) == 0) 179 xp->xp_context = EXPAND_FILES; 180 else if (STRNICMP(arg, "kill", p - arg) == 0) 181 expand_what = EXP_CSCOPE_KILL; 182 else if (STRNICMP(arg, "find", p - arg) == 0) 183 expand_what = EXP_CSCOPE_FIND; 184 else 185 xp->xp_context = EXPAND_NOTHING; 186 } 187 } 188 } 189 190 /* 191 * Find the command, print help if invalid, and then call the corresponding 192 * command function. 193 */ 194 static void 195 do_cscope_general( 196 exarg_T *eap, 197 int make_split UNUSED) // whether to split window 198 { 199 cscmd_T *cmdp; 200 201 if ((cmdp = cs_lookup_cmd(eap)) == NULL) 202 { 203 cs_help(eap); 204 return; 205 } 206 207 if (make_split) 208 { 209 if (!cmdp->cansplit) 210 { 211 (void)msg_puts(_("This cscope command does not support splitting the window.\n")); 212 return; 213 } 214 postponed_split = -1; 215 postponed_split_flags = cmdmod.cmod_split; 216 postponed_split_tab = cmdmod.cmod_tab; 217 } 218 219 cmdp->func(eap); 220 221 postponed_split_flags = 0; 222 postponed_split_tab = 0; 223 } 224 225 /* 226 * Implementation of ":cscope" and ":lcscope" 227 */ 228 void 229 ex_cscope(exarg_T *eap) 230 { 231 do_cscope_general(eap, FALSE); 232 } 233 234 /* 235 * Implementation of ":scscope". Same as ex_cscope(), but splits window, too. 236 */ 237 void 238 ex_scscope(exarg_T *eap) 239 { 240 do_cscope_general(eap, TRUE); 241 } 242 243 /* 244 * Implementation of ":cstag" 245 */ 246 void 247 ex_cstag(exarg_T *eap) 248 { 249 int ret = FALSE; 250 251 if (*eap->arg == NUL) 252 { 253 (void)emsg(_("E562: Usage: cstag <ident>")); 254 return; 255 } 256 257 switch (p_csto) 258 { 259 case 0 : 260 if (cs_check_for_connections()) 261 { 262 ret = cs_find_common("g", (char *)(eap->arg), eap->forceit, FALSE, 263 FALSE, *eap->cmdlinep); 264 if (ret == FALSE) 265 { 266 cs_free_tags(); 267 if (msg_col) 268 msg_putchar('\n'); 269 270 if (cs_check_for_tags()) 271 ret = do_tag(eap->arg, DT_JUMP, 0, eap->forceit, FALSE); 272 } 273 } 274 else if (cs_check_for_tags()) 275 { 276 ret = do_tag(eap->arg, DT_JUMP, 0, eap->forceit, FALSE); 277 } 278 break; 279 case 1 : 280 if (cs_check_for_tags()) 281 { 282 ret = do_tag(eap->arg, DT_JUMP, 0, eap->forceit, FALSE); 283 if (ret == FALSE) 284 { 285 if (msg_col) 286 msg_putchar('\n'); 287 288 if (cs_check_for_connections()) 289 { 290 ret = cs_find_common("g", (char *)(eap->arg), eap->forceit, 291 FALSE, FALSE, *eap->cmdlinep); 292 if (ret == FALSE) 293 cs_free_tags(); 294 } 295 } 296 } 297 else if (cs_check_for_connections()) 298 { 299 ret = cs_find_common("g", (char *)(eap->arg), eap->forceit, FALSE, 300 FALSE, *eap->cmdlinep); 301 if (ret == FALSE) 302 cs_free_tags(); 303 } 304 break; 305 default : 306 break; 307 } 308 309 if (!ret) 310 { 311 (void)emsg(_("E257: cstag: tag not found")); 312 #if defined(FEAT_QUICKFIX) 313 g_do_tagpreview = 0; 314 #endif 315 } 316 317 } 318 319 320 /* 321 * This simulates a vim_fgets(), but for cscope, returns the next line 322 * from the cscope output. should only be called from find_tags() 323 * 324 * returns TRUE if eof, FALSE otherwise 325 */ 326 int 327 cs_fgets(char_u *buf, int size) 328 { 329 char *p; 330 331 if ((p = cs_manage_matches(NULL, NULL, -1, Get)) == NULL) 332 return TRUE; 333 vim_strncpy(buf, (char_u *)p, size - 1); 334 335 return FALSE; 336 } 337 338 339 /* 340 * Called only from do_tag(), when popping the tag stack. 341 */ 342 void 343 cs_free_tags(void) 344 { 345 cs_manage_matches(NULL, NULL, -1, Free); 346 } 347 348 349 /* 350 * Called from do_tag(). 351 */ 352 void 353 cs_print_tags(void) 354 { 355 cs_manage_matches(NULL, NULL, -1, Print); 356 } 357 358 359 /* 360 * "cscope_connection([{num} , {dbpath} [, {prepend}]])" function 361 * 362 * Checks for the existence of a |cscope| connection. If no 363 * parameters are specified, then the function returns: 364 * 365 * 0, if cscope was not available (not compiled in), or if there 366 * are no cscope connections; or 367 * 1, if there is at least one cscope connection. 368 * 369 * If parameters are specified, then the value of {num} 370 * determines how existence of a cscope connection is checked: 371 * 372 * {num} Description of existence check 373 * ----- ------------------------------ 374 * 0 Same as no parameters (e.g., "cscope_connection()"). 375 * 1 Ignore {prepend}, and use partial string matches for 376 * {dbpath}. 377 * 2 Ignore {prepend}, and use exact string matches for 378 * {dbpath}. 379 * 3 Use {prepend}, use partial string matches for both 380 * {dbpath} and {prepend}. 381 * 4 Use {prepend}, use exact string matches for both 382 * {dbpath} and {prepend}. 383 * 384 * Note: All string comparisons are case sensitive! 385 */ 386 #if defined(FEAT_EVAL) || defined(PROTO) 387 static int 388 cs_connection(int num, char_u *dbpath, char_u *ppath) 389 { 390 int i; 391 392 if (num < 0 || num > 4 || (num > 0 && !dbpath)) 393 return FALSE; 394 395 for (i = 0; i < csinfo_size; i++) 396 { 397 if (!csinfo[i].fname) 398 continue; 399 400 if (num == 0) 401 return TRUE; 402 403 switch (num) 404 { 405 case 1: 406 if (strstr(csinfo[i].fname, (char *)dbpath)) 407 return TRUE; 408 break; 409 case 2: 410 if (strcmp(csinfo[i].fname, (char *)dbpath) == 0) 411 return TRUE; 412 break; 413 case 3: 414 if (strstr(csinfo[i].fname, (char *)dbpath) 415 && ((!ppath && !csinfo[i].ppath) 416 || (ppath 417 && csinfo[i].ppath 418 && strstr(csinfo[i].ppath, (char *)ppath)))) 419 return TRUE; 420 break; 421 case 4: 422 if ((strcmp(csinfo[i].fname, (char *)dbpath) == 0) 423 && ((!ppath && !csinfo[i].ppath) 424 || (ppath 425 && csinfo[i].ppath 426 && (strcmp(csinfo[i].ppath, (char *)ppath) == 0)))) 427 return TRUE; 428 break; 429 } 430 } 431 432 return FALSE; 433 } 434 435 #endif 436 437 438 /* 439 * PRIVATE functions 440 ****************************************************************************/ 441 442 /* 443 * Add cscope database or a directory name (to look for cscope.out) 444 * to the cscope connection list. 445 */ 446 static int 447 cs_add(exarg_T *eap UNUSED) 448 { 449 char *fname, *ppath, *flags = NULL; 450 451 if ((fname = strtok((char *)NULL, (const char *)" ")) == NULL) 452 { 453 cs_usage_msg(Add); 454 return CSCOPE_FAILURE; 455 } 456 if ((ppath = strtok((char *)NULL, (const char *)" ")) != NULL) 457 flags = strtok((char *)NULL, (const char *)" "); 458 459 return cs_add_common(fname, ppath, flags); 460 } 461 462 static void 463 cs_stat_emsg(char *fname) 464 { 465 char *stat_emsg = _("E563: stat(%s) error: %d"); 466 char *buf = alloc(strlen(stat_emsg) + MAXPATHL + 10); 467 468 if (buf != NULL) 469 { 470 (void)sprintf(buf, stat_emsg, fname, errno); 471 (void)emsg(buf); 472 vim_free(buf); 473 } 474 else 475 (void)emsg(_("E563: stat error")); 476 } 477 478 479 /* 480 * The common routine to add a new cscope connection. Called by 481 * cs_add() and cs_reset(). I really don't like to do this, but this 482 * routine uses a number of goto statements. 483 */ 484 static int 485 cs_add_common( 486 char *arg1, // filename - may contain environment variables 487 char *arg2, // prepend path - may contain environment variables 488 char *flags) 489 { 490 stat_T statbuf; 491 int ret; 492 char *fname = NULL; 493 char *fname2 = NULL; 494 char *ppath = NULL; 495 int i; 496 int len; 497 int usedlen = 0; 498 char_u *fbuf = NULL; 499 500 // get the filename (arg1), expand it, and try to stat it 501 if ((fname = alloc(MAXPATHL + 1)) == NULL) 502 goto add_err; 503 504 expand_env((char_u *)arg1, (char_u *)fname, MAXPATHL); 505 len = (int)STRLEN(fname); 506 fbuf = (char_u *)fname; 507 (void)modify_fname((char_u *)":p", FALSE, &usedlen, 508 (char_u **)&fname, &fbuf, &len); 509 if (fname == NULL) 510 goto add_err; 511 fname = (char *)vim_strnsave((char_u *)fname, len); 512 vim_free(fbuf); 513 514 ret = mch_stat(fname, &statbuf); 515 if (ret < 0) 516 { 517 staterr: 518 if (p_csverbose) 519 cs_stat_emsg(fname); 520 goto add_err; 521 } 522 523 // get the prepend path (arg2), expand it, and try to stat it 524 if (arg2 != NULL) 525 { 526 stat_T statbuf2; 527 528 if ((ppath = alloc(MAXPATHL + 1)) == NULL) 529 goto add_err; 530 531 expand_env((char_u *)arg2, (char_u *)ppath, MAXPATHL); 532 ret = mch_stat(ppath, &statbuf2); 533 if (ret < 0) 534 goto staterr; 535 } 536 537 // if filename is a directory, append the cscope database name to it 538 if (S_ISDIR(statbuf.st_mode)) 539 { 540 fname2 = alloc(strlen(CSCOPE_DBFILE) + strlen(fname) + 2); 541 if (fname2 == NULL) 542 goto add_err; 543 544 while (fname[strlen(fname)-1] == '/' 545 #ifdef MSWIN 546 || fname[strlen(fname)-1] == '\\' 547 #endif 548 ) 549 { 550 fname[strlen(fname)-1] = '\0'; 551 if (fname[0] == '\0') 552 break; 553 } 554 if (fname[0] == '\0') 555 (void)sprintf(fname2, "/%s", CSCOPE_DBFILE); 556 else 557 (void)sprintf(fname2, "%s/%s", fname, CSCOPE_DBFILE); 558 559 ret = mch_stat(fname2, &statbuf); 560 if (ret < 0) 561 { 562 if (p_csverbose) 563 cs_stat_emsg(fname2); 564 goto add_err; 565 } 566 567 i = cs_insert_filelist(fname2, ppath, flags, &statbuf); 568 } 569 else if (S_ISREG(statbuf.st_mode) || S_ISLNK(statbuf.st_mode)) 570 { 571 i = cs_insert_filelist(fname, ppath, flags, &statbuf); 572 } 573 else 574 { 575 if (p_csverbose) 576 (void)semsg( 577 _("E564: %s is not a directory or a valid cscope database"), 578 fname); 579 goto add_err; 580 } 581 582 if (i != -1) 583 { 584 if (cs_create_connection(i) == CSCOPE_FAILURE 585 || cs_read_prompt(i) == CSCOPE_FAILURE) 586 { 587 cs_release_csp(i, TRUE); 588 goto add_err; 589 } 590 591 if (p_csverbose) 592 { 593 msg_clr_eos(); 594 (void)smsg_attr(HL_ATTR(HLF_R), 595 _("Added cscope database %s"), 596 csinfo[i].fname); 597 } 598 } 599 600 vim_free(fname); 601 vim_free(fname2); 602 vim_free(ppath); 603 return CSCOPE_SUCCESS; 604 605 add_err: 606 vim_free(fname2); 607 vim_free(fname); 608 vim_free(ppath); 609 return CSCOPE_FAILURE; 610 } 611 612 613 static int 614 cs_check_for_connections(void) 615 { 616 return (cs_cnt_connections() > 0); 617 } 618 619 620 static int 621 cs_check_for_tags(void) 622 { 623 return (p_tags[0] != NUL && curbuf->b_p_tags != NULL); 624 } 625 626 627 /* 628 * Count the number of cscope connections. 629 */ 630 static int 631 cs_cnt_connections(void) 632 { 633 short i; 634 short cnt = 0; 635 636 for (i = 0; i < csinfo_size; i++) 637 { 638 if (csinfo[i].fname != NULL) 639 cnt++; 640 } 641 return cnt; 642 } 643 644 static void 645 cs_reading_emsg( 646 int idx) // connection index 647 { 648 semsg(_("E262: error reading cscope connection %d"), idx); 649 } 650 651 #define CSREAD_BUFSIZE 2048 652 /* 653 * Count the number of matches for a given cscope connection. 654 */ 655 static int 656 cs_cnt_matches(int idx) 657 { 658 char *stok; 659 char *buf; 660 int nlines = 0; 661 662 buf = alloc(CSREAD_BUFSIZE); 663 if (buf == NULL) 664 return 0; 665 for (;;) 666 { 667 if (!fgets(buf, CSREAD_BUFSIZE, csinfo[idx].fr_fp)) 668 { 669 if (feof(csinfo[idx].fr_fp)) 670 errno = EIO; 671 672 cs_reading_emsg(idx); 673 674 vim_free(buf); 675 return -1; 676 } 677 678 /* 679 * If the database is out of date, or there's some other problem, 680 * cscope will output error messages before the number-of-lines output. 681 * Display/discard any output that doesn't match what we want. 682 * Accept "\S*cscope: X lines", also matches "mlcscope". 683 * Bail out for the "Unable to search" error. 684 */ 685 if (strstr((const char *)buf, "Unable to search database") != NULL) 686 break; 687 if ((stok = strtok(buf, (const char *)" ")) == NULL) 688 continue; 689 if (strstr((const char *)stok, "cscope:") == NULL) 690 continue; 691 692 if ((stok = strtok(NULL, (const char *)" ")) == NULL) 693 continue; 694 nlines = atoi(stok); 695 if (nlines < 0) 696 { 697 nlines = 0; 698 break; 699 } 700 701 if ((stok = strtok(NULL, (const char *)" ")) == NULL) 702 continue; 703 if (strncmp((const char *)stok, "lines", 5)) 704 continue; 705 706 break; 707 } 708 709 vim_free(buf); 710 return nlines; 711 } 712 713 714 /* 715 * Creates the actual cscope command query from what the user entered. 716 */ 717 static char * 718 cs_create_cmd(char *csoption, char *pattern) 719 { 720 char *cmd; 721 short search; 722 char *pat; 723 724 switch (csoption[0]) 725 { 726 case '0' : case 's' : 727 search = 0; 728 break; 729 case '1' : case 'g' : 730 search = 1; 731 break; 732 case '2' : case 'd' : 733 search = 2; 734 break; 735 case '3' : case 'c' : 736 search = 3; 737 break; 738 case '4' : case 't' : 739 search = 4; 740 break; 741 case '6' : case 'e' : 742 search = 6; 743 break; 744 case '7' : case 'f' : 745 search = 7; 746 break; 747 case '8' : case 'i' : 748 search = 8; 749 break; 750 case '9' : case 'a' : 751 search = 9; 752 break; 753 default : 754 (void)emsg(_("E561: unknown cscope search type")); 755 cs_usage_msg(Find); 756 return NULL; 757 } 758 759 // Skip white space before the patter, except for text and pattern search, 760 // they may want to use the leading white space. 761 pat = pattern; 762 if (search != 4 && search != 6) 763 while VIM_ISWHITE(*pat) 764 ++pat; 765 766 if ((cmd = alloc(strlen(pat) + 2)) == NULL) 767 return NULL; 768 769 (void)sprintf(cmd, "%d%s", search, pat); 770 771 return cmd; 772 } 773 774 775 /* 776 * This piece of code was taken/adapted from nvi. do we need to add 777 * the BSD license notice? 778 */ 779 static int 780 cs_create_connection(int i) 781 { 782 #ifdef UNIX 783 int to_cs[2], from_cs[2]; 784 #endif 785 int len; 786 char *prog, *cmd, *ppath = NULL; 787 #ifdef MSWIN 788 int fd; 789 SECURITY_ATTRIBUTES sa; 790 PROCESS_INFORMATION pi; 791 STARTUPINFO si; 792 BOOL pipe_stdin = FALSE, pipe_stdout = FALSE; 793 HANDLE stdin_rd, stdout_rd; 794 HANDLE stdout_wr, stdin_wr; 795 BOOL created; 796 # if (defined(_MSC_VER) && (_MSC_VER >= 1300)) || defined(__MINGW32__) 797 # define OPEN_OH_ARGTYPE intptr_t 798 # else 799 # define OPEN_OH_ARGTYPE long 800 # endif 801 #endif 802 803 #if defined(UNIX) 804 /* 805 * Cscope reads from to_cs[0] and writes to from_cs[1]; vi reads from 806 * from_cs[0] and writes to to_cs[1]. 807 */ 808 to_cs[0] = to_cs[1] = from_cs[0] = from_cs[1] = -1; 809 if (pipe(to_cs) < 0 || pipe(from_cs) < 0) 810 { 811 (void)emsg(_("E566: Could not create cscope pipes")); 812 err_closing: 813 if (to_cs[0] != -1) 814 (void)close(to_cs[0]); 815 if (to_cs[1] != -1) 816 (void)close(to_cs[1]); 817 if (from_cs[0] != -1) 818 (void)close(from_cs[0]); 819 if (from_cs[1] != -1) 820 (void)close(from_cs[1]); 821 return CSCOPE_FAILURE; 822 } 823 824 switch (csinfo[i].pid = fork()) 825 { 826 case -1: 827 (void)emsg(_("E622: Could not fork for cscope")); 828 goto err_closing; 829 case 0: // child: run cscope. 830 if (dup2(to_cs[0], STDIN_FILENO) == -1) 831 PERROR("cs_create_connection 1"); 832 if (dup2(from_cs[1], STDOUT_FILENO) == -1) 833 PERROR("cs_create_connection 2"); 834 if (dup2(from_cs[1], STDERR_FILENO) == -1) 835 PERROR("cs_create_connection 3"); 836 837 // close unused 838 (void)close(to_cs[1]); 839 (void)close(from_cs[0]); 840 #else 841 // MSWIN 842 // Create pipes to communicate with cscope 843 sa.nLength = sizeof(SECURITY_ATTRIBUTES); 844 sa.bInheritHandle = TRUE; 845 sa.lpSecurityDescriptor = NULL; 846 847 if (!(pipe_stdin = CreatePipe(&stdin_rd, &stdin_wr, &sa, 0)) 848 || !(pipe_stdout = CreatePipe(&stdout_rd, &stdout_wr, &sa, 0))) 849 { 850 (void)emsg(_("E566: Could not create cscope pipes")); 851 err_closing: 852 if (pipe_stdin) 853 { 854 CloseHandle(stdin_rd); 855 CloseHandle(stdin_wr); 856 } 857 if (pipe_stdout) 858 { 859 CloseHandle(stdout_rd); 860 CloseHandle(stdout_wr); 861 } 862 return CSCOPE_FAILURE; 863 } 864 #endif 865 // expand the cscope exec for env var's 866 if ((prog = alloc(MAXPATHL + 1)) == NULL) 867 { 868 #ifdef UNIX 869 return CSCOPE_FAILURE; 870 #else 871 // MSWIN 872 goto err_closing; 873 #endif 874 } 875 expand_env((char_u *)p_csprg, (char_u *)prog, MAXPATHL); 876 877 // alloc space to hold the cscope command 878 len = (int)(strlen(prog) + strlen(csinfo[i].fname) + 32); 879 if (csinfo[i].ppath) 880 { 881 // expand the prepend path for env var's 882 if ((ppath = alloc(MAXPATHL + 1)) == NULL) 883 { 884 vim_free(prog); 885 #ifdef UNIX 886 return CSCOPE_FAILURE; 887 #else 888 // MSWIN 889 goto err_closing; 890 #endif 891 } 892 expand_env((char_u *)csinfo[i].ppath, (char_u *)ppath, MAXPATHL); 893 894 len += (int)strlen(ppath); 895 } 896 897 if (csinfo[i].flags) 898 len += (int)strlen(csinfo[i].flags); 899 900 if ((cmd = alloc(len)) == NULL) 901 { 902 vim_free(prog); 903 vim_free(ppath); 904 #ifdef UNIX 905 return CSCOPE_FAILURE; 906 #else 907 // MSWIN 908 goto err_closing; 909 #endif 910 } 911 912 // run the cscope command; is there execl for non-unix systems? 913 #if defined(UNIX) 914 (void)sprintf(cmd, "exec %s -dl -f %s", prog, csinfo[i].fname); 915 #else 916 // MSWIN 917 (void)sprintf(cmd, "%s -dl -f %s", prog, csinfo[i].fname); 918 #endif 919 if (csinfo[i].ppath != NULL) 920 { 921 (void)strcat(cmd, " -P"); 922 (void)strcat(cmd, csinfo[i].ppath); 923 } 924 if (csinfo[i].flags != NULL) 925 { 926 (void)strcat(cmd, " "); 927 (void)strcat(cmd, csinfo[i].flags); 928 } 929 # ifdef UNIX 930 // on Win32 we still need prog 931 vim_free(prog); 932 # endif 933 vim_free(ppath); 934 935 #if defined(UNIX) 936 # if defined(HAVE_SETSID) || defined(HAVE_SETPGID) 937 // Change our process group to avoid cscope receiving SIGWINCH. 938 # if defined(HAVE_SETSID) 939 (void)setsid(); 940 # else 941 if (setpgid(0, 0) == -1) 942 PERROR(_("cs_create_connection setpgid failed")); 943 # endif 944 # endif 945 if (execl("/bin/sh", "sh", "-c", cmd, (char *)NULL) == -1) 946 PERROR(_("cs_create_connection exec failed")); 947 948 exit(127); 949 // NOTREACHED 950 default: // parent. 951 /* 952 * Save the file descriptors for later duplication, and 953 * reopen as streams. 954 */ 955 if ((csinfo[i].to_fp = fdopen(to_cs[1], "w")) == NULL) 956 PERROR(_("cs_create_connection: fdopen for to_fp failed")); 957 if ((csinfo[i].fr_fp = fdopen(from_cs[0], "r")) == NULL) 958 PERROR(_("cs_create_connection: fdopen for fr_fp failed")); 959 960 // close unused 961 (void)close(to_cs[0]); 962 (void)close(from_cs[1]); 963 964 break; 965 } 966 967 #else 968 // MSWIN 969 // Create a new process to run cscope and use pipes to talk with it 970 GetStartupInfo(&si); 971 si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; 972 si.wShowWindow = SW_HIDE; // Hide child application window 973 si.hStdOutput = stdout_wr; 974 si.hStdError = stdout_wr; 975 si.hStdInput = stdin_rd; 976 created = CreateProcess(NULL, cmd, NULL, NULL, TRUE, CREATE_NEW_CONSOLE, 977 NULL, NULL, &si, &pi); 978 vim_free(prog); 979 vim_free(cmd); 980 981 if (!created) 982 { 983 PERROR(_("cs_create_connection exec failed")); 984 (void)emsg(_("E623: Could not spawn cscope process")); 985 goto err_closing; 986 } 987 // else 988 csinfo[i].pid = pi.dwProcessId; 989 csinfo[i].hProc = pi.hProcess; 990 CloseHandle(pi.hThread); 991 992 // TODO - tidy up after failure to create files on pipe handles. 993 if (((fd = _open_osfhandle((OPEN_OH_ARGTYPE)stdin_wr, 994 _O_TEXT|_O_APPEND)) < 0) 995 || ((csinfo[i].to_fp = _fdopen(fd, "w")) == NULL)) 996 PERROR(_("cs_create_connection: fdopen for to_fp failed")); 997 if (((fd = _open_osfhandle((OPEN_OH_ARGTYPE)stdout_rd, 998 _O_TEXT|_O_RDONLY)) < 0) 999 || ((csinfo[i].fr_fp = _fdopen(fd, "r")) == NULL)) 1000 PERROR(_("cs_create_connection: fdopen for fr_fp failed")); 1001 1002 // Close handles for file descriptors inherited by the cscope process 1003 CloseHandle(stdin_rd); 1004 CloseHandle(stdout_wr); 1005 1006 #endif // !UNIX 1007 1008 return CSCOPE_SUCCESS; 1009 } 1010 1011 1012 /* 1013 * Query cscope using command line interface. Parse the output and use tselect 1014 * to allow choices. Like Nvi, creates a pipe to send to/from query/cscope. 1015 * 1016 * returns TRUE if we jump to a tag or abort, FALSE if not. 1017 */ 1018 static int 1019 cs_find(exarg_T *eap) 1020 { 1021 char *opt, *pat; 1022 int i; 1023 1024 if (cs_check_for_connections() == FALSE) 1025 { 1026 (void)emsg(_("E567: no cscope connections")); 1027 return FALSE; 1028 } 1029 1030 if ((opt = strtok((char *)NULL, (const char *)" ")) == NULL) 1031 { 1032 cs_usage_msg(Find); 1033 return FALSE; 1034 } 1035 1036 pat = opt + strlen(opt) + 1; 1037 if (pat >= (char *)eap->arg + eap_arg_len) 1038 { 1039 cs_usage_msg(Find); 1040 return FALSE; 1041 } 1042 1043 /* 1044 * Let's replace the NULs written by strtok() with spaces - we need the 1045 * spaces to correctly display the quickfix/location list window's title. 1046 */ 1047 for (i = 0; i < eap_arg_len; ++i) 1048 if (NUL == eap->arg[i]) 1049 eap->arg[i] = ' '; 1050 1051 return cs_find_common(opt, pat, eap->forceit, TRUE, 1052 eap->cmdidx == CMD_lcscope, *eap->cmdlinep); 1053 } 1054 1055 1056 /* 1057 * Common code for cscope find, shared by cs_find() and ex_cstag(). 1058 */ 1059 static int 1060 cs_find_common( 1061 char *opt, 1062 char *pat, 1063 int forceit, 1064 int verbose, 1065 int use_ll UNUSED, 1066 char_u *cmdline UNUSED) 1067 { 1068 int i; 1069 char *cmd; 1070 int *nummatches; 1071 int totmatches; 1072 #ifdef FEAT_QUICKFIX 1073 char cmdletter; 1074 char *qfpos; 1075 1076 // get cmd letter 1077 switch (opt[0]) 1078 { 1079 case '0' : 1080 cmdletter = 's'; 1081 break; 1082 case '1' : 1083 cmdletter = 'g'; 1084 break; 1085 case '2' : 1086 cmdletter = 'd'; 1087 break; 1088 case '3' : 1089 cmdletter = 'c'; 1090 break; 1091 case '4' : 1092 cmdletter = 't'; 1093 break; 1094 case '6' : 1095 cmdletter = 'e'; 1096 break; 1097 case '7' : 1098 cmdletter = 'f'; 1099 break; 1100 case '8' : 1101 cmdletter = 'i'; 1102 break; 1103 case '9' : 1104 cmdletter = 'a'; 1105 break; 1106 default : 1107 cmdletter = opt[0]; 1108 } 1109 1110 qfpos = (char *)vim_strchr(p_csqf, cmdletter); 1111 if (qfpos != NULL) 1112 { 1113 qfpos++; 1114 // next symbol must be + or - 1115 if (strchr(CSQF_FLAGS, *qfpos) == NULL) 1116 { 1117 char *nf = _("E469: invalid cscopequickfix flag %c for %c"); 1118 char *buf = alloc(strlen(nf)); 1119 1120 // strlen will be enough because we use chars 1121 if (buf != NULL) 1122 { 1123 sprintf(buf, nf, *qfpos, *(qfpos-1)); 1124 (void)emsg(buf); 1125 vim_free(buf); 1126 } 1127 return FALSE; 1128 } 1129 1130 if (*qfpos != '0' 1131 && apply_autocmds(EVENT_QUICKFIXCMDPRE, (char_u *)"cscope", 1132 curbuf->b_fname, TRUE, curbuf)) 1133 { 1134 # ifdef FEAT_EVAL 1135 if (aborting()) 1136 return FALSE; 1137 # endif 1138 } 1139 } 1140 #endif 1141 1142 // create the actual command to send to cscope 1143 cmd = cs_create_cmd(opt, pat); 1144 if (cmd == NULL) 1145 return FALSE; 1146 1147 nummatches = ALLOC_MULT(int, csinfo_size); 1148 if (nummatches == NULL) 1149 { 1150 vim_free(cmd); 1151 return FALSE; 1152 } 1153 1154 // Send query to all open connections, then count the total number 1155 // of matches so we can alloc all in one swell foop. 1156 for (i = 0; i < csinfo_size; i++) 1157 nummatches[i] = 0; 1158 totmatches = 0; 1159 for (i = 0; i < csinfo_size; i++) 1160 { 1161 if (csinfo[i].fname == NULL || csinfo[i].to_fp == NULL) 1162 continue; 1163 1164 // send cmd to cscope 1165 (void)fprintf(csinfo[i].to_fp, "%s\n", cmd); 1166 (void)fflush(csinfo[i].to_fp); 1167 1168 nummatches[i] = cs_cnt_matches(i); 1169 1170 if (nummatches[i] > -1) 1171 totmatches += nummatches[i]; 1172 1173 if (nummatches[i] == 0) 1174 (void)cs_read_prompt(i); 1175 } 1176 vim_free(cmd); 1177 1178 if (totmatches == 0) 1179 { 1180 char *nf = _("E259: no matches found for cscope query %s of %s"); 1181 char *buf; 1182 1183 if (!verbose) 1184 { 1185 vim_free(nummatches); 1186 return FALSE; 1187 } 1188 1189 buf = alloc(strlen(opt) + strlen(pat) + strlen(nf)); 1190 if (buf == NULL) 1191 (void)emsg(nf); 1192 else 1193 { 1194 sprintf(buf, nf, opt, pat); 1195 (void)emsg(buf); 1196 vim_free(buf); 1197 } 1198 vim_free(nummatches); 1199 return FALSE; 1200 } 1201 1202 #ifdef FEAT_QUICKFIX 1203 if (qfpos != NULL && *qfpos != '0' && totmatches > 0) 1204 { 1205 // fill error list 1206 FILE *f; 1207 char_u *tmp = vim_tempname('c', TRUE); 1208 qf_info_T *qi = NULL; 1209 win_T *wp = NULL; 1210 1211 f = mch_fopen((char *)tmp, "w"); 1212 if (f == NULL) 1213 semsg(_(e_notopen), tmp); 1214 else 1215 { 1216 cs_file_results(f, nummatches); 1217 fclose(f); 1218 if (use_ll) // Use location list 1219 wp = curwin; 1220 // '-' starts a new error list 1221 if (qf_init(wp, tmp, (char_u *)"%f%*\\t%l%*\\t%m", 1222 *qfpos == '-', cmdline, NULL) > 0) 1223 { 1224 if (postponed_split != 0) 1225 { 1226 (void)win_split(postponed_split > 0 ? postponed_split : 0, 1227 postponed_split_flags); 1228 RESET_BINDING(curwin); 1229 postponed_split = 0; 1230 } 1231 1232 apply_autocmds(EVENT_QUICKFIXCMDPOST, (char_u *)"cscope", 1233 curbuf->b_fname, TRUE, curbuf); 1234 if (use_ll) 1235 /* 1236 * In the location list window, use the displayed location 1237 * list. Otherwise, use the location list for the window. 1238 */ 1239 qi = (bt_quickfix(wp->w_buffer) && wp->w_llist_ref != NULL) 1240 ? wp->w_llist_ref : wp->w_llist; 1241 qf_jump(qi, 0, 0, forceit); 1242 } 1243 } 1244 mch_remove(tmp); 1245 vim_free(tmp); 1246 vim_free(nummatches); 1247 return TRUE; 1248 } 1249 else 1250 #endif // FEAT_QUICKFIX 1251 { 1252 char **matches = NULL, **contexts = NULL; 1253 int matched = 0; 1254 1255 // read output 1256 cs_fill_results((char *)pat, totmatches, nummatches, &matches, 1257 &contexts, &matched); 1258 vim_free(nummatches); 1259 if (matches == NULL) 1260 return FALSE; 1261 1262 (void)cs_manage_matches(matches, contexts, matched, Store); 1263 1264 return do_tag((char_u *)pat, DT_CSCOPE, 0, forceit, verbose); 1265 } 1266 1267 } 1268 1269 /* 1270 * Print help. 1271 */ 1272 static int 1273 cs_help(exarg_T *eap UNUSED) 1274 { 1275 cscmd_T *cmdp = cs_cmds; 1276 1277 (void)msg_puts(_("cscope commands:\n")); 1278 while (cmdp->name != NULL) 1279 { 1280 char *help = _(cmdp->help); 1281 int space_cnt = 30 - vim_strsize((char_u *)help); 1282 1283 // Use %*s rather than %30s to ensure proper alignment in utf-8 1284 if (space_cnt < 0) 1285 space_cnt = 0; 1286 (void)smsg(_("%-5s: %s%*s (Usage: %s)"), 1287 cmdp->name, 1288 help, space_cnt, " ", 1289 cmdp->usage); 1290 if (strcmp(cmdp->name, "find") == 0) 1291 msg_puts(_("\n" 1292 " a: Find assignments to this symbol\n" 1293 " c: Find functions calling this function\n" 1294 " d: Find functions called by this function\n" 1295 " e: Find this egrep pattern\n" 1296 " f: Find this file\n" 1297 " g: Find this definition\n" 1298 " i: Find files #including this file\n" 1299 " s: Find this C symbol\n" 1300 " t: Find this text string\n")); 1301 1302 cmdp++; 1303 } 1304 1305 wait_return(TRUE); 1306 return 0; 1307 } 1308 1309 1310 static void 1311 clear_csinfo(int i) 1312 { 1313 csinfo[i].fname = NULL; 1314 csinfo[i].ppath = NULL; 1315 csinfo[i].flags = NULL; 1316 #if defined(UNIX) 1317 csinfo[i].st_dev = (dev_t)0; 1318 csinfo[i].st_ino = (ino_t)0; 1319 #else 1320 csinfo[i].nVolume = 0; 1321 csinfo[i].nIndexHigh = 0; 1322 csinfo[i].nIndexLow = 0; 1323 #endif 1324 csinfo[i].pid = 0; 1325 csinfo[i].fr_fp = NULL; 1326 csinfo[i].to_fp = NULL; 1327 #if defined(MSWIN) 1328 csinfo[i].hProc = NULL; 1329 #endif 1330 } 1331 1332 #ifndef UNIX 1333 static char * 1334 GetWin32Error(void) 1335 { 1336 char *msg = NULL; 1337 FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM, 1338 NULL, GetLastError(), 0, (LPSTR)&msg, 0, NULL); 1339 if (msg != NULL) 1340 { 1341 // remove trailing \r\n 1342 char *pcrlf = strstr(msg, "\r\n"); 1343 if (pcrlf != NULL) 1344 *pcrlf = '\0'; 1345 } 1346 return msg; 1347 } 1348 #endif 1349 1350 /* 1351 * Insert a new cscope database filename into the filelist. 1352 */ 1353 static int 1354 cs_insert_filelist( 1355 char *fname, 1356 char *ppath, 1357 char *flags, 1358 stat_T *sb UNUSED) 1359 { 1360 short i, j; 1361 #ifndef UNIX 1362 BY_HANDLE_FILE_INFORMATION bhfi; 1363 1364 switch (win32_fileinfo((char_u *)fname, &bhfi)) 1365 { 1366 case FILEINFO_ENC_FAIL: // enc_to_utf16() failed 1367 case FILEINFO_READ_FAIL: // CreateFile() failed 1368 if (p_csverbose) 1369 { 1370 char *cant_msg = _("E625: cannot open cscope database: %s"); 1371 char *winmsg = GetWin32Error(); 1372 1373 if (winmsg != NULL) 1374 { 1375 (void)semsg(cant_msg, winmsg); 1376 LocalFree(winmsg); 1377 } 1378 else 1379 // subst filename if can't get error text 1380 (void)semsg(cant_msg, fname); 1381 } 1382 return -1; 1383 1384 case FILEINFO_INFO_FAIL: // GetFileInformationByHandle() failed 1385 if (p_csverbose) 1386 (void)emsg(_("E626: cannot get cscope database information")); 1387 return -1; 1388 } 1389 #endif 1390 1391 i = -1; // can be set to the index of an empty item in csinfo 1392 for (j = 0; j < csinfo_size; j++) 1393 { 1394 if (csinfo[j].fname != NULL 1395 #if defined(UNIX) 1396 && csinfo[j].st_dev == sb->st_dev && csinfo[j].st_ino == sb->st_ino 1397 #else 1398 // compare pathnames first 1399 && ((fullpathcmp((char_u *)csinfo[j].fname, 1400 (char_u *)fname, FALSE, TRUE) & FPC_SAME) 1401 // test index file attributes too 1402 || (csinfo[j].nVolume == bhfi.dwVolumeSerialNumber 1403 && csinfo[j].nIndexHigh == bhfi.nFileIndexHigh 1404 && csinfo[j].nIndexLow == bhfi.nFileIndexLow)) 1405 #endif 1406 ) 1407 { 1408 if (p_csverbose) 1409 (void)emsg(_("E568: duplicate cscope database not added")); 1410 return -1; 1411 } 1412 1413 if (csinfo[j].fname == NULL && i == -1) 1414 i = j; // remember first empty entry 1415 } 1416 1417 if (i == -1) 1418 { 1419 i = csinfo_size; 1420 if (csinfo_size == 0) 1421 { 1422 // First time allocation: allocate only 1 connection. It should 1423 // be enough for most users. If more is needed, csinfo will be 1424 // reallocated. 1425 csinfo_size = 1; 1426 csinfo = ALLOC_CLEAR_ONE(csinfo_T); 1427 } 1428 else 1429 { 1430 csinfo_T *t_csinfo = csinfo; 1431 1432 // Reallocate space for more connections. 1433 csinfo_size *= 2; 1434 csinfo = vim_realloc(csinfo, sizeof(csinfo_T)*csinfo_size); 1435 if (csinfo == NULL) 1436 { 1437 vim_free(t_csinfo); 1438 csinfo_size = 0; 1439 } 1440 } 1441 if (csinfo == NULL) 1442 return -1; 1443 for (j = csinfo_size/2; j < csinfo_size; j++) 1444 clear_csinfo(j); 1445 } 1446 1447 if ((csinfo[i].fname = alloc(strlen(fname)+1)) == NULL) 1448 return -1; 1449 1450 (void)strcpy(csinfo[i].fname, (const char *)fname); 1451 1452 if (ppath != NULL) 1453 { 1454 if ((csinfo[i].ppath = alloc(strlen(ppath) + 1)) == NULL) 1455 { 1456 VIM_CLEAR(csinfo[i].fname); 1457 return -1; 1458 } 1459 (void)strcpy(csinfo[i].ppath, (const char *)ppath); 1460 } else 1461 csinfo[i].ppath = NULL; 1462 1463 if (flags != NULL) 1464 { 1465 if ((csinfo[i].flags = alloc(strlen(flags) + 1)) == NULL) 1466 { 1467 VIM_CLEAR(csinfo[i].fname); 1468 VIM_CLEAR(csinfo[i].ppath); 1469 return -1; 1470 } 1471 (void)strcpy(csinfo[i].flags, (const char *)flags); 1472 } else 1473 csinfo[i].flags = NULL; 1474 1475 #if defined(UNIX) 1476 csinfo[i].st_dev = sb->st_dev; 1477 csinfo[i].st_ino = sb->st_ino; 1478 1479 #else 1480 csinfo[i].nVolume = bhfi.dwVolumeSerialNumber; 1481 csinfo[i].nIndexLow = bhfi.nFileIndexLow; 1482 csinfo[i].nIndexHigh = bhfi.nFileIndexHigh; 1483 #endif 1484 return i; 1485 } 1486 1487 1488 /* 1489 * Find cscope command in command table. 1490 */ 1491 static cscmd_T * 1492 cs_lookup_cmd(exarg_T *eap) 1493 { 1494 cscmd_T *cmdp; 1495 char *stok; 1496 size_t len; 1497 1498 if (eap->arg == NULL) 1499 return NULL; 1500 1501 // Store length of eap->arg before it gets modified by strtok(). 1502 eap_arg_len = (int)STRLEN(eap->arg); 1503 1504 if ((stok = strtok((char *)(eap->arg), (const char *)" ")) == NULL) 1505 return NULL; 1506 1507 len = strlen(stok); 1508 for (cmdp = cs_cmds; cmdp->name != NULL; ++cmdp) 1509 { 1510 if (strncmp((const char *)(stok), cmdp->name, len) == 0) 1511 return (cmdp); 1512 } 1513 return NULL; 1514 } 1515 1516 1517 /* 1518 * Nuke em. 1519 */ 1520 static int 1521 cs_kill(exarg_T *eap UNUSED) 1522 { 1523 char *stok; 1524 short i; 1525 1526 if ((stok = strtok((char *)NULL, (const char *)" ")) == NULL) 1527 { 1528 cs_usage_msg(Kill); 1529 return CSCOPE_FAILURE; 1530 } 1531 1532 // only single digit positive and negative integers are allowed 1533 if ((strlen(stok) < 2 && VIM_ISDIGIT((int)(stok[0]))) 1534 || (strlen(stok) < 3 && stok[0] == '-' 1535 && VIM_ISDIGIT((int)(stok[1])))) 1536 i = atoi(stok); 1537 else 1538 { 1539 // It must be part of a name. We will try to find a match 1540 // within all the names in the csinfo data structure 1541 for (i = 0; i < csinfo_size; i++) 1542 { 1543 if (csinfo[i].fname != NULL && strstr(csinfo[i].fname, stok)) 1544 break; 1545 } 1546 } 1547 1548 if ((i != -1) && (i >= csinfo_size || i < -1 || csinfo[i].fname == NULL)) 1549 { 1550 if (p_csverbose) 1551 (void)semsg(_("E261: cscope connection %s not found"), stok); 1552 } 1553 else 1554 { 1555 if (i == -1) 1556 { 1557 for (i = 0; i < csinfo_size; i++) 1558 { 1559 if (csinfo[i].fname) 1560 cs_kill_execute(i, csinfo[i].fname); 1561 } 1562 } 1563 else 1564 cs_kill_execute(i, stok); 1565 } 1566 1567 return 0; 1568 } 1569 1570 1571 /* 1572 * Actually kills a specific cscope connection. 1573 */ 1574 static void 1575 cs_kill_execute( 1576 int i, // cscope table index 1577 char *cname) // cscope database name 1578 { 1579 if (p_csverbose) 1580 { 1581 msg_clr_eos(); 1582 (void)smsg_attr(HL_ATTR(HLF_R) | MSG_HIST, 1583 _("cscope connection %s closed"), cname); 1584 } 1585 cs_release_csp(i, TRUE); 1586 } 1587 1588 1589 /* 1590 * Convert the cscope output into a ctags style entry (as might be found 1591 * in a ctags tags file). there's one catch though: cscope doesn't tell you 1592 * the type of the tag you are looking for. for example, in Darren Hiebert's 1593 * ctags (the one that comes with vim), #define's use a line number to find the 1594 * tag in a file while function definitions use a regexp search pattern. 1595 * 1596 * I'm going to always use the line number because cscope does something 1597 * quirky (and probably other things i don't know about): 1598 * 1599 * if you have "# define" in your source file, which is 1600 * perfectly legal, cscope thinks you have "#define". this 1601 * will result in a failed regexp search. :( 1602 * 1603 * Besides, even if this particular case didn't happen, the search pattern 1604 * would still have to be modified to escape all the special regular expression 1605 * characters to comply with ctags formatting. 1606 */ 1607 static char * 1608 cs_make_vim_style_matches( 1609 char *fname, 1610 char *slno, 1611 char *search, 1612 char *tagstr) 1613 { 1614 // vim style is ctags: 1615 // 1616 // <tagstr>\t<filename>\t<linenum_or_search>"\t<extra> 1617 // 1618 // but as mentioned above, we'll always use the line number and 1619 // put the search pattern (if one exists) as "extra" 1620 // 1621 // buf is used as part of vim's method of handling tags, and 1622 // (i think) vim frees it when you pop your tags and get replaced 1623 // by new ones on the tag stack. 1624 char *buf; 1625 int amt; 1626 1627 if (search != NULL) 1628 { 1629 amt = (int)(strlen(fname) + strlen(slno) + strlen(tagstr) + strlen(search)+6); 1630 if ((buf = alloc(amt)) == NULL) 1631 return NULL; 1632 1633 (void)sprintf(buf, "%s\t%s\t%s;\"\t%s", tagstr, fname, slno, search); 1634 } 1635 else 1636 { 1637 amt = (int)(strlen(fname) + strlen(slno) + strlen(tagstr) + 5); 1638 if ((buf = alloc(amt)) == NULL) 1639 return NULL; 1640 1641 (void)sprintf(buf, "%s\t%s\t%s;\"", tagstr, fname, slno); 1642 } 1643 1644 return buf; 1645 } 1646 1647 1648 /* 1649 * This is kind of hokey, but i don't see an easy way round this. 1650 * 1651 * Store: keep a ptr to the (malloc'd) memory of matches originally 1652 * generated from cs_find(). the matches are originally lines directly 1653 * from cscope output, but transformed to look like something out of a 1654 * ctags. see cs_make_vim_style_matches for more details. 1655 * 1656 * Get: used only from cs_fgets(), this simulates a vim_fgets() to return 1657 * the next line from the cscope output. it basically keeps track of which 1658 * lines have been "used" and returns the next one. 1659 * 1660 * Free: frees up everything and resets 1661 * 1662 * Print: prints the tags 1663 */ 1664 static char * 1665 cs_manage_matches( 1666 char **matches, 1667 char **contexts, 1668 int totmatches, 1669 mcmd_e cmd) 1670 { 1671 static char **mp = NULL; 1672 static char **cp = NULL; 1673 static int cnt = -1; 1674 static int next = -1; 1675 char *p = NULL; 1676 1677 switch (cmd) 1678 { 1679 case Store: 1680 assert(matches != NULL); 1681 assert(totmatches > 0); 1682 if (mp != NULL || cp != NULL) 1683 (void)cs_manage_matches(NULL, NULL, -1, Free); 1684 mp = matches; 1685 cp = contexts; 1686 cnt = totmatches; 1687 next = 0; 1688 break; 1689 case Get: 1690 if (next >= cnt) 1691 return NULL; 1692 1693 p = mp[next]; 1694 next++; 1695 break; 1696 case Free: 1697 if (mp != NULL) 1698 { 1699 if (cnt > 0) 1700 while (cnt--) 1701 { 1702 vim_free(mp[cnt]); 1703 if (cp != NULL) 1704 vim_free(cp[cnt]); 1705 } 1706 vim_free(mp); 1707 vim_free(cp); 1708 } 1709 mp = NULL; 1710 cp = NULL; 1711 cnt = 0; 1712 next = 0; 1713 break; 1714 case Print: 1715 cs_print_tags_priv(mp, cp, cnt); 1716 break; 1717 default: // should not reach here 1718 iemsg(_("E570: fatal error in cs_manage_matches")); 1719 return NULL; 1720 } 1721 1722 return p; 1723 } 1724 1725 1726 /* 1727 * Parse cscope output. 1728 */ 1729 static char * 1730 cs_parse_results( 1731 int cnumber, 1732 char *buf, 1733 int bufsize, 1734 char **context, 1735 char **linenumber, 1736 char **search) 1737 { 1738 int ch; 1739 char *p; 1740 char *name; 1741 1742 if (fgets(buf, bufsize, csinfo[cnumber].fr_fp) == NULL) 1743 { 1744 if (feof(csinfo[cnumber].fr_fp)) 1745 errno = EIO; 1746 1747 cs_reading_emsg(cnumber); 1748 1749 return NULL; 1750 } 1751 1752 // If the line's too long for the buffer, discard it. 1753 if ((p = strchr(buf, '\n')) == NULL) 1754 { 1755 while ((ch = getc(csinfo[cnumber].fr_fp)) != EOF && ch != '\n') 1756 ; 1757 return NULL; 1758 } 1759 *p = '\0'; 1760 1761 /* 1762 * cscope output is in the following format: 1763 * 1764 * <filename> <context> <line number> <pattern> 1765 */ 1766 if ((name = strtok((char *)buf, (const char *)" ")) == NULL) 1767 return NULL; 1768 if ((*context = strtok(NULL, (const char *)" ")) == NULL) 1769 return NULL; 1770 if ((*linenumber = strtok(NULL, (const char *)" ")) == NULL) 1771 return NULL; 1772 *search = *linenumber + strlen(*linenumber) + 1; // +1 to skip \0 1773 1774 // --- nvi --- 1775 // If the file is older than the cscope database, that is, 1776 // the database was built since the file was last modified, 1777 // or there wasn't a search string, use the line number. 1778 if (strcmp(*search, "<unknown>") == 0) 1779 *search = NULL; 1780 1781 name = cs_resolve_file(cnumber, name); 1782 return name; 1783 } 1784 1785 #ifdef FEAT_QUICKFIX 1786 /* 1787 * Write cscope find results to file. 1788 */ 1789 static void 1790 cs_file_results(FILE *f, int *nummatches_a) 1791 { 1792 int i, j; 1793 char *buf; 1794 char *search, *slno; 1795 char *fullname; 1796 char *cntx; 1797 char *context; 1798 1799 buf = alloc(CSREAD_BUFSIZE); 1800 if (buf == NULL) 1801 return; 1802 1803 for (i = 0; i < csinfo_size; i++) 1804 { 1805 if (nummatches_a[i] < 1) 1806 continue; 1807 1808 for (j = 0; j < nummatches_a[i]; j++) 1809 { 1810 if ((fullname = cs_parse_results(i, buf, CSREAD_BUFSIZE, &cntx, 1811 &slno, &search)) == NULL) 1812 continue; 1813 1814 context = alloc(strlen(cntx)+5); 1815 if (context == NULL) 1816 { 1817 vim_free(fullname); 1818 continue; 1819 } 1820 1821 if (strcmp(cntx, "<global>")==0) 1822 strcpy(context, "<<global>>"); 1823 else 1824 sprintf(context, "<<%s>>", cntx); 1825 1826 if (search == NULL) 1827 fprintf(f, "%s\t%s\t%s\n", fullname, slno, context); 1828 else 1829 fprintf(f, "%s\t%s\t%s %s\n", fullname, slno, context, search); 1830 1831 vim_free(context); 1832 vim_free(fullname); 1833 } // for all matches 1834 1835 (void)cs_read_prompt(i); 1836 1837 } // for all cscope connections 1838 vim_free(buf); 1839 } 1840 #endif 1841 1842 /* 1843 * Get parsed cscope output and calls cs_make_vim_style_matches to convert 1844 * into ctags format. 1845 * When there are no matches sets "*matches_p" to NULL. 1846 */ 1847 static void 1848 cs_fill_results( 1849 char *tagstr, 1850 int totmatches, 1851 int *nummatches_a, 1852 char ***matches_p, 1853 char ***cntxts_p, 1854 int *matched) 1855 { 1856 int i, j; 1857 char *buf; 1858 char *search, *slno; 1859 int totsofar = 0; 1860 char **matches = NULL; 1861 char **cntxts = NULL; 1862 char *fullname; 1863 char *cntx; 1864 1865 assert(totmatches > 0); 1866 1867 buf = alloc(CSREAD_BUFSIZE); 1868 if (buf == NULL) 1869 return; 1870 1871 if ((matches = ALLOC_MULT(char *, totmatches)) == NULL) 1872 goto parse_out; 1873 if ((cntxts = ALLOC_MULT(char *, totmatches)) == NULL) 1874 goto parse_out; 1875 1876 for (i = 0; i < csinfo_size; i++) 1877 { 1878 if (nummatches_a[i] < 1) 1879 continue; 1880 1881 for (j = 0; j < nummatches_a[i]; j++) 1882 { 1883 if ((fullname = cs_parse_results(i, buf, CSREAD_BUFSIZE, &cntx, 1884 &slno, &search)) == NULL) 1885 continue; 1886 1887 matches[totsofar] = cs_make_vim_style_matches(fullname, slno, 1888 search, tagstr); 1889 1890 vim_free(fullname); 1891 1892 if (strcmp(cntx, "<global>") == 0) 1893 cntxts[totsofar] = NULL; 1894 else 1895 // note: if vim_strsave returns NULL, then the context 1896 // will be "<global>", which is misleading. 1897 cntxts[totsofar] = (char *)vim_strsave((char_u *)cntx); 1898 1899 if (matches[totsofar] != NULL) 1900 totsofar++; 1901 1902 } // for all matches 1903 1904 (void)cs_read_prompt(i); 1905 1906 } // for all cscope connections 1907 1908 parse_out: 1909 if (totsofar == 0) 1910 { 1911 // No matches, free the arrays and return NULL in "*matches_p". 1912 VIM_CLEAR(matches); 1913 VIM_CLEAR(cntxts); 1914 } 1915 *matched = totsofar; 1916 *matches_p = matches; 1917 *cntxts_p = cntxts; 1918 1919 vim_free(buf); 1920 } 1921 1922 1923 /* 1924 * get the requested path components 1925 */ 1926 static char * 1927 cs_pathcomponents(char *path) 1928 { 1929 int i; 1930 char *s; 1931 1932 if (p_cspc == 0) 1933 return path; 1934 1935 s = path + strlen(path) - 1; 1936 for (i = 0; i < p_cspc; ++i) 1937 while (s > path && *--s != '/' 1938 #ifdef MSWIN 1939 && *--s != '\\' 1940 #endif 1941 ) 1942 ; 1943 if ((s > path && *s == '/') 1944 #ifdef MSWIN 1945 || (s > path && *s == '\\') 1946 #endif 1947 ) 1948 ++s; 1949 return s; 1950 } 1951 1952 /* 1953 * Called from cs_manage_matches(). 1954 */ 1955 static void 1956 cs_print_tags_priv(char **matches, char **cntxts, int num_matches) 1957 { 1958 char *buf = NULL; 1959 char *t_buf; 1960 int bufsize = 0; // Track available bufsize 1961 int newsize = 0; 1962 char *ptag; 1963 char *fname, *lno, *extra, *tbuf; 1964 int i, idx, num; 1965 char *globalcntx = "GLOBAL"; 1966 char *cntxformat = " <<%s>>"; 1967 char *context; 1968 char *cstag_msg = _("Cscope tag: %s"); 1969 char *csfmt_str = "%4d %6s "; 1970 1971 assert(num_matches > 0); 1972 1973 if ((tbuf = alloc(strlen(matches[0]) + 1)) == NULL) 1974 return; 1975 1976 strcpy(tbuf, matches[0]); 1977 ptag = strtok(tbuf, "\t"); 1978 if (ptag == NULL) 1979 { 1980 vim_free(tbuf); 1981 return; 1982 } 1983 1984 newsize = (int)(strlen(cstag_msg) + strlen(ptag)); 1985 buf = alloc(newsize); 1986 if (buf != NULL) 1987 { 1988 bufsize = newsize; 1989 (void)sprintf(buf, cstag_msg, ptag); 1990 msg_puts_attr(buf, HL_ATTR(HLF_T)); 1991 } 1992 1993 vim_free(tbuf); 1994 1995 msg_puts_attr(_("\n # line"), HL_ATTR(HLF_T)); // strlen is 7 1996 msg_advance(msg_col + 2); 1997 msg_puts_attr(_("filename / context / line\n"), HL_ATTR(HLF_T)); 1998 1999 num = 1; 2000 for (i = 0; i < num_matches; i++) 2001 { 2002 idx = i; 2003 2004 // if we really wanted to, we could avoid this malloc and strcpy 2005 // by parsing matches[i] on the fly and placing stuff into buf 2006 // directly, but that's too much of a hassle 2007 if ((tbuf = alloc(strlen(matches[idx]) + 1)) == NULL) 2008 continue; 2009 (void)strcpy(tbuf, matches[idx]); 2010 2011 if (strtok(tbuf, (const char *)"\t") == NULL 2012 || (fname = strtok(NULL, (const char *)"\t")) == NULL 2013 || (lno = strtok(NULL, (const char *)"\t")) == NULL) 2014 { 2015 vim_free(tbuf); 2016 continue; 2017 } 2018 extra = strtok(NULL, (const char *)"\t"); 2019 2020 lno[strlen(lno)-2] = '\0'; // ignore ;" at the end 2021 2022 // hopefully 'num' (num of matches) will be less than 10^16 2023 newsize = (int)(strlen(csfmt_str) + 16 + strlen(lno)); 2024 if (bufsize < newsize) 2025 { 2026 t_buf = buf; 2027 buf = vim_realloc(buf, newsize); 2028 if (buf == NULL) 2029 { 2030 bufsize = 0; 2031 vim_free(t_buf); 2032 } 2033 else 2034 bufsize = newsize; 2035 } 2036 if (buf != NULL) 2037 { 2038 // csfmt_str = "%4d %6s "; 2039 (void)sprintf(buf, csfmt_str, num, lno); 2040 msg_puts_attr(buf, HL_ATTR(HLF_CM)); 2041 } 2042 msg_outtrans_long_attr((char_u *)cs_pathcomponents(fname), 2043 HL_ATTR(HLF_CM)); 2044 2045 // compute the required space for the context 2046 if (cntxts[idx] != NULL) 2047 context = cntxts[idx]; 2048 else 2049 context = globalcntx; 2050 newsize = (int)(strlen(context) + strlen(cntxformat)); 2051 2052 if (bufsize < newsize) 2053 { 2054 t_buf = buf; 2055 buf = vim_realloc(buf, newsize); 2056 if (buf == NULL) 2057 { 2058 bufsize = 0; 2059 vim_free(t_buf); 2060 } 2061 else 2062 bufsize = newsize; 2063 } 2064 if (buf != NULL) 2065 { 2066 (void)sprintf(buf, cntxformat, context); 2067 2068 // print the context only if it fits on the same line 2069 if (msg_col + (int)strlen(buf) >= (int)Columns) 2070 msg_putchar('\n'); 2071 msg_advance(12); 2072 msg_outtrans_long_attr((char_u *)buf, 0); 2073 msg_putchar('\n'); 2074 } 2075 if (extra != NULL) 2076 { 2077 msg_advance(13); 2078 msg_outtrans_long_attr((char_u *)extra, 0); 2079 } 2080 2081 vim_free(tbuf); // only after printing extra due to strtok use 2082 2083 if (msg_col) 2084 msg_putchar('\n'); 2085 2086 ui_breakcheck(); 2087 if (got_int) 2088 { 2089 got_int = FALSE; // don't print any more matches 2090 break; 2091 } 2092 2093 num++; 2094 } // for all matches 2095 2096 vim_free(buf); 2097 } 2098 2099 2100 /* 2101 * Read a cscope prompt (basically, skip over the ">> "). 2102 */ 2103 static int 2104 cs_read_prompt(int i) 2105 { 2106 int ch; 2107 char *buf = NULL; // buffer for possible error message from cscope 2108 int bufpos = 0; 2109 char *cs_emsg; 2110 int maxlen; 2111 static char *eprompt = "Press the RETURN key to continue:"; 2112 int epromptlen = (int)strlen(eprompt); 2113 int n; 2114 2115 cs_emsg = _("E609: Cscope error: %s"); 2116 // compute maximum allowed len for Cscope error message 2117 maxlen = (int)(IOSIZE - strlen(cs_emsg)); 2118 2119 for (;;) 2120 { 2121 while ((ch = getc(csinfo[i].fr_fp)) != EOF && ch != CSCOPE_PROMPT[0]) 2122 // if there is room and char is printable 2123 if (bufpos < maxlen - 1 && vim_isprintc(ch)) 2124 { 2125 if (buf == NULL) // lazy buffer allocation 2126 buf = alloc(maxlen); 2127 if (buf != NULL) 2128 { 2129 // append character to the message 2130 buf[bufpos++] = ch; 2131 buf[bufpos] = NUL; 2132 if (bufpos >= epromptlen 2133 && strcmp(&buf[bufpos - epromptlen], eprompt) == 0) 2134 { 2135 // remove eprompt from buf 2136 buf[bufpos - epromptlen] = NUL; 2137 2138 // print message to user 2139 (void)semsg(cs_emsg, buf); 2140 2141 // send RETURN to cscope 2142 (void)putc('\n', csinfo[i].to_fp); 2143 (void)fflush(csinfo[i].to_fp); 2144 2145 // clear buf 2146 bufpos = 0; 2147 buf[bufpos] = NUL; 2148 } 2149 } 2150 } 2151 2152 for (n = 0; n < (int)strlen(CSCOPE_PROMPT); ++n) 2153 { 2154 if (n > 0) 2155 ch = getc(csinfo[i].fr_fp); 2156 if (ch == EOF) 2157 { 2158 if (buf != NULL && buf[0] != NUL) 2159 (void)semsg(cs_emsg, buf); 2160 else if (p_csverbose) 2161 cs_reading_emsg(i); // don't have additional information 2162 cs_release_csp(i, TRUE); 2163 vim_free(buf); 2164 return CSCOPE_FAILURE; 2165 } 2166 2167 if (ch != CSCOPE_PROMPT[n]) 2168 { 2169 ch = EOF; 2170 break; 2171 } 2172 } 2173 2174 if (ch == EOF) 2175 continue; // didn't find the prompt 2176 break; // did find the prompt 2177 } 2178 2179 vim_free(buf); 2180 return CSCOPE_SUCCESS; 2181 } 2182 2183 #if defined(UNIX) && defined(SIGALRM) 2184 /* 2185 * Used to catch and ignore SIGALRM below. 2186 */ 2187 static RETSIGTYPE 2188 sig_handler SIGDEFARG(sigarg) 2189 { 2190 // do nothing 2191 SIGRETURN; 2192 } 2193 #endif 2194 2195 /* 2196 * Does the actual free'ing for the cs ptr with an optional flag of whether 2197 * or not to free the filename. Called by cs_kill and cs_reset. 2198 */ 2199 static void 2200 cs_release_csp(int i, int freefnpp) 2201 { 2202 /* 2203 * Trying to exit normally (not sure whether it is fit to UNIX cscope 2204 */ 2205 if (csinfo[i].to_fp != NULL) 2206 { 2207 (void)fputs("q\n", csinfo[i].to_fp); 2208 (void)fflush(csinfo[i].to_fp); 2209 } 2210 #if defined(UNIX) 2211 { 2212 int waitpid_errno; 2213 int pstat; 2214 pid_t pid; 2215 2216 # if defined(HAVE_SIGACTION) 2217 struct sigaction sa, old; 2218 2219 // Use sigaction() to limit the waiting time to two seconds. 2220 sigemptyset(&sa.sa_mask); 2221 sa.sa_handler = sig_handler; 2222 # ifdef SA_NODEFER 2223 sa.sa_flags = SA_NODEFER; 2224 # else 2225 sa.sa_flags = 0; 2226 # endif 2227 sigaction(SIGALRM, &sa, &old); 2228 alarm(2); // 2 sec timeout 2229 2230 // Block until cscope exits or until timer expires 2231 pid = waitpid(csinfo[i].pid, &pstat, 0); 2232 waitpid_errno = errno; 2233 2234 // cancel pending alarm if still there and restore signal 2235 alarm(0); 2236 sigaction(SIGALRM, &old, NULL); 2237 # else 2238 int waited; 2239 2240 // Can't use sigaction(), loop for two seconds. First yield the CPU 2241 // to give cscope a chance to exit quickly. 2242 sleep(0); 2243 for (waited = 0; waited < 40; ++waited) 2244 { 2245 pid = waitpid(csinfo[i].pid, &pstat, WNOHANG); 2246 waitpid_errno = errno; 2247 if (pid != 0) 2248 break; // break unless the process is still running 2249 mch_delay(50L, 0); // sleep 50 ms 2250 } 2251 # endif 2252 /* 2253 * If the cscope process is still running: kill it. 2254 * Safety check: If the PID would be zero here, the entire X session 2255 * would be killed. -1 and 1 are dangerous as well. 2256 */ 2257 if (pid < 0 && csinfo[i].pid > 1) 2258 { 2259 # ifdef ECHILD 2260 int alive = TRUE; 2261 2262 if (waitpid_errno == ECHILD) 2263 { 2264 /* 2265 * When using 'vim -g', vim is forked and cscope process is 2266 * no longer a child process but a sibling. So waitpid() 2267 * fails with errno being ECHILD (No child processes). 2268 * Don't send SIGKILL to cscope immediately but wait 2269 * (polling) for it to exit normally as result of sending 2270 * the "q" command, hence giving it a chance to clean up 2271 * its temporary files. 2272 */ 2273 int waited; 2274 2275 sleep(0); 2276 for (waited = 0; waited < 40; ++waited) 2277 { 2278 // Check whether cscope process is still alive 2279 if (kill(csinfo[i].pid, 0) != 0) 2280 { 2281 alive = FALSE; // cscope process no longer exists 2282 break; 2283 } 2284 mch_delay(50L, 0); // sleep 50 ms 2285 } 2286 } 2287 if (alive) 2288 # endif 2289 { 2290 kill(csinfo[i].pid, SIGKILL); 2291 (void)waitpid(csinfo[i].pid, &pstat, 0); 2292 } 2293 } 2294 } 2295 #else // !UNIX 2296 if (csinfo[i].hProc != NULL) 2297 { 2298 // Give cscope a chance to exit normally 2299 if (WaitForSingleObject(csinfo[i].hProc, 1000) == WAIT_TIMEOUT) 2300 TerminateProcess(csinfo[i].hProc, 0); 2301 CloseHandle(csinfo[i].hProc); 2302 } 2303 #endif 2304 2305 if (csinfo[i].fr_fp != NULL) 2306 (void)fclose(csinfo[i].fr_fp); 2307 if (csinfo[i].to_fp != NULL) 2308 (void)fclose(csinfo[i].to_fp); 2309 2310 if (freefnpp) 2311 { 2312 vim_free(csinfo[i].fname); 2313 vim_free(csinfo[i].ppath); 2314 vim_free(csinfo[i].flags); 2315 } 2316 2317 clear_csinfo(i); 2318 } 2319 2320 2321 /* 2322 * Calls cs_kill on all cscope connections then reinits. 2323 */ 2324 static int 2325 cs_reset(exarg_T *eap UNUSED) 2326 { 2327 char **dblist = NULL, **pplist = NULL, **fllist = NULL; 2328 int i; 2329 char buf[20]; // for sprintf " (#%d)" 2330 2331 if (csinfo_size == 0) 2332 return CSCOPE_SUCCESS; 2333 2334 // malloc our db and ppath list 2335 dblist = ALLOC_MULT(char *, csinfo_size); 2336 pplist = ALLOC_MULT(char *, csinfo_size); 2337 fllist = ALLOC_MULT(char *, csinfo_size); 2338 if (dblist == NULL || pplist == NULL || fllist == NULL) 2339 { 2340 vim_free(dblist); 2341 vim_free(pplist); 2342 vim_free(fllist); 2343 return CSCOPE_FAILURE; 2344 } 2345 2346 for (i = 0; i < csinfo_size; i++) 2347 { 2348 dblist[i] = csinfo[i].fname; 2349 pplist[i] = csinfo[i].ppath; 2350 fllist[i] = csinfo[i].flags; 2351 if (csinfo[i].fname != NULL) 2352 cs_release_csp(i, FALSE); 2353 } 2354 2355 // rebuild the cscope connection list 2356 for (i = 0; i < csinfo_size; i++) 2357 { 2358 if (dblist[i] != NULL) 2359 { 2360 cs_add_common(dblist[i], pplist[i], fllist[i]); 2361 if (p_csverbose) 2362 { 2363 // don't use smsg_attr() because we want to display the 2364 // connection number in the same line as 2365 // "Added cscope database..." 2366 sprintf(buf, " (#%d)", i); 2367 msg_puts_attr(buf, HL_ATTR(HLF_R)); 2368 } 2369 } 2370 vim_free(dblist[i]); 2371 vim_free(pplist[i]); 2372 vim_free(fllist[i]); 2373 } 2374 vim_free(dblist); 2375 vim_free(pplist); 2376 vim_free(fllist); 2377 2378 if (p_csverbose) 2379 msg_attr(_("All cscope databases reset"), HL_ATTR(HLF_R) | MSG_HIST); 2380 return CSCOPE_SUCCESS; 2381 } 2382 2383 2384 /* 2385 * Construct the full pathname to a file found in the cscope database. 2386 * (Prepends ppath, if there is one and if it's not already prepended, 2387 * otherwise just uses the name found.) 2388 * 2389 * We need to prepend the prefix because on some cscope's (e.g., the one that 2390 * ships with Solaris 2.6), the output never has the prefix prepended. 2391 * Contrast this with my development system (Digital Unix), which does. 2392 */ 2393 static char * 2394 cs_resolve_file(int i, char *name) 2395 { 2396 char *fullname; 2397 int len; 2398 char_u *csdir = NULL; 2399 2400 /* 2401 * Ppath is freed when we destroy the cscope connection. 2402 * Fullname is freed after cs_make_vim_style_matches, after it's been 2403 * copied into the tag buffer used by Vim. 2404 */ 2405 len = (int)(strlen(name) + 2); 2406 if (csinfo[i].ppath != NULL) 2407 len += (int)strlen(csinfo[i].ppath); 2408 else if (p_csre && csinfo[i].fname != NULL) 2409 { 2410 // If 'cscoperelative' is set and ppath is not set, use cscope.out 2411 // path in path resolution. 2412 csdir = alloc(MAXPATHL); 2413 if (csdir != NULL) 2414 { 2415 vim_strncpy(csdir, (char_u *)csinfo[i].fname, 2416 gettail((char_u *)csinfo[i].fname) 2417 - (char_u *)csinfo[i].fname); 2418 len += (int)STRLEN(csdir); 2419 } 2420 } 2421 2422 // Note/example: this won't work if the cscope output already starts 2423 // "../.." and the prefix path is also "../..". if something like this 2424 // happens, you are screwed up and need to fix how you're using cscope. 2425 if (csinfo[i].ppath != NULL 2426 && (strncmp(name, csinfo[i].ppath, strlen(csinfo[i].ppath)) != 0) 2427 && (name[0] != '/') 2428 #ifdef MSWIN 2429 && name[0] != '\\' && name[1] != ':' 2430 #endif 2431 ) 2432 { 2433 if ((fullname = alloc(len)) != NULL) 2434 (void)sprintf(fullname, "%s/%s", csinfo[i].ppath, name); 2435 } 2436 else if (csdir != NULL && csinfo[i].fname != NULL && *csdir != NUL) 2437 { 2438 // Check for csdir to be non empty to avoid empty path concatenated to 2439 // cscope output. 2440 fullname = (char *)concat_fnames(csdir, (char_u *)name, TRUE); 2441 } 2442 else 2443 { 2444 fullname = (char *)vim_strsave((char_u *)name); 2445 } 2446 2447 vim_free(csdir); 2448 return fullname; 2449 } 2450 2451 2452 /* 2453 * Show all cscope connections. 2454 */ 2455 static int 2456 cs_show(exarg_T *eap UNUSED) 2457 { 2458 short i; 2459 if (cs_cnt_connections() == 0) 2460 msg_puts(_("no cscope connections\n")); 2461 else 2462 { 2463 msg_puts_attr( 2464 _(" # pid database name prepend path\n"), 2465 HL_ATTR(HLF_T)); 2466 for (i = 0; i < csinfo_size; i++) 2467 { 2468 if (csinfo[i].fname == NULL) 2469 continue; 2470 2471 if (csinfo[i].ppath != NULL) 2472 (void)smsg("%2d %-5ld %-34s %-32s", 2473 i, (long)csinfo[i].pid, csinfo[i].fname, csinfo[i].ppath); 2474 else 2475 (void)smsg("%2d %-5ld %-34s <none>", 2476 i, (long)csinfo[i].pid, csinfo[i].fname); 2477 } 2478 } 2479 2480 wait_return(TRUE); 2481 return CSCOPE_SUCCESS; 2482 } 2483 2484 2485 /* 2486 * Only called when VIM exits to quit any cscope sessions. 2487 */ 2488 void 2489 cs_end(void) 2490 { 2491 int i; 2492 2493 for (i = 0; i < csinfo_size; i++) 2494 cs_release_csp(i, TRUE); 2495 vim_free(csinfo); 2496 csinfo_size = 0; 2497 } 2498 2499 #endif // FEAT_CSCOPE 2500 2501 #if defined(FEAT_EVAL) || defined(PROTO) 2502 2503 /* 2504 * "cscope_connection([{num} , {dbpath} [, {prepend}]])" function 2505 * 2506 * Checks the existence of a cscope connection. 2507 */ 2508 void 2509 f_cscope_connection(typval_T *argvars UNUSED, typval_T *rettv UNUSED) 2510 { 2511 # ifdef FEAT_CSCOPE 2512 int num = 0; 2513 char_u *dbpath = NULL; 2514 char_u *prepend = NULL; 2515 char_u buf[NUMBUFLEN]; 2516 2517 if (argvars[0].v_type != VAR_UNKNOWN 2518 && argvars[1].v_type != VAR_UNKNOWN) 2519 { 2520 num = (int)tv_get_number(&argvars[0]); 2521 dbpath = tv_get_string(&argvars[1]); 2522 if (argvars[2].v_type != VAR_UNKNOWN) 2523 prepend = tv_get_string_buf(&argvars[2], buf); 2524 } 2525 2526 rettv->vval.v_number = cs_connection(num, dbpath, prepend); 2527 # endif 2528 } 2529 2530 #endif // FEAT_EVAL 2531