src/if_cscope.c

   1 /* vi:set ts=8 sts=4 sw=4:
   2  *
   3  * CSCOPE support for Vim added by Andy Kahn <kahn@zk3.dec.com>
   4  * Ported to Win32 by Sergey Khorev <sergey.khorev@gmail.com>
   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 <string.h>
  17 #include <errno.h>
  18 #include <assert.h>
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #if defined(UNIX)
  22 # include <sys/wait.h>
  23 #else
  24     /* not UNIX, must be WIN32 */
  25 # include "vimio.h"
  26 # include <fcntl.h>
  27 #endif
  28 #include "if_cscope.h"
  29
  30 static void         cs_usage_msg __ARGS((csid_e x));
  31 static int          cs_add __ARGS((exarg_T *eap));
  32 static void         cs_stat_emsg __ARGS((char *fname));
  33 static int          cs_add_common __ARGS((char *, char *, char *));
  34 static int          cs_check_for_connections __ARGS((void));
  35 static int          cs_check_for_tags __ARGS((void));
  36 static int          cs_cnt_connections __ARGS((void));
  37 static void         cs_reading_emsg __ARGS((int idx));
  38 static int          cs_cnt_matches __ARGS((int idx));
  39 static char *       cs_create_cmd __ARGS((char *csoption, char *pattern));
  40 static int          cs_create_connection __ARGS((int i));
  41 static void         do_cscope_general __ARGS((exarg_T *eap, int make_split));
  42 #ifdef FEAT_QUICKFIX
  43 static void         cs_file_results __ARGS((FILE *, int *));
  44 #endif
  45 static void         cs_fill_results __ARGS((char *, int , int *, char ***,
  46                         char ***, int *));
  47 static int          cs_find __ARGS((exarg_T *eap));
  48 static int          cs_find_common __ARGS((char *opt, char *pat, int, int, int));
  49 static int          cs_help __ARGS((exarg_T *eap));
  50 static void         cs_init __ARGS((void));
  51 static void         clear_csinfo __ARGS((int i));
  52 static int          cs_insert_filelist __ARGS((char *, char *, char *,
  53                         struct stat *));
  54 static int          cs_kill __ARGS((exarg_T *eap));
  55 static void         cs_kill_execute __ARGS((int, char *));
  56 static cscmd_T *    cs_lookup_cmd __ARGS((exarg_T *eap));
  57 static char *       cs_make_vim_style_matches __ARGS((char *, char *,
  58                         char *, char *));
  59 static char *       cs_manage_matches __ARGS((char **, char **, int, mcmd_e));
  60 static char *       cs_parse_results __ARGS((int cnumber, char *buf, int bufsize, char **context, char **linenumber, char **search));
  61 static char *       cs_pathcomponents __ARGS((char *path));
  62 static void         cs_print_tags_priv __ARGS((char **, char **, int));
  63 static int          cs_read_prompt __ARGS((int));
  64 static void         cs_release_csp __ARGS((int, int freefnpp));
  65 static int          cs_reset __ARGS((exarg_T *eap));
  66 static char *       cs_resolve_file __ARGS((int, char *));
  67 static int          cs_show __ARGS((exarg_T *eap));
  68
  69
  70 static csinfo_T     csinfo[CSCOPE_MAX_CONNECTIONS];
  71 static int          eap_arg_len;    /* length of eap->arg, set in
  72                                        cs_lookup_cmd() */
  73 static cscmd_T      cs_cmds[] =
  74 {
  75     { "add",    cs_add,
  76                 N_("Add a new database"),     "add file|dir [pre-path] [flags]", 0 },
  77     { "find",   cs_find,
  78                 N_("Query for a pattern"),    FIND_USAGE, 1 },
  79     { "help",   cs_help,
  80                 N_("Show this message"),      "help", 0 },
  81     { "kill",   cs_kill,
  82                 N_("Kill a connection"),      "kill #", 0 },
  83     { "reset",  cs_reset,
  84                 N_("Reinit all connections"), "reset", 0 },
  85     { "show",   cs_show,
  86                 N_("Show connections"),       "show", 0 },
  87     { NULL }
  88 };
  89
  90     static void
  91 cs_usage_msg(x)
  92     csid_e x;
  93 {
  94     (void)EMSG2(_("E560: Usage: cs[cope] %s"), cs_cmds[(int)x].usage);
  95 }
  96
  97 /*
  98  * PRIVATE: do_cscope_general
  99  *
 100  * find the command, print help if invalid, and the then call the
 101  * corresponding command function,
 102  * called from do_cscope and do_scscope
 103  */
 104     static void
 105 do_cscope_general(eap, make_split)
 106     exarg_T     *eap;
 107     int         make_split; /* whether to split window */
 108 {
 109     cscmd_T *cmdp;
 110
 111     cs_init();
 112     if ((cmdp = cs_lookup_cmd(eap)) == NULL)
 113     {
 114         cs_help(eap);
 115         return;
 116     }
 117
 118 #ifdef FEAT_WINDOWS
 119     if (make_split)
 120     {
 121         if (!cmdp->cansplit)
 122         {
 123             (void)MSG_PUTS(_("This cscope command does not support splitting the window.\n"));
 124             return;
 125         }
 126         postponed_split = -1;
 127         postponed_split_flags = cmdmod.split;
 128         postponed_split_tab = cmdmod.tab;
 129     }
 130 #endif
 131
 132     cmdp->func(eap);
 133
 134 #ifdef FEAT_WINDOWS
 135     postponed_split_flags = 0;
 136     postponed_split_tab = 0;
 137 #endif
 138 }
 139
 140 /*
 141  * PUBLIC: do_cscope
 142  */
 143     void
 144 do_cscope(eap)
 145     exarg_T *eap;
 146 {
 147     do_cscope_general(eap, FALSE);
 148 }
 149
 150 /*
 151  * PUBLIC: do_scscope
 152  *
 153  * same as do_cscope, but splits window, too.
 154  */
 155     void
 156 do_scscope(eap)
 157     exarg_T *eap;
 158 {
 159     do_cscope_general(eap, TRUE);
 160 }
 161
 162 /*
 163  * PUBLIC: do_cstag
 164  *
 165  */
 166     void
 167 do_cstag(eap)
 168     exarg_T *eap;
 169 {
 170     int ret = FALSE;
 171
 172     cs_init();
 173
 174     if (eap->arg == NULL || strlen((const char *)(eap->arg)) == 0)
 175     {
 176         (void)EMSG(_("E562: Usage: cstag <ident>"));
 177         return;
 178     }
 179
 180     switch (p_csto)
 181     {
 182     case 0 :
 183         if (cs_check_for_connections())
 184         {
 185             ret = cs_find_common("g", (char *)(eap->arg), eap->forceit, FALSE,
 186                                  FALSE);
 187             if (ret == FALSE)
 188             {
 189                 cs_free_tags();
 190                 if (msg_col)
 191                     msg_putchar('\n');
 192
 193                 if (cs_check_for_tags())
 194                     ret = do_tag(eap->arg, DT_JUMP, 0, eap->forceit, FALSE);
 195             }
 196         }
 197         else if (cs_check_for_tags())
 198         {
 199             ret = do_tag(eap->arg, DT_JUMP, 0, eap->forceit, FALSE);
 200         }
 201         break;
 202     case 1 :
 203         if (cs_check_for_tags())
 204         {
 205             ret = do_tag(eap->arg, DT_JUMP, 0, eap->forceit, FALSE);
 206             if (ret == FALSE)
 207             {
 208                 if (msg_col)
 209                     msg_putchar('\n');
 210
 211                 if (cs_check_for_connections())
 212                 {
 213                     ret = cs_find_common("g", (char *)(eap->arg), eap->forceit,
 214                                          FALSE, FALSE);
 215                     if (ret == FALSE)
 216                         cs_free_tags();
 217                 }
 218             }
 219         }
 220         else if (cs_check_for_connections())
 221         {
 222             ret = cs_find_common("g", (char *)(eap->arg), eap->forceit, FALSE,
 223                                  FALSE);
 224             if (ret == FALSE)
 225                 cs_free_tags();
 226         }
 227         break;
 228     default :
 229         break;
 230     }
 231
 232     if (!ret)
 233     {
 234         (void)EMSG(_("E257: cstag: tag not found"));
 235 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
 236         g_do_tagpreview = 0;
 237 #endif
 238     }
 239
 240 } /* do_cscope */
 241
 242
 243 /*
 244  * PUBLIC: cs_find
 245  *
 246  * this simulates a vim_fgets(), but for cscope, returns the next line
 247  * from the cscope output.  should only be called from find_tags()
 248  *
 249  * returns TRUE if eof, FALSE otherwise
 250  */
 251     int
 252 cs_fgets(buf, size)
 253     char_u      *buf;
 254     int         size;
 255 {
 256     char *p;
 257
 258     if ((p = cs_manage_matches(NULL, NULL, -1, Get)) == NULL)
 259         return TRUE;
 260     vim_strncpy(buf, (char_u *)p, size - 1);
 261
 262     return FALSE;
 263 } /* cs_fgets */
 264
 265
 266 /*
 267  * PUBLIC: cs_free_tags
 268  *
 269  * called only from do_tag(), when popping the tag stack
 270  */
 271     void
 272 cs_free_tags()
 273 {
 274     cs_manage_matches(NULL, NULL, -1, Free);
 275 }
 276
 277
 278 /*
 279  * PUBLIC: cs_print_tags
 280  *
 281  * called from do_tag()
 282  */
 283     void
 284 cs_print_tags()
 285 {
 286     cs_manage_matches(NULL, NULL, -1, Print);
 287 }
 288
 289
 290 /*
 291  * "cscope_connection([{num} , {dbpath} [, {prepend}]])" function
 292  *
 293  *              Checks for the existence of a |cscope| connection.  If no
 294  *              parameters are specified, then the function returns:
 295  *
 296  *              0, if cscope was not available (not compiled in), or if there
 297  *              are no cscope connections; or
 298  *              1, if there is at least one cscope connection.
 299  *
 300  *              If parameters are specified, then the value of {num}
 301  *              determines how existence of a cscope connection is checked:
 302  *
 303  *              {num}   Description of existence check
 304  *              -----   ------------------------------
 305  *              0       Same as no parameters (e.g., "cscope_connection()").
 306  *              1       Ignore {prepend}, and use partial string matches for
 307  *                      {dbpath}.
 308  *              2       Ignore {prepend}, and use exact string matches for
 309  *                      {dbpath}.
 310  *              3       Use {prepend}, use partial string matches for both
 311  *                      {dbpath} and {prepend}.
 312  *              4       Use {prepend}, use exact string matches for both
 313  *                      {dbpath} and {prepend}.
 314  *
 315  *              Note: All string comparisons are case sensitive!
 316  */
 317 #if defined(FEAT_EVAL) || defined(PROTO)
 318     int
 319 cs_connection(num, dbpath, ppath)
 320     int num;
 321     char_u *dbpath;
 322     char_u *ppath;
 323 {
 324     int i;
 325
 326     if (num < 0 || num > 4 || (num > 0 && !dbpath))
 327         return FALSE;
 328
 329     for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
 330     {
 331         if (!csinfo[i].fname)
 332             continue;
 333
 334         if (num == 0)
 335             return TRUE;
 336
 337         switch (num)
 338         {
 339         case 1:
 340             if (strstr(csinfo[i].fname, (char *)dbpath))
 341                 return TRUE;
 342             break;
 343         case 2:
 344             if (strcmp(csinfo[i].fname, (char *)dbpath) == 0)
 345                 return TRUE;
 346             break;
 347         case 3:
 348             if (strstr(csinfo[i].fname, (char *)dbpath)
 349                     && ((!ppath && !csinfo[i].ppath)
 350                         || (ppath
 351                             && csinfo[i].ppath
 352                             && strstr(csinfo[i].ppath, (char *)ppath))))
 353                 return TRUE;
 354             break;
 355         case 4:
 356             if ((strcmp(csinfo[i].fname, (char *)dbpath) == 0)
 357                     && ((!ppath && !csinfo[i].ppath)
 358                         || (ppath
 359                             && csinfo[i].ppath
 360                             && (strcmp(csinfo[i].ppath, (char *)ppath) == 0))))
 361                 return TRUE;
 362             break;
 363         }
 364     }
 365
 366     return FALSE;
 367 } /* cs_connection */
 368 #endif
 369
 370
 371 /*
 372  * PRIVATE functions
 373  ****************************************************************************/
 374
 375 /*
 376  * PRIVATE: cs_add
 377  *
 378  * add cscope database or a directory name (to look for cscope.out)
 379  * to the cscope connection list
 380  *
 381  * MAXPATHL 256
 382  */
 383 /* ARGSUSED */
 384     static int
 385 cs_add(eap)
 386     exarg_T *eap;
 387 {
 388     char *fname, *ppath, *flags = NULL;
 389
 390     if ((fname = strtok((char *)NULL, (const char *)" ")) == NULL)
 391     {
 392         cs_usage_msg(Add);
 393         return CSCOPE_FAILURE;
 394     }
 395     if ((ppath = strtok((char *)NULL, (const char *)" ")) != NULL)
 396         flags = strtok((char *)NULL, (const char *)" ");
 397
 398     return cs_add_common(fname, ppath, flags);
 399 }
 400
 401     static void
 402 cs_stat_emsg(fname)
 403     char *fname;
 404 {
 405     char *stat_emsg = _("E563: stat(%s) error: %d");
 406     char *buf = (char *)alloc((unsigned)strlen(stat_emsg) + MAXPATHL + 10);
 407
 408     if (buf != NULL)
 409     {
 410         (void)sprintf(buf, stat_emsg, fname, errno);
 411         (void)EMSG(buf);
 412         vim_free(buf);
 413     }
 414     else
 415         (void)EMSG(_("E563: stat error"));
 416 }
 417
 418
 419 /*
 420  * PRIVATE: cs_add_common
 421  *
 422  * the common routine to add a new cscope connection.  called by
 423  * cs_add() and cs_reset().  i really don't like to do this, but this
 424  * routine uses a number of goto statements.
 425  */
 426     static int
 427 cs_add_common(arg1, arg2, flags)
 428     char *arg1;     /* filename - may contain environment variables */
 429     char *arg2;     /* prepend path - may contain environment variables */
 430     char *flags;
 431 {
 432     struct stat statbuf;
 433     int         ret;
 434     char        *fname = NULL;
 435     char        *fname2 = NULL;
 436     char        *ppath = NULL;
 437     int         i;
 438
 439     /* get the filename (arg1), expand it, and try to stat it */
 440     if ((fname = (char *)alloc(MAXPATHL + 1)) == NULL)
 441         goto add_err;
 442
 443     expand_env((char_u *)arg1, (char_u *)fname, MAXPATHL);
 444     ret = stat(fname, &statbuf);
 445     if (ret < 0)
 446     {
 447 staterr:
 448         if (p_csverbose)
 449             cs_stat_emsg(fname);
 450         goto add_err;
 451     }
 452
 453     /* get the prepend path (arg2), expand it, and try to stat it */
 454     if (arg2 != NULL)
 455     {
 456         struct stat statbuf2;
 457
 458         if ((ppath = (char *)alloc(MAXPATHL + 1)) == NULL)
 459             goto add_err;
 460
 461         expand_env((char_u *)arg2, (char_u *)ppath, MAXPATHL);
 462         ret = stat(ppath, &statbuf2);
 463         if (ret < 0)
 464             goto staterr;
 465     }
 466
 467     /* if filename is a directory, append the cscope database name to it */
 468     if ((statbuf.st_mode & S_IFMT) == S_IFDIR)
 469     {
 470         fname2 = (char *)alloc((unsigned)(strlen(CSCOPE_DBFILE) + strlen(fname) + 2));
 471         if (fname2 == NULL)
 472             goto add_err;
 473
 474         while (fname[strlen(fname)-1] == '/'
 475 #ifdef WIN32
 476                 || fname[strlen(fname)-1] == '\\'
 477 #endif
 478                 )
 479         {
 480             fname[strlen(fname)-1] = '\0';
 481             if (strlen(fname) == 0)
 482                 break;
 483         }
 484         if (fname[0] == '\0')
 485             (void)sprintf(fname2, "/%s", CSCOPE_DBFILE);
 486         else
 487             (void)sprintf(fname2, "%s/%s", fname, CSCOPE_DBFILE);
 488
 489         ret = stat(fname2, &statbuf);
 490         if (ret < 0)
 491         {
 492             if (p_csverbose)
 493                 cs_stat_emsg(fname2);
 494             goto add_err;
 495         }
 496
 497         i = cs_insert_filelist(fname2, ppath, flags, &statbuf);
 498     }
 499 #if defined(UNIX)
 500     else if (S_ISREG(statbuf.st_mode) || S_ISLNK(statbuf.st_mode))
 501 #else
 502         /* WIN32 - substitute define S_ISREG from os_unix.h */
 503     else if (((statbuf.st_mode) & S_IFMT) == S_IFREG)
 504 #endif
 505     {
 506         i = cs_insert_filelist(fname, ppath, flags, &statbuf);
 507     }
 508     else
 509     {
 510         if (p_csverbose)
 511             (void)EMSG2(
 512                 _("E564: %s is not a directory or a valid cscope database"),
 513                 fname);
 514         goto add_err;
 515     }
 516
 517     if (i != -1)
 518     {
 519         if (cs_create_connection(i) == CSCOPE_FAILURE
 520                 || cs_read_prompt(i) == CSCOPE_FAILURE)
 521         {
 522             cs_release_csp(i, TRUE);
 523             goto add_err;
 524         }
 525
 526         if (p_csverbose)
 527         {
 528             msg_clr_eos();
 529             (void)smsg_attr(hl_attr(HLF_R),
 530                             (char_u *)_("Added cscope database %s"),
 531                             csinfo[i].fname);
 532         }
 533     }
 534
 535     vim_free(fname);
 536     vim_free(fname2);
 537     vim_free(ppath);
 538     return CSCOPE_SUCCESS;
 539
 540 add_err:
 541     vim_free(fname2);
 542     vim_free(fname);
 543     vim_free(ppath);
 544     return CSCOPE_FAILURE;
 545 } /* cs_add_common */
 546
 547
 548     static int
 549 cs_check_for_connections()
 550 {
 551     return (cs_cnt_connections() > 0);
 552 } /* cs_check_for_connections */
 553
 554
 555     static int
 556 cs_check_for_tags()
 557 {
 558     return (p_tags[0] != NUL && curbuf->b_p_tags != NULL);
 559 } /* cs_check_for_tags */
 560
 561
 562 /*
 563  * PRIVATE: cs_cnt_connections
 564  *
 565  * count the number of cscope connections
 566  */
 567     static int
 568 cs_cnt_connections()
 569 {
 570     short i;
 571     short cnt = 0;
 572
 573     for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
 574     {
 575         if (csinfo[i].fname != NULL)
 576             cnt++;
 577     }
 578     return cnt;
 579 } /* cs_cnt_connections */
 580
 581     static void
 582 cs_reading_emsg(idx)
 583     int idx;    /* connection index */
 584 {
 585     EMSGN(_("E262: error reading cscope connection %ld"), idx);
 586 }
 587
 588 #define CSREAD_BUFSIZE  2048
 589 /*
 590  * PRIVATE: cs_cnt_matches
 591  *
 592  * count the number of matches for a given cscope connection.
 593  */
 594     static int
 595 cs_cnt_matches(idx)
 596     int idx;
 597 {
 598     char *stok;
 599     char *buf;
 600     int nlines;
 601
 602     buf = (char *)alloc(CSREAD_BUFSIZE);
 603     if (buf == NULL)
 604         return 0;
 605     for (;;)
 606     {
 607         if (!fgets(buf, CSREAD_BUFSIZE, csinfo[idx].fr_fp))
 608         {
 609             if (feof(csinfo[idx].fr_fp))
 610                 errno = EIO;
 611
 612             cs_reading_emsg(idx);
 613
 614             vim_free(buf);
 615             return -1;
 616         }
 617
 618         /*
 619          * If the database is out of date, or there's some other problem,
 620          * cscope will output error messages before the number-of-lines output.
 621          * Display/discard any output that doesn't match what we want.
 622          * Accept "\S*cscope: X lines", also matches "mlcscope".
 623          */
 624         if ((stok = strtok(buf, (const char *)" ")) == NULL)
 625             continue;
 626         if (strstr((const char *)stok, "cscope:") == NULL)
 627             continue;
 628
 629         if ((stok = strtok(NULL, (const char *)" ")) == NULL)
 630             continue;
 631         nlines = atoi(stok);
 632         if (nlines < 0)
 633         {
 634             nlines = 0;
 635             break;
 636         }
 637
 638         if ((stok = strtok(NULL, (const char *)" ")) == NULL)
 639             continue;
 640         if (strncmp((const char *)stok, "lines", 5))
 641             continue;
 642
 643         break;
 644     }
 645
 646     vim_free(buf);
 647     return nlines;
 648 } /* cs_cnt_matches */
 649
 650
 651 /*
 652  * PRIVATE: cs_create_cmd
 653  *
 654  * Creates the actual cscope command query from what the user entered.
 655  */
 656     static char *
 657 cs_create_cmd(csoption, pattern)
 658     char *csoption;
 659     char *pattern;
 660 {
 661     char *cmd;
 662     short search;
 663
 664     switch (csoption[0])
 665     {
 666     case '0' : case 's' :
 667         search = 0;
 668         break;
 669     case '1' : case 'g' :
 670         search = 1;
 671         break;
 672     case '2' : case 'd' :
 673         search = 2;
 674         break;
 675     case '3' : case 'c' :
 676         search = 3;
 677         break;
 678     case '4' : case 't' :
 679         search = 4;
 680         break;
 681     case '6' : case 'e' :
 682         search = 6;
 683         break;
 684     case '7' : case 'f' :
 685         search = 7;
 686         break;
 687     case '8' : case 'i' :
 688         search = 8;
 689         break;
 690     default :
 691         (void)EMSG(_("E561: unknown cscope search type"));
 692         cs_usage_msg(Find);
 693         return NULL;
 694     }
 695
 696     if ((cmd = (char *)alloc((unsigned)(strlen(pattern) + 2))) == NULL)
 697         return NULL;
 698
 699     (void)sprintf(cmd, "%d%s", search, pattern);
 700
 701     return cmd;
 702 } /* cs_create_cmd */
 703
 704
 705 /*
 706  * PRIVATE: cs_create_connection
 707  *
 708  * This piece of code was taken/adapted from nvi.  do we need to add
 709  * the BSD license notice?
 710  */
 711     static int
 712 cs_create_connection(i)
 713     int i;
 714 {
 715 #ifdef UNIX
 716     int         to_cs[2], from_cs[2];
 717 #endif
 718     int         len;
 719     char        *prog, *cmd, *ppath = NULL;
 720 #ifdef WIN32
 721     int         fd;
 722     SECURITY_ATTRIBUTES sa;
 723     PROCESS_INFORMATION pi;
 724     STARTUPINFO si;
 725     BOOL        pipe_stdin = FALSE, pipe_stdout = FALSE;
 726     HANDLE      stdin_rd, stdout_rd;
 727     HANDLE      stdout_wr, stdin_wr;
 728     BOOL        created;
 729 # ifdef __BORLANDC__
 730 #  define OPEN_OH_ARGTYPE long
 731 # else
 732 #  if (_MSC_VER >= 1300)
 733 #   define OPEN_OH_ARGTYPE intptr_t
 734 #  else
 735 #   define OPEN_OH_ARGTYPE long
 736 #  endif
 737 # endif
 738 #endif
 739
 740 #if defined(UNIX)
 741     /*
 742      * Cscope reads from to_cs[0] and writes to from_cs[1]; vi reads from
 743      * from_cs[0] and writes to to_cs[1].
 744      */
 745     to_cs[0] = to_cs[1] = from_cs[0] = from_cs[1] = -1;
 746     if (pipe(to_cs) < 0 || pipe(from_cs) < 0)
 747     {
 748         (void)EMSG(_("E566: Could not create cscope pipes"));
 749 err_closing:
 750         if (to_cs[0] != -1)
 751             (void)close(to_cs[0]);
 752         if (to_cs[1] != -1)
 753             (void)close(to_cs[1]);
 754         if (from_cs[0] != -1)
 755             (void)close(from_cs[0]);
 756         if (from_cs[1] != -1)
 757             (void)close(from_cs[1]);
 758         return CSCOPE_FAILURE;
 759     }
 760
 761     switch (csinfo[i].pid = fork())
 762     {
 763     case -1:
 764         (void)EMSG(_("E622: Could not fork for cscope"));
 765         goto err_closing;
 766     case 0:                             /* child: run cscope. */
 767         if (dup2(to_cs[0], STDIN_FILENO) == -1)
 768             PERROR("cs_create_connection 1");
 769         if (dup2(from_cs[1], STDOUT_FILENO) == -1)
 770             PERROR("cs_create_connection 2");
 771         if (dup2(from_cs[1], STDERR_FILENO) == -1)
 772             PERROR("cs_create_connection 3");
 773
 774         /* close unused */
 775         (void)close(to_cs[1]);
 776         (void)close(from_cs[0]);
 777 #else
 778         /* WIN32 */
 779         /* Create pipes to communicate with cscope */
 780         sa.nLength = sizeof(SECURITY_ATTRIBUTES);
 781         sa.bInheritHandle = TRUE;
 782         sa.lpSecurityDescriptor = NULL;
 783
 784         if (!(pipe_stdin = CreatePipe(&stdin_rd, &stdin_wr, &sa, 0))
 785                 || !(pipe_stdout = CreatePipe(&stdout_rd, &stdout_wr, &sa, 0)))
 786         {
 787             (void)EMSG(_("E566: Could not create cscope pipes"));
 788 err_closing:
 789             if (pipe_stdin)
 790             {
 791                 CloseHandle(stdin_rd);
 792                 CloseHandle(stdin_wr);
 793             }
 794             if (pipe_stdout)
 795             {
 796                 CloseHandle(stdout_rd);
 797                 CloseHandle(stdout_wr);
 798             }
 799             return CSCOPE_FAILURE;
 800         }
 801 #endif
 802         /* expand the cscope exec for env var's */
 803         if ((prog = (char *)alloc(MAXPATHL + 1)) == NULL)
 804         {
 805 #ifdef UNIX
 806             return CSCOPE_FAILURE;
 807 #else
 808             /* WIN32 */
 809             goto err_closing;
 810 #endif
 811         }
 812         expand_env((char_u *)p_csprg, (char_u *)prog, MAXPATHL);
 813
 814         /* alloc space to hold the cscope command */
 815         len = (int)(strlen(prog) + strlen(csinfo[i].fname) + 32);
 816         if (csinfo[i].ppath)
 817         {
 818             /* expand the prepend path for env var's */
 819             if ((ppath = (char *)alloc(MAXPATHL + 1)) == NULL)
 820             {
 821                 vim_free(prog);
 822 #ifdef UNIX
 823                 return CSCOPE_FAILURE;
 824 #else
 825                 /* WIN32 */
 826                 goto err_closing;
 827 #endif
 828             }
 829             expand_env((char_u *)csinfo[i].ppath, (char_u *)ppath, MAXPATHL);
 830
 831             len += (int)strlen(ppath);
 832         }
 833
 834         if (csinfo[i].flags)
 835             len += (int)strlen(csinfo[i].flags);
 836
 837         if ((cmd = (char *)alloc(len)) == NULL)
 838         {
 839             vim_free(prog);
 840             vim_free(ppath);
 841 #ifdef UNIX
 842             return CSCOPE_FAILURE;
 843 #else
 844             /* WIN32 */
 845             goto err_closing;
 846 #endif
 847         }
 848
 849         /* run the cscope command; is there execl for non-unix systems? */
 850 #if defined(UNIX)
 851         (void)sprintf(cmd, "exec %s -dl -f %s", prog, csinfo[i].fname);
 852 #else
 853         /* WIN32 */
 854         (void)sprintf(cmd, "%s -dl -f %s", prog, csinfo[i].fname);
 855 #endif
 856         if (csinfo[i].ppath != NULL)
 857         {
 858             (void)strcat(cmd, " -P");
 859             (void)strcat(cmd, csinfo[i].ppath);
 860         }
 861         if (csinfo[i].flags != NULL)
 862         {
 863             (void)strcat(cmd, " ");
 864             (void)strcat(cmd, csinfo[i].flags);
 865         }
 866 # ifdef UNIX
 867       /* on Win32 we still need prog */
 868         vim_free(prog);
 869 # endif
 870         vim_free(ppath);
 871
 872 #if defined(UNIX)
 873         if (execl("/bin/sh", "sh", "-c", cmd, NULL) == -1)
 874             PERROR(_("cs_create_connection exec failed"));
 875
 876         exit(127);
 877         /* NOTREACHED */
 878     default:    /* parent. */
 879         /*
 880          * Save the file descriptors for later duplication, and
 881          * reopen as streams.
 882          */
 883         if ((csinfo[i].to_fp = fdopen(to_cs[1], "w")) == NULL)
 884             PERROR(_("cs_create_connection: fdopen for to_fp failed"));
 885         if ((csinfo[i].fr_fp = fdopen(from_cs[0], "r")) == NULL)
 886             PERROR(_("cs_create_connection: fdopen for fr_fp failed"));
 887
 888         /* close unused */
 889         (void)close(to_cs[0]);
 890         (void)close(from_cs[1]);
 891
 892         break;
 893     }
 894
 895 #else
 896     /* WIN32 */
 897     /* Create a new process to run cscope and use pipes to talk with it */
 898     GetStartupInfo(&si);
 899     si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
 900     si.wShowWindow = SW_HIDE;  /* Hide child application window */
 901     si.hStdOutput = stdout_wr;
 902     si.hStdError  = stdout_wr;
 903     si.hStdInput  = stdin_rd;
 904     created = CreateProcess(NULL, cmd, NULL, NULL, TRUE, CREATE_NEW_CONSOLE,
 905                                                         NULL, NULL, &si, &pi);
 906     vim_free(prog);
 907     vim_free(cmd);
 908
 909     if (!created)
 910     {
 911         PERROR(_("cs_create_connection exec failed"));
 912         (void)EMSG(_("E623: Could not spawn cscope process"));
 913         goto err_closing;
 914     }
 915     /* else */
 916     csinfo[i].pid = pi.dwProcessId;
 917     csinfo[i].hProc = pi.hProcess;
 918     CloseHandle(pi.hThread);
 919
 920     /* TODO - tidy up after failure to create files on pipe handles. */
 921     if (((fd = _open_osfhandle((OPEN_OH_ARGTYPE)stdin_wr,
 922                                                       _O_TEXT|_O_APPEND)) < 0)
 923             || ((csinfo[i].to_fp = _fdopen(fd, "w")) == NULL))
 924         PERROR(_("cs_create_connection: fdopen for to_fp failed"));
 925     if (((fd = _open_osfhandle((OPEN_OH_ARGTYPE)stdout_rd,
 926                                                       _O_TEXT|_O_RDONLY)) < 0)
 927             || ((csinfo[i].fr_fp = _fdopen(fd, "r")) == NULL))
 928         PERROR(_("cs_create_connection: fdopen for fr_fp failed"));
 929
 930     /* Close handles for file descriptors inherited by the cscope process */
 931     CloseHandle(stdin_rd);
 932     CloseHandle(stdout_wr);
 933
 934 #endif /* !UNIX */
 935
 936     return CSCOPE_SUCCESS;
 937 } /* cs_create_connection */
 938
 939
 940 /*
 941  * PRIVATE: cs_find
 942  *
 943  * query cscope using command line interface.  parse the output and use tselect
 944  * to allow choices.  like Nvi, creates a pipe to send to/from query/cscope.
 945  *
 946  * returns TRUE if we jump to a tag or abort, FALSE if not.
 947  */
 948     static int
 949 cs_find(eap)
 950     exarg_T *eap;
 951 {
 952     char *opt, *pat;
 953
 954     if (cs_check_for_connections() == FALSE)
 955     {
 956         (void)EMSG(_("E567: no cscope connections"));
 957         return FALSE;
 958     }
 959
 960     if ((opt = strtok((char *)NULL, (const char *)" ")) == NULL)
 961     {
 962         cs_usage_msg(Find);
 963         return FALSE;
 964     }
 965
 966     pat = opt + strlen(opt) + 1;
 967     if (pat >= (char *)eap->arg + eap_arg_len)
 968     {
 969         cs_usage_msg(Find);
 970         return FALSE;
 971     }
 972
 973     return cs_find_common(opt, pat, eap->forceit, TRUE,
 974                           eap->cmdidx == CMD_lcscope);
 975 } /* cs_find */
 976
 977
 978 /*
 979  * PRIVATE: cs_find_common
 980  *
 981  * common code for cscope find, shared by cs_find() and do_cstag()
 982  */
 983     static int
 984 cs_find_common(opt, pat, forceit, verbose, use_ll)
 985     char *opt;
 986     char *pat;
 987     int forceit;
 988     int verbose;
 989     int use_ll;
 990 {
 991     int i;
 992     char *cmd;
 993     int nummatches[CSCOPE_MAX_CONNECTIONS], totmatches;
 994 #ifdef FEAT_QUICKFIX
 995     char cmdletter;
 996     char *qfpos;
 997 #endif
 998
 999     /* create the actual command to send to cscope */
1000     cmd = cs_create_cmd(opt, pat);
1001     if (cmd == NULL)
1002         return FALSE;
1003
1004     /* send query to all open connections, then count the total number
1005      * of matches so we can alloc matchesp all in one swell foop
1006      */
1007     for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
1008         nummatches[i] = 0;
1009     totmatches = 0;
1010     for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
1011     {
1012         if (csinfo[i].fname == NULL || csinfo[i].to_fp == NULL)
1013             continue;
1014
1015         /* send cmd to cscope */
1016         (void)fprintf(csinfo[i].to_fp, "%s\n", cmd);
1017         (void)fflush(csinfo[i].to_fp);
1018
1019         nummatches[i] = cs_cnt_matches(i);
1020
1021         if (nummatches[i] > -1)
1022             totmatches += nummatches[i];
1023
1024         if (nummatches[i] == 0)
1025             (void)cs_read_prompt(i);
1026     }
1027     vim_free(cmd);
1028
1029     if (totmatches == 0)
1030     {
1031         char *nf = _("E259: no matches found for cscope query %s of %s");
1032         char *buf;
1033
1034         if (!verbose)
1035             return FALSE;
1036
1037         buf = (char *)alloc((unsigned)(strlen(opt) + strlen(pat) + strlen(nf)));
1038         if (buf == NULL)
1039             (void)EMSG(nf);
1040         else
1041         {
1042             sprintf(buf, nf, opt, pat);
1043             (void)EMSG(buf);
1044             vim_free(buf);
1045         }
1046         return FALSE;
1047     }
1048
1049 #ifdef FEAT_QUICKFIX
1050     /* get cmd letter */
1051     switch (opt[0])
1052     {
1053     case '0' :
1054         cmdletter = 's';
1055         break;
1056     case '1' :
1057         cmdletter = 'g';
1058         break;
1059     case '2' :
1060         cmdletter = 'd';
1061         break;
1062     case '3' :
1063         cmdletter = 'c';
1064         break;
1065     case '4' :
1066         cmdletter = 't';
1067         break;
1068     case '6' :
1069         cmdletter = 'e';
1070         break;
1071     case '7' :
1072         cmdletter = 'f';
1073         break;
1074     case '8' :
1075         cmdletter = 'i';
1076         break;
1077     default :
1078         cmdletter = opt[0];
1079     }
1080
1081     qfpos = (char *)vim_strchr(p_csqf, cmdletter);
1082     if (qfpos != NULL)
1083     {
1084         qfpos++;
1085         /* next symbol must be + or - */
1086         if (strchr(CSQF_FLAGS, *qfpos) == NULL)
1087         {
1088             char *nf = _("E469: invalid cscopequickfix flag %c for %c");
1089             char *buf = (char *)alloc((unsigned)strlen(nf));
1090
1091             /* strlen will be enough because we use chars */
1092             if (buf != NULL)
1093             {
1094                 sprintf(buf, nf, *qfpos, *(qfpos-1));
1095                 (void)EMSG(buf);
1096                 vim_free(buf);
1097             }
1098             return FALSE;
1099         }
1100     }
1101     if (qfpos != NULL && *qfpos != '0' && totmatches > 0)
1102     {
1103         /* fill error list */
1104         FILE        *f;
1105         char_u      *tmp = vim_tempname('c');
1106         qf_info_T   *qi = NULL;
1107         win_T       *wp = NULL;
1108
1109         f = mch_fopen((char *)tmp, "w");
1110         if (f == NULL)
1111             EMSG2(_(e_notopen), tmp);
1112         else
1113         {
1114             cs_file_results(f, nummatches);
1115             fclose(f);
1116             if (use_ll)     /* Use location list */
1117                 wp = curwin;
1118             /* '-' starts a new error list */
1119             if (qf_init(wp, tmp, (char_u *)"%f%*\\t%l%*\\t%m",
1120                                                            *qfpos == '-') > 0)
1121             {
1122 # ifdef FEAT_WINDOWS
1123                 if (postponed_split != 0)
1124                 {
1125                     win_split(postponed_split > 0 ? postponed_split : 0,
1126                                                        postponed_split_flags);
1127 #  ifdef FEAT_SCROLLBIND
1128                     curwin->w_p_scb = FALSE;
1129 #  endif
1130                     postponed_split = 0;
1131                 }
1132 # endif
1133                 if (use_ll)
1134                     /*
1135                      * In the location list window, use the displayed location
1136                      * list. Otherwise, use the location list for the window.
1137                      */
1138                     qi = (bt_quickfix(wp->w_buffer) && wp->w_llist_ref != NULL)
1139                         ?  wp->w_llist_ref : wp->w_llist;
1140                 qf_jump(qi, 0, 0, forceit);
1141             }
1142         }
1143         mch_remove(tmp);
1144         vim_free(tmp);
1145         return TRUE;
1146     }
1147     else
1148 #endif /* FEAT_QUICKFIX */
1149     {
1150         char **matches = NULL, **contexts = NULL;
1151         int matched = 0;
1152
1153         /* read output */
1154         cs_fill_results((char *)pat, totmatches, nummatches, &matches,
1155                                                          &contexts, &matched);
1156         if (matches == NULL)
1157             return FALSE;
1158
1159         (void)cs_manage_matches(matches, contexts, matched, Store);
1160
1161         return do_tag((char_u *)pat, DT_CSCOPE, 0, forceit, verbose);
1162     }
1163
1164 } /* cs_find_common */
1165
1166 /*
1167  * PRIVATE: cs_help
1168  *
1169  * print help
1170  */
1171 /* ARGSUSED */
1172     static int
1173 cs_help(eap)
1174     exarg_T *eap;
1175 {
1176     cscmd_T *cmdp = cs_cmds;
1177
1178     (void)MSG_PUTS(_("cscope commands:\n"));
1179     while (cmdp->name != NULL)
1180     {
1181         (void)smsg((char_u *)_("%-5s: %-30s (Usage: %s)"),
1182                                       cmdp->name, _(cmdp->help), cmdp->usage);
1183         if (strcmp(cmdp->name, "find") == 0)
1184             MSG_PUTS(FIND_HELP);
1185         cmdp++;
1186     }
1187
1188     wait_return(TRUE);
1189     return 0;
1190 } /* cs_help */
1191
1192
1193 /*
1194  * PRIVATE: cs_init
1195  *
1196  * initialize cscope structure if not already
1197  */
1198     static void
1199 cs_init()
1200 {
1201     short i;
1202     static int init_already = FALSE;
1203
1204     if (init_already)
1205         return;
1206
1207     for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
1208         clear_csinfo(i);
1209
1210     init_already = TRUE;
1211 } /* cs_init */
1212
1213     static void
1214 clear_csinfo(i)
1215     int     i;
1216 {
1217     csinfo[i].fname  = NULL;
1218     csinfo[i].ppath  = NULL;
1219     csinfo[i].flags  = NULL;
1220 #if defined(UNIX)
1221     csinfo[i].st_dev = (dev_t)0;
1222     csinfo[i].st_ino = (ino_t)0;
1223 #else
1224     csinfo[i].nVolume = 0;
1225     csinfo[i].nIndexHigh = 0;
1226     csinfo[i].nIndexLow = 0;
1227 #endif
1228     csinfo[i].pid    = -1;
1229     csinfo[i].fr_fp  = NULL;
1230     csinfo[i].to_fp  = NULL;
1231 #if defined(WIN32)
1232     csinfo[i].hProc = NULL;
1233 #endif
1234 }
1235
1236 #ifndef UNIX
1237 static char *GetWin32Error __ARGS((void));
1238
1239     static char *
1240 GetWin32Error()
1241 {
1242     char *msg = NULL;
1243     FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
1244             NULL, GetLastError(), 0, (LPSTR)&msg, 0, NULL);
1245     if (msg != NULL)
1246     {
1247         /* remove trailing \r\n */
1248         char *pcrlf = strstr(msg, "\r\n");
1249         if (pcrlf != NULL)
1250             *pcrlf = '\0';
1251     }
1252     return msg;
1253 }
1254 #endif
1255
1256 /*
1257  * PRIVATE: cs_insert_filelist
1258  *
1259  * insert a new cscope database filename into the filelist
1260  */
1261 /*ARGSUSED*/
1262     static int
1263 cs_insert_filelist(fname, ppath, flags, sb)
1264     char *fname;
1265     char *ppath;
1266     char *flags;
1267     struct stat *sb;
1268 {
1269     short       i, j;
1270 #ifndef UNIX
1271     HANDLE      hFile;
1272     BY_HANDLE_FILE_INFORMATION bhfi;
1273
1274     vim_memset(&bhfi, 0, sizeof(bhfi));
1275     /* On windows 9x GetFileInformationByHandle doesn't work, so skip it */
1276     if (!mch_windows95())
1277     {
1278         hFile = CreateFile(fname, FILE_READ_ATTRIBUTES, 0, NULL, OPEN_EXISTING,
1279                                                  FILE_ATTRIBUTE_NORMAL, NULL);
1280         if (hFile == INVALID_HANDLE_VALUE)
1281         {
1282             if (p_csverbose)
1283             {
1284                 char *cant_msg = _("E625: cannot open cscope database: %s");
1285                 char *winmsg = GetWin32Error();
1286
1287                 if (winmsg != NULL)
1288                 {
1289                     (void)EMSG2(cant_msg, winmsg);
1290                     LocalFree(winmsg);
1291                 }
1292                 else
1293                     /* subst filename if can't get error text */
1294                     (void)EMSG2(cant_msg, fname);
1295             }
1296             return -1;
1297         }
1298         if (!GetFileInformationByHandle(hFile, &bhfi))
1299         {
1300             CloseHandle(hFile);
1301             if (p_csverbose)
1302                 (void)EMSG(_("E626: cannot get cscope database information"));
1303             return -1;
1304         }
1305         CloseHandle(hFile);
1306     }
1307 #endif
1308
1309     i = -1; /* can be set to the index of an empty item in csinfo */
1310     for (j = 0; j < CSCOPE_MAX_CONNECTIONS; j++)
1311     {
1312         if (csinfo[j].fname != NULL
1313 #if defined(UNIX)
1314             && csinfo[j].st_dev == sb->st_dev && csinfo[j].st_ino == sb->st_ino
1315 #else
1316             /* compare pathnames first */
1317             && ((fullpathcmp(csinfo[j].fname, fname, FALSE) & FPC_SAME)
1318                 /* if not Windows 9x, test index file attributes too */
1319                 || (!mch_windows95()
1320                     && csinfo[j].nVolume == bhfi.dwVolumeSerialNumber
1321                     && csinfo[j].nIndexHigh == bhfi.nFileIndexHigh
1322                     && csinfo[j].nIndexLow == bhfi.nFileIndexLow))
1323 #endif
1324             )
1325         {
1326             if (p_csverbose)
1327                 (void)EMSG(_("E568: duplicate cscope database not added"));
1328             return -1;
1329         }
1330
1331         if (csinfo[j].fname == NULL && i == -1)
1332             i = j; /* remember first empty entry */
1333     }
1334
1335     if (i == -1)
1336     {
1337         if (p_csverbose)
1338             (void)EMSG(_("E569: maximum number of cscope connections reached"));
1339         return -1;
1340     }
1341
1342     if ((csinfo[i].fname = (char *)alloc((unsigned)strlen(fname)+1)) == NULL)
1343         return -1;
1344
1345     (void)strcpy(csinfo[i].fname, (const char *)fname);
1346
1347     if (ppath != NULL)
1348     {
1349         if ((csinfo[i].ppath = (char *)alloc((unsigned)strlen(ppath) + 1)) == NULL)
1350         {
1351             vim_free(csinfo[i].fname);
1352             csinfo[i].fname = NULL;
1353             return -1;
1354         }
1355         (void)strcpy(csinfo[i].ppath, (const char *)ppath);
1356     } else
1357         csinfo[i].ppath = NULL;
1358
1359     if (flags != NULL)
1360     {
1361         if ((csinfo[i].flags = (char *)alloc((unsigned)strlen(flags) + 1)) == NULL)
1362         {
1363             vim_free(csinfo[i].fname);
1364             vim_free(csinfo[i].ppath);
1365             csinfo[i].fname = NULL;
1366             csinfo[i].ppath = NULL;
1367             return -1;
1368         }
1369         (void)strcpy(csinfo[i].flags, (const char *)flags);
1370     } else
1371         csinfo[i].flags = NULL;
1372
1373 #if defined(UNIX)
1374     csinfo[i].st_dev = sb->st_dev;
1375     csinfo[i].st_ino = sb->st_ino;
1376
1377 #else
1378     csinfo[i].nVolume = bhfi.dwVolumeSerialNumber;
1379     csinfo[i].nIndexLow = bhfi.nFileIndexLow;
1380     csinfo[i].nIndexHigh = bhfi.nFileIndexHigh;
1381 #endif
1382     return i;
1383 } /* cs_insert_filelist */
1384
1385
1386 /*
1387  * PRIVATE: cs_lookup_cmd
1388  *
1389  * find cscope command in command table
1390  */
1391     static cscmd_T *
1392 cs_lookup_cmd(eap)
1393     exarg_T *eap;
1394 {
1395     cscmd_T *cmdp;
1396     char *stok;
1397     size_t len;
1398
1399     if (eap->arg == NULL)
1400         return NULL;
1401
1402     /* Store length of eap->arg before it gets modified by strtok(). */
1403     eap_arg_len = STRLEN(eap->arg);
1404
1405     if ((stok = strtok((char *)(eap->arg), (const char *)" ")) == NULL)
1406         return NULL;
1407
1408     len = strlen(stok);
1409     for (cmdp = cs_cmds; cmdp->name != NULL; ++cmdp)
1410     {
1411         if (strncmp((const char *)(stok), cmdp->name, len) == 0)
1412             return (cmdp);
1413     }
1414     return NULL;
1415 } /* cs_lookup_cmd */
1416
1417
1418 /*
1419  * PRIVATE: cs_kill
1420  *
1421  * nuke em
1422  */
1423 /* ARGSUSED */
1424     static int
1425 cs_kill(eap)
1426     exarg_T *eap;
1427 {
1428     char *stok;
1429     short i;
1430
1431     if ((stok = strtok((char *)NULL, (const char *)" ")) == NULL)
1432     {
1433         cs_usage_msg(Kill);
1434         return CSCOPE_FAILURE;
1435     }
1436
1437     /* only single digit positive and negative integers are allowed */
1438     if ((strlen(stok) < 2 && VIM_ISDIGIT((int)(stok[0])))
1439             || (strlen(stok) < 3 && stok[0] == '-'
1440                                               && VIM_ISDIGIT((int)(stok[1]))))
1441         i = atoi(stok);
1442     else
1443     {
1444         /* It must be part of a name.  We will try to find a match
1445          * within all the names in the csinfo data structure
1446          */
1447         for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
1448         {
1449             if (csinfo[i].fname != NULL && strstr(csinfo[i].fname, stok))
1450                 break;
1451         }
1452     }
1453
1454     if ((i >= CSCOPE_MAX_CONNECTIONS || i < -1 || csinfo[i].fname == NULL)
1455             && i != -1)
1456     {
1457         if (p_csverbose)
1458             (void)EMSG2(_("E261: cscope connection %s not found"), stok);
1459     }
1460     else
1461     {
1462         if (i == -1)
1463         {
1464             for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
1465             {
1466                 if (csinfo[i].fname)
1467                     cs_kill_execute(i, csinfo[i].fname);
1468             }
1469         }
1470         else
1471             cs_kill_execute(i, stok);
1472     }
1473
1474     return 0;
1475 } /* cs_kill */
1476
1477
1478 /*
1479  * PRIVATE: cs_kill_execute
1480  *
1481  * Actually kills a specific cscope connection.
1482  */
1483     static void
1484 cs_kill_execute(i, cname)
1485     int i;          /* cscope table index */
1486     char *cname;    /* cscope database name */
1487 {
1488     if (p_csverbose)
1489     {
1490         msg_clr_eos();
1491         (void)smsg_attr(hl_attr(HLF_R) | MSG_HIST,
1492                 (char_u *)_("cscope connection %s closed"), cname);
1493     }
1494     cs_release_csp(i, TRUE);
1495 }
1496
1497
1498 /*
1499  * PRIVATE: cs_make_vim_style_matches
1500  *
1501  * convert the cscope output into into a ctags style entry (as might be found
1502  * in a ctags tags file).  there's one catch though: cscope doesn't tell you
1503  * the type of the tag you are looking for.  for example, in Darren Hiebert's
1504  * ctags (the one that comes with vim), #define's use a line number to find the
1505  * tag in a file while function definitions use a regexp search pattern.
1506  *
1507  * i'm going to always use the line number because cscope does something
1508  * quirky (and probably other things i don't know about):
1509  *
1510  *     if you have "#  define" in your source file, which is
1511  *     perfectly legal, cscope thinks you have "#define".  this
1512  *     will result in a failed regexp search. :(
1513  *
1514  * besides, even if this particular case didn't happen, the search pattern
1515  * would still have to be modified to escape all the special regular expression
1516  * characters to comply with ctags formatting.
1517  */
1518     static char *
1519 cs_make_vim_style_matches(fname, slno, search, tagstr)
1520     char *fname;
1521     char *slno;
1522     char *search;
1523     char *tagstr;
1524 {
1525     /* vim style is ctags:
1526      *
1527      *      <tagstr>\t<filename>\t<linenum_or_search>"\t<extra>
1528      *
1529      * but as mentioned above, we'll always use the line number and
1530      * put the search pattern (if one exists) as "extra"
1531      *
1532      * buf is used as part of vim's method of handling tags, and
1533      * (i think) vim frees it when you pop your tags and get replaced
1534      * by new ones on the tag stack.
1535      */
1536     char *buf;
1537     int amt;
1538
1539     if (search != NULL)
1540     {
1541         amt = (int)(strlen(fname) + strlen(slno) + strlen(tagstr) + strlen(search)+6);
1542         if ((buf = (char *)alloc(amt)) == NULL)
1543             return NULL;
1544
1545         (void)sprintf(buf, "%s\t%s\t%s;\"\t%s", tagstr, fname, slno, search);
1546     }
1547     else
1548     {
1549         amt = (int)(strlen(fname) + strlen(slno) + strlen(tagstr) + 5);
1550         if ((buf = (char *)alloc(amt)) == NULL)
1551             return NULL;
1552
1553         (void)sprintf(buf, "%s\t%s\t%s;\"", tagstr, fname, slno);
1554     }
1555
1556     return buf;
1557 } /* cs_make_vim_style_matches */
1558
1559
1560 /*
1561  * PRIVATE: cs_manage_matches
1562  *
1563  * this is kind of hokey, but i don't see an easy way round this..
1564  *
1565  * Store: keep a ptr to the (malloc'd) memory of matches originally
1566  * generated from cs_find().  the matches are originally lines directly
1567  * from cscope output, but transformed to look like something out of a
1568  * ctags.  see cs_make_vim_style_matches for more details.
1569  *
1570  * Get: used only from cs_fgets(), this simulates a vim_fgets() to return
1571  * the next line from the cscope output.  it basically keeps track of which
1572  * lines have been "used" and returns the next one.
1573  *
1574  * Free: frees up everything and resets
1575  *
1576  * Print: prints the tags
1577  */
1578     static char *
1579 cs_manage_matches(matches, contexts, totmatches, cmd)
1580     char **matches;
1581     char **contexts;
1582     int totmatches;
1583     mcmd_e cmd;
1584 {
1585     static char **mp = NULL;
1586     static char **cp = NULL;
1587     static int cnt = -1;
1588     static int next = -1;
1589     char *p = NULL;
1590
1591     switch (cmd)
1592     {
1593     case Store:
1594         assert(matches != NULL);
1595         assert(totmatches > 0);
1596         if (mp != NULL || cp != NULL)
1597             (void)cs_manage_matches(NULL, NULL, -1, Free);
1598         mp = matches;
1599         cp = contexts;
1600         cnt = totmatches;
1601         next = 0;
1602         break;
1603     case Get:
1604         if (next >= cnt)
1605             return NULL;
1606
1607         p = mp[next];
1608         next++;
1609         break;
1610     case Free:
1611         if (mp != NULL)
1612         {
1613             if (cnt > 0)
1614                 while (cnt--)
1615                 {
1616                     vim_free(mp[cnt]);
1617                     if (cp != NULL)
1618                         vim_free(cp[cnt]);
1619                 }
1620             vim_free(mp);
1621             vim_free(cp);
1622         }
1623         mp = NULL;
1624         cp = NULL;
1625         cnt = 0;
1626         next = 0;
1627         break;
1628     case Print:
1629         cs_print_tags_priv(mp, cp, cnt);
1630         break;
1631     default:    /* should not reach here */
1632         (void)EMSG(_("E570: fatal error in cs_manage_matches"));
1633         return NULL;
1634     }
1635
1636     return p;
1637 } /* cs_manage_matches */
1638
1639
1640 /*
1641  * PRIVATE: cs_parse_results
1642  *
1643  * parse cscope output
1644  */
1645     static char *
1646 cs_parse_results(cnumber, buf, bufsize, context, linenumber, search)
1647     int cnumber;
1648     char *buf;
1649     int bufsize;
1650     char **context;
1651     char **linenumber;
1652     char **search;
1653 {
1654     int ch;
1655     char *p;
1656     char *name;
1657
1658     if (fgets(buf, bufsize, csinfo[cnumber].fr_fp) == NULL)
1659     {
1660         if (feof(csinfo[cnumber].fr_fp))
1661             errno = EIO;
1662
1663         cs_reading_emsg(cnumber);
1664
1665         return NULL;
1666     }
1667
1668         /* If the line's too long for the buffer, discard it. */
1669     if ((p = strchr(buf, '\n')) == NULL)
1670     {
1671         while ((ch = getc(csinfo[cnumber].fr_fp)) != EOF && ch != '\n')
1672             ;
1673         return NULL;
1674     }
1675     *p = '\0';
1676
1677     /*
1678      * cscope output is in the following format:
1679      *
1680      *  <filename> <context> <line number> <pattern>
1681      */
1682     if ((name = strtok((char *)buf, (const char *)" ")) == NULL)
1683         return NULL;
1684     if ((*context = strtok(NULL, (const char *)" ")) == NULL)
1685         return NULL;
1686     if ((*linenumber = strtok(NULL, (const char *)" ")) == NULL)
1687         return NULL;
1688     *search = *linenumber + strlen(*linenumber) + 1;    /* +1 to skip \0 */
1689
1690     /* --- nvi ---
1691      * If the file is older than the cscope database, that is,
1692      * the database was built since the file was last modified,
1693      * or there wasn't a search string, use the line number.
1694      */
1695     if (strcmp(*search, "<unknown>") == 0)
1696         *search = NULL;
1697
1698     name = cs_resolve_file(cnumber, name);
1699     return name;
1700 }
1701
1702 #ifdef FEAT_QUICKFIX
1703 /*
1704  * PRIVATE: cs_file_results
1705  *
1706  * write cscope find results to file
1707  */
1708     static void
1709 cs_file_results(f, nummatches_a)
1710     FILE *f;
1711     int *nummatches_a;
1712 {
1713     int i, j;
1714     char *buf;
1715     char *search, *slno;
1716     char *fullname;
1717     char *cntx;
1718     char *context;
1719
1720     buf = (char *)alloc(CSREAD_BUFSIZE);
1721     if (buf == NULL)
1722         return;
1723
1724     for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
1725     {
1726         if (nummatches_a[i] < 1)
1727             continue;
1728
1729         for (j = 0; j < nummatches_a[i]; j++)
1730         {
1731            if ((fullname = cs_parse_results(i, buf, CSREAD_BUFSIZE, &cntx,
1732                            &slno, &search)) == NULL)
1733                continue;
1734
1735            context = (char *)alloc((unsigned)strlen(cntx)+5);
1736            if (context == NULL)
1737                continue;
1738
1739            if (strcmp(cntx, "<global>")==0)
1740                strcpy(context, "<<global>>");
1741            else
1742                sprintf(context, "<<%s>>", cntx);
1743
1744            if (search == NULL)
1745                fprintf(f, "%s\t%s\t%s\n", fullname, slno, context);
1746            else
1747                fprintf(f, "%s\t%s\t%s %s\n", fullname, slno, context, search);
1748
1749            vim_free(context);
1750            vim_free(fullname);
1751         } /* for all matches */
1752
1753         (void)cs_read_prompt(i);
1754
1755     } /* for all cscope connections */
1756     vim_free(buf);
1757 }
1758 #endif
1759
1760 /*
1761  * PRIVATE: cs_fill_results
1762  *
1763  * get parsed cscope output and calls cs_make_vim_style_matches to convert
1764  * into ctags format
1765  * When there are no matches sets "*matches_p" to NULL.
1766  */
1767     static void
1768 cs_fill_results(tagstr, totmatches, nummatches_a, matches_p, cntxts_p, matched)
1769     char *tagstr;
1770     int totmatches;
1771     int *nummatches_a;
1772     char ***matches_p;
1773     char ***cntxts_p;
1774     int *matched;
1775 {
1776     int i, j;
1777     char *buf;
1778     char *search, *slno;
1779     int totsofar = 0;
1780     char **matches = NULL;
1781     char **cntxts = NULL;
1782     char *fullname;
1783     char *cntx;
1784
1785     assert(totmatches > 0);
1786
1787     buf = (char *)alloc(CSREAD_BUFSIZE);
1788     if (buf == NULL)
1789         return;
1790
1791     if ((matches = (char **)alloc(sizeof(char *) * totmatches)) == NULL)
1792         goto parse_out;
1793     if ((cntxts = (char **)alloc(sizeof(char *) * totmatches)) == NULL)
1794         goto parse_out;
1795
1796     for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
1797     {
1798         if (nummatches_a[i] < 1)
1799             continue;
1800
1801         for (j = 0; j < nummatches_a[i]; j++)
1802         {
1803            if ((fullname = cs_parse_results(i, buf, CSREAD_BUFSIZE, &cntx,
1804                            &slno, &search)) == NULL)
1805                 continue;
1806
1807             matches[totsofar] = cs_make_vim_style_matches(fullname, slno,
1808                                                           search, tagstr);
1809
1810             vim_free(fullname);
1811
1812             if (strcmp(cntx, "<global>") == 0)
1813                 cntxts[totsofar] = NULL;
1814             else
1815                 /* note: if vim_strsave returns NULL, then the context
1816                  * will be "<global>", which is misleading.
1817                  */
1818                 cntxts[totsofar] = (char *)vim_strsave((char_u *)cntx);
1819
1820             if (matches[totsofar] != NULL)
1821                 totsofar++;
1822
1823         } /* for all matches */
1824
1825         (void)cs_read_prompt(i);
1826
1827     } /* for all cscope connections */
1828
1829 parse_out:
1830     if (totsofar == 0)
1831     {
1832         /* No matches, free the arrays and return NULL in "*matches_p". */
1833         vim_free(matches);
1834         matches = NULL;
1835         vim_free(cntxts);
1836         cntxts = NULL;
1837     }
1838     *matched = totsofar;
1839     *matches_p = matches;
1840     *cntxts_p = cntxts;
1841
1842     vim_free(buf);
1843 } /* cs_fill_results */
1844
1845
1846 /* get the requested path components */
1847     static char *
1848 cs_pathcomponents(path)
1849     char        *path;
1850 {
1851     int         i;
1852     char        *s;
1853
1854     if (p_cspc == 0)
1855         return path;
1856
1857     s = path + strlen(path) - 1;
1858     for (i = 0; i < p_cspc; ++i)
1859         while (s > path && *--s != '/'
1860 #ifdef WIN32
1861                 && *--s != '\\'
1862 #endif
1863                 )
1864             ;
1865     if ((s > path && *s == '/')
1866 #ifdef WIN32
1867         || (s > path && *s == '\\')
1868 #endif
1869             )
1870         ++s;
1871     return s;
1872 }
1873
1874 /*
1875  * PRIVATE: cs_print_tags_priv
1876  *
1877  * called from cs_manage_matches()
1878  */
1879     static void
1880 cs_print_tags_priv(matches, cntxts, num_matches)
1881     char **matches;
1882     char **cntxts;
1883     int num_matches;
1884 {
1885     char        *buf = NULL;
1886     int         bufsize = 0; /* Track available bufsize */
1887     int         newsize = 0;
1888     char        *ptag;
1889     char        *fname, *lno, *extra, *tbuf;
1890     int         i, idx, num;
1891     char        *globalcntx = "GLOBAL";
1892     char        *cntxformat = " <<%s>>";
1893     char        *context;
1894     char        *cstag_msg = _("Cscope tag: %s");
1895     char        *csfmt_str = "%4d %6s  ";
1896
1897     assert (num_matches > 0);
1898
1899     if ((tbuf = (char *)alloc((unsigned)strlen(matches[0]) + 1)) == NULL)
1900         return;
1901
1902     strcpy(tbuf, matches[0]);
1903     ptag = strtok(tbuf, "\t");
1904
1905     newsize = (int)(strlen(cstag_msg) + strlen(ptag));
1906     buf = (char *)alloc(newsize);
1907     if (buf != NULL)
1908     {
1909         bufsize = newsize;
1910         (void)sprintf(buf, cstag_msg, ptag);
1911         MSG_PUTS_ATTR(buf, hl_attr(HLF_T));
1912     }
1913
1914     vim_free(tbuf);
1915
1916     MSG_PUTS_ATTR(_("\n   #   line"), hl_attr(HLF_T));    /* strlen is 7 */
1917     msg_advance(msg_col + 2);
1918     MSG_PUTS_ATTR(_("filename / context / line\n"), hl_attr(HLF_T));
1919
1920     num = 1;
1921     for (i = 0; i < num_matches; i++)
1922     {
1923         idx = i;
1924
1925         /* if we really wanted to, we could avoid this malloc and strcpy
1926          * by parsing matches[i] on the fly and placing stuff into buf
1927          * directly, but that's too much of a hassle
1928          */
1929         if ((tbuf = (char *)alloc((unsigned)strlen(matches[idx]) + 1)) == NULL)
1930             continue;
1931         (void)strcpy(tbuf, matches[idx]);
1932
1933         if ((fname = strtok(tbuf, (const char *)"\t")) == NULL)
1934             continue;
1935         if ((fname = strtok(NULL, (const char *)"\t")) == NULL)
1936             continue;
1937         if ((lno = strtok(NULL, (const char *)"\t")) == NULL)
1938             continue;
1939         extra = strtok(NULL, (const char *)"\t");
1940
1941         lno[strlen(lno)-2] = '\0';  /* ignore ;" at the end */
1942
1943         /* hopefully 'num' (num of matches) will be less than 10^16 */
1944         newsize = (int)(strlen(csfmt_str) + 16 + strlen(lno));
1945         if (bufsize < newsize)
1946         {
1947             buf = (char *)vim_realloc(buf, newsize);
1948             if (buf == NULL)
1949                 bufsize = 0;
1950             else
1951                 bufsize = newsize;
1952         }
1953         if (buf != NULL)
1954         {
1955             /* csfmt_str = "%4d %6s  "; */
1956             (void)sprintf(buf, csfmt_str, num, lno);
1957             MSG_PUTS_ATTR(buf, hl_attr(HLF_CM));
1958         }
1959         MSG_PUTS_LONG_ATTR(cs_pathcomponents(fname), hl_attr(HLF_CM));
1960
1961         /* compute the required space for the context */
1962         if (cntxts[idx] != NULL)
1963             context = cntxts[idx];
1964         else
1965             context = globalcntx;
1966         newsize = (int)(strlen(context) + strlen(cntxformat));
1967
1968         if (bufsize < newsize)
1969         {
1970             buf = (char *)vim_realloc(buf, newsize);
1971             if (buf == NULL)
1972                 bufsize = 0;
1973             else
1974                 bufsize = newsize;
1975         }
1976         if (buf != NULL)
1977         {
1978             (void)sprintf(buf, cntxformat, context);
1979
1980             /* print the context only if it fits on the same line */
1981             if (msg_col + (int)strlen(buf) >= (int)Columns)
1982                 msg_putchar('\n');
1983             msg_advance(12);
1984             MSG_PUTS_LONG(buf);
1985             msg_putchar('\n');
1986         }
1987         if (extra != NULL)
1988         {
1989             msg_advance(13);
1990             MSG_PUTS_LONG(extra);
1991         }
1992
1993         vim_free(tbuf); /* only after printing extra due to strtok use */
1994
1995         if (msg_col)
1996             msg_putchar('\n');
1997
1998         ui_breakcheck();
1999         if (got_int)
2000         {
2001             got_int = FALSE;    /* don't print any more matches */
2002             break;
2003         }
2004
2005         num++;
2006     } /* for all matches */
2007
2008     vim_free(buf);
2009 } /* cs_print_tags_priv */
2010
2011
2012 /*
2013  * PRIVATE: cs_read_prompt
2014  *
2015  * read a cscope prompt (basically, skip over the ">> ")
2016  */
2017     static int
2018 cs_read_prompt(i)
2019     int i;
2020 {
2021     int         ch;
2022     char        *buf = NULL; /* buffer for possible error message from cscope */
2023     int         bufpos = 0;
2024     char        *cs_emsg;
2025     int         maxlen;
2026     static char *eprompt = "Press the RETURN key to continue:";
2027     int         epromptlen = (int)strlen(eprompt);
2028     int         n;
2029
2030     cs_emsg = _("E609: Cscope error: %s");
2031     /* compute maximum allowed len for Cscope error message */
2032     maxlen = (int)(IOSIZE - strlen(cs_emsg));
2033
2034     for (;;)
2035     {
2036         while ((ch = getc(csinfo[i].fr_fp)) != EOF && ch != CSCOPE_PROMPT[0])
2037             /* if there is room and char is printable */
2038             if (bufpos < maxlen - 1 && vim_isprintc(ch))
2039             {
2040                 if (buf == NULL) /* lazy buffer allocation */
2041                     buf = (char *)alloc(maxlen);
2042                 if (buf != NULL)
2043                 {
2044                     /* append character to the message */
2045                     buf[bufpos++] = ch;
2046                     buf[bufpos] = NUL;
2047                     if (bufpos >= epromptlen
2048                             && strcmp(&buf[bufpos - epromptlen], eprompt) == 0)
2049                     {
2050                         /* remove eprompt from buf */
2051                         buf[bufpos - epromptlen] = NUL;
2052
2053                         /* print message to user */
2054                         (void)EMSG2(cs_emsg, buf);
2055
2056                         /* send RETURN to cscope */
2057                         (void)putc('\n', csinfo[i].to_fp);
2058                         (void)fflush(csinfo[i].to_fp);
2059
2060                         /* clear buf */
2061                         bufpos = 0;
2062                         buf[bufpos] = NUL;
2063                     }
2064                 }
2065             }
2066
2067         for (n = 0; n < (int)strlen(CSCOPE_PROMPT); ++n)
2068         {
2069             if (n > 0)
2070                 ch = getc(csinfo[i].fr_fp);
2071             if (ch == EOF)
2072             {
2073                 PERROR("cs_read_prompt EOF");
2074                 if (buf != NULL && buf[0] != NUL)
2075                     (void)EMSG2(cs_emsg, buf);
2076                 else if (p_csverbose)
2077                     cs_reading_emsg(i); /* don't have additional information */
2078                 cs_release_csp(i, TRUE);
2079                 vim_free(buf);
2080                 return CSCOPE_FAILURE;
2081             }
2082
2083             if (ch != CSCOPE_PROMPT[n])
2084             {
2085                 ch = EOF;
2086                 break;
2087             }
2088         }
2089
2090         if (ch == EOF)
2091             continue;       /* didn't find the prompt */
2092         break;              /* did find the prompt */
2093     }
2094
2095     vim_free(buf);
2096     return CSCOPE_SUCCESS;
2097 }
2098
2099
2100 /*
2101  * PRIVATE: cs_release_csp
2102  *
2103  * Does the actual free'ing for the cs ptr with an optional flag of whether
2104  * or not to free the filename.  Called by cs_kill and cs_reset.
2105  */
2106     static void
2107 cs_release_csp(i, freefnpp)
2108     int i;
2109     int freefnpp;
2110 {
2111 #if defined(UNIX)
2112     int pstat;
2113 #else
2114     /*
2115      * Trying to exit normally (not sure whether it is fit to UNIX cscope
2116      */
2117     if (csinfo[i].to_fp != NULL)
2118     {
2119         (void)fputs("q\n", csinfo[i].to_fp);
2120         (void)fflush(csinfo[i].to_fp);
2121     }
2122     if (csinfo[i].hProc != NULL)
2123     {
2124         /* Give cscope a chance to exit normally */
2125         if (WaitForSingleObject(csinfo[i].hProc, 1000) == WAIT_TIMEOUT)
2126             TerminateProcess(csinfo[i].hProc, 0);
2127         CloseHandle(csinfo[i].hProc);
2128     }
2129 #endif
2130
2131     if (csinfo[i].fr_fp != NULL)
2132         (void)fclose(csinfo[i].fr_fp);
2133     if (csinfo[i].to_fp != NULL)
2134         (void)fclose(csinfo[i].to_fp);
2135
2136     /*
2137      * Safety check: If the PID would be zero here, the entire X session would
2138      * be killed.  -1 and 1 are dangerous as well.
2139      */
2140 #if defined(UNIX)
2141     if (csinfo[i].pid > 1)
2142     {
2143         kill(csinfo[i].pid, SIGTERM);
2144         (void)waitpid(csinfo[i].pid, &pstat, 0);
2145     }
2146 #endif
2147
2148     if (freefnpp)
2149     {
2150         vim_free(csinfo[i].fname);
2151         vim_free(csinfo[i].ppath);
2152         vim_free(csinfo[i].flags);
2153     }
2154
2155     clear_csinfo(i);
2156 } /* cs_release_csp */
2157
2158
2159 /*
2160  * PRIVATE: cs_reset
2161  *
2162  * calls cs_kill on all cscope connections then reinits
2163  */
2164 /* ARGSUSED */
2165     static int
2166 cs_reset(eap)
2167     exarg_T *eap;
2168 {
2169     char        **dblist = NULL, **pplist = NULL, **fllist = NULL;
2170     int i;
2171     char buf[20]; /* for sprintf " (#%d)" */
2172
2173     /* malloc our db and ppath list */
2174     dblist = (char **)alloc(CSCOPE_MAX_CONNECTIONS * sizeof(char *));
2175     pplist = (char **)alloc(CSCOPE_MAX_CONNECTIONS * sizeof(char *));
2176     fllist = (char **)alloc(CSCOPE_MAX_CONNECTIONS * sizeof(char *));
2177     if (dblist == NULL || pplist == NULL || fllist == NULL)
2178     {
2179         vim_free(dblist);
2180         vim_free(pplist);
2181         vim_free(fllist);
2182         return CSCOPE_FAILURE;
2183     }
2184
2185     for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
2186     {
2187         dblist[i] = csinfo[i].fname;
2188         pplist[i] = csinfo[i].ppath;
2189         fllist[i] = csinfo[i].flags;
2190         if (csinfo[i].fname != NULL)
2191             cs_release_csp(i, FALSE);
2192     }
2193
2194     /* rebuild the cscope connection list */
2195     for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
2196     {
2197         if (dblist[i] != NULL)
2198         {
2199             cs_add_common(dblist[i], pplist[i], fllist[i]);
2200             if (p_csverbose)
2201             {
2202                 /* don't use smsg_attr() because we want to display the
2203                  * connection number in the same line as
2204                  * "Added cscope database..."
2205                  */
2206                 sprintf(buf, " (#%d)", i);
2207                 MSG_PUTS_ATTR(buf, hl_attr(HLF_R));
2208             }
2209         }
2210         vim_free(dblist[i]);
2211         vim_free(pplist[i]);
2212         vim_free(fllist[i]);
2213     }
2214     vim_free(dblist);
2215     vim_free(pplist);
2216     vim_free(fllist);
2217
2218     if (p_csverbose)
2219         MSG_ATTR(_("All cscope databases reset"), hl_attr(HLF_R) | MSG_HIST);
2220     return CSCOPE_SUCCESS;
2221 } /* cs_reset */
2222
2223
2224 /*
2225  * PRIVATE: cs_resolve_file
2226  *
2227  * construct the full pathname to a file found in the cscope database.
2228  * (Prepends ppath, if there is one and if it's not already prepended,
2229  * otherwise just uses the name found.)
2230  *
2231  * we need to prepend the prefix because on some cscope's (e.g., the one that
2232  * ships with Solaris 2.6), the output never has the prefix prepended.
2233  * contrast this with my development system (Digital Unix), which does.
2234  */
2235     static char *
2236 cs_resolve_file(i, name)
2237     int i;
2238     char *name;
2239 {
2240     char *fullname;
2241     int len;
2242
2243     /*
2244      * ppath is freed when we destroy the cscope connection.
2245      * fullname is freed after cs_make_vim_style_matches, after it's been
2246      * copied into the tag buffer used by vim
2247      */
2248     len = (int)(strlen(name) + 2);
2249     if (csinfo[i].ppath != NULL)
2250         len += (int)strlen(csinfo[i].ppath);
2251
2252     if ((fullname = (char *)alloc(len)) == NULL)
2253         return NULL;
2254
2255     /*
2256      * note/example: this won't work if the cscope output already starts
2257      * "../.." and the prefix path is also "../..".  if something like this
2258      * happens, you are screwed up and need to fix how you're using cscope.
2259      */
2260     if (csinfo[i].ppath != NULL &&
2261         (strncmp(name, csinfo[i].ppath, strlen(csinfo[i].ppath)) != 0) &&
2262         (name[0] != '/')
2263 #ifdef WIN32
2264         && name[0] != '\\' && name[1] != ':'
2265 #endif
2266         )
2267         (void)sprintf(fullname, "%s/%s", csinfo[i].ppath, name);
2268     else
2269         (void)sprintf(fullname, "%s", name);
2270
2271     return fullname;
2272 } /* cs_resolve_file */
2273
2274
2275 /*
2276  * PRIVATE: cs_show
2277  *
2278  * show all cscope connections
2279  */
2280 /* ARGSUSED */
2281     static int
2282 cs_show(eap)
2283     exarg_T *eap;
2284 {
2285     short i;
2286     if (cs_cnt_connections() == 0)
2287         MSG_PUTS(_("no cscope connections\n"));
2288     else
2289     {
2290         MSG_PUTS_ATTR(
2291             _(" # pid    database name                       prepend path\n"),
2292             hl_attr(HLF_T));
2293         for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
2294         {
2295             if (csinfo[i].fname == NULL)
2296                 continue;
2297
2298             if (csinfo[i].ppath != NULL)
2299                 (void)smsg((char_u *)"%2d %-5ld  %-34s  %-32s",
2300                     i, (long)csinfo[i].pid, csinfo[i].fname, csinfo[i].ppath);
2301             else
2302                 (void)smsg((char_u *)"%2d %-5ld  %-34s  <none>",
2303                            i, (long)csinfo[i].pid, csinfo[i].fname);
2304         }
2305     }
2306
2307     wait_return(TRUE);
2308     return CSCOPE_SUCCESS;
2309 } /* cs_show */
2310
2311
2312 /*
2313  * PUBLIC: cs_end
2314  *
2315  * Only called when VIM exits to quit any cscope sessions.
2316  */
2317     void
2318 cs_end()
2319 {
2320     int i;
2321
2322     for (i = 0; i < CSCOPE_MAX_CONNECTIONS; i++)
2323         cs_release_csp(i, TRUE);
2324 }
2325
2326 #endif  /* FEAT_CSCOPE */
2327
2328 /* the end */