4.3BSD - /usr/src/new/spms/src/bin/pwp/pwp.c

   1: static char *rcsid = "$Header$";
   2: /*
   3:  * pwp - path to working project
   4:  *
   5:  * Author: Peter J. Nicklin
   6:  */
   7: #include <pwd.h>
   8: #include <stdio.h>
   9: #include "macro.h"
  10: #include "null.h"
  11: #include "path.h"
  12: #include "pdb.h"
  13: #include "pdbuf.h"
  14: #include "pld.h"
  15: #include "spms.h"
  16: #include "yesno.h"
  17: 
  18: #define PASSWDFILE  "/etc/passwd"
  19: 
  20: char *PGN = "pwp";          /* program name */
  21: 
  22: main(argc, argv)
  23:     int argc;
  24:     char **argv;
  25: {
  26:     extern int PPDEBUG;     /* project pathname debug flag */
  27:     char alias[ALIASSIZE];      /* project alias */
  28:     char *cwp;          /* current working  project */
  29:     char *getcwp();         /* get current working project */
  30:     char *gethdir();        /* get home directory pathname */
  31:     char lastcwp[PATHSIZE];     /* last current working project */
  32:     char *pbfndstring();        /* find string field */
  33:     char *pbgetkey();       /* get next key */
  34:     char ppathname[PPATHSIZE];  /* project pathname */
  35:     char *ppptr = &ppathname[(sizeof ppathname)-1];
  36:                     /* project pathname pointer */
  37:     char *prepend();        /* prepend projectname to pathname */
  38:     char *relpath;          /* relative pathname */
  39:     char *strcpy();         /* string copy */
  40:     char *xorpath();        /* remove subpathname */
  41:     int chproject();        /* change working project */
  42:     int closepdb();         /* close database */
  43:     int errpdb();           /* print database error message */
  44:     int lflag = NO;         /* long format flag */
  45:     int pbcmpfield();       /* compare non-key fields */
  46:     int pbfndflag();        /* find flag field */
  47:     int pgetent();          /* load next entry into buffer */
  48:     int status = 0;         /* exit status */
  49:     PDB *pldp;          /* project link directory stream */
  50:     PDB *openpdb();         /* open database */
  51:     struct passwd *getpwdir();  /* get password file entry for dir */
  52:     struct passwd *pw;      /* password entry pointer */
  53: 
  54:     {
  55:     register char *s;       /* option pointer */
  56:     while (--argc > 0 && **++argv == '-')
  57:         {
  58:         for (s = argv[0]+1; *s != '\0'; s++)
  59:             switch (*s)
  60:                 {
  61:                 case 'D':
  62:                     PPDEBUG = YES;
  63:                     break;
  64:                 case 'l':
  65:                     lflag = YES;
  66:                     break;
  67:                 default:
  68:                     warn("bad option -%c", *s);
  69:                     status = 1;
  70:                     goto endfor;
  71:                 }
  72:         endfor: continue;
  73:         }
  74:     }
  75:     if (status == 1 || argc > 0)
  76:         fatal("usage: pwp [-l]");
  77: 
  78:     if ((cwp = getcwp()) == NULL)
  79:         fatal("no project environment");
  80:     if (lflag == YES)
  81:         printf("%s\n", cwp);
  82:     else    {
  83:         for (;;)
  84:             {
  85:             strcpy(lastcwp, cwp);
  86:             chproject(PARENTPROJECT);
  87:             cwp = getcwp();
  88:             chdir(cwp);
  89:             if (EQUAL(cwp, lastcwp))
  90:                 break;      /* reached home directory */
  91:             relpath = xorpath(cwp, lastcwp);
  92:             if ((pldp = openpdb(PLDNAME, CURDIR, "r")) == NULL)
  93:                 exit(errpdb((PDB *) NULL));
  94:             while (pgetent(pldp) != EOF)
  95:                 {
  96:                 if (pbfndflag(PROOTDIR) == NO)
  97:                     continue;
  98:                 if (pbcmpfield(relpath, pbfndstring(PDIRPATH)) == 0)
  99:                     break;
 100:                 }
 101:             ppptr = prepend(PPATHSEP, prepend(pbgetkey(alias), ppptr));
 102:             closepdb(pldp);
 103:             }
 104:         if (!EQUAL(cwp, gethdir(CNULL)))
 105:             if ((pw = getpwdir(cwp)) == NULL)
 106:                 {
 107:                 warn("can't find %s home directory in %s", cwp,
 108:                      PASSWDFILE);
 109:                 }
 110:             else    {
 111:                 ppptr = prepend(USERPROJECT, prepend(pw->pw_name, ppptr));
 112:                 }
 113:         printf("%s\n", (*ppptr == '\0') ? ROOTPROJECT : ppptr);
 114:         }
 115:     exit(0);
 116: }
 117: 
 118: 
 119: 
 120: /*
 121:  * prepend() tacks a project alias onto the front of a project pathname.
 122:  */
 123: static char *
 124: prepend(alias, ppathname)
 125:     register char *alias;
 126:     register char *ppathname;
 127: {
 128:     register int i;         /* alias name size counter */
 129: 
 130:     for (i = 0; *alias != '\0'; i++, alias++)
 131:         continue;
 132:     while (i-- > 0)
 133:         *--ppathname = *--alias;
 134:     return(ppathname);
 135: }

Defined functions

Defined variables

Defined macros