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greg |
1.1 |
/* Copyright (c) 1991 Regents of the University of California */
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#ifndef lint
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static char SCCSid[] = "$SunId$ LBL";
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#endif
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/*
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* getpath.c - function to search for file in a list of directories
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*/
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#define NULL 0
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#include <pwd.h>
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greg |
2.3 |
#ifndef DIRSEP
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#define DIRSEP '/'
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#endif
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#ifndef PATHSEP
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#define PATHSEP ':'
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#endif
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greg |
1.1 |
extern char *strcpy(), *strcat(), *getenv();
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extern struct passwd *getpwnam();
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char *
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getpath(fname, searchpath, mode) /* expand fname, return full path */
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register char *fname;
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register char *searchpath;
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int mode;
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{
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static char pname[256];
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struct passwd *pwent;
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register char *cp;
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if (fname == NULL)
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return(NULL);
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switch (*fname) {
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greg |
2.3 |
case DIRSEP: /* relative to root */
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greg |
1.1 |
case '.': /* relative to cwd */
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strcpy(pname, fname);
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return(pname);
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greg |
2.3 |
#ifndef NIX
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greg |
1.1 |
case '~': /* relative to home directory */
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fname++;
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greg |
2.3 |
if (*fname == '\0' || *fname == DIRSEP) { /* ours */
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greg |
1.1 |
if ((cp = getenv("HOME")) == NULL)
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return(NULL);
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strcpy(pname, cp);
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strcat(pname, fname);
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return(pname);
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}
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cp = pname; /* user */
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do
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*cp++ = *fname++;
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greg |
2.3 |
while (*fname && *fname != DIRSEP);
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greg |
1.1 |
*cp = '\0';
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if ((pwent = getpwnam(pname)) == NULL)
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return(NULL);
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strcpy(pname, pwent->pw_dir);
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strcat(pname, fname);
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return(pname);
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greg |
2.3 |
#endif
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greg |
1.1 |
}
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if (searchpath == NULL) { /* don't search */
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strcpy(pname, fname);
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return(pname);
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}
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/* check search path */
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do {
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cp = pname;
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greg |
2.3 |
while (*searchpath && (*cp = *searchpath++) != PATHSEP)
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cp++;
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if (cp > pname && cp[-1] != DIRSEP)
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*cp++ = DIRSEP;
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greg |
1.1 |
strcpy(cp, fname);
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if (access(pname, mode) == 0) /* file accessable? */
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return(pname);
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} while (*searchpath);
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/* not found */
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return(NULL);
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}
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