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/* Copyright (c) 1992 Regents of the University of California */ |
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/* Copyright (c) 1990 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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#ifndef ULIBVAR |
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#define ULIBVAR "RAYPATH" |
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#endif |
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#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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char *libpath = NULL; /* library search path */ |
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if (fname == NULL) |
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return(NULL); |
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if (fname[0] == '/' || fname[0] == '.') /* absolute path */ |
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if (fname[0] == DIRSEP || fname[0] == '.') /* absolute path */ |
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return(fopen(fname, "r")); |
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if (libpath == NULL) { /* get search path */ |
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sp = libpath; |
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do { |
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cp = pname; |
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while (*sp && (*cp = *sp++) != ':') |
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if (*cp == '\\') { /* escape */ |
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if (*sp) *cp++ = *sp++; |
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} else |
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cp++; |
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if (cp > pname && cp[-1] != '/') |
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*cp++ = '/'; |
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while (*sp && (*cp = *sp++) != 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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strcpy(cp, fname); |
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if ((fp = fopen(pname, "r")) != NULL) |
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return(fp); /* got it! */ |
