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- /*LINTLIBRARY*/
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
-
- #define max(A,B) (((A)<(B))?(B):(A))
-
- extern char *mktemp();
- extern int access();
-
- static char *cpdir();
- static char *seed="AAA";
-
- /* BSD stdio.h doesn't define P_tmpdir, so let's do it here */
- #ifndef P_tmpdir
- static char *P_tmpdir = "/tmp";
- #endif
-
- char *
- tempnam(dir, prefix)
- char *dir; /* use this directory please (if non-NULL) */
- char *prefix; /* use this (if non-NULL) as filename prefix */
- {
- register char *p, *q, *tmpdir;
- int tl=0, dl=0, pl;
-
- pl = strlen(P_tmpdir);
-
- if( (tmpdir = getenv("TMPDIR")) != NULL ) tl = strlen(tmpdir);
- if( dir != NULL ) dl = strlen(dir);
-
- if( (p = malloc((unsigned)(max(max(dl,tl),pl)+16))) == NULL )
- return(NULL);
-
- *p = '\0';
-
- if( (tl == 0) || (access( cpdir(p, tmpdir), 3) != 0) )
- if( (dl == 0) || (access( cpdir(p, dir), 3) != 0) )
- if( access( cpdir(p, P_tmpdir), 3) != 0 )
- if( access( cpdir(p, "/tmp"), 3) != 0 )
- return(NULL);
-
- (void) strcat(p, "/");
- if(prefix)
- {
- *(p+strlen(p)+5) = '\0';
- (void)strncat(p, prefix, 5);
- }
-
- (void)strcat(p, seed);
- (void)strcat(p, "XXXXXX");
-
- q = seed;
- while(*q == 'Z') *q++ = 'A';
- ++*q;
-
- if(*mktemp(p) == '\0') return(NULL);
- return(p);
- }
-
-
-
- static char *
- cpdir(buf, str)
- char *buf;
- char *str;
- {
- char *p;
-
- if(str != NULL)
- {
- (void) strcpy(buf, str);
- p = buf - 1 + strlen(buf);
- if(*p == '/') *p = '\0';
- }
-
- return(buf);
- }
-