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- /*
- * $Source: /mit/jik/src/delete/RCS/util.c,v $
- * $Author: jik $
- *
- * This program is a replacement for rm. Instead of actually deleting
- * files, it marks them for deletion by prefixing them with a ".#"
- * prefix.
- *
- * Copyright (c) 1989 by the Massachusetts Institute of Technology.
- * For copying and distribution information, see the file "mit-copyright.h."
- */
-
- #if (!defined(lint) && !defined(SABER))
- static char rcsid_util_c[] = "$Header: util.c,v 1.7 89/03/27 12:08:34 jik Exp $";
- #endif
-
- #include <stdio.h>
- #include <sys/param.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <sys/dir.h>
- #include <strings.h>
- #include <pwd.h>
- #include "directories.h"
- #include "util.h"
- #include "mit-copyright.h"
-
- char *getenv();
-
-
- char *convert_to_user_name(real_name, user_name)
- char real_name[];
- char user_name[]; /* RETURN */
- {
- char *ptr, *q;
-
- strcpy(user_name, real_name);
- while (ptr = strrindex(user_name, ".#")) {
- for (q = ptr; *(q + 2); q++)
- *q = *(q + 2);
- *q = '\0';
- }
- return (user_name);
- }
-
-
-
-
-
- char *strindex(str, sub_str)
- char *str, *sub_str;
- {
- char *ptr = str;
- while (ptr = index(ptr, *sub_str)) {
- if (! strncmp(ptr, sub_str, strlen(sub_str)))
- return(ptr);
- ptr++;
- }
- return ((char *) NULL);
- }
-
-
-
- char *strrindex(str, sub_str)
- char *str, *sub_str;
- {
- char *ptr;
-
- if (strlen(str))
- ptr = &str[strlen(str) - 1];
- else
- return((char *) NULL);
- while ((*ptr != *sub_str) && (ptr != str)) ptr--;
- while (ptr != str) {
- if (! strncmp(ptr, sub_str, strlen(sub_str)))
- return(ptr);
- ptr--;
- while ((*ptr != *sub_str) && (ptr != str)) ptr--;
- }
- if (! strncmp(ptr, sub_str, strlen(sub_str)))
- return(str);
- else
- return ((char *) NULL);
- }
-
-
- is_dotfile(filename)
- char *filename;
- {
- return (! (strcmp(filename, ".") && strcmp(filename, "..")));
- }
-
-
-
- int is_deleted(filename)
- char *filename;
- {
- return(! strncmp(filename, ".#", 2));
- }
-
-
-
-
- /*
- * NOTE: Append uses a static array, so its return value must be
- * copied immediately.
- */
- char *append(filepath, filename)
- char *filepath, *filename;
- {
- static char buf[MAXPATHLEN];
-
- strcpy(buf, filepath);
- if ((! *filename) || (! *filepath)) {
- strcpy(buf, filename);
- return(buf);
- }
- if (buf[strlen(buf) - 1] == '/')
- buf[strlen(buf) - 1] = '\0';
- if (strlen(buf) + strlen(filename) + 2 > MAXPATHLEN) {
- *buf = '\0';
- return(buf);
- }
- strcat(buf, "/");
- strcat(buf, filename);
- return(buf);
- }
-
-
-
-
- yes() {
- char buf[BUFSIZ];
- char *val;
-
- val = fgets(buf, BUFSIZ, stdin);
- if (! val) {
- printf("\n");
- exit(1);
- }
- if (! index(buf, '\n')) do
- fgets(buf + 1, BUFSIZ - 1, stdin);
- while (! index(buf + 1, '\n'));
- return(*buf == 'y');
- }
-
-
-
-
- char *lastpart(filename)
- char *filename;
- {
- char *part;
-
- part = rindex(filename, '/');
-
- if (! part)
- part = filename;
- else if (part == filename)
- part++;
- else if (part - filename + 1 == strlen(filename)) {
- part = rindex(--part, '/');
- if (! part)
- part = filename;
- else
- part++;
- }
- else
- part++;
-
- return(part);
- }
-
-
-
-
- char *firstpart(filename, rest)
- char *filename;
- char *rest; /* RETURN */
- {
- char *part;
- static char buf[MAXPATHLEN];
-
- strcpy(buf, filename);
- part = index(buf, '/');
- if (! part) {
- *rest = '\0';
- return(buf);
- }
- strcpy(rest, part + 1);
- *part = '\0';
- return(buf);
- }
-
-
-
-
- char *reg_firstpart(filename, rest)
- char *filename;
- char *rest; /* RETURN */
- {
- static char first[MAXNAMLEN];
-
- sprintf(first, "^%s$", firstpart(filename, rest));
- return(first);
- }
-
-
-
-
-
-
- get_home(buf)
- char *buf;
- {
- char *user;
- struct passwd *psw;
-
- strcpy(buf, getenv("HOME"));
-
- if (*buf)
- return(0);
-
- user = getenv("USER");
- psw = getpwnam(user);
-
- if (psw) {
- strcpy(buf, psw->pw_dir);
- return(0);
- }
-
- psw = getpwuid(getuid());
-
- if (psw) {
- strcpy(buf, psw->pw_dir);
- return(0);
- }
- return(1);
- }
-
-
-
-
- timed_out(file_ent, current_time, min_days)
- filerec *file_ent;
- int current_time, min_days;
- {
- if ((current_time - file_ent->specs.st_mtime) / 86400 >= min_days)
- return(1);
- else
- return(0);
- }
-
-
-
- int directory_exists(dirname)
- char *dirname;
- {
- struct stat stat_buf;
-
- if (stat(dirname, &stat_buf))
- return(0);
- else if ((stat_buf.st_mode & S_IFMT) == S_IFDIR)
- return(1);
- else
- return(0);
- }
-
-
-