1 files changed, 85 insertions, 0 deletions

diff --git a/stest.c b/stest.c
new file mode 100644
index 0000000..a5596ea
--- /dev/null
+++ b/stest.c
@@ -0,0 +1,85 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#define OPER(x)  (oper[(x)-'a'])
+
+static bool test(const char *);
+
+static bool quiet = false;
+static bool oper[26];
+static struct stat old, new;
+
+int
+main(int argc, char *argv[]) {
+        char buf[BUFSIZ], *p;
+        bool match = false;
+        int opt;
+
+        while((opt = getopt(argc, argv, "C:bcdefghn:o:pqrsuwx")) != -1)
+                switch(opt) {
+                case 'C': /* tests relative to directory */
+                        if(chdir(optarg) == -1) {
+                                perror(optarg);
+                                exit(2);
+                        }
+                        break;
+                case 'n': /* newer than file */
+                case 'o': /* older than file */
+                        if(!(OPER(opt) = stat(optarg, (opt == 'n' ? &new : &old)) == 0))
+                                perror(optarg);
+                        break;
+                case 'q': /* quiet (no output, just status) */
+                        quiet = true;
+                        break;
+                default:  /* miscellaneous operators */
+                        OPER(opt) = true;
+                        break;
+                case '?': /* error: unknown flag */
+                        fprintf(stderr, "usage: %s [-bcdefghpqrsuwx] [-C dir] [-n file] [-o file] [file...]\n", argv[0]);
+                        exit(2);
+                }
+        if(optind == argc)
+                while(fgets(buf, sizeof buf, stdin)) {
+                        if(*(p = &buf[strlen(buf)-1]) == '\n')
+                                *p = '\0';
+                        match |= test(buf);
+                }
+        else
+                while(optind < argc)
+                        match |= test(argv[optind++]);
+
+        return match ? 0 : 1;
+}
+
+bool
+test(const char *path) {
+        struct stat st;
+
+        if((!OPER('b') || (stat(path, &st) == 0 && S_ISBLK(st.st_mode)))        /* block special     */
+        && (!OPER('c') || (stat(path, &st) == 0 && S_ISCHR(st.st_mode)))        /* character special */
+        && (!OPER('d') || (stat(path, &st) == 0 && S_ISDIR(st.st_mode)))        /* directory         */
+        && (!OPER('e') || (access(path, F_OK) == 0))                            /* exists            */
+        && (!OPER('f') || (stat(path, &st) == 0 && S_ISREG(st.st_mode)))        /* regular file      */
+        && (!OPER('g') || (stat(path, &st) == 0 && (st.st_mode & S_ISGID)))     /* set-group-id flag */
+        && (!OPER('h') || (lstat(path, &st) == 0 && S_ISLNK(st.st_mode)))       /* symbolic link     */
+        && (!OPER('n') || (stat(path, &st) == 0 && st.st_mtime > new.st_mtime)) /* newer than file   */
+        && (!OPER('o') || (stat(path, &st) == 0 && st.st_mtime < old.st_mtime)) /* older than file   */
+        && (!OPER('p') || (stat(path, &st) == 0 && S_ISFIFO(st.st_mode)))       /* named pipe        */
+        && (!OPER('r') || (access(path, R_OK) == 0))                            /* readable          */
+        && (!OPER('s') || (stat(path, &st) == 0 && st.st_size > 0))             /* not empty         */
+        && (!OPER('u') || (stat(path, &st) == 0 && (st.st_mode & S_ISUID)))     /* set-user-id flag  */
+        && (!OPER('w') || (access(path, W_OK) == 0))                            /* writable          */
+        && (!OPER('x') || (access(path, X_OK) == 0))) {                         /* executable        */
+                if(quiet)
+                        exit(0);
+                puts(path);
+                return true;
+        }
+        else
+                return false;
+}