migrate to gitlab

1 files changed, 116 insertions, 0 deletions

diff --git a/strings.c b/strings.c
new file mode 100644
index 0000000..bc2f4a3
--- /dev/null
+++ b/strings.c
@@ -0,0 +1,116 @@
+/*
+ * UNG's Not GNU
+ * 
+ * Copyright (c) 2011, Jakob Kaivo <jakob@kaivo.net>
+ * 
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <getopt.h>
+
+const char *strings_desc = "find printable strings in files";
+const char *strings_inv  = "strings [-a] [-t format] -[n number] [file...]";
+
+static int strings (FILE *f, int number, char format)
+{
+  char buf[BUFSIZ];
+  char tbuf[BUFSIZ];
+  int nread;
+  int offset = 0;
+  int i;
+  int count = 0;
+
+  while (!feof (f)) {
+    nread = fread (buf, sizeof(char), BUFSIZ, f);
+    for (i = 0; i < nread; i++) {
+      if (buf[i] == '\0' || buf[i] == '\n') {
+        if (count >= number) {
+          switch (format) {
+            case 'd':
+              printf ("%d ", offset - count);
+              break;
+            case 'o':
+              printf ("%o ", offset - count);
+              break;
+            case 'x':
+              printf ("%x ", offset - count);
+              break;
+            default:
+              break;
+          }
+          fwrite (tbuf, sizeof(char), count, stdout);
+          putchar ('\n');
+        }
+        count = 0;
+      } else if (isprint(buf[i])) {
+        tbuf[count] = buf[i];
+        count++;
+      } else {
+        count = 0;
+      }
+      offset++;
+    }
+  }
+  return 0;
+}
+
+int
+main(int argc, char **argv)
+{
+  int c;
+  int number = 4;
+  char format = 0;
+  char *end;
+
+  while ((c = getopt (argc, argv, ":an:t:")) != -1) {
+    switch (c) {
+      case 'a':
+        // Always scan the entire file
+        break;
+      case 'n':
+        number = strtol (optarg, &end, 10);
+        if (end != NULL && strlen (end) > 0)
+          return 1;
+        break;
+      case 't':
+        if (strlen(optarg) != 1)
+          return 1;
+        format = optarg[0];
+        break;
+      default:
+        return 1;
+    }
+  }
+
+  if ((format != 0 && format != 'd' && format != 'o' && format != 'x')
+      || number < 1)
+    return 1;
+
+  if (optind >= argc) {
+    strings (stdin, number, format);
+  }
+
+  while (optind < argc) {
+    FILE *f = fopen (argv[optind], "r");
+    strings (f, number, format);
+    fclose (f);
+    optind++;
+  }
+
+  return 0;
+}