1 files changed, 67 insertions, 0 deletions
diff --git a/rm.c b/rm.c
new file mode 100644
index 0000000..e2c1dfc
--- /dev/null
+++ b/rm.c
@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+/* TODO make a recursive flag */
+
+int rm(char *fn, int frc, int ask, int expAsk);
+
+int
+rm(char *fn, int frc, int ask, int prompt)
+{
+  FILE *f;
+  int sz;
+  char yn;
+
+  /* get length of fn and check if it exists */
+  if ((f = fopen(fn, "r"))) {
+    fseek(f, 0L, SEEK_END);
+    sz = ftell(f);
+  } else {
+    fprintf(stderr, "fn '%s' doesn't exist!\n", fn);
+    return 1;
+  }
+
+  /* confirm deletion(s) when ask is on, and size is over 0 */
+  if (prompt && !frc || (ask && sz > 0)) {
+    printf("Do you want to delete %s? ", fn);
+    yn = getchar();
+
+    if (yn == 'y')
+      remove(fn);
+  } else
+    remove(fn);
+
+  return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+  int ask = 1; /* confirm deletion */
+  int prompt = 0; /* explicitly confirm deletion */
+  int frc = 0; /* force deletion */
+  int c;
+
+	while ((c = getopt(argc, argv, "efh")) != -1) {
+    switch (c) {
+      case 'i': prompt = 1; break;
+      case 'f': frc = 1; ask = 0; break;
+      case 'h': goto usage; break;
+      default: printf("run %s -h for help\n", argv[0]); return 1; break;
+    }
+	}
+
+  /* for each argument */
+  for (int i = 1; i < argc; i++) {
+    if (strncmp(argv[i], "-", 1) == 0) /* ignore args that start with - */
+      i++;
+    rm(argv[i], frc, ask, prompt);
+  }
+
+  return 0;
+
+usage:
+  printf("Usage: %s -option(s) file(s)\n", argv[0]);
+  printf("\n\t-i prompt user for deletion of every file\n\t-f force deletion, does not ask for confirmation\n\t-h shows this help message\n");
+}