1 files changed, 55 insertions, 0 deletions
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..620cc41
--- /dev/null
+++ b/main.c
@@ -0,0 +1,55 @@
+#include "cat.h"
+
+/* Main function */
+int main(int argc, const char *argv[]) {
+    int exv, i;
+    void *buf;
+
+    /* Exit value begins by assuming success */
+    exv = EXIT_SUCCESS;
+
+    /* Allocate a buffer with the prescribed size, or bail out */
+    if ((buf = malloc(BUFLEN)) == NULL) {
+        perror(__FUNCTION__);
+        exit(EXIT_FAILURE);
+    }
+
+    /* If there's at least one argument, we'll attempt to read from all the
+     * files named; if one of them doesn't work, we'll flag an error but will
+     * proceed */
+    if (argc > 1) {
+
+        /* Note we start at i = 1, not i = 0; the first element of argv is the
+         * command itself, not like in Perl */
+        for (i = 1 ; i < argc ; i++) {
+
+            /* If the filename is the special case of -, we emit stdin */
+            if (strncmp(argv[i], "-", 1) == 0) {
+                if (cfd(0, buf) == -1) {
+                    exv = EXIT_FAILURE;
+                }
+
+            /* Otherwise, we emit the file by name */
+            } else {
+                if (cfn(argv[i], buf) == -1) {
+                    exv = EXIT_FAILURE;
+                }
+            }
+        }
+
+    /* If there were no arguments, we assume the user wants us to read from
+     * stdin, which should already be opened */
+    } else {
+        if (cfd(0, buf) == -1) {
+            exv = EXIT_FAILURE;
+        }
+    }
+
+    /* Free the allocated buffer */
+    free(buf);
+    buf = NULL;
+
+    /* Done, exit appropriately */
+    exit(exv);
+}
+