fix ls segfault

2 files changed, 28 insertions, 0 deletions

diff --git a/src/util/shared.c b/src/util/shared.c
index 3e6fca3..600a967 100644
--- a/src/util/shared.c
+++ b/src/util/shared.c
@@ -1,6 +1,7 @@
 #include "shared.h"
 
 #include <errno.h>
+#include <limits.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -232,3 +233,25 @@ FILE* get_tty_stream(char* type) {
     return file;
 }
 
+static char path_buffer[PATH_MAX + 1];
+static int path_buffer_index = 0;
+
+char* get_path_buffer() {
+    return path_buffer;
+}
+
+int push_path_buffer(const char* string) {
+    int save = path_buffer_index;
+    if (path_buffer_index > 1 || (path_buffer_index == 1 && path_buffer[0] != '/')) {
+        path_buffer[path_buffer_index++] = '/';
+    }
+    int string_len = strlen(string);
+    memcpy(path_buffer + path_buffer_index, string, string_len + 1);
+    path_buffer_index += string_len;
+    return save;
+}
+
+void pop_path_buffer(int i) {
+    path_buffer_index = i;
+    path_buffer[path_buffer_index] = '\0';
+}
diff --git a/src/util/shared.h b/src/util/shared.h
index c0945c1..9bade52 100644
--- a/src/util/shared.h
+++ b/src/util/shared.h
@@ -57,3 +57,8 @@ int parse_args (int argc, char** argv, void (*help)(void), int (*short_arg)(char
 
 int get_tty();
 FILE* get_tty_stream(char* type);
+
+char* get_path_buffer();
+int push_path_buffer(const char* string);
+void pop_path_buffer(int i);
+