Rewrite of write_stream_list(), and writing packed resources

[wimlib] / include / wimlib / util.h

diff --git a/include/wimlib/util.h b/include/wimlib/util.h
index 329368384cc26d76b516793244cd6c9fcaad64d5..8e9d695ed090a1cbd35ad75e37da425be7663a7b 100644 (file)
--- a/include/wimlib/util.h
+++ b/include/wimlib/util.h
@@ -49,6 +49,10 @@
 
 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
 
+/* Maximum number of array elements to allocate on the stack (used in various
+ * places when large temporary buffers are needed).  */
+#define STACK_MAX 32768
+
 #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR
 extern void *
 wimlib_malloc(size_t) _malloc_attribute;
@@ -90,6 +94,11 @@ wimlib_strdup(const char *str) _malloc_attribute;
 extern void *
 memdup(const void *mem, size_t size) _malloc_attribute;
 
+#ifndef HAVE_MEMPCPY
+extern void *
+mempcpy(void *dst, const void *src, size_t n);
+#endif
+
 /* util.c */
 extern void
 randomize_byte_array(u8 *p, size_t n);
@@ -116,16 +125,51 @@ bsr32(u32 n)
 #endif
 }
 
+static inline bool
+is_power_of_2(unsigned long n)
+{
+       return (n != 0 && (n & (n - 1)) == 0);
+
+}
+
 static inline u64
 hash_u64(u64 n)
 {
        return n * 0x9e37fffffffc0001ULL;
 }
 
+static inline int
+cmp_u64(u64 n1, u64 n2)
+{
+       if (n1 < n2)
+               return -1;
+       else if (n1 > n2)
+               return 1;
+       else
+               return 0;
+}
+
+/* is_any_path_separator() - characters treated as path separators in WIM path
+ * specifications and capture configuration files (the former will be translated
+ * to WIM_PATH_SEPARATOR; the latter will be translated to
+ * OS_PREFERRED_PATH_SEPARATOR)
+ *
+ * OS_PREFERRED_PATH_SEPARATOR - preferred (or only) path separator on the
+ * operating system.  Used when constructing filesystem paths to extract or
+ * archive.
+ *
+ * WIM_PATH_SEPARATOR - character treated as path separator for WIM paths.
+ * Currently needs to be '/' on UNIX for the WIM mounting code to work properly.
+ */
+
 #ifdef __WIN32__
 #  define OS_PREFERRED_PATH_SEPARATOR L'\\'
+#  define is_any_path_separator(c) ((c) == L'/' || (c) == L'\\')
 #else
 #  define OS_PREFERRED_PATH_SEPARATOR '/'
+#  define is_any_path_separator(c) ((c) == '/' || (c) == '\\')
 #endif
 
+#define WIM_PATH_SEPARATOR WIMLIB_WIM_PATH_SEPARATOR
+
 #endif /* _WIMLIB_UTIL_H */