Remove para_dirname() and para_basename().

[paraslash.git] / string.c

diff --git a/string.c b/string.c
index 5eb1606e59ef546d6a7a55ce36b509a29c2dae18..f80331900de09fccf573c18666c3fa007f8ca6bf 100644 (file)
--- a/string.c
+++ b/string.c
@@ -1,8 +1,4 @@
-/*
- * Copyright (C) 2004 Andre Noll <maan@tuebingen.mpg.de>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2004 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
 
 /** \file string.c Memory allocation and string handling functions. */
 
@@ -10,7 +6,6 @@
 
 #include <pwd.h>
 #include <sys/utsname.h> /* uname() */
-#include <string.h>
 #include <regex.h>
 #include <langinfo.h>
 #include <wchar.h>
@@ -118,9 +113,9 @@ __must_check __malloc char *para_strdup(const char *s)
 }
 
 /**
- * Print a formated message to a dynamically allocated string.
+ * Print a formatted message to a dynamically allocated string.
  *
- * \param result The formated string is returned here.
+ * \param result The formatted string is returned here.
  * \param fmt The format string.
  * \param ap Initialized list of arguments.
  *
@@ -204,17 +199,22 @@ __must_check __printf_1_2 __malloc char *make_message(const char *fmt, ...)
 }
 
 /**
- * Free the content of a pointer and set it to \p NULL.
+ * Free the content of a pointer and set it to NULL.
  *
- * This is equivalent to "free(*arg); *arg = NULL;".
+ * \param arg A pointer to the pointer whose content should be freed.
  *
- * \param arg The pointer whose content should be freed.
+ * If arg is NULL, the function returns immediately. Otherwise it frees the
+ * memory pointed to by *arg and sets *arg to NULL. Hence callers have to pass
+ * the *address* of the pointer variable that points to the memory which should
+ * be freed.
  */
 void freep(void *arg)
 {
-       void **ptr = (void **)arg;
-       free(*ptr);
-       *ptr = NULL;
+       if (arg) {
+               void **ptr = arg;
+               free(*ptr);
+               *ptr = NULL;
+       }
 }
 
 /**
@@ -245,56 +245,6 @@ __must_check __malloc char *para_strcat(char *a, const char *b)
        return tmp;
 }
 
-/**
- * Paraslash's version of dirname().
- *
- * \param name Pointer to the full path.
- *
- * Compute the directory component of \p name.
- *
- * \return If \a name is \p NULL or the empty string, return \p NULL.
- * Otherwise, Make a copy of \a name and return its directory component. Caller
- * is responsible to free the result.
- */
-__must_check __malloc char *para_dirname(const char *name)
-{
-       char *p, *ret;
-
-       if (!name || !*name)
-               return NULL;
-       ret = para_strdup(name);
-       p = strrchr(ret, '/');
-       if (!p)
-               *ret = '\0';
-       else
-               *p = '\0';
-       return ret;
-}
-
-/**
- * Paraslash's version of basename().
- *
- * \param name Pointer to the full path.
- *
- * Compute the filename component of \a name.
- *
- * \return \p NULL if (a) \a name is the empty string or \p NULL, or (b) name
- * ends with a slash.  Otherwise, a pointer within \a name is returned.  Caller
- * must not free the result.
- */
-__must_check char *para_basename(const char *name)
-{
-       char *ret;
-
-       if (!name || !*name)
-               return NULL;
-       ret = strrchr(name, '/');
-       if (!ret)
-               return (char *)name;
-       ret++;
-       return ret;
-}
-
 /**
  * Get the logname of the current user.
  *