From de0eef861083d56d1d9d1e34fa5a5eb6893669cf Mon Sep 17 00:00:00 2001
From: discomfitor <discomfitor>
Date: Sun, 18 Jul 2010 07:39:21 +0000
Subject: [PATCH] +eina_stringshare_replace_length to replace a stringshared
 string with a given length of another string

git-svn-id: http://svn.enlightenment.org/svn/e/trunk/eina@50320 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33
---
 src/include/eina_inline_stringshare.x | 33 +++++++++++++++++++++++++++++++--
 src/include/eina_stringshare.h        |  1 +
 src/lib/eina_stringshare.c            |  2 +-
 3 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/src/include/eina_inline_stringshare.x b/src/include/eina_inline_stringshare.x
index 233df99..438218b 100644
--- a/src/include/eina_inline_stringshare.x
+++ b/src/include/eina_inline_stringshare.x
@@ -26,11 +26,11 @@
  */
 
 /**
- * Replace the previously stringshared pointer with a new content.
+ * Replace the previously stringshared pointer with new content.
  *
  * The string pointed by @a p_str should be previously stringshared or
  * @c NULL and it will be eina_stringshare_del(). The new string will
- * be eina_stringshare_add() and then assigned to @c *p_str.
+ * be passed to eina_stringshare_add() and then assigned to @c *p_str.
  *
  * @param p_str pointer to the stringhare to be replaced. Must not be
  *        @c NULL, but @c *p_str may be @c NULL as it is a valid
@@ -54,6 +54,35 @@ eina_stringshare_replace(const char **p_str, const char *news)
 }
 
 /**
+ * Replace the previously stringshared pointer with a new content.
+ *
+ * The string pointed by @a p_str should be previously stringshared or
+ * @c NULL and it will be eina_stringshare_del(). The new string will
+ * be passed to eina_stringshare_add_length() and then assigned to @c *p_str.
+ *
+ * @param p_str pointer to the stringhare to be replaced. Must not be
+ *        @c NULL, but @c *p_str may be @c NULL as it is a valid
+ *        stringshare handle.
+ * @param news new string to be stringshared, may be @c NULL.
+ * @param slen The string size (<= strlen(str)).
+ *
+ * @return #EINA_TRUE if the strings were different and thus replaced,
+ *         #EINA_FALSE if the strings were the same after shared.
+ */
+static inline Eina_Bool
+eina_stringshare_replace_length(const char **p_str, const char *news, unsigned int slen)
+{
+   if (*p_str == news) return EINA_FALSE;
+
+   news = eina_stringshare_add_length(news, slen);
+   eina_stringshare_del(*p_str);
+   if (*p_str == news)
+     return EINA_FALSE;
+   *p_str = news;
+   return EINA_TRUE;
+}
+
+/**
  * @}
  */
 
diff --git a/src/include/eina_stringshare.h b/src/include/eina_stringshare.h
index 94c61e6..72b9a1b 100644
--- a/src/include/eina_stringshare.h
+++ b/src/include/eina_stringshare.h
@@ -73,6 +73,7 @@ EAPI int eina_stringshare_strlen(const char *str) EINA_CONST EINA_WARN_UNUSED_RE
 EAPI void eina_stringshare_dump(void);
 
 static inline Eina_Bool eina_stringshare_replace(const char **p_str, const char *news) EINA_ARG_NONNULL(1);
+static inline Eina_Bool eina_stringshare_replace_length(const char **p_str, const char *news, unsigned int slen) EINA_ARG_NONNULL(1);
 
 #include "eina_inline_stringshare.x"
 
diff --git a/src/lib/eina_stringshare.c b/src/lib/eina_stringshare.c
index a4dd5e5..939c199 100644
--- a/src/lib/eina_stringshare.c
+++ b/src/lib/eina_stringshare.c
@@ -1101,7 +1101,7 @@ eina_stringshare_threads_shutdown(void)
  * it is added to the strings to be searched and a duplicated string
  * of @p str is returned.
  *
- * This function does not check string size, but uses the give the
+ * This function does not check string size, but uses the
  * exact given size. This can be used to stringshare part of a larger
  * buffer or substring.
  *
-- 
2.7.4