From: Pierre Habouzit <madcoder@debian.org>
Date: Sat, 2 Dec 2006 19:53:47 +0000 (+0100)
Subject: add m_strpad to the string functions.
X-Git-Url: http://git.madism.org/?a=commitdiff_plain;h=2387528e4153c90f6e4b7e1bb7dba2fd09b1943c;p=apps%2Fmadmutt.git

add m_strpad to the string functions.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
---

diff --git a/lib-lib/str.h b/lib-lib/str.h
index 882a103..fd80950 100644
--- a/lib-lib/str.h
+++ b/lib-lib/str.h
@@ -301,6 +301,25 @@ static inline ssize_t m_strputc(char *dst, ssize_t n, int c) {
     return 1;
 }
 
+/** \brief Sets a portion of a string to a defined character, à la memset.
+ *
+ * \param[in]  dst  pointer to the buffer.
+ * \param[in]  n    size of that buffer, (negative values allowed).
+ * \param[in]  c    the char to use in the padding.
+ * \param[in]  len  length of the padding.
+ * \return MAX(0, len).
+ */
+__attribute__((nonnull(1)))
+static inline ssize_t m_strpad(char *dst, ssize_t n, int c, ssize_t len)
+{
+    ssize_t dlen = MIN(n - 1, len);
+    if (dlen > 0) {
+        memset(dst, c, dlen);
+        dst[dlen] = '\0';
+    }
+    return MAX(0, len);
+}
+
 ssize_t m_strcpy(char *dst, ssize_t n, const char *src)
     __attribute__((nonnull(1)));