Changeset 22736 in vbox for trunk/src/VBox/Runtime/common

Timestamp:

Sep 3, 2009 11:32:59 AM (15 years ago)

Author:

vboxsync

Message:

IPRT: Added RTStrDupN.

File:

• trunk/src/VBox/Runtime/common/string/string.cpp (modified) (3 diffs)

trunk/src/VBox/Runtime/common/string/string.cpp

@@ -65 +65 @@
 RTDECL(char *) RTStrDup(const char *pszString)
 {
-    Assert(VALID_PTR(pszString));
+    AssertPtr(pszString);
     size_t cch = strlen(pszString) + 1;
     char *psz = (char *)RTMemAlloc(cch);
@@ -85 +85 @@
 RTDECL(int)  RTStrDupEx(char **ppszString, const char *pszString)
 {
-    Assert(VALID_PTR(ppszString));
-    Assert(VALID_PTR(pszString));
+    AssertPtr(ppszString);
+    AssertPtr(pszString);
 
     size_t cch = strlen(pszString) + 1;
@@ -100 +100 @@
 RT_EXPORT_SYMBOL(RTStrDupEx);
 
+
+/**
+ * Allocates a new copy of the given UTF-8 substring.
+ *
+ * @returns Pointer to the allocated UTF-8 substring.
+ * @param   pszString       UTF-8 string to duplicate.
+ * @param   cchMax          The max number of chars to duplicate, not counting
+ *                          the terminator.
+ */
+RTDECL(char *) RTStrDupN(const char *pszString, size_t cchMax)
+{
+    AssertPtr(pszString);
+    char  *pszEnd = (char *)memchr(pszString, '\0', cchMax);
+    size_t cch    = pszEnd ? (uintptr_t)pszEnd - (uintptr_t)pszString : cchMax;
+    char  *pszDst = (char *)RTMemAlloc(cch);
+    if (pszDst)
+    {
+        memcpy(pszDst, pszString, cch);
+        pszDst[cch] = '\0';
+    }
+    return pszDst;
+}
+RT_EXPORT_SYMBOL(RTStrDupN);
+
+
+