SpiderScript! (with a sample script)

[tpg/acess2.git] / Usermode / Libraries / libc.so_src / string.c

diff --git a/Usermode/Libraries/libc.so_src/string.c b/Usermode/Libraries/libc.so_src/string.c
index 98692b2..4e8dfe2 100644 (file)
--- a/Usermode/Libraries/libc.so_src/string.c
+++ b/Usermode/Libraries/libc.so_src/string.c
@@ -19,6 +19,19 @@ EXPORT int strcmp(const char *s1, const char *s2)
        return (int)*s1 - (int)*s2;
 }
 
+/**
+ * \fn EXPORT int strncmp(const char *s1, const char *s2)
+ * \brief Compare two strings
+ */
+EXPORT int strncmp(const char *s1, const char *s2, size_t n)
+{
+       if( n == 0 )    return 0;
+       while(n -- && *s1 == *s2 && *s1 != '\0' && *s2 != '\0') {
+               s1++; s2++;
+       }
+       return (int)*s1 - (int)*s2;
+}
+
 /**
  * \fn EXPORT char *strcpy(char *dst, const char *src)
  * \brief Copy a string to another
@@ -101,6 +114,24 @@ EXPORT char *strdup(const char *str)
        return ret;
 }
 
+/**
+ * \fn EXPORT char *strndup(const char *str, size_t maxlen)
+ * \brief Duplicate a string into the heap with a maximum length
+ * \param str  Input string buffer
+ * \param maxlen       Maximum valid size of the \a str buffer
+ * \return Heap string with the same value of \a str
+ */
+EXPORT char *strndup(const char *str, size_t maxlen)
+{
+       size_t  len;
+       char    *ret;
+       for( len = 0; len < maxlen && str[len]; len ++) ;
+       ret = malloc( len + 1);
+       memcpy( ret, str, len );
+       ret[len] = '\0';
+       return ret;
+}
+
 /**
  * \fn EXPORT char *strchr(char *str, int character)
  * \brief Locate a character in a string