1 files changed, 40 insertions, 0 deletions
diff --git a/gnu/usr.bin/cvs/lib/strstr.c b/gnu/usr.bin/cvs/lib/strstr.c
new file mode 100644
index 00000000000..e43bca0b4e8
--- /dev/null
+++ b/gnu/usr.bin/cvs/lib/strstr.c
@@ -0,0 +1,40 @@
+/******************************************************************************
+*                                                                             *
+*   s t r s t r                                                               *
+*                                                                             *
+*   Find the first occurrence of a string in another string.                  *
+*                                                                             *
+* Format:                                                                     *
+*             return = strstr(Source,What);                                   *
+*                                                                             *
+* Parameters:                                                                 *
+*                                                                             *
+* Returns:                                                                    *
+*                                                                             *
+* Scope:      PUBLIC                                                          *
+*                                                                             *
+******************************************************************************/
+
+char *strstr(Source, What)
+register const char *Source;
+register const char *What;
+{
+register char WhatChar;
+register char SourceChar;
+register long Length;
+
+
+    if ((WhatChar = *What++) != 0) {
+        Length = strlen(What);
+        do {
+            do {
+                if ((SourceChar = *Source++) == 0) {
+                    return (0);
+                }
+            } while (SourceChar != WhatChar);
+        } while (strncmp(Source, What, Length) != 0);
+        Source--;
+    }
+    return ((char *)Source);
+
+}/*strstr*/