From bc11640fdf880e369d66cb36dd728c4e4a5cc663 Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Thu, 16 Nov 2006 11:23:56 +0000
Subject: [PATCH]   * Implemented strcmp() and strdup() and added an fflush()
 stub to the     kernel code.

---
 kernel/kernel.c | 28 ++++++++++++++++++++++++++++
 kernel/kernel.h |  3 +++
 2 files changed, 31 insertions(+)

diff --git a/kernel/kernel.c b/kernel/kernel.c
index 0eee987..e737ff3 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -164,6 +164,17 @@ size_t strlen(const char *s)
     return len;
 }
 
+int strcmp(const char *s1, const char *s2)
+{
+    while(*s1 && *s1 == *s2)
+    {
+        s1++;
+        s2++;
+    }
+
+    return (int)*s1 - (int)*s2;
+}
+
 int strcasecmp(const char *s1, const char *s2)
 {
     while(*s1 && *s2 && UPPER(*s1) == UPPER(*s2))
@@ -189,6 +200,17 @@ int memcmp(const void *_s1, const void *_s2, size_t n)
     return 0;
 }
 
+char *strdup(const char *s)
+{
+    char *new;
+    unsigned int len = strlen(s);
+
+    new = malloc(len + 1);
+    memcpy(new, s, len + 1);
+
+    return new;
+}
+
 /* stdarg.h functions */
 int vsnprintf(char *str, size_t size, const char *format, va_list ap)
 {
@@ -238,6 +260,12 @@ int fprintf(FILE *stream, const char *format, ...)
     return 0;
 }
 
+int fflush(FILE *stream)
+{
+    /* FIXME */
+    return 0;
+}
+
 int sprintf(char *str, const char *format, ...)
 {
     /* FIXME */
diff --git a/kernel/kernel.h b/kernel/kernel.h
index c282395..2a92fc7 100644
--- a/kernel/kernel.h
+++ b/kernel/kernel.h
@@ -82,8 +82,10 @@ FILE *stdin, *stdout, *stderr;
 void *memset(void *s, int c, size_t n);
 void *memcpy(void *dest, const void *src, size_t n);
 size_t strlen(const char *s);
+int strcmp(const char *s1, const char *s2);
 int strcasecmp(const char *s1, const char *s2);
 int memcmp(const void *s1, const void *s2, size_t n);
+char *strdup(const char *s);
 
 /* stdarg.h functions */
 typedef void * va_list;
@@ -99,6 +101,7 @@ size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);
 int fclose(FILE *fp);
 int printf(const char *format, ...);
 int fprintf(FILE *stream, const char *format, ...);
+int fflush(FILE *stream);
 int sprintf(char *str, const char *format, ...);
 int sscanf(const char *str, const char *format, ...);