Issue #53 on Solve , and working for #23

arch/i386/init/main.c

@@ -83,6 +83,9 @@ void kernelMain(multiboot_info_t* multiboot_structure,uint32_t magicnumber)
    sti();
 
    video_drivers[VGA_VIDEO_DRIVER_INDEX]->clear();
+    char *s = "kkekerkernkernelernelrnelnelell";
+    str_t ss = strstr(s, "kernel");
+    printk("HERE:%s",ss.str);
    init_terminal();
 
    while(1)

include/libc/string/str_t.h

@@ -0,0 +1,10 @@
+#ifndef _STRING_STR_T_
+#define _STRING_STR_T_
+
+typedef 
+struct
+{
+	char str[200];
+}str_t;
+
+#endif /*_STRING_STR_T_*/

include/libc/string/string.h

@@ -7,6 +7,7 @@
 #include "strlen/strlen.h"
 #include "strcat/strcat.h"
 #include "strcmp/strcmp.h"
+#include "strstr/strstr.h"
 #include "eat_front_whitespace/eat_front_whitespace.h"
 #include "validate_char/validate_char.h"
 #include "memmove/memmove.h"

include/libc/string/strstr/strstr.h

@@ -0,0 +1,8 @@
+#ifndef _LIBC_STRING_STRSTR_H_
+#define _LIBC_STRING_STRSTR_H_
+
+#include <str_t.h>
+
+extern str_t strstr(char* __str, char* __substr);
+
+#endif /*_LIBC_STRING_STRSTR_H_*/

include/libc/unistd/get_opt/get_opt.h

@@ -1,11 +1,7 @@
 #ifndef _LIBC_UNISTD_GETOPT_H_
 #define _LIBC_UNISTD_GETOPT_H_
 
-typedef 
-struct
-{
-	char str[200];
-}str_t;
+#include <str_t.h>
 
 
 extern void get_opt(const char* s, str_t str_p[]);

libc/Makefile

@@ -11,6 +11,7 @@ CSRCS = \
 	string/memmove/memmove.c \
 	string/eat_front_whitespace/eat_front_whitespace.c \
 	string/validate_char/validate_char.c \
+	string/strstr/strstr.c \
 	stdio/printck/printck.c \
 	stdlib/itoa/itoa.c \
 	stdlib/atoi/atoi.c \

libc/string/strstr/strstr.c

@@ -0,0 +1,84 @@
+/**
+ ** This file is part of BoneOS.
+ **
+ **   BoneOS is free software: you can redistribute it and/or modify
+ **   it under the terms of the GNU General Public License as published by
+ **   the Free Software Foundation, either version 3 of the License, or
+ **   (at your option) any later version.
+
+ **   BoneOS is distributed in the hope that it will be useful,
+ **   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **   GNU General Public License for more details.
+
+ **   You should have received a copy of the GNU General Public License
+ **   along with BoneOS.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ **  @main_author : Amanuel Bogale
+ **  
+ **  @contributors:
+
+ **     Amanuel Bogale <amanuel2> : start
+ **/  
+
+/*
+ * @function strstr:
+ *    Returns substring + rest of
+ *    string , from the string.
+ *
+ *        @param __str (char*):
+ *           Specified string
+ *           to find substring from.
+ *      
+ *        @param __substr (char*):
+ *           the Substring to be searched 
+ *           for.
+
+ *        @return (str_t):
+ *           Returns the substring + rest
+ *           of string.
+ */
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <strstr/strstr.h>
+#include <strlen/strlen.h>
+#include <strcmp/strcmp.h>
+
+str_t strstr(char* __str, char* __substr)
+{
+    size_t strlen__substr = strlen(__substr);
+    size_t strlen__str = strlen(__str);
+    char __temp[strlen__substr];
+    str_t __return_str;
+    int __start_index=0;
+    bool __found=false;
+
+    int index=0;
+    while(__str[index])
+    {
+        if(__str[index] == __substr[0])
+        {
+            int i=0;
+            for(; __substr[i]; i++)
+                __temp[i] = __str[i+index];
+
+            if(strcmp(__temp,__substr)==0)
+            {
+                __start_index = (i+index)-strlen__substr;
+                __found=true;
+                for(uint32_t i=__start_index,j=0; i<strlen__str;i++,j++)
+                    __return_str.str[j]=__str[i];
+            }
+            index++;
+        }
+        else
+            index++;
+    }
+
+    if(__found==false)
+        __return_str.str[0] = 0;
+    return __return_str;
+}
+