base64.obj src added

git-svn-id: svn://kolibrios.org@2331 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/develop/libraries/base64/base64.c

@@ -0,0 +1,123 @@
+
+#include "base64.h"
+
+///===============
+
+char base64_table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
+
+///===============
+
+char* strchr (const char *s, int c)
+{
+  do {
+    if (*s == c)
+      {
+        return (char*)s;
+      }
+  } while (*s++);
+  return (0);
+}
+
+///===============
+
+int base64_encode(char inp[], char outp[], int len)
+{
+int i, j;
+unsigned char chr[3];
+
+for (i = 0, j=-1; i < len; i+=3)
+	{
+	chr[0] = (unsigned char) inp[i];
+	if (i < len)
+		{
+		chr[1] = (unsigned char) inp[i+1];
+		chr[2] = (unsigned char) inp[i+2];
+		}
+
+	outp[++j] = base64_table[ chr[0]>>2 ];
+	outp[++j] = base64_table[ ((chr[0] & 3) << 4) | (chr[1] >> 4) ];
+
+	outp[++j] = base64_table[ ((chr[1] & 15) << 2) | (chr[2] >> 6) ];
+	outp[++j] = base64_table[ chr[2] & 63 ];
+	}
+
+switch (len%3)
+    {
+    case 1:
+            outp[j-1] = outp[j] = '=';
+            break;
+
+    case 2:
+            outp[j] = '=';
+            break;
+
+    default:
+        break;
+
+    };
+
+outp[j+1] = '\0';
+
+return j+1;
+}
+
+///===============
+
+int base64_decode(char inp[], char outp[], int len)
+{
+int i, j, k;
+char chr[4];
+
+for (i = 0, j=-1, k=0; i < len; i+=4)
+    {
+    chr[0] = strchr(base64_table, inp[i]) - base64_table;
+
+    chr[1] = strchr(base64_table, inp[i+1]) - base64_table;
+
+    if (inp[i+2] == '=')
+        {
+        chr[2] = 0;
+        k++;
+        }
+    else
+        chr[2] = strchr(base64_table, inp[i+2]) - base64_table;
+
+    if (inp[i+3] == '=')
+        {
+        chr[3] = 0;
+        k++;
+        }
+    else
+        chr[3] = strchr(base64_table, inp[i+3]) - base64_table;
+
+    outp[++j] = ((chr[0] << 2) | (chr[1] >> 4));
+    outp[++j] = ((chr[1] << 4) | (chr[2] >> 2));
+    outp[++j] = ((chr[2] & 0x03 )<< 6) | (chr[3] & 0x3f);
+    }
+
+outp[j+1-k] = '\0';
+
+return j+1-k;
+}
+
+///===============
+
+#define NULL ((void*)0)
+
+typedef struct
+{
+void	*name;
+void	*function;
+} export_t;
+
+char szbase64_encode[]={"base64_encode"};
+char szbase64_decode[]={"base64_decode"};
+
+export_t EXPORTS[] =
+{
+{szbase64_encode, (void*) base64_encode},
+{szbase64_decode, (void*) base64_decode},
+{ NULL, NULL },
+};
+
+///===============

programs/develop/libraries/base64/base64.h

@@ -0,0 +1,4 @@
+
+char* my_strchr (const char *s, int c);
+int base64_encode(char inp[], char outp[], int len);
+int base64_decode(char inp[], char outp[], int len);

programs/develop/libraries/base64/compile.bat

@@ -0,0 +1,4 @@
+del base64.obj
+gcc -c -o base64.obj base64.c
+kpack base64.obj
+pause

programs/develop/libraries/base64/readme.txt

@@ -0,0 +1,11 @@
+Кодирование/декодирование base64
+================================
+
+int base64_encode(char inp[], char outp[], int len);
+Кодирование массива inp длиной len в массив outp (строку с '\0'). Функция возвращает длину outp.
+
+int base64_decode(char inp[], char outp[], int len);
+Декодирование массива inp длиной len в массив outp (строку с '\0'). Функция возвращает длину outp.
+
+================================
+Albom, 2010