added read and write ctring from int

2 files changed, 39 insertions, 0 deletions

diff --git a/inc/pack.h b/inc/pack.h
index 0979877..ca96749 100644
--- a/inc/pack.h
+++ b/inc/pack.h
@@ -17,4 +17,10 @@ int readint(char **cp);
 /* the given pointer is incremented */
 void writeint(int in, char **cp);
 
+/* reads a teworlds string from given ints */
+void intstostr(const int *ints, int num, char *str);
+
+/* writes a teeworlds string into ints */
+void strtoint(const char *str, int num, int *ints);
+
 #endif // PACK_H
diff --git a/src/pack.c b/src/pack.c
index 561846d..9e1d4fe 100644
--- a/src/pack.c
+++ b/src/pack.c
@@ -106,3 +106,36 @@ void writeint(int i, char **cp)
         (*cp)++;
     }
 }
+
+void intstostr(const int *ints, int num, char *str)
+{
+    while (num)
+    {
+        str[0] = (((*ints) >> 24) & 0xff) - 128;
+        str[1] = (((*ints) >> 16) & 0xff) - 128;
+        str[2] = (((*ints) >> 8) & 0xff) - 128;
+        str[3] = ((*ints) & 0xff) - 128;
+        str += 4;
+        ints++;
+        num--;
+    }
+}
+
+void strtoint(const char *str, int num, int *ints)
+{
+    int intloc = 3;
+    *ints = 0;
+    while (num)
+    {
+        if (intloc < 0)
+        {
+            ints++;
+            *ints = 0;
+            intloc = 3;
+        }
+        *ints |= (*str + 128) << (8 * intloc);
+        str++;
+        intloc--;
+        num--;
+    }
+}