More work

[pd_readline] / funcs.c

diff --git a/funcs.c b/funcs.c
index e259f16c68c6265e0ed5cc27a6519ae0aeb02030..3623220228d841bc52735d64f52f04e18f665323 100644 (file)
--- a/funcs.c
+++ b/funcs.c
@@ -13,21 +13,95 @@
 #include <stdlib.h> 
 #include "pd_readline.h"  
 
+/* Note - make the up and down funcs return a buffer.     */ 
+/* A line from the history file can be put into the       */ 
+/* array member of the buffer.                            */ 
+/* Also test for the top and bottom of the history file.  */     
 
-/* Move up in history list. */ 
-int up(int i) 
+/*  Error function.  */ 
+void error(void)
 { 
-  
+   printf("Error \n");         
+}      
+
+
+
+/*  Display a buffer  */ 
+void show(buf b)
+{ 
+   printf("%s", b.array);                      
+}      
+
 
 
+/* Enter a char into a buffer and display the buffer array.  */ 
+buf set(buf b, int i)
+{ 
+  if ( (b.index < 80)  )  
+    { 
+          b.array[b.index] = i;        
+          b.index += 1 ;
+    } 
+  else
+    { 
+          memset(&b.array[0], 0, sizeof(b.array) ); 
+          b.array[0] = i;
+          b.index += 1 ;               
+    }          
+  
+  show(b); 
+  return b;    
+       
 } 
 
 
-/* Move down in history list. */ 
-int down(int i) 
+/*  Return a line from hist.  */ 
+buf get(hist h)
 { 
+   buf b; 
+   memcpy(&b.array[0], h.array[h.curindex], 80); 
+   return b;           
+}       
+
 
 
+/* Move up in history list. */ 
+hist up(hist h) 
+{ 
+       
+  buf b;         
+       
+  if ( (h.curindex > 0) )  
+    { 
+               h.curindex -= 1; 
+               memset(&b.array[0], 0, sizeof(b.array) ); 
+               memcpy(&b.array[0], h.array[h.curindex], 80);   
+               show(b);                
+        return h;              
+    }    
+     
+  else error();  
+  
+} 
+
+
+/* Move down in history list. */ 
+hist down(hist h) 
+{ 
+       
+  buf b;         
+       
+  if ( (h.curindex < 19) )  
+    { 
+               h.curindex += 1; 
+               memset(&b.array[0], 0, sizeof(b.array) ); 
+               memcpy(&b.array[0], h.array[h.curindex], 80); 
+               show(b);    
+        return h;                      
+    }  
+    
+  else error();     
+  
 } 
 
 
@@ -63,17 +137,52 @@ buf insch(buf b)
 } 
 
 
-
-/*  Function to handle escape sequences. */ 
-int esc(int i) 
+void enter(void) 
 { 
+       printf("Enter ");               
+}      
+
+
+/* Find if a number is in a given range. */ 
+int range(int rstart, int rend, int i)
+{
+   if ( (rstart <= i) && (i <= rend) ) return 1;
+   else return 0;      
        
-       
-       
-       
-}      
+}      
 
 
+/* Assign a type depending on the range that a  */ 
+/* number is in.                                */ 
+int type(int i)
+{ 
+   int ret; 
+   
+        if ( range(0, 9, i) == 1 )       ret = 1; 
+   else if ( range(10, 10, i) == 1 )     ret = 2; 
+   else if ( range(27, 27, i) == 1 )     ret = 3; 
+   else if ( range(32, 126, i) == 1 )    ret = 4;         
+   else if ( range(127, 127, i) == 1 )   ret = 5;
+   else ret = 6;          
+    
+   return ret; 
+   
+}     
+       
+
+/*  Function for special key combinations  */ 
+/*  (Ctrl, Alt, function keys.             */ 
+void spec(hist h)
+{ 
+       
+  int j = getch();  
+    
+       if ( ( j == 65 )        )  up(h); 
+  else if ( ( j == 66 )        )  down(h); 
+  else if ( ( j == 67 )        )  printf("Right "); 
+  else if ( ( j == 68 )        )  printf("Left "); 
+               
+}