Starting cleanup of code.

[pd_readline] / keyhandler.c

diff --git a/keyhandler.c b/keyhandler.c
new file mode 100644 (file)
index 0000000..0130e9b
--- /dev/null
+++ b/keyhandler.c
@@ -0,0 +1,77 @@
+
+
+
+/*  keyhandler.c                                       */ 
+/*  Handle keystrokes for pd_readline.                 */ 
+/*  This code is released to the public domain.        */ 
+/*  "Share and enjoy...."  ;)                          */  
+/*  See the UNLICENSE file for details.                */ 
+
+
+#include <string.h>   
+#include <stdio.h> 
+#include <stdlib.h> 
+#include <termios.h>  
+
+
+/* This implementation of getch() is from here - */ 
+/* http://wesley.vidiqatch.org/                  */ 
+/* Thanks, Wesley!                               */  
+static struct termios old, new;
+
+/* Initialize new terminal i/o settings */
+void initTermios(int echo) {
+    tcgetattr(0, &old); /* grab old terminal i/o settings */
+    new = old; /* make new settings same as old settings */
+    new.c_lflag &= ~ICANON; /* disable buffered i/o */
+    new.c_lflag &= echo ? ECHO : ~ECHO; /* set echo mode */
+    tcsetattr(0, TCSANOW, &new); /* use these new terminal i/o settings now */
+}
+
+
+/* Restore old terminal i/o settings */
+void resetTermios(void) {
+    tcsetattr(0, TCSANOW, &old);
+}
+
+
+/* Read 1 character - echo defines echo mode */
+char getch_(int echo) {
+    char ch;
+    initTermios(echo);
+    ch = getchar();
+    resetTermios();
+    return ch;
+}
+
+
+/* Read 1 character without echo */
+char getch(void) {
+    return getch_(0);
+}
+
+
+/* Read 1 character with echo */
+char getche(void) {
+    return getch_(1);
+} 
+
+
+
+int keyhandler(void) 
+{ 
+  int i = getch(); 
+  
+  switch(i); 
+  { 
+    case (27):  escape() ; 
+    case (33):  dosomething();  
+    case (42):  something();
+    default:    stuff(): 
+  }   
+  
+} 
+
+
+
+