From f5cbf9eb57b0dd38ed8054eff02defec1602f57a Mon Sep 17 00:00:00 2001
From: Paul LeoNerd Evans <leonerd@leonerd.org.uk>
Date: Tue, 24 Apr 2012 17:27:48 +0100
Subject: Also handle CSI R; position report replies to CSI 6n

---
 driver-csi.c   | 17 +++++++++++++++++
 t/31position.c | 28 ++++++++++++++++++++++++++++
 termkey.c      | 27 +++++++++++++++++++++++++++
 termkey.h.in   |  5 ++++-
 4 files changed, 76 insertions(+), 1 deletion(-)
 create mode 100644 t/31position.c

diff --git a/driver-csi.c b/driver-csi.c
index 1719e70..d305356 100644
--- a/driver-csi.c
+++ b/driver-csi.c
@@ -187,6 +187,21 @@ static TermKeyResult handle_csi_mouse(TermKey *tk, TermKeyKey *key, int cmd, lon
   return TERMKEY_RES_NONE;
 }
 
+/*
+ * Handler for CSI R position reports
+ */
+
+static TermKeyResult handle_csi_position(TermKey *tk, TermKeyKey *key, int cmd, long *arg, int args)
+{
+  if(args < 2)
+    return TERMKEY_RES_NONE;
+
+  key->type = TERMKEY_TYPE_POSITION;
+  termkey_key_set_linecol(key, arg[0], arg[1]);
+
+  return TERMKEY_RES_KEY;
+}
+
 static int register_keys(void)
 {
   int i;
@@ -268,6 +283,8 @@ static int register_keys(void)
   csi_handlers['M' - 0x40] = &handle_csi_mouse;
   csi_handlers['m' - 0x40] = &handle_csi_mouse;
 
+  csi_handlers['R' - 0x40] = &handle_csi_position;
+
   keyinfo_initialised = 1;
   return 1;
 }
diff --git a/t/31position.c b/t/31position.c
new file mode 100644
index 0000000..baefb8b
--- /dev/null
+++ b/t/31position.c
@@ -0,0 +1,28 @@
+#include "../termkey.h"
+#include "taplib.h"
+
+int main(int argc, char *argv[])
+{
+  TermKey   *tk;
+  TermKeyKey key;
+  int        line, col;
+
+  plan_tests(5);
+
+  tk = termkey_new_abstract("vt100", 0);
+
+  termkey_push_bytes(tk, "\e[15;7R", 7);
+
+  is_int(termkey_getkey(tk, &key), TERMKEY_RES_KEY, "getkey yields RES_KEY for position report");
+
+  is_int(key.type, TERMKEY_TYPE_POSITION, "key.type for position report");
+
+  is_int(termkey_interpret_position(tk, &key, &line, &col), TERMKEY_RES_KEY, "interpret_position yields RES_KEY");
+
+  is_int(line,  7, "line for position report");
+  is_int(col,  15, "column for position report");
+
+  termkey_destroy(tk);
+
+  return exit_status();
+}
diff --git a/termkey.c b/termkey.c
index ade90a8..e080fec 100644
--- a/termkey.c
+++ b/termkey.c
@@ -956,6 +956,16 @@ TermKeyResult termkey_interpret_mouse(TermKey *tk, const TermKeyKey *key, TermKe
   return TERMKEY_RES_KEY;
 }
 
+TermKeyResult termkey_interpret_position(TermKey *tk, const TermKeyKey *key, int *line, int *col)
+{
+  if(key->type != TERMKEY_TYPE_POSITION)
+    return TERMKEY_RES_NONE;
+
+  termkey_key_get_linecol(key, line, col);
+
+  return TERMKEY_RES_KEY;
+}
+
 TermKeyResult termkey_getkey(TermKey *tk, TermKeyKey *key)
 {
   size_t nbytes = 0;
@@ -1297,6 +1307,9 @@ size_t termkey_strfkey(TermKey *tk, char *buffer, size_t len, TermKeyKey *key, T
       }
     }
     break;
+  case TERMKEY_TYPE_POSITION:
+    l = snprintf(buffer + pos, len - pos, "Position");
+    break;
   }
 
   if(l <= 0) return pos;
@@ -1394,18 +1407,32 @@ int termkey_keycmp(TermKey *tk, const TermKeyKey *key1p, const TermKeyKey *key2p
     case TERMKEY_TYPE_UNICODE:
       if(key1.code.codepoint != key2.code.codepoint)
         return key1.code.codepoint - key2.code.codepoint;
+      break;
     case TERMKEY_TYPE_KEYSYM:
       if(key1.code.sym != key2.code.sym)
         return key1.code.sym - key2.code.sym;
+      break;
     case TERMKEY_TYPE_FUNCTION:
       if(key1.code.number != key2.code.number)
         return key1.code.number - key2.code.number;
+      break;
     case TERMKEY_TYPE_MOUSE:
       {
         int cmp = strncmp(key1.code.mouse, key2.code.mouse, 4);
         if(cmp != 0)
           return cmp;
       }
+      break;
+    case TERMKEY_TYPE_POSITION:
+      {
+        int line1, col1, line2, col2;
+        termkey_interpret_position(tk, &key1, &line1, &col1);
+        termkey_interpret_position(tk, &key2, &line2, &col2);
+        if(line1 != line2)
+          return line1 - line2;
+        return col1 - col2;
+      }
+      break;
   }
 
   return key1.modifiers - key2.modifiers;
diff --git a/termkey.h.in b/termkey.h.in
index 6c91b09..bd5187c 100644
--- a/termkey.h.in
+++ b/termkey.h.in
@@ -95,7 +95,8 @@ typedef enum {
   TERMKEY_TYPE_UNICODE,
   TERMKEY_TYPE_FUNCTION,
   TERMKEY_TYPE_KEYSYM,
-  TERMKEY_TYPE_MOUSE
+  TERMKEY_TYPE_MOUSE,
+  TERMKEY_TYPE_POSITION
 } TermKeyType;
 
 typedef enum {
@@ -199,6 +200,8 @@ TermKeySym termkey_keyname2sym(TermKey *tk, const char *keyname);
 
 TermKeyResult termkey_interpret_mouse(TermKey *tk, const TermKeyKey *key, TermKeyMouseEvent *event, int *button, int *line, int *col);
 
+TermKeyResult termkey_interpret_position(TermKey *tk, const TermKeyKey *key, int *line, int *col);
+
 typedef enum {
   TERMKEY_FORMAT_LONGMOD     = 1 << 0, /* Shift-... instead of S-... */
   TERMKEY_FORMAT_CARETCTRL   = 1 << 1, /* ^X instead of C-X */
-- 
cgit v1.2.3-70-g09d2