Ctrl+w support in linenoise.

1 files changed, 37 insertions, 20 deletions

diff --git a/deps/linenoise/linenoise.c b/deps/linenoise/linenoise.c
index 18a15cc45..4632f7de8 100644
--- a/deps/linenoise/linenoise.c
+++ b/deps/linenoise/linenoise.c
@@ -8,34 +8,37 @@
  * Does a number of crazy assumptions that happen to be true in 99.9999% of
  * the 2010 UNIX computers around.
  *
+ * ------------------------------------------------------------------------
+ *
  * Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
  * Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
  *
  * All rights reserved.
- *
+ * 
  * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ *  *  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
  *
- *   * Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer.
- *   * Redistributions in binary form must reproduce the above copyright
+ *  *  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
- *   * Neither the name of Redis nor the names of its contributors may be used
- *     to endorse or promote products derived from this software without
- *     specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * ------------------------------------------------------------------------
  *
  * References:
  * - http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
@@ -290,6 +293,8 @@ static int linenoisePrompt(int fd, char *buf, size_t buflen, const char *prompt)
     size_t len = 0;
     size_t cols = getColumns();
     int history_index = 0;
+    size_t old_pos;
+    size_t diff;
 
     buf[0] = '\0';
     buflen--; /* Make sure there is always space for the nulterm */
@@ -465,6 +470,18 @@ up_down_arrow:
         case 12: /* ctrl+l, clear screen */
             linenoiseClearScreen();
             refreshLine(fd,prompt,buf,len,pos,cols);
+            break;
+        case 23: /* ctrl+w, delete previous word */
+            old_pos = pos;
+            while (pos > 0 && buf[pos-1] == ' ')
+                pos--;
+            while (pos > 0 && buf[pos-1] != ' ')
+                pos--;
+            diff = old_pos - pos;
+            memmove(&buf[pos], &buf[old_pos], len-old_pos+1);
+            len -= diff;
+            refreshLine(fd,prompt,buf,len,pos,cols);
+            break;
         }
     }
     return len;