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Ctrl+w support in linenoise.

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antirez 2012-10-26 16:06:25 +02:00
parent 89423052ca
commit c5cca554d9
1 changed files with 37 additions and 20 deletions
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57
deps/linenoise/linenoise.c vendored
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@ -8,34 +8,37 @@
* Does a number of crazy assumptions that happen to be true in 99.9999% of * Does a number of crazy assumptions that happen to be true in 99.9999% of
* the 2010 UNIX computers around. * the 2010 UNIX computers around.
* *
* ------------------------------------------------------------------------
*
* Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com> * Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
* Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com> * Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
* *
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * 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, * * Redistributions in binary form must reproduce the above copyright
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the * notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution. * 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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* specific prior written permission. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* 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: * References:
* - http://invisible-island.net/xterm/ctlseqs/ctlseqs.html * - 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 len = 0;
size_t cols = getColumns(); size_t cols = getColumns();
int history_index = 0; int history_index = 0;
size_t old_pos;
size_t diff;
buf[0] = '\0'; buf[0] = '\0';
buflen--; /* Make sure there is always space for the nulterm */ buflen--; /* Make sure there is always space for the nulterm */
@ -465,6 +470,18 @@ up_down_arrow:
case 12: /* ctrl+l, clear screen */ case 12: /* ctrl+l, clear screen */
linenoiseClearScreen(); linenoiseClearScreen();
refreshLine(fd,prompt,buf,len,pos,cols); 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; return len;