cmdline (merge-intel): support ctrl-w in librte_cmdline
[libcmdline.git] / src / lib / cmdline_rdline.c
index d439be7..91217be 100644 (file)
@@ -1,3 +1,37 @@
+/*-
+ * Copyright (c) <2010>, Intel Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * 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 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 Intel Corporation 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.
+ */
+
 /*
  * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
  * All rights reserved.
@@ -57,7 +91,8 @@ isblank2(char c)
        return 0;
 }
 
-void rdline_init(struct rdline *rdl,
+void
+rdline_init(struct rdline *rdl,
                 rdline_write_char_t *write_char,
                 rdline_validate_t *validate,
                 rdline_complete_t *complete)
@@ -100,6 +135,12 @@ rdline_stop(struct rdline *rdl)
        rdl->status = RDLINE_INIT;
 }
 
+void
+rdline_quit(struct rdline *rdl)
+{
+       rdl->status = RDLINE_EXITED;
+}
+
 void
 rdline_restart(struct rdline *rdl)
 {
@@ -123,22 +164,25 @@ rdline_get_buffer(struct rdline *rdl)
 }
 
 static void
-display_right_buffer(struct rdline *rdl)
+display_right_buffer(struct rdline *rdl, int force)
 {
        unsigned int i;
        char tmp;
 
+       if (!force && CIRBUF_IS_EMPTY(&rdl->right))
+               return;
+
        rdline_puts(rdl, vt100_clear_right);
-       if (!CIRBUF_IS_EMPTY(&rdl->right)) {
-               CIRBUF_FOREACH(&rdl->right, i, tmp) {
-                       rdl->write_char(rdl, tmp);
-               }
+       CIRBUF_FOREACH(&rdl->right, i, tmp) {
+               rdl->write_char(rdl, tmp);
+       }
+       if (!CIRBUF_IS_EMPTY(&rdl->right))
                rdline_miniprintf(rdl, vt100_multi_left,
                                  CIRBUF_GET_LEN(&rdl->right));
-       }
 }
 
-void rdline_redisplay(struct rdline *rdl)
+void
+rdline_redisplay(struct rdline *rdl)
 {
        unsigned int i;
        char tmp;
@@ -149,7 +193,7 @@ void rdline_redisplay(struct rdline *rdl)
        CIRBUF_FOREACH(&rdl->left, i, tmp) {
                rdl->write_char(rdl, tmp);
        }
-       display_right_buffer(rdl);
+       display_right_buffer(rdl, 1);
 }
 
 int
@@ -162,12 +206,14 @@ rdline_char_in(struct rdline *rdl, char c)
        char *buf;
 #endif
 
+       if (rdl->status == RDLINE_EXITED)
+               return RDLINE_RES_EXITED;
        if (rdl->status != RDLINE_RUNNING)
-               return -1;
+               return RDLINE_RES_NOT_RUNNING;
 
        cmd = vt100_parser(&rdl->vt100, c);
        if (cmd == -2)
-               return 0;
+               return RDLINE_RES_SUCCESS;
 
        if (cmd >= 0) {
                switch (cmd) {
@@ -228,11 +274,12 @@ rdline_char_in(struct rdline *rdl, char c)
                case CMDLINE_KEY_BKSPACE:
                        if(!cirbuf_del_tail_safe(&rdl->left)) {
                                rdline_puts(rdl, vt100_bs);
-                               display_right_buffer(rdl);
+                               display_right_buffer(rdl, 1);
                        }
                        break;
 
                case CMDLINE_KEY_META_BKSPACE:
+               case CMDLINE_KEY_CTRL_W:
                        while (! CIRBUF_IS_EMPTY(&rdl->left) && isblank2(cirbuf_get_tail(&rdl->left))) {
                                rdline_puts(rdl, vt100_bs);
                                cirbuf_del_tail(&rdl->left);
@@ -241,7 +288,7 @@ rdline_char_in(struct rdline *rdl, char c)
                                rdline_puts(rdl, vt100_bs);
                                cirbuf_del_tail(&rdl->left);
                        }
-                       display_right_buffer(rdl);
+                       display_right_buffer(rdl, 1);
                        break;
 
                case CMDLINE_KEY_SUPPR:
@@ -249,10 +296,10 @@ rdline_char_in(struct rdline *rdl, char c)
                        if (cmd == CMDLINE_KEY_CTRL_D &&
                            CIRBUF_IS_EMPTY(&rdl->left) &&
                            CIRBUF_IS_EMPTY(&rdl->right)) {
-                               return -2;
+                               return RDLINE_RES_EOF;
                        }
                        if (!cirbuf_del_head_safe(&rdl->right)) {
-                               display_right_buffer(rdl);
+                               display_right_buffer(rdl, 1);
                        }
                        break;
 
@@ -297,7 +344,7 @@ rdline_char_in(struct rdline *rdl, char c)
                                rdl->write_char(rdl, rdl->kill_buf[i]);
                                i++;
                        }
-                       display_right_buffer(rdl);
+                       display_right_buffer(rdl, 0);
                        break;
 #endif /* !NO_RDLINE_KILL_BUF */
 
@@ -331,12 +378,12 @@ rdline_char_in(struct rdline *rdl, char c)
                                                    &complete_state);
                                /* no completion or error */
                                if (ret <= 0) {
-                                       return 2;
+                                       return RDLINE_RES_COMPLETE;
                                }
 
                                tmp_size = strlen(tmp_buf);
                                /* add chars */
-                               if (ret == 2) {
+                               if (ret == RDLINE_RES_COMPLETE) {
                                        i=0;
                                        while(CIRBUF_GET_LEN(&rdl->right) + CIRBUF_GET_LEN(&rdl->left) <
                                              RDLINE_BUF_SIZE &&
@@ -345,8 +392,8 @@ rdline_char_in(struct rdline *rdl, char c)
                                                rdl->write_char(rdl, tmp_buf[i]);
                                                i++;
                                        }
-                                       display_right_buffer(rdl);
-                                       return 2; /* ?? */
+                                       display_right_buffer(rdl, 1);
+                                       return RDLINE_RES_COMPLETE; /* ?? */
                                }
 
                                /* choice */
@@ -363,7 +410,7 @@ rdline_char_in(struct rdline *rdl, char c)
 
                                rdline_redisplay(rdl);
                        }
-                       return 2;
+                       return RDLINE_RES_COMPLETE;
 
                case CMDLINE_KEY_RETURN:
                case CMDLINE_KEY_RETURN2:
@@ -377,7 +424,10 @@ rdline_char_in(struct rdline *rdl, char c)
 
                        if (rdl->validate)
                                rdl->validate(rdl, rdl->left_buf, CIRBUF_GET_LEN(&rdl->left)+2);
-                       return 1;
+                       /* user may have stopped rdline */
+                       if (rdl->status == RDLINE_EXITED)
+                               return RDLINE_RES_EXITED;
+                       return RDLINE_RES_VALIDATED;
 
 #ifndef NO_RDLINE_HISTORY
                case CMDLINE_KEY_UP_ARR:
@@ -423,23 +473,23 @@ rdline_char_in(struct rdline *rdl, char c)
                        break;
                }
 
-               return 0;
+               return RDLINE_RES_SUCCESS;
        }
 
-       if (! isprint(c))
-               return 0;
+       if (!isprint((int)c))
+               return RDLINE_RES_SUCCESS;
 
        /* standard chars */
        if (CIRBUF_GET_LEN(&rdl->left) + CIRBUF_GET_LEN(&rdl->right) >= RDLINE_BUF_SIZE)
-               return 0;
+               return RDLINE_RES_SUCCESS;
 
        if (cirbuf_add_tail_safe(&rdl->left, c))
-               return 0;
+               return RDLINE_RES_SUCCESS;
 
        rdl->write_char(rdl, c);
-       display_right_buffer(rdl);
+       display_right_buffer(rdl, 0);
 
-       return 0;
+       return RDLINE_RES_SUCCESS;
 }
 
 
@@ -587,9 +637,9 @@ rdline_miniprintf(struct rdline *rdl, const char * buf, unsigned int val)
                }
                /* val is never more than 255 */
                while (div) {
-                       c = val / div;
+                       c = (char)(val / div);
                        if (c || started) {
-                               rdl->write_char(rdl, c+'0');
+                               rdl->write_char(rdl, (char)(c+'0'));
                                started = 1;
                        }
                        val %= div;