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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jiri Svoboda |
2 | * Copyright (c) 2008 Jiri Svoboda |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup debug |
29 | /** @addtogroup debug |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <stdio.h> |
35 | #include <stdio.h> |
36 | #include <stdlib.h> |
36 | #include <stdlib.h> |
37 | 37 | ||
38 | #include "cons.h" |
38 | #include "cons.h" |
39 | 39 | ||
40 | static char *line_buffer; |
40 | static char *line_buffer; |
41 | static int line_chars; |
41 | static int line_chars; |
42 | 42 | ||
43 | static int line_active = 0; |
43 | static int line_active = 0; |
44 | 44 | ||
45 | static void line_show(void) |
45 | static void line_show(void) |
46 | { |
46 | { |
47 | int i; |
47 | int i; |
48 | 48 | ||
49 | printf("> "); |
49 | printf("> "); |
50 | for (i = 0; i < line_chars; ++i) |
50 | for (i = 0; i < line_chars; ++i) |
51 | putchar(line_buffer[i]); |
51 | putchar(line_buffer[i]); |
52 | } |
52 | } |
53 | 53 | ||
54 | static void line_hide(void) |
54 | static void line_hide(void) |
55 | { |
55 | { |
56 | int i; |
56 | int i; |
57 | 57 | ||
58 | printf("\b\b"); |
58 | printf("\b\b"); |
59 | for (i = 0; i < line_chars; ++i) |
59 | for (i = 0; i < line_chars; ++i) |
60 | putchar('\b'); |
60 | putchar('\b'); |
61 | } |
61 | } |
62 | 62 | ||
63 | void cons_printf(const char *fmt, ...) |
63 | void cons_printf(const char *fmt, ...) |
64 | { |
64 | { |
65 | va_list ap; |
65 | va_list ap; |
66 | 66 | ||
67 | if (line_active) line_hide(); |
67 | if (line_active) line_hide(); |
68 | va_start(ap, fmt); |
68 | va_start(ap, fmt); |
69 | vprintf(fmt, ap); |
69 | vprintf(fmt, ap); |
70 | va_end(ap); |
70 | va_end(ap); |
71 | if (line_active) line_show(); |
71 | if (line_active) line_show(); |
72 | } |
72 | } |
73 | 73 | ||
74 | void cons_read_line(char *buffer, int n) |
74 | void cons_read_line(char *buffer, int n) |
75 | { |
75 | { |
76 | char c; |
76 | char c; |
77 | int i; |
- | |
78 | 77 | ||
79 | line_buffer = buffer; |
78 | line_buffer = buffer; |
80 | line_chars = 0; |
79 | line_chars = 0; |
81 | 80 | ||
82 | line_active = 1; |
81 | line_active = 1; |
83 | line_show(); |
82 | line_show(); |
84 | 83 | ||
85 | line_chars = 0; |
84 | line_chars = 0; |
86 | while (line_chars < n - 1) { |
85 | while (line_chars < n - 1) { |
87 | c = getchar(); |
86 | c = getchar(); |
88 | if (c == '\n') break; |
87 | if (c == '\n') break; |
89 | if (c == '\b') { |
88 | if (c == '\b') { |
90 | if (line_chars > 0) { |
89 | if (line_chars > 0) { |
91 | putchar('\b'); |
90 | putchar('\b'); |
92 | --line_chars; |
91 | --line_chars; |
93 | } |
92 | } |
94 | continue; |
93 | continue; |
95 | } |
94 | } |
96 | 95 | ||
97 | putchar(c); |
96 | putchar(c); |
98 | buffer[line_chars++] = c; |
97 | buffer[line_chars++] = c; |
99 | } |
98 | } |
100 | 99 | ||
101 | putchar('\n'); |
100 | putchar('\n'); |
102 | buffer[line_chars] = '\0'; |
101 | buffer[line_chars] = '\0'; |
103 | 102 | ||
104 | line_active = 0; |
103 | line_active = 0; |
105 | } |
104 | } |
106 | 105 | ||
107 | /** @} |
106 | /** @} |
108 | */ |
107 | */ |
109 | 108 |