1 /****************************************************************************
2 * Copyright 2018,2020 Thomas E. Dickey *
3 * Copyright 2009-2010,2012 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
27 * authorization. *
28 ****************************************************************************/
29
30 /*
31 * $Id: linedata.h,v 1.8 2020/02/02 23:34:34 tom Exp $
32 *
33 * Utility functions for reading a line of text from a file.
34 */
35 #ifndef LINEDATA_H_incl
36 #define LINEDATA_H_incl 1
37
38 #include <test.priv.h>
39
40 #define isQUIT(c) ((c) == QUIT || (c) == ESCAPE)
41
42 #define key_RECUR CTRL('W')
43 #define key_NEWLINE CTRL('N')
44 #define key_BACKSPACE '\b'
45
46 static FILE *linedata;
47
48 static void
failed(const char * s)49 failed(const char *s)
50 {
51 perror(s);
52 ExitProgram(EXIT_FAILURE);
53 }
54
55 static void
init_linedata(const char * name)56 init_linedata(const char *name)
57 {
58 if ((linedata = fopen(name, "r")) == 0) {
59 failed(name);
60 }
61 }
62
63 static int
read_linedata(WINDOW * work)64 read_linedata(WINDOW *work)
65 {
66 int result;
67 if (linedata != 0) {
68 result = fgetc(linedata);
69 if (result == EOF) {
70 fclose(linedata);
71 linedata = 0;
72 result = read_linedata(work);
73 } else {
74 wrefresh(work);
75 if (result == '\n') {
76 result = key_NEWLINE;
77 }
78 }
79 } else {
80 #ifdef WIDE_LINEDATA
81 wint_t ch;
82 int code;
83
84 result = ERR;
85 while ((code = wget_wch(work, &ch)) != ERR) {
86
87 if (code == KEY_CODE_YES) {
88 switch (ch) {
89 case KEY_DOWN:
90 result = key_NEWLINE;
91 break;
92 case KEY_BACKSPACE:
93 result = key_BACKSPACE;
94 break;
95 default:
96 beep();
97 continue;
98 }
99 } else {
100 result = (int) ch;
101 break;
102 }
103 }
104 #else
105 result = wgetch(work);
106 #endif
107 }
108 return result;
109 }
110
111 #endif /* LINEDATA_H_incl */
112