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comparison lcdemu/main.c @ 0:e7f1035f10d4

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lcdemu: initial import from freecalypso-tools
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 14 Mar 2018 18:16:45 +0000
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-1:000000000000 0:e7f1035f10d4
1 /*
2 * LCDemu main module
3 */
4
5 #include <sys/types.h>
6 #include <sys/errno.h>
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <strings.h>
11 #include <X11/Xlib.h>
12 #include <X11/Xresource.h>
13 #include <X11/Xutil.h>
14 #include "globals.h"
15
16 main(argc, argv)
17 char **argv;
18 {
19 XrmInitialize();
20 process_cmdline(argc, argv);
21 open_display();
22 init_image_conversion();
23 load_resources();
24 create_our_window();
25 set_initial_window_title();
26 set_initial_icon_name();
27 create_mainwin_gc();
28 XMapWindow(mydisplay, mainwindow);
29 XFlush(mydisplay);
30
31 mainloop();
32 /* NOTREACHED */
33 }
34
35 process_cmdline(argc, argv)
36 char **argv;
37 {
38 register char **ap, *opt;
39 char *rhost, *ruser;
40 int len;
41
42 if (argc < 1) {
43 fprintf(stderr, "fc-lcdemu: invalid invokation\n");
44 exit(1);
45 }
46 opt = rindex(argv[0], '/');
47 if (opt)
48 progbasename = opt + 1;
49 else
50 progbasename = argv[0];
51 proginstancename = progbasename;
52 for (ap = argv+1; *ap; ) {
53 if (**ap == '-')
54 opt = *ap++;
55 else
56 break;
57 if (!strcmp(opt, "-display")) {
58 if (!*ap) {
59 argreq: fprintf(stderr, "%s: %s requires an argument\n",
60 progbasename, opt);
61 exit(1);
62 }
63 mydisplayname = *ap++;
64 continue;
65 }
66 if (!strcmp(opt, "-name")) {
67 if (!*ap)
68 goto argreq;
69 proginstancename = *ap++;
70 continue;
71 }
72 if (!strcmp(opt, "-geometry") || !strcmp(opt, "-geom")) {
73 if (!*ap)
74 goto argreq;
75 XrmPutStringResource(&xrmdb_cmdline, "LCDemu.geometry",
76 *ap++);
77 continue;
78 }
79 if (!strcmp(opt, "-iconic")) {
80 XrmPutStringResource(&xrmdb_cmdline, "LCDemu.iconic",
81 "on");
82 continue;
83 }
84 if (!strcmp(opt, "-title")) {
85 if (!*ap)
86 goto argreq;
87 XrmPutStringResource(&xrmdb_cmdline, "LCDemu.title",
88 *ap++);
89 continue;
90 }
91 if (!strcmp(opt, "-borderwidth") || !strcmp(opt, "-bw")) {
92 if (!*ap)
93 goto argreq;
94 XrmPutStringResource(&xrmdb_cmdline, "*borderWidth",
95 *ap++);
96 continue;
97 }
98 if (!strcmp(opt, "-bordercolor") || !strcmp(opt, "-bd")) {
99 if (!*ap)
100 goto argreq;
101 XrmPutStringResource(&xrmdb_cmdline, "*borderColor",
102 *ap++);
103 continue;
104 }
105 if (!strcmp(opt, "-xrm")) {
106 if (!*ap)
107 goto argreq;
108 XrmPutLineResource(&xrmdb_cmdline, *ap++);
109 continue;
110 }
111 fprintf(stderr, "%s: %s: unrecognized option\n", progbasename,
112 opt);
113 exit(1);
114 }
115 }
116
117 open_display()
118 {
119 if (!mydisplayname)
120 mydisplayname = getenv("DISPLAY");
121 if (!mydisplayname) {
122 fprintf(stderr, "%s: no X display available\n", progbasename);
123 exit(1);
124 }
125 mydisplay = XOpenDisplay(mydisplayname);
126 if (!mydisplay) {
127 fprintf(stderr, "%s: unable to open display %s\n", progbasename,
128 mydisplayname);
129 exit(1);
130 }
131 }
132
133 mainloop()
134 {
135 register int i, cc;
136 XEvent event;
137 fd_set readfds;
138 int maxfd;
139 char buf[1024];
140
141 maxfd = ConnectionNumber(mydisplay) + 1;
142 for (;;) {
143 cc = XPending(mydisplay);
144 for (i = 0; i < cc; i++)
145 XNextEvent(mydisplay, &event);
146 XFlush(mydisplay);
147 FD_ZERO(&readfds);
148 FD_SET(0, &readfds);
149 FD_SET(ConnectionNumber(mydisplay), &readfds);
150 i = select(maxfd, &readfds, NULL, NULL, NULL);
151 if (i < 0) {
152 if (errno == EINTR)
153 continue;
154 perror("select");
155 exit(1);
156 }
157 if (FD_ISSET(0, &readfds)) {
158 cc = read(0, buf, sizeof buf);
159 if (cc > 0)
160 input_on_stdin(buf, cc);
161 else
162 exit(0);
163 XFlush(mydisplay);
164 }
165 }
166 }