1 /*-
2 * Copyright (c) 1996
3 * Keith Bostic. All rights reserved.
4 *
5 * See the LICENSE file for redistribution information.
6 */
7
8 #include "config.h"
9
10 #ifndef lint
11 static const char sccsid[] = "@(#)ip_main.c 8.3 (Berkeley) 10/13/96";
12 #endif /* not lint */
13
14 #include <sys/types.h>
15 #include <sys/queue.h>
16
17 #include <bitstring.h>
18 #include <ctype.h>
19 #include <errno.h>
20 #include <stdio.h>
21
22 #include "../common/common.h"
23 #include "ip.h"
24
25 static void ip_func_std __P((GS *));
26 static IP_PRIVATE *ip_init __P((GS *, char *));
27 static void perr __P((char *, char *));
28
29 /*
30 * main --
31 * This is the main loop for the vi-as-library editor.
32 */
33 int
ip_main(argc,argv,gp,ip_arg)34 ip_main(argc, argv, gp, ip_arg)
35 int argc;
36 char *argv[], *ip_arg;
37 GS *gp;
38 {
39 EVENT ev;
40 IP_PRIVATE *ipp;
41 IP_BUF ipb;
42 int rval;
43
44 /* Create and partially initialize the IP structure. */
45 if ((ipp = ip_init(gp, ip_arg)) == NULL)
46 return (1);
47
48 /* Add the terminal type to the global structure. */
49 if ((OG_D_STR(gp, GO_TERM) =
50 OG_STR(gp, GO_TERM) = strdup("ip_curses")) == NULL)
51 perr(gp->progname, NULL);
52
53 /*
54 * Figure out how big the screen is -- read events until we get
55 * the rows and columns.
56 */
57 do {
58 if (ip_event(NULL, &ev, 0, 0))
59 return (1);
60 } while (ev.e_event != E_EOF && ev.e_event != E_ERR &&
61 ev.e_event != E_QUIT && ev.e_event != E_WRESIZE &&
62 ev.e_event != E_SIGHUP && ev.e_event != E_SIGTERM);
63 if (ev.e_event != E_WRESIZE)
64 return (1);
65
66 /* Run ex/vi. */
67 rval = editor(gp, argc, argv);
68
69 /* Clean up the screen. */
70 (void)ip_quit(gp);
71
72 /* Free the global and IP private areas. */
73 #if defined(DEBUG) || defined(PURIFY) || defined(LIBRARY)
74 free(ipp);
75 free(gp);
76 #endif
77
78 return (rval);
79 }
80
81 /*
82 * ip_init --
83 * Create and partially initialize the GS structure.
84 */
85 static IP_PRIVATE *
ip_init(gp,ip_arg)86 ip_init(gp, ip_arg)
87 GS *gp;
88 char *ip_arg;
89 {
90 IP_PRIVATE *ipp;
91 char *ep;
92
93 /* Allocate the IP private structure. */
94 CALLOC_NOMSG(NULL, ipp, IP_PRIVATE *, 1, sizeof(IP_PRIVATE));
95 if (ipp == NULL)
96 perr(gp->progname, NULL);
97 gp->ip_private = ipp;
98
99 /*
100 * Crack ip_arg -- it's of the form #.#, where the first number is the
101 * file descriptor from the screen, the second is the file descriptor
102 * to the screen.
103 */
104 if (!isdigit(ip_arg[0]))
105 goto usage;
106 ipp->i_fd = strtol(ip_arg, &ep, 10);
107 if (ep[0] != '.' || !isdigit(ep[1]))
108 goto usage;
109 ipp->o_fd = strtol(++ep, &ep, 10);
110 if (ep[0] != '\0') {
111 usage: ip_usage();
112 return (NULL);
113 }
114
115 /* Initialize the list of ip functions. */
116 ip_func_std(gp);
117
118 return (ipp);
119 }
120
121 /*
122 * ip_func_std --
123 * Initialize the standard ip functions.
124 */
125 static void
ip_func_std(gp)126 ip_func_std(gp)
127 GS *gp;
128 {
129 gp->scr_addstr = ip_addstr;
130 gp->scr_attr = ip_attr;
131 gp->scr_baud = ip_baud;
132 gp->scr_bell = ip_bell;
133 gp->scr_busy = ip_busy;
134 gp->scr_clrtoeol = ip_clrtoeol;
135 gp->scr_cursor = ip_cursor;
136 gp->scr_deleteln = ip_deleteln;
137 gp->scr_event = ip_event;
138 gp->scr_ex_adjust = ip_ex_adjust;
139 gp->scr_fmap = ip_fmap;
140 gp->scr_insertln = ip_insertln;
141 gp->scr_keyval = ip_keyval;
142 gp->scr_move = ip_move;
143 gp->scr_msg = NULL;
144 gp->scr_optchange = ip_optchange;
145 gp->scr_refresh = ip_refresh;
146 gp->scr_rename = ip_rename;
147 gp->scr_screen = ip_screen;
148 gp->scr_suspend = ip_suspend;
149 gp->scr_usage = ip_usage;
150 }
151
152 /*
153 * perr --
154 * Print system error.
155 */
156 static void
perr(name,msg)157 perr(name, msg)
158 char *name, *msg;
159 {
160 (void)fprintf(stderr, "%s:", name);
161 if (msg != NULL)
162 (void)fprintf(stderr, "%s:", msg);
163 (void)fprintf(stderr, "%s\n", strerror(errno));
164 exit(1);
165 }
166