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git.ipfire.org Git - thirdparty/e2fsprogs.git/blob - lib/ss/get_readline.c
2 * Copyright 2003 by MIT Student Information Processing Board
4 * Permission to use, copy, modify, and distribute this software and
5 * its documentation for any purpose is hereby granted, provided that
6 * the names of M.I.T. and the M.I.T. S.I.P.B. not be used in
7 * advertising or publicity pertaining to distribution of the software
8 * without specific, written prior permission. M.I.T. and the
9 * M.I.T. S.I.P.B. make no representations about the suitability of
10 * this software for any purpose. It is provided "as is" without
11 * express or implied warranty.
18 #include "ss_internal.h"
19 #define size sizeof(ss_data *)
25 static void ss_release_readline(ss_data
*info
)
27 if (!info
->readline_handle
)
31 info
->add_history
= 0;
33 info
->rl_completion_matches
= 0;
34 dlclose(info
->readline_handle
);
35 info
->readline_handle
= 0;
39 /* Libraries we will try to use for readline/editline functionality */
40 #define DEFAULT_LIBPATH "libreadline.so.7:libreadline.so.6:libreadline.so.5:libreadline.so.4:libreadline.so:libedit.so.2:libedit.so:libeditline.so.0:libeditline.so"
43 void ss_get_readline(int sci_idx
)
46 ss_data
*info
= ss_info(sci_idx
);
47 const char **t
, *libpath
= 0;
48 char *tmp
, *cp
, *next
;
49 char **(**completion_func
)(const char *, int, int);
51 if (info
->readline_handle
)
54 libpath
= ss_safe_getenv("SS_READLINE_PATH");
56 libpath
= DEFAULT_LIBPATH
;
57 if (*libpath
== 0 || !strcmp(libpath
, "none"))
60 tmp
= malloc(strlen(libpath
)+1);
64 for (cp
= tmp
; cp
; cp
= next
) {
65 next
= strchr(cp
, ':');
70 if ((handle
= dlopen(cp
, RTLD_NOW
))) {
71 /* printf("Using %s for readline library\n", cp); */
79 info
->readline_handle
= handle
;
80 info
->readline
= (char *(*)(const char *))
81 dlsym(handle
, "readline");
82 info
->add_history
= (void (*)(const char *))
83 dlsym(handle
, "add_history");
84 info
->redisplay
= (void (*)(void))
85 dlsym(handle
, "rl_forced_update_display");
86 info
->rl_completion_matches
= (char **(*)(const char *,
87 char *(*)(const char *, int)))
88 dlsym(handle
, "rl_completion_matches");
89 if ((t
= dlsym(handle
, "rl_readline_name")) != NULL
)
90 *t
= info
->subsystem_name
;
91 if ((completion_func
=
92 dlsym(handle
, "rl_attempted_completion_function")) != NULL
)
93 *completion_func
= ss_rl_completion
;
94 info
->readline_shutdown
= ss_release_readline
;
97 void ss_get_readline(int sci_idx
__SS_ATTR((unused
)))