Annotation of src/usr.bin/tmux/cmd-show-environment.c, Revision 1.25
1.25 ! nicm 1: /* $OpenBSD: cmd-show-environment.c,v 1.24 2020/03/31 17:14:40 nicm Exp $ */
1.1 nicm 2:
3: /*
1.18 nicm 4: * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
21: #include <stdlib.h>
22: #include <string.h>
23:
24: #include "tmux.h"
25:
26: /*
27: * Show environment.
28: */
29:
1.22 nicm 30: static enum cmd_retval cmd_show_environment_exec(struct cmd *,
31: struct cmdq_item *);
1.10 nicm 32:
1.20 nicm 33: static char *cmd_show_environment_escape(struct environ_entry *);
1.22 nicm 34: static void cmd_show_environment_print(struct cmd *, struct cmdq_item *,
1.20 nicm 35: struct environ_entry *);
1.1 nicm 36:
37: const struct cmd_entry cmd_show_environment_entry = {
1.15 nicm 38: .name = "show-environment",
39: .alias = "showenv",
40:
1.24 nicm 41: .args = { "hgst:", 0, 1 },
42: .usage = "[-hgs] " CMD_TARGET_SESSION_USAGE " [name]",
1.15 nicm 43:
1.23 nicm 44: .target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },
1.16 nicm 45:
1.21 nicm 46: .flags = CMD_AFTERHOOK,
1.15 nicm 47: .exec = cmd_show_environment_exec
1.1 nicm 48: };
49:
1.20 nicm 50: static char *
1.10 nicm 51: cmd_show_environment_escape(struct environ_entry *envent)
52: {
53: const char *value = envent->value;
54: char c, *out, *ret;
55:
56: out = ret = xmalloc(strlen(value) * 2 + 1); /* at most twice the size */
57: while ((c = *value++) != '\0') {
58: /* POSIX interprets $ ` " and \ in double quotes. */
59: if (c == '$' || c == '`' || c == '"' || c == '\\')
60: *out++ = '\\';
61: *out++ = c;
62: }
63: *out = '\0';
64:
1.11 nicm 65: return (ret);
1.10 nicm 66: }
67:
1.20 nicm 68: static void
1.22 nicm 69: cmd_show_environment_print(struct cmd *self, struct cmdq_item *item,
1.10 nicm 70: struct environ_entry *envent)
71: {
1.25 ! nicm 72: struct args *args = cmd_get_args(self);
1.24 nicm 73: char *escaped;
74:
75: if (!args_has(args, 'h') && (envent->flags & ENVIRON_HIDDEN))
76: return;
77: if (args_has(args, 'h') && (~envent->flags & ENVIRON_HIDDEN))
78: return;
1.10 nicm 79:
1.25 ! nicm 80: if (!args_has(args, 's')) {
1.10 nicm 81: if (envent->value != NULL)
1.22 nicm 82: cmdq_print(item, "%s=%s", envent->name, envent->value);
1.10 nicm 83: else
1.22 nicm 84: cmdq_print(item, "-%s", envent->name);
1.10 nicm 85: return;
86: }
87:
88: if (envent->value != NULL) {
89: escaped = cmd_show_environment_escape(envent);
1.22 nicm 90: cmdq_print(item, "%s=\"%s\"; export %s;", envent->name, escaped,
1.10 nicm 91: envent->name);
92: free(escaped);
93: } else
1.22 nicm 94: cmdq_print(item, "unset %s;", envent->name);
1.10 nicm 95: }
96:
1.20 nicm 97: static enum cmd_retval
1.22 nicm 98: cmd_show_environment_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 99: {
1.25 ! nicm 100: struct args *args = cmd_get_args(self);
1.3 nicm 101: struct environ *env;
102: struct environ_entry *envent;
1.19 nicm 103: const char *target;
1.1 nicm 104:
1.19 nicm 105: if ((target = args_get(args, 't')) != NULL) {
1.23 nicm 106: if (item->target.s == NULL) {
1.22 nicm 107: cmdq_error(item, "no such session: %s", target);
1.19 nicm 108: return (CMD_RETURN_ERROR);
109: }
110: }
111:
1.25 ! nicm 112: if (args_has(args, 'g'))
1.12 nicm 113: env = global_environ;
1.19 nicm 114: else {
1.23 nicm 115: if (item->target.s == NULL) {
1.19 nicm 116: target = args_get(args, 't');
117: if (target != NULL)
1.22 nicm 118: cmdq_error(item, "no such session: %s", target);
1.19 nicm 119: else
1.22 nicm 120: cmdq_error(item, "no current session");
1.19 nicm 121: return (CMD_RETURN_ERROR);
122: }
1.23 nicm 123: env = item->target.s->environ;
1.19 nicm 124: }
1.5 nicm 125:
126: if (args->argc != 0) {
127: envent = environ_find(env, args->argv[0]);
128: if (envent == NULL) {
1.22 nicm 129: cmdq_error(item, "unknown variable: %s", args->argv[0]);
1.6 nicm 130: return (CMD_RETURN_ERROR);
1.5 nicm 131: }
1.22 nicm 132: cmd_show_environment_print(self, item, envent);
1.6 nicm 133: return (CMD_RETURN_NORMAL);
1.1 nicm 134: }
135:
1.12 nicm 136: envent = environ_first(env);
137: while (envent != NULL) {
1.22 nicm 138: cmd_show_environment_print(self, item, envent);
1.12 nicm 139: envent = environ_next(envent);
140: }
1.6 nicm 141: return (CMD_RETURN_NORMAL);
1.1 nicm 142: }
![[BACK]](/icons/back.gif){kind=icon}
Return to cmd-show-environment.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux