1 /*
2 * Copyright © 2012 Intel Corporation
3 * Copyright © 2012 Ran Benita
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Author: Daniel Stone <daniel@fooishbar.org>
25 */
26
27 #include <sys/types.h>
28 #include <sys/stat.h>
29 #include <errno.h>
30 #include <unistd.h>
31
32 #include "xkbcommon/xkbcommon.h"
33 #include "utils.h"
34 #include "context.h"
35
36 unsigned int
xkb_context_num_failed_include_paths(struct xkb_context * ctx)37 xkb_context_num_failed_include_paths(struct xkb_context *ctx)
38 {
39 return darray_size(ctx->failed_includes);
40 }
41
42 const char *
xkb_context_failed_include_path_get(struct xkb_context * ctx,unsigned int idx)43 xkb_context_failed_include_path_get(struct xkb_context *ctx,
44 unsigned int idx)
45 {
46 if (idx >= xkb_context_num_failed_include_paths(ctx))
47 return NULL;
48
49 return darray_item(ctx->failed_includes, idx);
50 }
51
52 xkb_atom_t
xkb_atom_lookup(struct xkb_context * ctx,const char * string)53 xkb_atom_lookup(struct xkb_context *ctx, const char *string)
54 {
55 return atom_lookup(ctx->atom_table, string, strlen(string));
56 }
57
58 xkb_atom_t
xkb_atom_intern(struct xkb_context * ctx,const char * string,size_t len)59 xkb_atom_intern(struct xkb_context *ctx, const char *string, size_t len)
60 {
61 return atom_intern(ctx->atom_table, string, len, false);
62 }
63
64 xkb_atom_t
xkb_atom_steal(struct xkb_context * ctx,char * string)65 xkb_atom_steal(struct xkb_context *ctx, char *string)
66 {
67 return atom_intern(ctx->atom_table, string, strlen(string), true);
68 }
69
70 const char *
xkb_atom_text(struct xkb_context * ctx,xkb_atom_t atom)71 xkb_atom_text(struct xkb_context *ctx, xkb_atom_t atom)
72 {
73 return atom_text(ctx->atom_table, atom);
74 }
75
76 void
xkb_log(struct xkb_context * ctx,enum xkb_log_level level,int verbosity,const char * fmt,...)77 xkb_log(struct xkb_context *ctx, enum xkb_log_level level, int verbosity,
78 const char *fmt, ...)
79 {
80 va_list args;
81
82 if (ctx->log_level < level || ctx->log_verbosity < verbosity)
83 return;
84
85 va_start(args, fmt);
86 ctx->log_fn(ctx, level, fmt, args);
87 va_end(args);
88 }
89
90 char *
xkb_context_get_buffer(struct xkb_context * ctx,size_t size)91 xkb_context_get_buffer(struct xkb_context *ctx, size_t size)
92 {
93 char *rtrn;
94
95 if (size >= sizeof(ctx->text_buffer))
96 return NULL;
97
98 if (sizeof(ctx->text_buffer) - ctx->text_next <= size)
99 ctx->text_next = 0;
100
101 rtrn = &ctx->text_buffer[ctx->text_next];
102 ctx->text_next += size;
103
104 return rtrn;
105 }
106
107 #ifndef DEFAULT_XKB_VARIANT
108 #define DEFAULT_XKB_VARIANT NULL
109 #endif
110
111 #ifndef DEFAULT_XKB_OPTIONS
112 #define DEFAULT_XKB_OPTIONS NULL
113 #endif
114
115 static const char *
xkb_context_get_default_rules(struct xkb_context * ctx)116 xkb_context_get_default_rules(struct xkb_context *ctx)
117 {
118 const char *env = NULL;
119
120 if (ctx->use_environment_names)
121 env = secure_getenv("XKB_DEFAULT_RULES");
122
123 return env ? env : DEFAULT_XKB_RULES;
124 }
125
126 static const char *
xkb_context_get_default_model(struct xkb_context * ctx)127 xkb_context_get_default_model(struct xkb_context *ctx)
128 {
129 const char *env = NULL;
130
131 if (ctx->use_environment_names)
132 env = secure_getenv("XKB_DEFAULT_MODEL");
133
134 return env ? env : DEFAULT_XKB_MODEL;
135 }
136
137 static const char *
xkb_context_get_default_layout(struct xkb_context * ctx)138 xkb_context_get_default_layout(struct xkb_context *ctx)
139 {
140 const char *env = NULL;
141
142 if (ctx->use_environment_names)
143 env = secure_getenv("XKB_DEFAULT_LAYOUT");
144
145 return env ? env : DEFAULT_XKB_LAYOUT;
146 }
147
148 static const char *
xkb_context_get_default_variant(struct xkb_context * ctx)149 xkb_context_get_default_variant(struct xkb_context *ctx)
150 {
151 const char *env = NULL;
152 const char *layout = secure_getenv("XKB_DEFAULT_LAYOUT");
153
154 /* We don't want to inherit the variant if they haven't also set a
155 * layout, since they're so closely paired. */
156 if (layout && ctx->use_environment_names)
157 env = secure_getenv("XKB_DEFAULT_VARIANT");
158
159 return env ? env : DEFAULT_XKB_VARIANT;
160 }
161
162 static const char *
xkb_context_get_default_options(struct xkb_context * ctx)163 xkb_context_get_default_options(struct xkb_context *ctx)
164 {
165 const char *env = NULL;
166
167 if (ctx->use_environment_names)
168 env = secure_getenv("XKB_DEFAULT_OPTIONS");
169
170 return env ? env : DEFAULT_XKB_OPTIONS;
171 }
172
173 void
xkb_context_sanitize_rule_names(struct xkb_context * ctx,struct xkb_rule_names * rmlvo)174 xkb_context_sanitize_rule_names(struct xkb_context *ctx,
175 struct xkb_rule_names *rmlvo)
176 {
177 if (isempty(rmlvo->rules))
178 rmlvo->rules = xkb_context_get_default_rules(ctx);
179 if (isempty(rmlvo->model))
180 rmlvo->model = xkb_context_get_default_model(ctx);
181 /* Layout and variant are tied together, so don't try to use one from
182 * the caller and one from the environment. */
183 if (isempty(rmlvo->layout)) {
184 rmlvo->layout = xkb_context_get_default_layout(ctx);
185 rmlvo->variant = xkb_context_get_default_variant(ctx);
186 }
187 /* Options can be empty, so respect that if passed in. */
188 if (rmlvo->options == NULL)
189 rmlvo->options = xkb_context_get_default_options(ctx);
190 }
191