libxkbcommon/src/context-priv.c

199 lines
5.6 KiB
C

/*
* Copyright © 2012 Intel Corporation
* Copyright © 2012 Ran Benita
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Author: Daniel Stone <daniel@fooishbar.org>
*/
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include "xkbcommon/xkbcommon.h"
#include "utils.h"
#include "context.h"
char *
xkb_context_getenv(struct xkb_context *ctx, const char *name)
{
if (ctx->use_secure_getenv) {
return secure_getenv(name);
} else {
return getenv(name);
}
}
unsigned int
xkb_context_num_failed_include_paths(struct xkb_context *ctx)
{
return darray_size(ctx->failed_includes);
}
const char *
xkb_context_failed_include_path_get(struct xkb_context *ctx,
unsigned int idx)
{
if (idx >= xkb_context_num_failed_include_paths(ctx))
return NULL;
return darray_item(ctx->failed_includes, idx);
}
xkb_atom_t
xkb_atom_lookup(struct xkb_context *ctx, const char *string)
{
return atom_intern(ctx->atom_table, string, strlen(string), false);
}
xkb_atom_t
xkb_atom_intern(struct xkb_context *ctx, const char *string, size_t len)
{
return atom_intern(ctx->atom_table, string, len, true);
}
const char *
xkb_atom_text(struct xkb_context *ctx, xkb_atom_t atom)
{
return atom_text(ctx->atom_table, atom);
}
void
xkb_log(struct xkb_context *ctx, enum xkb_log_level level, int verbosity,
const char *fmt, ...)
{
va_list args;
if (ctx->log_level < level || ctx->log_verbosity < verbosity)
return;
va_start(args, fmt);
ctx->log_fn(ctx, level, fmt, args);
va_end(args);
}
char *
xkb_context_get_buffer(struct xkb_context *ctx, size_t size)
{
char *rtrn;
if (size >= sizeof(ctx->text_buffer))
return NULL;
if (sizeof(ctx->text_buffer) - ctx->text_next <= size)
ctx->text_next = 0;
rtrn = &ctx->text_buffer[ctx->text_next];
ctx->text_next += size;
return rtrn;
}
static const char *
xkb_context_get_default_rules(struct xkb_context *ctx)
{
const char *env = NULL;
if (ctx->use_environment_names)
env = xkb_context_getenv(ctx, "XKB_DEFAULT_RULES");
return env ? env : DEFAULT_XKB_RULES;
}
static const char *
xkb_context_get_default_model(struct xkb_context *ctx)
{
const char *env = NULL;
if (ctx->use_environment_names)
env = xkb_context_getenv(ctx, "XKB_DEFAULT_MODEL");
return env ? env : DEFAULT_XKB_MODEL;
}
static const char *
xkb_context_get_default_layout(struct xkb_context *ctx)
{
const char *env = NULL;
if (ctx->use_environment_names)
env = xkb_context_getenv(ctx, "XKB_DEFAULT_LAYOUT");
return env ? env : DEFAULT_XKB_LAYOUT;
}
static const char *
xkb_context_get_default_variant(struct xkb_context *ctx)
{
const char *env = NULL;
const char *layout = xkb_context_getenv(ctx, "XKB_DEFAULT_LAYOUT");
/* We don't want to inherit the variant if they haven't also set a
* layout, since they're so closely paired. */
if (layout && ctx->use_environment_names)
env = xkb_context_getenv(ctx, "XKB_DEFAULT_VARIANT");
return env ? env : DEFAULT_XKB_VARIANT;
}
static const char *
xkb_context_get_default_options(struct xkb_context *ctx)
{
const char *env = NULL;
if (ctx->use_environment_names)
env = xkb_context_getenv(ctx, "XKB_DEFAULT_OPTIONS");
return env ? env : DEFAULT_XKB_OPTIONS;
}
void
xkb_context_sanitize_rule_names(struct xkb_context *ctx,
struct xkb_rule_names *rmlvo)
{
if (isempty(rmlvo->rules))
rmlvo->rules = xkb_context_get_default_rules(ctx);
if (isempty(rmlvo->model))
rmlvo->model = xkb_context_get_default_model(ctx);
/* Layout and variant are tied together, so don't try to use one from
* the caller and one from the environment. */
if (isempty(rmlvo->layout)) {
rmlvo->layout = xkb_context_get_default_layout(ctx);
if (!isempty(rmlvo->variant)) {
const char *variant = xkb_context_get_default_variant(ctx);
log_warn(ctx,
XKB_LOG_MESSAGE_NO_ID,
"Layout not provided, but variant set to \"%s\": "
"ignoring variant and using defaults for both: "
"layout=\"%s\", variant=\"%s\".\n",
rmlvo->variant,
rmlvo->layout,
variant ? variant : "");
}
rmlvo->variant = xkb_context_get_default_variant(ctx);
}
/* Options can be empty, so respect that if passed in. */
if (rmlvo->options == NULL)
rmlvo->options = xkb_context_get_default_options(ctx);
}