1 files changed, 492 insertions, 0 deletions
diff --git a/src/3rdparty/xkbcommon/src/context.c b/src/3rdparty/xkbcommon/src/context.c
new file mode 100644
index 0000000000..8d56487004
--- /dev/null
+++ b/src/3rdparty/xkbcommon/src/context.c
@@ -0,0 +1,492 @@
+/*
+ * 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 <sys/types.h>
+#include <sys/stat.h>
+#include <ctype.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "xkbcommon/xkbcommon.h"
+#include "utils.h"
+#include "context.h"
+
+struct xkb_context {
+    int refcnt;
+
+    ATTR_PRINTF(3, 0) void (*log_fn)(struct xkb_context *ctx,
+                                     enum xkb_log_level level,
+                                     const char *fmt, va_list args);
+    enum xkb_log_level log_level;
+    int log_verbosity;
+    void *user_data;
+
+    struct xkb_rule_names names_dflt;
+
+    darray(char *) includes;
+    darray(char *) failed_includes;
+
+    struct atom_table *atom_table;
+
+    /* Buffer for the *Text() functions. */
+    char text_buffer[2048];
+    size_t text_next;
+
+    unsigned int use_environment_names : 1;
+};
+
+/**
+ * Append one directory to the context's include path.
+ */
+XKB_EXPORT int
+xkb_context_include_path_append(struct xkb_context *ctx, const char *path)
+{
+    struct stat stat_buf;
+    int err;
+    char *tmp;
+
+    tmp = strdup(path);
+    if (!tmp)
+        goto err;
+
+    err = stat(path, &stat_buf);
+    if (err != 0)
+        goto err;
+    if (!S_ISDIR(stat_buf.st_mode))
+        goto err;
+
+#if defined(HAVE_EACCESS)
+    if (eaccess(path, R_OK | X_OK) != 0)
+        goto err;
+#elif defined(HAVE_EUIDACCESS)
+    if (euidaccess(path, R_OK | X_OK) != 0)
+        goto err;
+#endif
+
+    darray_append(ctx->includes, tmp);
+    return 1;
+
+err:
+    darray_append(ctx->failed_includes, tmp);
+    return 0;
+}
+
+/**
+ * Append the default include directories to the context.
+ */
+XKB_EXPORT int
+xkb_context_include_path_append_default(struct xkb_context *ctx)
+{
+    const char *home;
+    char *user_path;
+    int err;
+    int ret = 0;
+
+    ret |= xkb_context_include_path_append(ctx, DFLT_XKB_CONFIG_ROOT);
+
+    home = getenv("HOME");
+    if (!home)
+        return ret;
+    err = asprintf(&user_path, "%s/.xkb", home);
+    if (err <= 0)
+        return ret;
+    ret |= xkb_context_include_path_append(ctx, user_path);
+    free(user_path);
+
+    return ret;
+}
+
+/**
+ * Remove all entries in the context's include path.
+ */
+XKB_EXPORT void
+xkb_context_include_path_clear(struct xkb_context *ctx)
+{
+    char **path;
+
+    darray_foreach(path, ctx->includes)
+        free(*path);
+    darray_free(ctx->includes);
+
+    darray_foreach(path, ctx->failed_includes)
+        free(*path);
+    darray_free(ctx->failed_includes);
+}
+
+/**
+ * xkb_context_include_path_clear() + xkb_context_include_path_append_default()
+ */
+XKB_EXPORT int
+xkb_context_include_path_reset_defaults(struct xkb_context *ctx)
+{
+    xkb_context_include_path_clear(ctx);
+    return xkb_context_include_path_append_default(ctx);
+}
+
+/**
+ * Returns the number of entries in the context's include path.
+ */
+XKB_EXPORT unsigned int
+xkb_context_num_include_paths(struct xkb_context *ctx)
+{
+    return darray_size(ctx->includes);
+}
+
+unsigned int
+xkb_context_num_failed_include_paths(struct xkb_context *ctx)
+{
+    return darray_size(ctx->failed_includes);
+}
+
+/**
+ * Returns the given entry in the context's include path, or NULL if an
+ * invalid index is passed.
+ */
+XKB_EXPORT const char *
+xkb_context_include_path_get(struct xkb_context *ctx, unsigned int idx)
+{
+    if (idx >= xkb_context_num_include_paths(ctx))
+        return NULL;
+
+    return darray_item(ctx->includes, idx);
+}
+
+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);
+}
+
+/**
+ * Take a new reference on the context.
+ */
+XKB_EXPORT struct xkb_context *
+xkb_context_ref(struct xkb_context *ctx)
+{
+    ctx->refcnt++;
+    return ctx;
+}
+
+/**
+ * Drop an existing reference on the context, and free it if the refcnt is
+ * now 0.
+ */
+XKB_EXPORT void
+xkb_context_unref(struct xkb_context *ctx)
+{
+    if (!ctx || --ctx->refcnt > 0)
+        return;
+
+    xkb_context_include_path_clear(ctx);
+    atom_table_free(ctx->atom_table);
+    free(ctx);
+}
+
+static const char *
+log_level_to_prefix(enum xkb_log_level level)
+{
+    switch (level) {
+    case XKB_LOG_LEVEL_DEBUG:
+        return "Debug:";
+    case XKB_LOG_LEVEL_INFO:
+        return "Info:";
+    case XKB_LOG_LEVEL_WARNING:
+        return "Warning:";
+    case XKB_LOG_LEVEL_ERROR:
+        return "Error:";
+    case XKB_LOG_LEVEL_CRITICAL:
+        return "Critical:";
+    default:
+        return NULL;
+    }
+}
+
+ATTR_PRINTF(3, 0) static void
+default_log_fn(struct xkb_context *ctx, enum xkb_log_level level,
+               const char *fmt, va_list args)
+{
+    const char *prefix = log_level_to_prefix(level);
+
+    if (prefix)
+        fprintf(stderr, "%-10s", prefix);
+    vfprintf(stderr, fmt, args);
+}
+
+static enum xkb_log_level
+log_level(const char *level) {
+    char *endptr;
+    enum xkb_log_level lvl;
+
+    errno = 0;
+    lvl = strtol(level, &endptr, 10);
+    if (errno == 0 && (endptr[0] == '\0' || isspace(endptr[0])))
+        return lvl;
+    if (istreq_prefix("crit", level))
+        return XKB_LOG_LEVEL_CRITICAL;
+    if (istreq_prefix("err", level))
+        return XKB_LOG_LEVEL_ERROR;
+    if (istreq_prefix("warn", level))
+        return XKB_LOG_LEVEL_WARNING;
+    if (istreq_prefix("info", level))
+        return XKB_LOG_LEVEL_INFO;
+    if (istreq_prefix("debug", level) || istreq_prefix("dbg", level))
+        return XKB_LOG_LEVEL_DEBUG;
+
+    return XKB_LOG_LEVEL_ERROR;
+}
+
+static int
+log_verbosity(const char *verbosity) {
+    char *endptr;
+    int v;
+
+    errno = 0;
+    v = strtol(verbosity, &endptr, 10);
+    if (errno == 0)
+        return v;
+
+    return 0;
+}
+
+#ifndef DEFAULT_XKB_VARIANT
+#define DEFAULT_XKB_VARIANT NULL
+#endif
+
+#ifndef DEFAULT_XKB_OPTIONS
+#define DEFAULT_XKB_OPTIONS NULL
+#endif
+
+/**
+ * Create a new context.
+ */
+XKB_EXPORT struct xkb_context *
+xkb_context_new(enum xkb_context_flags flags)
+{
+    const char *env;
+    struct xkb_context *ctx = calloc(1, sizeof(*ctx));
+
+    if (!ctx)
+        return NULL;
+
+    ctx->refcnt = 1;
+    ctx->log_fn = default_log_fn;
+    ctx->log_level = XKB_LOG_LEVEL_ERROR;
+    ctx->log_verbosity = 0;
+
+    /* Environment overwrites defaults. */
+    env = getenv("XKB_LOG_LEVEL");
+    if (env)
+        xkb_context_set_log_level(ctx, log_level(env));
+
+    env = getenv("XKB_LOG_VERBOSITY");
+    if (env)
+        xkb_context_set_log_verbosity(ctx, log_verbosity(env));
+
+    if (!(flags & XKB_CONTEXT_NO_DEFAULT_INCLUDES) &&
+        !xkb_context_include_path_append_default(ctx)) {
+        log_err(ctx, "failed to add default include path %s\n",
+                DFLT_XKB_CONFIG_ROOT);
+        xkb_context_unref(ctx);
+        return NULL;
+    }
+
+    ctx->use_environment_names = !(flags & XKB_CONTEXT_NO_ENVIRONMENT_NAMES);
+
+    ctx->atom_table = atom_table_new();
+    if (!ctx->atom_table) {
+        xkb_context_unref(ctx);
+        return NULL;
+    }
+
+    return ctx;
+}
+
+xkb_atom_t
+xkb_atom_lookup(struct xkb_context *ctx, const char *string)
+{
+    return atom_lookup(ctx->atom_table, string);
+}
+
+xkb_atom_t
+xkb_atom_intern(struct xkb_context *ctx, const char *string)
+{
+    return atom_intern(ctx->atom_table, string, false);
+}
+
+xkb_atom_t
+xkb_atom_steal(struct xkb_context *ctx, char *string)
+{
+    return atom_intern(ctx->atom_table, string, true);
+}
+
+char *
+xkb_atom_strdup(struct xkb_context *ctx, xkb_atom_t atom)
+{
+    return atom_strdup(ctx->atom_table, atom);
+}
+
+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,
+        const char *fmt, ...)
+{
+    va_list args;
+
+    va_start(args, fmt);
+    ctx->log_fn(ctx, level, fmt, args);
+    va_end(args);
+}
+
+XKB_EXPORT void
+xkb_context_set_log_fn(struct xkb_context *ctx,
+                       void (*log_fn)(struct xkb_context *ctx,
+                                      enum xkb_log_level level,
+                                      const char *fmt, va_list args))
+{
+    ctx->log_fn = (log_fn ? log_fn : default_log_fn);
+}
+
+XKB_EXPORT enum xkb_log_level
+xkb_context_get_log_level(struct xkb_context *ctx)
+{
+    return ctx->log_level;
+}
+
+XKB_EXPORT void
+xkb_context_set_log_level(struct xkb_context *ctx, enum xkb_log_level level)
+{
+    ctx->log_level = level;
+}
+
+XKB_EXPORT int
+xkb_context_get_log_verbosity(struct xkb_context *ctx)
+{
+    return ctx->log_verbosity;
+}
+
+XKB_EXPORT void
+xkb_context_set_log_verbosity(struct xkb_context *ctx, int verbosity)
+{
+    ctx->log_verbosity = verbosity;
+}
+
+XKB_EXPORT void *
+xkb_context_get_user_data(struct xkb_context *ctx)
+{
+    if (ctx)
+        return ctx->user_data;
+    return NULL;
+}
+
+XKB_EXPORT void
+xkb_context_set_user_data(struct xkb_context *ctx, void *user_data)
+{
+    ctx->user_data = user_data;
+}
+
+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;
+}
+
+const char *
+xkb_context_get_default_rules(struct xkb_context *ctx)
+{
+    const char *env = NULL;
+
+    if (ctx->use_environment_names)
+        env = getenv("XKB_DEFAULT_RULES");
+
+    return env ? env : DEFAULT_XKB_RULES;
+}
+
+const char *
+xkb_context_get_default_model(struct xkb_context *ctx)
+{
+    const char *env = NULL;
+
+    if (ctx->use_environment_names)
+        env = getenv("XKB_DEFAULT_MODEL");
+
+    return env ? env : DEFAULT_XKB_MODEL;
+}
+
+const char *
+xkb_context_get_default_layout(struct xkb_context *ctx)
+{
+    const char *env = NULL;
+
+    if (ctx->use_environment_names)
+        env = getenv("XKB_DEFAULT_LAYOUT");
+
+    return env ? env : DEFAULT_XKB_LAYOUT;
+}
+
+const char *
+xkb_context_get_default_variant(struct xkb_context *ctx)
+{
+    const char *env = NULL;
+    const char *layout = getenv("XKB_DEFAULT_VARIANT");
+
+    /* 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 = getenv("XKB_DEFAULT_VARIANT");
+
+    return env ? env : DEFAULT_XKB_VARIANT;
+}
+
+const char *
+xkb_context_get_default_options(struct xkb_context *ctx)
+{
+    const char *env = NULL;
+
+    if (ctx->use_environment_names)
+        env = getenv("XKB_DEFAULT_OPTIONS");
+
+    return env ? env : DEFAULT_XKB_OPTIONS;
+}