diff options
Diffstat (limited to 'src/3rdparty/xkbcommon/src/context.c')
-rw-r--r-- | src/3rdparty/xkbcommon/src/context.c | 492 |
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; +} |