| /* |
| * Copyright © 2014 Ran Benita <ran234@gmail.com> |
| * |
| * 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. |
| */ |
| |
| #include "utils.h" |
| #include "paths.h" |
| |
| enum resolve_name_direction { |
| LEFT_TO_RIGHT, |
| RIGHT_TO_LEFT, |
| }; |
| |
| const char * |
| get_xlocaledir_path(void) |
| { |
| const char *dir = secure_getenv("XLOCALEDIR"); |
| if (!dir) |
| dir = XLOCALEDIR; |
| return dir; |
| } |
| |
| /* |
| * Files like compose.dir have the format LEFT: RIGHT. Lookup @name in |
| * such a file and return its matching value, according to @direction. |
| * @filename is relative to the xlocaledir. |
| */ |
| static char * |
| resolve_name(const char *filename, enum resolve_name_direction direction, |
| const char *name) |
| { |
| int ret; |
| bool ok; |
| const char *xlocaledir; |
| char path[512]; |
| FILE *file; |
| const char *string, *end; |
| size_t string_size; |
| const char *s, *left, *right; |
| char *match; |
| size_t left_len, right_len, name_len; |
| |
| xlocaledir = get_xlocaledir_path(); |
| |
| ret = snprintf(path, sizeof(path), "%s/%s", xlocaledir, filename); |
| if (ret < 0 || (size_t) ret >= sizeof(path)) |
| return false; |
| |
| file = fopen(path, "r"); |
| if (!file) |
| return false; |
| |
| ok = map_file(file, &string, &string_size); |
| fclose(file); |
| if (!ok) |
| return false; |
| |
| s = string; |
| end = string + string_size; |
| name_len = strlen(name); |
| match = NULL; |
| |
| while (s < end) { |
| /* Skip spaces. */ |
| while (s < end && is_space(*s)) |
| s++; |
| |
| /* Skip comments. */ |
| if (s < end && *s == '#') { |
| while (s < end && *s != '\n') |
| s++; |
| continue; |
| } |
| |
| /* Get the left value. */ |
| left = s; |
| while (s < end && !is_space(*s) && *s != ':') |
| s++; |
| left_len = s - left; |
| |
| /* There's an optional colon between left and right. */ |
| if (s < end && *s == ':') |
| s++; |
| |
| /* Skip spaces. */ |
| while (s < end && is_space(*s)) |
| s++; |
| |
| /* Get the right value. */ |
| right = s; |
| while (s < end && !is_space(*s)) |
| s++; |
| right_len = s - right; |
| |
| /* Discard rest of line. */ |
| while (s < end && *s != '\n') |
| s++; |
| |
| if (direction == LEFT_TO_RIGHT) { |
| if (left_len == name_len && memcmp(left, name, left_len) == 0) { |
| match = strndup(right, right_len); |
| break; |
| } |
| } |
| else if (direction == RIGHT_TO_LEFT) { |
| if (right_len == name_len && memcmp(right, name, right_len) == 0) { |
| match = strndup(left, left_len); |
| break; |
| } |
| } |
| } |
| |
| unmap_file(string, string_size); |
| return match; |
| } |
| |
| char * |
| resolve_locale(const char *locale) |
| { |
| char *alias = resolve_name("locale.alias", LEFT_TO_RIGHT, locale); |
| return alias ? alias : strdup(locale); |
| } |
| |
| const char * |
| get_xcomposefile_path(void) |
| { |
| return secure_getenv("XCOMPOSEFILE"); |
| } |
| |
| char * |
| get_home_xcompose_file_path(void) |
| { |
| int ret; |
| const char *home; |
| char *path; |
| |
| home = secure_getenv("HOME"); |
| if (!home) |
| return NULL; |
| |
| ret = asprintf(&path, "%s/.XCompose", home); |
| if (ret <0) |
| return NULL; |
| |
| return path; |
| } |
| |
| char * |
| get_locale_compose_file_path(const char *locale) |
| { |
| int ret; |
| const char *xlocaledir; |
| char *resolved; |
| char *path; |
| |
| /* |
| * WARNING: Random workaround ahead. |
| * |
| * We currently do not support non-UTF-8 Compose files. The C/POSIX |
| * locale is specified to be the default fallback locale with an |
| * ASCII charset. But for some reason the compose.dir points the C |
| * locale to the iso8859-1/Compose file, which is not ASCII but |
| * ISO8859-1. Since this is bound to happen a lot, and since our API |
| * is UTF-8 based, and since 99% of the time a C locale is really just |
| * a misconfiguration for UTF-8, let's do the most helpful thing. |
| */ |
| if (streq(locale, "C")) |
| locale = "en_US.UTF-8"; |
| |
| resolved = resolve_name("compose.dir", RIGHT_TO_LEFT, locale); |
| if (!resolved) |
| return NULL; |
| |
| if (resolved[0] == '/') { |
| path = resolved; |
| } |
| else { |
| xlocaledir = get_xlocaledir_path(); |
| ret = asprintf(&path, "%s/%s", xlocaledir, resolved); |
| free(resolved); |
| if (ret < 0) |
| return NULL; |
| } |
| |
| return path; |
| } |