diff options
Diffstat (limited to 'src/json')
| -rw-r--r-- | src/json/i18n.c | 75 |
1 files changed, 49 insertions, 26 deletions
diff --git a/src/json/i18n.c b/src/json/i18n.c index b92d63ed..1d3076e2 100644 --- a/src/json/i18n.c +++ b/src/json/i18n.c @@ -1,6 +1,6 @@ /* This file is part of TALER - Copyright (C) 2020 Taler Systems SA + Copyright (C) 2020, 2021 Taler Systems SA TALER is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software @@ -24,31 +24,6 @@ #include "taler_json_lib.h" -/** - * Extract a string from @a object under the field @a field, but respecting - * the Taler i18n rules and the language preferences expressed in @a - * language_pattern. - * - * Basically, the @a object may optionally contain a sub-object - * "${field}_i18n" with a map from IETF BCP 47 language tags to a localized - * version of the string. If this map exists and contains an entry that - * matches the @a language pattern, that object (usually a string) is - * returned. If the @a language_pattern does not match any entry, or if the - * i18n sub-object does not exist, we simply return @a field of @a object - * (also usually a string). - * - * If @a object does not have a member @a field we return NULL (error). - * - * @param object the object to extract internationalized - * content from - * @param language_pattern a language preferences string - * like "fr-CH, fr;q=0.9, en;q=0.8, *;q=0.1", following - * https://tools.ietf.org/html/rfc7231#section-5.3.1 - * @param field name of the field to extract - * @return NULL on error, otherwise the member from - * @a object. Note that the reference counter is - * NOT incremented. - */ const json_t * TALER_JSON_extract_i18n (const json_t *object, const char *language_pattern, @@ -92,4 +67,52 @@ TALER_JSON_extract_i18n (const json_t *object, } +bool +TALER_JSON_check_i18n (const json_t *i18n) +{ + const char *field; + json_t *member; + + if (! json_is_object (i18n)) + return false; + json_object_foreach ((json_t *) i18n, field, member) + { + if (! json_is_string (member)) + return false; + /* Field name must be either of format "en_UK" + or just "en"; we do not care about capitalization */ + switch (strlen (field)) + { + case 0: + case 1: + return false; + case 2: + if (! isalpha (field[0])) + return false; + if (! isalpha (field[1])) + return false; + break; + case 3: + case 4: + return false; + case 5: + if (! isalpha (field[0])) + return false; + if (! isalpha (field[1])) + return false; + if ('_' != field[2]) + return false; + if (! isalpha (field[3])) + return false; + if (! isalpha (field[4])) + return false; + break; + default: + return false; + } + } + return true; +} + + /* end of i18n.c */ |