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[locale] add functions for locale mapping

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* function to map short language strings ("en", ...) to a codepage
* function to get a default keyboard layout for a codepage
* function to list supported codepages
This commit is contained in:
akallabeth 2024-06-20 08:46:17 +02:00
parent 5dc80c9183
commit e03a6a269e
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GPG Key ID: A49454A3FC909FD5
2 changed files with 97 additions and 47 deletions
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16
include/freerdp/locale/locale.h
View File

@ -234,15 +234,31 @@
#define YORUBA 0x046A
#define ZULU 0x0435
#define LOCALE_LANGUAGE_LEN 6
#define LOCALE_COUNTRY_LEN 10
#ifdef __cplusplus
extern "C"
{
#endif
typedef struct
{
char language[LOCALE_LANGUAGE_LEN]; /* Two or three letter language code */
char country[LOCALE_COUNTRY_LEN]; /* Two or three letter country code (Sometimes with Cyrl_
prefix) */
DWORD code; /* 32-bit unsigned integer corresponding to the locale */
} SYSTEM_LOCALE;
FREERDP_API DWORD freerdp_get_system_locale_id(void);
FREERDP_API const char* freerdp_get_system_locale_name_from_id(DWORD localeId);
FREERDP_API int freerdp_detect_keyboard_layout_from_system_locale(DWORD* keyboardLayoutId);
FREERDP_API const SYSTEM_LOCALE* freerdp_get_system_locale_list(size_t* count);
FREERDP_API INT64 freerdp_get_locale_id_from_string(const char* locale);
FREERDP_API DWORD freerdp_get_keyboard_default_layout_for_locale(DWORD locale);
#ifdef __cplusplus
}
#endif

128
libfreerdp/locale/locale.c
View File

@ -38,17 +38,6 @@
#include <freerdp/locale/locale.h>
#define LOCALE_LANGUAGE_LEN 6
#define LOCALE_COUNTRY_LEN 10
typedef struct
{
char language[LOCALE_LANGUAGE_LEN]; /* Two or three letter language code */
char country[LOCALE_COUNTRY_LEN]; /* Two or three letter country code (Sometimes with Cyrl_
prefix) */
DWORD code; /* 32-bit unsigned integer corresponding to the locale */
} SYSTEM_LOCALE;
/*
* Refer to MSDN article "Locale Identifier Constants and Strings":
* http://msdn.microsoft.com/en-us/library/ms776260.aspx
@ -778,40 +767,26 @@ DWORD freerdp_get_system_locale_id(void)
return 0;
}
const char* freerdp_get_system_locale_name_from_id(DWORD localeId)
static const SYSTEM_LOCALE* get_locale_from_str(const char* name)
{
for (size_t index = 0; index < ARRAYSIZE(LOCALE_NAME_TABLE); index++)
for (size_t i = 0; i < ARRAYSIZE(SYSTEM_LOCALE_TABLE); i++)
{
const LOCALE_NAME* const current = &LOCALE_NAME_TABLE[index];
char buffer[LOCALE_LANGUAGE_LEN + LOCALE_COUNTRY_LEN + 2] = { 0 };
const SYSTEM_LOCALE* current = &SYSTEM_LOCALE_TABLE[i];
if (localeId == current->localeId)
return current->name;
_snprintf(buffer, sizeof(buffer), "%s_%s", current->language, current->country);
/* full match, e.g. en_US */
if ((strcmp(name, buffer) == 0))
return current;
/* simple language only match e.g. 'en' */
else if ((strcmp(name, current->language) == 0))
return current;
}
return NULL;
}
int freerdp_detect_keyboard_layout_from_system_locale(DWORD* keyboardLayoutId)
static INT64 get_layout_from_locale(const SYSTEM_LOCALE* locale)
{
char language[LOCALE_LANGUAGE_LEN] = { 0 };
char country[LOCALE_COUNTRY_LEN] = { 0 };
freerdp_get_system_language_and_country_codes(language, ARRAYSIZE(language), country,
ARRAYSIZE(country));
if ((strcmp(language, "C") == 0) || (strcmp(language, "POSIX") == 0))
{
*keyboardLayoutId = ENGLISH_UNITED_STATES; /* U.S. Keyboard Layout */
return 0;
}
const SYSTEM_LOCALE* locale = freerdp_detect_system_locale();
if (!locale)
return -1;
DEBUG_KBD("Found locale : %s_%s", locale->language, locale->country);
for (size_t i = 0; i < ARRAYSIZE(LOCALE_KEYBOARD_LAYOUTS_TABLE); i++)
{
const LOCALE_KEYBOARD_LAYOUTS* const current = &LOCALE_KEYBOARD_LAYOUTS_TABLE[i];
@ -834,22 +809,81 @@ int freerdp_detect_keyboard_layout_from_system_locale(DWORD* keyboardLayoutId)
*/
if (j >= 1)
{
*keyboardLayoutId = ENGLISH_UNITED_STATES;
return 0;
}
return ENGLISH_UNITED_STATES;
/* No more keyboard layouts */
break;
}
else
{
*keyboardLayoutId = current->keyboardLayouts[j];
return 0;
}
return current->keyboardLayouts[j];
}
}
}
return -1; /* Could not detect the current keyboard layout from locale */
return -1;
}
const char* freerdp_get_system_locale_name_from_id(DWORD localeId)
{
for (size_t index = 0; index < ARRAYSIZE(LOCALE_NAME_TABLE); index++)
{
const LOCALE_NAME* const current = &LOCALE_NAME_TABLE[index];
if (localeId == current->localeId)
return current->name;
}
return NULL;
}
INT64 freerdp_get_locale_id_from_string(const char* locale)
{
const SYSTEM_LOCALE* loc = get_locale_from_str(locale);
if (!loc)
return -1;
return loc->code;
}
int freerdp_detect_keyboard_layout_from_system_locale(DWORD* keyboardLayoutId)
{
char language[LOCALE_LANGUAGE_LEN] = { 0 };
char country[LOCALE_COUNTRY_LEN] = { 0 };
freerdp_get_system_language_and_country_codes(language, ARRAYSIZE(language), country,
ARRAYSIZE(country));
if ((strcmp(language, "C") == 0) || (strcmp(language, "POSIX") == 0))
{
*keyboardLayoutId = ENGLISH_UNITED_STATES; /* U.S. Keyboard Layout */
return 0;
}
const SYSTEM_LOCALE* locale = freerdp_detect_system_locale();
if (!locale)
return -1;
DEBUG_KBD("Found locale : %s_%s", locale->language, locale->country);
INT64 rc = get_layout_from_locale(locale);
if (rc < 0)
return -1; /* Could not detect the current keyboard layout from locale */
*keyboardLayoutId = (DWORD)rc;
return 0;
}
const SYSTEM_LOCALE* freerdp_get_system_locale_list(size_t* count)
{
WINPR_ASSERT(count);
*count = ARRAYSIZE(SYSTEM_LOCALE_TABLE);
return SYSTEM_LOCALE_TABLE;
}
DWORD freerdp_get_keyboard_default_layout_for_locale(DWORD locale)
{
for (size_t x = 0; x < ARRAYSIZE(LOCALE_KEYBOARD_LAYOUTS_TABLE); x++)
{
const LOCALE_KEYBOARD_LAYOUTS* const cur = &LOCALE_KEYBOARD_LAYOUTS_TABLE[x];
if (cur->locale == locale)
return cur->keyboardLayouts[0];
}
return 0;
}