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Implement proper time zone support

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Cosmopolitan now supports 104 time zones. They're embedded inside any
binary that links the localtime() function. Doing so adds about 100kb
to the binary size. This change also gets time zones working properly
on Windows for the first time. It's not needed to have /etc/localtime
exist on Windows, since we can get this information from WIN32. We're
also now updated to the latest version of Paul Eggert's TZ library.
This commit is contained in:
Justine Tunney 2024-05-04 23:05:36 -07:00
parent d5ebb1fa5b
commit b0df6c1fce
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
627 changed files with 3052 additions and 2077 deletions
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8
libc/nt/enum/timezoneid.h Normal file
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@ -0,0 +1,8 @@
#ifndef COSMOPOLITAN_LIBC_NT_ENUM_TIMEZONEID_H_
#define COSMOPOLITAN_LIBC_NT_ENUM_TIMEZONEID_H_
#define kNtTimeZoneIdUnknown 0
#define kNtTimeZoneIdStandard 1
#define kNtTimeZoneIdDaylight 2
#endif /* COSMOPOLITAN_LIBC_NT_ENUM_TIMEZONEID_H_ */

20
libc/nt/kernel32/GetDynamicTimeZoneInformation.S Normal file
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@ -0,0 +1,20 @@
#include "libc/nt/codegen.h"
.imp kernel32,__imp_GetDynamicTimeZoneInformation,GetDynamicTimeZoneInformation
.text.windows
.ftrace1
GetDynamicTimeZoneInformation:
.ftrace2
#ifdef __x86_64__
push %rbp
mov %rsp,%rbp
mov %rdi,%rcx
sub $32,%rsp
call *__imp_GetDynamicTimeZoneInformation(%rip)
leave
#elif defined(__aarch64__)
mov x0,#0
#endif
ret
.endfn GetDynamicTimeZoneInformation,globl
.previous

20
libc/nt/kernel32/GetTimeZoneInformation.S Normal file
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@ -0,0 +1,20 @@
#include "libc/nt/codegen.h"
.imp kernel32,__imp_GetTimeZoneInformation,GetTimeZoneInformation
.text.windows
.ftrace1
GetTimeZoneInformation:
.ftrace2
#ifdef __x86_64__
push %rbp
mov %rsp,%rbp
mov %rdi,%rcx
sub $32,%rsp
call *__imp_GetTimeZoneInformation(%rip)
leave
#elif defined(__aarch64__)
mov x0,#0
#endif
ret
.endfn GetTimeZoneInformation,globl
.previous

2
libc/nt/master.sh
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@ -168,6 +168,8 @@ imp 'GetSystemTimePreciseAsFileTime' GetSystemTimePreciseAsFileTime kernel3
imp 'GetSystemTimes' GetSystemTimes kernel32 3
imp 'GetTempPath' GetTempPathW kernel32 2
imp 'GetTempPathA' GetTempPathA kernel32 2
imp 'GetDynamicTimeZoneInformation' GetDynamicTimeZoneInformation kernel32 1
imp 'GetTimeZoneInformation' GetTimeZoneInformation kernel32 1
imp 'GetThreadContext' GetThreadContext kernel32 2
imp 'GetThreadDescription' GetThreadDescription kernel32 2
imp 'GetThreadIOPendingFlag' GetThreadIOPendingFlag kernel32 2

17
libc/nt/struct/dynamictimezoneinformation.h Normal file
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@ -0,0 +1,17 @@
#ifndef COSMOPOLITAN_LIBC_NT_STRUCT_DYNAMICTIMEZONEINFORMATION_H_
#define COSMOPOLITAN_LIBC_NT_STRUCT_DYNAMICTIMEZONEINFORMATION_H_
#include "libc/nt/struct/systemtime.h"
struct NtDynamicTimeZoneInformation {
int32_t Bias;
char16_t StandardName[32];
struct NtSystemTime StandardDate;
int32_t StandardBias;
char16_t DaylightName[32];
struct NtSystemTime DaylightDate;
int32_t DaylightBias;
char16_t TimeZoneKeyName[128];
bool32 DynamicDaylightTimeDisabled;
};
#endif /* COSMOPOLITAN_LIBC_NT_STRUCT_DYNAMICTIMEZONEINFORMATION_H_ */

15
libc/nt/struct/timezoneinformation.h Normal file
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@ -0,0 +1,15 @@
#ifndef COSMOPOLITAN_LIBC_NT_STRUCT_TIMEZONEINFORMATION_H_
#define COSMOPOLITAN_LIBC_NT_STRUCT_TIMEZONEINFORMATION_H_
#include "libc/nt/struct/systemtime.h"
struct NtTimeZoneInformation {
int Bias; /* in minutes e.g. +480 for -8:00 */
char16_t StandardName[32]; /* e.g. "Pacific Standard Time" */
struct NtSystemTime StandardDate;
int StandardBias;
char16_t DaylightName[32]; /* e.g. "Pacific Daylight Time" */
struct NtSystemTime DaylightDate;
int DaylightBias; /* e.g. -60 */
};
#endif /* COSMOPOLITAN_LIBC_NT_STRUCT_TIMEZONEINFORMATION_H_ */

37
libc/nt/time.h Normal file
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#ifndef COSMOPOLITAN_LIBC_NT_TIME_H_
#define COSMOPOLITAN_LIBC_NT_TIME_H_
#include "libc/nt/struct/dynamictimezoneinformation.h"
#include "libc/nt/struct/timezoneinformation.h"
COSMOPOLITAN_C_START_
/* ░░░░
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╔────────────────────────────────────────────────────────────────▀▀▀─────────│─╗
│ cosmopolitan § new technology » time ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/
uint32_t GetTimeZoneInformation(
struct NtTimeZoneInformation *out_lpTimeZoneInformation);
uint32_t GetDynamicTimeZoneInformation(
struct NtDynamicTimeZoneInformation *out_lpTimeZoneInformation);
COSMOPOLITAN_C_END_
#endif /* COSMOPOLITAN_LIBC_NT_TIME_H_ */