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time: vfmt time/parse.v

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This commit is contained in:
Alexander Medvednikov 2020-10-08 16:59:43 +02:00
parent c3626bf2e6
commit 1123b8259a
1 changed files with 23 additions and 35 deletions
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58
vlib/time/parse.v
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@ -18,7 +18,6 @@ pub fn parse(s string) ?Time {
hour := hms[0][1..] hour := hms[0][1..]
minute := hms[1] minute := hms[1]
second := hms[2] second := hms[2]
res := new_time(Time{ res := new_time(Time{
year: ymd[0].int() year: ymd[0].int()
month: ymd[1].int() month: ymd[1].int()
@ -41,10 +40,11 @@ pub fn parse_rfc2822(s string) ?Time {
} }
mm := pos / 3 + 1 mm := pos / 3 + 1
mut tmstr := byteptr(0) mut tmstr := byteptr(0)
unsafe { tmstr = malloc(s.len * 2) } unsafe {
count := unsafe {C.snprintf(charptr(tmstr), (s.len * 2), '%s-%02d-%s %s', fields[3].str, mm, tmstr = malloc(s.len * 2)
fields[1].str, fields[4].str)} }
count := unsafe {C.snprintf(charptr(tmstr), (s.len * 2), '%s-%02d-%s %s', fields[3].str,
mm, fields[1].str, fields[4].str)}
return parse(tos(tmstr, count)) return parse(tos(tmstr, count))
} }
@ -52,38 +52,31 @@ pub fn parse_rfc2822(s string) ?Time {
// the fraction part is difference in milli seconds and the last part is offset // the fraction part is difference in milli seconds and the last part is offset
// from UTC time and can be both +/- HH:mm // from UTC time and can be both +/- HH:mm
// remarks: not all iso8601 is supported only the 'yyyy-MM-ddTHH:mm:ss.dddddd+dd:dd' // remarks: not all iso8601 is supported only the 'yyyy-MM-ddTHH:mm:ss.dddddd+dd:dd'
// also checks and support for leapseconds should be added in future PR // also checks and support for leapseconds should be added in future PR
pub fn parse_iso8601(s string) ?Time { pub fn parse_iso8601(s string) ?Time {
year := 0
year := 0 month := 0
month := 0 day := 0
day := 0 hour := 0
hour := 0 minute := 0
minute := 0 second := 0
second := 0 mic_second := 0
mic_second := 0 time_char := `a`
time_char := `a` plus_min := `a`
plus_min := `a`
offset_hour := 0 offset_hour := 0
offset_min := 0 offset_min := 0
count := unsafe {C.sscanf(charptr(s.str), '%4d-%2d-%2d%c%2d:%2d:%2d.%6d%c%2d:%2d',
count := unsafe {C.sscanf(charptr(s.str), "%4d-%2d-%2d%c%2d:%2d:%2d.%6d%c%2d:%2d", &year, &month, &day, &year, &month, &day, &time_char, &hour, &minute, &second, &mic_second, &plus_min, &offset_hour,
&time_char, &hour, &minute, &offset_min)}
&second, &mic_second, &plus_min,
&offset_hour, &offset_min)}
if count != 11 { if count != 11 {
return error('Invalid 8601 format') return error('Invalid 8601 format')
} }
if time_char != `T` && time_char != ` ` { if time_char != `T` && time_char != ` ` {
return error('Invalid 8601 format, expected space or `T` as time separator') return error('Invalid 8601 format, expected space or `T` as time separator')
} }
if plus_min != `+` && plus_min != `-` { if plus_min != `+` && plus_min != `-` {
return error('Invalid 8601 format, expected `+` or `-` as time separator' ) return error('Invalid 8601 format, expected `+` or `-` as time separator')
} }
mut t := new_time(Time{ mut t := new_time(Time{
year: year year: year
month: month month: month
@ -93,17 +86,14 @@ pub fn parse_iso8601(s string) ?Time {
second: second second: second
microsecond: mic_second microsecond: mic_second
}) })
mut unix_time := t.unix
mut unix_time := t.unix
mut unix_offset := int(0) mut unix_offset := int(0)
if offset_hour > 0 { if offset_hour > 0 {
unix_offset += 3600*offset_hour unix_offset += 3600 * offset_hour
} }
if offset_min > 0 { if offset_min > 0 {
unix_offset += 60*offset_min unix_offset += 60 * offset_min
} }
if unix_offset != 0 { if unix_offset != 0 {
if plus_min == `+` { if plus_min == `+` {
unix_time -= u64(unix_offset) unix_time -= u64(unix_offset)
@ -112,8 +102,6 @@ pub fn parse_iso8601(s string) ?Time {
} }
t = unix2(int(unix_time), t.microsecond) t = unix2(int(unix_time), t.microsecond)
} }
// Convert the time to local time // Convert the time to local time
return to_local_time(t) return to_local_time(t)
} }