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[njs] Fixed "Date" object string formatting.

Dmitry Volyntsev
November 01, 2019 12:28PM
details: https://hg.nginx.org/njs/rev/ea70e6e7a0b8
branches:
changeset: 1219:ea70e6e7a0b8
user: Dmitry Volyntsev <xeioex@nginx.com>
date: Fri Nov 01 19:26:42 2019 +0300
description:
Fixed "Date" object string formatting.

1) Getting rid of strftime() as it is locale dependent
whereas output should always be in english.

2) Unifying all formatters in a single function.

diffstat:

src/njs_date.c | 331 +++++++++++++++++++++++++---------------------
src/test/njs_unit_test.c | 34 ++++-
2 files changed, 213 insertions(+), 152 deletions(-)

diffs (489 lines):

diff -r 9054169baaaf -r ea70e6e7a0b8 src/njs_date.c
--- a/src/njs_date.c Fri Nov 01 16:02:21 2019 +0300
+++ b/src/njs_date.c Fri Nov 01 19:26:42 2019 +0300
@@ -14,14 +14,19 @@
* FreeBSD and MacOSX timegm() cannot handle years before 1900.
*/

-#define NJS_ISO_DATE_TIME_LEN sizeof("+001970-09-28T12:00:00.000Z")
-
-#define NJS_HTTP_DATE_TIME_LEN sizeof("Mon, 28 Sep 1970 12:00:00 GMT")
-
#define NJS_DATE_TIME_LEN \
sizeof("Mon Sep 28 1970 12:00:00 GMT+0600 (XXXXX)")


+typedef enum {
+ NJS_DATE_FMT_TO_TIME_STRING,
+ NJS_DATE_FMT_TO_DATE_STRING,
+ NJS_DATE_FMT_TO_STRING,
+ NJS_DATE_FMT_TO_UTC_STRING,
+ NJS_DATE_FMT_TO_ISO_STRING,
+} njs_date_fmt_t;
+
+
static double njs_date_string_parse(njs_value_t *date);
static double njs_date_rfc2822_string_parse(struct tm *tm, const u_char *p,
const u_char *end);
@@ -36,7 +41,8 @@ static njs_int_t njs_date_gmtoff_parse(c
static const u_char *njs_date_number_parse(int *value, const u_char *p,
const u_char *end, size_t size);
static int64_t njs_timegm(struct tm *tm);
-static njs_int_t njs_date_string(njs_vm_t *vm, const char *fmt, double time);
+static njs_int_t njs_date_string(njs_vm_t *vm, njs_value_t *retval,
+ njs_date_fmt_t fmt, double time);
static double njs_date_time(struct tm *tm, int64_t ms);
static double njs_date_utc_time(struct tm *tm, double time);

@@ -179,94 +185,94 @@ njs_date_constructor(njs_vm_t *vm, njs_v
njs_date_t *date;
int64_t values[8];

- if (vm->top_frame->ctor) {
-
- if (nargs == 1) {
- time = njs_gettime();
-
- } else if (nargs == 2) {
- if (njs_is_object(&args[1])) {
- if (!njs_is_date(&args[1])) {
- ret = njs_value_to_primitive(vm, &args[1], &args[1], 0);
- if (ret != NJS_OK) {
- return ret;
- }
+ if (!vm->top_frame->ctor) {
+ return njs_date_string(vm, &vm->retval, NJS_DATE_FMT_TO_STRING,
+ njs_gettime());
+ }
+
+ if (nargs == 1) {
+ time = njs_gettime();
+
+ } else if (nargs == 2) {
+ if (njs_is_object(&args[1])) {
+ if (!njs_is_date(&args[1])) {
+ ret = njs_value_to_primitive(vm, &args[1], &args[1], 0);
+ if (njs_slow_path(ret != NJS_OK)) {
+ return ret;
}
}
-
- if (njs_is_date(&args[1])) {
- time = njs_date(&args[1])->time;
-
- } else if (njs_is_string(&args[1])) {
- time = njs_date_string_parse(&args[1]);
-
- } else {
- time = njs_number(&args[1]);
- }
+ }
+
+ if (njs_is_date(&args[1])) {
+ time = njs_date(&args[1])->time;
+
+ } else if (njs_is_string(&args[1])) {
+ time = njs_date_string_parse(&args[1]);

} else {
-
- time = NAN;
-
- njs_memzero(values, 8 * sizeof(int64_t));
-
- /* Day. */
- values[3] = 1;
-
- n = njs_min(8, nargs);
-
- for (i = 1; i < n; i++) {
- if (!njs_is_numeric(&args[i])) {
- ret = njs_value_to_numeric(vm, &args[i], &args[i]);
- if (ret != NJS_OK) {
- return ret;
- }
+ time = njs_number(&args[1]);
+ }
+
+ } else {
+
+ time = NAN;
+
+ njs_memzero(values, 8 * sizeof(int64_t));
+
+ /* Day. */
+ values[3] = 1;
+
+ n = njs_min(8, nargs);
+
+ for (i = 1; i < n; i++) {
+ if (!njs_is_numeric(&args[i])) {
+ ret = njs_value_to_numeric(vm, &args[i], &args[i]);
+ if (njs_slow_path(ret != NJS_OK)) {
+ return ret;
}
-
- num = njs_number(&args[i]);
-
- if (isnan(num) || isinf(num)) {
- goto done;
- }
-
- values[i] = num;
}

- /* Year. */
- if (values[1] >= 0 && values[1] < 100) {
- values[1] += 1900;
+ num = njs_number(&args[i]);
+
+ if (isnan(num) || isinf(num)) {
+ goto done;
}

- day = njs_make_day(values[1], values[2], values[3]);
-
- tm = njs_make_time(values[4], values[5], values[6], values[7]);
-
- time = njs_make_date(day, tm, 1);
+ values[i] = num;
}

- done:
-
- date = njs_mp_alloc(vm->mem_pool, sizeof(njs_date_t));
- if (njs_slow_path(date == NULL)) {
- njs_memory_error(vm);
- return NJS_ERROR;
+ /* Year. */
+ if (values[1] >= 0 && values[1] < 100) {
+ values[1] += 1900;
}

- njs_lvlhsh_init(&date->object.hash);
- njs_lvlhsh_init(&date->object.shared_hash);
- date->object.type = NJS_DATE;
- date->object.shared = 0;
- date->object.extensible = 1;
- date->object.__proto__ = &vm->prototypes[NJS_OBJ_TYPE_DATE].object;
-
- date->time = njs_timeclip(time);
-
- njs_set_date(&vm->retval, date);
-
- return NJS_OK;
+ day = njs_make_day(values[1], values[2], values[3]);
+
+ tm = njs_make_time(values[4], values[5], values[6], values[7]);
+
+ time = njs_make_date(day, tm, 1);
+ }
+
+done:
+
+ date = njs_mp_alloc(vm->mem_pool, sizeof(njs_date_t));
+ if (njs_slow_path(date == NULL)) {
+ njs_memory_error(vm);
+ return NJS_ERROR;
}

- return njs_date_string(vm, "%a %b %d %Y %T GMT%z (%Z)", njs_gettime());
+ njs_lvlhsh_init(&date->object.hash);
+ njs_lvlhsh_init(&date->object.shared_hash);
+ date->object.type = NJS_DATE;
+ date->object.shared = 0;
+ date->object.extensible = 1;
+ date->object.__proto__ = &vm->prototypes[NJS_OBJ_TYPE_DATE].object;
+
+ date->time = njs_timeclip(time);
+
+ njs_set_date(&vm->retval, date);
+
+ return NJS_OK;
}


@@ -1081,7 +1087,7 @@ njs_date_prototype_to_string(njs_vm_t *v
return NJS_ERROR;
}

- return njs_date_string(vm, "%a %b %d %Y %T GMT%z (%Z)",
+ return njs_date_string(vm, &vm->retval, NJS_DATE_FMT_TO_STRING,
njs_date(&args[0])->time);
}

@@ -1097,7 +1103,8 @@ njs_date_prototype_to_date_string(njs_vm
return NJS_ERROR;
}

- return njs_date_string(vm, "%a %b %d %Y", njs_date(&args[0])->time);
+ return njs_date_string(vm, &vm->retval, NJS_DATE_FMT_TO_DATE_STRING,
+ njs_date(&args[0])->time);
}


@@ -1112,77 +1119,108 @@ njs_date_prototype_to_time_string(njs_vm
return NJS_ERROR;
}

- return njs_date_string(vm, "%T GMT%z (%Z)", njs_date(&args[0])->time);
+ return njs_date_string(vm, &vm->retval, NJS_DATE_FMT_TO_TIME_STRING,
+ njs_date(&args[0])->time);
}


static njs_int_t
-njs_date_string(njs_vm_t *vm, const char *fmt, double time)
+njs_date_string(njs_vm_t *vm, njs_value_t *retval, njs_date_fmt_t fmt,
+ double time)
{
- size_t size;
+ u_char *p, sign;
+ int32_t year, tz;
time_t clock;
u_char buf[NJS_DATE_TIME_LEN];
struct tm tm;

- if (!isnan(time)) {
- clock = time / 1000;
- localtime_r(&clock, &tm);
-
- size = strftime((char *) buf, NJS_DATE_TIME_LEN, fmt, &tm);
-
- return njs_string_new(vm, &vm->retval, buf, size, size);
- }
-
- vm->retval = njs_string_invalid_date;
-
- return NJS_OK;
-}
-
-
-static njs_int_t
-njs_date_prototype_to_utc_string(njs_vm_t *vm, njs_value_t *args,
- njs_uint_t nargs, njs_index_t unused)
-{
- double time;
- time_t clock;
- u_char buf[NJS_HTTP_DATE_TIME_LEN], *p;
- struct tm tm;
-
static const char *week[] = { "Sun", "Mon", "Tue", "Wed",
"Thu", "Fri", "Sat" };

static const char *month[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };

- if (njs_slow_path(!njs_is_date(&args[0]))) {
- njs_type_error(vm, "cannot convert %s to date",
- njs_type_string(args[0].type));
-
- return NJS_ERROR;
+ if (njs_slow_path(isnan(time))) {
+ vm->retval = njs_string_invalid_date;
+ return NJS_OK;
}

- time = njs_date(&args[0])->time;
-
- if (!isnan(time)) {
+ p = buf;
+
+ switch (fmt) {
+ case NJS_DATE_FMT_TO_ISO_STRING:
+ case NJS_DATE_FMT_TO_UTC_STRING:
clock = time / 1000;
gmtime_r(&clock, &tm);
-
- p = njs_sprintf(buf, buf + NJS_HTTP_DATE_TIME_LEN,
- "%s, %02d %s %4d %02d:%02d:%02d GMT",
- week[tm.tm_wday], tm.tm_mday, month[tm.tm_mon],
- tm.tm_year + 1900, tm.tm_hour, tm.tm_min, tm.tm_sec);
-
- return njs_string_new(vm, &vm->retval, buf, p - buf, p - buf);
+ year = tm.tm_year + 1900;
+
+ if (fmt == NJS_DATE_FMT_TO_UTC_STRING) {
+ p = njs_sprintf(p, buf + NJS_DATE_TIME_LEN,
+ "%s, %02d %s %04d %02d:%02d:%02d GMT",
+ week[tm.tm_wday], tm.tm_mday, month[tm.tm_mon],
+ year, tm.tm_hour, tm.tm_min, tm.tm_sec);
+
+ break;
+ }
+
+ if (year >= 0 && year <= 9999) {
+ p = njs_sprintf(p, buf + NJS_DATE_TIME_LEN, "%04d", year);
+
+ } else {
+ if (year > 0) {
+ *p++ = '+';
+ }
+
+ p = njs_sprintf(p, buf + NJS_DATE_TIME_LEN, "%06d", year);
+ }
+
+ p = njs_sprintf(p, buf + NJS_DATE_TIME_LEN,
+ "-%02d-%02dT%02d:%02d:%02d.%03dZ",
+ tm.tm_mon + 1, tm.tm_mday, tm.tm_hour,
+ tm.tm_min, tm.tm_sec,
+ (int) ((int64_t) time % 1000));
+
+ break;
+
+ case NJS_DATE_FMT_TO_TIME_STRING:
+ case NJS_DATE_FMT_TO_DATE_STRING:
+ case NJS_DATE_FMT_TO_STRING:
+ default:
+ clock = time / 1000;
+ localtime_r(&clock, &tm);
+
+ if (fmt != NJS_DATE_FMT_TO_TIME_STRING) {
+ p = njs_sprintf(p, buf + NJS_DATE_TIME_LEN,
+ "%s %s %02d %04d",
+ week[tm.tm_wday], month[tm.tm_mon], tm.tm_mday,
+ tm.tm_year + 1900);
+ }
+
+ if (fmt != NJS_DATE_FMT_TO_DATE_STRING) {
+ tz = -njs_tz_offset(time);
+ sign = (tz < 0) ? '-' : '+';
+
+ if (tz < 0) {
+ tz = -tz;
+ }
+
+ if (p != buf) {
+ *p++ = ' ';
+ }
+
+ p = njs_sprintf(p, buf + NJS_DATE_TIME_LEN,
+ "%02d:%02d:%02d GMT%c%02d%02d",
+ tm.tm_hour, tm.tm_min, tm.tm_sec,
+ sign, tz / 60, tz % 60);
+ }
}

- vm->retval = njs_string_invalid_date;
-
- return NJS_OK;
+ return njs_string_new(vm, retval, buf, p - buf, p - buf);
}


static njs_int_t
-njs_date_prototype_to_iso_string(njs_vm_t *vm, njs_value_t *args,
+njs_date_prototype_to_utc_string(njs_vm_t *vm, njs_value_t *args,
njs_uint_t nargs, njs_index_t unused)
{
if (njs_slow_path(!njs_is_date(&args[0]))) {
@@ -1192,6 +1230,15 @@ njs_date_prototype_to_iso_string(njs_vm_
return NJS_ERROR;
}

+ return njs_date_string(vm, &vm->retval, NJS_DATE_FMT_TO_UTC_STRING,
+ njs_date(&args[0])->time);
+}
+
+
+static njs_int_t
+njs_date_prototype_to_iso_string(njs_vm_t *vm, njs_value_t *args,
+ njs_uint_t nargs, njs_index_t unused)
+{
return njs_date_to_string(vm, &vm->retval, &args[0]);
}

@@ -1199,33 +1246,15 @@ njs_date_prototype_to_iso_string(njs_vm_
njs_int_t
njs_date_to_string(njs_vm_t *vm, njs_value_t *retval, const njs_value_t *date)
{
- int32_t year;
- double time;
- time_t clock;
- u_char buf[NJS_ISO_DATE_TIME_LEN], *p;
- struct tm tm;
-
- time = njs_date(date)->time;
-
- if (!isnan(time)) {
- clock = time / 1000;
-
- gmtime_r(&clock, &tm);
-
- year = tm.tm_year + 1900;
-
- p = njs_sprintf(buf, buf + NJS_ISO_DATE_TIME_LEN,
- (year < 0) ? "%07d-%02d-%02dT%02d:%02d:%02d.%03dZ"
- : "%04d-%02d-%02dT%02d:%02d:%02d.%03dZ",
- year, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min,
- tm.tm_sec, (int) ((int64_t) time % 1000));
-
- return njs_string_new(vm, retval, buf, p - buf, p - buf);
+ if (njs_slow_path(!njs_is_date(date))) {
+ njs_type_error(vm, "cannot convert %s to date",
+ njs_type_string(date->type));
+
+ return NJS_ERROR;
}

- *retval = njs_string_invalid_date;
-
- return NJS_OK;
+ return njs_date_string(vm, retval, NJS_DATE_FMT_TO_ISO_STRING,
+ njs_date(date)->time);
}


diff -r 9054169baaaf -r ea70e6e7a0b8 src/test/njs_unit_test.c
--- a/src/test/njs_unit_test.c Fri Nov 01 16:02:21 2019 +0300
+++ b/src/test/njs_unit_test.c Fri Nov 01 19:26:42 2019 +0300
@@ -11572,6 +11572,9 @@ static njs_unit_test_t njs_test[] =
{ njs_str("(new Date(86400)).getTime()"),
njs_str("86400") },

+ { njs_str("Date().split(' ')[0] in {'Mon':1, 'Tue':1, 'Wed':1, 'Thu':1, 'Fri':1, 'Sat':1, 'Sun':1}"),
+ njs_str("true") },
+
{ njs_str("var d = new Date(''); d +' '+ d.getTime()"),
njs_str("Invalid Date NaN") },

@@ -11619,9 +11622,38 @@ static njs_unit_test_t njs_test[] =
"local.toISOString()"),
njs_str("1999-10-10T10:10:10.010Z") },

-#if 0
+#if 0 /* FIXME: implement own gmtime_r(). */
/* These tests fail on Solaris: gmtime_r() returns off by one day. */

+ { njs_str("["
+ "'-010000-01-01T00:00:00.000Z',"
+ "'+010000-01-01T00:00:00.000Z',"
+ "'0002-01-01T00:00:00.000Z',"
+ "'0123-01-01T00:00:00.000Z',"
+ "].every((iso)=> (new Date(iso)).toISOString() === iso)"),
+ njs_str("true") },
+
+ { njs_str("new Date('0020-01-01T00:00:00Z').toUTCString()"),
+ njs_str("Wed, 01 Jan 0020 00:00:00 GMT") },
+
+ { njs_str("new Date('0020-01-01T00:00:00Z').toString().slice(0, 15)"),
+ njs_str("Wed Jan 01 0020") },
+
+ { njs_str("(new Date('-000001-07-01T00:00Z')).toUTCString()"),
+ njs_str("Thu, 01 Jul -0001 00:00:00 GMT") },
+
+ { njs_str("(new Date('-000012-07-01T00:00Z')).toUTCString()"),
+ njs_str("Fri, 01 Jul -0012 00:00:00 GMT") },
+
+ { njs_str("(new Date('-000123-07-01T00:00Z')).toUTCString()"),
+ njs_str("Sun, 01 Jul -0123 00:00:00 GMT") },
+
+ { njs_str("(new Date('-001234-07-01T00:00Z')).toUTCString()"),
+ njs_str("Fri, 01 Jul -1234 00:00:00 GMT") },
+
+ { njs_str("(new Date('-012345-07-01T00:00Z')).toUTCString()"),
+ njs_str("Thu, 01 Jul -12345 00:00:00 GMT") },
+
{ njs_str("var d = new Date(-62167219200000); d.toISOString()"),
njs_str("0000-01-01T00:00:00.000Z") },

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Subject Author Views Posted

[njs] Fixed "Date" object string formatting.

Dmitry Volyntsev 104 November 01, 2019 12:28PM



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