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gtimezone: support POSIX 1003.1-2001 quoted TZ abbreviations

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TZ strings like '<-03>3' were introduced in POSIX 1003.1-2001 and
are currently specified in:
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03
This commit is contained in:
Paul Eggert 2020-07-16 12:41:49 -07:00
parent 21b000356e
commit bc78f0ad27
1 changed files with 15 additions and 4 deletions
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19
glib/gtimezone.c
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@ -1366,14 +1366,24 @@ parse_identifier_boundary (gchar **pos, TimeZoneDate *target)
static gboolean
set_tz_name (gchar **pos, gchar *buffer, guint size)
{
gboolean quoted = **pos == '<';
gchar *name_pos = *pos;
guint len;
/* Name is ASCII alpha (Is this necessarily true?) */
while (g_ascii_isalpha (**pos))
++(*pos);
if (quoted)
{
name_pos++;
do
++(*pos);
while (g_ascii_isalnum (**pos) || **pos == '-' || **pos == '+');
if (**pos != '>')
return FALSE;
}
else
while (g_ascii_isalpha (**pos))
++(*pos);
/* Name should be three or more alphabetic characters */
/* Name should be three or more characters */
if (*pos - name_pos < 3)
return FALSE;
@ -1381,6 +1391,7 @@ set_tz_name (gchar **pos, gchar *buffer, guint size)
/* name_pos isn't 0-terminated, so we have to limit the length expressly */
len = *pos - name_pos > size - 1 ? size - 1 : *pos - name_pos;
strncpy (buffer, name_pos, len);
*pos += quoted;
return TRUE;
}