diff options
Diffstat (limited to 'time/strptime.c')
| -rw-r--r-- | time/strptime.c | 119 |
1 files changed, 69 insertions, 50 deletions
diff --git a/time/strptime.c b/time/strptime.c index 14814ce153..959810e0f3 100644 --- a/time/strptime.c +++ b/time/strptime.c @@ -83,8 +83,9 @@ localtime_r (t, tp) #endif /* We intentionally do not use isdigit() for testing because this will lead to problems with the wide character version. */ -#define get_number(from, to) \ +#define get_number(from, to, n) \ do { \ + int __n = n; \ val = 0; \ while (*rp == ' ') \ ++rp; \ @@ -93,42 +94,60 @@ localtime_r (t, tp) do { \ val *= 10; \ val += *rp++ - '0'; \ - } while (val * 10 <= to && *rp >= '0' && *rp <= '9'); \ + } while (--__n > 0 && val * 10 <= to && *rp >= '0' && *rp <= '9'); \ if (val < from || val > to) \ return NULL; \ } while (0) #ifdef _NL_CURRENT -# define get_alt_number(from, to) \ - do { \ +# define get_alt_number(from, to, n) \ + ({ \ + __label__ do_normal; \ if (*decided != raw) \ { \ const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS); \ + int __n = n; \ + int any = 0; \ + while (*rp == ' ') \ + ++rp; \ val = 0; \ - while (*alts != '\0') \ - { \ - size_t len = strlen (alts); \ - if (strncasecmp (alts, rp, len) == 0) \ + do { \ + val *= 10; \ + while (*alts != '\0') \ + { \ + size_t len = strlen (alts); \ + if (strncasecmp (alts, rp, len) == 0) \ + break; \ + alts += len + 1; \ + ++val; \ + } \ + if (*alts == '\0') \ + { \ + if (*decided == not && ! any) \ + goto do_normal; \ + /* If we haven't read anything it's an error. */ \ + if (! any) \ + return NULL; \ + /* Correct the premature multiplication. */ \ + val /= 10; \ break; \ - alts = strchr (alts, '\0') + 1; \ - ++val; \ - } \ - if (*alts == '\0') \ - { \ - if (*decided == loc && val != 0) \ - return NULL; \ - } \ - else \ - { \ + } \ + else \ *decided = loc; \ - break; \ - } \ + } while (--__n > 0 && val * 10 <= to); \ + if (val < from || val > to) \ + return NULL; \ } \ - get_number (from, to); \ - } while (0) + else \ + { \ + do_normal: \ + get_number (from, to, n); \ + } \ + 0; \ + }) #else -# define get_alt_number(from, to) \ +# define get_alt_number(from, to, n) \ /* We don't have the alternate representation. */ \ - get_number(from, to) + get_number(from, to, n) #endif #define recursive(new_fmt) \ (*(new_fmt) != '\0' \ @@ -253,7 +272,7 @@ strptime_internal (buf, format, tm, decided) int have_wday, want_xday; int have_yday; int have_mon, have_mday; - + rp = buf; fmt = format; have_I = is_pm = 0; @@ -399,14 +418,14 @@ strptime_internal (buf, format, tm, decided) break; case 'C': /* Match century number. */ - get_number (0, 99); + get_number (0, 99, 2); century = val; want_xday = 1; break; case 'd': case 'e': /* Match day of month. */ - get_number (1, 31); + get_number (1, 31, 2); tm->tm_mday = val; have_mday = 1; want_xday = 1; @@ -446,32 +465,32 @@ strptime_internal (buf, format, tm, decided) case 'k': case 'H': /* Match hour in 24-hour clock. */ - get_number (0, 23); + get_number (0, 23, 2); tm->tm_hour = val; have_I = 0; break; case 'I': /* Match hour in 12-hour clock. */ - get_number (1, 12); + get_number (1, 12, 2); tm->tm_hour = val % 12; have_I = 1; break; case 'j': /* Match day number of year. */ - get_number (1, 366); + get_number (1, 366, 3); tm->tm_yday = val - 1; have_yday = 1; break; case 'm': /* Match number of month. */ - get_number (1, 12); + get_number (1, 12, 2); tm->tm_mon = val - 1; have_mon = 1; want_xday = 1; break; case 'M': /* Match minute. */ - get_number (0, 59); + get_number (0, 59, 2); tm->tm_min = val; break; case 'n': @@ -558,7 +577,7 @@ strptime_internal (buf, format, tm, decided) } break; case 'S': - get_number (0, 61); + get_number (0, 61, 2); tm->tm_sec = val; break; case 'X': @@ -585,12 +604,12 @@ strptime_internal (buf, format, tm, decided) return NULL; break; case 'u': - get_number (1, 7); + get_number (1, 7, 1); tm->tm_wday = val % 7; have_wday = 1; break; case 'g': - get_number (0, 99); + get_number (0, 99, 2); /* XXX This cannot determine any field in TM. */ break; case 'G': @@ -605,19 +624,19 @@ strptime_internal (buf, format, tm, decided) case 'U': case 'V': case 'W': - get_number (0, 53); + get_number (0, 53, 2); /* XXX This cannot determine any field in TM without some information. */ break; case 'w': /* Match number of weekday. */ - get_number (0, 6); + get_number (0, 6, 1); tm->tm_wday = val; have_wday = 1; break; case 'y': /* Match year within century. */ - get_number (0, 99); + get_number (0, 99, 2); /* The "Year 2000: The Millennium Rollover" paper suggests that values in the range 69-99 refer to the twentieth century. */ tm->tm_year = val >= 69 ? val : val + 100; @@ -627,7 +646,7 @@ strptime_internal (buf, format, tm, decided) break; case 'Y': /* Match year including century number. */ - get_number (0, 9999); + get_number (0, 9999, 4); tm->tm_year = val - 1900; want_century = 0; want_xday = 1; @@ -744,7 +763,7 @@ strptime_internal (buf, format, tm, decided) case 'd': case 'e': /* Match day of month using alternate numeric symbols. */ - get_alt_number (1, 31); + get_alt_number (1, 31, 2); tm->tm_mday = val; have_mday = 1; want_xday = 1; @@ -752,50 +771,50 @@ strptime_internal (buf, format, tm, decided) case 'H': /* Match hour in 24-hour clock using alternate numeric symbols. */ - get_alt_number (0, 23); + get_alt_number (0, 23, 2); tm->tm_hour = val; have_I = 0; break; case 'I': /* Match hour in 12-hour clock using alternate numeric symbols. */ - get_alt_number (1, 12); + get_alt_number (1, 12, 2); tm->tm_hour = val - 1; have_I = 1; break; case 'm': /* Match month using alternate numeric symbols. */ - get_alt_number (1, 12); + get_alt_number (1, 12, 2); tm->tm_mon = val - 1; have_mon = 1; want_xday = 1; break; case 'M': /* Match minutes using alternate numeric symbols. */ - get_alt_number (0, 59); + get_alt_number (0, 59, 2); tm->tm_min = val; break; case 'S': /* Match seconds using alternate numeric symbols. */ - get_alt_number (0, 61); + get_alt_number (0, 61, 2); tm->tm_sec = val; break; case 'U': case 'V': case 'W': - get_alt_number (0, 53); + get_alt_number (0, 53, 2); /* XXX This cannot determine any field in TM without further information. */ break; case 'w': /* Match number of weekday using alternate numeric symbols. */ - get_alt_number (0, 6); + get_alt_number (0, 6, 1); tm->tm_wday = val; have_wday = 1; break; case 'y': /* Match year within century using alternate numeric symbols. */ - get_alt_number (0, 99); + get_alt_number (0, 99, 2); tm->tm_year = val >= 69 ? val : val + 100; want_xday = 1; break; @@ -824,9 +843,9 @@ strptime_internal (buf, format, tm, decided) tm->tm_mon = t_mon - 1; if (!have_mday) tm->tm_mday = tm->tm_yday - __mon_yday[__isleap(1900 + tm->tm_year)][t_mon - 1] + 1; - } + } day_of_the_week (tm); - } + } if (want_xday && !have_yday) day_of_the_year (tm); |