From 972dcfcdbfe75dcfeb777150c136576cf1a71e99 Mon Sep 17 00:00:00 2001 From: Tudor Florea Date: Fri, 9 Oct 2015 22:59:03 +0200 Subject: initial commit for Enea Linux 5.0 arm Signed-off-by: Tudor Florea --- meta/recipes-extended/at/at/posixtm.c | 328 ++++++++++++++++++++++++++++++++++ 1 file changed, 328 insertions(+) create mode 100644 meta/recipes-extended/at/at/posixtm.c (limited to 'meta/recipes-extended/at/at/posixtm.c') diff --git a/meta/recipes-extended/at/at/posixtm.c b/meta/recipes-extended/at/at/posixtm.c new file mode 100644 index 0000000000..5514ba4fe2 --- /dev/null +++ b/meta/recipes-extended/at/at/posixtm.c @@ -0,0 +1,328 @@ +/* Parse dates for touch and date. + + Copyright (C) 1989, 1990, 1991, 1998, 2000, 2001, 2002, 2003, 2004, + 2005, 2006, 2007 Free Software Foundation Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +/* Yacc-based version written by Jim Kingdon and David MacKenzie. + Rewritten by Jim Meyering. */ + +#include + +#include "posixtm.h" + +#include +#include +#include +#include + +#if USE_UNLOCKED_IO +# include "unlocked-io.h" +#endif + +/* ISDIGIT differs from isdigit, as follows: + - Its arg may be any int or unsigned int; it need not be an unsigned char + or EOF. + - It's typically faster. + POSIX says that only '0' through '9' are digits. Prefer ISDIGIT to + isdigit unless it's important to use the locale's definition + of `digit' even when the host does not conform to POSIX. */ +#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9) + +time_t mktime (); + +/* + POSIX requires: + + touch -t [[CC]YY]mmddhhmm[.ss] FILE... + 8, 10, or 12 digits, followed by optional .ss + (PDS_LEADING_YEAR | PDS_CENTURY | PDS_SECONDS) + + touch mmddhhmm[YY] FILE... (obsoleted by POSIX 1003.1-2001) + 8 or 10 digits, YY (if present) must be in the range 69-99 + (PDS_TRAILING_YEAR | PDS_PRE_2000) + + date mmddhhmm[[CC]YY] + 8, 10, or 12 digits + (PDS_TRAILING_YEAR | PDS_CENTURY) + +*/ + +static int +year (struct tm *tm, const int *digit_pair, size_t n, unsigned int syntax_bits) +{ + switch (n) + { + case 1: + tm->tm_year = *digit_pair; + /* Deduce the century based on the year. + POSIX requires that 00-68 be interpreted as 2000-2068, + and that 69-99 be interpreted as 1969-1999. */ + if (digit_pair[0] <= 68) + { + if (syntax_bits & PDS_PRE_2000) + return 1; + tm->tm_year += 100; + } + break; + + case 2: + if (! (syntax_bits & PDS_CENTURY)) + return 1; + tm->tm_year = digit_pair[0] * 100 + digit_pair[1] - 1900; + break; + + case 0: + { + time_t now; + struct tm *tmp; + + /* Use current year. */ + time (&now); + tmp = localtime (&now); + if (! tmp) + return 1; + tm->tm_year = tmp->tm_year; + } + break; + + default: + abort (); + } + + return 0; +} + +static int +posix_time_parse (struct tm *tm, const char *s, unsigned int syntax_bits) +{ + const char *dot = NULL; + int pair[6]; + int *p; + size_t i; + + size_t s_len = strlen (s); + size_t len = (((syntax_bits & PDS_SECONDS) && (dot = strchr (s, '.'))) + ? (size_t) (dot - s) + : s_len); + + if (len != 8 && len != 10 && len != 12) + return 1; + + if (dot) + { + if (!(syntax_bits & PDS_SECONDS)) + return 1; + + if (s_len - len != 3) + return 1; + } + + for (i = 0; i < len; i++) + if (!ISDIGIT (s[i])) + return 1; + + len /= 2; + for (i = 0; i < len; i++) + pair[i] = 10 * (s[2*i] - '0') + s[2*i + 1] - '0'; + + p = pair; + if (syntax_bits & PDS_LEADING_YEAR) + { + if (year (tm, p, len - 4, syntax_bits)) + return 1; + p += len - 4; + len = 4; + } + + /* Handle 8 digits worth of `MMDDhhmm'. */ + tm->tm_mon = *p++ - 1; + tm->tm_mday = *p++; + tm->tm_hour = *p++; + tm->tm_min = *p++; + len -= 4; + + /* Handle any trailing year. */ + if (syntax_bits & PDS_TRAILING_YEAR) + { + if (year (tm, p, len, syntax_bits)) + return 1; + } + + /* Handle seconds. */ + if (!dot) + { + tm->tm_sec = 0; + } + else + { + int seconds; + + ++dot; + if (!ISDIGIT (dot[0]) || !ISDIGIT (dot[1])) + return 1; + seconds = 10 * (dot[0] - '0') + dot[1] - '0'; + + tm->tm_sec = seconds; + } + + return 0; +} + +/* Parse a POSIX-style date, returning true if successful. */ + +bool +posixtime (time_t *p, const char *s, unsigned int syntax_bits) +{ + struct tm tm0 +#ifdef lint + /* Placate gcc-4's -Wuninitialized. + posix_time_parse fails to set all of tm0 only when it returns + nonzero (due to year() returning nonzero), and in that case, + this code doesn't use the tm0 at all. */ + = { 0, } +#endif + ; + struct tm tm1; + struct tm const *tm; + time_t t; + + if (posix_time_parse (&tm0, s, syntax_bits)) + return false; + + tm1 = tm0; + tm1.tm_isdst = -1; + t = mktime (&tm1); + + if (t != (time_t) -1) + tm = &tm1; + else + { + /* mktime returns -1 for errors, but -1 is also a valid time_t + value. Check whether an error really occurred. */ + tm = localtime (&t); + if (! tm) + return false; + } + + /* Reject dates like "September 31" and times like "25:61". */ + if ((tm0.tm_year ^ tm->tm_year) + | (tm0.tm_mon ^ tm->tm_mon) + | (tm0.tm_mday ^ tm->tm_mday) + | (tm0.tm_hour ^ tm->tm_hour) + | (tm0.tm_min ^ tm->tm_min) + | (tm0.tm_sec ^ tm->tm_sec)) + return false; + + *p = t; + return true; +} + +#ifdef TEST_POSIXTIME +/* + Test mainly with syntax_bits == 13 + (aka: (PDS_LEADING_YEAR | PDS_CENTURY | PDS_SECONDS)) + + This test data assumes Universal Time, e.g., TZ="UTC0". + + This test data also assumes that time_t is signed and is at least + 39 bits wide, so that it can represent all years from 0000 through + 9999. A host with 32-bit signed time_t can represent only time + stamps in the range 1901-12-13 20:45:52 through 2038-01-18 + 03:14:07 UTC, assuming POSIX time_t with no leap seconds, so test + cases outside this range will not work on such a host. + + Also, the first two lines of test data assume that the current + year is 2002. + +BEGIN-DATA +12131415.16 13 1039788916 Fri Dec 13 14:15:16 2002 +12131415.16 13 1039788916 Fri Dec 13 14:15:16 2002 +000001010000.00 13 -62167132800 Sun Jan 1 00:00:00 0000 +190112132045.52 13 -2147483648 Fri Dec 13 20:45:52 1901 +190112132045.53 13 -2147483647 Fri Dec 13 20:45:53 1901 +190112132046.52 13 -2147483588 Fri Dec 13 20:46:52 1901 +190112132145.52 13 -2147480048 Fri Dec 13 21:45:52 1901 +190112142045.52 13 -2147397248 Sat Dec 14 20:45:52 1901 +190201132045.52 13 -2144805248 Mon Jan 13 20:45:52 1902 +196912312359.59 13 -1 Wed Dec 31 23:59:59 1969 +197001010000.00 13 0 Thu Jan 1 00:00:00 1970 +197001010000.01 13 1 Thu Jan 1 00:00:01 1970 +197001010001.00 13 60 Thu Jan 1 00:01:00 1970 +197001010100.00 13 3600 Thu Jan 1 01:00:00 1970 +197001020000.00 13 86400 Fri Jan 2 00:00:00 1970 +197002010000.00 13 2678400 Sun Feb 1 00:00:00 1970 +197101010000.00 13 31536000 Fri Jan 1 00:00:00 1971 +197001000000.00 13 * * +197000010000.00 13 * * +197001010000.60 13 * * +197001010060.00 13 * * +197001012400.00 13 * * +197001320000.00 13 * * +197013010000.00 13 * * +203801190314.06 13 2147483646 Tue Jan 19 03:14:06 2038 +203801190314.07 13 2147483647 Tue Jan 19 03:14:07 2038 +203801190314.08 13 2147483648 Tue Jan 19 03:14:08 2038 +999912312359.59 13 253402300799 Fri Dec 31 23:59:59 9999 +1112131415 13 1323785700 Tue Dec 13 14:15:00 2011 +1112131415.16 13 1323785716 Tue Dec 13 14:15:16 2011 +201112131415.16 13 1323785716 Tue Dec 13 14:15:16 2011 +191112131415.16 13 -1831974284 Wed Dec 13 14:15:16 1911 +203712131415.16 13 2144326516 Sun Dec 13 14:15:16 2037 +3712131415.16 13 2144326516 Sun Dec 13 14:15:16 2037 +6812131415.16 13 3122633716 Thu Dec 13 14:15:16 2068 +6912131415.16 13 -1590284 Sat Dec 13 14:15:16 1969 +7012131415.16 13 29945716 Sun Dec 13 14:15:16 1970 +1213141599 2 945094500 Mon Dec 13 14:15:00 1999 +1213141500 2 976716900 Wed Dec 13 14:15:00 2000 +END-DATA + +*/ + +# define MAX_BUFF_LEN 1024 + +int +main (void) +{ + char buff[MAX_BUFF_LEN + 1]; + + buff[MAX_BUFF_LEN] = 0; + while (fgets (buff, MAX_BUFF_LEN, stdin) && buff[0]) + { + char time_str[MAX_BUFF_LEN]; + unsigned int syntax_bits; + time_t t; + if (sscanf (buff, "%s %u", time_str, &syntax_bits) != 2) + printf ("*\n"); + else + { + printf ("%-15s %2u ", time_str, syntax_bits); + if (posixtime (&t, time_str, syntax_bits)) + printf ("%12ld %s", (long int) t, ctime (&t)); + else + printf ("%12s %s", "*", "*\n"); + } + } + exit (0); + +} +#endif + +/* +Local Variables: +compile-command: "gcc -DTEST_POSIXTIME -g -O -Wall -W posixtm.c" +End: +*/ -- cgit v1.2.3-54-g00ecf