datetime: Move formats into another file

1 files changed, 191 insertions, 0 deletions

diff --git a/src/formats.h b/src/formats.h
new file mode 100644
index 0000000..124a400
--- /dev/null
+++ b/src/formats.h
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2021-2022  P. J. McDermott
+ *
+ * This file is part of @
+ *
+ * @ 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @ 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 @.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef FORMATS_H_
+#define FORMATS_H_
+
+/* IMPORTANT: All of the format strings in each array must be padded with spaces
+ * to be of equal lengths */
+static const char *FORMATS_DATE[] = {
+	" %a            ",  /* Wed                          */
+	" %Y-%m-%d      ",  /* 1969-12-31                   */
+	" %Y/%m/%d      ",  /* 1969/12/31                   */
+	" %Y.%m.%d      ",  /* 1969.12.31                   */
+	" %m-%d-%Y      ",  /* 12-31-1969                   */
+	" %m-%d         ",  /* 12-31                        */
+	" %m/%d/%Y      ",  /* 12/31/1969                   */
+	" %m/%d         ",  /* 12/31                        */
+	" %m.%d.%Y      ",  /* 12.31.1969                   */
+	" %m.%d         ",  /* 12.31                        */
+	" %e %b %Y      ",  /* 31 Dec 1969                  */
+	" %e %b         ",  /* 31 Dec                       */
+	" %d-%b-%Y      ",  /* 31-Dec-1969                  */
+	" %d-%b         ",  /* 31-Dec                       */
+	" %d/%b/%Y      ",  /* 31/Dec/1969                  */
+	" %d/%b         ",  /* 31/Dec                       */
+	" %a %e %b %Y   ",  /* Wed 31 Dec 1969              */
+	" %a %e %b      ",  /* Wed 31 Dec                   */
+	" %a %d-%b-%Y   ",  /* Wed 31-Dec-1969              */
+	" %a %d-%b      ",  /* Wed 31-Dec                   */
+	" %a %d/%b/%Y   ",  /* Wed 31/Dec/1969              */
+	" %a %d/%b      ",  /* Wed 31/Dec                   */
+	" %a, %e %b %Y  ",  /* Wed, 31 Dec 1969             */
+	" %a, %e %b     ",  /* Wed, 31 Dec                  */
+	" %a, %d-%b-%Y  ",  /* Wed, 31-Dec-1969             */
+	" %a, %d-%b     ",  /* Wed, 31-Dec                  */
+	" %a, %d/%b/%Y  ",  /* Wed, 31/Dec/1969             */
+	" %a, %d/%b     ",  /* Wed, 31/Dec                  */
+	" %b %e, %Y     ",  /* Dec 31, 1969                 */
+	" %b %e         ",  /* Dec 31                       */
+	" %b-%d-%Y      ",  /* Dec-31-1969                  */
+	" %b-%d         ",  /* Dec-31                       */
+	" %b/%d/%Y      ",  /* Dec/31/1969                  */
+	" %b/%d         ",  /* Dec/31                       */
+	" %a %b %e, %Y  ",  /* Wed Dec 31, 1969             */
+	" %a %b %e      ",  /* Wed Dec 31                   */
+	" %a %b-%d-%Y   ",  /* Wed Dec-31-1969              */
+	" %a %b-%d      ",  /* Wed Dec-31                   */
+	" %a %b/%d/%Y   ",  /* Wed Dec/31/1969              */
+	" %a %b/%d      ",  /* Wed Dec/31                   */
+	" %a, %b %e, %Y ",  /* Wed, Dec 31, 1969            */
+	" %a, %b %e     ",  /* Wed, Dec 31                  */
+	" %a, %b-%d-%Y  ",  /* Wed, Dec-31-1969             */
+	" %a, %b-%d     ",  /* Wed, Dec-31                  */
+	" %a, %b/%d/%Y  ",  /* Wed, Dec/31/1969             */
+	" %a, %b/%d     ",  /* Wed, Dec/31                  */
+	"",                 /* End of parsing formats       */
+	" %A            ",  /* Wednesday                    */
+	" %A %e %b %Y   ",  /* Wednesday 31 Dec 1969        */
+	" %A %e %b      ",  /* Wednesday 31 Dec             */
+	" %A %d-%b-%Y   ",  /* Wednesday 31-Dec-1969        */
+	" %A %d-%b      ",  /* Wednesday 31-Dec             */
+	" %A %d/%b/%Y   ",  /* Wednesday 31/Dec/1969        */
+	" %A %d/%b      ",  /* Wednesday 31/Dec             */
+	" %A, %e %b %Y  ",  /* Wednesday, 31 Dec 1969       */
+	" %A, %e %b     ",  /* Wednesday, 31 Dec            */
+	" %A, %d-%b-%Y  ",  /* Wednesday, 31-Dec-1969       */
+	" %A, %d-%b     ",  /* Wednesday, 31-Dec            */
+	" %A, %d/%b/%Y  ",  /* Wednesday, 31/Dec/1969       */
+	" %A, %d/%b     ",  /* Wednesday, 31/Dec            */
+	" %A %b %e, %Y  ",  /* Wednesday Dec 31, 1969       */
+	" %A %b %e      ",  /* Wednesday Dec 31             */
+	" %A %b-%d-%Y   ",  /* Wednesday Dec-31-1969        */
+	" %A %b-%d      ",  /* Wednesday Dec-31             */
+	" %A %b/%d/%Y   ",  /* Wednesday Dec/31/1969        */
+	" %A %b/%d      ",  /* Wednesday Dec/31             */
+	" %A, %b %e, %Y ",  /* Wednesday, Dec 31, 1969      */
+	" %A, %b %e     ",  /* Wednesday, Dec 31            */
+	" %A, %b-%d-%Y  ",  /* Wednesday, Dec-31-1969       */
+	" %A, %b-%d     ",  /* Wednesday, Dec-31            */
+	" %A, %b/%d/%Y  ",  /* Wednesday, Dec/31/1969       */
+	" %A, %b/%d     ",  /* Wednesday, Dec/31            */
+	" %e %B %Y      ",  /* 31 December 1969             */
+	" %e %B         ",  /* 31 December                  */
+	" %d-%B-%Y      ",  /* 31-December-1969             */
+	" %d-%B         ",  /* 31-December                  */
+	" %d/%B/%Y      ",  /* 31/December/1969             */
+	" %d/%B         ",  /* 31/December                  */
+	" %a %e %B %Y   ",  /* Wed 31 December 1969         */
+	" %a %e %B      ",  /* Wed 31 December              */
+	" %a %d-%B-%Y   ",  /* Wed 31-December-1969         */
+	" %a %d-%B      ",  /* Wed 31-December              */
+	" %a %d/%B/%Y   ",  /* Wed 31/December/1969         */
+	" %a %d/%B      ",  /* Wed 31/December              */
+	" %a, %e %B %Y  ",  /* Wed, 31 December 1969        */
+	" %a, %e %B     ",  /* Wed, 31 December             */
+	" %a, %d-%B-%Y  ",  /* Wed, 31-December-1969        */
+	" %a, %d-%B     ",  /* Wed, 31-December             */
+	" %a, %d/%B/%Y  ",  /* Wed, 31/December/1969        */
+	" %a, %d/%B     ",  /* Wed, 31/December             */
+	" %B %e, %Y     ",  /* December 31, 1969            */
+	" %B %e         ",  /* December 31                  */
+	" %B-%d-%Y      ",  /* December-31-1969             */
+	" %B-%d         ",  /* December-31                  */
+	" %B/%d/%Y      ",  /* December/31/1969             */
+	" %B/%d         ",  /* December/31                  */
+	" %a %B %e, %Y  ",  /* Wed December 31, 1969        */
+	" %a %B %e      ",  /* Wed December 31              */
+	" %a %B-%d-%Y   ",  /* Wed December-31-1969         */
+	" %a %B-%d      ",  /* Wed December-31              */
+	" %a %B/%d/%Y   ",  /* Wed December/31/1969         */
+	" %a %B/%d      ",  /* Wed December/31              */
+	" %a, %B %e, %Y ",  /* Wed, December 31, 1969       */
+	" %a, %B %e     ",  /* Wed, December 31             */
+	" %a, %B-%d-%Y  ",  /* Wed, December-31-1969        */
+	" %a, %B-%d     ",  /* Wed, December-31             */
+	" %a, %B/%d/%Y  ",  /* Wed, December/31/1969        */
+	" %a, %B/%d     ",  /* Wed, December/31             */
+	" %A %e %B %Y   ",  /* Wednesday 31 December 1969   */
+	" %A %e %B      ",  /* Wednesday 31 December        */
+	" %A %d-%B-%Y   ",  /* Wednesday 31-December-1969   */
+	" %A %d-%B      ",  /* Wednesday 31-December        */
+	" %A %d/%B/%Y   ",  /* Wednesday 31/December/1969   */
+	" %A %d/%B      ",  /* Wednesday 31/December        */
+	" %A, %e %B %Y  ",  /* Wednesday, 31 December 1969  */
+	" %A, %e %B     ",  /* Wednesday, 31 December       */
+	" %A, %d-%B-%Y  ",  /* Wednesday, 31-December-1969  */
+	" %A, %d-%B     ",  /* Wednesday, 31-December       */
+	" %A, %d/%B/%Y  ",  /* Wednesday, 31/December/1969  */
+	" %A, %d/%B     ",  /* Wednesday, 31/December       */
+	" %A %B %e, %Y  ",  /* Wednesday December 31, 1969  */
+	" %A %B %e      ",  /* Wednesday December 31        */
+	" %A %B-%d-%Y   ",  /* Wednesday December-31-1969   */
+	" %A %B-%d      ",  /* Wednesday December-31        */
+	" %A %B/%d/%Y   ",  /* Wednesday December/31/1969   */
+	" %A %B/%d      ",  /* Wednesday December/31        */
+	" %A, %B %e, %Y ",  /* Wednesday, December 31, 1969 */
+	" %A, %B %e     ",  /* Wednesday, December 31       */
+	" %A, %B-%d-%Y  ",  /* Wednesday, December-31-1969  */
+	" %A, %B-%d     ",  /* Wednesday, December-31       */
+	" %A, %B/%d/%Y  ",  /* Wednesday, December/31/1969  */
+	" %A, %B/%d     ",  /* Wednesday, December/31       */
+};
+
+static const char *FORMATS_TIME[] = {
+	" %I:%M:%S %p ",  /* 7:00:01 PM */
+	" %H:%M:%S    ",  /* 19:00:01   */
+	" %I:%M %p    ",  /* 7:00 PM    */
+	" %H:%M       ",  /* 19:00      */
+	" %I.%M.%S %p ",  /* 7.00.01 PM */
+	" %H.%M.%S    ",  /* 19.00.01   */
+	" %I.%M %p    ",  /* 7.00 PM    */
+	" %H.%M       ",  /* 19.00      */
+	" %I%M%S %p   ",  /* 70001 PM   */
+	" %H%M%S      ",  /* 190001     */
+	" %I%M %p     ",  /* 700 PM     */
+	" %H%M        ",  /* 1900       */
+};
+
+static const char *FORMATS_MISC[] = {
+	/* ISO 8601: 1969-12-31 delimited by "T" */
+	" %Y-%m-%dT%H:%M:%S    ",
+	" %Y-%m-%dT%H:%M       ",
+	/* ISO 8601: 19691231 delimited by "T" */
+	" %Y%m%dT%H%M%S        ",
+	" %Y%m%dT%H%M          ",
+	/* 19691231 */
+	" %Y%m%d  %I%M%S %p    ",
+	" %Y%m%d  %H%M%S       ",
+	" %Y%m%d  %I%M %p      ",
+	" %Y%m%d  %H%M         ",
+	/* Wed Dec 31 19:00:01 1969 */
+	" %a %b %d %H:%M:%S %Y ",
+};
+
+#endif  /* FORMATS_H_ */