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/*** token.c -- tokeniser specs and stuff
*
* Copyright (C) 2011-2024 Sebastian Freundt
*
* Author: Sebastian Freundt <freundt@ga-group.nl>
*
* This file is part of dateutils.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the author nor the names of any contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
**/
/* implementation part of token.h */
#if !defined INCLUDED_token_c_
#define INCLUDED_token_c_
#if defined HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */
#include <stddef.h>
#include "token.h"
/* for YWD_*WK_CNT */
#include "date-core.h"
#if defined __INTEL_COMPILER
/* we MUST return a char* */
# pragma warning (disable:2203)
#elif defined __GNUC__
# pragma GCC diagnostic ignored "-Wcast-qual"
#endif /* __INTEL_COMPILER */
struct dt_spec_s
__tok_spec(const char *fp, const char **ep)
{
struct dt_spec_s res = {0};
if (*fp != '%') {
goto out;
}
next:
switch (*++fp) {
default:
goto out;
case 'F':
res.spfl = DT_SPFL_N_DSTD;
break;
case 'T':
res.spfl = DT_SPFL_N_TSTD;
break;
case 'Y':
res.abbr = DT_SPMOD_LONG;
case 'y':
res.spfl = DT_SPFL_N_YEAR;
break;
case 'm':
res.spfl = DT_SPFL_N_MON;
break;
case 'd':
res.spfl = DT_SPFL_N_DCNT_MON;
break;
case 'u':
res.wk_cnt = YWD_MONWK_CNT;
case 'w':
res.spfl = DT_SPFL_N_DCNT_WEEK;
break;
case 'D':
case 'j':
res.spfl = DT_SPFL_N_DCNT_YEAR;
break;
case 'c':
res.spfl = DT_SPFL_N_WCNT_MON;
break;
case 'U':
res.wk_cnt = YWD_SUNWK_CNT;
res.spfl = DT_SPFL_N_WCNT_YEAR;
break;
case 'V':
res.wk_cnt = YWD_ISOWK_CNT;
res.spfl = DT_SPFL_N_WCNT_YEAR;
break;
case 'C':
res.wk_cnt = YWD_ABSWK_CNT;
res.spfl = DT_SPFL_N_WCNT_YEAR;
break;
case 'W':
res.wk_cnt = YWD_MONWK_CNT;
res.spfl = DT_SPFL_N_WCNT_YEAR;
break;
case 'A':
res.abbr = DT_SPMOD_LONG;
case 'a':
res.spfl = DT_SPFL_S_WDAY;
break;
case 'B':
res.abbr = DT_SPMOD_LONG;
case 'b':
case 'h':
res.spfl = DT_SPFL_S_MON;
break;
/* time specs */
case 'I':
res.sc12 = 1;
case 'H':
res.spfl = DT_SPFL_N_HOUR;
break;
case 'M':
res.spfl = DT_SPFL_N_MIN;
break;
case 'S':
res.spfl = DT_SPFL_N_SEC;
break;
case 'N':
res.spfl = DT_SPFL_N_NANO;
break;
/* am/pm indicator */
case 'p':
res.cap = 1;
case 'P':
res.spfl = DT_SPFL_S_AMPM;
break;
case 's':
res.spfl = DT_SPFL_N_EPOCH;
if (fp[1U] == '%' && fp[2U] == 'N') {
res.spfl = DT_SPFL_N_EPOCHNS;
fp += 2U;
}
break;
case 'Z':
res.spfl = DT_SPFL_N_ZDIFF;
break;
case '_':
/* abbrev modifier */
res.abbr = DT_SPMOD_ABBR;
goto next;
case '%':
res.spfl = DT_SPFL_LIT_PERCENT;
break;
case 't':
res.spfl = DT_SPFL_LIT_TAB;
break;
case 'n':
res.spfl = DT_SPFL_LIT_NL;
break;
case 'Q':
res.spfl = DT_SPFL_S_QTR;
break;
case 'q':
res.spfl = DT_SPFL_N_QTR;
break;
case 'O':
/* roman numerals modifier */
res.rom = 1;
goto next;
case '0':
/* 0 padding modifier */
res.pad = DT_SPPAD_ZERO;
goto next;
case ' ':
/* SPC padding modifier */
res.pad = DT_SPPAD_SPC;
goto next;
case '-':
/* OMIT padding modifier */
res.pad = DT_SPPAD_OMIT;
goto next;
case 'r':
/* real modifier */
res.tai = 1;
goto next;
case 'G':
/* for compatibility with posix */
res.abbr = DT_SPMOD_LONG;
case 'g':
res.tai = 1U;
res.spfl = DT_SPFL_N_YEAR;
break;
}
/* check for ordinals */
if (res.spfl > DT_SPFL_UNK && res.spfl <= DT_SPFL_N_LAST &&
fp[1] == 't' && fp[2] == 'h' &&
!res.rom) {
res.ord = 1;
fp += 2;
}
/* check for bizda suffix */
if (res.spfl == DT_SPFL_N_DCNT_MON || res.spfl == DT_SPFL_N_DCNT_YEAR) {
switch (*++fp) {
case 'B':
res.ab = BIZDA_BEFORE;
case 'b':
res.bizda = 1;
break;
default:
fp--;
break;
}
}
out:
if (ep != NULL) {
*ep = (char*)(fp + 1);
}
return res;
}
#if defined __INTEL_COMPILER
# pragma warning (default:2203)
#elif defined __GNUC__
# pragma GCC diagnostic warning "-Wcast-qual"
#endif /* __INTEL_COMPILER */
#endif /* INCLUDED_token_c_ */
|
