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-rw-r--r--camel/broken-date-parser.c515
1 files changed, 0 insertions, 515 deletions
diff --git a/camel/broken-date-parser.c b/camel/broken-date-parser.c
deleted file mode 100644
index 238665cb93..0000000000
--- a/camel/broken-date-parser.c
+++ /dev/null
@@ -1,515 +0,0 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/*
- * Authors: Jeffrey Stedfast <fejj@ximian.com>
- *
- * Copyright 2000 Ximian, Inc. (www.ximian.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * 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., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- *
- */
-
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <glib.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <sys/time.h>
-#include <time.h>
-
-#include "broken-date-parser.h"
-#include "e-time-utils.h"
-
-#define d(x) x
-
-#define NUMERIC_CHARS "1234567890"
-#define WEEKDAY_CHARS "SundayMondayTuesdayWednesdayThursdayFridaySaturday"
-#define MONTH_CHARS "JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember"
-#define TIMEZONE_ALPHA_CHARS "UTCGMTESTEDTCSTCDTMSTPSTPDTZAMNY()"
-#define TIMEZONE_NUMERIC_CHARS "-+1234567890"
-#define TIME_CHARS "1234567890:"
-
-#define DATE_TOKEN_NON_NUMERIC (1 << 0)
-#define DATE_TOKEN_NON_WEEKDAY (1 << 1)
-#define DATE_TOKEN_NON_MONTH (1 << 2)
-#define DATE_TOKEN_NON_TIME (1 << 3)
-#define DATE_TOKEN_HAS_COLON (1 << 4)
-#define DATE_TOKEN_NON_TIMEZONE_ALPHA (1 << 5)
-#define DATE_TOKEN_NON_TIMEZONE_NUMERIC (1 << 6)
-#define DATE_TOKEN_HAS_SIGN (1 << 7)
-
-static unsigned char datetok_table[256] = {
- 128,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
- 111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
- 111,111,111,111,111,111,111,111, 79, 79,111,175,111,175,111,111,
- 38, 38, 38, 38, 38, 38, 38, 38, 38, 38,119,111,111,111,111,111,
- 111, 75,111, 79, 75, 79,105, 79,111,111,107,111,111, 73, 75,107,
- 79,111,111, 73, 77, 79,111,109,111, 79, 79,111,111,111,111,111,
- 111,105,107,107,109,105,111,107,105,105,111,111,107,107,105,105,
- 107,111,105,105,105,105,107,111,111,105,111,111,111,111,111,111,
- 111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
- 111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
- 111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
- 111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
- 111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
- 111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
- 111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
- 111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,111,
-};
-
-/* hrm, is there a library for this shit? */
-static struct {
- char *name;
- int offset;
-} tz_offsets [] = {
- { "UT", 0 },
- { "GMT", 0 },
- { "EST", -500 }, /* these are all US timezones. bloody yanks */
- { "EDT", -400 },
- { "CST", -600 },
- { "CDT", -500 },
- { "MST", -700 },
- { "MDT", -600 },
- { "PST", -800 },
- { "PDT", -700 },
- { "Z", 0 },
- { "A", -100 },
- { "M", -1200 },
- { "N", 100 },
- { "Y", 1200 },
-};
-
-static char *tm_months[] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
-};
-
-static char *tm_days[] = {
- "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
-};
-
-
-struct _date_token {
- struct _date_token *next;
- const unsigned char *start;
- unsigned int len;
- unsigned int mask;
-};
-
-/* This is where it gets ugly... */
-static struct _date_token *
-datetok (const char *date)
-{
- struct _date_token *tokens = NULL, *token, *tail = (struct _date_token *) &tokens;
- const unsigned char *start, *end;
- unsigned int mask;
-
- start = date;
- while (*start) {
- /* kill leading whitespace */
- for ( ; *start && isspace ((int) *start); start++);
-
- mask = 0;
-
- /* find the end of this token */
- for (end = start; *end && !strchr ("-/,\t\r\n ", *end); end++) {
- mask |= datetok_table[*end];
- }
-
- if (end != start) {
- token = g_malloc (sizeof (struct _date_token));
- token->next = NULL;
- token->start = start;
- token->len = end - start;
- token->mask = mask;
-
- tail->next = token;
- tail = token;
- }
-
- if (*end)
- start = end + 1;
- else
- break;
- }
-
- return tokens;
-}
-
-static int
-decode_int (const unsigned char *in, unsigned int inlen)
-{
- register const unsigned char *inptr;
- const unsigned char *inend;
- int sign = 1, val = 0;
-
- inptr = in;
- inend = in + inlen;
-
- if (*inptr == '-') {
- sign = -1;
- inptr++;
- } else if (*inptr == '+')
- inptr++;
-
- for ( ; inptr < inend; inptr++) {
- if (!isdigit ((int) *inptr))
- return -1;
- else
- val = (val * 10) + (*inptr - '0');
- }
-
- val *= sign;
-
- return val;
-}
-
-static int
-get_wday (const unsigned char *in, unsigned int inlen)
-{
- int wday;
-
- if (inlen < 3)
- return -1;
-
- for (wday = 0; wday < 7; wday++)
- if (!strncasecmp (in, tm_days[wday], 3))
- return wday;
-
- return -1; /* unknown week day */
-}
-
-static int
-get_mday (const unsigned char *in, unsigned int inlen)
-{
- int mday;
-
- mday = decode_int (in, inlen);
-
- if (mday < 0 || mday > 31)
- mday = -1;
-
- return mday;
-}
-
-static int
-get_month (const unsigned char *in, unsigned int inlen)
-{
- int i;
-
- if (inlen < 3)
- return -1;
-
- for (i = 0; i < 12; i++)
- if (!strncasecmp (in, tm_months[i], 3))
- return i;
-
- return -1; /* unknown month */
-}
-
-static int
-get_year (const unsigned char *in, unsigned int inlen)
-{
- int year;
-
- year = decode_int (in, inlen);
- if (year == -1)
- return -1;
-
- if (year < 100)
- year += (year < 70) ? 2000 : 1900;
-
- if (year < 1969)
- return -1;
-
- return year;
-}
-
-static gboolean
-get_time (const unsigned char *in, unsigned int inlen, int *hour, int *min, int *sec)
-{
- register const unsigned char *inptr;
- const unsigned char *inend;
- int *val, colons = 0;
-
- *hour = *min = *sec = 0;
-
- inend = in + inlen;
- val = hour;
- for (inptr = in; inptr < inend; inptr++) {
- if (*inptr == ':') {
- colons++;
- switch (colons) {
- case 1:
- val = min;
- break;
- case 2:
- val = sec;
- break;
- default:
- return FALSE;
- }
- } else if (!isdigit ((int) *inptr))
- return FALSE;
- else
- *val = (*val * 10) + (*inptr - '0');
- }
-
- return TRUE;
-}
-
-static int
-get_tzone (struct _date_token **token)
-{
- int i;
-
- for (i = 0; *token && i < 2; *token = (*token)->next, i++) {
- const unsigned char *inptr = (*token)->start;
- unsigned int inlen = (*token)->len;
-
- if (*inptr == '+' || *inptr == '-') {
- return decode_int (inptr, inlen);
- } else {
- int t;
-
- if (*inptr == '(')
- inptr++;
-
- for (t = 0; t < 15; t++) {
- unsigned int len = MIN (strlen (tz_offsets[t].name), inlen - 1);
-
- if (!strncmp (inptr, tz_offsets[t].name, len))
- return tz_offsets[t].offset;
- }
- }
- }
-
- return -1;
-}
-
-/* This is where things get interesting... ;-) */
-
-#define date_token_mask(t) (((struct _date_token *) t)->mask)
-#define is_numeric(t) ((date_token_mask (t) & DATE_TOKEN_NON_NUMERIC) == 0)
-#define is_weekday(t) ((date_token_mask (t) & DATE_TOKEN_NON_WEEKDAY) == 0)
-#define is_month(t) ((date_token_mask (t) & DATE_TOKEN_NON_MONTH) == 0)
-#define is_time(t) (((date_token_mask (t) & DATE_TOKEN_NON_TIME) == 0) && (date_token_mask (t) & DATE_TOKEN_HAS_COLON))
-#define is_tzone_alpha(t) ((date_token_mask (t) & DATE_TOKEN_NON_TIMEZONE_ALPHA) == 0)
-#define is_tzone_numeric(t) (((date_token_mask (t) & DATE_TOKEN_NON_TIMEZONE_NUMERIC) == 0) && (date_token_mask (t) & DATE_TOKEN_HAS_SIGN))
-#define is_tzone(t) (is_tzone_alpha (t) || is_tzone_numeric (t))
-
-static time_t
-decode_broken_date (struct _date_token *tokens, int *tzone)
-{
- gboolean got_wday, got_month, got_tzone;
- int hour, min, sec, offset, n;
- struct _date_token *token;
- struct tm tm;
- time_t time;
-
- memset ((void *) &tm, 0, sizeof (struct tm));
- got_wday = got_month = got_tzone = FALSE;
- offset = 0;
-
- token = tokens;
- while (token) {
- if (is_weekday (token) && !got_wday) {
- if ((n = get_wday (token->start, token->len)) != -1) {
- d(printf ("weekday; "));
- got_wday = TRUE;
- tm.tm_wday = n;
- goto next_token;
- }
- }
-
- if (is_month (token) && !got_month) {
- if ((n = get_month (token->start, token->len)) != -1) {
- d(printf ("month; "));
- got_month = TRUE;
- tm.tm_mon = n;
- goto next_token;
- }
- }
-
- if (is_time (token) && !tm.tm_hour && !tm.tm_min && !tm.tm_sec) {
- if (get_time (token->start, token->len, &hour, &min, &sec)) {
- d(printf ("time; "));
- tm.tm_hour = hour;
- tm.tm_min = min;
- tm.tm_sec = sec;
- goto next_token;
- }
- }
-
- if (is_tzone (token) && !got_tzone) {
- struct _date_token *t = token;
-
- if ((n = get_tzone (&t)) != -1) {
- d(printf ("tzone; "));
- got_tzone = TRUE;
- offset = n;
- goto next_token;
- }
- }
-
- if (is_numeric (token)) {
- if (token->len == 4 && !tm.tm_year) {
- if ((n = get_year (token->start, token->len)) != -1) {
- d(printf ("year; "));
- tm.tm_year = n - 1900;
- goto next_token;
- }
- } else {
- if (!got_month && !got_wday && token->next && is_numeric (token->next)) {
- d(printf ("mon; "));
- n = decode_int (token->start, token->len);
- got_month = TRUE;
- tm.tm_mon = n - 1;
- goto next_token;
- } else if (!tm.tm_mday && (n = get_mday (token->start, token->len)) != -1) {
- d(printf ("mday; "));
- tm.tm_mday = n;
- goto next_token;
- } else if (!tm.tm_year) {
- d(printf ("2-digit year; "));
- n = get_year (token->start, token->len);
- tm.tm_year = n - 1900;
- goto next_token;
- }
- }
- }
-
- d(printf ("???; "));
-
- next_token:
-
- token = token->next;
- }
-
- d(printf ("\n"));
-
- time = e_mktime_utc (&tm);
-
- /* time is now GMT of the time we want, but not offset by the timezone ... */
-
- /* this should convert the time to the GMT equiv time */
- time -= ((offset / 100) * 60 * 60) + (offset % 100) * 60;
-
- if (tzone)
- *tzone = offset;
-
- return time;
-}
-
-
-/**
- * parse_broken_date:
- * @datestr: input date string
- * @saveoffset:
- *
- * Decodes the rfc822/broken date string and saves the GMT offset into
- * @saveoffset if non-NULL.
- *
- * Returns the time_t representation of the date string specified by
- * @in. If 'saveoffset' is non-NULL, the value of the timezone offset
- * will be stored.
- **/
-time_t
-parse_broken_date (const char *datestr, int *saveoffset)
-{
- struct _date_token *token, *tokens;
- time_t date;
-
- tokens = datetok (datestr);
-
- date = decode_broken_date (tokens, saveoffset);
-
- /* cleanup */
- while (tokens) {
- token = tokens;
- tokens = tokens->next;
- g_free (token);
- }
-
- return date;
-}
-
-
-
-
-
-#ifdef DATETOK_STANDALONE
-
-static void
-table_init ()
-{
- int i;
-
- memset (datetok_table, 0, sizeof (datetok_table));
-
- for (i = 0; i < 256; i++) {
- if (!strchr (NUMERIC_CHARS, i))
- datetok_table[i] |= DATE_TOKEN_NON_NUMERIC;
-
- if (!strchr (WEEKDAY_CHARS, i))
- datetok_table[i] |= DATE_TOKEN_NON_WEEKDAY;
-
- if (!strchr (MONTH_CHARS, i))
- datetok_table[i] |= DATE_TOKEN_NON_MONTH;
-
- if (!strchr (TIME_CHARS, i))
- datetok_table[i] |= DATE_TOKEN_NON_TIME;
-
- if (!strchr (TIMEZONE_ALPHA_CHARS, i))
- datetok_table[i] |= DATE_TOKEN_NON_TIMEZONE_ALPHA;
-
- if (!strchr (TIMEZONE_NUMERIC_CHARS, i))
- datetok_table[i] |= DATE_TOKEN_NON_TIMEZONE_NUMERIC;
-
- if (((char) i) == ':')
- datetok_table[i] |= DATE_TOKEN_HAS_COLON;
-
- if (strchr ("+-", i))
- datetok_table[i] |= DATE_TOKEN_HAS_SIGN;
- }
-
- printf ("static unsigned int datetok_table[256] = {");
- for (i = 0; i < 256; i++) {
- if (i % 16 == 0)
- printf ("\n\t");
- printf ("%3d,", datetok_table[i]);
- }
- printf ("\n};\n");
-}
-
-
-int main (int argc, char **argv)
-{
- time_t date;
- int offset;
-
- /*table_init ();*/
-
- date = parse_broken_date (argv[1], &offset);
- printf ("%d; %d\n", date, offset);
-
- return 0;
-}
-
-#endif /* DATETOK_STANDALONE */
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