/*- * Copyright (c) 1997 Wolfgang Helbig * All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR 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. */ #ifndef lint static const char rcsid[] = "$FreeBSD$"; #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include /* Width of one month with backward compatibility */ #define MONTH_WIDTH_B_J 27 #define MONTH_WIDTH_B 20 #define MONTH_WIDTH_J 24 #define MONTH_WIDTH 18 #define MAX_WIDTH 28 typedef struct date date; struct monthlines { wchar_t name[MAX_WIDTH + 1]; char lines[7][MAX_WIDTH + 1]; char weeks[MAX_WIDTH + 1]; }; struct weekdays { wchar_t names[7][4]; }; /* The switches from Julian to Gregorian in some countries */ static struct djswitch { const char *cc; /* Country code according to ISO 3166 */ const char *nm; /* Name of country */ date dt; /* Last day of Julian calendar */ } switches[] = { {"AL", "Albania", {1912, 11, 30}}, {"AT", "Austria", {1583, 10, 5}}, {"AU", "Australia", {1752, 9, 2}}, {"BE", "Belgium", {1582, 12, 14}}, {"BG", "Bulgaria", {1916, 3, 18}}, {"CA", "Canada", {1752, 9, 2}}, {"CH", "Switzerland", {1655, 2, 28}}, {"CN", "China", {1911, 12, 18}}, {"CZ", "Czech Republic",{1584, 1, 6}}, {"DE", "Germany", {1700, 2, 18}}, {"DK", "Denmark", {1700, 2, 18}}, {"ES", "Spain", {1582, 10, 4}}, {"FI", "Finland", {1753, 2, 17}}, {"FR", "France", {1582, 12, 9}}, {"GB", "United Kingdom",{1752, 9, 2}}, {"GR", "Greece", {1924, 3, 9}}, {"HU", "Hungary", {1587, 10, 21}}, {"IS", "Iceland", {1700, 11, 16}}, {"IT", "Italy", {1582, 10, 4}}, {"JP", "Japan", {1918, 12, 18}}, {"LI", "Lithuania", {1918, 2, 1}}, {"LN", "Latin", {9999, 05, 31}}, {"LU", "Luxembourg", {1582, 12, 14}}, {"LV", "Latvia", {1918, 2, 1}}, {"NL", "Netherlands", {1582, 12, 14}}, {"NO", "Norway", {1700, 2, 18}}, {"PL", "Poland", {1582, 10, 4}}, {"PT", "Portugal", {1582, 10, 4}}, {"RO", "Romania", {1919, 3, 31}}, {"RU", "Russia", {1918, 1, 31}}, {"SI", "Slovenia", {1919, 3, 4}}, {"SW", "Sweden", {1753, 2, 17}}, {"TR", "Turkey", {1926, 12, 18}}, {"US", "United States", {1752, 9, 2}}, {"YU", "Yugoslavia", {1919, 3, 4}} }; struct djswitch *dftswitch = switches + sizeof(switches) / sizeof(struct djswitch) - 2; /* default switch (should be "US") */ /* Table used to print day of month and week numbers */ char daystr[] = " 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15" " 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31" " 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47" " 48 49 50 51 52 53"; /* Table used to print day of year and week numbers */ char jdaystr[] = " 1 2 3 4 5 6 7 8 9" " 10 11 12 13 14 15 16 17 18 19" " 20 21 22 23 24 25 26 27 28 29" " 30 31 32 33 34 35 36 37 38 39" " 40 41 42 43 44 45 46 47 48 49" " 50 51 52 53 54 55 56 57 58 59" " 60 61 62 63 64 65 66 67 68 69" " 70 71 72 73 74 75 76 77 78 79" " 80 81 82 83 84 85 86 87 88 89" " 90 91 92 93 94 95 96 97 98 99" " 100 101 102 103 104 105 106 107 108 109" " 110 111 112 113 114 115 116 117 118 119" " 120 121 122 123 124 125 126 127 128 129" " 130 131 132 133 134 135 136 137 138 139" " 140 141 142 143 144 145 146 147 148 149" " 150 151 152 153 154 155 156 157 158 159" " 160 161 162 163 164 165 166 167 168 169" " 170 171 172 173 174 175 176 177 178 179" " 180 181 182 183 184 185 186 187 188 189" " 190 191 192 193 194 195 196 197 198 199" " 200 201 202 203 204 205 206 207 208 209" " 210 211 212 213 214 215 216 217 218 219" " 220 221 222 223 224 225 226 227 228 229" " 230 231 232 233 234 235 236 237 238 239" " 240 241 242 243 244 245 246 247 248 249" " 250 251 252 253 254 255 256 257 258 259" " 260 261 262 263 264 265 266 267 268 269" " 270 271 272 273 274 275 276 277 278 279" " 280 281 282 283 284 285 286 287 288 289" " 290 291 292 293 294 295 296 297 298 299" " 300 301 302 303 304 305 306 307 308 309" " 310 311 312 313 314 315 316 317 318 319" " 320 321 322 323 324 325 326 327 328 329" " 330 331 332 333 334 335 336 337 338 339" " 340 341 342 343 344 345 346 347 348 349" " 350 351 352 353 354 355 356 357 358 359" " 360 361 362 363 364 365 366"; int flag_weeks; /* user wants number of week */ int nswitch; /* user defined switch date */ int nswitchb; /* switch date for backward compatibility */ char *center(char *s, char *t, int w); wchar_t *wcenter(wchar_t *s, wchar_t *t, int w); void mkmonth(int year, int month, int jd_flag, struct monthlines * monthl); void mkmonthb(int year, int month, int jd_flag, struct monthlines * monthl); void mkweekdays(struct weekdays * wds); int parsemonth(const char *s); void printcc(void); void printeaster(int year, int julian, int orthodox); void printmonth(int year, int month, int jd_flag); void printmonthb(int year, int month, int jd_flag); void printyear(int year, int jd_flag); void printyearb(int year, int jd_flag); int firstday(int y, int m); date *sdate(int ndays, struct date * d); date *sdateb(int ndays, struct date * d); int sndays(struct date * d); int sndaysb(struct date * d); static void usage(void); int weekdayb(int nd); int main(int argc, char *argv[]) { struct djswitch *p, *q; /* to search user defined switch date */ date never = {10000, 1, 1}; /* outside valid range of dates */ date ukswitch = {1752, 9, 2};/* switch date for Great Britain */ int ch; /* holds the option character */ int m = 0; /* month */ int y = 0; /* year */ int flag_backward = 0; /* user called cal--backward compat. */ int flag_hole_year = 0; /* user wants the whole year */ int flag_julian_cal = 0; /* user wants Julian Calendar */ int flag_julian_day = 0; /* user wants the Julian day * numbers */ int flag_orthodox = 0; /* use wants Orthodox easter */ int flag_easter = 0; /* use wants easter date */ char *cp; /* character pointer */ char *flag_month = NULL; /* requested month as string */ const char *locale; /* locale to get country code */ /* * Use locale to determine the country code, * and use the country code to determine the default * switchdate and date format from the switches table. */ if (setlocale(LC_ALL, "") == NULL) warn("setlocale"); locale = setlocale(LC_TIME, NULL); if (locale == NULL || strcmp(locale, "C") == 0 || strcmp(locale, "POSIX") == 0 || strcmp(locale, "ASCII") == 0 || strcmp(locale, "US-ASCII") == 0) locale = "_US"; q = switches + sizeof(switches) / sizeof(struct djswitch); for (p = switches; p != q; p++) if ((cp = strstr(locale, p->cc)) != NULL && *(cp - 1) == '_') break; if (p == q) { nswitch = ndaysj(&dftswitch->dt); } else { nswitch = ndaysj(&p->dt); dftswitch = p; } /* * Get the filename portion of argv[0] and set flag_backward if * this program is called "cal". */ cp = strrchr(argv[0], '/'); cp = (cp == NULL) ? argv[0] : cp + 1; if (strcmp("cal", cp) == 0) flag_backward = 1; /* Set the switch date to United Kingdom if backwards compatible */ if (flag_backward) nswitchb = ndaysj(&ukswitch); while ((ch = getopt(argc, argv, "Jejm:ops:wy")) != -1) switch (ch) { case 'J': if (flag_backward) usage(); nswitch = ndaysj(&never); flag_julian_cal = 1; break; case 'e': if (flag_backward) usage(); flag_easter = 1; break; case 'j': flag_julian_day = 1; break; case 'm': flag_month = optarg; break; case 'o': if (flag_backward) usage(); flag_orthodox = 1; flag_easter = 1; break; case 'p': if (flag_backward) usage(); printcc(); return (0); break; case 's': if (flag_backward) usage(); q = switches + sizeof(switches) / sizeof(struct djswitch); for (p = switches; p != q && strcmp(p->cc, optarg) != 0; p++) ; if (p == q) errx(EX_USAGE, "%s: invalid country code", optarg); nswitch = ndaysj(&(p->dt)); break; case 'w': if (flag_backward) usage(); flag_weeks = 1; break; case 'y': flag_hole_year = 1; break; default: usage(); } argc -= optind; argv += optind; switch (argc) { case 2: if (flag_easter) usage(); flag_month = *argv++; /* FALLTHROUGH */ case 1: y = atoi(*argv++); if (y < 1 || y > 9999) errx(EX_USAGE, "year %d not in range 1..9999", y); break; case 0: { time_t t; struct tm *tm; t = time(NULL); tm = localtime(&t); y = tm->tm_year + 1900; m = tm->tm_mon + 1; } break; default: usage(); } if (flag_month != NULL) { m = parsemonth(flag_month); if (m < 1 || m > 12) errx(EX_USAGE, "%s is neither a month number (1..12) nor a name", flag_month); } if (flag_easter) printeaster(y, flag_julian_cal, flag_orthodox); else if (argc == 1 || flag_hole_year) if (flag_backward) printyearb(y, flag_julian_day); else printyear(y, flag_julian_day); else if (flag_backward) printmonthb(y, m, flag_julian_day); else printmonth(y, m, flag_julian_day); return (0); } static void usage(void) { fputs( "usage: cal [-jy] [[month] year]\n" " cal [-j] [-m month] [year]\n" " ncal [-Jjpwy] [-s country_code] [[month] year]\n" " ncal [-Jeo] [year]\n", stderr); exit(EX_USAGE); } /* print the assumed switches for all countries */ void printcc(void) { struct djswitch *p; int n; /* number of lines to print */ int m; /* offset from left to right table entry on the same line */ #define FSTR "%c%s %-15s%4d-%02d-%02d" #define DFLT(p) ((p) == dftswitch ? '*' : ' ') #define FSTRARG(p) DFLT(p), (p)->cc, (p)->nm, (p)->dt.y, (p)->dt.m, (p)->dt.d n = sizeof(switches) / sizeof(struct djswitch); m = (n + 1) / 2; n /= 2; for (p = switches; p != switches + n; p++) printf(FSTR" "FSTR"\n", FSTRARG(p), FSTRARG(p+m)); if (m != n) printf(FSTR"\n", FSTRARG(p)); } /* print the date of easter sunday */ void printeaster(int y, int julian, int orthodox) { date dt; struct tm tm; char buf[80]; static int d_first = -1; if (d_first < 0) d_first = (*nl_langinfo(D_MD_ORDER) == 'd'); /* force orthodox easter for years before 1583 */ if (y < 1583) orthodox = 1; if (orthodox) if (julian) easteroj(y, &dt); else easterog(y, &dt); else easterg(y, &dt); memset(&tm, 0, sizeof(tm)); tm.tm_year = dt.y - 1900; tm.tm_mon = dt.m - 1; tm.tm_mday = dt.d; strftime(buf, sizeof(buf), d_first ? "%e %B %Y" : "%B %e %Y", &tm); printf("%s\n", buf); } void printmonth(int y, int m, int jd_flag) { struct monthlines month; struct weekdays wds; int i; mkmonth(y, m - 1, jd_flag, &month); mkweekdays(&wds); printf(" %ls %d\n", month.name, y); for (i = 0; i != 7; i++) printf("%.2ls%s\n", wds.names[i], month.lines[i]); if (flag_weeks) printf(" %s\n", month.weeks); } void printmonthb(int y, int m, int jd_flag) { struct monthlines month; struct weekdays wds; wchar_t s[MAX_WIDTH], t[MAX_WIDTH]; int i; int mw; mkmonthb(y, m - 1, jd_flag, &month); mkweekdays(&wds); mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; swprintf(s, MAX_WIDTH, L"%ls %d", month.name, y); wprintf(L"%ls\n", wcenter(t, s, mw)); if (jd_flag) wprintf(L" %ls %ls %ls %ls %ls %ls %.2ls\n", wds.names[6], wds.names[0], wds.names[1], wds.names[2], wds.names[3], wds.names[4], wds.names[5]); else wprintf(L"%ls%ls%ls%ls%ls%ls%.2ls\n", wds.names[6], wds.names[0], wds.names[1], wds.names[2], wds.names[3], wds.names[4], wds.names[5]); for (i = 0; i != 6; i++) printf("%s\n", month.lines[i]+1); } void printyear(int y, int jd_flag) { struct monthlines year[12]; struct weekdays wds; char s[80], t[80]; int i, j; int mpl; int mw; for (i = 0; i != 12; i++) mkmonth(y, i, jd_flag, year + i); mkweekdays(&wds); mpl = jd_flag ? 3 : 4; mw = jd_flag ? MONTH_WIDTH_J : MONTH_WIDTH; sprintf(s, "%d", y); printf("%s\n", center(t, s, mpl * mw)); for (j = 0; j != 12; j += mpl) { printf(" %-*ls%-*ls", mw, year[j].name, mw, year[j + 1].name); if (mpl == 3) printf("%ls\n", year[j + 2].name); else printf("%-*ls%ls\n", mw, year[j + 2].name, year[j + 3].name); for (i = 0; i != 7; i++) { printf("%.2ls%-*s%-*s", wds.names[i], mw, year[j].lines[i], mw, year[j + 1].lines[i]); if (mpl == 3) printf("%s\n", year[j + 2].lines[i]); else printf("%-*s%s\n", mw, year[j + 2].lines[i], year[j + 3].lines[i]); } if (flag_weeks) { if (mpl == 3) printf(" %-*s%-*s%-s\n", mw, year[j].weeks, mw, year[j + 1].weeks, year[j + 2].weeks); else printf(" %-*s%-*s%-*s%-s\n", mw, year[j].weeks, mw, year[j + 1].weeks, mw, year[j + 2].weeks, year[j + 3].weeks); } } } void printyearb(int y, int jd_flag) { struct monthlines year[12]; struct weekdays wds; char s[80], t[80]; wchar_t ws[80], wt[80]; int i, j; int mpl; int mw; for (i = 0; i != 12; i++) mkmonthb(y, i, jd_flag, year + i); mkweekdays(&wds); mpl = jd_flag ? 2 : 3; mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; sprintf(s, "%d", y); printf("%s\n\n", center(t, s, mw * mpl + mpl)); for (j = 0; j != 12; j += mpl) { printf("%-*ls ", mw, wcenter(ws, year[j].name, mw)); if (mpl == 2) printf("%ls\n", wcenter(ws, year[j + 1].name, mw)); else printf("%-*ls %ls\n", mw, wcenter(ws, year[j + 1].name, mw), wcenter(wt, year[j + 2].name, mw)); if (mpl == 2) wprintf(L" %ls %ls %ls %ls %ls %ls %ls " " %ls %ls %ls %ls %ls %ls %.2ls\n", wds.names[6], wds.names[0], wds.names[1], wds.names[2], wds.names[3], wds.names[4], wds.names[5], wds.names[6], wds.names[0], wds.names[1], wds.names[2], wds.names[3], wds.names[4], wds.names[5]); else wprintf(L"%ls%ls%ls%ls%ls%ls%ls " "%ls%ls%ls%ls%ls%ls%ls " "%ls%ls%ls%ls%ls%ls%.2ls\n", wds.names[6], wds.names[0], wds.names[1], wds.names[2], wds.names[3], wds.names[4], wds.names[5], wds.names[6], wds.names[0], wds.names[1], wds.names[2], wds.names[3], wds.names[4], wds.names[5], wds.names[6], wds.names[0], wds.names[1], wds.names[2], wds.names[3], wds.names[4], wds.names[5]); for (i = 0; i != 6; i++) { if (mpl == 2) printf("%-*s %s\n", mw, year[j].lines[i]+1, year[j + 1].lines[i]+1); else printf("%-*s %-*s %s\n", mw, year[j].lines[i]+1, mw, year[j + 1].lines[i]+1, year[j + 2].lines[i]+1); } } } void mkmonth(int y, int m, int jd_flag, struct monthlines *mlines) { struct tm tm; /* for strftime printing local names of * months */ date dt; /* handy date */ int dw; /* width of numbers */ int first; /* first day of month */ int firstm; /* first day of first week of month */ int i, j, k; /* just indices */ int last; /* the first day of next month */ int jan1 = 0; /* the first day of this year */ char *ds; /* pointer to day strings (daystr or * jdaystr) */ /* Set name of month. */ memset(&tm, 0, sizeof(tm)); tm.tm_mon = m; wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]), L"%OB", &tm); mlines->name[0] = towupper(mlines->name[0]); /* * Set first and last to the day number of the first day of this * month and the first day of next month respectively. Set jan1 to * the day number of the first day of this year. */ first = firstday(y, m + 1); if (m == 11) last = firstday(y + 1, 1); else last = firstday(y, m + 2); if (jd_flag) jan1 = firstday(y, 1); /* * Set firstm to the day number of monday of the first week of * this month. (This might be in the last month) */ firstm = first - weekday(first); /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ if (jd_flag) { ds = jdaystr; dw = 4; } else { ds = daystr; dw = 3; } /* * Fill the lines with day of month or day of year (julian day) * line index: i, each line is one weekday. column index: j, each * column is one day number. print column index: k. */ for (i = 0; i != 7; i++) { for (j = firstm + i, k = 0; j < last; j += 7, k += dw) if (j >= first) { if (jd_flag) dt.d = j - jan1 + 1; else sdate(j, &dt); memcpy(mlines->lines[i] + k, ds + dt.d * dw, dw); } else memcpy(mlines->lines[i] + k, " ", dw); mlines->lines[i][k] = '\0'; } /* fill the weeknumbers */ if (flag_weeks) { for (j = firstm, k = 0; j < last; k += dw, j += 7) if (j <= nswitch) memset(mlines->weeks + k, ' ', dw); else memcpy(mlines->weeks + k, ds + week(j, &i)*dw, dw); mlines->weeks[k] = '\0'; } } void mkmonthb(int y, int m, int jd_flag, struct monthlines *mlines) { struct tm tm; /* for strftime printing local names of * months */ date dt; /* handy date */ int dw; /* width of numbers */ int first; /* first day of month */ int firsts; /* sunday of first week of month */ int i, j, k; /* just indices */ int jan1 = 0; /* the first day of this year */ int last; /* the first day of next month */ char *ds; /* pointer to day strings (daystr or * jdaystr) */ /* Set ds (daystring) and dw (daywidth) according to the jd_flag */ if (jd_flag) { ds = jdaystr; dw = 4; } else { ds = daystr; dw = 3; } /* Set name of month centered */ memset(&tm, 0, sizeof(tm)); tm.tm_mon = m; wcsftime(mlines->name, sizeof(mlines->name) / sizeof(mlines->name[0]), L"%OB", &tm); mlines->name[0] = towupper(mlines->name[0]); /* * Set first and last to the day number of the first day of this * month and the first day of next month respectively. Set jan1 to * the day number of Jan 1st of this year. */ dt.y = y; dt.m = m + 1; dt.d = 1; first = sndaysb(&dt); if (m == 11) { dt.y = y + 1; dt.m = 1; dt.d = 1; } else { dt.y = y; dt.m = m + 2; dt.d = 1; } last = sndaysb(&dt); if (jd_flag) { dt.y = y; dt.m = 1; dt.d = 1; jan1 = sndaysb(&dt); } /* * Set firsts to the day number of sunday of the first week of * this month. (This might be in the last month) */ firsts = first - (weekday(first)+1) % 7; /* * Fill the lines with day of month or day of year (Julian day) * line index: i, each line is one week. column index: j, each * column is one day number. print column index: k. */ for (i = 0; i != 6; i++) { for (j = firsts + 7 * i, k = 0; j < last && k != dw * 7; j++, k += dw) if (j >= first) { if (jd_flag) dt.d = j - jan1 + 1; else sdateb(j, &dt); memcpy(mlines->lines[i] + k, ds + dt.d * dw, dw); } else memcpy(mlines->lines[i] + k, " ", dw); if (k == 0) mlines->lines[i][1] = '\0'; else mlines->lines[i][k] = '\0'; } } /* Put the local names of weekdays into the wds */ void mkweekdays(struct weekdays *wds) { int i, len; struct tm tm; wchar_t buf[20]; memset(&tm, 0, sizeof(tm)); for (i = 0; i != 7; i++) { tm.tm_wday = (i+1) % 7; wcsftime(buf, sizeof(buf), L"%a", &tm); len = wcslen(buf); if (len > 2) len = 2; wcscpy(wds->names[i], L" "); wcsncpy(wds->names[i] + 2 - len, buf, len); } } /* * Compute the day number of the first * existing date after the first day in month. * (the first day in month and even the month might not exist!) */ int firstday(int y, int m) { date dt; int nd; dt.y = y; dt.m = m; dt.d = 1; nd = sndays(&dt); for (;;) { sdate(nd, &dt); if ((dt.m >= m && dt.y == y) || dt.y > y) return (nd); else nd++; } /* NEVER REACHED */ } /* * Compute the number of days from date, obey the local switch from * Julian to Gregorian if specified by the user. */ int sndays(struct date *d) { if (nswitch != 0) if (nswitch < ndaysj(d)) return (ndaysg(d)); else return (ndaysj(d)); else return ndaysg(d); } /* * Compute the number of days from date, obey the switch from * Julian to Gregorian as used by UK and her colonies. */ int sndaysb(struct date *d) { if (nswitchb < ndaysj(d)) return (ndaysg(d)); else return (ndaysj(d)); } /* Inverse of sndays */ struct date * sdate(int nd, struct date *d) { if (nswitch < nd) return (gdate(nd, d)); else return (jdate(nd, d)); } /* Inverse of sndaysb */ struct date * sdateb(int nd, struct date *d) { if (nswitchb < nd) return (gdate(nd, d)); else return (jdate(nd, d)); } /* Center string t in string s of length w by putting enough leading blanks */ char * center(char *s, char *t, int w) { char blanks[80]; memset(blanks, ' ', sizeof(blanks)); sprintf(s, "%.*s%s", (int)(w - strlen(t)) / 2, blanks, t); return (s); } /* Center string t in string s of length w by putting enough leading blanks */ wchar_t * wcenter(wchar_t *s, wchar_t *t, int w) { char blanks[80]; memset(blanks, ' ', sizeof(blanks)); swprintf(s, MAX_WIDTH, L"%.*s%ls", (int)(w - wcslen(t)) / 2, blanks, t); return (s); } int parsemonth(const char *s) { int v; char *cp; struct tm tm; v = (int)strtol(s, &cp, 10); if (cp != s) return (v); if (strptime(s, "%B", &tm) != NULL) return (tm.tm_mon + 1); if (strptime(s, "%b", &tm) != NULL) return (tm.tm_mon + 1); return (0); }