/*- * SPDX-License-Identifier: BSD-2-Clause * * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #undef lines /* term.h defines this */ /* Width of one month with backward compatibility and in regular mode*/ #define MONTH_WIDTH_B_J 27 #define MONTH_WIDTH_B 20 #define MONTH_WIDTH_R_J 24 #define MONTH_WIDTH_R 18 #define MAX_WIDTH 64 typedef struct date date; struct monthlines { wchar_t name[MAX_WIDTH + 1]; char lines[7][MAX_WIDTH + 1]; char weeks[MAX_WIDTH + 1]; unsigned int extralen[7]; }; 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, 31}}, {"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}}, {"LT", "Lithuania", {1918, 2, 1}}, {"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}}, {"SE", "Sweden", {1753, 2, 17}}, {"TR", "Turkey", {1926, 12, 18}}, {"US", "United States", {1752, 9, 2}}, {"YU", "Yugoslavia", {1919, 3, 4}} }; static 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 */ static 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 */ static 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"; static int flag_nohighlight; /* user doesn't want a highlighted today */ static int flag_weeks; /* user wants number of week */ static int nswitch; /* user defined switch date */ static int nswitchb; /* switch date for backward compatibility */ static int highlightdate; static bool flag_monday; /* user wants week starts on Monday */ static char *center(char *s, char *t, int w); static wchar_t *wcenter(wchar_t *s, wchar_t *t, int w); static int firstday(int y, int m); static void highlight(char *dst, char *src, int len, int *extraletters); static void mkmonthr(int year, int month, int jd_flag, struct monthlines * monthl); static void mkmonthb(int year, int month, int jd_flag, struct monthlines * monthl); static void mkweekdays(struct weekdays * wds); static void monthranger(int year, int m, int jd_flag, int before, int after); static void monthrangeb(int year, int m, int jd_flag, int before, int after); static int parsemonth(const char *s, int *m, int *y); static void printcc(void); static void printeaster(int year, int julian, int orthodox); static date *sdater(int ndays, struct date * d); static date *sdateb(int ndays, struct date * d); static int sndaysr(struct date * d); static int sndaysb(struct date * d); static void usage(void); 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 */ date dt; 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_wholeyear = 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; /* user wants Orthodox easter */ int flag_easter = 0; /* user wants easter date */ int flag_3months = 0; /* user wants 3 month display (-3) */ int flag_after = 0; /* user wants to see months after */ int flag_before = 0; /* user wants to see months before */ int flag_specifiedmonth = 0;/* user wants to see this month (-m) */ int flag_givenmonth = 0; /* user has specified month [n] */ int flag_givenyear = 0; /* user has specified year [n] */ char *cp; /* character pointer */ char *flag_today = NULL; /* debug: use date as being today */ char *flag_month = NULL; /* requested month as string */ char *flag_highlightdate = NULL; /* debug: date to highlight */ int before, after; const char *locale; /* locale to get country code */ flag_nohighlight = 0; flag_weeks = 0; flag_monday = false; /* * 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". */ if (strncmp(basename(argv[0]), "cal", strlen("cal")) == 0) flag_backward = 1; /* Set the switch date to United Kingdom if backwards compatible */ if (flag_backward) nswitchb = ndaysj(&ukswitch); before = after = -1; while ((ch = getopt(argc, argv, "3A:B:Cd:eH:hjJm:Nops:wyM")) != -1) switch (ch) { case '3': flag_3months = 1; break; case 'A': if (flag_after > 0) errx(EX_USAGE, "Double -A specified"); flag_after = strtol(optarg, NULL, 10); if (flag_after <= 0) errx(EX_USAGE, "Argument to -A must be positive"); break; case 'B': if (flag_before > 0) errx(EX_USAGE, "Double -B specified"); flag_before = strtol(optarg, NULL, 10); if (flag_before <= 0) errx(EX_USAGE, "Argument to -B must be positive"); break; case 'J': if (flag_backward) usage(); nswitch = ndaysj(&never); flag_julian_cal = 1; break; case 'C': flag_backward = 1; break; case 'N': flag_backward = 0; break; case 'd': flag_today = optarg; break; case 'H': flag_highlightdate = optarg; break; case 'h': flag_nohighlight = 1; break; case 'e': if (flag_backward) usage(); flag_easter = 1; break; case 'j': flag_julian_day = 1; break; case 'M': flag_monday = true; break; case 'm': if (flag_specifiedmonth) errx(EX_USAGE, "Double -m specified"); flag_month = optarg; flag_specifiedmonth = 1; 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_wholeyear = 1; break; default: usage(); } argc -= optind; argv += optind; switch (argc) { case 2: if (flag_easter) usage(); flag_month = *argv++; flag_givenmonth = 1; m = strtol(flag_month, NULL, 10); /* FALLTHROUGH */ case 1: y = atoi(*argv); if (y < 1 || y > 9999) errx(EX_USAGE, "year `%s' not in range 1..9999", *argv); argv++; flag_givenyear = 1; break; case 0: if (flag_today != NULL) { y = strtol(flag_today, NULL, 10); m = strtol(flag_today + 5, NULL, 10); } else { 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) { if (parsemonth(flag_month, &m, &y)) { errx(EX_USAGE, "%s is neither a month number (1..12) nor a name", flag_month); } } /* * What is not supported: * -3 with -A or -B * -3 displays 3 months, -A and -B change that behaviour. * -3 with -y * -3 displays 3 months, -y says display a whole year. * -3 with a given year but no given month or without -m * -3 displays 3 months, no month specified doesn't make clear * which three months. * -m with a given month * conflicting arguments, both specify the same field. * -y with -m * -y displays the whole year, -m displays a single month. * -y with a given month * -y displays the whole year, the given month displays a single * month. * -y with -A or -B * -y displays the whole year, -A and -B display extra months. */ /* -3 together with -A or -B. */ if (flag_3months && (flag_after || flag_before)) errx(EX_USAGE, "-3 together with -A and -B is not supported."); /* -3 together with -y. */ if (flag_3months && flag_wholeyear) errx(EX_USAGE, "-3 together with -y is not supported."); /* -3 together with givenyear but no givenmonth. */ if (flag_3months && flag_givenyear && !(flag_givenmonth || flag_specifiedmonth)) errx(EX_USAGE, "-3 together with a given year but no given month is " "not supported."); /* -m together with xx xxxx. */ if (flag_specifiedmonth && flag_givenmonth) errx(EX_USAGE, "-m together with a given month is not supported."); /* -y together with -m. */ if (flag_wholeyear && flag_specifiedmonth) errx(EX_USAGE, "-y together with -m is not supported."); /* -y together with xx xxxx. */ if (flag_wholeyear && flag_givenmonth) errx(EX_USAGE, "-y together a given month is not supported."); /* -y together with -A or -B. */ if (flag_wholeyear && (flag_before > 0 || flag_after > 0)) errx(EX_USAGE, "-y together a -A or -B is not supported."); /* The rest should be fine. */ /* Select the period to display, in order of increasing priority .*/ if (flag_wholeyear || (flag_givenyear && !(flag_givenmonth || flag_specifiedmonth))) { m = 1; before = 0; after = 11; } if (flag_givenyear && flag_givenmonth) { before = 0; after = 0; } if (flag_specifiedmonth) { before = 0; after = 0; } if (flag_before) { before = flag_before; } if (flag_after) { after = flag_after; } if (flag_3months) { before = 1; after = 1; } if (after == -1) after = 0; if (before == -1) before = 0; /* Highlight a specified day or today .*/ if (flag_highlightdate != NULL) { dt.y = strtol(flag_highlightdate, NULL, 10); dt.m = strtol(flag_highlightdate + 5, NULL, 10); dt.d = strtol(flag_highlightdate + 8, NULL, 10); } else { time_t t; struct tm *tm1; t = time(NULL); tm1 = localtime(&t); dt.y = tm1->tm_year + 1900; dt.m = tm1->tm_mon + 1; dt.d = tm1->tm_mday; } highlightdate = sndaysb(&dt); /* And now we finally start to calculate and output calendars. */ if (flag_easter) printeaster(y, flag_julian_cal, flag_orthodox); else if (flag_backward) monthrangeb(y, m, flag_julian_day, before, after); else monthranger(y, m, flag_julian_day, before, after); if (ferror(stdout) != 0 || fflush(stdout) != 0) err(1, "stdout"); return (0); } static void usage(void) { fputs( "Usage: cal [general options] [-hjy] [[month] year]\n" " cal [general options] [-hj] [-m month] [year]\n" " ncal [general options] [-hJjpwy] [-s country_code] [[month] year]\n" " ncal [general options] [-hJeo] [year]\n" "General options: [-NCM3] [-A months] [-B months]\n" "For debug the highlighting: [-H yyyy-mm-dd] [-d yyyy-mm]\n", stderr); exit(EX_USAGE); } /* Print the assumed switches for all countries. */ static 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. */ static void printeaster(int y, int julian, int orthodox) { date dt; struct tm tm; char buf[MAX_WIDTH]; 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); } #define MW(mw, me) ((mw) + me) #define DECREASEMONTH(m, y) \ if (--m == 0) { \ m = 12; \ y--; \ } #define INCREASEMONTH(m, y) \ if (++(m) == 13) { \ (m) = 1; \ (y)++; \ } #define M2Y(m) ((m) / 12) #define M2M(m) (1 + (m) % 12) /* Print all months for the period in the range [ before .. y-m .. after ]. */ static void monthrangeb(int y, int m, int jd_flag, int before, int after) { struct monthlines year[12]; struct weekdays wds; char s[MAX_WIDTH], t[MAX_WIDTH]; wchar_t ws[MAX_WIDTH], ws1[MAX_WIDTH]; const char *wdss; int i, j; int mpl; int mw; int m1, m2; int printyearheader; int prevyear = -1; mpl = jd_flag ? 2 : 3; mw = jd_flag ? MONTH_WIDTH_B_J : MONTH_WIDTH_B; wdss = (mpl == 2) ? " " : ""; while (before != 0) { DECREASEMONTH(m, y); before--; after++; } m1 = y * 12 + m - 1; m2 = m1 + after; mkweekdays(&wds); /* * The year header is printed when there are more than 'mpl' months * and if the first month is a multitude of 'mpl'. * If not, it will print the year behind every month. */ printyearheader = (after >= mpl - 1) && (M2M(m1) - 1) % mpl == 0; m = m1; while (m <= m2) { int count = 0; for (i = 0; i != mpl && m + i <= m2; i++) { mkmonthb(M2Y(m + i), M2M(m + i) - 1, jd_flag, year + i); count++; } /* Empty line between two rows of months */ if (m != m1) printf("\n"); /* Year at the top. */ if (printyearheader && M2Y(m) != prevyear) { sprintf(s, "%d", M2Y(m)); printf("%s\n", center(t, s, mpl * mw)); prevyear = M2Y(m); } /* Month names. */ for (i = 0; i < count; i++) if (printyearheader) wprintf(L"%-*ls ", mw, wcenter(ws, year[i].name, mw)); else { swprintf(ws, sizeof(ws)/sizeof(ws[0]), L"%-ls %d", year[i].name, M2Y(m + i)); wprintf(L"%-*ls ", mw, wcenter(ws1, ws, mw)); } printf("\n"); /* Day of the week names. */ for (i = 0; i < count; i++) { wprintf(L"%s%ls%s%ls%s%ls%s%ls%s%ls%s%ls%s%ls ", wdss, wds.names[flag_monday ? 0 : 6], wdss, wds.names[flag_monday ? 1 : 0], wdss, wds.names[flag_monday ? 2 : 1], wdss, wds.names[flag_monday ? 3 : 2], wdss, wds.names[flag_monday ? 4 : 3], wdss, wds.names[flag_monday ? 5 : 4], wdss, wds.names[flag_monday ? 6 : 5]); } printf("\n"); /* And the days of the month. */ for (i = 0; i != 6; i++) { for (j = 0; j < count; j++) printf("%-*s ", MW(mw, year[j].extralen[i]), year[j].lines[i]+1); printf("\n"); } m += mpl; } } static void monthranger(int y, int m, int jd_flag, int before, int after) { struct monthlines year[12]; struct weekdays wds; char s[MAX_WIDTH], t[MAX_WIDTH]; int i, j; int mpl; int mw; int m1, m2; int prevyear = -1; int printyearheader; mpl = jd_flag ? 3 : 4; mw = jd_flag ? MONTH_WIDTH_R_J : MONTH_WIDTH_R; while (before != 0) { DECREASEMONTH(m, y); before--; after++; } m1 = y * 12 + m - 1; m2 = m1 + after; mkweekdays(&wds); /* * The year header is printed when there are more than 'mpl' months * and if the first month is a multitude of 'mpl'. * If not, it will print the year behind every month. */ printyearheader = (after >= mpl - 1) && (M2M(m1) - 1) % mpl == 0; m = m1; while (m <= m2) { int count = 0; for (i = 0; i != mpl && m + i <= m2; i++) { mkmonthr(M2Y(m + i), M2M(m + i) - 1, jd_flag, year + i); count++; } /* Empty line between two rows of months. */ if (m != m1) printf("\n"); /* Year at the top. */ if (printyearheader && M2Y(m) != prevyear) { sprintf(s, "%d", M2Y(m)); printf("%s\n", center(t, s, mpl * mw)); prevyear = M2Y(m); } /* Month names. */ wprintf(L" "); for (i = 0; i < count; i++) if (printyearheader) wprintf(L"%-*ls", mw, year[i].name); else wprintf(L"%-ls %-*d", year[i].name, mw - wcslen(year[i].name) - 1, M2Y(m + i)); printf("\n"); /* And the days of the month. */ for (i = 0; i != 7; i++) { /* Week day */ wprintf(L"%.2ls", wds.names[i]); /* Full months */ for (j = 0; j < count; j++) printf("%-*s", MW(mw, year[j].extralen[i]), year[j].lines[i]); printf("\n"); } /* Week numbers. */ if (flag_weeks) { printf(" "); for (i = 0; i < count; i++) printf("%-*s", mw, year[i].weeks); printf("\n"); } m += mpl; } return; } static void mkmonthr(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, l; /* 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++) { l = 0; for (j = firstm + i, k = 0; j < last; j += 7, k += dw) { if (j >= first) { if (jd_flag) dt.d = j - jan1 + 1; else sdater(j, &dt); if (j == highlightdate && !flag_nohighlight && isatty(STDOUT_FILENO)) highlight(mlines->lines[i] + k, ds + dt.d * dw, dw, &l); else memcpy(mlines->lines[i] + k + l, ds + dt.d * dw, dw); } else memcpy(mlines->lines[i] + k + l, " ", dw); } mlines->lines[i][k + l] = '\0'; mlines->extralen[i] = l; } /* 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'; } } static 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 firstsm; /* sunday or monday of first week of month */ int i, j, k, l; /* 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 firstsm to the day number of sunday or monday of the first week * of this month. (This might be in the last month) */ if (flag_monday) firstsm = first - weekday(first); else firstsm = 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++) { l = 0; for (j = firstsm + 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); if (j == highlightdate && !flag_nohighlight && isatty(STDOUT_FILENO)) highlight(mlines->lines[i] + k, ds + dt.d * dw, dw, &l); else memcpy(mlines->lines[i] + k + l, ds + dt.d * dw, dw); } else memcpy(mlines->lines[i] + k + l, " ", dw); } if (k == 0) mlines->lines[i][1] = '\0'; else mlines->lines[i][k + l] = '\0'; mlines->extralen[i] = l; } } /* Put the local names of weekdays into the wds. */ static void mkweekdays(struct weekdays *wds) { int i, len, width = 0; 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)/sizeof(buf[0]), L"%a", &tm); for (len = 2; len > 0; --len) { if ((width = wcswidth(buf, len)) <= 2) break; } wmemset(wds->names[i], L'\0', 4); if (width == 1) wds->names[i][0] = L' '; wcsncat(wds->names[i], buf, len); wcsncat(wds->names[i], L" ", 1); } } /* * 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!) */ static int firstday(int y, int m) { date dt; int nd; dt.y = y; dt.m = m; dt.d = 1; nd = sndaysr(&dt); for (;;) { sdater(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. */ static int sndaysr(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. */ static int sndaysb(struct date *d) { if (nswitchb < ndaysj(d)) return (ndaysg(d)); else return (ndaysj(d)); } /* Inverse of sndays. */ static struct date * sdater(int nd, struct date *d) { if (nswitch < nd) return (gdate(nd, d)); else return (jdate(nd, d)); } /* Inverse of sndaysb. */ static 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. */ static char * center(char *s, char *t, int w) { char blanks[MAX_WIDTH]; 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. */ static wchar_t * wcenter(wchar_t *s, wchar_t *t, int w) { char blanks[MAX_WIDTH]; memset(blanks, ' ', sizeof(blanks)); swprintf(s, MAX_WIDTH, L"%.*s%ls", (int)(w - wcslen(t)) / 2, blanks, t); return (s); } static int parsemonth(const char *s, int *m, int *y) { int nm, ny; char *cp; struct tm tm; nm = (int)strtol(s, &cp, 10); if (cp != s) { ny = *y; if (*cp == '\0') { ; /* no special action */ } else if (*cp == 'f' || *cp == 'F') { if (nm <= *m) ny++; } else if (*cp == 'p' || *cp == 'P') { if (nm >= *m) ny--; } else return (1); if (nm < 1 || nm > 12) return 1; *m = nm; *y = ny; return (0); } if (strptime(s, "%B", &tm) != NULL || strptime(s, "%b", &tm) != NULL) { *m = tm.tm_mon + 1; return (0); } return (1); } static void highlight(char *dst, char *src, int len, int *extralen) { static int first = 1; static const char *term_so, *term_se; if (first) { static char cbuf[512]; char tbuf[1024], *b; term_se = term_so = NULL; /* On how to highlight on this type of terminal (if any). */ if (isatty(STDOUT_FILENO) && tgetent(tbuf, NULL) == 1) { b = cbuf; term_so = tgetstr("so", &b); term_se = tgetstr("se", &b); } first = 0; } /* * This check is not necessary, should have been handled before calling * this function. */ if (flag_nohighlight) { memcpy(dst, src, len); return; } /* * If it is a real terminal, use the data from the termcap database. */ if (term_so != NULL && term_se != NULL) { /* separator. */ dst[0] = ' '; dst++; /* highlight on. */ memcpy(dst, term_so, strlen(term_so)); dst += strlen(term_so); /* the actual text. (minus leading space) */ len--; src++; memcpy(dst, src, len); dst += len; /* highlight off. */ memcpy(dst, term_se, strlen(term_se)); *extralen = strlen(term_so) + strlen(term_se); return; } /* * Otherwise, print a _, backspace and the letter. */ *extralen = 0; /* skip leading space. */ src++; len--; /* separator. */ dst[0] = ' '; dst++; while (len > 0) { /* _ and backspace. */ memcpy(dst, "_\010", 2); dst += 2; *extralen += 2; /* the character. */ *dst++ = *src++; len--; } return; }