------------------ strptime ----------------- /* * Copyright (c) 1994 Powerdog Industries. All rights reserved. * * Redistribution and use in source and binary forms, 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. All advertising materials mentioning features or use of this * software must display the following acknowledgement: * This product includes software developed by Powerdog Industries. * 4. The name of Powerdog Industries may not be used to endorse or * promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY POWERDOG INDUSTRIES ``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 POWERDOG INDUSTRIES 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 char copyright[] = "@(#) Copyright (c) 1994 Powerdog Industries. All rights reserved."; static char sccsid[] = "@(#)strptime.c 0.1 (Powerdog) 94/03/27"; #endif /* not lint */ #include #include #include #include #define asizeof(a) (sizeof (a) / sizeof ((a)[0])) #ifndef sun struct dtconv { char *abbrev_month_names[12]; char *month_names[12]; char *abbrev_weekday_names[7]; char *weekday_names[7]; char *time_format; char *sdate_format; char *dtime_format; char *am_string; char *pm_string; char *ldate_format; }; #endif static struct dtconv En_US = { { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }, { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" }, { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" }, { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" }, "%H:%M:%S", "%m/%d/%y", "%a %b %e %T %Z %Y", "AM", "PM", "%A, %B, %e, %Y" }; #ifdef SUNOS4 extern int strncasecmp(); #endif char * strptime(char *buf, char *fmt, struct tm *tm) { char c, *ptr; int i, len; ptr = fmt; while (*ptr != 0) { if (*buf == 0) break; c = *ptr++; if (c != '%') { if (isspace(c)) while (*buf != 0 && isspace(*buf)) buf++; else if (c != *buf++) return 0; continue; } c = *ptr++; switch (c) { case 0: case '%': if (*buf++ != '%') return 0; break; case 'C': buf = strptime(buf, En_US.ldate_format, tm); if (buf == 0) return 0; break; case 'c': buf = strptime(buf, "%x %X", tm); if (buf == 0) return 0; break; case 'D': buf = strptime(buf, "%m/%d/%y", tm); if (buf == 0) return 0; break; case 'R': buf = strptime(buf, "%H:%M", tm); if (buf == 0) return 0; break; case 'r': buf = strptime(buf, "%I:%M:%S %p", tm); if (buf == 0) return 0; break; case 'T': buf = strptime(buf, "%H:%M:%S", tm); if (buf == 0) return 0; break; case 'X': buf = strptime(buf, En_US.time_format, tm); if (buf == 0) return 0; break; case 'x': buf = strptime(buf, En_US.sdate_format, tm); if (buf == 0) return 0; break; case 'j': if (!isdigit(*buf)) return 0; for (i = 0; *buf != 0 && isdigit(*buf); buf++) { i *= 10; i += *buf - '0'; } if (i > 365) return 0; tm->tm_yday = i; break; case 'M': case 'S': if (*buf == 0 || isspace(*buf)) break; if (!isdigit(*buf)) return 0; for (i = 0; *buf != 0 && isdigit(*buf); buf++) { i *= 10; i += *buf - '0'; } if (i > 59) return 0; if (c == 'M') tm->tm_min = i; else tm->tm_sec = i; if (*buf != 0 && isspace(*buf)) while (*ptr != 0 && !isspace(*ptr)) ptr++; break; case 'H': case 'I': case 'k': case 'l': if (!isdigit(*buf)) return 0; for (i = 0; *buf != 0 && isdigit(*buf); buf++) { i *= 10; i += *buf - '0'; } if (c == 'H' || c == 'k') { if (i > 23) return 0; } else if (i > 11) return 0; tm->tm_hour = i; if (*buf != 0 && isspace(*buf)) while (*ptr != 0 && !isspace(*ptr)) ptr++; break; case 'p': len = strlen(En_US.am_string); if (strncasecmp(buf, En_US.am_string, len) == 0) { if (tm->tm_hour > 12) return 0; if (tm->tm_hour == 12) tm->tm_hour = 0; buf += len; break; } len = strlen(En_US.pm_string); if (strncasecmp(buf, En_US.pm_string, len) == 0) { if (tm->tm_hour > 12) return 0; if (tm->tm_hour != 12) tm->tm_hour += 12; buf += len; break; } return 0; case 'A': case 'a': for (i = 0; i < asizeof(En_US.weekday_names); i++) { len = strlen(En_US.weekday_names[i]); if (strncasecmp(buf, En_US.weekday_names[i], len) == 0) break; len = strlen(En_US.abbrev_weekday_names[i]); if (strncasecmp(buf, En_US.abbrev_weekday_names[i], len) == 0) break; } if (i == asizeof(En_US.weekday_names)) return 0; tm->tm_wday = i; buf += len; break; case 'd': case 'e': if (!isdigit(*buf)) return 0; for (i = 0; *buf != 0 && isdigit(*buf); buf++) { i *= 10; i += *buf - '0'; } if (i > 31) return 0; tm->tm_mday = i; if (*buf != 0 && isspace(*buf)) while (*ptr != 0 && !isspace(*ptr)) ptr++; break; case 'B': case 'b': case 'h': for (i = 0; i < asizeof(En_US.month_names); i++) { len = strlen(En_US.month_names[i]); if (strncasecmp(buf, En_US.month_names[i], len) == 0) break; len = strlen(En_US.abbrev_month_names[i]); if (strncasecmp(buf, En_US.abbrev_month_names[i], len) == 0) break; } if (i == asizeof(En_US.month_names)) return 0; tm->tm_mon = i; buf += len; break; case 'm': if (!isdigit(*buf)) return 0; for (i = 0; *buf != 0 && isdigit(*buf); buf++) { i *= 10; i += *buf - '0'; } if (i < 1 || i > 12) return 0; tm->tm_mon = i - 1; if (*buf != 0 && isspace(*buf)) while (*ptr != 0 && !isspace(*ptr)) ptr++; break; case 'Y': case 'y': if (*buf == 0 || isspace(*buf)) break; if (!isdigit(*buf)) return 0; for (i = 0; *buf != 0 && isdigit(*buf); buf++) { i *= 10; i += *buf - '0'; } if (c == 'Y') i -= 1900; if (i < 0) return 0; tm->tm_year = i; if (*buf != 0 && isspace(*buf)) while (*ptr != 0 && !isspace(*ptr)) ptr++; break; } } return buf; }