strptime？

Question

私はLinuxでうまく動作するこの本当に素晴らしいアプリを書いた。

strptime（）を使用します。 Windowsはこれを持っていません。

これに対応するWindowsの選択肢はありますか？

私の同僚はこのアプリを使用する必要があります。

（私は無駄にすでにそれをグーグルで試してみました）

Answer 1

私はマイクロソフトCランタイムライブラリで、それの欠如を補うために、Windows上で使うのstrptimeを書かれています。 はここにある：この関数を書くとき、私はオンラインマニュアルページman strptime(3)呼ば

#include <stdio.h> 
#include <stdlib.h> 
#include <string.h> 
#include <time.h> 
#include <ctype.h> 

#ifdef _MSC_VER 
const char * strp_weekdays[] = 
    { "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday"}; 
const char * strp_monthnames[] = 
    { "january", "february", "march", "april", "may", "june", "july", "august", "september", "october", "november", "december"}; 
bool strp_atoi(const char * & s, int & result, int low, int high, int offset) 
    { 
    bool worked = false; 
    char * end; 
    unsigned long num = strtoul(s, & end, 10); 
    if (num >= (unsigned long)low && num <= (unsigned long)high) 
     { 
     result = (int)(num + offset); 
     s = end; 
     worked = true; 
     } 
    return worked; 
    } 
char * strptime(const char *s, const char *format, struct tm *tm) 
    { 
    bool working = true; 
    while (working && *format && *s) 
     { 
     switch (*format) 
      { 
     case '%': 
      { 
      ++format; 
      switch (*format) 
       { 
      case 'a': 
      case 'A': // weekday name 
       tm->tm_wday = -1; 
       working = false; 
       for (size_t i = 0; i < 7; ++ i) 
        { 
        size_t len = strlen(strp_weekdays[i]); 
        if (!strnicmp(strp_weekdays[i], s, len)) 
         { 
         tm->tm_wday = i; 
         s += len; 
         working = true; 
         break; 
         } 
        else if (!strnicmp(strp_weekdays[i], s, 3)) 
         { 
         tm->tm_wday = i; 
         s += 3; 
         working = true; 
         break; 
         } 
        } 
       break; 
      case 'b': 
      case 'B': 
      case 'h': // month name 
       tm->tm_mon = -1; 
       working = false; 
       for (size_t i = 0; i < 12; ++ i) 
        { 
        size_t len = strlen(strp_monthnames[i]); 
        if (!strnicmp(strp_monthnames[i], s, len)) 
         { 
         tm->tm_mon = i; 
         s += len; 
         working = true; 
         break; 
         } 
        else if (!strnicmp(strp_monthnames[i], s, 3)) 
         { 
         tm->tm_mon = i; 
         s += 3; 
         working = true; 
         break; 
         } 
        } 
       break; 
      case 'd': 
      case 'e': // day of month number 
       working = strp_atoi(s, tm->tm_mday, 1, 31, 0); 
       break; 
      case 'D': // %m/%d/%y 
       { 
       const char * s_save = s; 
       working = strp_atoi(s, tm->tm_mon, 1, 12, -1); 
       if (working && *s == '/') 
        { 
        ++ s; 
        working = strp_atoi(s, tm->tm_mday, 1, 31, 0); 
        if (working && *s == '/') 
         { 
         ++ s; 
         working = strp_atoi(s, tm->tm_year, 0, 99, 0); 
         if (working && tm->tm_year < 69) 
          tm->tm_year += 100; 
         } 
        } 
       if (!working) 
        s = s_save; 
       } 
       break; 
      case 'H': // hour 
       working = strp_atoi(s, tm->tm_hour, 0, 23, 0); 
       break; 
      case 'I': // hour 12-hour clock 
       working = strp_atoi(s, tm->tm_hour, 1, 12, 0); 
       break; 
      case 'j': // day number of year 
       working = strp_atoi(s, tm->tm_yday, 1, 366, -1); 
       break; 
      case 'm': // month number 
       working = strp_atoi(s, tm->tm_mon, 1, 12, -1); 
       break; 
      case 'M': // minute 
       working = strp_atoi(s, tm->tm_min, 0, 59, 0); 
       break; 
      case 'n': // arbitrary whitespace 
      case 't': 
       while (isspace((int)*s)) 
        ++s; 
       break; 
      case 'p': // am/pm 
       if (!strnicmp(s, "am", 2)) 
        { // the hour will be 1 -> 12 maps to 12 am, 1 am .. 11 am, 12 noon 12 pm .. 11 pm 
        if (tm->tm_hour == 12) // 12 am == 00 hours 
         tm->tm_hour = 0; 
        s += 2; 
        } 
       else if (!strnicmp(s, "pm", 2)) 
        { 
        if (tm->tm_hour < 12) // 12 pm == 12 hours 
         tm->tm_hour += 12; // 1 pm -> 13 hours, 11 pm -> 23 hours 
        s += 2; 
        } 
       else 
        working = false; 
       break; 
      case 'r': // 12 hour clock %I:%M:%S %p 
       { 
       const char * s_save = s; 
       working = strp_atoi(s, tm->tm_hour, 1, 12, 0); 
       if (working && *s == ':') 
        { 
        ++ s; 
        working = strp_atoi(s, tm->tm_min, 0, 59, 0); 
        if (working && *s == ':') 
         { 
         ++ s; 
         working = strp_atoi(s, tm->tm_sec, 0, 60, 0); 
         if (working && isspace((int)*s)) 
          { 
          ++ s; 
          while (isspace((int)*s)) 
           ++s; 
          if (!strnicmp(s, "am", 2)) 
           { // the hour will be 1 -> 12 maps to 12 am, 1 am .. 11 am, 12 noon 12 pm .. 11 pm 
           if (tm->tm_hour == 12) // 12 am == 00 hours 
            tm->tm_hour = 0; 
           } 
          else if (!strnicmp(s, "pm", 2)) 
           { 
           if (tm->tm_hour < 12) // 12 pm == 12 hours 
            tm->tm_hour += 12; // 1 pm -> 13 hours, 11 pm -> 23 hours 
           } 
          else 
           working = false; 
          } 
         } 
        } 
       if (!working) 
        s = s_save; 
       } 
       break; 
      case 'R': // %H:%M 
       { 
       const char * s_save = s; 
       working = strp_atoi(s, tm->tm_hour, 0, 23, 0); 
       if (working && *s == ':') 
        { 
        ++ s; 
        working = strp_atoi(s, tm->tm_min, 0, 59, 0); 
        } 
       if (!working) 
        s = s_save; 
       } 
       break; 
      case 'S': // seconds 
       working = strp_atoi(s, tm->tm_sec, 0, 60, 0); 
       break; 
      case 'T': // %H:%M:%S 
       { 
       const char * s_save = s; 
       working = strp_atoi(s, tm->tm_hour, 0, 23, 0); 
       if (working && *s == ':') 
        { 
        ++ s; 
        working = strp_atoi(s, tm->tm_min, 0, 59, 0); 
        if (working && *s == ':') 
         { 
         ++ s; 
         working = strp_atoi(s, tm->tm_sec, 0, 60, 0); 
         } 
        } 
       if (!working) 
        s = s_save; 
       } 
       break; 
      case 'w': // weekday number 0->6 sunday->saturday 
       working = strp_atoi(s, tm->tm_wday, 0, 6, 0); 
       break; 
      case 'Y': // year 
       working = strp_atoi(s, tm->tm_year, 1900, 65535, -1900); 
       break; 
      case 'y': // 2-digit year 
       working = strp_atoi(s, tm->tm_year, 0, 99, 0); 
       if (working && tm->tm_year < 69) 
        tm->tm_year += 100; 
       break; 
      case '%': // escaped 
       if (*s != '%') 
        working = false; 
       ++s; 
       break; 
      default: 
       working = false; 
       } 
      } 
      break; 
     case ' ': 
     case '\t': 
     case '\r': 
     case '\n': 
     case '\f': 
     case '\v': 
      // zero or more whitespaces: 
      while (isspace((int)*s)) 
       ++ s; 
      break; 
     default: 
      // match character 
      if (*s != *format) 
       working = false; 
      else 
       ++s; 
      break; 
      } 
     ++format; 
     } 
    return (working?(char *)s:0); 
    } 
#endif // _MSC_VER 

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