X-Git-Url: https://pd.if.org/git/?p=pdclib;a=blobdiff_plain;f=functions%2Ftime%2Fstrftime.c;h=715a321adbde1d8e10edcd73972bc766077a2ad1;hp=2402f8cb82b8963e9c9ddb856142ab09b71c5d56;hb=761281caf431d264d568aec797095ef2c28f3910;hpb=18dee35aba1ae0fcdecb0cd11d4f3c1a0d94b51e

diff --git a/functions/time/strftime.c b/functions/time/strftime.c
index 2402f8c..715a321 100644
--- a/functions/time/strftime.c
+++ b/functions/time/strftime.c
@@ -8,8 +8,176 @@
 
 #ifndef REGTEST
 
-size_t strftime( char * restrict s, size_t maxsize, const char * restrict format, const struct tm * restrict timeptr )
+size_t strftime( char * _PDCLIB_restrict s, size_t maxsize, const char * _PDCLIB_restrict format, const struct tm * _PDCLIB_restrict timeptr )
 {
+    /*
+    If the total number of resulting characters including the terminating null character is not
+    more than maxsize, the strftime function returns the number of characters placed
+    into the array pointed to by s not including the terminating null character.
+    (i.e., < maxsize)
+    */
+    size_t rc = 0;
+
+    while ( rc < maxsize )
+    {
+        if ( *format != '%' )
+        {
+            if ( ( *s++ = *format++ ) == '\0' )
+            {
+                return rc;
+            }
+            else
+            {
+                ++rc;
+            }
+        }
+        else
+        {
+            char flag = 0;
+            switch ( *++format )
+            {
+                case 'E':
+                case 'O':
+                    flag = *format++;
+                    break;
+                default:
+                    /* EMPTY */
+                    break;
+            }
+            switch( *format++ )
+            {
+                case 'a':
+                    /* tm_wday abbreviated */
+                    break;
+                case 'A':
+                    /* tm_wday full */
+                    break;
+                case 'b':
+                case 'h':
+                    /* tm_mon abbreviated */
+                    break;
+                case 'B':
+                    /* tm_mon full */
+                    break;
+                case 'c':
+                    /* locale's date / time representation, %a %b %e %T %Y for C locale */
+                    /* 'E' for locale's alternative representation */
+                    break;
+                case 'C':
+                    /* tm_year divided by 100, truncated to decimal (00-99) */
+                    /* 'E' for base year (period) in locale's alternative representation */
+                    break;
+                case 'd':
+                    /* tm_mday as decimal (01-31) */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'D':
+                    /* %m/%d/%y */
+                    break;
+                case 'e':
+                    /* tm_mday as decimal ( 1-31) */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'F':
+                    /* %Y-%m-%d */
+                    break;
+                case 'g':
+                    /* last 2 digits of the week-based year as decimal (00-99) */
+                    break;
+                case 'G':
+                    /* week-based year as decimal (e.g. 1997) */
+                    break;
+                case 'H':
+                    /* tm_hour as 24h decimal (00-23) */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'I':
+                    /* tm_hour as 12h decimal (01-12) */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'j':
+                    /* tm_yday as decimal (001-366) */
+                    break;
+                case 'm':
+                    /* tm_mon as decimal (01-12) */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'M':
+                    /* tm_min as decimal (00-59) */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'n':
+                    /* newline */
+                    break;
+                case 'p':
+                    /* tm_hour locale's AM/PM designations */
+                    break;
+                case 'r':
+                    /* tm_hour / tm_min / tm_sec as locale's 12-hour clock time, %I:%M:%S %p for C locale */
+                    break;
+                case 'R':
+                    /* %H:%M */
+                    break;
+                case 'S':
+                    /* tm_sec as decimal (00-60) */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 't':
+                    /* tabulator */
+                    break;
+                case 'T':
+                    /* %H:%M:%S */
+                    break;
+                case 'u':
+                    /* tm_wday as decimal (1-7) with Monday == 1 */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'U':
+                    /* week number of the year (first Sunday as the first day of week 1) as decimal (00-53) */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'V':
+                    /* week number as decimal (01-53) */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'w':
+                    /* tm_wday as decimal number (0-6) with Sunday == 0 */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'W':
+                    /* week number of the year (first Monday as the first day of week 1) as decimal (00-53) */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'x':
+                    /* locale's date representation, %m/%d/%y for C locale */
+                    /* 'E' for locale's alternative representation */
+                    break;
+                case 'X':
+                    /* locale's time representation, %T for C locale */
+                    /* 'E' for locale's alternative representation */
+                    break;
+                case 'y':
+                    /* last 2 digits of tm_year as decimal (00-99) */
+                    /* 'E' for offset from %EC (year only) in locale's alternative representation */
+                    /* 'O' for locale's alternative numeric symbols */
+                    break;
+                case 'Y':
+                    /* tm_year as decimal (e.g. 1997) */
+                    /* 'E' for locale's alternative representation */
+                    break;
+                case 'z':
+                    /* tm_isdst / UTC offset in ISO8601 format (e.g. -0430 meaning 4 hours 30 minutes behind Greenwich), or no characters */
+                    break;
+                case 'Z':
+                    /* tm_isdst / locale's time zone name or abbreviation, or no characters */
+                    break;
+                case '%':
+                    /* '%' character */
+                    break;
+            }
+        }
+    }
+
     return 0;
 }
 
@@ -21,7 +189,8 @@ size_t strftime( char * restrict s, size_t maxsize, const char * restrict format
 
 int main( void )
 {
-    return NO_TESTDRIVER;
+    TESTCASE( NO_TESTDRIVER );
+    return TEST_RESULTS;
 }
 
 #endif