conv_str

SFL
Version 2.11

`conv_str_day`

#include "sflconv.h"
int
conv_str_day (
    const char *string)

Synopsis

Converts a string to a day. The string contains a day name in English. Only the first three letters of the name are significant. Returns a value 0..6 for Sunday to Saturday, or -1 if the name is not a valid day.

Source Code - (sflcvsd.c)

{
    static
        char *day_name [] =
          { "sun", "mon", "tue", "wed", "thu", "fri", "sat" };
    int
        day;
    char
        day_comp [4];

    /*  Get up to three letters of day name and convert to lower case        */
    strncpy (day_comp, string, 3);
    day_comp [3] = '\0';
    strlwc (day_comp);

    /*  I don't like magic constants, but "7" is pretty safe for now         */
    for (day = 0; day < 7; day++)
        if (streq (day_name [day], day_comp))
            break;

    return (day >= 7? -1: day);
}

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