./Source/roboconfig.c

Configuration/GetParameters [ Functions ]

FUNCTION

Parse a line of text and store the individual words in a Parameters structure. Words are seperated by spaces, the exception are words surrounded by quotes. So:

      aap noot mies "back to the future"

contains four words.

INPUTS

line -- the line of text.
parameters -- the set of parameters

SOURCE

static void GetParameters(
    char *line,
    struct Parameters *parameters )
{
    int                 i;
    int                 n = strlen( line );

    /* Remove any spaces at the end of the line */
    for ( i = n - 1; i >= 0 && utf8_isspace( line[i] ); --i )
    {
        line[i] = '\0';
    }

    assert( i > 0 );            /* If i <= 0 then the line was empty
                                   and that cannot be, because this
                                   is supposed to be a parameter */

    /* Skip any white space at the begin of the line. */
    n = strlen( line );
    for ( i = 0; i < n && utf8_isspace( line[i] ); ++i )
    {
        /* Empty */
    }
    line += i;

    n = strlen( line );
    for ( i = 0; i < n; /* empty */  )
    {
        char               *name = line;

        if ( line[i] == '"' )
        {
            /* It is quoted string, fetch everything until
             * the next quote */
            ++name;             /* skip the double quote */
            for ( ++i; ( i < n ) && ( line[i] != '"' ); ++i )
            {
                /* empty */
            }
            if ( i == n )
            {
                RB_Panic( "Missing quote in your .rc file in line:\n  %s\n",
                          line );
            }
            else
            {
#if defined(__APPLE__)
                /* hacked because of error when compiling on Mac OS X */
                assert( line[i] == 34 );
#else
                assert( line[i] == '"' );
#endif
                line[i] = '\0';
                AddParameter( name, parameters );
            }
        }
        else
        {
            /* a single word, find the next space */
            for ( ; ( i < n ) && !utf8_isspace( line[i] ); ++i )
            {
                /* empty */
            }
            if ( i < n )
            {
                line[i] = '\0';
            }
            AddParameter( name, parameters );
        }
        /* Is there anything left? */
        if ( i < n )
        {
            /* skip any spaces until the next parameter */
            ++i;                /* first skip the nul character */
            line += i;
            n = strlen( line );
            for ( i = 0; ( i < n ) && utf8_isspace( line[i] ); ++i )
            {
                /* empty */
            }
            line += i;
            n = strlen( line );
            i = 0;
        }
    }
}