BMUG PD-ROM A/PD-ROM A.iso/Programming/Programming Help/Alpha.4.01/ACMDS/Comment Box.c

C/C++ Source or Header | 1990-12-01 | 4.2 KB | 198 lines | [TEXT/ALFA]

/******************************************************************
*                                                                 *
* When debugging, set the project type to application,            *
* and add the ANSI project.                                       *
*                                                                 *
* When all your bugs are out, 'undef' DEBUG, set the project      *
* type to Code Resource, with type = ACMD, name = <the name       *
* of the function>, file type to 'AEXT', and the purgeable        *
* flag set to true.                                               *
*                                                                 *
* Also, you need to remove the ANSI project from the ACMD         *
* project and replace it with the ANSI-A4 project if you use      *
* any functions in ANSI, such as strlen.                          *
*                                                                 *
* If you are not using THINK C, I'm not quite sure what you       *
* should do. :-)                                                  *
*                                                                 *
* Change History:                                                 *
* ==================================================              *
* 8/6/90    Fixed bug w/ last lines.                              *
*                                                                 *
******************************************************************/


#undef    DEBUG


#include <stdio.h>
#include <string.h>

#define    STAR    '*'
#define    CR        '\r'
#ifdef    DEBUG
#define    TABSIZE    8            /* default printf size */
#else    DEBUG
#define    TABSIZE    4            /* default ALPHA size */
#endif    DEBUG

char    *left(char *);
char    *right(char *);
char    *repeatChar(char *, char, long);


char *
#ifdef    DEBUG
dummy(inStr)
#else    DEBUG
main(inStr)
#endif    DEBUG
char    *inStr;
{
    long    lines, longest, len, i, j;
    char    *ptr, *mptr, c, *lineBeg;
    char    *mem;

    lines = 1;
    longest = 0;

    for (ptr = inStr,len = 0; *ptr; ptr++)
    {
        switch (*ptr)
        {
            case CR:
            case '\0':
                lines++;
                if (len > longest) longest = len;
                len = 0;
                break;
            case '\t':
                len = (((len + 2) / TABSIZE) + 1) * TABSIZE - 2;
                break;
            default:
                len++;
                break;
        }
    }
    if (len > longest) longest = len;
    if (*(ptr - 1) == '\r')
    {
        *(ptr - 1) = 0;
        lines--;
    }

    if (!(mem = NewPtr((lines + 4) * (longest + 5) + 2)))
    {
        SysBeep(2);
        return(inStr);
    }

    ptr = mem;
    *ptr++ = '/';
    ptr = repeatChar(ptr,STAR,longest + 3);
    *ptr++ = CR;
    ptr = left(ptr);
    ptr = repeatChar(ptr, ' ', longest);
    ptr = right(ptr);
    for (i = 0, mptr = inStr; i < lines; i++, mptr++)
    {
        ptr = left(ptr);
        lineBeg = mptr;
        for (len = 0; ((c = *mptr) != CR) && c; *ptr++ = *mptr++)
        {
            switch (c = *mptr)
            {
                case CR:
                case '\0':
                    len = 0;
                    break;
                case '\t':
                    len = (((len + 2) / TABSIZE) + 1) * TABSIZE - 2;
                    break;
                default:
                    len++;
            }
        }
        ptr = repeatChar(ptr, ' ', longest - len);
        ptr = right(ptr);
    }
    ptr = left(ptr);
    ptr = repeatChar(ptr, ' ', longest);
    ptr = right(ptr);
    ptr = repeatChar(ptr, STAR, longest + 3);
    *ptr++ = '/';
    *ptr++ = '\r';
    *ptr = '\0';

    /* Must free w/ 'DisposPtr' and allocate w/ 'NewPtr' */
    DisposPtr(inStr);
    return(mem);
}

char * left(ptr)
char    *ptr;
{
    *ptr++ = STAR;
    *ptr++ = ' ';
    return(ptr);
}


char * right(ptr)
char    *ptr;
{
    *ptr++ = ' ';
    *ptr++ = STAR;
    *ptr++ = CR;
    return(ptr);
}


char * repeatChar(ptr, c, num)
char    *ptr, c;
long    num;
{
    long    i;

    for (i = 0; i < num; i++)
        *ptr++ = c;
    return(ptr);
}

#ifdef    DEBUG

char * ConvertRtoN(char *theStr);

char * ConvertRtoN(theStr)
    char *theStr;
{
    char *currentChar;

    for (currentChar = theStr;*currentChar != 0; currentChar++)
        if (*currentChar == '\r')
            *currentChar = '\n';
}

main()
{
    char    *str3 = "this is nice";
    char    *str4 = "nice\r> 1234    fstatus;\reasy\r";
    char    *str2 = "Nice\r\tand\reasy\r";
    char    *str = "(define fixLexYyC\r    set matchWords 0\r    set forward 1\r";

    char    *ret, *in;

    in = NewPtr(strlen(str) + 1);
    strcpy(in, str);

    ret = dummy(in);

    ConvertRtoN(ret);                /* Convert '\r' to '\n' so we can see them in a printf */
    ConvertRtoN(str);

    printf("The original is:\n\n%s", str);
    printf("\n----\n\nThe result is:\n\n%s", ret);

}
#endif    DEBUG