mbprint.h File Reference

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Data Structures
struct	lineptr

Functions
unsigned char *	mbvalidate (unsigned char *pwcs, int encoding)
int	pg_wcswidth (const char *pwcs, size_t len, int encoding)
void	pg_wcsformat (const unsigned char *pwcs, size_t len, int encoding, struct lineptr *lines, int count)
void	pg_wcssize (const unsigned char *pwcs, size_t len, int encoding, int *result_width, int *result_height, int *result_format_size)

Function Documentation

mbvalidate()

unsigned char * mbvalidate	(	unsigned char *	pwcs,
		int	encoding
	)

Definition at line 392 of file mbprint.c.

{
    if (encoding == PG_UTF8)
        mb_utf_validate(pwcs);
    else
    {
        /*
         * other encodings needing validation should add their own routines
         * here
         */
    }
 
    return pwcs;
}

References encoding, mb_utf_validate(), and PG_UTF8.

Referenced by printTableAddCell(), and printTableAddHeader().

pg_wcsformat()

void pg_wcsformat	(	const unsigned char *	pwcs,
		size_t	len,
		int	encoding,
		struct lineptr *	lines,
		int	count
	)

Definition at line 294 of file mbprint.c.

{
    int         w,
                chlen = 0;
    int         linewidth = 0;
    unsigned char *ptr = lines->ptr;    /* Pointer to data area */
 
    for (; *pwcs && len > 0; pwcs += chlen)
    {
        chlen = PQmblen((const char *) pwcs, encoding);
        if (len < (size_t) chlen)
            break;
        w = PQdsplen((const char *) pwcs, encoding);
 
        if (chlen == 1)         /* single-byte char */
        {
            if (*pwcs == '\n')  /* Newline */
            {
                *ptr++ = '\0';
                lines->width = linewidth;
                linewidth = 0;
                lines++;
                count--;
                if (count <= 0)
                    exit(1);    /* Screwup */
 
                /* make next line point to remaining memory */
                lines->ptr = ptr;
            }
            else if (*pwcs == '\r') /* Linefeed */
            {
                strcpy((char *) ptr, "\\r");
                linewidth += 2;
                ptr += 2;
            }
            else if (*pwcs == '\t') /* Tab */
            {
                do
                {
                    *ptr++ = ' ';
                    linewidth++;
                } while (linewidth % 8 != 0);
            }
            else if (w < 0)     /* Other control char */
            {
                sprintf((char *) ptr, "\\x%02X", *pwcs);
                linewidth += 4;
                ptr += 4;
            }
            else                /* Output it as-is */
            {
                linewidth += w;
                *ptr++ = *pwcs;
            }
        }
        else if (w < 0)         /* Non-ascii control char */
        {
            if (encoding == PG_UTF8)
                sprintf((char *) ptr, "\\u%04X", utf8_to_unicode(pwcs));
            else
            {
                /*
                 * This case cannot happen in the current code because only
                 * UTF-8 signals multibyte control characters. But we may need
                 * to support it at some stage
                 */
                sprintf((char *) ptr, "\\u????");
            }
            ptr += 6;
            linewidth += 6;
        }
        else                    /* All other chars */
        {
            int         i;
 
            for (i = 0; i < chlen; i++)
                *ptr++ = pwcs[i];
            linewidth += w;
        }
        len -= chlen;
    }
    lines->width = linewidth;
    *ptr++ = '\0';              /* Terminate formatted string */
 
    if (count <= 0)
        exit(1);                /* Screwup */
 
    (lines + 1)->ptr = NULL;    /* terminate line array */
}

References encoding, i, len, PG_UTF8, PQdsplen(), PQmblen(), lineptr::ptr, sprintf, utf8_to_unicode(), and lineptr::width.

Referenced by print_aligned_text(), and print_aligned_vertical().

pg_wcssize()

void pg_wcssize	(	const unsigned char *	pwcs,
		size_t	len,
		int	encoding,
		int *	result_width,
		int *	result_height,
		int *	result_format_size
	)

Definition at line 211 of file mbprint.c.

{
    int         w,
                chlen = 0,
                linewidth = 0;
    int         width = 0;
    int         height = 1;
    int         format_size = 0;
 
    for (; *pwcs && len > 0; pwcs += chlen)
    {
        chlen = PQmblen((const char *) pwcs, encoding);
        if (len < (size_t) chlen)
            break;
        w = PQdsplen((const char *) pwcs, encoding);
 
        if (chlen == 1)         /* single-byte char */
        {
            if (*pwcs == '\n')  /* Newline */
            {
                if (linewidth > width)
                    width = linewidth;
                linewidth = 0;
                height += 1;
                format_size += 1;   /* For NUL char */
            }
            else if (*pwcs == '\r') /* Linefeed */
            {
                linewidth += 2;
                format_size += 2;
            }
            else if (*pwcs == '\t') /* Tab */
            {
                do
                {
                    linewidth++;
                    format_size++;
                } while (linewidth % 8 != 0);
            }
            else if (w < 0)     /* Other control char */
            {
                linewidth += 4;
                format_size += 4;
            }
            else                /* Output it as-is */
            {
                linewidth += w;
                format_size += 1;
            }
        }
        else if (w < 0)         /* Non-ascii control char */
        {
            linewidth += 6;     /* \u0000 */
            format_size += 6;
        }
        else                    /* All other chars */
        {
            linewidth += w;
            format_size += chlen;
        }
        len -= chlen;
    }
    if (linewidth > width)
        width = linewidth;
    format_size += 1;           /* For NUL char */
 
    /* Set results */
    if (result_width)
        *result_width = width;
    if (result_height)
        *result_height = height;
    if (result_format_size)
        *result_format_size = format_size;
}

References encoding, len, PQdsplen(), and PQmblen().

Referenced by print_aligned_text(), and print_aligned_vertical().

pg_wcswidth()

int pg_wcswidth	(	const char *	pwcs,
		size_t	len,
		int	encoding
	)

Definition at line 177 of file mbprint.c.

{
    int         width = 0;
 
    while (len > 0)
    {
        int         chlen,
                    chwidth;
 
        chlen = PQmblen(pwcs, encoding);
        if (len < (size_t) chlen)
            break;              /* Invalid string */
 
        chwidth = PQdsplen(pwcs, encoding);
        if (chwidth > 0)
            width += chwidth;
 
        pwcs += chlen;
        len -= chlen;
    }
    return width;
}

References encoding, len, PQdsplen(), and PQmblen().

Referenced by describeOneTableDetails().