commas.c

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#include <string.h>
#include <grass/gis.h>


int G_insert_commas(char *buf)
{
    char number[100];
    int i, len;
    int comma;

    while (*buf == ' ')
        buf++;
    strcpy(number, buf);
    for (len = 0; number[len]; len++)
        if (number[len] == '.')
            break;
    if (len < 5)
        return 1;

    i = 0;
    if ((comma = len % 3)) {
        while (i < comma)
            *buf++ = number[i++];
        *buf++ = ',';
    }

    for (comma = 0; number[i]; comma++) {
        if (number[i] == '.')
            break;
        if (comma && (comma % 3 == 0))
            *buf++ = ',';
        *buf++ = number[i++];
    }
    while (number[i])
        *buf++ = number[i++];
    *buf = 0;

    return 0;
}


int G_remove_commas(char *buf)
{
    char *b;

    for (b = buf; *b; b++)
        if (*b != ',')
            *buf++ = *b;

    *buf = 0;

    return 0;
}