file_io.c

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#include <jwsc/config.h>

#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <assert.h>
#include <inttypes.h>

#include "jwsc/base/file_io.h"


int skip_fp_spaces_and_comments(FILE* fp)
{
    char c;
    int done;

    done = 0;

    while (!done && (c = fgetc(fp)) != EOF)
    {
        if (c == '#')
        {
            while ((c = fgetc(fp)) != EOF && c != '\n') 
                ;
            if (c == EOF) 
                done = 1;
        }
        else if (!isspace(c))
        {
            ungetc(c, fp);
            done = 1;
        }
    }

    return (c != EOF);
}


int skip_line(FILE* fp)
{
    char c;

    while ((c = fgetc(fp)) != EOF && c != '\n') ;

    return (c != EOF);
}


int count_fp_line_columns(FILE* fp)
{
    int  count;
    int  done;
    int  in_column;
    char c;

    count     = 0;
    done      = 0;
    in_column = 0;

    while(!done)
    {
        if ((c = fgetc(fp)) == EOF || c == '\n')
        {
            done = 1;
        }
        else if (isspace(c))
        {
            in_column = 0;
        }
        else if (!in_column)
        {
            count++;
            in_column = 1;
        }
    }

    return count;
}