output power details to csv

pbf2csv.c

// 2csv in c
// (C) 2021 Joe Gorse
// BSD 3 Clause

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

// #include <printf.h>
// #include <stdint.h>

// static int
// printf_arginfo_b(const struct printf_info *info,
//                  size_t      n,
//                  int        *argtypes)
// {
//     /* "%b" always takes one argument, a pointer to uint8_t[6]. */
//     if (n > 0) {
//         argtypes[0] = PA_POINTER;
//     }

//     return 1;
// } /* printf_arginfo_M */

// static int
// printf_output_b(FILE *stream,
//                 const struct printf_info *info,
//                 const void *const *args)
// {
//     uint8_t val = *(int*)(args[0]);
//     for (int i=7; i>=0; i--)
//         fprintf(stream, "%d", (val>>i)&1);
    
//     return 8;
// } /* printf_output_M */

int parseline(int lcount) {
    char c;
    char buf[32];
    int ccount = 0;  // char count on a word buffer
    int wcount = 0;  // word count on a row
    unsigned short status;

    while ((c = fgetc(stdin)) > 0) {
        if (c == ',') {
            buf[ccount++] = '\0';
            printf("%s,", buf); ++wcount;
            if (wcount == 4 && lcount == 0) {  // expand the bits of field 4, 1st row
                sscanf(buf, "%4hx", &status);
                for (int i=15; i>=0; i--){
                    putchar(0x30 + ((status>>i)&1));
                    putchar(',');
                    // printf("%01d,", (status>>i)&1);
                }
                // putchar('\n');  // debug
            }
            ccount = 0;
        }
        else if (c == '\n') {
            buf[ccount++] = '\0';
            printf("%s", buf); ++wcount; ++lcount;
            // printf("\nnl wcount %d ccount %d lcount %d\n", wcount, ccount, lcount);  // debug
            break;
        }
        else {  // up to 32 bytes, add the character
            assert(ccount < 32);
            buf[ccount++] = c;
        }
    }
    
    return wcount;
}

void parse_block() {
    assert(parseline(0) == 6);
    putchar(',');
    assert(parseline(1) == 10);
    putchar(',');
    assert(parseline(1) == 10);
    putchar(',');
    assert(parseline(1) == 10);
    putchar(',');
    assert(parseline(1) == 10);
    putchar(',');
    assert(parseline(1) == 10);
    putchar(',');
    assert(parseline(1) == 10);
    putchar('\n');
}

int main(int argc, char *argv[]) {
    char *line = NULL;
    size_t len = 0;
    ssize_t read;

    int lcount = 0;

    printf("hello world! argc %d\n", argc);
    for (int i=0;i<argc;i++)
        printf("%d %s\n", i, argv[i]);
    assert(argc==1);  // no parameters for now
    // TODO: ARGV perl-like file input

    while (1) {
        printf("%05d,", ++lcount);
        parse_block();
    }

    return 0;
}