lib/csv.c


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#include "csv.h"

int csv_find_index(char *header, const char **names, size_t names_len) {
    char *split = header;
    for (int idx = 0; split != NULL; ++idx) {
        char *front = (idx == 0) ? split : split + 1;
        for (size_t i = 0; i < names_len; ++i) {
            if (strncmp(front, names[i], strlen(names[i])) == 0) {
                return idx;
            }
        }
        split = strchr(front, ',');
    }

    return -1;
}

char *csv_get_index(char *row, size_t idx) {
    char *split = row;
    for (size_t i = 0; i < idx; ++i) {
        split = strchr(split + 1, ',');
        if (split == NULL) {
            return NULL;
        }
    }

    char *entry;
    char *start = (idx == 0) ? split : split + 1;
    char *end   = strchr(start, ',');
    if (end != NULL) {
        entry = strndup(start, end - start);
    } else {
        entry = strdup(start);
    }

    return entry;
}