test_libarchive.c

#include <stdlib.h>
#include <fcntl.h>
#include <archive.h>
#include <archive_entry.h>

int myclose(struct archive *a, void *client_data);
ssize_t myread(struct archive *a, void *client_data, const void **buff);

struct mydata {
    int fd;
    const char* name;
    void* buff[10240];
};

void test_archive_read_open(const char *name) {
    int err;
    struct archive *a;
    struct archive_entry *e;

    struct mydata *mydata;
    mydata = malloc(sizeof(struct mydata));

    a = archive_read_new();

    mydata->name = name;
    mydata->fd = open(mydata->name, O_RDONLY);

    archive_read_support_filter_all(a);
    archive_read_support_format_all(a);

    err = archive_read_open(a, mydata, NULL, myread, myclose);
    if(err != ARCHIVE_OK) {
        printf("archive_read_open: %d\n", err);
    }

    while((err = archive_read_next_header(a, &e)) != ARCHIVE_EOF) {
        if(err == ARCHIVE_OK) {
            printf("%s\n", archive_entry_pathname(e));
        } else {
            printf("archive_read_next_header: %d\n", err);
            break;
        }
    }

    archive_read_close(a);
    archive_read_free(a);
}

ssize_t myread(struct archive *a, void *client_data, const void **buff) {
    struct mydata *mydata = client_data;
    *buff = mydata->buff;
    return (read(mydata->fd, mydata->buff, 10240));
}

int myclose(struct archive *a, void *client_data) {
    struct mydata *mydata = client_data;

    if(mydata->fd > 0) {
        close(mydata->fd);
    }

    free(mydata);
    return (ARCHIVE_OK);
}

void test_archive_read_open_filename(const char *name) {
    int err;
    struct archive *a;
    struct archive_entry *e;

    a = archive_read_new();

    archive_read_support_filter_all(a);
    archive_read_support_format_all(a);

    err = archive_read_open_filename(a, name, 10240);
    if(err != ARCHIVE_OK) {
        printf("archive_read_open: %d\n", err);
    }

    while((err = archive_read_next_header(a, &e)) != ARCHIVE_EOF) {
        if(err == ARCHIVE_OK) {
            printf("%s\n", archive_entry_pathname(e));
        } else {
            printf("archive_read_next_header: %d\n", err);
            break;
        }
    }

    archive_read_close(a);
    archive_read_free(a);
}

int main(int argc, char *argv[]) {
    int i;

    for(i = 1; i < argc; i++) {
        test_archive_read_open(argv[i]);
        printf("\n");
        test_archive_read_open_filename(argv[i]);
    }

    return 0;
}