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Reorganise unarchiving functions, more code re-use, only does single pass(no more linked lists), basis for supporting a cpio (and cheaper untar) applet, but cpio applet isnt included in this.

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It effects ar, dpkg-deb applets only
This commit is contained in:
Glenn L McGrath
2001-06-20 07:48:00 +00:00
parent b4a26e6fc0
commit eb1c94078f
16 changed files with 585 additions and 704 deletions
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32
include/libbb.h
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@ -213,23 +213,9 @@ char *xreadlink(const char *path);
char *concat_path_file(const char *path, const char *filename);
char *last_char_is(const char *s, int c);
typedef struct file_headers_s {
char *name;
char *link_name;
off_t size;
uid_t uid;
gid_t gid;
mode_t mode;
time_t mtime;
off_t offset;
dev_t device;
struct file_headers_s *next;
} file_headers_t;
file_headers_t *get_ar_headers(FILE *in_file);
file_headers_t *get_tar_headers(FILE *tar_stream);
file_headers_t *get_tar_gz_headers(FILE *compressed_stream);
file_headers_t *append_archive_list(file_headers_t *head, file_headers_t *tail_entry);
file_headers_t *add_from_archive_list(file_headers_t *master_list, file_headers_t *new_list, const char *name);
void *get_header_ar(FILE *in_file);
void *get_header_cpio(FILE *src_stream);
void *get_header_tar(FILE *tar_stream);
enum extract_functions_e {
extract_verbose_list = 1,
@ -240,18 +226,20 @@ enum extract_functions_e {
extract_preserve_date = 32,
extract_data_tar_gz = 64,
extract_control_tar_gz = 128,
extract_unzip_only = 256
extract_unzip_only = 256,
extract_unconditional = 512,
extract_create_dirs = 1024
};
char *extract_archive(FILE *src_stream, FILE *out_stream, file_headers_t *extract_headers, int function, const char *prefix);
char *deb_extract(const char *package_filename, FILE *out_stream, const int function,
char *unarchive(FILE *src_stream, void *(*get_header)(FILE *),
const int extract_function, const char *prefix, char **extract_names);
char *deb_extract(const char *package_filename, FILE *out_stream, const int extract_function,
const char *prefix, const char *filename);
char *read_package_field(const char *package_buffer);
int seek_sub_file(FILE *in_file, file_headers_t *headers, const char *tar_gz_file);
char *fgets_str(FILE *file, const char *terminating_string);
extern int unzip(FILE *l_in_file, FILE *l_out_file);
extern void gz_close(int gunzip_pid);
extern int gz_open(FILE *compressed_file, int *pid);
extern FILE *gz_open(FILE *compressed_file, int *pid);
extern struct hostent *xgethostbyname(const char *name);