zip_fopen - Man Page
open file in zip archive for reading
Library
libzip (-lzip)
Synopsis
#include <zip.h>
zip_file_t *
zip_fopen(zip_t *archive, const char *fname, zip_flags_t flags);
zip_file_t *
zip_fopen_index(zip_t *archive, zip_uint64_t index, zip_flags_t flags);
Description
The zip_fopen() function opens the file name fname in archive. The flags argument specifies how the name lookup should be done, according to the values are described in zip_name_locate(3). Also, the following values may be or'ed to it.
- ZIP_FL_COMPRESSED
Read the compressed data. Otherwise the data is uncompressed by
zip_fread().- ZIP_FL_UNCHANGED
Read the original data from the zip archive, ignoring any changes made to the file; this is not supported by all data sources.
The zip_fopen_index() function opens the file at position index.
If encrypted data is encountered, the functions call zip_fopen_encrypted(3) or zip_fopen_index_encrypted(3) respectively, using the default password set with zip_set_default_password(3).
Return Values
Upon successful completion, a struct zip_file pointer is returned. Otherwise, NULL is returned and the error code in archive is set to indicate the error.
Errors
- [ZIP_ER_CHANGED]
The file data has been changed and the data source does not support rereading data.
- [ZIP_ER_COMPNOTSUPP]
The compression method used is not supported.
- [ZIP_ER_ENCRNOTSUPP]
The encryption method used is not supported.
- [ZIP_ER_MEMORY]
Required memory could not be allocated.
- [ZIP_ER_NOPASSWD]
The file is encrypted, but no password has been provided.
- [ZIP_ER_READ]
A file read error occurred.
- [ZIP_ER_SEEK]
A file seek error occurred.
- [ZIP_ER_WRONGPASSWD]
The provided password does not match the password used for encryption. Note that some incorrect passwords are not detected by the check done by
zip_fopen().- [ZIP_ER_ZLIB]
Initializing the zlib stream failed.
The function zip_fopen() may also fail and set zip_err for any of the errors specified for the routine zip_name_locate(3).
The function zip_fopen_index() may also fail with ZIP_ER_INVAL if index is invalid.
See Also
libzip(3), zip_fclose(3), zip_fread(3), zip_fseek(3), zip_get_num_entries(3), zip_name_locate(3), zip_set_default_password(3)
History
zip_fopen() and zip_fopen_index() were added in libzip 1.0.
Authors
Dieter Baron <dillo@nih.at> and Thomas Klausner <tk@giga.or.at>
Referenced By
libzip(3), zip_fclose(3), zip_fopen_encrypted(3), zip_fread(3), zip_fseek(3), zip_ftell(3), zip_get_num_entries(3), zip_get_num_files(3), zip_set_default_password(3).
The man page zip_fopen_index(3) is an alias of zip_fopen(3).