zip_name_locate —
get index of file by name
#include <zip.h>
zip_int64_t
  
  zip_name_locate(zip_t
    *archive, const char
    *fname, zip_flags_t
    flags);
The zip_name_locate() function returns the index of the
  file named fname in archive. If
  archive does not contain a file with that name, -1 is
  returned. The flags are specified by
  or'ing the following values, or 0
  for none of them.
  - ZIP_FL_NOCASE
- Ignore case distinctions. (Will only work well if the file names are
      ASCII.) With this flag, zip_name_locate() will be
      slow for archives with many files.
- ZIP_FL_NODIR
- Ignore directory part of file name in archive. With this flag,
      zip_name_locate() will be slow for archives with
      many files.
- ZIP_FL_ENC_RAW
- Compare against the unmodified names as it is in the ZIP archive.
- ZIP_FL_ENC_GUESS
- (Default.) Guess the encoding of the name in the ZIP archive and convert
      it to UTF-8, if necessary, before comparing.
- ZIP_FL_ENC_STRICT
- Follow the ZIP specification and expect CP-437 encoded names in the ZIP
      archive (except if they are explicitly marked as UTF-8). Convert it to
      UTF-8 before comparing.
 
Note: ASCII is a subset of both CP-437 and UTF-8.
zip_name_locate() returns the index of the file named
  fname or -1, if archive does not
  contain an entry of that name.
zip_name_locate() fails if:
  - [ZIP_ER_INVAL]
- One of the arguments is invalid.
- [ZIP_ER_MEMORY]
- Required memory could not be allocated.
- [ZIP_ER_NOENT]
- No entry of the name fname is found in the
    archive.
zip_name_locate() was added in libzip 0.6. In libzip
  0.11 the return type was changed from int to
  zip_int64_t. In libzip 0.11 the type of
  flags was changed from int to
  zip_flags_t.