zip_string.c File Reference

#include <stdlib.h>
#include <string.h>
#include <zlib.h>
#include "zipint.h"

Go to the source code of this file.

Functions
zip_uint32_t	_zip_string_crc32 (const zip_string_t *s)
int	_zip_string_equal (const zip_string_t *a, const zip_string_t *b)
void	_zip_string_free (zip_string_t *s)
const zip_uint8_t *	_zip_string_get (zip_string_t *string, zip_uint32_t *lenp, zip_flags_t flags, zip_error_t *error)
zip_uint16_t	_zip_string_length (const zip_string_t *s)
zip_string_t *	_zip_string_new (const zip_uint8_t *raw, zip_uint16_t length, zip_flags_t flags, zip_error_t *error)
int	_zip_string_write (zip_t *za, const zip_string_t *s)

Function Documentation

_zip_string_crc32()

zip_uint32_t _zip_string_crc32

(

const zip_string_t *

s

)

Definition at line 42 of file zip_string.c.

                                         {
    zip_uint32_t crc;
 
    crc = (zip_uint32_t)crc32(0L, Z_NULL, 0);
 
    if (s != NULL)
        crc = (zip_uint32_t)crc32(crc, s->raw, s->length);
 
    return crc;
}

References crc32(), L, NULL, s, and Z_NULL.

Referenced by _zip_dirent_process_ef_utf_8(), and _zip_ef_utf8().

_zip_string_equal()

int _zip_string_equal	(	const zip_string_t *	a,
		const zip_string_t *	b
	)

Definition at line 55 of file zip_string.c.

                                                                {
    if (a == NULL || b == NULL)
        return a == b;
 
    if (a->length != b->length)
        return 0;
 
    /* TODO: encoding */
 
    return (memcmp(a->raw, b->raw, a->length) == 0);
}

References a, b, and NULL.

Referenced by _zip_headercomp(), _zip_set_name(), zip_file_set_comment(), and zip_set_archive_comment().

_zip_string_free()

void _zip_string_free

(

zip_string_t *

s

)

Definition at line 69 of file zip_string.c.

                                  {
    if (s == NULL)
        return;
 
    free(s->raw);
    free(s->converted);
    free(s);
}

References free(), NULL, and s.

Referenced by _zip_cdir_free(), _zip_dirent_finalize(), _zip_dirent_process_ef_utf_8(), _zip_name_locate(), _zip_set_name(), _zip_string_new(), zip_discard(), zip_file_set_comment(), zip_set_archive_comment(), and zip_unchange_archive().

_zip_string_get()

const zip_uint8_t* _zip_string_get	(	zip_string_t *	string,
		zip_uint32_t *	lenp,
		zip_flags_t	flags,
		zip_error_t *	error
	)

Definition at line 80 of file zip_string.c.

                                                                                                 {
    static const zip_uint8_t empty[1] = "";
 
    if (string == NULL) {
        if (lenp)
            *lenp = 0;
        return empty;
    }
 
    if ((flags & ZIP_FL_ENC_RAW) == 0) {
        /* start guessing */
        if (string->encoding == ZIP_ENCODING_UNKNOWN)
            _zip_guess_encoding(string, ZIP_ENCODING_UNKNOWN);
 
        if (((flags & ZIP_FL_ENC_STRICT) && string->encoding != ZIP_ENCODING_ASCII && string->encoding != ZIP_ENCODING_UTF8_KNOWN) || (string->encoding == ZIP_ENCODING_CP437)) {
            if (string->converted == NULL) {
                if ((string->converted = _zip_cp437_to_utf8(string->raw, string->length, &string->converted_length, error)) == NULL)
                    return NULL;
            }
            if (lenp)
                *lenp = string->converted_length;
            return string->converted;
        }
    }
 
    if (lenp)
        *lenp = string->length;
    return string->raw;
}

References _zip_cp437_to_utf8(), _zip_guess_encoding(), zip_string::converted, zip_string::converted_length, zip_string::encoding, error(), flags, zip_string::length, NULL, zip_string::raw, ZIP_ENCODING_ASCII, ZIP_ENCODING_CP437, ZIP_ENCODING_UNKNOWN, ZIP_ENCODING_UTF8_KNOWN, ZIP_FL_ENC_RAW, and ZIP_FL_ENC_STRICT.

Referenced by _zip_ef_utf8(), _zip_get_name(), _zip_name_locate(), _zip_open(), _zip_set_name(), zip_file_get_comment(), and zip_get_archive_comment().

_zip_string_length()

zip_uint16_t _zip_string_length

(

const zip_string_t *

s

)

Definition at line 112 of file zip_string.c.

                                          {
    if (s == NULL)
        return 0;
 
    return s->length;
}

References NULL, and s.

Referenced by _zip_checkcons(), _zip_dirent_apply_attributes(), and _zip_dirent_write().

_zip_string_new()

zip_string_t* _zip_string_new	(	const zip_uint8_t *	raw,
		zip_uint16_t	length,
		zip_flags_t	flags,
		zip_error_t *	error
	)

Definition at line 121 of file zip_string.c.

                                                                                                    {
    zip_string_t *s;
    zip_encoding_type_t expected_encoding;
 
    if (length == 0)
        return NULL;
 
    switch (flags & ZIP_FL_ENCODING_ALL) {
    case ZIP_FL_ENC_GUESS:
        expected_encoding = ZIP_ENCODING_UNKNOWN;
        break;
    case ZIP_FL_ENC_UTF_8:
        expected_encoding = ZIP_ENCODING_UTF8_KNOWN;
        break;
    case ZIP_FL_ENC_CP437:
        expected_encoding = ZIP_ENCODING_CP437;
        break;
    default:
        zip_error_set(error, ZIP_ER_INVAL, 0);
        return NULL;
    }
 
    if ((s = (zip_string_t *)malloc(sizeof(*s))) == NULL) {
        zip_error_set(error, ZIP_ER_MEMORY, 0);
        return NULL;
    }
 
    if ((s->raw = (zip_uint8_t *)malloc((size_t)length + 1)) == NULL) {
        free(s);
        return NULL;
    }
 
    memcpy(s->raw, raw, length);
    s->raw[length] = '\0';
    s->length = length;
    s->encoding = ZIP_ENCODING_UNKNOWN;
    s->converted = NULL;
    s->converted_length = 0;
 
    if (expected_encoding != ZIP_ENCODING_UNKNOWN) {
        if (_zip_guess_encoding(s, expected_encoding) == ZIP_ENCODING_ERROR) {
            _zip_string_free(s);
            zip_error_set(error, ZIP_ER_INVAL, 0);
            return NULL;
        }
    }
 
    return s;
}

References _zip_guess_encoding(), _zip_string_free(), error(), flags, free(), length, malloc(), memcpy(), NULL, s, ZIP_ENCODING_CP437, ZIP_ENCODING_ERROR, ZIP_ENCODING_UNKNOWN, ZIP_ENCODING_UTF8_KNOWN, ZIP_ER_INVAL, ZIP_ER_MEMORY, zip_error_set(), ZIP_FL_ENC_CP437, ZIP_FL_ENC_GUESS, ZIP_FL_ENC_UTF_8, and ZIP_FL_ENCODING_ALL.

Referenced by _zip_dirent_process_ef_utf_8(), _zip_name_locate(), _zip_read_cdir(), _zip_read_string(), _zip_set_name(), zip_file_set_comment(), and zip_set_archive_comment().

_zip_string_write()

int _zip_string_write	(	zip_t *	za,
		const zip_string_t *	s
	)

Definition at line 173 of file zip_string.c.

                                                    {
    if (s == NULL)
        return 0;
 
    return _zip_write(za, s->raw, s->length);
}

References _zip_write(), NULL, s, and za.

Referenced by _zip_dirent_write().