1 /*
2 +----------------------------------------------------------------------+
3 | This source file is subject to version 3.01 of the PHP license, |
4 | that is bundled with this package in the file LICENSE, and is |
5 | available through the world-wide-web at the following url: |
6 | https://www.php.net/license/3_01.txt |
7 | If you did not receive a copy of the PHP license and are unable to |
8 | obtain it through the world-wide-web, please send a note to |
9 | license@php.net so we can mail you a copy immediately. |
10 +----------------------------------------------------------------------+
11 | Authors: Gustavo Lopes <cataphract@php.net> |
12 +----------------------------------------------------------------------+
13 */
14
15 #include "intl_cppshims.h"
16
17 #include "intl_convertcpp.h"
18 #include <unicode/ustring.h>
19 extern "C" {
20 #include <php.h>
21 }
22
23 /* {{{ intl_stringFromChar */
intl_stringFromChar(UnicodeString & ret,char * str,size_t str_len,UErrorCode * status)24 int intl_stringFromChar(UnicodeString &ret, char *str, size_t str_len, UErrorCode *status)
25 {
26 if(UNEXPECTED(str_len > INT32_MAX)) {
27 *status = U_BUFFER_OVERFLOW_ERROR;
28 ret.setToBogus();
29 return FAILURE;
30 }
31 //the number of UTF-16 code units is not larger than that of UTF-8 code
32 //units, + 1 for the terminator
33 int32_t capacity = (int32_t)str_len + 1;
34
35 //no check necessary -- if NULL will fail ahead
36 UChar *utf16 = ret.getBuffer(capacity);
37 int32_t utf16_len = 0;
38 *status = U_ZERO_ERROR;
39 u_strFromUTF8WithSub(utf16, ret.getCapacity(), &utf16_len,
40 str, str_len, U_SENTINEL /* no substitution */, NULL,
41 status);
42 ret.releaseBuffer(utf16_len);
43 if (U_FAILURE(*status)) {
44 ret.setToBogus();
45 return FAILURE;
46 }
47 return SUCCESS;
48 }
49 /* }}} */
50
51 /* {{{ intl_charFromString
52 * faster than doing intl_convert_utf16_to_utf8(
53 * from.getBuffer(), from.length(), &status),
54 * but consumes more memory */
intl_charFromString(const UnicodeString & from,UErrorCode * status)55 zend_string* intl_charFromString(const UnicodeString &from, UErrorCode *status)
56 {
57 zend_string *u8res;
58
59 if (UNEXPECTED(from.isBogus())) {
60 return NULL;
61 }
62
63 //the number of UTF-8 code units is not larger than that of UTF-16 code
64 //units * 3
65 int32_t capacity = from.length() * 3;
66
67 if (from.isEmpty()) {
68 return ZSTR_EMPTY_ALLOC();
69 }
70
71 u8res = zend_string_alloc(capacity, 0);
72
73 const UChar *utf16buf = from.getBuffer();
74 int32_t actual_len;
75 u_strToUTF8WithSub(ZSTR_VAL(u8res), capacity, &actual_len, utf16buf, from.length(),
76 U_SENTINEL, NULL, status);
77
78 if (U_FAILURE(*status)) {
79 zend_string_free(u8res);
80 return NULL;
81 }
82 u8res = zend_string_truncate(u8res, actual_len, 0);
83
84 return u8res;
85 }
86 /* }}} */
87
