1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.01 of the PHP license, |
6 | that is bundled with this package in the file LICENSE, and is |
7 | available through the world-wide-web at the following url: |
8 | http://www.php.net/license/3_01.txt |
9 | If you did not receive a copy of the PHP license and are unable to |
10 | obtain it through the world-wide-web, please send a note to |
11 | license@php.net so we can mail you a copy immediately. |
12 +----------------------------------------------------------------------+
13 | Authors: Gustavo Lopes <cataphract@php.net> |
14 +----------------------------------------------------------------------+
15 */
16
17 /* $Id$ */
18
19 #include "intl_cppshims.h"
20
21 #include "intl_convertcpp.h"
22 #include <unicode/ustring.h>
23 extern "C" {
24 #include <php.h>
25 }
26
27 /* {{{ intl_stringFromChar */
intl_stringFromChar(UnicodeString & ret,char * str,size_t str_len,UErrorCode * status)28 int intl_stringFromChar(UnicodeString &ret, char *str, size_t str_len, UErrorCode *status)
29 {
30 if(str_len > INT32_MAX) {
31 *status = U_BUFFER_OVERFLOW_ERROR;
32 ret.setToBogus();
33 return FAILURE;
34 }
35 //the number of UTF-16 code units is not larger than that of UTF-8 code
36 //units, + 1 for the terminator
37 int32_t capacity = (int32_t)str_len + 1;
38
39 //no check necessary -- if NULL will fail ahead
40 UChar *utf16 = ret.getBuffer(capacity);
41 int32_t utf16_len = 0;
42 *status = U_ZERO_ERROR;
43 u_strFromUTF8WithSub(utf16, ret.getCapacity(), &utf16_len,
44 str, str_len, U_SENTINEL /* no substitution */, NULL,
45 status);
46 ret.releaseBuffer(utf16_len);
47 if (U_FAILURE(*status)) {
48 ret.setToBogus();
49 return FAILURE;
50 }
51 return SUCCESS;
52 }
53 /* }}} */
54
55 /* {{{ intl_charFromString
56 * faster than doing intl_convert_utf16_to_utf8(
57 * from.getBuffer(), from.length(), &status),
58 * but consumes more memory */
intl_charFromString(const UnicodeString & from,UErrorCode * status)59 zend_string* intl_charFromString(const UnicodeString &from, UErrorCode *status)
60 {
61 zend_string *u8res;
62
63 if (from.isBogus()) {
64 return NULL;
65 }
66
67 //the number of UTF-8 code units is not larger than that of UTF-16 code
68 //units * 3
69 int32_t capacity = from.length() * 3;
70
71 if (from.isEmpty()) {
72 return ZSTR_EMPTY_ALLOC();
73 }
74
75 u8res = zend_string_alloc(capacity, 0);
76
77 const UChar *utf16buf = from.getBuffer();
78 int32_t actual_len;
79 u_strToUTF8WithSub(ZSTR_VAL(u8res), capacity, &actual_len, utf16buf, from.length(),
80 U_SENTINEL, NULL, status);
81
82 if (U_FAILURE(*status)) {
83 zend_string_free(u8res);
84 return NULL;
85 }
86 ZSTR_VAL(u8res)[actual_len] = '\0';
87 ZSTR_LEN(u8res) = actual_len;
88
89 return u8res;
90 }
91 /* }}} */
92
