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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| /* | ||
| * Copyright (c) 2016 Apple Inc. All rights reserved. | ||
| * | ||
| * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | ||
| * | ||
| * This file contains Original Code and/or Modifications of Original Code | ||
| * as defined in and that are subject to the Apple Public Source License | ||
| * Version 2.0 (the 'License'). You may not use this file except in | ||
| * compliance with the License. The rights granted to you under the License | ||
| * may not be used to create, or enable the creation or redistribution of, | ||
| * unlawful or unlicensed copies of an Apple operating system, or to | ||
| * circumvent, violate, or enable the circumvention or violation of, any | ||
| * terms of an Apple operating system software license agreement. | ||
| * | ||
| * Please obtain a copy of the License at | ||
| * http://www.opensource.apple.com/apsl/ and read it before using this file. | ||
| * | ||
| * The Original Code and all software distributed under the License are | ||
| * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | ||
| * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | ||
| * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | ||
| * Please see the License for the specific language governing rights and | ||
| * limitations under the License. | ||
| * | ||
| * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | ||
| */ | ||
|
|
||
| #include <libkern/libkern.h> | ||
|
|
||
| static int | ||
| hex2int(int c) | ||
| { | ||
| if (c >= '0' && c <= '9') { | ||
| return c - '0'; | ||
| } else if (c >= 'A' && c <= 'F') { | ||
| return c - 'A' + 10; | ||
| } else if (c >= 'a' && c <= 'f') { | ||
| return c - 'a' + 10; | ||
| } | ||
| return 0; | ||
| } | ||
|
|
||
| static bool | ||
| isprint(int ch) | ||
| { | ||
| return ch >= 0x20 && ch <= 0x7e; | ||
| } | ||
|
|
||
| /* | ||
| * In-place decode of URL percent-encoded str | ||
| */ | ||
| void | ||
| url_decode(char *str) | ||
| { | ||
| if (!str) { | ||
| return; | ||
| } | ||
|
|
||
| while (*str) { | ||
| if (*str == '%') { | ||
| char c = 0; | ||
| char *esc = str++; /* remember the start of the escape sequence */ | ||
|
|
||
| if (*str) { | ||
| c += hex2int(*str++); | ||
| } | ||
| if (*str) { | ||
| c = (c << 4) + hex2int(*str++); | ||
| } | ||
|
|
||
| if (isprint(c)) { | ||
| /* overwrite the '%' with the new char, and bump the rest of the | ||
| * string down a few characters */ | ||
| *esc++ = c; | ||
| str = memmove(esc, str, strlen(str)+1); | ||
| } else { | ||
| str++; | ||
| } | ||
|
|
||
| } else { | ||
| str++; | ||
| } | ||
| } | ||
| } |
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