diff options
Diffstat (limited to 'jcnf/yajl/yajl_encode.c')
| -rw-r--r-- | jcnf/yajl/yajl_encode.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/jcnf/yajl/yajl_encode.c b/jcnf/yajl/yajl_encode.c deleted file mode 100644 index 184277b..0000000 --- a/jcnf/yajl/yajl_encode.c +++ /dev/null @@ -1,179 +0,0 @@ -/* - * Copyright 2007-2009, Lloyd Hilaiel. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. Neither the name of Lloyd Hilaiel nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include "yajl_encode.h" - -#include <assert.h> -#include <stdlib.h> -#include <string.h> -#include <stdio.h> - -static void CharToHex(unsigned char c, char * hexBuf) -{ - const char * hexchar = "0123456789ABCDEF"; - hexBuf[0] = hexchar[c >> 4]; - hexBuf[1] = hexchar[c & 0x0F]; -} - -void -yajl_string_encode(yajl_buf buf, const unsigned char * str, - unsigned int len) -{ - unsigned int beg = 0; - unsigned int end = 0; - char hexBuf[7]; - hexBuf[0] = '\\'; hexBuf[1] = 'u'; hexBuf[2] = '0'; hexBuf[3] = '0'; - hexBuf[6] = 0; - - while (end < len) { - const char * escaped = NULL; - switch (str[end]) { - case '\r': escaped = "\\r"; break; - case '\n': escaped = "\\n"; break; - case '\\': escaped = "\\\\"; break; - /* case '/': escaped = "\\/"; break; */ - case '"': escaped = "\\\""; break; - case '\f': escaped = "\\f"; break; - case '\b': escaped = "\\b"; break; - case '\t': escaped = "\\t"; break; - default: - if ((unsigned char) str[end] < 32) { - CharToHex(str[end], hexBuf + 4); - escaped = hexBuf; - } - break; - } - if (escaped != NULL) { - yajl_buf_append(buf, str + beg, end - beg); - yajl_buf_append(buf, escaped, strlen(escaped)); - beg = ++end; - } else { - ++end; - } - } - yajl_buf_append(buf, str + beg, end - beg); -} - -static void hexToDigit(unsigned int * val, const unsigned char * hex) -{ - unsigned int i; - for (i=0;i<4;i++) { - unsigned char c = hex[i]; - if (c >= 'A') c = (c & ~0x20) - 7; - c -= '0'; - assert(!(c & 0xF0)); - *val = (*val << 4) | c; - } -} - -static void Utf32toUtf8(unsigned int codepoint, char * utf8Buf) -{ - if (codepoint < 0x80) { - utf8Buf[0] = (char) codepoint; - utf8Buf[1] = 0; - } else if (codepoint < 0x0800) { - utf8Buf[0] = (char) ((codepoint >> 6) | 0xC0); - utf8Buf[1] = (char) ((codepoint & 0x3F) | 0x80); - utf8Buf[2] = 0; - } else if (codepoint < 0x10000) { - utf8Buf[0] = (char) ((codepoint >> 12) | 0xE0); - utf8Buf[1] = (char) (((codepoint >> 6) & 0x3F) | 0x80); - utf8Buf[2] = (char) ((codepoint & 0x3F) | 0x80); - utf8Buf[3] = 0; - } else if (codepoint < 0x200000) { - utf8Buf[0] =(char)((codepoint >> 18) | 0xF0); - utf8Buf[1] =(char)(((codepoint >> 12) & 0x3F) | 0x80); - utf8Buf[2] =(char)(((codepoint >> 6) & 0x3F) | 0x80); - utf8Buf[3] =(char)((codepoint & 0x3F) | 0x80); - utf8Buf[4] = 0; - } else { - utf8Buf[0] = '?'; - utf8Buf[1] = 0; - } -} - -void yajl_string_decode(yajl_buf buf, const unsigned char * str, - unsigned int len) -{ - unsigned int beg = 0; - unsigned int end = 0; - - while (end < len) { - if (str[end] == '\\') { - char utf8Buf[5]; - const char * unescaped = "?"; - yajl_buf_append(buf, str + beg, end - beg); - switch (str[++end]) { - case 'r': unescaped = "\r"; break; - case 'n': unescaped = "\n"; break; - case '\\': unescaped = "\\"; break; - case '/': unescaped = "/"; break; - case '"': unescaped = "\""; break; - case 'f': unescaped = "\f"; break; - case 'b': unescaped = "\b"; break; - case 't': unescaped = "\t"; break; - case 'u': { - unsigned int codepoint = 0; - hexToDigit(&codepoint, str + ++end); - end+=3; - /* check if this is a surrogate */ - if ((codepoint & 0xFC00) == 0xD800) { - end++; - if (str[end] == '\\' && str[end + 1] == 'u') { - unsigned int surrogate = 0; - hexToDigit(&surrogate, str + end + 2); - codepoint = - (((codepoint & 0x3F) << 10) | - ((((codepoint >> 6) & 0xF) + 1) << 16) | - (surrogate & 0x3FF)); - end += 5; - } else { - unescaped = "?"; - break; - } - } - - Utf32toUtf8(codepoint, utf8Buf); - unescaped = utf8Buf; - break; - } - default: - assert("this should never happen" == NULL); - } - yajl_buf_append(buf, unescaped, strlen(unescaped)); - beg = ++end; - } else { - end++; - } - } - yajl_buf_append(buf, str + beg, end - beg); -} |