Unicode and Python Chinese Processing
Http://blog.csdn.net/tingsking18/archive/2009/03/29/4033645.aspx
In python, uincode string processing has always been a confusing problem. Many Python enthusiasts are often confused about the differences between Unicode, UTF-8, and many other encodings. I used to be a member of this "brainstorming group", but after more than half a year of hard work, I finally figur
As far as I know, in Linux, the char type is 1 byte, wchar_t is 4 bytes, and Unicode is 2 bytes.
Library C provides functions of the wchar_t type, such as wcslen and wcscpy. Therefore, the processing of char and wchar_t types is not hindered in Linux. The problem is that our company's engine APIs are all Unicode-based. We can't find functions that process the Unicode
One-encoding history single-byte encoding
2.1.1 ASCII 0-127 7-bit representation2.1.2 ASCII extended code 0-255 8-bit representationCode Page: use the code page to switch the corresponding
Multi-byte encoding
2.1.3 dual-Byte Character Set DBCSOne or two bytes are used to represent characters."Country A and country B"12 1 2A: 0x41 medium: 0x8051B: 0x42 countries: 0x8253
1 2 3 4 5 60x41 0x80 0x51 0x42 0x82 0x53 A in Country B
In this way, multi-byte encoding is performed for both multibyte and sin
If you write programs on windows, I believe you will encounter conversion between Unicode and ANSI strings (string
To achieve conversion between Unicode and ANSI, I briefly introduced in a previous article: The vs series cstring to string method. In fact, the methods in this article are not described by me, simple and effective, and I am not very clear about the principle. Most people use the following tw
Does Unicode text Baidu (search engine) recognize it? In order to solve the full-text search of MySQL, I converted Chinese characters in the article into Unicode-encoded text display, such as: amp; #37325; amp; #26032; amp; #24320; amp; #22987; -- the webpage can be displayed as a Chinese character "start again" without processing ". So what I want to know is: do Un
First, Introduction
UTF-8 is an encoding of Unicode characters that are often used in Web applications, and the advantage of using UTF-8 is that it is a variable-length encoding, with a length of 1 bytes for ansii encoding, so that when a page with a large number of ASCII character sets is transmitted, Network bandwidth can be massively saved.
The UTF-8 signature (UTF-8 signature), also called the BOM (Byte Order mark), is a standard tag used to ide
Unicode programming in VC
In Windows, programming supports Unicode. The general trend is that the underlying system of Windows 2 k is Unicode-based. Even if you call the ansi api (end with a, such as setwidowstexta ), the system will also dynamically allocate a piece of memory on the default heap of your process, store the converted
According to the supplementary question in the previous article http://blog.csdn.net/fancylovejava/article/details/10142391With an understanding of the previous article, I probably know the Unicode encoding format.ANSI: The inner code range of the Chinese character area is high byte from B0-f7, low byte from A1-feUnicode: The Unicode encoding range for Chinese characters is \u4e00-\u9fa5 \uf900-\ufa2d, whic
Ansi string we are most familiar with, English occupies one byte, Chinese characters 2 bytes, ending with a \ 0, commonly used in txt text files.Unicode string. Each character (Chinese character or English letter) occupies 2 bytes. In the VC ++ world, Microsoft prefers Unicode, such as wchar_t.UTF8 is A form of Unicode compression. English A is expressed as 0x0041 in un
Take a look at Liaoche's Python2.7 tutorial in the afternoon, see the string and Encode section, have a little feeling, combine Cia Qingcai's Python blog to record this feeling:ASCII: is a byte (8bit, 0-255) of 127 letters for uppercase and lowercase letters, numbers and some symbols. It is mainly used to denote modern English and Western European languages.So there is a problem in dealing with Chinese, because Chinese processing requires at least two bytes, so China has developed a GB2312.As a
UnicodeUnicode( Uniform Code , universal Code, single code) is an industry standard in the field of computer science, including character set, encoding scheme, etc. Unicode is created to address the limitations of traditional character encoding schemes, which set a uniform and unique binary encoding for each character in each language to meet the requirements of cross-language, cross-platform text conversion and processing. ( The role of
After the Java environment is installed, the JDK's Bin directory has a native2ascii.exe that can achieve similar functions, but it can also achieve the same functionality through Java code.
String Conversion Unicode Java method code fragment:
Copy Code code as follows:
/**
* String Conversion Unicode
*/
public static string String2unicode (String string) {
StringBuffer
According to the supplementary question of the previous article http://blog.csdn.net/fancylovejava/article/details/10142391
With the understanding of the previous article, I have probably learned about the Unicode encoding format.
ANSI: The inner code range of the Chinese character area is high byte from B0-f7, low byte from A1-feUnicode: The Unicode encoding range for Chinese characters is \u4e00-\u9fa5 \u
Some time ago, in the participating projects encountered a Unicode and GB transcoding failure problem, some of the characters are not commonly used encoding has been translated into the "??", the Chinese characters did not show up, so they did some research on the related problems and finally solved the problem. Now, combining the previous two Unicode and GB fundamentals, this paper introduces the method of
, from the location code to the inner code, you need to add A0 on the high and low byte respectively.In DBCS, GB internal code storage format is always big endian, that is, high in front.The highest bit of the two bytes of the GB2312 is 1. But the code bit that meets this condition is only 128*128=16384. So the low-byte highest bits of GBK and GB18030 are probably not 1. However, this does not affect the parsing of DBCS character streams: When reading a DBCS character stream, you can encode the
The open method in the Python built-in library can read and write only ASCII code, and if you want to write Unicode characters, you need to use the codecs package.1 #-*-coding:utf-8-*-2 ImportCodecs3 ImportTraceback4Content = U'Hello'5f =None6 Try:7f = Codecs.open ('C:/test.txt','W','Utf-8')8 f.write (content)9 Exception:Ten PrintTraceback.format_exc () One finally: AF andF.close ()Python2 writes the Unicode
//Chinese converted to Unicode code value String str = "Too many people to buy, please try again later!" ";Char[]archar=str.tochararray ();intivalue=0; String ustr= ""; for(int I=0;ilength; i++) {
ivalue= (
int
) Str.charat (i);
if (ivalueustr+="\\" +integer. tohexstring (ivalue); }Else{ustr+="\\u" +integer. tohexstring (ivalue); }}//UnicodeCode Valueconvert into ChineseString str ="Too many people to buy, please try again l
The following is a detailed analysis of the use of the macro #val in C + + under Unicode, the need for friends can refer to the following
#define CHECK (condition) cout
The above macro, when you CHECK (MyFunc ()); , suppose MyFunc returns false and outputs: Check Failed:myfunc ()
In a macro, #condition converts a parameter to a string, which makes it easy to print out the function name when the log is printed, and so on
This may all know, too small
Unicode encoding of common Chinese fonts in CSSIn the Web page production, the most commonly used is the font attributes, in the adjustment page compatibility, also often found that the cause of the font name is incompatible or garbled, the following gives a few commonly used fonts Ucicode coding control, easy to use.
Song Body
SimSun
\5b8b\4f53
Blackbody
Simhei
\9ed1\4f53
Microsoft Ya-Blac
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