Because there are too many quantities, it is different from English with ASCII code, which uses two bytes.
Representation. By calculating these two bytes, we can get the Chinese characters represented in
The location in the text library. Read several bytes of this location to get dot matrix information indicating this Chinese character. Have
This information can be displayed in DOS or Windows, respectively. In fact,
Saved in the text file is two byte encodings corresponding to each Chinese character, and the display problem is operated by Chinese.
The system is automatically resolved.
Chinese character encoding is not uniform, we use the GB code, and the Taiwan area is BIG5 code. BIG5
The code file is saved in the code file, and the Chinese characters are saved in the GB code file.
The corresponding GB coding (this is also the "garbled phenomenon"). Therefore, the key to the conversion work is that there is one
Record each BIG5 encoding the code table file corresponding to GB encoding.
First step to make a code table file
The BIG5 code coding rule is this: Each Chinese character consists of two bytes, the first byte ranges from
0x81-0XFE, a total of 126 species. The second byte range is 0x40-0x7e, respectively.
0xA1-0XFE, a total of 157 species. That is, use these two bytes to define 126 * 157 = 19
782 Chinese characters. Part of these Chinese characters is usually used, such as one, Ding, these words
We call us common words, its BIG5 code is 0xA440-0XC671, a total of 5401. Not commonly used word
, If you are abused, we call us commonly used words, range 0xc940-0xf9fe,
7652, the remaining is some special characters.
The principle of making a code table file is this: first write all the BIG5 encodes into a file, then
, Using software with BIG5 code to GB code conversion function, such as earth village, Oriental expressway,
Four-way persons, convert files into GB code files, and get the code table file.
The following source program writes all possible BIG5 encoding (0xA100-0xFeff) to file "table.
TXT".
// Turbo C 3.0
#include
#include
Void main () {
File * codefile;
INT I, J, K;
Codefile = FOPEN ("Table.txt", "W B");
For (i = 0xA1; i <= 0xfe; i ) {
For (j = 0x00; j <= 0xff; j ) {
FWRITE (& I, 1, 1, Codefile);
FWRITE (& J, 1, 1, Codefile);
}
Fclose (codefile);
Return;
}
Run Earth Village, Orient Express or Quartent Practice, turn "Table.txt" from the BIG5 code to GB code,
That is, get the code table file.
Second step conversion
The following source program converts the BIG5 code file to the GB code file.
// Turbo C 3.0
#include
#include
Void main () {
INT Que, WEI;
File * SourceFile;
File * Tabfile;
File * destfile;
SourceFile = FOPEN ("BIG.TXT '," R B ");
// BIG5 code file Tabfile = fopen ("Table.txt", 'R B ");
// code table file
Destfile = FOPEN ("GB.TXT", "W B");
// Convert the generated GB code file
While (! feof (Sourcefile) {
Fread (& Que, 1, 1, Sourcefile);
IF (SourceFile) {
Break;
IF (Que> = 0xA1 && Que <= 0xfe)
// Whether the rebel is Chinese characters (BIG5 code)
{FREAD (& wei, 1, 1, sourcefile);
IF (WEI <0xA1) Wei = WEI - 0x40;
IF (wei> = 0xa1) Wei = wei - 0xa1 0x7e - 0x40 1;
FSeek (Tabfile, 2 * ((Que -0xa1) * (0xfe - 0xa1 1 0x7e - 0x40 1
) Wei), seek_set);
Fread (& que, 1, 1, tabfile);
Fread (& wei, 1, 1, tabfile);
FWRITE (& Que, 1, 1, Destfile);
FWRITE (& wei, 1, 1, destfile);
}
Else
FWRITE (& que, 1, 1, destfile); //
}
Fclose (Sourcefile);
Fclose (tabfile);
Fclose (destfile);
Return;
}
