Using Libb64 for BASE64 encoding in C language

Tag: Write for PAC bat language color txt pil buffer

Libb64http://sourceforge.net/projects/libb64

The following is demo

Clibb64demo.c

#include <stdio.h>#include<string.h>#include"libb64/cencode.h"#include"libb64/cdecode.h"voidBase64encodestring (Const Char*texttoencode,Char*buffer);voidBase64decodestring (Const Char*codetodecode,Char*buffer);voidBase64encodefile (file *filetoencode, file *encodedfile);voidBase64decodefile (file *encodedfile, file *decodedfile);intMain () {Const Char*text ="Matt Damon"; Charbuffer[ +];    Base64encodestring (text, buffer); printf ("%s", buffer); Const Char*code ="r29vzcbxawxsieh1bnrpbmc=";    Base64decodestring (code, buffer); printf ("%s\n", buffer); Const Char*inputfilename ="E:/packages/java/android/docs-24_r01.zip"; FILE*inputfile = fopen (InputFileName,"RB"); if(inputfile) {Const Char*encodedfilename ="E:/packages/java/android/docs-24_r01.zip.txt"; FILE*encodedfile = fopen (Encodedfilename,"WB"); if(encodedfile) {base64encodefile (inputfile, encodedfile);        Fclose (Encodedfile); }        Elseprintf ("cannot open file:%s", Encodedfile);    Fclose (Inputfile); }    Elseprintf ("cannot open file:%s", Inputfile); Const Char*encodedfilename ="En_office_professional_2007_cd_x12-42316.iso.txt"; FILE*encodedfile = fopen (Encodedfilename,"RB"); if(encodedfile) {Const Char*decodedfilename ="Office"; FILE*decodedfile = fopen (Decodedfilename,"WB"); if(decodedfile) {base64decodefile (encodedfile, decodedfile);        Fclose (Decodedfile); }        Elseprintf ("cannot open file:%s", Decodedfile);    Fclose (Encodedfile); }    Elseprintf ("cannot open file:%s", Encodedfile); return 0;}voidBase64encodestring (Const Char*texttoencode,Char*buffer)    {Base64_encodestate state; Base64_init_encodestate (&State ); intNumberofencodedbytes = Base64_encode_block (Texttoencode, strlen (texttoencode), buffer, &State ); Numberofencodedbytes+ = base64_encode_blockend (buffer + numberofencodedbytes, &State ); Buffer[numberofencodedbytes]=' /';}voidBase64decodestring (Const Char*codetodecode,Char*buffer)    {Base64_decodestate state; Base64_init_decodestate (&State ); intNumberofcharacters = Base64_decode_block (Codetodecode, strlen (codetodecode), buffer, &State ); Buffer[numberofcharacters]=' /';}voidBase64encodefile (file *filetoencode, file *encodedfile) {    Charreadbuffer[1024x768]; Charencodedbuffer[2048]; intnumberofencodedbytes;    Base64_encodestate State; Base64_init_encodestate (&State );  while(!feof (Filetoencode)) {size_t numberofobjects= Fread (Readbuffer,sizeof(Char),1024x768, Filetoencode); Numberofencodedbytes= Base64_encode_block (Readbuffer, Numberofobjects, Encodedbuffer, &State ); Fwrite (Encodedbuffer,sizeof(Char), numberofencodedbytes, encodedfile); } numberofencodedbytes= Base64_encode_blockend (Encodedbuffer, &State ); Fwrite (Encodedbuffer,sizeof(Char), numberofencodedbytes, encodedfile);}voidBase64decodefile (file *encodedfile, file *decodedfile) {    Charinputbuffer[1024x768]; Chardecodedbuffer[2048]; intnumberofdecodedbytes;    Base64_decodestate State; Base64_init_decodestate (&State );  while(!feof (Encodedfile)) {size_t numberofcharacters= Fread (InputBuffer,sizeof(Char),1024x768, Encodedfile); Numberofdecodedbytes= Base64_decode_block (InputBuffer, Numberofcharacters, Decodedbuffer, &State ); Fwrite (Decodedbuffer,sizeof(Char), numberofdecodedbytes, decodedfile); }}

Compilation.bat

Gcc-std=c11 clibb64demo.c Libb64/*.c-o Clibb64democlibb64demo

Using Libb64 for BASE64 encoding in C language