Base64 to pdf c

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Base64 to pdf c

Libb64 is an ANSI C routine library for quick coding / decoding data data and from a base-coded format64. C ++ envelopes are included, as well as the source code for executables in standalone coding and decoding. Base64 uses a subset of Displayed ASCII characters and is therefore a useful encoding for storing binary data in a text file, such as

XML or send binary data to text only e-mail. I did this because I needed a rapid C ++ implementation of base64 coding and decoding, without license problems. Some implementations are released under the GNU / LPG or a BSD variant, which is what I need. Some decent are available in Java, but as mentioned, I need C ++ code. The available code is

also more slow and complicated to understand, use and maintain. Base64 Coding and decoding is ideal for being implemented using co-routine, which make the most compact code, easier to read and easier to use. Furthermore, the possibility of actually use a co-routine implementation in the production C ++ code is rare; I could not transmit the

possibility. For more information on this technique, see "Coroutines in C", from Simon Tatham, which can be found online here: sgtatham/coroutines.html and read the Section Implementation details at the bottom of this page. So, in which license, do you release this code? At the next section ... This work is released into the public domain. Basically it

is reduced to this: I put this work in the public domain, and you can take it and do what you want with it. An example of this "license" is the Creative Commons public domain license, a copy of which you can find in the license file in the distribution, and also online at PublicDomain / code can be built using standard and standard GCC instruments in

Linux (and others such as MingW and Cygwin) or using a Visual Studio solution. Currently, no installation script is available, but since the library is static and the executable is autonomous, this is not a big problem: simply copy the executable somewhere in your path. For the use of the Basi64 executable, see the next section, use the command line,

for details. The static library can be used together with the header files in the directory include incorporating and using the functionality in your application (see the programming section for more details.) The construction using the GNU tools unpack the tarbally somewhere and switch to the directory. Switch to the resulting Libb64-XXX directory

and run. The results will be a static library in the SRC directory and an executable file in the Base64 directory. Build with Microsoft Visual Studio C ++ Express 2010, I don't like doing it, but you can create the code using MS VCC ++ Express 2010, using the Base64.sln solution file in the basic sub-directory / VisualStudioProject. This will only build

the bases64 executable, putting it in the relevant Build directory. The execution of the basic program without parameters shows how to use it: $ ./base64 base64: coding and decoding files using base64 use: base64 [-e | -d] [Input] [output] in which [-E] Code the file input in the output file, [-D] will decode the input file in the output file and [INPUT]

and [OUTPUT] are I respectively Input and output file. For example, to encode a file, do the following: $ ./base64 -e file_a file_b file_b will now be the base base64 version of file_a. Similarly, doing the following: $ ./base64 -d file_b file_c will result from file_c, which will be identical to the original file_a. Some are also provided C ++, so you don't have

to dirty your hands. Coding from standard input to standard output is as simple as #include #include int main () {base64 :: encoder and; E.encode (std :: cin, std :: cout); Return 0; } It's damn fast, if I can tell you. Code C uses a small trick that has been used to implement coroutines, which can be said that this implementation is an example. example.

See how the Libb64 CodeBase compares with some other basic implementations available, see the available reference file in the source code) The trick provides for a switching declaration to legally cross the subscriptions. A very accurate and illuminating essay on C co-routine, using this method, can be found in the aforementioned "Coroutines in C",

from Simon Tatham: sgtatham / croroutines .html For example, a decompression routine rle, adapted to the article: 1 static int state = 0; 2 static int len, c; 3 switch (state) 4 {5 WHILE (1) 6 {7 C = Getchar (); 8 SE (C == EOF) return EOF; 9 IF (C == 0xFF) {10 Len = Getchar (); 11 C = Getchar (); 12 WHILE (LEN--) 13 {14 Status = 0; 15 return C; 16

Case 0: 17} 18} Else 19 Status = 1; 20 return C; 21 Case 1: 22} 23} 24} How can you see from this example, a coroutine depends on a state variable, which sets directly before leaving (lines 14 and 119). The next time the routine is inserted, the switch moves the control to the specific point directly after the previous output (lines 16 and 21). Hands

(as separate, in the mentioned article the combination of the high level setting, the various status settings, the return of a value and the labeling of the output point is wrapped in the macro #Define, making the structure of the Even more clear routines. Read the article, it's worth it) the obvious problem with such a routine is the static keywords. Any

static variables in a Doom spell function for multi-threaded applications. Furthermore, in situations where this coroutine is used more than other coroutines, the consistency can be ... disturbed. This is necessary. It is a structure for storing these variables, which is passed to the routine separately. This obviously breaks the modularity of the function,

since now the caller must worry and take care of the internal state of the routine (the Callee). The obvious solution would be to wrap the status together with the function in an object in C ++. This allows a quick and multi-thread implementation, which is safe to use and easy to understand and maintain. The base64 coding and decoding functionality

in this package is implemented exactly in this way, providing both a high-speed C interface and a wrapped C ++ interface which is low maintenance and comparable performance. Chris Venter: chris.venter [anti-spam] : Much thanks to the forge of origin to host this project. Base64 encoding / decoding (RFC1341). More ... #include

"includes.h" #include "os.h" #include "base64.h" Go to the source code of this file. Char * ?, base64_cecode (cost unsigned char * src, size_t len, size_t * out_len) ? ? base64 encoding. Char * ?, base64_decode not signed (cast not signed char * src, size_t len, size_t * out_len) ?, base64 decoding. Detailed description BASE64 Encoding / decoding

(RFC1341). Copyrightcopyright (c) 2005, Jouni Malinen This program is a free software; You can redistribute it and / or modify it pursuant to version 2 of the GNU General Public License 2 as published by the Free Software Foundation. Alternatively, this software can be distributed under the terms of the BSD license. See Readme and copy for more

details. Definition in basic file64.c. Documentation Function not signed CHAR * BASE64_DECODE (CONST CHAR * ?, SRC, SIZE_T_T? ? Len, Size_T * ? ? out_l��? ?) Basic Decode64. Parameters: SC? ? data to be decoded Len?, data length to be decoded out_len pointer to output Length Return of variables: Buffer allocated by byte out_len bytes of

decoded or null data on the error caller is responsible for the release of the returned buffer. Definition of line 106 of basic file64.c. Char * base64_cecode Signed (CONST CHAR * ? ? SRC, SIZE_T_T? ? Len, Size_T * ? ? out_l? ?) Basic encoding64. Parameters: SRC data is coded Len? ? Data length from coded out_len pinunter to the output length

variable or null if not used yields: allocated byte byte buffer, or o o The error caller is responsible for the release of the returned buffer. The returned buffer is terminated to facilitate use as a Cord C. The Nul terminator is not included in out_len. Definition of line 37 of basic file64.c. 1 / * 2 * Copyright (c) 1996-1999 through the Internet Software

Consortium. 3 * 4 * Authorization for use, copy, modify and distribute this software for any purpose to 5 * with or without commission is granted, provided that the aforementioned copyright notice above and this authorization is displayed in all Copies. 7 * 8 * The software is provided "as it is" and the Internet Software Consortium declines the decline

9 * All the guarantees regarding this software, including all the implicit 10 * guarantees of marketability and fitness. Under no circumstances the Internet software 11 * The consortium will be responsible for any special, direct, indirect or consequential damages 12 * or any damage resulting from loss of use, data or 13 * profits, both in action of the

contract, negligence or other 14 * Cake action, resulting from or in connection with the use or performance of this software 15 *. 16 * / 17 18 / * 19 * Portions Copyright (c) 1995 by International Business Machines, Inc. 20 * 21 * International Business Machines, Inc. (hereinafter called IBM) Grants 22 * ?? � 4); 141 output [2] = ((input [1] & 0x0f) > 6);

142 output [3] = Input [2] & 0x3f; 143 Assert (output [0] 6); 166 Assert (output [0] = Targsize) 217 ?? � 4; 227 target [tarindex + 1] = (pos - base64) & 0x0f) 228 = TARGSIZE) 236 Return (-1); 237 TARGET [TARINDEX] | = (POS - base64) >> 2; 238 TARGET [TARINDEX + 1] = ((POS - base64) & 0x03) 239 = TARGSIZE) 247 RETURN (-1); 248 Target

[Tarindex] | = (POS - base64); 249} 250 Tarindex ++; 251 Status = 0; 252 pause; 253 default: 254 aborts (); 255} 256} 257 258 / * 259 * We finished base-64 char decoding. Let's see if we finished 260 * on a boundary byte, and / or with incorrect end characters. 261 * / 262 263 IF (CH == Pad64) {/ * We have a char. * / 264 CH = * SRC ++; / * Jump,

get the next. * / 265 Switch (status) {266 Case 0: / * Invalido = In first position * / 267 Case 1: / * Invalid = in second position * / 268 Return (-1); 269 ?? �

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