From eac2c3c67f9113a225fb6667df862edd30366931 Mon Sep 17 00:00:00 2001 From: Lasse Collin Date: Fri, 9 Feb 2024 17:20:31 +0200 Subject: Doc: Remove doc/examples_old. It was good to keep these around in parallel with the newer examples but I think it's OK to remove the old ones at this point. --- doc/examples_old/xz_pipe_comp.c | 127 -------------------------------------- doc/examples_old/xz_pipe_decomp.c | 123 ------------------------------------ 2 files changed, 250 deletions(-) delete mode 100644 doc/examples_old/xz_pipe_comp.c delete mode 100644 doc/examples_old/xz_pipe_decomp.c (limited to 'doc/examples_old') diff --git a/doc/examples_old/xz_pipe_comp.c b/doc/examples_old/xz_pipe_comp.c deleted file mode 100644 index 9f9224bc..00000000 --- a/doc/examples_old/xz_pipe_comp.c +++ /dev/null @@ -1,127 +0,0 @@ -/* - * xz_pipe_comp.c - * A simple example of pipe-only xz compressor implementation. - * version: 2010-07-12 - by Daniel Mealha Cabrita - * Not copyrighted -- provided to the public domain. - * - * Compiling: - * Link with liblzma. GCC example: - * $ gcc -llzma xz_pipe_comp.c -o xz_pipe_comp - * - * Usage example: - * $ cat some_file | ./xz_pipe_comp > some_file.xz - */ - -#include -#include -#include -#include -#include - - -/* COMPRESSION SETTINGS */ - -/* analogous to xz CLI options: -0 to -9 */ -#define COMPRESSION_LEVEL 6 - -/* boolean setting, analogous to xz CLI option: -e */ -#define COMPRESSION_EXTREME true - -/* see: /usr/include/lzma/check.h LZMA_CHECK_* */ -#define INTEGRITY_CHECK LZMA_CHECK_CRC64 - - -/* read/write buffer sizes */ -#define IN_BUF_MAX 4096 -#define OUT_BUF_MAX 4096 - -/* error codes */ -#define RET_OK 0 -#define RET_ERROR_INIT 1 -#define RET_ERROR_INPUT 2 -#define RET_ERROR_OUTPUT 3 -#define RET_ERROR_COMPRESSION 4 - - -/* note: in_file and out_file must be open already */ -int xz_compress (FILE *in_file, FILE *out_file) -{ - uint32_t preset = COMPRESSION_LEVEL | (COMPRESSION_EXTREME ? LZMA_PRESET_EXTREME : 0); - lzma_check check = INTEGRITY_CHECK; - lzma_stream strm = LZMA_STREAM_INIT; /* alloc and init lzma_stream struct */ - uint8_t in_buf [IN_BUF_MAX]; - uint8_t out_buf [OUT_BUF_MAX]; - size_t in_len; /* length of useful data in in_buf */ - size_t out_len; /* length of useful data in out_buf */ - bool in_finished = false; - bool out_finished = false; - lzma_action action; - lzma_ret ret_xz; - int ret; - - ret = RET_OK; - - /* initialize xz encoder */ - ret_xz = lzma_easy_encoder (&strm, preset, check); - if (ret_xz != LZMA_OK) { - fprintf (stderr, "lzma_easy_encoder error: %d\n", (int) ret_xz); - return RET_ERROR_INIT; - } - - while ((! in_finished) && (! out_finished)) { - /* read incoming data */ - in_len = fread (in_buf, 1, IN_BUF_MAX, in_file); - - if (feof (in_file)) { - in_finished = true; - } - if (ferror (in_file)) { - in_finished = true; - ret = RET_ERROR_INPUT; - } - - strm.next_in = in_buf; - strm.avail_in = in_len; - - /* if no more data from in_buf, flushes the - internal xz buffers and closes the xz data - with LZMA_FINISH */ - action = in_finished ? LZMA_FINISH : LZMA_RUN; - - /* loop until there's no pending compressed output */ - do { - /* out_buf is clean at this point */ - strm.next_out = out_buf; - strm.avail_out = OUT_BUF_MAX; - - /* compress data */ - ret_xz = lzma_code (&strm, action); - - if ((ret_xz != LZMA_OK) && (ret_xz != LZMA_STREAM_END)) { - fprintf (stderr, "lzma_code error: %d\n", (int) ret_xz); - out_finished = true; - ret = RET_ERROR_COMPRESSION; - } else { - /* write compressed data */ - out_len = OUT_BUF_MAX - strm.avail_out; - fwrite (out_buf, 1, out_len, out_file); - if (ferror (out_file)) { - out_finished = true; - ret = RET_ERROR_OUTPUT; - } - } - } while (strm.avail_out == 0); - } - - lzma_end (&strm); - return ret; -} - -int main () -{ - int ret; - - ret = xz_compress (stdin, stdout); - return ret; -} - diff --git a/doc/examples_old/xz_pipe_decomp.c b/doc/examples_old/xz_pipe_decomp.c deleted file mode 100644 index fb5ad895..00000000 --- a/doc/examples_old/xz_pipe_decomp.c +++ /dev/null @@ -1,123 +0,0 @@ -/* - * xz_pipe_decomp.c - * A simple example of pipe-only xz decompressor implementation. - * version: 2012-06-14 - by Daniel Mealha Cabrita - * Not copyrighted -- provided to the public domain. - * - * Compiling: - * Link with liblzma. GCC example: - * $ gcc -llzma xz_pipe_decomp.c -o xz_pipe_decomp - * - * Usage example: - * $ cat some_file.xz | ./xz_pipe_decomp > some_file - */ - -#include -#include -#include -#include -#include - - -/* read/write buffer sizes */ -#define IN_BUF_MAX 4096 -#define OUT_BUF_MAX 4096 - -/* error codes */ -#define RET_OK 0 -#define RET_ERROR_INIT 1 -#define RET_ERROR_INPUT 2 -#define RET_ERROR_OUTPUT 3 -#define RET_ERROR_DECOMPRESSION 4 - - -/* note: in_file and out_file must be open already */ -int xz_decompress (FILE *in_file, FILE *out_file) -{ - lzma_stream strm = LZMA_STREAM_INIT; /* alloc and init lzma_stream struct */ - const uint32_t flags = LZMA_TELL_UNSUPPORTED_CHECK | LZMA_CONCATENATED; - const uint64_t memory_limit = UINT64_MAX; /* no memory limit */ - uint8_t in_buf [IN_BUF_MAX]; - uint8_t out_buf [OUT_BUF_MAX]; - size_t in_len; /* length of useful data in in_buf */ - size_t out_len; /* length of useful data in out_buf */ - bool in_finished = false; - bool out_finished = false; - lzma_action action; - lzma_ret ret_xz; - int ret; - - ret = RET_OK; - - /* initialize xz decoder */ - ret_xz = lzma_stream_decoder (&strm, memory_limit, flags); - if (ret_xz != LZMA_OK) { - fprintf (stderr, "lzma_stream_decoder error: %d\n", (int) ret_xz); - return RET_ERROR_INIT; - } - - while ((! in_finished) && (! out_finished)) { - /* read incoming data */ - in_len = fread (in_buf, 1, IN_BUF_MAX, in_file); - - if (feof (in_file)) { - in_finished = true; - } - if (ferror (in_file)) { - in_finished = true; - ret = RET_ERROR_INPUT; - } - - strm.next_in = in_buf; - strm.avail_in = in_len; - - /* if no more data from in_buf, flushes the - internal xz buffers and closes the decompressed data - with LZMA_FINISH */ - action = in_finished ? LZMA_FINISH : LZMA_RUN; - - /* loop until there's no pending decompressed output */ - do { - /* out_buf is clean at this point */ - strm.next_out = out_buf; - strm.avail_out = OUT_BUF_MAX; - - /* decompress data */ - ret_xz = lzma_code (&strm, action); - - if ((ret_xz != LZMA_OK) && (ret_xz != LZMA_STREAM_END)) { - fprintf (stderr, "lzma_code error: %d\n", (int) ret_xz); - out_finished = true; - ret = RET_ERROR_DECOMPRESSION; - } else { - /* write decompressed data */ - out_len = OUT_BUF_MAX - strm.avail_out; - fwrite (out_buf, 1, out_len, out_file); - if (ferror (out_file)) { - out_finished = true; - ret = RET_ERROR_OUTPUT; - } - } - } while (strm.avail_out == 0); - } - - /* Bug fix (2012-06-14): If no errors were detected, check - that the last lzma_code() call returned LZMA_STREAM_END. - If not, the file is probably truncated. */ - if ((ret == RET_OK) && (ret_xz != LZMA_STREAM_END)) { - fprintf (stderr, "Input truncated or corrupt\n"); - ret = RET_ERROR_DECOMPRESSION; - } - - lzma_end (&strm); - return ret; -} - -int main () -{ - int ret; - - ret = xz_decompress (stdin, stdout); - return ret; -} - -- cgit v1.2.3