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Diffstat (limited to 'zopfli_bin.c')
| -rw-r--r-- | zopfli_bin.c | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/zopfli_bin.c b/zopfli_bin.c deleted file mode 100644 index 8a147ef..0000000 --- a/zopfli_bin.c +++ /dev/null @@ -1,203 +0,0 @@ -/* -Copyright 2011 Google Inc. All Rights Reserved. - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. - -Author: lode.vandevenne@gmail.com (Lode Vandevenne) -Author: jyrki.alakuijala@gmail.com (Jyrki Alakuijala) -*/ - -/* -Zopfli compressor program. It can output gzip-, zlib- or deflate-compatible -data. By default it creates a .gz file. This tool can only compress, not -decompress. Decompression can be done by any standard gzip, zlib or deflate -decompressor. -*/ - -#include <assert.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "deflate.h" -#include "gzip_container.h" -#include "zlib_container.h" - -/* -Loads a file into a memory array. -*/ -static void LoadFile(const char* filename, - unsigned char** out, size_t* outsize) { - FILE* file; - - *out = 0; - *outsize = 0; - file = fopen(filename, "rb"); - if (!file) return; - - fseek(file , 0 , SEEK_END); - *outsize = ftell(file); - rewind(file); - - *out = (unsigned char*)malloc(*outsize); - - if (*outsize && (*out)) { - size_t testsize = fread(*out, 1, *outsize, file); - if (testsize != *outsize) { - /* It could be a directory */ - free(*out); - *out = 0; - *outsize = 0; - } - } - - assert(!(*outsize) || out); /* If size is not zero, out must be allocated. */ - fclose(file); -} - -/* -Saves a file from a memory array, overwriting the file if it existed. -*/ -static void SaveFile(const char* filename, - const unsigned char* in, size_t insize) { - FILE* file = fopen(filename, "wb" ); - assert(file); - fwrite((char*)in, 1, insize, file); - fclose(file); -} - -/* -outfilename: filename to write output to, or 0 to write to stdout instead -*/ -static void CompressFile(const ZopfliOptions* options, - ZopfliFormat output_type, - const char* infilename, - const char* outfilename) { - unsigned char* in; - size_t insize; - unsigned char* out = 0; - size_t outsize = 0; - LoadFile(infilename, &in, &insize); - if (insize == 0) { - fprintf(stderr, "Invalid filename: %s\n", infilename); - return; - } - - ZopfliCompress(options, output_type, in, insize, &out, &outsize); - - if (outfilename) { - SaveFile(outfilename, out, outsize); - } else { - size_t i; - for (i = 0; i < outsize; i++) { - /* Works only if terminal does not convert newlines. */ - printf("%c", out[i]); - } - } - - free(out); - free(in); -} - -/* -Add two strings together. Size does not matter. Result must be freed. -*/ -static char* AddStrings(const char* str1, const char* str2) { - size_t len = strlen(str1) + strlen(str2); - char* result = (char*)malloc(len + 1); - if (!result) exit(-1); /* Allocation failed. */ - strcpy(result, str1); - strcat(result, str2); - return result; -} - -static char StringsEqual(const char* str1, const char* str2) { - return strcmp(str1, str2) == 0; -} - -int main(int argc, char* argv[]) { - ZopfliOptions options; - ZopfliFormat output_type = ZOPFLI_FORMAT_GZIP; - const char* filename = 0; - int output_to_stdout = 0; - int i; - - ZopfliInitOptions(&options); - - for (i = 1; i < argc; i++) { - const char* arg = argv[i]; - if (StringsEqual(arg, "-v")) options.verbose = 1; - else if (StringsEqual(arg, "-c")) output_to_stdout = 1; - else if (StringsEqual(arg, "--deflate")) { - output_type = ZOPFLI_FORMAT_DEFLATE; - } - else if (StringsEqual(arg, "--zlib")) output_type = ZOPFLI_FORMAT_ZLIB; - else if (StringsEqual(arg, "--gzip")) output_type = ZOPFLI_FORMAT_GZIP; - else if (StringsEqual(arg, "--splitlast")) options.blocksplittinglast = 1; - else if (arg[0] == '-' && arg[1] == '-' && arg[2] == 'i' - && arg[3] >= '0' && arg[3] <= '9') { - options.numiterations = atoi(arg + 3); - } - else if (StringsEqual(arg, "-h")) { - fprintf(stderr, - "Usage: zopfli [OPTION]... FILE\n" - " -h gives this help\n" - " -c write the result on standard output, instead of disk" - " filename + '.gz'\n" - " -v verbose mode\n" - " --i# perform # iterations (default 15). More gives" - " more compression but is slower." - " Examples: --i10, --i50, --i1000\n"); - fprintf(stderr, - " --gzip output to gzip format (default)\n" - " --zlib output to zlib format instead of gzip\n" - " --deflate output to deflate format instead of gzip\n" - " --splitlast do block splitting last instead of first\n"); - return 0; - } - } - - if (options.numiterations < 1) { - fprintf(stderr, "Error: must have 1 or more iterations"); - return 0; - } - - for (i = 1; i < argc; i++) { - if (argv[i][0] != '-') { - char* outfilename; - filename = argv[i]; - if (output_to_stdout) { - outfilename = 0; - } else if (output_type == ZOPFLI_FORMAT_GZIP) { - outfilename = AddStrings(filename, ".gz"); - } else if (output_type == ZOPFLI_FORMAT_ZLIB) { - outfilename = AddStrings(filename, ".zlib"); - } else { - assert(output_type == ZOPFLI_FORMAT_DEFLATE); - outfilename = AddStrings(filename, ".deflate"); - } - if (options.verbose && outfilename) { - fprintf(stderr, "Saving to: %s\n", outfilename); - } - CompressFile(&options, output_type, filename, outfilename); - free(outfilename); - } - } - - if (!filename) { - fprintf(stderr, - "Please provide filename\nFor help, type: %s -h\n", argv[0]); - } - - return 0; -} |