diff options
Diffstat (limited to 'depends')
46 files changed, 17685 insertions, 0 deletions
diff --git a/depends/lzma/CMakeLists.txt b/depends/lzma/CMakeLists.txt new file mode 100644 index 00000000..4df2b762 --- /dev/null +++ b/depends/lzma/CMakeLists.txt @@ -0,0 +1,54 @@ +CMAKE_MINIMUM_REQUIRED(VERSION 2.6) + +PROJECT(lzma) + +IF (WIN32) + ADD_DEFINITIONS(-DWIN32) +ENDIF (WIN32) + +SET(SRCS +# original code by Igor Pavlov +# Lzma version 4.63 +# Minified ~_~ +pavlov/7zCrc.c +pavlov/7zCrc.h +pavlov/LzFind.c +pavlov/LzFind.h +pavlov/LzHash.h +pavlov/LzmaDec.c +pavlov/LzmaDec.h +pavlov/LzmaEnc.c +pavlov/LzmaEnc.h +pavlov/LzmaLib.c +pavlov/LzmaLib.h +pavlov/Types.h + +# Public headers +include/common.h +include/compress.h +include/decompress.h +include/simple.h + +# Wrapper by Lloyd Hilaiel (lloyd@hilaiel.com) +wrapper/common_internal.c +wrapper/common_internal.h +wrapper/compress.c +wrapper/decompress.c +wrapper/simple.c +wrapper/lzip_header.c +wrapper/lzip_header.h +wrapper/lzma_header.c +wrapper/lzma_header.h +) + +# an include directory to allow easylzma implementation to find public +# headers +INCLUDE_DIRECTORIES(include) +ADD_LIBRARY(lzma STATIC ${SRCS}) + +# lzma compress/decompress tool +ADD_EXECUTABLE(elzma elzma.c) +TARGET_LINK_LIBRARIES(elzma lzma) +# a simple test... +ADD_EXECUTABLE(easylzma_test easylzma_test.c) +TARGET_LINK_LIBRARIES(easylzma_test lzma) diff --git a/depends/lzma/LICENSE.txt b/depends/lzma/LICENSE.txt new file mode 100644 index 00000000..a8a34e6a --- /dev/null +++ b/depends/lzma/LICENSE.txt @@ -0,0 +1,9 @@ +# Written in 2009 by Lloyd Hilaiel +# Butchered in 2013 by Petr Mrazek +# +# License +# +# All the cruft you find here is public domain. You don't have to credit +# anyone to use this code, but my personal request is that you mention +# Igor Pavlov for his hard, high quality work. +# diff --git a/depends/lzma/easylzma_test.c b/depends/lzma/easylzma_test.c new file mode 100644 index 00000000..69858728 --- /dev/null +++ b/depends/lzma/easylzma_test.c @@ -0,0 +1,282 @@ +/* + * Written in 2009 by Lloyd Hilaiel + * + * License + * + * All the cruft you find here is public domain. You don't have to credit + * anyone to use this code, but my personal request is that you mention + * Igor Pavlov for his hard, high quality work. + * + * Various compiled-in tests for the easylzma library which excercise + * API correctness and handling of corrupt data. + */ + +#include "simple.h" + +#include <stdio.h> +#include <string.h> + +static const char *sampleData = + "Overview\n" + "\n" + "Easylzma is a C library and command line tools for LZMA compression and \n" + "decompression. It uses a Igor Pavlov's reference implementation and SDK\n" + "written in C.\n" + "\n" + "License\n" + "\n" + "All the cruft you find here is public domain. You don't have to credit\n" + "anyone to use this code, but my personal request is that you mention\n" + "Igor Pavlov for his hard, high quality work.\n" + "\n" + "Project Goals\n" + "\n" + "1. A tiny C wrapper and portable build system around a subset of\n" + " Igor Pavlov's public domain LZMA compression and decompression\n" + " implementation.\n" + "2. A tiny and straighforward API\n" + "3. Support for multiple different prominent LZMA file formats (see section on\n" + " file formats below)\n" + "4. easy to build and use everywhere (doze and nix alike)\n" + "5. public domain licensing through and through. (hats off to Igor)\n" + "\n" + "Current State:\n" + "\n" + "THIS IS A WORK IN PROGRESS. The code here should be considered pre-alpha,\n" + "and this should only be used by tinkerers or hackers at this point. Once\n" + "feature completion is attained this message will be updated. See the\n" + "TODO file distributed with the source for remaining work to be done.\n" + "\n" + "Platforms Supported\n" + "\n" + "0.0.2 has been successfully compiled and run basic round trip testing\n" + "on the following platforms & compilers:\n" + "\n" + " * win32 - visual studio 2005\n" + " * osx - 10.4 & 10.5 (intel)\n" + " * netbsd ppc - 4.0.1 with gcc 4.1.2\n" + " (NOTE: memory allocation errors when dict size is default)\n" + " * freebsd 6.1 - amd64 gcc 3.4.4\n" + "\n" + "Features\n" + "\n" + "XXX: write me (and the code)\n" + "\n" + "Usage\n" + "\n" + "XXX: write me (and the code)\n" + "\n" + "The Saga of LZMA File Formats, and a couple cents.\n" + "\n" + "As far as I can tell, there are at least four different ways to put LZMA\n" + "compressed data in a stream:\n" + "\n" + "1. The LZMA-Alone format, which consists of a 13 byte header including\n" + " compression properties, dictionary size, and the uncompressed size of\n" + " the file, followed by compressed data. This format has some support\n" + " in Igor Pavlov's reference implementation and is in widespread use, as\n" + " it's supported by lzmautils: http://tukaani.org/lzma/\n" + "\n" + " The canonical (afaict) implementation of this format (lzmautis) is\n" + " BSD licensed.\n" + "\n" + "2. The lzip format (http://www.nongnu.org/lzip/lzip.html) - which\n" + " includes a CRC footer and leading \"magic number\". The former\n" + " affords data integrity gaurantees, while the latter simplifies\n" + " heuristic determination of file format. This format looks to have\n" + " reasonably widespread usage, though not quite as significant as\n" + " LZMA-Alone.\n" + "\n" + " The only implementation of this format I can find (lzip) is GPL licensed.\n" + "\n" + "3. the xz format ( http://tukaani.org/xz/xz-file-format.txt ) which is\n" + " a more complex representation that includes CRC support and a magic\n" + " number. This format is to be supported by the next iteration of\n" + " XZ Utils which is currently in beta. The source may be obtained\n" + " here: git://ctrl.tukaani.org/xz.git\n" + "\n" + " This format will address some criticisms to the LZMA-Alone format and\n" + " was developed collaboratively by Lasse Collin (the current maintainer\n" + " of XZ utils) and Igor Pavlov (the author of 7zip and the refrence\n" + " implementation of LZMA).\n" + "\n" + " The xz format will employ LZMA2 which consists of extensions on top\n" + " of LZMA, in the xz utils maintainer's words:\n" + "\n" + " \"The primary compression algorithm in .xz is currently LZMA2, which\n" + " is an extension on top of the orignal LZMA to fix a few practical\n" + " issues, like adding support for flushing the encoder (equivalent\n" + " to zlib's Z_SYNC_FLUSH), which isn't possible with the original\n" + " LZMA.\"\n" + "\n" + " Again, maintainers words, regarding licensing:\n" + "\n" + " \"XZ Utils currently contains a zlib-like compression library and a \n" + " gzip-like command line tool. It's currently under LGPLv2.1+ but I will \n" + " put it into the public domain before the first stable release.\"\n" + "\n" + "4. The 7zip disk format which can contain multiple files possibly stored in\n" + " LZMA compressed format.\n" + "\n" + "Given the state of things, the goal of this project is to develop something\n" + "based on the existing formats, and quickly leverage code generated by the XZ\n" + "Utils project, or simply kill this thing if that project produces something\n" + "that's easy to embed and has a clean API at a similar level of abstraction\n" + "as easylzma.\n" + "\n" + "lloyd - sometime in oh nine.\n"; + +/* a test that we can round trip compress/decompress data using LZMA or LZIP + * formats */ +static int roundTripTest(elzma_file_format format) +{ + int rc; + unsigned char *compressed; + unsigned char *decompressed; + size_t sz; + + rc = simpleCompress(format, (unsigned char *)sampleData, strlen(sampleData), &compressed, + &sz); + + if (rc != ELZMA_E_OK) + return rc; + + /* gross assurance that compression is actually compressing */ + if (sz > strlen(sampleData)) + { + free(compressed); + return 1; + } + + rc = simpleDecompress(format, compressed, sz, &decompressed, &sz); + + free(compressed); + + if (rc != ELZMA_E_OK) + return rc; + + if (sz != strlen(sampleData) || 0 != memcmp(decompressed, sampleData, sz)) + { + free(decompressed); + return 1; + } + + return ELZMA_E_OK; +} + +/* "correct" lzip generated from the lzip program */ +/*|LZIP...3.?..????|*/ +/*|....?e2~........|*/ +static unsigned char correctLzip[] = { + 0x4c, 0x5a, 0x49, 0x50, 0x01, 0x0c, 0x00, 0x33, 0x1b, 0xec, 0x15, 0x07, 0xff, 0xff, + 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0xa8, 0x65, 0x32, 0x7e, 0x04, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + +/* "correct" lzip generated from lzma utils */ +static unsigned char correctLzma[] = {0x5d, 0x00, 0x00, 0x80, 0x00, 0x04, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x33, 0x1b, 0xec, 0x14, 0x00, 0x00, 0x00}; + +/* lzip with a bad CRC */ +static unsigned char corruptCRC[] = { + 0x4c, 0x5a, 0x49, 0x50, 0x01, 0x0c, 0x00, 0x33, 0x1b, 0xec, 0x15, 0x07, 0xff, 0xff, + 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0xa8, 0x65, 0x31, 0x7e, 0x04, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + +/* lzip with a bad uncompressed size */ +static unsigned char corruptSize[] = { + 0x4c, 0x5a, 0x49, 0x50, 0x01, 0x0c, 0x00, 0x33, 0x1b, 0xec, 0x15, 0x07, 0xff, 0xff, + 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0xa8, 0x65, 0x32, 0x7e, 0x04, 0x01, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + +/* lzma with a bad uncompressed size */ +static unsigned char corruptSizeLzma[] = {0x5d, 0x00, 0x00, 0x80, 0x00, 0x04, 0x01, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x33, 0x1b, 0xec, 0x14, 0x00, 0x00, 0x00}; + +/* lzma with a bad uncompressed size */ +static unsigned char corruptSizeLzma2[] = {0x5d, 0x00, 0x00, 0x80, 0x00, 0x03, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x33, 0x1b, 0xec, 0x14, 0x00, 0x00, 0x00}; + +/* tests */ +static struct +{ + const char *testName; /* the name of the test */ + int expectedCode; /* the expected output of the test */ + elzma_file_format format; + unsigned char *data; /* input data */ + unsigned int dataSize; +} tests[] = { + {"correct lzip", ELZMA_E_OK, ELZMA_lzip, correctLzip, sizeof(correctLzip)}, + {"lzip as lzma", ELZMA_E_DECOMPRESS_ERROR, ELZMA_lzma, correctLzip, sizeof(correctLzip)}, + {"correct lzma", ELZMA_E_OK, ELZMA_lzma, correctLzma, sizeof(correctLzma)}, + {"lzma as lzip", ELZMA_E_CORRUPT_HEADER, ELZMA_lzip, correctLzma, sizeof(correctLzma)}, + {"corrupt crc", ELZMA_E_CRC32_MISMATCH, ELZMA_lzip, corruptCRC, sizeof(corruptCRC)}, + {"bad lzip size", ELZMA_E_SIZE_MISMATCH, ELZMA_lzip, corruptSize, sizeof(corruptSize)}, + {"bad lzma size", ELZMA_E_INSUFFICIENT_INPUT, ELZMA_lzma, + corruptSizeLzma, sizeof(corruptSizeLzma)}, + {"bad lzma size 2", ELZMA_E_SIZE_MISMATCH, ELZMA_lzma, + corruptSizeLzma2, sizeof(corruptSizeLzma2)}}; + +int main(void) +{ + unsigned int i; + unsigned int testsPassed = 0; + unsigned int testsRun = 0; + + int rc = 0; + + printf("round trip lzma test: "); + fflush(stdout); + testsRun++; + if (ELZMA_E_OK != (rc = roundTripTest(ELZMA_lzma))) + { + printf("fail! (%d)\n", rc); + } + else + { + testsPassed++; + printf("ok\n"); + } + + printf("round trip lzip test: "); + fflush(stdout); + testsRun++; + if (ELZMA_E_OK != (rc = roundTripTest(ELZMA_lzip))) + { + printf("fail (%d)!\n", rc); + } + else + { + testsPassed++; + printf("ok\n"); + } + + /* now run through the tests table */ + for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) + { + unsigned char *decompressed = NULL; + size_t sz = 0; + + printf("%s test: ", tests[i].testName); + rc = simpleDecompress(tests[i].format, tests[i].data, tests[i].dataSize, &decompressed, + &sz); + + testsRun++; + if (rc != tests[i].expectedCode) + { + printf("fail - got %d - expected %d\n", rc, tests[i].expectedCode); + } + else + { + testsPassed++; + printf("ok\n"); + free(decompressed); + } + } + + printf("\n%d/%d tests passed\n", testsPassed, testsRun); + + return (testsPassed == testsRun) ? 0 : 1; +} diff --git a/depends/lzma/elzma.c b/depends/lzma/elzma.c new file mode 100644 index 00000000..f715a7b2 --- /dev/null +++ b/depends/lzma/elzma.c @@ -0,0 +1,557 @@ +/* + * Written in 2009 by Lloyd Hilaiel + * + * License + * + * All the cruft you find here is public domain. You don't have to credit + * anyone to use this code, but my personal request is that you mention + * Igor Pavlov for his hard, high quality work. + * + * command line elzma tool for lzma compression + * + * At time of writing, the primary purpose of this tool is to test the + * easylzma library. + * + * TODO: + * - stdin/stdout support + * - multiple file support + * - much more + */ + +#include "include/compress.h" +#include "include/decompress.h" + +#include <stdio.h> +#include <string.h> +#include <assert.h> + +#ifdef WIN32 +#include <stdio.h> +#define unlink _unlink +#else +#include <unistd.h> +#endif + +int deleteFile(const char *path) +{ + return unlink(path); +} + +/* a utility to open a pair of files */ +/* XXX: respect overwrite flag */ +static int openFiles(const char *ifname, FILE **inFile, const char *ofname, FILE **outFile, + int overwrite) +{ + *inFile = fopen(ifname, "rb"); + if (*inFile == NULL) + { + fprintf(stderr, "couldn't open '%s' for reading\n", ifname); + return 1; + } + + *outFile = fopen(ofname, "wb"); + if (*outFile == NULL) + { + fprintf(stderr, "couldn't open '%s' for writing\n", ofname); + return 1; + } + + return 0; +} + +#define ELZMA_COMPRESS_USAGE \ + "Compress files using the LZMA algorithm (in place by default).\n" \ + "\n" \ + "Usage: elzma [options] [file]\n" \ + " -1 .. -9 compression level, -1 is fast, -9 is best (default 5)\n" \ + " -f, --force overwrite output files if they exist\n" \ + " -h, --help output this message and exit\n" \ + " -k, --keep don't delete input files\n" \ + " --lzip compress to lzip disk format (.lz extension)\n" \ + " --lzma compress to LZMA-Alone disk format (.lzma extension)\n" \ + " -v, --verbose output verbose status information while compressing\n" \ + " -z, --compress compress files (default when invoking elzma program)\n" \ + " -d, --decompress decompress files (default when invoking unelzma program)\n" \ + "\n" \ + "Advanced Options:\n" \ + " -s --set-max-dict (advanced) specify maximum dictionary size in bytes\n" + +/* parse arguments populating output parameters, return nonzero on failure */ +static int parseCompressArgs(int argc, char **argv, unsigned char *level, char **fname, + unsigned int *maxDictSize, unsigned int *verbose, + unsigned int *keep, unsigned int *overwrite, + elzma_file_format *format) +{ + int i; + + if (argc < 2) + return 1; + + for (i = 1; i < argc; i++) + { + if (argv[i][0] == '-') + { + char *val = NULL; + char *arg = &(argv[i][1]); + if (arg[0] == '-') + arg++; + + /* now see what argument this is */ + if (!strcmp(arg, "h") || !strcmp(arg, "help")) + { + return 1; + } + else if (!strcmp(arg, "s") || !strcmp(arg, "set-max-dict")) + { + unsigned int j = 0; + val = argv[++i]; + + /* validate argument is numeric */ + for (j = 0; j < strlen(val); j++) + { + if (val[j] < '0' || val[j] > '9') + return 1; + } + + *maxDictSize = strtoul(val, (char **)NULL, 10); + + /* don't allow dictionary sizes less than 8k */ + if (*maxDictSize < (1 < 13)) + *maxDictSize = 1 < 13; + else + { + /* make sure dict size is compatible with lzip, + * this will effectively collapse it to a close power + * of 2 */ + *maxDictSize = elzma_get_dict_size(*maxDictSize); + } + } + else if (!strcmp(arg, "v") || !strcmp(arg, "verbose")) + { + *verbose = 1; + } + else if (!strcmp(arg, "f") || !strcmp(arg, "force")) + { + *overwrite = 1; + } + else if (!strcmp(arg, "k") || !strcmp(arg, "keep")) + { + *keep = 1; + } + else if (strlen(arg) == 1 && arg[0] >= '1' && arg[0] <= '9') + { + *level = arg[0] - '0'; + } + else if (!strcmp(arg, "lzma")) + { + *format = ELZMA_lzma; + } + else if (!strcmp(arg, "lzip")) + { + *format = ELZMA_lzip; + } + else if (!strcmp(arg, "z") || !strcmp(arg, "d") || !strcmp(arg, "compress") || + !strcmp(arg, "decompress")) + { + /* noop */ + } + else + { + return 1; + } + } + else + { + *fname = argv[i]; + break; + } + } + + /* proper number of arguments? */ + if (i != argc - 1 || *fname == NULL) + return 1; + + return 0; +} + +/* callbacks for streamed input and output */ +static size_t elzmaWriteFunc(void *ctx, const void *buf, size_t size) +{ + size_t wt; + FILE *f = (FILE *)ctx; + assert(f != NULL); + + wt = fwrite(buf, 1, size, f); + + return wt; +} + +static int elzmaReadFunc(void *ctx, void *buf, size_t *size) +{ + FILE *f = (FILE *)ctx; + assert(f != NULL); + *size = fread(buf, 1, *size, f); + + return 0; +} + +static void printProgressHeader(void) +{ + printf("|0%% 50%% 100%%|\n"); +} + +static void endProgress(int pCtx) +{ + while (pCtx++ < 64) + { + printf("."); + } + printf("|\n"); +} + +static void elzmaProgressFunc(void *ctx, size_t complete, size_t total) +{ + int *dots = (int *)ctx; + int wantDots = (int)(64 * (double)complete / (double)total); + if (*dots == 0) + { + printf("|"); + (*dots)++; + } + while (wantDots > *dots) + { + printf("."); + (*dots)++; + } + fflush(stdout); +} + +static int doCompress(int argc, char **argv) +{ + /* default compression parameters, some of which may be overridded by + * command line arguments */ + unsigned char level = 5; + unsigned char lc = ELZMA_LC_DEFAULT; + unsigned char lp = ELZMA_LP_DEFAULT; + unsigned char pb = ELZMA_PB_DEFAULT; + unsigned int maxDictSize = ELZMA_DICT_SIZE_DEFAULT_MAX; + unsigned int dictSize = 0; + elzma_file_format format = ELZMA_lzma; + char *ext = ".lzma"; + char *ifname = NULL; + char *ofname = NULL; + unsigned int verbose = 0; + FILE *inFile = NULL; + FILE *outFile = NULL; + elzma_compress_handle hand = NULL; + /* XXX: large file support */ + unsigned int uncompressedSize = 0; + unsigned int keep = 0; + unsigned int overwrite = 0; + + if (0 != parseCompressArgs(argc, argv, &level, &ifname, &maxDictSize, &verbose, &keep, + &overwrite, &format)) + { + fprintf(stderr, ELZMA_COMPRESS_USAGE); + return 1; + } + + /* extension switching based on compression type*/ + if (format == ELZMA_lzip) + ext = ".lz"; + + /* generate output file name */ + { + ofname = malloc(strlen(ifname) + strlen(ext) + 1); + ofname[0] = 0; + strcat(ofname, ifname); + strcat(ofname, ext); + } + + /* now attempt to open input and ouput files */ + /* XXX: stdin/stdout support */ + if (0 != openFiles(ifname, &inFile, ofname, &outFile, overwrite)) + { + return 1; + } + + /* set uncompressed size */ + if (0 != fseek(inFile, 0, SEEK_END) || 0 == (uncompressedSize = ftell(inFile)) || + 0 != fseek(inFile, 0, SEEK_SET)) + { + fprintf(stderr, "error seeking input file (%s) - zero length?\n", ifname); + deleteFile(ofname); + return 1; + } + + /* determine a reasonable dictionary size given input size */ + dictSize = elzma_get_dict_size(uncompressedSize); + if (dictSize > maxDictSize) + dictSize = maxDictSize; + + if (verbose) + { + printf("compressing '%s' to '%s'\n", ifname, ofname); + printf("lc/lp/pb = %u/%u/%u | dictionary size = %u bytes\n", lc, lp, pb, dictSize); + printf("input file is %u bytes\n", uncompressedSize); + } + + /* allocate a compression handle */ + hand = elzma_compress_alloc(); + if (hand == NULL) + { + fprintf(stderr, "couldn't allocate compression object\n"); + deleteFile(ofname); + return 1; + } + + if (ELZMA_E_OK != + elzma_compress_config(hand, lc, lp, pb, level, dictSize, format, uncompressedSize)) + { + fprintf(stderr, "couldn't configure compression with " + "provided parameters\n"); + deleteFile(ofname); + return 1; + } + + { + int rv; + int pCtx = 0; + + if (verbose) + printProgressHeader(); + + rv = elzma_compress_run(hand, elzmaReadFunc, (void *)inFile, elzmaWriteFunc, + (void *)outFile, (verbose ? elzmaProgressFunc : NULL), &pCtx); + + if (verbose) + endProgress(pCtx); + + if (ELZMA_E_OK != rv) + { + fprintf(stderr, "error compressing\n"); + deleteFile(ofname); + return 1; + } + } + + /* clean up */ + elzma_compress_free(&hand); + fclose(inFile); + fclose(outFile); + free(ofname); + + if (!keep) + deleteFile(ifname); + + return 0; +} + +#define ELZMA_DECOMPRESS_USAGE \ + "Decompress files compressed using the LZMA algorithm (in place by default).\n" \ + "\n" \ + "Usage: unelzma [options] [file]\n" \ + " -f, --force overwrite output files if they exist\n" \ + " -h, --help output this message and exit\n" \ + " -k, --keep don't delete input files\n" \ + " -v, --verbose output verbose status information while decompressing\n" \ + " -z, --compress compress files (default when invoking elzma program)\n" \ + " -d, --decompress decompress files (default when invoking unelzma program)\n" \ + "\n" +/* parse arguments populating output parameters, return nonzero on failure */ +static int parseDecompressArgs(int argc, char **argv, char **fname, unsigned int *verbose, + unsigned int *keep, unsigned int *overwrite) +{ + int i; + + if (argc < 2) + return 1; + + for (i = 1; i < argc; i++) + { + if (argv[i][0] == '-') + { + char *arg = &(argv[i][1]); + if (arg[0] == '-') + arg++; + + /* now see what argument this is */ + if (!strcmp(arg, "h") || !strcmp(arg, "help")) + { + return 1; + } + else if (!strcmp(arg, "v") || !strcmp(arg, "verbose")) + { + *verbose = 1; + } + else if (!strcmp(arg, "k") || !strcmp(arg, "keep")) + { + *keep = 1; + } + else if (!strcmp(arg, "f") || !strcmp(arg, "force")) + { + *overwrite = 1; + } + else if (!strcmp(arg, "z") || !strcmp(arg, "d") || !strcmp(arg, "compress") || + !strcmp(arg, "decompress")) + { + /* noop */ + } + else + { + return 1; + } + } + else + { + *fname = argv[i]; + break; + } + } + + /* proper number of arguments? */ + if (i != argc - 1 || *fname == NULL) + return 1; + + return 0; +} |