diff options
Diffstat (limited to 'tcl8.6/compat/zlib/test/minigzip.c')
| -rw-r--r-- | tcl8.6/compat/zlib/test/minigzip.c | 651 |
1 files changed, 0 insertions, 651 deletions
diff --git a/tcl8.6/compat/zlib/test/minigzip.c b/tcl8.6/compat/zlib/test/minigzip.c deleted file mode 100644 index b3025a4..0000000 --- a/tcl8.6/compat/zlib/test/minigzip.c +++ /dev/null @@ -1,651 +0,0 @@ -/* minigzip.c -- simulate gzip using the zlib compression library - * Copyright (C) 1995-2006, 2010, 2011 Jean-loup Gailly. - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - * minigzip is a minimal implementation of the gzip utility. This is - * only an example of using zlib and isn't meant to replace the - * full-featured gzip. No attempt is made to deal with file systems - * limiting names to 14 or 8+3 characters, etc... Error checking is - * very limited. So use minigzip only for testing; use gzip for the - * real thing. On MSDOS, use only on file names without extension - * or in pipe mode. - */ - -/* @(#) $Id$ */ - -#include "zlib.h" -#include <stdio.h> - -#ifdef STDC -# include <string.h> -# include <stdlib.h> -#endif - -#ifdef USE_MMAP -# include <sys/types.h> -# include <sys/mman.h> -# include <sys/stat.h> -#endif - -#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__) -# include <fcntl.h> -# include <io.h> -# ifdef UNDER_CE -# include <stdlib.h> -# endif -# define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) -#else -# define SET_BINARY_MODE(file) -#endif - -#ifdef _MSC_VER -# define snprintf _snprintf -#endif - -#ifdef VMS -# define unlink delete -# define GZ_SUFFIX "-gz" -#endif -#ifdef RISCOS -# define unlink remove -# define GZ_SUFFIX "-gz" -# define fileno(file) file->__file -#endif -#if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os -# include <unix.h> /* for fileno */ -#endif - -#if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE) -#ifndef WIN32 /* unlink already in stdio.h for WIN32 */ - extern int unlink OF((const char *)); -#endif -#endif - -#if defined(UNDER_CE) -# include <windows.h> -# define perror(s) pwinerror(s) - -/* Map the Windows error number in ERROR to a locale-dependent error - message string and return a pointer to it. Typically, the values - for ERROR come from GetLastError. - - The string pointed to shall not be modified by the application, - but may be overwritten by a subsequent call to strwinerror - - The strwinerror function does not change the current setting - of GetLastError. */ - -static char *strwinerror (error) - DWORD error; -{ - static char buf[1024]; - - wchar_t *msgbuf; - DWORD lasterr = GetLastError(); - DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM - | FORMAT_MESSAGE_ALLOCATE_BUFFER, - NULL, - error, - 0, /* Default language */ - (LPVOID)&msgbuf, - 0, - NULL); - if (chars != 0) { - /* If there is an \r\n appended, zap it. */ - if (chars >= 2 - && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') { - chars -= 2; - msgbuf[chars] = 0; - } - - if (chars > sizeof (buf) - 1) { - chars = sizeof (buf) - 1; - msgbuf[chars] = 0; - } - - wcstombs(buf, msgbuf, chars + 1); - LocalFree(msgbuf); - } - else { - sprintf(buf, "unknown win32 error (%ld)", error); - } - - SetLastError(lasterr); - return buf; -} - -static void pwinerror (s) - const char *s; -{ - if (s && *s) - fprintf(stderr, "%s: %s\n", s, strwinerror(GetLastError ())); - else - fprintf(stderr, "%s\n", strwinerror(GetLastError ())); -} - -#endif /* UNDER_CE */ - -#ifndef GZ_SUFFIX -# define GZ_SUFFIX ".gz" -#endif -#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1) - -#define BUFLEN 16384 -#define MAX_NAME_LEN 1024 - -#ifdef MAXSEG_64K -# define local static - /* Needed for systems with limitation on stack size. */ -#else -# define local -#endif - -#ifdef Z_SOLO -/* for Z_SOLO, create simplified gz* functions using deflate and inflate */ - -#if defined(Z_HAVE_UNISTD_H) || defined(Z_LARGE) -# include <unistd.h> /* for unlink() */ -#endif - -void *myalloc OF((void *, unsigned, unsigned)); -void myfree OF((void *, void *)); - -void *myalloc(q, n, m) - void *q; - unsigned n, m; -{ - q = Z_NULL; - return calloc(n, m); -} - -void myfree(q, p) - void *q, *p; -{ - q = Z_NULL; - free(p); -} - -typedef struct gzFile_s { - FILE *file; - int write; - int err; - char *msg; - z_stream strm; -} *gzFile; - -gzFile gzopen OF((const char *, const char *)); -gzFile gzdopen OF((int, const char *)); -gzFile gz_open OF((const char *, int, const char *)); - -gzFile gzopen(path, mode) -const char *path; -const char *mode; -{ - return gz_open(path, -1, mode); -} - -gzFile gzdopen(fd, mode) -int fd; -const char *mode; -{ - return gz_open(NULL, fd, mode); -} - -gzFile gz_open(path, fd, mode) - const char *path; - int fd; - const char *mode; -{ - gzFile gz; - int ret; - - gz = malloc(sizeof(struct gzFile_s)); - if (gz == NULL) - return NULL; - gz->write = strchr(mode, 'w') != NULL; - gz->strm.zalloc = myalloc; - gz->strm.zfree = myfree; - gz->strm.opaque = Z_NULL; - if (gz->write) - ret = deflateInit2(&(gz->strm), -1, 8, 15 + 16, 8, 0); - else { - gz->strm.next_in = 0; - gz->strm.avail_in = Z_NULL; - ret = inflateInit2(&(gz->strm), 15 + 16); - } - if (ret != Z_OK) { - free(gz); - return NULL; - } - gz->file = path == NULL ? fdopen(fd, gz->write ? "wb" : "rb") : - fopen(path, gz->write ? "wb" : "rb"); - if (gz->file == NULL) { - gz->write ? deflateEnd(&(gz->strm)) : inflateEnd(&(gz->strm)); - free(gz); - return NULL; - } - gz->err = 0; - gz->msg = ""; - return gz; -} - -int gzwrite OF((gzFile, const void *, unsigned)); - -int gzwrite(gz, buf, len) - gzFile gz; - const void *buf; - unsigned len; -{ - z_stream *strm; - unsigned char out[BUFLEN]; - - if (gz == NULL || !gz->write) - return 0; - strm = &(gz->strm); - strm->next_in = (void *)buf; - strm->avail_in = len; - do { - strm->next_out = out; - strm->avail_out = BUFLEN; - (void)deflate(strm, Z_NO_FLUSH); - fwrite(out, 1, BUFLEN - strm->avail_out, gz->file); - } while (strm->avail_out == 0); - return len; -} - -int gzread OF((gzFile, void *, unsigned)); - -int gzread(gz, buf, len) - gzFile gz; - void *buf; - unsigned len; -{ - int ret; - unsigned got; - unsigned char in[1]; - z_stream *strm; - - if (gz == NULL || gz->write) - return 0; - if (gz->err) - return 0; - strm = &(gz->strm); - strm->next_out = (void *)buf; - strm->avail_out = len; - do { - got = fread(in, 1, 1, gz->file); - if (got == 0) - break; - strm->next_in = in; - strm->avail_in = 1; - ret = inflate(strm, Z_NO_FLUSH); - if (ret == Z_DATA_ERROR) { - gz->err = Z_DATA_ERROR; - gz->msg = strm->msg; - return 0; - } - if (ret == Z_STREAM_END) - inflateReset(strm); - } while (strm->avail_out); - return len - strm->avail_out; -} - -int gzclose OF((gzFile)); - -int gzclose(gz) - gzFile gz; -{ - z_stream *strm; - unsigned char out[BUFLEN]; - - if (gz == NULL) - return Z_STREAM_ERROR; - strm = &(gz->strm); - if (gz->write) { - strm->next_in = Z_NULL; - strm->avail_in = 0; - do { - strm->next_out = out; - strm->avail_out = BUFLEN; - (void)deflate(strm, Z_FINISH); - fwrite(out, 1, BUFLEN - strm->avail_out, gz->file); - } while (strm->avail_out == 0); - deflateEnd(strm); - } - else - inflateEnd(strm); - fclose(gz->file); - free(gz); - return Z_OK; -} - -const char *gzerror OF((gzFile, int *)); - -const char *gzerror(gz, err) - gzFile gz; - int *err; -{ - *err = gz->err; - return gz->msg; -} - -#endif - -char *prog; - -void error OF((const char *msg)); -void gz_compress OF((FILE *in, gzFile out)); -#ifdef USE_MMAP -int gz_compress_mmap OF((FILE *in, gzFile out)); -#endif -void gz_uncompress OF((gzFile in, FILE *out)); -void file_compress OF((char *file, char *mode)); -void file_uncompress OF((char *file)); -int main OF((int argc, char *argv[])); - -/* =========================================================================== - * Display error message and exit - */ -void error(msg) - const char *msg; -{ - fprintf(stderr, "%s: %s\n", prog, msg); - exit(1); -} - -/* =========================================================================== - * Compress input to output then close both files. - */ - -void gz_compress(in, out) - FILE *in; - gzFile out; -{ - local char buf[BUFLEN]; - int len; - int err; - -#ifdef USE_MMAP - /* Try first compressing with mmap. If mmap fails (minigzip used in a - * pipe), use the normal fread loop. - */ - if (gz_compress_mmap(in, out) == Z_OK) return; -#endif - for (;;) { - len = (int)fread(buf, 1, sizeof(buf), in); - if (ferror(in)) { - perror("fread"); - exit(1); - } - if (len == 0) break; - - if (gzwrite(out, buf, (unsigned)len) != len) error(gzerror(out, &err)); - } - fclose(in); - if (gzclose(out) != Z_OK) error("failed gzclose"); -} - -#ifdef USE_MMAP /* MMAP version, Miguel Albrecht <malbrech@eso.org> */ - -/* Try compressing the input file at once using mmap. Return Z_OK if - * if success, Z_ERRNO otherwise. - */ -int gz_compress_mmap(in, out) - FILE *in; - gzFile out; -{ - int len; - int err; - int ifd = fileno(in); - caddr_t buf; /* mmap'ed buffer for the entire input file */ - off_t buf_len; /* length of the input file */ - struct stat sb; - - /* Determine the size of the file, needed for mmap: */ - if (fstat(ifd, &sb) < 0) return Z_ERRNO; - buf_len = sb.st_size; - if (buf_len <= 0) return Z_ERRNO; - - /* Now do the actual mmap: */ - buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0); - if (buf == (caddr_t)(-1)) return Z_ERRNO; - - /* Compress the whole file at once: */ - len = gzwrite(out, (char *)buf, (unsigned)buf_len); - - if (len != (int)buf_len) error(gzerror(out, &err)); - - munmap(buf, buf_len); - fclose(in); - if (gzclose(out) != Z_OK) error("failed gzclose"); - return Z_OK; -} -#endif /* USE_MMAP */ - -/* =========================================================================== - * Uncompress input to output then close both files. - */ -void gz_uncompress(in, out) - gzFile in; - FILE *out; -{ - local char buf[BUFLEN]; - int len; - int err; - - for (;;) { - len = gzread(in, buf, sizeof(buf)); - if (len < 0) error (gzerror(in, &err)); - if (len == 0) break; - - if ((int)fwrite(buf, 1, (unsigned)len, out) != len) { - error("failed fwrite"); - } - } - if (fclose(out)) error("failed fclose"); - - if (gzclose(in) != Z_OK) error("failed gzclose"); -} - - -/* =========================================================================== - * Compress the given file: create a corresponding .gz file and remove the - * original. - */ -void file_compress(file, mode) - char *file; - char *mode; -{ - local char outfile[MAX_NAME_LEN]; - FILE *in; - gzFile out; - - if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) { - fprintf(stderr, "%s: filename too long\n", prog); - exit(1); - } - -#if !defined(NO_snprintf) && !defined(NO_vsnprintf) - snprintf(outfile, sizeof(outfile), "%s%s", file, GZ_SUFFIX); -#else - strcpy(outfile, file); - strcat(outfile, GZ_SUFFIX); -#endif - - in = fopen(file, "rb"); - if (in == NULL) { - perror(file); - exit(1); - } - out = gzopen(outfile, mode); - if (out == NULL) { - fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile); - exit(1); - } - gz_compress(in, out); - - unlink(file); -} - - -/* =========================================================================== - * Uncompress the given file and remove the original. - */ -void file_uncompress(file) - char *file; -{ - local char buf[MAX_NAME_LEN]; - char *infile, *outfile; - FILE *out; - gzFile in; - size_t len = strlen(file); - - if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) { - fprintf(stderr, "%s: filename too long\n", prog); - exit(1); - } - -#if !defined(NO_snprintf) && !defined(NO_vsnprintf) - snprintf(buf, sizeof(buf), "%s", file); -#else - strcpy(buf, file); -#endif - - if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) { - infile = file; - outfile = buf; - outfile[len-3] = '\0'; - } else { - outfile = file; - infile = buf; -#if !defined(NO_snprintf) && !defined(NO_vsnprintf) - snprintf(buf + len, sizeof(buf) - len, "%s", GZ_SUFFIX); -#else - strcat(infile, GZ_SUFFIX); -#endif - } - in = gzopen(infile, "rb"); - if (in == NULL) { - fprintf(stderr, "%s: can't gzopen %s\n", prog, infile); - exit(1); - } - out = fopen(outfile, "wb"); - if (out == NULL) { - perror(file); - exit(1); - } - - gz_uncompress(in, out); - - unlink(infile); -} - - -/* =========================================================================== - * Usage: minigzip [-c] [-d] [-f] [-h] [-r] [-1 to -9] [files...] - * -c : write to standard output - * -d : decompress - * -f : compress with Z_FILTERED - * -h : compress with Z_HUFFMAN_ONLY - * -r : compress with Z_RLE - * -1 to -9 : compression level - */ - -int main(argc, argv) - int argc; - char *argv[]; -{ - int copyout = 0; - int uncompr = 0; - gzFile file; - char *bname, outmode[20]; - -#if !defined(NO_snprintf) && !defined(NO_vsnprintf) - snprintf(outmode, sizeof(outmode), "%s", "wb6 "); -#else - strcpy(outmode, "wb6 "); -#endif - - prog = argv[0]; - bname = strrchr(argv[0], '/'); - if (bname) - bname++; - else - bname = argv[0]; - argc--, argv++; - - if (!strcmp(bname, "gunzip")) - uncompr = 1; - else if (!strcmp(bname, "zcat")) - copyout = uncompr = 1; - - while (argc > 0) { - if (strcmp(*argv, "-c") == 0) - copyout = 1; - else if (strcmp(*argv, "-d") == 0) - uncompr = 1; - else if (strcmp(*argv, "-f") == 0) - outmode[3] = 'f'; - else if (strcmp(*argv, "-h") == 0) - outmode[3] = 'h'; - else if (strcmp(*argv, "-r") == 0) - outmode[3] = 'R'; - else if ((*argv)[0] == '-' && (*argv)[1] >= '1' && (*argv)[1] <= '9' && - (*argv)[2] == 0) - outmode[2] = (*argv)[1]; - else - break; - argc--, argv++; - } - if (outmode[3] == ' ') - outmode[3] = 0; - if (argc == 0) { - SET_BINARY_MODE(stdin); - SET_BINARY_MODE(stdout); - if (uncompr) { - file = gzdopen(fileno(stdin), "rb"); - if (file == NULL) error("can't gzdopen stdin"); - gz_uncompress(file, stdout); - } else { - file = gzdopen(fileno(stdout), outmode); - if (file == NULL) error("can't gzdopen stdout"); - gz_compress(stdin, file); - } - } else { - if (copyout) { - SET_BINARY_MODE(stdout); - } - do { - if (uncompr) { - if (copyout) { - file = gzopen(*argv, "rb"); - if (file == NULL) - fprintf(stderr, "%s: can't gzopen %s\n", prog, *argv); - else - gz_uncompress(file, stdout); - } else { - file_uncompress(*argv); - } - } else { - if (copyout) { - FILE * in = fopen(*argv, "rb"); - - if (in == NULL) { - perror(*argv); - } else { - file = gzdopen(fileno(stdout), outmode); - if (file == NULL) error("can't gzdopen stdout"); - - gz_compress(in, file); - } - - } else { - file_compress(*argv, outmode); - } - } - } while (argv++, --argc); - } - return 0; -} |