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authorBrad King <brad.king@kitware.com>2019-02-27 13:19:45 (GMT)
committerKitware Robot <kwrobot@kitware.com>2019-02-27 13:20:03 (GMT)
commit23bcac5d582b55f15a892b0e39f67e2d3e5057b0 (patch)
tree69bd4a1c24c39c0f37e56a2091621f9eb87fda6e /Utilities
parentc3ce9cfe153cc2af510ee0ecdd05d7e55abfcbdb (diff)
parentb5a69c62793b0b77f56a12c07946a691469ca3f6 (diff)
downloadCMake-23bcac5d582b55f15a892b0e39f67e2d3e5057b0.zip
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Merge topic 'ctest-clean-compress'
b5a69c6279 cmcompress: Delete unused 3rdParty module Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !3019
Diffstat (limited to 'Utilities')
-rw-r--r--Utilities/cmcompress/CMakeLists.txt5
-rw-r--r--Utilities/cmcompress/Copyright.txt34
-rw-r--r--Utilities/cmcompress/cmcompress.c551
-rw-r--r--Utilities/cmcompress/cmcompress.h195
-rw-r--r--Utilities/cmcompress/compress.c.original1308
5 files changed, 0 insertions, 2093 deletions
diff --git a/Utilities/cmcompress/CMakeLists.txt b/Utilities/cmcompress/CMakeLists.txt
deleted file mode 100644
index 8063573..0000000
--- a/Utilities/cmcompress/CMakeLists.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-PROJECT(CMCompress)
-
-ADD_LIBRARY(cmcompress cmcompress.c)
-
-INSTALL(FILES Copyright.txt DESTINATION ${CMAKE_DOC_DIR}/cmcompress)
diff --git a/Utilities/cmcompress/Copyright.txt b/Utilities/cmcompress/Copyright.txt
deleted file mode 100644
index 162332f..0000000
--- a/Utilities/cmcompress/Copyright.txt
+++ /dev/null
@@ -1,34 +0,0 @@
-Copyright (c) 1985, 1986 The Regents of the University of California.
-All rights reserved.
-
-This code is derived from software contributed to Berkeley by
-James A. Woods, derived from original work by Spencer Thomas
-and Joseph Orost.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
-2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
-3. All advertising materials mentioning features or use of this software
- must display the following acknowledgement:
- This product includes software developed by the University of
- California, Berkeley and its contributors.
-4. Neither the name of the University nor the names of its contributors
- may be used to endorse or promote products derived from this software
- without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGE.
diff --git a/Utilities/cmcompress/cmcompress.c b/Utilities/cmcompress/cmcompress.c
deleted file mode 100644
index ea845ed..0000000
--- a/Utilities/cmcompress/cmcompress.c
+++ /dev/null
@@ -1,551 +0,0 @@
-/*
- * Copyright (c) 1985, 1986 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * James A. Woods, derived from original work by Spencer Thomas
- * and Joseph Orost.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include "cmcompress.h"
-
-#include <errno.h>
-#include <string.h>
-
-static const char_type magic_header[] = { "\037\235" }; /* 1F 9D */
-
-/* Defines for third byte of header */
-#define BIT_MASK 0x1f
-#define BLOCK_MASK 0x80
-#define CHECK_GAP 10000 /* ratio check interval */
-/* Masks 0x40 and 0x20 are free. I think 0x20 should mean that there is
- a fourth header byte (for expansion).
- */
-#define INIT_BITS 9 /* initial number of bits/code */
-
-#ifdef COMPATIBLE /* But wrong! */
-# define MAXCODE(n_bits) (1 << (n_bits) - 1)
-#else
-# define MAXCODE(n_bits) ((1 << (n_bits)) - 1)
-#endif /* COMPATIBLE */
-
-#define htabof(i) cdata->htab[i]
-#define codetabof(i) cdata->codetab[i]
-
-/*
- * the next two codes should not be changed lightly, as they must not
- * lie within the contiguous general code space.
- */
-#define FIRST 257 /* first free entry */
-#define CLEAR 256 /* table clear output code */
-
-#ifdef DEBUG
-static void prratio( FILE *stream, long int num, long int den);
-#endif
-
-int cmcompress_compress_initialize(struct cmcompress_stream* cdata)
-{
- cdata->maxbits = BITS; /* user settable max # bits/code */
- cdata->maxmaxcode = 1 << BITS; /* should NEVER generate this code */
- cdata->hsize = HSIZE; /* for dynamic table sizing */
- cdata->free_ent = 0; /* first unused entry */
- cdata->nomagic = 0; /* Use a 3-byte magic number header, unless old file */
- cdata->block_compress = BLOCK_MASK;
- cdata->clear_flg = 0;
- cdata->ratio = 0;
- cdata->checkpoint = CHECK_GAP;
-
- cdata->input_stream = 0;
- cdata->output_stream = 0;
- cdata->client_data = 0;
- return 1;
-}
-
-static void cl_hash(struct cmcompress_stream* cdata, count_int hsize) /* reset code table */
-{
- register count_int *htab_p = cdata->htab+hsize;
- register long i;
- register long m1 = -1;
-
- i = hsize - 16;
- do
- { /* might use Sys V memset(3) here */
- *(htab_p-16) = m1;
- *(htab_p-15) = m1;
- *(htab_p-14) = m1;
- *(htab_p-13) = m1;
- *(htab_p-12) = m1;
- *(htab_p-11) = m1;
- *(htab_p-10) = m1;
- *(htab_p-9) = m1;
- *(htab_p-8) = m1;
- *(htab_p-7) = m1;
- *(htab_p-6) = m1;
- *(htab_p-5) = m1;
- *(htab_p-4) = m1;
- *(htab_p-3) = m1;
- *(htab_p-2) = m1;
- *(htab_p-1) = m1;
- htab_p -= 16;
- }
- while ((i -= 16) >= 0);
- for ( i += 16; i > 0; i-- )
- {
- *--htab_p = m1;
- }
-}
-
-/*-
- * Output the given code.
- * Inputs:
- * code: A n_bits-bit integer. If == -1, then EOF. This assumes
- * that n_bits =< (long)wordsize - 1.
- * Outputs:
- * Outputs code to the file.
- * Assumptions:
- * Chars are 8 bits long.
- * Algorithm:
- * Maintain a BITS character long buffer (so that 8 codes will
- * fit in it exactly). Use the VAX insv instruction to insert each
- * code in turn. When the buffer fills up empty it and start over.
- */
-
-static char buf[BITS];
-
-#ifndef vax
-char_type lmask[9] = {0xff, 0xfe, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0x80, 0x00};
-char_type rmask[9] = {0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff};
-#endif /* vax */
-
-static int output(struct cmcompress_stream* cdata, code_int code)
-{
-#ifdef DEBUG
- static int col = 0;
-#endif /* DEBUG */
-
- /*
- * On the VAX, it is important to have the register declarations
- * in exactly the order given, or the asm will break.
- */
- register int r_off = cdata->offset, bits= cdata->n_bits;
- register char * bp = buf;
-
-#ifdef DEBUG
- if ( verbose )
- {
- fprintf( stderr, "%5d%c", code,
- (col+=6) >= 74 ? (col = 0, '\n') : ' ' );
- }
-#endif /* DEBUG */
- if ( code >= 0 )
- {
-#if defined(vax) && !defined(__GNUC__)
- /*
- * VAX and PCC DEPENDENT!! Implementation on other machines is
- * below.
- *
- * Translation: Insert BITS bits from the argument starting at
- * cdata->offset bits from the beginning of buf.
- */
- 0; /* Work around for pcc -O bug with asm and if stmt */
- asm( "insv 4(ap),r11,r10,(r9)" );
-#else
- /*
- * byte/bit numbering on the VAX is simulated by the following code
- */
- /*
- * Get to the first byte.
- */
- bp += (r_off >> 3);
- r_off &= 7;
- /*
- * Since code is always >= 8 bits, only need to mask the first
- * hunk on the left.
- */
- *bp = (char)((*bp & rmask[r_off]) | ((code << r_off) & lmask[r_off]));
- bp++;
- bits -= (8 - r_off);
- code >>= 8 - r_off;
- /* Get any 8 bit parts in the middle (<=1 for up to 16 bits). */
- if ( bits >= 8 )
- {
- *bp++ = (char)(code);
- code >>= 8;
- bits -= 8;
- }
- /* Last bits. */
- if(bits)
- {
- *bp = (char)(code);
- }
-#endif /* vax */
- cdata->offset += cdata->n_bits;
- if ( cdata->offset == (cdata->n_bits << 3) )
- {
- bp = buf;
- bits = cdata->n_bits;
- cdata->bytes_out += bits;
- do
- {
- if ( cdata->output_stream(cdata, bp, 1) != 1 )
- {
- return 0;
- }
- bp++;
- }
- while(--bits);
- cdata->offset = 0;
- }
-
- /*
- * If the next entry is going to be too big for the code size,
- * then increase it, if possible.
- */
- if ( cdata->free_ent > cdata->maxcode || (cdata->clear_flg > 0))
- {
- /*
- * Write the whole buffer, because the input side won't
- * discover the size increase until after it has read it.
- */
- if ( cdata->offset > 0 )
- {
- if ( cdata->output_stream(cdata, buf, cdata->n_bits) != cdata->n_bits )
- {
- return 0;
- }
- cdata->bytes_out += cdata->n_bits;
- }
- cdata->offset = 0;
-
- if ( cdata->clear_flg )
- {
- cdata->maxcode = MAXCODE (cdata->n_bits = INIT_BITS);
- cdata->clear_flg = 0;
- }
- else
- {
- cdata->n_bits++;
- if ( cdata->n_bits == cdata->maxbits )
- {
- cdata->maxcode = cdata->maxmaxcode;
- }
- else
- {
- cdata->maxcode = MAXCODE(cdata->n_bits);
- }
- }
-#ifdef DEBUG
- if ( debug )
- {
- fprintf( stderr, "\nChange to %d bits\n", cdata->n_bits );
- col = 0;
- }
-#endif /* DEBUG */
- }
- }
- else
- {
- /*
- * At EOF, write the rest of the buffer.
- */
- if ( cdata->offset > 0 )
- {
- cdata->offset = (cdata->offset + 7) / 8;
- if ( cdata->output_stream(cdata, buf, cdata->offset ) != cdata->offset )
- {
- return 0;
- }
- cdata->bytes_out += cdata->offset;
- }
- cdata->offset = 0;
- (void)fflush( stdout );
- if( ferror( stdout ) )
- {
- return 0;
- }
-#ifdef DEBUG
- if ( verbose )
- {
- fprintf( stderr, "\n" );
- }
-#endif
- }
- return 1;
-}
-
-/*
- * compress stdin to stdout
- *
- * Algorithm: use open addressing double hashing (no chaining) on the
- * prefix code / next character combination. We do a variant of Knuth's
- * algorithm D (vol. 3, sec. 6.4) along with G. Knott's relatively-prime
- * secondary probe. Here, the modular division first probe is gives way
- * to a faster exclusive-or manipulation. Also do block compression with
- * an adaptive reset, whereby the code table is cleared when the compression
- * ratio decreases, but after the table fills. The variable-length output
- * codes are re-sized at this point, and a special CLEAR code is generated
- * for the decompressor. Late addition: construct the table according to
- * file size for noticeable speed improvement on small files. Please direct
- * questions about this implementation to ames!jaw.
- */
-
-int cmcompress_compress_start(struct cmcompress_stream* cdata)
-{
-#ifndef COMPATIBLE
- if (cdata->nomagic == 0)
- {
- char headLast = (char)(cdata->maxbits | cdata->block_compress);
- cdata->output_stream(cdata, (const char*)magic_header, 2);
- cdata->output_stream(cdata, &headLast, 1);
- if(ferror(stdout))
- {
- printf("Error...\n");
- }
- }
-#endif /* COMPATIBLE */
-
- cdata->offset = 0;
- cdata->bytes_out = 3; /* includes 3-byte header mojo */
- cdata->out_count = 0;
- cdata->clear_flg = 0;
- cdata->ratio = 0;
- cdata->in_count = 1;
- cdata->checkpoint = CHECK_GAP;
- cdata->maxcode = MAXCODE(cdata->n_bits = INIT_BITS);
- cdata->free_ent = ((cdata->block_compress) ? FIRST : 256 );
-
- cdata->first_pass = 1;
-
- cdata->hshift = 0;
- for ( cdata->fcode = (long) cdata->hsize; cdata->fcode < 65536L; cdata->fcode *= 2L )
- {
- cdata->hshift++;
- }
- cdata->hshift = 8 - cdata->hshift; /* set hash code range bound */
-
- cdata->hsize_reg = cdata->hsize;
- cl_hash(cdata, (count_int) cdata->hsize_reg); /* clear hash table */
-
- return 1;
-}
-
-static int cl_block (struct cmcompress_stream* cdata) /* table clear for block compress */
-{
- register long int rat;
-
- cdata->checkpoint = cdata->in_count + CHECK_GAP;
-#ifdef DEBUG
- if ( cdata->debug )
- {
- fprintf ( stderr, "count: %ld, ratio: ", cdata->in_count );
- prratio ( stderr, cdata->in_count, cdata->bytes_out );
- fprintf ( stderr, "\n");
- }
-#endif /* DEBUG */
-
- if(cdata->in_count > 0x007fffff)
- { /* shift will overflow */
- rat = cdata->bytes_out >> 8;
- if(rat == 0)
- { /* Don't divide by zero */
- rat = 0x7fffffff;
- }
- else
- {
- rat = cdata->in_count / rat;
- }
- }
- else
- {
- rat = (cdata->in_count << 8) / cdata->bytes_out; /* 8 fractional bits */
- }
- if ( rat > cdata->ratio )
- {
- cdata->ratio = rat;
- }
- else
- {
- cdata->ratio = 0;
-#ifdef DEBUG
- if(cdata->verbose)
- {
- dump_tab(); /* dump string table */
- }
-#endif
- cl_hash (cdata, (count_int) cdata->hsize );
- cdata->free_ent = FIRST;
- cdata->clear_flg = 1;
- if ( !output (cdata, (code_int) CLEAR ) )
- {
- return 0;
- }
-#ifdef DEBUG
- if(cdata->debug)
- {
- fprintf ( stderr, "clear\n" );
- }
-#endif /* DEBUG */
- }
- return 1;
-}
-
-
-int cmcompress_compress(struct cmcompress_stream* cdata, void* buff, size_t n)
-{
- register code_int i;
- register int c;
- register int disp;
-
- unsigned char* input_buffer = (unsigned char*)buff;
-
- size_t cc;
-
- /*printf("cmcompress_compress(%p, %p, %d)\n", cdata, buff, n);*/
-
- if ( cdata->first_pass )
- {
- cdata->ent = input_buffer[0];
- ++ input_buffer;
- -- n;
- cdata->first_pass = 0;
- }
-
- for ( cc = 0; cc < n; ++ cc )
- {
- c = input_buffer[cc];
- cdata->in_count++;
- cdata->fcode = (long) (((long) c << cdata->maxbits) + cdata->ent);
- i = ((c << cdata->hshift) ^ cdata->ent); /* xor hashing */
-
- if ( htabof (i) == cdata->fcode )
- {
- cdata->ent = codetabof (i);
- continue;
- }
- else if ( (long)htabof (i) < 0 ) /* empty slot */
- {
- goto nomatch;
- }
- disp = (int)(cdata->hsize_reg - i); /* secondary hash (after G. Knott) */
- if ( i == 0 )
- {
- disp = 1;
- }
-probe:
- if ( (i -= disp) < 0 )
- {
- i += cdata->hsize_reg;
- }
-
- if ( htabof (i) == cdata->fcode )
- {
- cdata->ent = codetabof (i);
- continue;
- }
- if ( (long)htabof (i) > 0 )
- {
- goto probe;
- }
-nomatch:
- if ( !output(cdata, (code_int) cdata->ent ) )
- {
- return 0;
- }
- cdata->out_count++;
- cdata->ent = c;
- if (
-#ifdef SIGNED_COMPARE_SLOW
- (unsigned) cdata->free_ent < (unsigned) cdata->maxmaxcode
-#else
- cdata->free_ent < cdata->maxmaxcode
-#endif
- )
- {
- codetabof (i) = (unsigned short)(cdata->free_ent++); /* code -> hashtable */
- htabof (i) = cdata->fcode;
- }
- else if ( (count_int)cdata->in_count >= cdata->checkpoint && cdata->block_compress )
- {
- if ( !cl_block (cdata) )
- {
- return 0;
- }
- }
- }
-
- return 1;
-}
-
-int cmcompress_compress_finalize(struct cmcompress_stream* cdata)
-{
- /*
- * Put out the final code.
- */
- if ( !output(cdata, (code_int)cdata->ent ) )
- {
- return 0;
- }
- cdata->out_count++;
- if ( !output(cdata, (code_int)-1 ) )
- {
- return 0;
- }
-
- if(cdata->bytes_out > cdata->in_count) /* exit(2) if no savings */
- {
- return 0;
- }
- return 1;
-}
-
-
-#if defined(DEBUG)
-static void prratio(FILE *stream, long int num, long int den)
-{
- register int q; /* Doesn't need to be long */
-
- if(num > 214748L)
- { /* 2147483647/10000 */
- q = num / (den / 10000L);
- }
- else
- {
- q = 10000L * num / den; /* Long calculations, though */
- }
- if (q < 0)
- {
- putc('-', stream);
- q = -q;
- }
- fprintf(stream, "%d.%02d%%", q / 100, q % 100);
-}
-#endif
-
diff --git a/Utilities/cmcompress/cmcompress.h b/Utilities/cmcompress/cmcompress.h
deleted file mode 100644
index 4cd3a1c..0000000
--- a/Utilities/cmcompress/cmcompress.h
+++ /dev/null
@@ -1,195 +0,0 @@
-/*
- * Copyright (c) 1985, 1986 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * James A. Woods, derived from original work by Spencer Thomas
- * and Joseph Orost.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef cmcompress__h_
-#define cmcompress__h_
-
-#include <stdio.h>
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
- /*
- * Set USERMEM to the maximum amount of physical user memory available
- * in bytes. USERMEM is used to determine the maximum BITS that can be used
- * for compression.
- *
- * SACREDMEM is the amount of physical memory saved for others; compress
- * will hog the rest.
- */
-#ifndef SACREDMEM
-#define SACREDMEM 0
-#endif
-
-#ifndef USERMEM
-# define USERMEM 450000 /* default user memory */
-#endif
-
-#ifdef pdp11
-# define BITS 12 /* max bits/code for 16-bit machine */
-# define NO_UCHAR /* also if "unsigned char" functions as signed char */
-# undef USERMEM
-#endif /* pdp11 */ /* don't forget to compile with -i */
-
-#ifdef USERMEM
-# if USERMEM >= (433484+SACREDMEM)
-# define PBITS 16
-# else
-# if USERMEM >= (229600+SACREDMEM)
-# define PBITS 15
-# else
-# if USERMEM >= (127536+SACREDMEM)
-# define PBITS 14
-# else
-# if USERMEM >= (73464+SACREDMEM)
-# define PBITS 13
-# else
-# define PBITS 12
-# endif
-# endif
-# endif
-# endif
-# undef USERMEM
-#endif /* USERMEM */
-
-#ifdef PBITS /* Preferred BITS for this memory size */
-# ifndef BITS
-# define BITS PBITS
-# endif /* BITS */
-#endif /* PBITS */
-
-#if BITS == 16
-# define HSIZE 69001 /* 95% occupancy */
-#endif
-#if BITS == 15
-# define HSIZE 35023 /* 94% occupancy */
-#endif
-#if BITS == 14
-# define HSIZE 18013 /* 91% occupancy */
-#endif
-#if BITS == 13
-# define HSIZE 9001 /* 91% occupancy */
-#endif
-#if BITS <= 12
-# define HSIZE 5003 /* 80% occupancy */
-#endif
-
- /*
- * a code_int must be able to hold 2**BITS values of type int, and also -1
- */
-#if BITS > 15
- typedef long int code_int;
-#else
- typedef int code_int;
-#endif
-
-#ifdef SIGNED_COMPARE_SLOW
- typedef unsigned long int count_int;
- typedef unsigned short int count_short;
-#else
- typedef long int count_int;
-#endif
-
-#ifdef NO_UCHAR
- typedef char char_type;
-#else
- typedef unsigned char char_type;
-#endif /* UCHAR */
-
-
-
- struct cmcompress_stream
- {
- int n_bits; /* number of bits/code */
- int maxbits; /* user settable max # bits/code */
- code_int maxcode; /* maximum code, given n_bits */
- code_int maxmaxcode; /* should NEVER generate this code */
-
- count_int htab [HSIZE];
- unsigned short codetab [HSIZE];
-
- code_int hsize; /* for dynamic table sizing */
- code_int free_ent; /* first unused entry */
- int nomagic; /* Use a 3-byte magic number header, unless old file */
-
- /*
- * block compression parameters -- after all codes are used up,
- * and compression rate changes, start over.
- */
- int block_compress;
- int clear_flg;
- long int ratio;
- count_int checkpoint;
-
-#ifdef DEBUG
- int debug;
- int verbose;
-#endif
-
- /* compress internals */
- int offset;
- long int in_count; /* length of input */
- long int bytes_out; /* length of compressed output */
- long int out_count; /* # of codes output (for debugging) */
-
- /* internals */
- code_int ent;
- code_int hsize_reg;
- int hshift;
-
- long fcode;
- int first_pass;
-
- /* For input and output */
- int (*input_stream)(void*);
- int (*output_stream)(void*, const char*,int);
- void* client_data;
- };
-
- int cmcompress_compress_initialize(struct cmcompress_stream* cdata);
- int cmcompress_compress_start(struct cmcompress_stream* cdata);
- int cmcompress_compress(struct cmcompress_stream* cdata, void* buff, size_t n);
- int cmcompress_compress_finalize(struct cmcompress_stream* cdata);
-
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif /* cmcompress__h_ */
diff --git a/Utilities/cmcompress/compress.c.original b/Utilities/cmcompress/compress.c.original
deleted file mode 100644
index 5062bda..0000000
--- a/Utilities/cmcompress/compress.c.original
+++ /dev/null
@@ -1,1308 +0,0 @@
-/*
- * Copyright (c) 1985, 1986 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * James A. Woods, derived from original work by Spencer Thomas
- * and Joseph Orost.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-char copyright[] =
-"@(#) Copyright (c) 1985, 1986 The Regents of the University of California.\n\
- All rights reserved.\n";
-#endif /* not lint */
-
-#ifndef lint
-static char sccsid[] = "@(#)compress.c 5.19 (Berkeley) 3/18/91";
-#endif /* not lint */
-
-/*
- * compress.c - File compression ala IEEE Computer, June 1984.
- *
- * Authors: Spencer W. Thomas (decvax!utah-cs!thomas)
- * Jim McKie (decvax!mcvax!jim)
- * Steve Davies (decvax!vax135!petsd!peora!srd)
- * Ken Turkowski (decvax!decwrl!turtlevax!ken)
- * James A. Woods (decvax!ihnp4!ames!jaw)
- * Joe Orost (decvax!vax135!petsd!joe)
- */
-
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <signal.h>
-#include <utime.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-
-/*
- * Set USERMEM to the maximum amount of physical user memory available
- * in bytes. USERMEM is used to determine the maximum BITS that can be used
- * for compression.
- *
- * SACREDMEM is the amount of physical memory saved for others; compress
- * will hog the rest.
- */
-#ifndef SACREDMEM
-#define SACREDMEM 0
-#endif
-
-#ifndef USERMEM
-# define USERMEM 450000 /* default user memory */
-#endif
-
-#ifdef pdp11
-# define BITS 12 /* max bits/code for 16-bit machine */
-# define NO_UCHAR /* also if "unsigned char" functions as signed char */
-# undef USERMEM
-#endif /* pdp11 */ /* don't forget to compile with -i */
-
-#ifdef USERMEM
-# if USERMEM >= (433484+SACREDMEM)
-# define PBITS 16
-# else
-# if USERMEM >= (229600+SACREDMEM)
-# define PBITS 15
-# else
-# if USERMEM >= (127536+SACREDMEM)
-# define PBITS 14
-# else
-# if USERMEM >= (73464+SACREDMEM)
-# define PBITS 13
-# else
-# define PBITS 12
-# endif
-# endif
-# endif
-# endif
-# undef USERMEM
-#endif /* USERMEM */
-
-#ifdef PBITS /* Preferred BITS for this memory size */
-# ifndef BITS
-# define BITS PBITS
-# endif BITS
-#endif /* PBITS */
-
-#if BITS == 16
-# define HSIZE 69001 /* 95% occupancy */
-#endif
-#if BITS == 15
-# define HSIZE 35023 /* 94% occupancy */
-#endif
-#if BITS == 14
-# define HSIZE 18013 /* 91% occupancy */
-#endif
-#if BITS == 13
-# define HSIZE 9001 /* 91% occupancy */
-#endif
-#if BITS <= 12
-# define HSIZE 5003 /* 80% occupancy */
-#endif
-
-/*
- * a code_int must be able to hold 2**BITS values of type int, and also -1
- */
-#if BITS > 15
-typedef long int code_int;
-#else
-typedef int code_int;
-#endif
-
-#ifdef SIGNED_COMPARE_SLOW
-typedef unsigned long int count_int;
-typedef unsigned short int count_short;
-#else
-typedef long int count_int;
-#endif
-
-#ifdef NO_UCHAR
- typedef char char_type;
-#else
- typedef unsigned char char_type;
-#endif /* UCHAR */
-char_type magic_header[] = { "\037\235" }; /* 1F 9D */
-
-/* Defines for third byte of header */
-#define BIT_MASK 0x1f
-#define BLOCK_MASK 0x80
-/* Masks 0x40 and 0x20 are free. I think 0x20 should mean that there is
- a fourth header byte (for expansion).
-*/
-#define INIT_BITS 9 /* initial number of bits/code */
-
-int n_bits; /* number of bits/code */
-int maxbits = BITS; /* user settable max # bits/code */
-code_int maxcode; /* maximum code, given n_bits */
-code_int maxmaxcode = 1 << BITS; /* should NEVER generate this code */
-#ifdef COMPATIBLE /* But wrong! */
-# define MAXCODE(n_bits) (1 << (n_bits) - 1)
-#else
-# define MAXCODE(n_bits) ((1 << (n_bits)) - 1)
-#endif /* COMPATIBLE */
-
-count_int htab [HSIZE];
-unsigned short codetab [HSIZE];
-
-#define htabof(i) htab[i]
-#define codetabof(i) codetab[i]
-code_int hsize = HSIZE; /* for dynamic table sizing */
-count_int fsize;
-
-/*
- * To save much memory, we overlay the table used by compress() with those
- * used by decompress(). The tab_prefix table is the same size and type
- * as the codetab. The tab_suffix table needs 2**BITS characters. We
- * get this from the beginning of htab. The output stack uses the rest
- * of htab, and contains characters. There is plenty of room for any
- * possible stack (stack used to be 8000 characters).
- */
-
-#define tab_prefixof(i) codetabof(i)
-# define tab_suffixof(i) ((char_type *)(htab))[i]
-# define de_stack ((char_type *)&tab_suffixof(1<<BITS))
-
-code_int free_ent = 0; /* first unused entry */
-int exit_stat = 0; /* per-file status */
-int perm_stat = 0; /* permanent status */
-
-code_int getcode();
-
-int nomagic = 0; /* Use a 3-byte magic number header, unless old file */
-int zcat_flg = 0; /* Write output on stdout, suppress messages */
-int precious = 1; /* Don't unlink output file on interrupt */
-int quiet = 1; /* don't tell me about compression */
-
-/*
- * block compression parameters -- after all codes are used up,
- * and compression rate changes, start over.
- */
-int block_compress = BLOCK_MASK;
-int clear_flg = 0;
-long int ratio = 0;
-#define CHECK_GAP 10000 /* ratio check interval */
-count_int checkpoint = CHECK_GAP;
-/*
- * the next two codes should not be changed lightly, as they must not
- * lie within the contiguous general code space.
- */
-#define FIRST 257 /* first free entry */
-#define CLEAR 256 /* table clear output code */
-
-int force = 0;
-char ofname [100];
-#ifdef DEBUG
-int debug, verbose;
-#endif
-sig_t oldint;
-int bgnd_flag;
-
-int do_decomp = 0;
-
-/*-
- * Algorithm from "A Technique for High Performance Data Compression",
- * Terry A. Welch, IEEE Computer Vol 17, No 6 (June 1984), pp 8-19.
- *
- * Usage: compress [-dfvc] [-b bits] [file ...]
- * Inputs:
- * -d: If given, decompression is done instead.
- *
- * -c: Write output on stdout, don't remove original.
- *
- * -b: Parameter limits the max number of bits/code.
- *
- * -f: Forces output file to be generated, even if one already
- * exists, and even if no space is saved by compressing.
- * If -f is not used, the user will be prompted if stdin is
- * a tty, otherwise, the output file will not be overwritten.
- *
- * -v: Write compression statistics
- *
- * file ...: Files to be compressed. If none specified, stdin
- * is used.
- * Outputs:
- * file.Z: Compressed form of file with same mode, owner, and utimes
- * or stdout (if stdin used as input)
- *
- * Assumptions:
- * When filenames are given, replaces with the compressed version
- * (.Z suffix) only if the file decreases in size.
- * Algorithm:
- * Modified Lempel-Ziv method (LZW). Basically finds common
- * substrings and replaces them with a variable size code. This is
- * deterministic, and can be done on the fly. Thus, the decompression
- * procedure needs no input table, but tracks the way the table was built.
- */
-
-main(argc, argv)
- int argc;
- char **argv;
-{
- extern int optind;
- extern char *optarg;
- struct stat statbuf;
- int ch, overwrite;
- char **filelist, **fileptr, *cp, tempname[MAXPATHLEN];
- void onintr(), oops();
-
- /* This bg check only works for sh. */
- if ((oldint = signal(SIGINT, SIG_IGN)) != SIG_IGN) {
- (void)signal(SIGINT, onintr);
- (void)signal(SIGSEGV, oops); /* XXX */
- }
- bgnd_flag = oldint != SIG_DFL;
-
-#ifdef COMPATIBLE
- nomagic = 1; /* Original didn't have a magic number */
-#endif
-
- if (cp = rindex(argv[0], '/'))
- ++cp;
- else
- cp = argv[0];
- if (strcmp(cp, "uncompress") == 0)
- do_decomp = 1;
- else if(strcmp(cp, "zcat") == 0) {
- do_decomp = 1;
- zcat_flg = 1;
- }
-
- /*
- * -b maxbits => maxbits.
- * -C => generate output compatible with compress 2.0.
- * -c => cat all output to stdout
- * -D => debug
- * -d => do_decomp
- * -f => force overwrite of output file
- * -n => no header: useful to uncompress old files
- * -V => print Version; debug verbose
- * -v => unquiet
- */
-
- overwrite = 0;
-#ifdef DEBUG
- while ((ch = getopt(argc, argv, "b:CcDdfnVv")) != EOF)
-#else
- while ((ch = getopt(argc, argv, "b:Ccdfnv")) != EOF)
-#endif
- switch(ch) {
- case 'b':
- maxbits = atoi(optarg);
- break;
- case 'C':
- block_compress = 0;
- break;
- case 'c':
- zcat_flg = 1;
- break;
-#ifdef DEBUG
- case 'D':
- debug = 1;
- break;
-#endif
- case 'd':
- do_decomp = 1;
- break;
- case 'f':
- overwrite = 1;
- force = 1;
- break;
- case 'n':
- nomagic = 1;
- break;
- case 'q':
- quiet = 1;
- break;
-#ifdef DEBUG
- case 'V':
- verbose = 1;
- break;
-#endif
- case 'v':
- quiet = 0;
- break;
- case '?':
- default:
- usage();
- }
- argc -= optind;
- argv += optind;
-
- if (maxbits < INIT_BITS)
- maxbits = INIT_BITS;
- if (maxbits > BITS)
- maxbits = BITS;
- maxmaxcode = 1 << maxbits;
-
- /* Build useless input file list. */
- filelist = fileptr = (char **)(malloc(argc * sizeof(*argv)));
- while (*argv)
- *fileptr++ = *argv++;
- *fileptr = NULL;
-
- if (*filelist != NULL) {
- for (fileptr = filelist; *fileptr; fileptr++) {
- exit_stat = 0;
- if (do_decomp) { /* DECOMPRESSION */
- /* Check for .Z suffix */
- if (strcmp(*fileptr + strlen(*fileptr) - 2, ".Z") != 0) {
- /* No .Z: tack one on */
- strcpy(tempname, *fileptr);
- strcat(tempname, ".Z");
- *fileptr = tempname;
- }
- /* Open input file */
- if ((freopen(*fileptr, "r", stdin)) == NULL) {
- perror(*fileptr);
- perm_stat = 1;
- continue;
- }
- /* Check the magic number */
- if (nomagic == 0) {
- if ((getchar() != (magic_header[0] & 0xFF))
- || (getchar() != (magic_header[1] & 0xFF))) {
- fprintf(stderr, "%s: not in compressed format\n",
- *fileptr);
- continue;
- }
- maxbits = getchar(); /* set -b from file */
- block_compress = maxbits & BLOCK_MASK;
- maxbits &= BIT_MASK;
- maxmaxcode = 1 << maxbits;
- if(maxbits > BITS) {
- fprintf(stderr,
- "%s: compressed with %d bits, can only handle %d bits\n",
- *fileptr, maxbits, BITS);
- continue;
- }
- }
- /* Generate output filename */
- strcpy(ofname, *fileptr);
- ofname[strlen(*fileptr) - 2] = '\0'; /* Strip off .Z */
- } else { /* COMPRESSION */
- if (strcmp(*fileptr + strlen(*fileptr) - 2, ".Z") == 0) {
- fprintf(stderr, "%s: already has .Z suffix -- no change\n",
- *fileptr);
- continue;
- }
- /* Open input file */
- if ((freopen(*fileptr, "r", stdin)) == NULL) {
- perror(*fileptr);
- perm_stat = 1;
- continue;
- }
- stat ( *fileptr, &statbuf );
- fsize = (long) statbuf.st_size;
- /*
- * tune hash table size for small files -- ad hoc,
- * but the sizes match earlier #defines, which
- * serve as upper bounds on the number of output codes.
- */
- hsize = HSIZE;
- if ( fsize < (1 << 12) )
- hsize = MIN ( 5003, HSIZE );
- else if ( fsize < (1 << 13) )
- hsize = MIN ( 9001, HSIZE );
- else if ( fsize < (1 << 14) )
- hsize = MIN ( 18013, HSIZE );
- else if ( fsize < (1 << 15) )
- hsize = MIN ( 35023, HSIZE );
- else if ( fsize < 47000 )
- hsize = MIN ( 50021, HSIZE );
-
- /* Generate output filename */
- strcpy(ofname, *fileptr);
- strcat(ofname, ".Z");
- }
- /* Check for overwrite of existing file */
- if (overwrite == 0 && zcat_flg == 0) {
- if (stat(ofname, &statbuf) == 0) {
- char response[2];
- response[0] = 'n';
- fprintf(stderr, "%s already exists;", ofname);
- if (bgnd_flag == 0 && isatty(2)) {
- fprintf(stderr, " do you wish to overwrite %s (y or n)? ",
- ofname);
- fflush(stderr);
- read(2, response, 2);
- while (response[1] != '\n') {
- if (read(2, response+1, 1) < 0) { /* Ack! */
- perror("stderr"); break;
- }
- }
- }
- if (response[0] != 'y') {
- fprintf(stderr, "\tnot overwritten\n");
- continue;
- }
- }
- }
- if(zcat_flg == 0) { /* Open output file */
- if (freopen(ofname, "w", stdout) == NULL) {
- perror(ofname);
- perm_stat = 1;
- continue;
- }
- precious = 0;
- if(!quiet)
- fprintf(stderr, "%s: ", *fileptr);
- }
-
- /* Actually do the compression/decompression */
- if (do_decomp == 0) compress();
-#ifndef DEBUG
- else decompress();
-#else
- else if (debug == 0) decompress();
- else printcodes();
- if (verbose) dump_tab();
-#endif /* DEBUG */
- if(zcat_flg == 0) {
- copystat(*fileptr, ofname); /* Copy stats */
- precious = 1;
- if((exit_stat == 1) || (!quiet))
- putc('\n', stderr);
- }
- }
- } else { /* Standard input */
- if (do_decomp == 0) {
- compress();
-#ifdef DEBUG
- if(verbose) dump_tab();
-#endif /* DEBUG */
- if(!quiet)
- putc('\n', stderr);
- } else {
- /* Check the magic number */
- if (nomagic == 0) {
- if ((getchar()!=(magic_header[0] & 0xFF))
- || (getchar()!=(magic_header[1] & 0xFF))) {
- fprintf(stderr, "stdin: not in compressed format\n");
- exit(1);
- }
- maxbits = getchar(); /* set -b from file */
- block_compress = maxbits & BLOCK_MASK;
- maxbits &= BIT_MASK;
- maxmaxcode = 1 << maxbits;
- fsize = 100000; /* assume stdin large for USERMEM */
- if(maxbits > BITS) {
- fprintf(stderr,
- "stdin: compressed with %d bits, can only handle %d bits\n",
- maxbits, BITS);
- exit(1);
- }
- }
-#ifndef DEBUG
- decompress();
-#else
- if (debug == 0) decompress();
- else printcodes();
- if (verbose) dump_tab();
-#endif /* DEBUG */
- }
- }
- exit(perm_stat ? perm_stat : exit_stat);
-}
-
-static int offset;
-long int in_count = 1; /* length of input */
-long int bytes_out; /* length of compressed output */
-long int out_count = 0; /* # of codes output (for debugging) */
-
-/*
- * compress stdin to stdout
- *
- * Algorithm: use open addressing double hashing (no chaining) on the
- * prefix code / next character combination. We do a variant of Knuth's
- * algorithm D (vol. 3, sec. 6.4) along with G. Knott's relatively-prime
- * secondary probe. Here, the modular division first probe is gives way
- * to a faster exclusive-or manipulation. Also do block compression with
- * an adaptive reset, whereby the code table is cleared when the compression
- * ratio decreases, but after the table fills. The variable-length output
- * codes are re-sized at this point, and a special CLEAR code is generated
- * for the decompressor. Late addition: construct the table according to
- * file size for noticeable speed improvement on small files. Please direct
- * questions about this implementation to ames!jaw.
- */
-
-compress()
-{
- register long fcode;
- register code_int i = 0;
- register int c;
- register code_int ent;
- register int disp;
- register code_int hsize_reg;
- register int hshift;
-
-#ifndef COMPATIBLE
- if (nomagic == 0) {
- putchar(magic_header[0]);
- putchar(magic_header[1]);
- putchar((char)(maxbits | block_compress));
- if(ferror(stdout))
- writeerr();
- }
-#endif /* COMPATIBLE */
-
- offset = 0;
- bytes_out = 3; /* includes 3-byte header mojo */
- out_count = 0;
- clear_flg = 0;
- ratio = 0;
- in_count = 1;
- checkpoint = CHECK_GAP;
- maxcode = MAXCODE(n_bits = INIT_BITS);
- free_ent = ((block_compress) ? FIRST : 256 );
-
- ent = getchar ();
-
- hshift = 0;
- for ( fcode = (long) hsize; fcode < 65536L; fcode *= 2L )
- hshift++;
- hshift = 8 - hshift; /* set hash code range bound */
-
- hsize_reg = hsize;
- cl_hash( (count_int) hsize_reg); /* clear hash table */
-
-#ifdef SIGNED_COMPARE_SLOW
- while ( (c = getchar()) != (unsigned) EOF ) {
-#else
- while ( (c = getchar()) != EOF ) {
-#endif
- in_count++;
- fcode = (long) (((long) c << maxbits) + ent);
- i = ((c << hshift) ^ ent); /* xor hashing */
-
- if ( htabof (i) == fcode ) {
- ent = codetabof (i);
- continue;
- } else if ( (long)htabof (i) < 0 ) /* empty slot */
- goto nomatch;
- disp = hsize_reg - i; /* secondary hash (after G. Knott) */
- if ( i == 0 )
- disp = 1;
-probe:
- if ( (i -= disp) < 0 )
- i += hsize_reg;
-
- if ( htabof (i) == fcode ) {
- ent = codetabof (i);
- continue;
- }
- if ( (long)htabof (i) > 0 )
- goto probe;
-nomatch:
- output ( (code_int) ent );
- out_count++;
- ent = c;
-#ifdef SIGNED_COMPARE_SLOW
- if ( (unsigned) free_ent < (unsigned) maxmaxcode) {
-#else
- if ( free_ent < maxmaxcode ) {
-#endif
- codetabof (i) = free_ent++; /* code -> hashtable */
- htabof (i) = fcode;
- }
- else if ( (count_int)in_count >= checkpoint && block_compress )
- cl_block ();
- }
- /*
- * Put out the final code.
- */
- output( (code_int)ent );
- out_count++;
- output( (code_int)-1 );
-
- /*
- * Print out stats on stderr
- */
- if(zcat_flg == 0 && !quiet) {
-#ifdef DEBUG
- fprintf( stderr,
- "%ld chars in, %ld codes (%ld bytes) out, compression factor: ",
- in_count, out_count, bytes_out );
- prratio( stderr, in_count, bytes_out );
- fprintf( stderr, "\n");
- fprintf( stderr, "\tCompression as in compact: " );
- prratio( stderr, in_count-bytes_out, in_count );
- fprintf( stderr, "\n");
- fprintf( stderr, "\tLargest code (of last block) was %d (%d bits)\n",
- free_ent - 1, n_bits );
-#else /* !DEBUG */
- fprintf( stderr, "Compression: " );
- prratio( stderr, in_count-bytes_out, in_count );
-#endif /* DEBUG */
- }
- if(bytes_out > in_count) /* exit(2) if no savings */
- exit_stat = 2;
- return;
-}
-
-/*-
- * Output the given code.
- * Inputs:
- * code: A n_bits-bit integer. If == -1, then EOF. This assumes
- * that n_bits =< (long)wordsize - 1.
- * Outputs:
- * Outputs code to the file.
- * Assumptions:
- * Chars are 8 bits long.
- * Algorithm:
- * Maintain a BITS character long buffer (so that 8 codes will
- * fit in it exactly). Use the VAX insv instruction to insert each
- * code in turn. When the buffer fills up empty it and start over.
- */
-
-static char buf[BITS];
-
-#ifndef vax
-char_type lmask[9] = {0xff, 0xfe, 0xfc, 0xf8, 0xf0, 0xe0, 0xc0, 0x80, 0x00};
-char_type rmask[9] = {0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff};
-#endif /* vax */
-
-output( code )
-code_int code;
-{
-#ifdef DEBUG
- static int col = 0;
-#endif /* DEBUG */
-
- /*
- * On the VAX, it is important to have the register declarations
- * in exactly the order given, or the asm will break.
- */
- register int r_off = offset, bits= n_bits;
- register char * bp = buf;
-
-#ifdef DEBUG
- if ( verbose )
- fprintf( stderr, "%5d%c", code,
- (col+=6) >= 74 ? (col = 0, '\n') : ' ' );
-#endif /* DEBUG */
- if ( code >= 0 ) {
-#if defined(vax) && !defined(__GNUC__)
- /*
- * VAX and PCC DEPENDENT!! Implementation on other machines is
- * below.
- *
- * Translation: Insert BITS bits from the argument starting at
- * offset bits from the beginning of buf.
- */
- 0; /* Work around for pcc -O bug with asm and if stmt */
- asm( "insv 4(ap),r11,r10,(r9)" );
-#else
-/*
- * byte/bit numbering on the VAX is simulated by the following code
- */
- /*
- * Get to the first byte.
- */
- bp += (r_off >> 3);
- r_off &= 7;
- /*
- * Since code is always >= 8 bits, only need to mask the first
- * hunk on the left.
- */
- *bp = (*bp & rmask[r_off]) | (code << r_off) & lmask[r_off];
- bp++;
- bits -= (8 - r_off);
- code >>= 8 - r_off;
- /* Get any 8 bit parts in the middle (<=1 for up to 16 bits). */
- if ( bits >= 8 ) {
- *bp++ = code;
- code >>= 8;
- bits -= 8;
- }
- /* Last bits. */
- if(bits)
- *bp = code;
-#endif /* vax */
- offset += n_bits;
- if ( offset == (n_bits << 3) ) {
- bp = buf;
- bits = n_bits;
- bytes_out += bits;
- do {
- putchar(*bp++);
- if (ferror(stdout))
- writeerr();
- } while(--bits);
- offset = 0;
- }
-
- /*
- * If the next entry is going to be too big for the code size,
- * then increase it, if possible.
- */
- if ( free_ent > maxcode || (clear_flg > 0))
- {
- /*
- * Write the whole buffer, because the input side won't
- * discover the size increase until after it has read it.
- */
- if ( offset > 0 ) {
- if( fwrite( buf, 1, n_bits, stdout ) != n_bits)
- writeerr();
- bytes_out += n_bits;
- }
- offset = 0;
-
- if ( clear_flg ) {
- maxcode = MAXCODE (n_bits = INIT_BITS);
- clear_flg = 0;
- }
- else {
- n_bits++;
- if ( n_bits == maxbits )
- maxcode = maxmaxcode;
- else
- maxcode = MAXCODE(n_bits);
- }
-#ifdef DEBUG
- if ( debug ) {
- fprintf( stderr, "\nChange to %d bits\n", n_bits );
- col = 0;
- }
-#endif /* DEBUG */
- }
- } else {
- /*
- * At EOF, write the rest of the buffer.
- */
- if ( offset > 0 ) {
- offset = (offset + 7) / 8;
- if( fwrite( buf, 1, offset, stdout ) != offset )
- writeerr();
- bytes_out += offset;
- }
- offset = 0;
- (void)fflush( stdout );
- if( ferror( stdout ) )
- writeerr();
-#ifdef DEBUG
- if ( verbose )
- fprintf( stderr, "\n" );
-#endif
- }
-}
-
-/*
- * Decompress stdin to stdout. This routine adapts to the codes in the
- * file building the "string" table on-the-fly; requiring no table to
- * be stored in the compressed file. The tables used herein are shared
- * with those of the compress() routine. See the definitions above.
- */
-
-decompress() {
- register char_type *stackp;
- register int finchar;
- register code_int code, oldcode, incode;
- int n, nwritten, offset; /* Variables for buffered write */
- char buff[BUFSIZ]; /* Buffer for buffered write */
-
-
- /*
- * As above, initialize the first 256 entries in the table.
- */
- maxcode = MAXCODE(n_bits = INIT_BITS);
- for ( code = 255; code >= 0; code-- ) {
- tab_prefixof(code) = 0;
- tab_suffixof(code) = (char_type)code;
- }
- free_ent = ((block_compress) ? FIRST : 256 );
-
- finchar = oldcode = getcode();
- if(oldcode == -1) /* EOF already? */
- return; /* Get out of here */
-
- /* first code must be 8 bits = char */
- n=0;
- buff[n++] = (char)finchar;
-
- stackp = de_stack;
-
- while ( (code = getcode()) > -1 ) {
-
- if ( (code == CLEAR) && block_compress ) {
- for ( code = 255; code >= 0; code-- )
- tab_prefixof(code) = 0;
- clear_flg = 1;
- free_ent = FIRST - 1;
- if ( (code = getcode ()) == -1 ) /* O, untimely death! */
- break;
- }
- incode = code;
- /*
- * Special case for KwKwK string.
- */
- if ( code >= free_ent ) {
- *stackp++ = finchar;
- code = oldcode;
- }
-
- /*
- * Generate output characters in reverse order
- */
-#ifdef SIGNED_COMPARE_SLOW
- while ( ((unsigned long)code) >= ((unsigned long)256) ) {
-#else
- while ( code >= 256 ) {
-#endif
- *stackp++ = tab_suffixof(code);
- code = tab_prefixof(code);
- }
- *stackp++ = finchar = tab_suffixof(code);
-
- /*
- * And put them out in forward order
- */
- do {
- /*
- * About 60% of the time is spent in the putchar() call
- * that appeared here. It was originally
- * putchar ( *--stackp );
- * If we buffer the writes ourselves, we can go faster (about
- * 30%).
- *
- * At this point, the next line is the next *big* time
- * sink in the code. It takes up about 10% of the time.
- */
- buff[n++] = *--stackp;
- if (n == BUFSIZ) {
- offset = 0;
- do {
- nwritten = write(fileno(stdout), &buff[offset], n);
- if (nwritten < 0)
- writeerr();
- offset += nwritten;
- } while ((n -= nwritten) > 0);
- }
- } while ( stackp > de_stack );
-
- /*
- * Generate the new entry.
- */
- if ( (code=free_ent) < maxmaxcode ) {
- tab_prefixof(code) = (unsigned short)oldcode;
- tab_suffixof(code) = finchar;
- free_ent = code+1;
- }
- /*
- * Remember previous code.
- */
- oldcode = incode;
- }
- /*
- * Flush the stuff remaining in our buffer...
- */
- offset = 0;
- while (n > 0) {
- nwritten = write(fileno(stdout), &buff[offset], n);
- if (nwritten < 0)
- writeerr();
- offset += nwritten;
- n -= nwritten;
- }
-}
-
-/*-
- * Read one code from the standard input. If EOF, return -1.
- * Inputs:
- * stdin
- * Outputs:
- * code or -1 is returned.
- */
-code_int
-getcode() {
- /*
- * On the VAX, it is important to have the register declarations
- * in exactly the order given, or the asm will break.
- */
- register code_int code;
- static int offset = 0, size = 0;
- static char_type buf[BITS];
- register int r_off, bits;
- register char_type *bp = buf;
-
- if ( clear_flg > 0 || offset >= size || free_ent > maxcode ) {
- /*
- * If the next entry will be too big for the current code
- * size, then we must increase the size. This implies reading
- * a new buffer full, too.
- */
- if ( free_ent > maxcode ) {
- n_bits++;
- if ( n_bits == maxbits )
- maxcode = maxmaxcode; /* won't get any bigger now */
- else
- maxcode = MAXCODE(n_bits);
- }
- if ( clear_flg > 0) {
- maxcode = MAXCODE (n_bits = INIT_BITS);
- clear_flg = 0;
- }
- size = fread( buf, 1, n_bits, stdin );
- if ( size <= 0 )
- return -1; /* end of file */
- offset = 0;
- /* Round size down to integral number of codes */
- size = (size << 3) - (n_bits - 1);
- }
- r_off = offset;
- bits = n_bits;
-#ifdef vax
- asm( "extzv r10,r9,(r8),r11" );
-#else /* not a vax */
- /*
- * Get to the first byte.
- */
- bp += (r_off >> 3);
- r_off &= 7;
- /* Get first part (low order bits) */
-#ifdef NO_UCHAR
- code = ((*bp++ >> r_off) & rmask[8 - r_off]) & 0xff;
-#else
- code = (*bp++ >> r_off);
-#endif /* NO_UCHAR */
- bits -= (8 - r_off);
- r_off = 8 - r_off; /* now, offset into code word */
- /* Get any 8 bit parts in the middle (<=1 for up to 16 bits). */
- if ( bits >= 8 ) {
-#ifdef NO_UCHAR
- code |= (*bp++ & 0xff) << r_off;
-#else
- code |= *bp++ << r_off;
-#endif /* NO_UCHAR */
- r_off += 8;
- bits -= 8;
- }
- /* high order bits. */
- code |= (*bp & rmask[bits]) << r_off;
-#endif /* vax */
- offset += n_bits;
-
- return code;
-}
-
-#ifdef DEBUG
-printcodes()
-{
- /*
- * Just print out codes from input file. For debugging.
- */
- code_int code;
- int col = 0, bits;
-
- bits = n_bits = INIT_BITS;
- maxcode = MAXCODE(n_bits);
- free_ent = ((block_compress) ? FIRST : 256 );
- while ( ( code = getcode() ) >= 0 ) {
- if ( (code == CLEAR) && block_compress ) {
- free_ent = FIRST - 1;
- clear_flg = 1;
- }
- else if ( free_ent < maxmaxcode )
- free_ent++;
- if ( bits != n_bits ) {
- fprintf(stderr, "\nChange to %d bits\n", n_bits );
- bits = n_bits;
- col = 0;
- }
- fprintf(stderr, "%5d%c", code, (col+=6) >= 74 ? (col = 0, '\n') : ' ' );
- }
- putc( '\n', stderr );
- exit( 0 );
-}
-
-code_int sorttab[1<<BITS]; /* sorted pointers into htab */
-
-dump_tab() /* dump string table */
-{
- register int i, first;
- register ent;
-#define STACK_SIZE 15000
- int stack_top = STACK_SIZE;
- register c;
-
- if(do_decomp == 0) { /* compressing */
- register int flag = 1;
-
- for(i=0; i<hsize; i++) { /* build sort pointers */
- if((long)htabof(i) >= 0) {
- sorttab[codetabof(i)] = i;
- }
- }
- first = block_compress ? FIRST : 256;
- for(i = first; i < free_ent; i++) {
- fprintf(stderr, "%5d: \"", i);
- de_stack[--stack_top] = '\n';
- de_stack[--stack_top] = '"';
- stack_top = in_stack((htabof(sorttab[i])>>maxbits)&0xff,
- stack_top);
- for(ent=htabof(sorttab[i]) & ((1<<maxbits)-1);
- ent > 256;
- ent=htabof(sorttab[ent]) & ((1<<maxbits)-1)) {
- stack_top = in_stack(htabof(sorttab[ent]) >> maxbits,
- stack_top);
- }
- stack_top = in_stack(ent, stack_top);
- fwrite( &de_stack[stack_top], 1, STACK_SIZE-stack_top, stderr);
- stack_top = STACK_SIZE;
- }
- } else if(!debug) { /* decompressing */
-
- for ( i = 0; i < free_ent; i++ ) {
- ent = i;
- c = tab_suffixof(ent);
- if ( isascii(c) && isprint(c) )
- fprintf( stderr, "%5d: %5d/'%c' \"",
- ent, tab_prefixof(ent), c );
- else
- fprintf( stderr, "%5d: %5d/\\%03o \"",
- ent, tab_prefixof(ent), c );
- de_stack[--stack_top] = '\n';
- de_stack[--stack_top] = '"';
- for ( ; ent != NULL;
- ent = (ent >= FIRST ? tab_prefixof(ent) : NULL) ) {
- stack_top = in_stack(tab_suffixof(ent), stack_top);
- }
- fwrite( &de_stack[stack_top], 1, STACK_SIZE - stack_top, stderr );
- stack_top = STACK_SIZE;
- }
- }
-}
-
-int
-in_stack(c, stack_top)
- register c, stack_top;
-{
- if ( (isascii(c) && isprint(c) && c != '\\') || c == ' ' ) {
- de_stack[--stack_top] = c;
- } else {
- switch( c ) {
- case '\n': de_stack[--stack_top] = 'n'; break;
- case '\t': de_stack[--stack_top] = 't'; break;
- case '\b': de_stack[--stack_top] = 'b'; break;
- case '\f': de_stack[--stack_top] = 'f'; break;
- case '\r': de_stack[--stack_top] = 'r'; break;
- case '\\': de_stack[--stack_top] = '\\'; break;
- default:
- de_stack[--stack_top] = '0' + c % 8;
- de_stack[--stack_top] = '0' + (c / 8) % 8;
- de_stack[--stack_top] = '0' + c / 64;
- break;
- }
- de_stack[--stack_top] = '\\';
- }
- return stack_top;
-}
-#endif /* DEBUG */
-
-writeerr()
-{
- (void)fprintf(stderr, "compress: %s: %s\n",
- ofname[0] ? ofname : "stdout", strerror(errno));
- (void)unlink(ofname);
- exit(1);
-}
-
-copystat(ifname, ofname)
-char *ifname, *ofname;
-{
- struct stat statbuf;
- int mode;
- struct utimbuf tp;
-
- fclose(stdout);
- if (stat(ifname, &statbuf)) { /* Get stat on input file */
- perror(ifname);
- return;
- }
- if ((statbuf.st_mode & S_IFMT/*0170000*/) != S_IFREG/*0100000*/) {
- if(quiet)
- fprintf(stderr, "%s: ", ifname);
- fprintf(stderr, " -- not a regular file: unchanged");
- exit_stat = 1;
- perm_stat = 1;
- } else if (statbuf.st_nlink > 1) {
- if(quiet)
- fprintf(stderr, "%s: ", ifname);
- fprintf(stderr, " -- has %d other links: unchanged",
- statbuf.st_nlink - 1);
- exit_stat = 1;
- perm_stat = 1;
- } else if (exit_stat == 2 && (!force)) { /* No compression: remove file.Z */
- if(!quiet)
- fprintf(stderr, " -- file unchanged");
- } else { /* ***** Successful Compression ***** */
- exit_stat = 0;
- mode = statbuf.st_mode & 07777;
- if (chmod(ofname, mode)) /* Copy modes */
- perror(ofname);
- chown(ofname, statbuf.st_uid, statbuf.st_gid); /* Copy ownership */
- tp.actime = statbuf.st_atime;
- tp.modtime = statbuf.st_mtime;
- utime(ofname, &tp); /* Update last accessed and modified times */
- if (unlink(ifname)) /* Remove input file */
- perror(ifname);
- if(!quiet)
- fprintf(stderr, " -- replaced with %s", ofname);
- return; /* Successful return */
- }
-
- /* Unsuccessful return -- one of the tests failed */
- if (unlink(ofname))
- perror(ofname);
-}
-
-void
-onintr ( )
-{
- if (!precious)
- unlink ( ofname );
- exit ( 1 );
-}
-
-void
-oops ( ) /* wild pointer -- assume bad input */
-{
- if ( do_decomp )
- fprintf ( stderr, "uncompress: corrupt input\n" );
- unlink ( ofname );
- exit ( 1 );
-}
-
-cl_block () /* table clear for block compress */
-{
- register long int rat;
-
- checkpoint = in_count + CHECK_GAP;
-#ifdef DEBUG
- if ( debug ) {
- fprintf ( stderr, "count: %ld, ratio: ", in_count );
- prratio ( stderr, in_count, bytes_out );
- fprintf ( stderr, "\n");
- }
-#endif /* DEBUG */
-
- if(in_count > 0x007fffff) { /* shift will overflow */
- rat = bytes_out >> 8;
- if(rat == 0) { /* Don't divide by zero */
- rat = 0x7fffffff;
- } else {
- rat = in_count / rat;
- }
- } else {
- rat = (in_count << 8) / bytes_out; /* 8 fractional bits */
- }
- if ( rat > ratio ) {
- ratio = rat;
- } else {
- ratio = 0;
-#ifdef DEBUG
- if(verbose)
- dump_tab(); /* dump string table */
-#endif
- cl_hash ( (count_int) hsize );
- free_ent = FIRST;
- clear_flg = 1;
- output ( (code_int) CLEAR );
-#ifdef DEBUG
- if(debug)
- fprintf ( stderr, "clear\n" );
-#endif /* DEBUG */
- }
-}
-
-cl_hash(hsize) /* reset code table */
- register count_int hsize;
-{
- register count_int *htab_p = htab+hsize;
- register long i;
- register long m1 = -1;
-
- i = hsize - 16;
- do { /* might use Sys V memset(3) here */
- *(htab_p-16) = m1;
- *(htab_p-15) = m1;
- *(htab_p-14) = m1;
- *(htab_p-13) = m1;
- *(htab_p-12) = m1;
- *(htab_p-11) = m1;
- *(htab_p-10) = m1;
- *(htab_p-9) = m1;
- *(htab_p-8) = m1;
- *(htab_p-7) = m1;
- *(htab_p-6) = m1;
- *(htab_p-5) = m1;
- *(htab_p-4) = m1;
- *(htab_p-3) = m1;
- *(htab_p-2) = m1;
- *(htab_p-1) = m1;
- htab_p -= 16;
- } while ((i -= 16) >= 0);
- for ( i += 16; i > 0; i-- )
- *--htab_p = m1;
-}
-
-prratio(stream, num, den)
-FILE *stream;
-long int num, den;
-{
- register int q; /* Doesn't need to be long */
-
- if(num > 214748L) { /* 2147483647/10000 */
- q = num / (den / 10000L);
- } else {
- q = 10000L * num / den; /* Long calculations, though */
- }
- if (q < 0) {
- putc('-', stream);
- q = -q;
- }
- fprintf(stream, "%d.%02d%%", q / 100, q % 100);
-}
-
-usage()
-{
- (void)fprintf(stderr,
-#ifdef DEBUG
- "compress [-CDVcdfnv] [-b maxbits] [file ...]\n");
-#else
- "compress [-Ccdfnv] [-b maxbits] [file ...]\n");
-#endif
- exit(1);
-}