Move various compression libraries into single subdirectory

This improves the organization of the cpukit.

Closes #4912.

1 files changed, 0 insertions, 677 deletions

diff --git a/cpukit/zlib/gzwrite.c b/cpukit/zlib/gzwrite.c
deleted file mode 100644
index eb8a0e5893..0000000000
--- a/cpukit/zlib/gzwrite.c
+++ /dev/null
@@ -1,677 +0,0 @@
-/* gzwrite.c -- zlib functions for writing gzip files
- * Copyright (C) 2004-2019 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "gzguts.h"
-
-/* Local functions */
-local int gz_init OF((gz_statep));
-local int gz_comp OF((gz_statep, int));
-local int gz_zero OF((gz_statep, z_off64_t));
-local z_size_t gz_write OF((gz_statep, voidpc, z_size_t));
-
-/* Initialize state for writing a gzip file.  Mark initialization by setting
-   state->size to non-zero.  Return -1 on a memory allocation failure, or 0 on
-   success. */
-local int gz_init(state)
-    gz_statep state;
-{
-    int ret;
-    z_streamp strm = &(state->strm);
-
-    /* allocate input buffer (double size for gzprintf) */
-    state->in = (unsigned char *)malloc(state->want << 1);
-    if (state->in == NULL) {
-        gz_error(state, Z_MEM_ERROR, "out of memory");
-        return -1;
-    }
-
-    /* only need output buffer and deflate state if compressing */
-    if (!state->direct) {
-        /* allocate output buffer */
-        state->out = (unsigned char *)malloc(state->want);
-        if (state->out == NULL) {
-            free(state->in);
-            gz_error(state, Z_MEM_ERROR, "out of memory");
-            return -1;
-        }
-
-        /* allocate deflate memory, set up for gzip compression */
-        strm->zalloc = Z_NULL;
-        strm->zfree = Z_NULL;
-        strm->opaque = Z_NULL;
-        ret = deflateInit2(strm, state->level, Z_DEFLATED,
-                           MAX_WBITS + 16, DEF_MEM_LEVEL, state->strategy);
-        if (ret != Z_OK) {
-            free(state->out);
-            free(state->in);
-            gz_error(state, Z_MEM_ERROR, "out of memory");
-            return -1;
-        }
-        strm->next_in = NULL;
-    }
-
-    /* mark state as initialized */
-    state->size = state->want;
-
-    /* initialize write buffer if compressing */
-    if (!state->direct) {
-        strm->avail_out = state->size;
-        strm->next_out = state->out;
-        state->x.next = strm->next_out;
-    }
-    return 0;
-}
-
-/* Compress whatever is at avail_in and next_in and write to the output file.
-   Return -1 if there is an error writing to the output file or if gz_init()
-   fails to allocate memory, otherwise 0.  flush is assumed to be a valid
-   deflate() flush value.  If flush is Z_FINISH, then the deflate() state is
-   reset to start a new gzip stream.  If gz->direct is true, then simply write
-   to the output file without compressing, and ignore flush. */
-local int gz_comp(state, flush)
-    gz_statep state;
-    int flush;
-{
-    int ret, writ;
-    unsigned have, put, max = ((unsigned)-1 >> 2) + 1;
-    z_streamp strm = &(state->strm);
-
-    /* allocate memory if this is the first time through */
-    if (state->size == 0 && gz_init(state) == -1)
-        return -1;
-
-    /* write directly if requested */
-    if (state->direct) {
-        while (strm->avail_in) {
-            put = strm->avail_in > max ? max : strm->avail_in;
-            writ = write(state->fd, strm->next_in, put);
-            if (writ < 0) {
-                gz_error(state, Z_ERRNO, zstrerror());
-                return -1;
-            }
-            strm->avail_in -= (unsigned)writ;
-            strm->next_in += writ;
-        }
-        return 0;
-    }
-
-    /* check for a pending reset */
-    if (state->reset) {
-        /* don't start a new gzip member unless there is data to write */
-        if (strm->avail_in == 0)
-            return 0;
-        deflateReset(strm);
-        state->reset = 0;
-    }
-
-    /* run deflate() on provided input until it produces no more output */
-    ret = Z_OK;
-    do {
-        /* write out current buffer contents if full, or if flushing, but if
-           doing Z_FINISH then don't write until we get to Z_STREAM_END */
-        if (strm->avail_out == 0 || (flush != Z_NO_FLUSH &&
-            (flush != Z_FINISH || ret == Z_STREAM_END))) {
-            while (strm->next_out > state->x.next) {
-                put = strm->next_out - state->x.next > (int)max ? max :
-                      (unsigned)(strm->next_out - state->x.next);
-                writ = write(state->fd, state->x.next, put);
-                if (writ < 0) {
-                    gz_error(state, Z_ERRNO, zstrerror());
-                    return -1;
-                }
-                state->x.next += writ;
-            }
-            if (strm->avail_out == 0) {
-                strm->avail_out = state->size;
-                strm->next_out = state->out;
-                state->x.next = state->out;
-            }
-        }
-
-        /* compress */
-        have = strm->avail_out;
-        ret = deflate(strm, flush);
-        if (ret == Z_STREAM_ERROR) {
-            gz_error(state, Z_STREAM_ERROR,
-                      "internal error: deflate stream corrupt");
-            return -1;
-        }
-        have -= strm->avail_out;
-    } while (have);
-
-    /* if that completed a deflate stream, allow another to start */
-    if (flush == Z_FINISH)
-        state->reset = 1;
-
-    /* all done, no errors */
-    return 0;
-}
-
-/* Compress len zeros to output.  Return -1 on a write error or memory
-   allocation failure by gz_comp(), or 0 on success. */
-local int gz_zero(state, len)
-    gz_statep state;
-    z_off64_t len;
-{
-    int first;
-    unsigned n;
-    z_streamp strm = &(state->strm);
-
-    /* consume whatever's left in the input buffer */
-    if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
-        return -1;
-
-    /* compress len zeros (len guaranteed > 0) */
-    first = 1;
-    while (len) {
-        n = GT_OFF(state->size) || (z_off64_t)state->size > len ?
-            (unsigned)len : state->size;
-        if (first) {
-            memset(state->in, 0, n);
-            first = 0;
-        }
-        strm->avail_in = n;
-        strm->next_in = state->in;
-        state->x.pos += n;
-        if (gz_comp(state, Z_NO_FLUSH) == -1)
-            return -1;
-        len -= n;
-    }
-    return 0;
-}
-
-/* Write len bytes from buf to file.  Return the number of bytes written.  If
-   the returned value is less than len, then there was an error. */
-local z_size_t gz_write(state, buf, len)
-    gz_statep state;
-    voidpc buf;
-    z_size_t len;
-{
-    z_size_t put = len;
-
-    /* if len is zero, avoid unnecessary operations */
-    if (len == 0)
-        return 0;
-
-    /* allocate memory if this is the first time through */
-    if (state->size == 0 && gz_init(state) == -1)
-        return 0;
-
-    /* check for seek request */
-    if (state->seek) {
-        state->seek = 0;
-        if (gz_zero(state, state->skip) == -1)
-            return 0;
-    }
-
-    /* for small len, copy to input buffer, otherwise compress directly */
-    if (len < state->size) {
-        /* copy to input buffer, compress when full */
-        do {
-            unsigned have, copy;
-
-            if (state->strm.avail_in == 0)
-                state->strm.next_in = state->in;
-            have = (unsigned)((state->strm.next_in + state->strm.avail_in) -
-                              state->in);
-            copy = state->size - have;
-            if (copy > len)
-                copy = (unsigned)len;
-            memcpy(state->in + have, buf, copy);
-            state->strm.avail_in += copy;
-            state->x.pos += copy;
-            buf = (const char *)buf + copy;
-            len -= copy;
-            if (len && gz_comp(state, Z_NO_FLUSH) == -1)
-                return 0;
-        } while (len);
-    }
-    else {
-        /* consume whatever's left in the input buffer */
-        if (state->strm.avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
-            return 0;
-
-        /* directly compress user buffer to file */
-        state->strm.next_in = (z_const Bytef *)buf;
-        do {
-            unsigned n = (unsigned)-1;
-            if (n > len)
-                n = (unsigned)len;
-            state->strm.avail_in = n;
-            state->x.pos += n;
-            if (gz_comp(state, Z_NO_FLUSH) == -1)
-                return 0;
-            len -= n;
-        } while (len);
-    }
-
-    /* input was all buffered or compressed */
-    return put;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzwrite(file, buf, len)
-    gzFile file;
-    voidpc buf;
-    unsigned len;
-{
-    gz_statep state;
-
-    /* get internal structure */
-    if (file == NULL)
-        return 0;
-    state = (gz_statep)file;
-
-    /* check that we're writing and that there's no error */
-    if (state->mode != GZ_WRITE || state->err != Z_OK)
-        return 0;
-
-    /* since an int is returned, make sure len fits in one, otherwise return
-       with an error (this avoids a flaw in the interface) */
-    if ((int)len < 0) {
-        gz_error(state, Z_DATA_ERROR, "requested length does not fit in int");
-        return 0;
-    }
-
-    /* write len bytes from buf (the return value will fit in an int) */
-    return (int)gz_write(state, buf, len);
-}
-
-/* -- see zlib.h -- */
-z_size_t ZEXPORT gzfwrite(buf, size, nitems, file)
-    voidpc buf;
-    z_size_t size;
-    z_size_t nitems;
-    gzFile file;
-{
-    z_size_t len;
-    gz_statep state;
-
-    /* get internal structure */
-    if (file == NULL)
-        return 0;
-    state = (gz_statep)file;
-
-    /* check that we're writing and that there's no error */
-    if (state->mode != GZ_WRITE || state->err != Z_OK)
-        return 0;
-
-    /* compute bytes to read -- error on overflow */
-    len = nitems * size;
-    if (size && len / size != nitems) {
-        gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t");
-        return 0;
-    }
-
-    /* write len bytes to buf, return the number of full items written */
-    return len ? gz_write(state, buf, len) / size : 0;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzputc(file, c)
-    gzFile file;
-    int c;
-{
-    unsigned have;
-    unsigned char buf[1];
-    gz_statep state;
-    z_streamp strm;
-
-    /* get internal structure */
-    if (file == NULL)
-        return -1;
-    state = (gz_statep)file;
-    strm = &(state->strm);
-
-    /* check that we're writing and that there's no error */
-    if (state->mode != GZ_WRITE || state->err != Z_OK)
-        return -1;
-
-    /* check for seek request */
-    if (state->seek) {
-        state->seek = 0;
-        if (gz_zero(state, state->skip) == -1)
-            return -1;
-    }
-
-    /* try writing to input buffer for speed (state->size == 0 if buffer not
-       initialized) */
-    if (state->size) {
-        if (strm->avail_in == 0)
-            strm->next_in = state->in;
-        have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
-        if (have < state->size) {
-            state->in[have] = (unsigned char)c;
-            strm->avail_in++;
-            state->x.pos++;
-            return c & 0xff;
-        }
-    }
-
-    /* no room in buffer or not initialized, use gz_write() */
-    buf[0] = (unsigned char)c;
-    if (gz_write(state, buf, 1) != 1)
-        return -1;
-    return c & 0xff;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzputs(file, s)
-    gzFile file;
-    const char *s;
-{
-    z_size_t len, put;
-    gz_statep state;
-
-    /* get internal structure */
-    if (file == NULL)
-        return -1;
-    state = (gz_statep)file;
-
-    /* check that we're writing and that there's no error */
-    if (state->mode != GZ_WRITE || state->err != Z_OK)
-        return -1;
-
-    /* write string */
-    len = strlen(s);
-    if ((int)len < 0 || (unsigned)len != len) {
-        gz_error(state, Z_STREAM_ERROR, "string length does not fit in int");
-        return -1;
-    }
-    put = gz_write(state, s, len);
-    return put < len ? -1 : (int)len;
-}
-
-#if defined(STDC) || defined(Z_HAVE_STDARG_H)
-#include <stdarg.h>
-
-/* -- see zlib.h -- */
-int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
-{
-    int len;
-    unsigned left;
-    char *next;
-    gz_statep state;
-    z_streamp strm;
-
-    /* get internal structure */
-    if (file == NULL)
-        return Z_STREAM_ERROR;
-    state = (gz_statep)file;
-    strm = &(state->strm);
-
-    /* check that we're writing and that there's no error */
-    if (state->mode != GZ_WRITE || state->err != Z_OK)
-        return Z_STREAM_ERROR;
-
-    /* make sure we have some buffer space */
-    if (state->size == 0 && gz_init(state) == -1)
-        return state->err;
-
-    /* check for seek request */
-    if (state->seek) {
-        state->seek = 0;
-        if (gz_zero(state, state->skip) == -1)
-            return state->err;
-    }
-
-    /* do the printf() into the input buffer, put length in len -- the input
-       buffer is double-sized just for this function, so there is guaranteed to
-       be state->size bytes available after the current contents */
-    if (strm->avail_in == 0)
-        strm->next_in = state->in;
-    next = (char *)(state->in + (strm->next_in - state->in) + strm->avail_in);
-    next[state->size - 1] = 0;
-#ifdef NO_vsnprintf
-#  ifdef HAS_vsprintf_void
-    (void)vsprintf(next, format, va);
-    for (len = 0; len < state->size; len++)
-        if (next[len] == 0) break;
-#  else
-    len = vsprintf(next, format, va);
-#  endif
-#else
-#  ifdef HAS_vsnprintf_void
-    (void)vsnprintf(next, state->size, format, va);
-    len = strlen(next);
-#  else
-    len = vsnprintf(next, state->size, format, va);
-#  endif
-#endif
-
-    /* check that printf() results fit in buffer */
-    if (len == 0 || (unsigned)len >= state->size || next[state->size - 1] != 0)
-        return 0;
-
-    /* update buffer and position, compress first half if past that */
-    strm->avail_in += (unsigned)len;
-    state->x.pos += len;
-    if (strm->avail_in >= state->size) {
-        left = strm->avail_in - state->size;
-        strm->avail_in = state->size;
-        if (gz_comp(state, Z_NO_FLUSH) == -1)
-            return state->err;
-        memmove(state->in, state->in + state->size, left);
-        strm->next_in = state->in;
-        strm->avail_in = left;
-    }
-    return len;
-}
-
-int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
-{
-    va_list va;
-    int ret;
-
-    va_start(va, format);
-    ret = gzvprintf(file, format, va);
-    va_end(va);
-    return ret;
-}
-
-#else /* !STDC && !Z_HAVE_STDARG_H */
-
-/* -- see zlib.h -- */
-int ZEXPORTVA gzprintf(file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
-                       a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
-    gzFile file;
-    const char *format;
-    int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
-        a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
-{
-    unsigned len, left;
-    char *next;
-    gz_statep state;
-    z_streamp strm;
-
-    /* get internal structure */
-    if (file == NULL)
-        return Z_STREAM_ERROR;
-    state = (gz_statep)file;
-    strm = &(state->strm);
-
-    /* check that can really pass pointer in ints */
-    if (sizeof(int) != sizeof(void *))
-        return Z_STREAM_ERROR;
-
-    /* check that we're writing and that there's no error */
-    if (state->mode != GZ_WRITE || state->err != Z_OK)
-        return Z_STREAM_ERROR;
-
-    /* make sure we have some buffer space */
-    if (state->size == 0 && gz_init(state) == -1)
-        return state->error;
-
-    /* check for seek request */
-    if (state->seek) {
-        state->seek = 0;
-        if (gz_zero(state, state->skip) == -1)
-            return state->error;
-    }
-
-    /* do the printf() into the input buffer, put length in len -- the input
-       buffer is double-sized just for this function, so there is guaranteed to
-       be state->size bytes available after the current contents */
-    if (strm->avail_in == 0)
-        strm->next_in = state->in;
-    next = (char *)(strm->next_in + strm->avail_in);
-    next[state->size - 1] = 0;
-#ifdef NO_snprintf
-#  ifdef HAS_sprintf_void
-    sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12,
-            a13, a14, a15, a16, a17, a18, a19, a20);
-    for (len = 0; len < size; len++)
-        if (next[len] == 0)
-            break;
-#  else
-    len = sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11,
-                  a12, a13, a14, a15, a16, a17, a18, a19, a20);
-#  endif
-#else
-#  ifdef HAS_snprintf_void
-    snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8, a9,
-             a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
-    len = strlen(next);
-#  else
-    len = snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8,
-                   a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
-#  endif
-#endif
-
-    /* check that printf() results fit in buffer */
-    if (len == 0 || len >= state->size || next[state->size - 1] != 0)
-        return 0;
-
-    /* update buffer and position, compress first half if past that */
-    strm->avail_in += len;
-    state->x.pos += len;
-    if (strm->avail_in >= state->size) {
-        left = strm->avail_in - state->size;
-        strm->avail_in = state->size;
-        if (gz_comp(state, Z_NO_FLUSH) == -1)
-            return state->err;
-        memmove(state->in, state->in + state->size, left);
-        strm->next_in = state->in;
-        strm->avail_in = left;
-    }
-    return (int)len;
-}
-
-#endif
-
-/* -- see zlib.h -- */
-int ZEXPORT gzflush(file, flush)
-    gzFile file;
-    int flush;
-{
-    gz_statep state;
-
-    /* get internal structure */
-    if (file == NULL)
-        return Z_STREAM_ERROR;
-    state = (gz_statep)file;
-
-    /* check that we're writing and that there's no error */
-    if (state->mode != GZ_WRITE || state->err != Z_OK)
-        return Z_STREAM_ERROR;
-
-    /* check flush parameter */
-    if (flush < 0 || flush > Z_FINISH)
-        return Z_STREAM_ERROR;
-
-    /* check for seek request */
-    if (state->seek) {
-        state->seek = 0;
-        if (gz_zero(state, state->skip) == -1)
-            return state->err;
-    }
-
-    /* compress remaining data with requested flush */
-    (void)gz_comp(state, flush);
-    return state->err;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzsetparams(file, level, strategy)
-    gzFile file;
-    int level;
-    int strategy;
-{
-    gz_statep state;
-    z_streamp strm;
-
-    /* get internal structure */
-    if (file == NULL)
-        return Z_STREAM_ERROR;
-    state = (gz_statep)file;
-    strm = &(state->strm);
-
-    /* check that we're writing and that there's no error */
-    if (state->mode != GZ_WRITE || state->err != Z_OK)
-        return Z_STREAM_ERROR;
-
-    /* if no change is requested, then do nothing */
-    if (level == state->level && strategy == state->strategy)
-        return Z_OK;
-
-    /* check for seek request */
-    if (state->seek) {
-        state->seek = 0;
-        if (gz_zero(state, state->skip) == -1)
-            return state->err;
-    }
-
-    /* change compression parameters for subsequent input */
-    if (state->size) {
-        /* flush previous input with previous parameters before changing */
-        if (strm->avail_in && gz_comp(state, Z_BLOCK) == -1)
-            return state->err;
-        deflateParams(strm, level, strategy);
-    }
-    state->level = level;
-    state->strategy = strategy;
-    return Z_OK;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzclose_w(file)
-    gzFile file;
-{
-    int ret = Z_OK;
-    gz_statep state;
-
-    /* get internal structure */
-    if (file == NULL)
-        return Z_STREAM_ERROR;
-    state = (gz_statep)file;
-
-    /* check that we're writing */
-    if (state->mode != GZ_WRITE)
-        return Z_STREAM_ERROR;
-
-    /* check for seek request */
-    if (state->seek) {
-        state->seek = 0;
-        if (gz_zero(state, state->skip) == -1)
-            ret = state->err;
-    }
-
-    /* flush, free memory, and close file */
-    if (gz_comp(state, Z_FINISH) == -1)
-        ret = state->err;
-    if (state->size) {
-        if (!state->direct) {
-            (void)deflateEnd(&(state->strm));
-            free(state->out);
-        }
-        free(state->in);
-    }
-    gz_error(state, Z_OK, NULL);
-    free(state->path);
-    if (close(state->fd) == -1)
-        ret = Z_ERRNO;
-    free(state);
-    return ret;
-}