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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /support/dktools/dk3strmb.c
Initial commit
Diffstat (limited to 'support/dktools/dk3strmb.c')
-rw-r--r--support/dktools/dk3strmb.c161
1 files changed, 161 insertions, 0 deletions
diff --git a/support/dktools/dk3strmb.c b/support/dktools/dk3strmb.c
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+/*
+ WARNING: This file was generated by dkct.
+ Changes you make here will be lost if dkct is run again!
+ You should modify the original source and run dkct on it.
+ Original source: dk3strmb.ctr
+*/
+
+/*
+Copyright (C) 2011-2017, Dirk Krause
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+* Redistributions in binary form must reproduce the above opyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+* Neither the name of the author nor the names of contributors may be used
+ to endorse or promote products derived from this software without specific
+ prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+*/
+
+/** @file dk3strmb.c The dk3strmb module.
+*/
+
+
+#line 10 "dk3strmb.ctr"
+
+#include "dk3all.h"
+
+
+
+
+
+
+#line 16 "dk3strmb.ctr"
+
+
+
+/** Low-level stream function to deal with bzip2 compression.
+ Closing the stream also closes the bzip2-file.
+ @param api API structure.
+*/
+static
+void
+dk3stream_bz_fct(dk3_stream_api_t *api)
+{
+#if DK3_HAVE_BZLIB_H
+ BZFILE *b = NULL; /* Low level I/O object. */
+ int res = 0; /* Operation result. */
+#endif
+ api->suc = 0;
+ (api->res).sz = 0;
+ (api->res).ec = DK3_ERROR_NOT_SUPPORTED;
+#if DK3_HAVE_BZLIB_H
+ b = (BZFILE *)((api->arg).d);
+ (api->res).ec = 0;
+ switch(api->cmd) {
+ case DK3_STREAM_API_READ: {
+ if(((api->arg).b) && ((api->arg).sz) && ((api->arg).d)) {
+ res = BZ2_bzread(b, (api->arg).b, (int)((api->arg).sz));
+ if(res > 0) {
+ api->suc = 1; (api->res).ec = 0; (api->res).sz = (size_t)res;
+ }
+ }
+ } break;
+ case DK3_STREAM_API_WRITE: {
+ if(((api->arg).b) && ((api->arg).sz) && ((api->arg).d)) {
+ res = BZ2_bzwrite(b, (api->arg).b, (int)((api->arg).sz));
+ if(res > 0) {
+ (api->res).sz = (size_t)res;
+ if((size_t)res == (api->arg).sz) {
+ api->suc = 1; (api->res).ec = 0;
+ }
+ }
+ }
+ } break;
+ case DK3_STREAM_API_FLUSH: {
+ if((api->arg).d) {
+ BZ2_bzflush(b);
+ api->suc = 1; (api->res).ec = 0;
+ /*
+ As the library manual explains BZ2_bzflush() does nothing.
+ So we always return success.
+ */
+ }
+ } break;
+ case DK3_STREAM_API_AT_END: {
+
+ } break;
+ case DK3_STREAM_API_CLOSE: {
+ if((api->arg).d) {
+ BZ2_bzclose(b);
+ api->suc = 1; (api->res).ec = 0;
+ }
+ } break;
+ case DK3_STREAM_API_ZERO_IS_END: {
+ api->suc = 1; (api->res).ec = 0; /* Correct if necessary */
+ } break;
+ case DK3_STREAM_API_ERROR: {
+ } break;
+ }
+#endif
+}
+
+
+
+/** Low-level stream function to deal with bzip2 compression.
+ Closing the stream does not close the bzip2 file.
+ @param api API structure.
+*/
+static
+void
+dk3stream_bz_fct_no_close(dk3_stream_api_t *api)
+{
+ if(api->cmd != DK3_STREAM_API_CLOSE) {
+ dk3stream_bz_fct(api);
+ } else {
+ api->suc = 1; (api->res).ec = 0;
+ }
+}
+
+
+
+#if DK3_HAVE_BZLIB_H
+
+/** Open a stream for an existing BZFILE.
+ @param b BZFILE already opened.
+ @param fl Read/write flags.
+ @param app Application structure for diagnostics, may be NULL.
+ @return Pointer to new stream on success, NULL on error.
+*/
+dk3_stream_t *
+dk3stream_open_bz2_app(BZFILE *b, int fl, dk3_app_t *app)
+{
+ dk3_stream_t *back = NULL;
+ if(b) {
+ back = dk3stream_open_app((void *)b, dk3stream_bz_fct_no_close, fl, app);
+ }
+ return back;
+}
+
+#endif
+
+
+
+/* vim: set ai sw=2 : */
+