183 lines
4.5 KiB
Plaintext
183 lines
4.5 KiB
Plaintext
---
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config.h.in | 3 ++
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configure.ac | 52 ++++++++++++++++++++++++++++++++++++++++++++
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lib/decompress.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
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3 files changed, 120 insertions(+)
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--- config.h.in
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+++ config.h.in 2018-11-23 13:11:12.684900437 +0000
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@@ -896,6 +896,9 @@
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/* Define to 1 if you have the `z' library (-lz). */
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#undef HAVE_LIBZ
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+/* Define to 1 if you have libzio for opening compressed manuals */
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+#undef HAVE_ZIO
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+
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/* Define to 1 if you have the <limits.h> header file. */
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#undef HAVE_LIMITS_H
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--- configure.ac
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+++ configure.ac 2018-11-23 13:09:58.982262008 +0000
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@@ -34,6 +34,18 @@ MAN_ARG_DEVICE
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MAN_ARG_DB
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MAN_ARG_CONFIG_FILE
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MAN_ARG_SECTIONS
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+AC_ARG_WITH([zio],
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+[AS_HELP_STRING([--with-zio=LIBRARY], [use zlib/libbz2 wrapper library LIBRARY (libzio)])],
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+ [if test -z "$withval" -o "$withval" = "yes"
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+ then
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+ zio=libzio
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+ elif test "$withval" = "no"
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+ then
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+ AC_MSG_ERROR(--with-zio requires an argument)
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+ else
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+ zio=$withval
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+ fi],
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+ [: ${zio=no}])
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MAN_ARG_AUTOMATIC_CREATE
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MAN_ARG_AUTOMATIC_UPDATE
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MAN_ARG_CATS
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@@ -325,6 +337,46 @@ AC_SUBST([unlzma])
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AC_SUBST([unxz])
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AC_SUBST([unlzip])
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MAN_COMPRESS_LIB([z], [gzopen])
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+dnl Check for zlib and libbz2 libraries to use this together
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+dnl with SUSE's libzio to open compressed info files.
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+dnl
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+if test "$zio" = "no" || test -n "$zio"
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+then
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+ AC_CHECK_HEADER(zio.h,[
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+ for lib in ${zio#lib} zio
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+ do
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+ AC_CHECK_LIB($lib, fzopen, [LIBS="-l$lib $LIBS"; am_cv_libzio=yes])
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+ done
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+ ])
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+ if test "$am_cv_libzio" = yes; then
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+ AC_DEFINE([COMP_SRC],[],[Define if you have compressors and want to support compressed cat files.])
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+ AC_DEFINE([HAVE_ZIO],[],[Define to 1 if you have libzio for opening compressed manuals])
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+ AC_CHECK_HEADER(zlib.h,[
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+ for lib in z gz
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+ do
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+ AC_CHECK_LIB($lib, gzopen, [LIBS="$LIBS -Wl,--no-as-needed -l$lib"; break])
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+ done
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+ ])
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+ AC_CHECK_HEADER(bzlib.h,[
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+ for lib in bz2 bzip2
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+ do
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+ AC_CHECK_LIB($lib, BZ2_bzopen, [LIBS="$LIBS -Wl,--no-as-needed -l$lib"; break])
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+ done
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+ ])
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+ AC_CHECK_HEADER(lzmadec.h, [
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+ for lib in lzma lzmadec
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+ do
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+ AC_CHECK_LIB($lib, lzmadec_open, [LIBS="$LIBS -Wl,--no-as-needed -l$lib"; break])
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+ done
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+ ])
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+ AC_CHECK_HEADER(lzma.h, [
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+ for lib in lzma
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+ do
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+ AC_CHECK_LIB($lib, lzma_easy_encoder, [LIBS="$LIBS -Wl,--no-as-needed -l$lib"; break])
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+ done
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+ ])
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+ fi
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+fi
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dnl To add more decompressors just follow the scheme above.
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# Check for various header files and associated libraries.
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--- lib/decompress.c
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+++ lib/decompress.c 2018-11-23 13:12:59.714923151 +0000
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@@ -38,6 +38,10 @@
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#include "xvasprintf.h"
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+#ifdef HAVE_ZIO
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+# include "zio.h"
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+#endif /* HAVE_ZIO */
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+
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#include "manconfig.h"
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#include "comp_src.h"
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#include "pipeline.h"
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@@ -69,6 +73,32 @@ static void decompress_zlib (void *data
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#endif /* HAVE_LIBZ */
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+#ifdef HAVE_ZIO
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+
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+static void decompress_zio (void *data)
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+{
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+ const char *what = (const char*)data;
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+ FILE *file;
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+
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+ file = fdzopen(dup (fileno (stdin)), "r", what);
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+ if (!file)
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+ return;
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+
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+ for (;;) {
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+ char buffer[4096];
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+ int r = fread(buffer, sizeof(char), sizeof(buffer), file);
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+ if (r <= 0)
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+ break;
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+ if (fwrite (buffer, 1, (size_t) r, stdout) < (size_t) r)
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+ break;
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+ }
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+
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+ fclose(file);
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+ return;
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+}
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+
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+#endif /* HAVE_ZIO */
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+
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extern man_sandbox *sandbox;
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pipeline *decompress_open (const char *filename)
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@@ -85,6 +115,37 @@ pipeline *decompress_open (const char *f
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if (stat (filename, &st) < 0 || S_ISDIR (st.st_mode))
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return NULL;
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+#ifdef HAVE_ZIO
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+ ext = strrchr (filename, '.');
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+ if (ext) {
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+ const char *opt;
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+ char *name;
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+
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+ if (STREQ (ext, ".gz"))
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+ opt = "g";
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+ else if (STREQ (ext, ".z"))
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+ opt = "z";
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+ else if (STREQ (ext, ".bz2"))
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+ opt = "b";
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+ else if (STREQ (ext, ".xz"))
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+ opt = "x";
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+ else if (STREQ (ext, ".lzma"))
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+ opt = "l";
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+ else if (STREQ (ext, ".Z"))
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+ opt = "Z";
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+ else
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+ goto nozio;
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+
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+ /* informational only; no shell quoting concerns */
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+ name = appendstr (NULL, "libzio < ", filename, NULL);
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+ cmd = pipecmd_new_function (name, &decompress_zio, NULL,
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+ opt);
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+ free (name);
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+ p = pipeline_new_commands (cmd, NULL);
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+ goto got_pipeline;
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+ }
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+#endif /* HAVE_ZIO */
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+
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#ifdef HAVE_LIBZ
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filename_len = strlen (filename);
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if (filename_len > 3 && STREQ (filename + filename_len - 3, ".gz")) {
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@@ -96,7 +157,11 @@ pipeline *decompress_open (const char *f
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}
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#endif /* HAVE_LIBZ */
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+#ifdef HAVE_ZIO
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+nozio:
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+#else
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ext = strrchr (filename, '.');
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+#endif /* HAVE_LIBZ */
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if (ext) {
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++ext;
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