Add lzma loader

configure.ac

@@ -210,6 +210,7 @@ loader_check_bz2() {
 }
 
 EC_LOADER_CHECK(BZ2,  auto, bzip2, loader_check_bz2)
+EC_LOADER_CHECK(LZMA, auto, liblzma)
 EC_LOADER_CHECK(ZLIB, auto, zlib)
 
 EC_LOADER_CHECK(ID3,  auto, id3tag)
@@ -277,6 +278,7 @@ echo "  TIFF....................: $tiff_ok"
 echo "  WEBP....................: $webp_ok"
 echo " Decompressors"
 echo "  BZIP2...................: $bz2_ok"
+echo "  LZMA(XZ)................: $lzma_ok"
 echo "  ZLIB....................: $zlib_ok"
 echo " Containers"
 echo "  ID3.....................: $id3_ok"

src/lib/loaders.c

@@ -50,6 +50,9 @@ static const char  *const ext_xpm[] = { "xpm", NULL };
 #ifdef BUILD_BZ2_LOADER
 static const char  *const ext_bz2[] = { "bz2", NULL };
 #endif
+#ifdef BUILD_LZMA_LOADER
+static const char  *const ext_lzma[] = { "xz", "lzma", NULL };
+#endif
 #ifdef BUILD_ZLIB_LOADER
 static const char  *const ext_zlib[] = { "gz", NULL };
 #endif
@@ -86,6 +89,9 @@ static const KnownLoader loaders_known[] = {
 #ifdef BUILD_BZ2_LOADER
    {"bz2", ext_bz2},
 #endif
+#ifdef BUILD_LZMA_LOADER
+   {"lzma", ext_lzma},
+#endif
 #ifdef BUILD_ZLIB_LOADER
    {"zlib", ext_zlib},
 #endif

src/modules/loaders/Makefile.am

@@ -33,6 +33,9 @@ endif
 if BUILD_BZ2_LOADER
 pkg_LTLIBRARIES += bz2.la
 endif
+if BUILD_LZMA_LOADER
+pkg_LTLIBRARIES += lzma.la
+endif
 if BUILD_ZLIB_LOADER
 pkg_LTLIBRARIES += zlib.la
 endif
@@ -123,6 +126,12 @@ bz2_la_LDFLAGS       = -module -avoid-version
 bz2_la_LIBADD        = $(BZ2_LIBS) $(top_builddir)/src/lib/libImlib2.la
 bz2_la_LIBTOOLFLAGS  = --tag=disable-static
 
+lzma_la_SOURCES      = loader_lzma.c decompress_load.c
+lzma_la_CPPFLAGS     = $(LZMA_CFLAGS) $(AM_CPPFLAGS)
+lzma_la_LDFLAGS      = -module -avoid-version
+lzma_la_LIBADD       = $(LZMA_LIBS) $(top_builddir)/src/lib/libImlib2.la
+lzma_la_LIBTOOLFLAGS = --tag=disable-static
+
 zlib_la_SOURCES      = loader_zlib.c decompress_load.c
 zlib_la_CPPFLAGS     = $(ZLIB_CFLAGS) $(AM_CPPFLAGS)
 zlib_la_LDFLAGS      = -module -avoid-version

src/modules/loaders/loader_lzma.c

@@ -0,0 +1,65 @@
+#include "loader_common.h"
+
+#include <lzma.h>
+
+#define OUTBUF_SIZE 16484
+
+static int
+uncompress_file(const void *fdata, unsigned int fsize, int dest)
+{
+   int                 ok;
+   lzma_stream         strm = LZMA_STREAM_INIT;
+   lzma_ret            ret;
+   uint8_t             outbuf[OUTBUF_SIZE];
+   unsigned int        bytes;
+
+   ok = 0;
+
+   ret = lzma_auto_decoder(&strm, UINT64_MAX, 0);
+   if (ret != LZMA_OK)
+      return ok;
+
+   strm.next_in = fdata;
+   strm.avail_in = fsize;
+
+   for (;;)
+     {
+        strm.next_out = outbuf;
+        strm.avail_out = sizeof(outbuf);
+
+        ret = lzma_code(&strm, 0);
+
+        if (ret != LZMA_OK && ret != LZMA_STREAM_END)
+           goto quit;
+
+        bytes = sizeof(outbuf) - strm.avail_out;
+        if (write(dest, outbuf, bytes) != bytes)
+           goto quit;
+
+        if (ret == LZMA_STREAM_END)
+           break;
+     }
+
+   ok = 1;
+
+ quit:
+   lzma_end(&strm);
+
+   return ok;
+}
+
+static const char  *const list_formats[] = { "xz", "lzma" };
+
+int
+load2(ImlibImage * im, int load_data)
+{
+
+   return decompress_load(im, load_data, list_formats, ARRAY_SIZE(list_formats),
+                          uncompress_file);
+}
+
+void
+formats(ImlibLoader * l)
+{
+   __imlib_LoaderSetFormats(l, list_formats, ARRAY_SIZE(list_formats));
+}

test/test_load.cpp

@@ -3,6 +3,8 @@
 #include <Imlib2.h>
 #include <fcntl.h>
 
+#include "config.h"
+
 int                 debug = 0;
 
 #define D(...)  if (debug) printf(__VA_ARGS__)
@@ -18,7 +20,6 @@ int                 debug = 0;
 static const char  *const pfxs[] = {
    "argb",
    "bmp",
-   "ff.bz2",                    // bz2
    "ff",
    "gif",
    "ico",
@@ -33,7 +34,15 @@ static const char  *const pfxs[] = {
    "webp",
    "xbm",
    "xpm",
+#ifdef BUILD_BZ2_LOADER
+   "ff.bz2",                    // bz2
+#endif
+#ifdef BUILD_ZLIB_LOADER
    "ff.gz",                     // zlib
+#endif
+#ifdef BUILD_LZMA_LOADER
+   "ff.xz",                     // lzma
+#endif
 };
 #define N_PFX (sizeof(pfxs) / sizeof(char*))
 

test/test_load_2.cpp

@@ -4,6 +4,8 @@
 #include <fcntl.h>
 #include <zlib.h>
 
+#include "config.h"
+
 int                 debug = 0;
 
 #define D(...) if (debug) printf(__VA_ARGS__)
@@ -24,7 +26,15 @@ static tii_t        tii[] = {
    { "icon-64.argb",		1153555547 },
    { "icon-64.bmp",		1153555547 },
    { "icon-64.ff",		1153555547 },
+#ifdef BUILD_BZ2_LOADER
    { "icon-64.ff.bz2",		1153555547 },
+#endif
+#ifdef BUILD_ZLIB_LOADER
+   { "icon-64.ff.gz",		1153555547 },
+#endif
+#ifdef BUILD_LZMA_LOADER
+   { "icon-64.ff.xz",		1153555547 },
+#endif
    { "icon-64.gif",		1768448874 },
    { "icon-64.ico",		1153555547 },
    { "icon-64.ilbm",		1153555547 },