libraries/tre: Add Python 3 support.

Signed-off-by: Benjamin Trigona-Harany <bosth@alumni.sfu.ca>

2 files changed, 298 insertions, 10 deletions

diff --git a/libraries/tre/python3.patch b/libraries/tre/python3.patch
new file mode 100644
index 0000000000000..fb94678b197e5
--- /dev/null
+++ b/libraries/tre/python3.patch
@@ -0,0 +1,278 @@
+--- tre-python.c	2009-09-19 07:38:42.000000000 -0700
++++ /home/ben/Downloads/tre-python.c	2018-03-15 23:32:07.540064053 -0700
+@@ -86,9 +86,9 @@
+   TreFuzzynessObject *self = (TreFuzzynessObject*)obj;
+   PyObject *o;
+ 
+-  o = PyString_FromFormat("%s(delcost=%d,inscost=%d,maxcost=%d,subcost=%d,"
++  o = PyUnicode_FromFormat("%s(delcost=%d,inscost=%d,maxcost=%d,subcost=%d,"
+ 			  "maxdel=%d,maxerr=%d,maxins=%d,maxsub=%d)",
+-			  self->ob_type->tp_name, self->ap.cost_del,
++			  Py_TYPE(self)->tp_name, self->ap.cost_del,
+ 			  self->ap.cost_ins, self->ap.max_cost,
+ 			  self->ap.cost_subst, self->ap.max_del,
+ 			  self->ap.max_err, self->ap.max_ins,
+@@ -118,8 +118,7 @@
+ };
+ 
+ static PyTypeObject TreFuzzynessType = {
+-  PyObject_HEAD_INIT(NULL)
+-  0,			        /* ob_size */
++  PyVarObject_HEAD_INIT(NULL, 0)
+   TRE_MODULE ".Fuzzyness",	/* tp_name */
+   sizeof(TreFuzzynessObject),	/* tp_basicsize */
+   0,			        /* tp_itemsize */
+@@ -193,7 +192,7 @@
+ }
+ 
+ static PyObject *
+-PyTreMatch_groupi(PyObject *obj, int gn)
++PyTreMatch_groupi(PyObject *obj, Py_ssize_t gn)
+ {
+   TreMatchObject *self = (TreMatchObject*)obj;
+   PyObject *result;
+@@ -220,7 +219,7 @@
+   PyObject *result;
+   long gn;
+ 
+-  gn = PyInt_AsLong(grpno);
++  gn = PyLong_AsLong(grpno);
+ 
+   if (PyErr_Occurred())
+     return NULL;
+@@ -277,8 +276,7 @@
+ };
+ 
+ static PyTypeObject TreMatchType = {
+-  PyObject_HEAD_INIT(NULL)
+-  0,			        /* ob_size */
++  PyVarObject_HEAD_INIT(NULL, 0)
+   TRE_MODULE ".Match",		/* tp_name */
+   sizeof(TreMatchObject),	/* tp_basicsize */
+   0,			        /* tp_itemsize */
+@@ -337,9 +335,18 @@
+   char *targ;
+   size_t tlen;
+ 
+-  if (!PyArg_ParseTuple(args, "SO!|i:match", &pstring, &TreFuzzynessType,
++  if (PyTuple_Size(args) > 0 && PyUnicode_Check(PyTuple_GetItem(args, 0)))
++    {
++      if (!PyArg_ParseTuple(args, "UO!|i:search", &pstring, &TreFuzzynessType,
+ 			&fz, &eflags))
+-    return NULL;
++      return NULL;
++    }
++  else
++    {
++      if (!PyArg_ParseTuple(args, "SO!|i:search", &pstring, &TreFuzzynessType,
++			&fz, &eflags))
++      return NULL;
++    }
+ 
+   mo = newTreMatchObject();
+   if (mo == NULL)
+@@ -347,22 +354,35 @@
+ 
+   nsub = self->rgx.re_nsub + 1;
+   pm = PyMem_New(regmatch_t, nsub);
+-  if (pm != NULL)
+-    {
+-      mo->am.nmatch = nsub;
+-      mo->am.pmatch = pm;
+-    }
+-  else
++  if (!pm)
+     {
+-      /* XXX */
+       Py_DECREF(mo);
+-      return NULL;
++      return PyErr_NoMemory();
+     }
+ 
+-  targ = PyString_AsString(pstring);
+-  tlen = PyString_Size(pstring);
++  mo->am.nmatch = nsub;
++  mo->am.pmatch = pm;
+ 
+-  rc = tre_reganexec(&self->rgx, targ, tlen, &mo->am, fz->ap, eflags);
++  if (PyUnicode_Check(pstring))
++    {
++      Py_ssize_t len = PyUnicode_GetSize(pstring);
++      wchar_t *buf = calloc(sizeof(wchar_t), len);
++      if(!buf)
++        {
++          Py_DECREF(mo);
++          return PyErr_NoMemory();
++        }
++      PyUnicode_AsWideChar(pstring, buf, len);
++      rc = tre_regawnexec(&self->rgx, buf, len, &mo->am, fz->ap, eflags);
++      free(buf);
++    }
++  else
++    {
++      targ = PyBytes_AsString(pstring);
++      tlen = PyBytes_Size(pstring);
++
++      rc = tre_reganexec(&self->rgx, targ, tlen, &mo->am, fz->ap, eflags);
++    }
+ 
+   if (PyErr_Occurred())
+     {
+@@ -392,7 +412,7 @@
+ 
+ static PyMethodDef TrePattern_methods[] = {
+   { "search", (PyCFunction)PyTrePattern_search, METH_VARARGS,
+-    "try to match against given string, returning " TRE_MODULE ".match object "
++    "try to search in the given string, returning " TRE_MODULE ".match object "
+     "or None on failure" },
+   {NULL, NULL}
+ };
+@@ -411,8 +431,7 @@
+ }
+ 
+ static PyTypeObject TrePatternType = {
+-  PyObject_HEAD_INIT(NULL)
+-  0,			        /* ob_size */
++  PyVarObject_HEAD_INIT(NULL, 0)
+   TRE_MODULE ".Pattern",	/* tp_name */
+   sizeof(TrePatternObject),	/* tp_basicsize */
+   0,			        /* tp_itemsize */
+@@ -445,7 +464,7 @@
+ };
+ 
+ static TrePatternObject *
+-newTrePatternObject(PyObject *args)
++newTrePatternObject(void)
+ {
+   TrePatternObject *self;
+ 
+@@ -460,19 +479,43 @@
+ PyTre_ncompile(PyObject *self, PyObject *args)
+ {
+   TrePatternObject *rv;
+-  char *pattern;
++  PyObject *upattern = NULL;
++  char *pattern = NULL;
+   int pattlen;
+   int cflags = 0;
+   int rc;
+ 
+-  if (!PyArg_ParseTuple(args, "s#|i:compile", &pattern, &pattlen, &cflags))
+-    return NULL;
++  if (PyTuple_Size(args) > 0 && PyUnicode_Check(PyTuple_GetItem(args, 0)))
++    {
++      if (!PyArg_ParseTuple(args, "U|i:compile", &upattern, &cflags))
++        return NULL;
++    }
++  else
++    {
++      if (!PyArg_ParseTuple(args, "s#|i:compile", &pattern, &pattlen, &cflags))
++        return NULL;
++    }
+ 
+-  rv = newTrePatternObject(args);
++  rv = newTrePatternObject();
+   if (rv == NULL)
+     return NULL;
+ 
+-  rc = tre_regncomp(&rv->rgx, (char*)pattern, pattlen, cflags);
++  if (upattern != NULL)
++    {
++      Py_ssize_t len = PyUnicode_GetSize(upattern);
++      wchar_t *buf = calloc(sizeof(wchar_t), len);
++      if(!buf)
++        {
++          Py_DECREF(rv);
++          return PyErr_NoMemory();
++        }
++      PyUnicode_AsWideChar(upattern, buf, len);
++      rc = tre_regwncomp(&rv->rgx, buf, len, cflags);
++      free(buf);
++    }
++  else
++    rc = tre_regncomp(&rv->rgx, (char*)pattern, pattlen, cflags);
++
+   if (rc != REG_OK)
+     {
+       if (!PyErr_Occurred())
+@@ -491,9 +534,8 @@
+   { NULL, NULL }
+ };
+ 
+-static char *tre_doc =
+-"Python module for TRE library\n\nModule exports "
+-"the only function: compile";
++
++#define tre_doc "Python module for TRE library\n\nModule exports the only function: compile"
+ 
+ static struct _tre_flags {
+   char *name;
+@@ -510,40 +552,57 @@
+   { NULL, 0 }
+ };
+ 
++
++static struct PyModuleDef moduledef = {
++  PyModuleDef_HEAD_INIT,
++  TRE_MODULE ".Module",   /* m_name */
++  tre_doc,             /* m_doc */
++  -1,                  /* m_size */
++  tre_methods,         /* m_methods */
++  NULL,                /* m_reload */
++  NULL,                /* m_traverse */
++  NULL,                /* m_clear */
++  NULL,                /* m_free */
++};
++
++
+ PyMODINIT_FUNC
+-inittre(void)
++PyInit_tre(void)
+ {
+   PyObject *m;
+   struct _tre_flags *fp;
+ 
+   if (PyType_Ready(&TreFuzzynessType) < 0)
+-    return;
++    return NULL;
+   if (PyType_Ready(&TreMatchType) < 0)
+-    return;
++    return NULL;
+   if (PyType_Ready(&TrePatternType) < 0)
+-    return;
++    return NULL;
+ 
+   /* Create the module and add the functions */
+-  m = Py_InitModule3(TRE_MODULE, tre_methods, tre_doc);
++
++  m = PyModule_Create (&moduledef);
++
+   if (m == NULL)
+-    return;
++    return NULL;
+ 
+   Py_INCREF(&TreFuzzynessType);
+   if (PyModule_AddObject(m, "Fuzzyness", (PyObject*)&TreFuzzynessType) < 0)
+-    return;
++    return NULL;
+   Py_INCREF(&TreMatchType);
+   if (PyModule_AddObject(m, "Match", (PyObject*)&TreMatchType) < 0)
+-    return;
++    return NULL;
+   Py_INCREF(&TrePatternType);
+   if (PyModule_AddObject(m, "Pattern", (PyObject*)&TrePatternType) < 0)
+-    return;
++    return NULL;
+   ErrorObject = PyErr_NewException(TRE_MODULE ".Error", NULL, NULL);
+   Py_INCREF(ErrorObject);
+   if (PyModule_AddObject(m, "Error", ErrorObject) < 0)
+-    return;
++    return NULL;
+ 
+   /* Insert the flags */
+   for (fp = tre_flags; fp->name != NULL; fp++)
+     if (PyModule_AddIntConstant(m, fp->name, fp->val) < 0)
+-      return;
++      return NULL;
++  return m;
+ }
diff --git a/libraries/tre/tre.SlackBuild b/libraries/tre/tre.SlackBuild
index 504818c7c179b..54560e0c0c2c6 100644
--- a/libraries/tre/tre.SlackBuild
+++ b/libraries/tre/tre.SlackBuild
@@ -29,7 +29,7 @@ TAG=${TAG:-_SBo}
 
 if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
-    i?86) ARCH=i486 ;;
+    i?86) ARCH=i586 ;;
     arm*) ARCH=arm ;;
        *) ARCH=$( uname -m ) ;;
   esac
@@ -40,8 +40,8 @@ TMP=${TMP:-/tmp/SBo}
 PKG=$TMP/package-$PRGNAM
 OUTPUT=${OUTPUT:-/tmp}
 
-if [ "$ARCH" = "i486" ]; then
-  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
   LIBDIRSUFFIX=""
 elif [ "$ARCH" = "i686" ]; then
   SLKCFLAGS="-O2 -march=i686 -mtune=i686"
@@ -60,14 +60,14 @@ rm -rf $PKG
 mkdir -p $TMP $PKG $OUTPUT
 cd $TMP
 rm -rf $PRGNAM-$VERSION
-tar xvf $CWD/$PRGNAM-$VERSION.tar.?z*
+tar xvf $CWD/$PRGNAM-$VERSION.tar.bz2
 cd $PRGNAM-$VERSION
 chown -R root:root .
 find -L . \
- \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 -o -perm 511 \) \
- -exec chmod 755 {} \; -o \
- \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
- -exec chmod 644 {} \;
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
 CFLAGS="$SLKCFLAGS" \
 ./configure \
@@ -78,14 +78,24 @@ CFLAGS="$SLKCFLAGS" \
   --mandir=/usr/man \
   --build=$ARCH-slackware-linux
 
-make
 make install-strip DESTDIR=$PKG
 
+cp -r python python3
 cd python
   CFLAGS="-I$PKG/usr/include" \
   LDFLAGS="-L$PKG/usr/lib$LIBDIRSUFFIX" \
     python setup.py install --root=$PKG
-cd ..
+cd -
+
+if $(python3 -c 'import sys' 2>/dev/null); then
+  cd python3
+    # Python 3 support from https://github.com/ahomansikka/tre/commit/d6a0220
+    patch -p0 < $CWD/python3.patch
+    CFLAGS="-I$PKG/usr/include" \
+    LDFLAGS="-L$PKG/usr/lib$LIBDIRSUFFIX" \
+      python3 setup.py install --root=$PKG
+  cd -
+fi
 
 find $PKG/usr/man -type f -exec gzip -9 {} \;
 for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done