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unicode database compression, step 2: 

- fixed attributions
- moved decomposition data to a separate table, in preparation
  for step 3 (which won't happen before 2.0 final, promise!)
- use relative paths in the generator script

I have a lot more stuff in the works for 2.1, but let's leave
that for another day...
This commit is contained in:
Fredrik Lundh 2000-09-25 08:07:06 +00:00
parent 2101348830
commit cfcea49218
5 changed files with 4613 additions and 4330 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
Modules/unicodedata.c
View File

@ -4,17 +4,16 @@
Data was extracted from the Unicode 3.0 UnicodeData.txt file.
Written by Marc-Andre Lemburg (mal@lemburg.com).
Written by Marc-Andre Lemburg (mal@lemburg.com).
Modified for Python 2.0 by Fredrik Lundh (fredrik@pythonware.com)
Copyright (c) Corporation for National Research Initiatives.
Copyright (c) Corporation for National Research Initiatives.
------------------------------------------------------------------------ */
#include "Python.h"
#include "unicodedatabase.h"
#define unicode_db _PyUnicode_Database_GetRecord
/* --- Module API --------------------------------------------------------- */
static PyObject *
@ -134,15 +133,9 @@ unicodedata_category(PyObject *self,
"need a single Unicode character as parameter");
goto onError;
}
index = (int)unicode_db((int)*PyUnicode_AS_UNICODE(v))->category;
if (index < 0 ||
index > sizeof(_PyUnicode_CategoryNames) /
sizeof(_PyUnicode_CategoryNames[0])) {
PyErr_Format(PyExc_SystemError,
"category index out of range: %i",
index);
goto onError;
}
index = (int) _PyUnicode_Database_GetRecord(
(int) *PyUnicode_AS_UNICODE(v)
)->category;
return PyString_FromString(_PyUnicode_CategoryNames[index]);
onError:
@ -164,15 +157,9 @@ unicodedata_bidirectional(PyObject *self,
"need a single Unicode character as parameter");
goto onError;
}
index = (int)unicode_db((int)*PyUnicode_AS_UNICODE(v))->bidirectional;
if (index < 0 ||
index > sizeof(_PyUnicode_CategoryNames) /
sizeof(_PyUnicode_CategoryNames[0])) {
PyErr_Format(PyExc_SystemError,
"bidirectional index out of range: %i",
index);
goto onError;
}
index = (int) _PyUnicode_Database_GetRecord(
(int) *PyUnicode_AS_UNICODE(v)
)->bidirectional;
return PyString_FromString(_PyUnicode_BidirectionalNames[index]);
onError:
@ -194,7 +181,9 @@ unicodedata_combining(PyObject *self,
"need a single Unicode character as parameter");
goto onError;
}
value = (int)unicode_db((int)*PyUnicode_AS_UNICODE(v))->combining;
value = (int) _PyUnicode_Database_GetRecord(
(int) *PyUnicode_AS_UNICODE(v)
)->combining;
return PyInt_FromLong(value);
onError:
@ -216,7 +205,9 @@ unicodedata_mirrored(PyObject *self,
"need a single Unicode character as parameter");
goto onError;
}
value = (int)unicode_db((int)*PyUnicode_AS_UNICODE(v))->mirrored;
value = (int) _PyUnicode_Database_GetRecord(
(int) *PyUnicode_AS_UNICODE(v)
)->mirrored;
return PyInt_FromLong(value);
onError:
@ -238,10 +229,9 @@ unicodedata_decomposition(PyObject *self,
"need a single Unicode character as parameter");
goto onError;
}
value = unicode_db((int)*PyUnicode_AS_UNICODE(v))->decomposition;
if (value == NULL)
return PyString_FromString("");
else
value = _PyUnicode_Database_GetDecomposition(
(int) *PyUnicode_AS_UNICODE(v)
);
return PyString_FromString(value);
onError:

8803
Modules/unicodedata_db.h
View File

File diff suppressed because it is too large Load Diff

20
Modules/unicodedatabase.c
View File

@ -4,9 +4,10 @@
Data was extracted from the Unicode 3.0 UnicodeData.txt file.
Written by Marc-Andre Lemburg (mal@lemburg.com).
Written by Marc-Andre Lemburg (mal@lemburg.com).
Rewritten for Python 2.0 by Fredrik Lundh (fredrik@pythonware.com)
Copyright (c) Corporation for National Research Initiatives.
Copyright (c) Corporation for National Research Initiatives.
------------------------------------------------------------------------ */
@ -29,3 +30,18 @@ _PyUnicode_Database_GetRecord(int code)
}
return &_PyUnicode_Database_Records[index];
}
const char *
_PyUnicode_Database_GetDecomposition(int code)
{
int index;
if (code < 0 || code >= 65536)
index = 0;
else {
index = decomp_index1[(code>>DECOMP_SHIFT)];
index = decomp_index2[(index<<DECOMP_SHIFT)+
(code&((1<<DECOMP_SHIFT)-1))];
}
return decomp_data[index];
}

12
Modules/unicodedatabase.h
View File

@ -4,9 +4,10 @@
Data was extracted from the Unicode 3.0 UnicodeData.txt file.
Written by Marc-Andre Lemburg (mal@lemburg.com).
Written by Marc-Andre Lemburg (mal@lemburg.com).
Modified for Python 2.0 by Fredrik Lundh (fredrik@pythonware.com)
Copyright (c) Corporation for National Research Initiatives.
Copyright (c) Corporation for National Research Initiatives.
------------------------------------------------------------------------ */
@ -19,15 +20,14 @@ typedef struct {
const unsigned char bidirectional; /* index into
_PyUnicode_BidirectionalNames */
const unsigned char mirrored; /* true if mirrored in bidir mode */
const char *decomposition; /* pointer to the decomposition
string or NULL */
} _PyUnicode_DatabaseRecord;
/* --- Unicode category names --------------------------------------------- */
extern const char *_PyUnicode_CategoryNames[32];
extern const char *_PyUnicode_BidirectionalNames[21];
extern const char *_PyUnicode_CategoryNames[];
extern const char *_PyUnicode_BidirectionalNames[];
/* --- Unicode Database --------------------------------------------------- */
extern const _PyUnicode_DatabaseRecord *_PyUnicode_Database_GetRecord(int ch);
extern const char *_PyUnicode_Database_GetDecomposition(int ch);

62
Tools/unicode/makeunicodedata.py
View File

@ -1,14 +1,19 @@
#
# makeunidb.py -- generate a compact version of the unicode property
# database (unicodedatabase.h)
# generate a compact version of the unicode property database
#
# history:
# 2000-09-24 fl created (based on bits and pieces from unidb)
# 2000-09-25 fl merged tim's splitbin fixes, separate decomposition table
#
# written by Fredrik Lundh (fredrik@pythonware.com), September 2000
#
import sys
SCRIPT = sys.argv[0]
VERSION = "1.0"
VERSION = "1.1"
UNICODE_DATA = "c:/pythonware/modules/unidb/etc/UnicodeData-Latest.txt"
UNICODE_DATA = "../UnicodeData-Latest.txt"
CATEGORY_NAMES = [ "Cn", "Lu", "Ll", "Lt", "Mn", "Mc", "Me", "Nd",
"Nl", "No", "Zs", "Zl", "Zp", "Cc", "Cf", "Cs", "Co", "Cn", "Lm",
@ -24,13 +29,12 @@ def maketable():
unicode = UnicodeData(UNICODE_DATA)
# extract unicode properties
dummy = (0, 0, 0, 0, "NULL")
dummy = (0, 0, 0, 0)
table = [dummy]
cache = {0: dummy}
index = [0] * len(unicode.chars)
DECOMPOSITION = [""]
# 1) database properties
for char in unicode.chars:
record = unicode.table[char]
if record:
@ -39,12 +43,8 @@ def maketable():
combining = int(record[3])
bidirectional = BIDIRECTIONAL_NAMES.index(record[4])
mirrored = record[9] == "Y"
if record[5]:
decomposition = '"%s"' % record[5]
else:
decomposition = "NULL"
item = (
category, combining, bidirectional, mirrored, decomposition
category, combining, bidirectional, mirrored
)
# add entry to index and item tables
i = cache.get(item)
@ -53,8 +53,26 @@ def maketable():
table.append(item)
index[char] = i
# FIXME: we really should compress the decomposition stuff
# (see the unidb utilities for one way to do this)
# 2) decomposition data
# FIXME: <fl> using the encoding stuff from unidb would save
# another 50k or so, but I'll leave that for 2.1...
decomp_data = [""]
decomp_index = [0] * len(unicode.chars)
for char in unicode.chars:
record = unicode.table[char]
if record:
if record[5]:
try:
i = decomp_data.index(record[5])
except ValueError:
i = len(decomp_data)
decomp_data.append(record[5])
else:
i = 0
decomp_index[char] = i
FILE = "unicodedata_db.h"
@ -65,7 +83,7 @@ def maketable():
print "/* a list of unique database records */"
print "const _PyUnicode_DatabaseRecord _PyUnicode_Database_Records[] = {"
for item in table:
print " {%d, %d, %d, %d, %s}," % item
print " {%d, %d, %d, %d}," % item
print "};"
print
@ -82,6 +100,12 @@ def maketable():
print " NULL"
print "};"
print "static const char *decomp_data[] = {"
for name in decomp_data:
print " \"%s\"," % name
print " NULL"
print "};"
# split index table
index1, index2, shift = splitbins(index)
@ -90,6 +114,14 @@ def maketable():
Array("index1", index1).dump(sys.stdout)
Array("index2", index2).dump(sys.stdout)
# split index table
index1, index2, shift = splitbins(decomp_index)
print "/* same, for the decomposition data */"
print "#define DECOMP_SHIFT", shift
Array("decomp_index1", index1).dump(sys.stdout)
Array("decomp_index2", index2).dump(sys.stdout)
sys.stdout = sys.__stdout__
# --------------------------------------------------------------------