mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-01 01:51:24 +00:00
ca1ea69972
Upstream changes:
* Tesseract 4.00.00alpha:
* Version parsing: Ignore suffix (so '4.00.00alpha' == (4, 0, 0))
* Libtesseract: Load libtesseract.so.4 instead of libtesseract.so.3
if available
* Support for Tesseract 3.05.00:
* Builders: Split field 'tess_conf' into 'tess_flags' and 'tess_conf'
* Libtesseract: If available, use
TessBaseAPIDetectOrientationScript() instead of
TessBaseAPIDetectOS
* Libtesseract:
* Workaround: Prevents possible segfault in image_to_string() when
the target language is not available
Full upstream change log can be found at:
https://github.com/openpaperwork/pyocr/blob/b006123d1d002711b9/ChangeLog
The tesseract.patch for supporting Tesseract version 3.05.00 has been
applied upstream and we can safely drop it.
We now use substituteInPlace in conjunction with a patch to insert the
relevant store paths instead of sed, so it's less fragile whenever we
have upstream changes in handling of these paths.
I've tested this by reverting 48a941e29f and applying a build
fix patch of Cuneiform 1.1.0 from Arch Linux, because right now
Cuneiform is an experimental version that can't be fixed on behalf of
pyocr (the reason is that pyocr needs to get a list of languages, which
doesn't work in that version anymore).
In addition to that I've successfully built paperwork-backend which by
now is the one package which depends on pyocr. However, I didn't do
runtime tests of Paperwork.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Cc: @7c6f434c
112 lines
3.4 KiB
Diff
112 lines
3.4 KiB
Diff
diff --git a/src/pyocr/cuneiform.py b/src/pyocr/cuneiform.py
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index a461d92..1f2b914 100644
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--- a/src/pyocr/cuneiform.py
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+++ b/src/pyocr/cuneiform.py
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@@ -27,13 +27,9 @@ from . import error
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from . import util
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-# CHANGE THIS IF CUNEIFORM IS NOT IN YOUR PATH, OR IS NAMED DIFFERENTLY
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-CUNEIFORM_CMD = 'cuneiform'
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+CUNEIFORM_CMD = '@NIX_CUNEIFORM_CMD@'
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-CUNEIFORM_DATA_POSSIBLE_PATHS = [
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- "/usr/local/share/cuneiform",
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- "/usr/share/cuneiform",
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-]
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+CUNEIFORM_DATA_POSSIBLE_PATHS = ['@NIX_CUNEIFORM_DATA@']
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LANGUAGES_LINE_PREFIX = "Supported languages: "
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LANGUAGES_SPLIT_RE = re.compile("[^a-z]")
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diff --git a/src/pyocr/libtesseract/tesseract_raw.py b/src/pyocr/libtesseract/tesseract_raw.py
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index b4e7bda..47505f7 100644
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--- a/src/pyocr/libtesseract/tesseract_raw.py
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+++ b/src/pyocr/libtesseract/tesseract_raw.py
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@@ -1,55 +1,13 @@
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import ctypes
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import logging
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import os
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-import sys
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from ..error import TesseractError
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logger = logging.getLogger(__name__)
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-TESSDATA_PREFIX = os.getenv('TESSDATA_PREFIX', None)
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-libnames = []
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-
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-if getattr(sys, 'frozen', False):
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- # Pyinstaller integration
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- libnames += [os.path.join(sys._MEIPASS, "libtesseract-4.dll")]
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- libnames += [os.path.join(sys._MEIPASS, "libtesseract-3.dll")]
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- tessdata = os.path.join(sys._MEIPASS, "data")
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- if not os.path.exists(os.path.join(tessdata, "tessdata")):
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- logger.warning(
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- "Running from container, but no tessdata ({}) found !".format(
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- tessdata
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- )
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- )
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- else:
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- TESSDATA_PREFIX = tessdata
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-
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-
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-if sys.platform[:3] == "win":
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- libnames += [
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- # Jflesch> Don't they have the equivalent of LD_LIBRARY_PATH on
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- # Windows ?
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- "../vs2010/DLL_Release/libtesseract302.dll",
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- "libtesseract302.dll",
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- "C:\\Program Files (x86)\\Tesseract-OCR\\libtesseract-4.dll",
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- "C:\\Program Files (x86)\\Tesseract-OCR\\libtesseract-3.dll",
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- ]
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-else:
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- libnames += [
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- "libtesseract.so.4",
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- "libtesseract.so.3",
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- ]
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-
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-
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-g_libtesseract = None
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-
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-for libname in libnames:
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- try:
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- g_libtesseract = ctypes.cdll.LoadLibrary(libname)
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- break
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- except OSError:
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- pass
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+g_libtesseract = ctypes.cdll.LoadLibrary('@NIX_LIBTESSERACT_PATH@')
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class PageSegMode(object):
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@@ -326,12 +284,11 @@ def init(lang=None):
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try:
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if lang:
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lang = lang.encode("utf-8")
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- prefix = None
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- if TESSDATA_PREFIX:
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- prefix = TESSDATA_PREFIX.encode("utf-8")
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+ prefix = os.getenv('TESSDATA_PREFIX', '@NIX_TESSDATA_PREFIX@')
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+ os.environ['TESSDATA_PREFIX'] = prefix
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g_libtesseract.TessBaseAPIInit3(
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ctypes.c_void_p(handle),
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- ctypes.c_char_p(prefix),
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+ ctypes.c_char_p(prefix.encode('utf-8')),
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ctypes.c_char_p(lang)
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)
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g_libtesseract.TessBaseAPISetVariable(
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diff --git a/src/pyocr/tesseract.py b/src/pyocr/tesseract.py
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index c935881..7139ffe 100755
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--- a/src/pyocr/tesseract.py
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+++ b/src/pyocr/tesseract.py
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@@ -31,8 +31,7 @@ from .builders import DigitBuilder # backward compatibility
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from .error import TesseractError # backward compatibility
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from .util import digits_only
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-# CHANGE THIS IF TESSERACT IS NOT IN YOUR PATH, OR IS NAMED DIFFERENTLY
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-TESSERACT_CMD = 'tesseract.exe' if os.name == 'nt' else 'tesseract'
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+TESSERACT_CMD = '@NIX_TESSERACT_CMD@'
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TESSDATA_EXTENSION = ".traineddata"
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