gentoo-overlay/media-gfx/iscan/files/iscan-3.62.0-tests-tesseract.patch

commit 9ce60e8df3b613950c483f0ae5ec772afc329104
Author: Olaf Meeuwissen <paddy-hack@member.fsf.org>
Date:   Fri Jun 21 22:20:30 2019 +0900

    Fix tesseract command-line invocation.  Re #78

diff --git a/filters/get-text-orientation b/filters/get-text-orientation
index 847f2c6..6f0978c 100755
--- a/filters/get-text-orientation
+++ b/filters/get-text-orientation
@@ -47,26 +47,14 @@ if test $? != 0; then
     exit 1
 fi
 
-tmpfile=$(mktemp -q .reorient.XXX)
-trap "rm -f $tmpfile" 0 1 2 15
-
 case "$engine" in
     */tesseract|tesseract)
 
-        #  Notwithstanding what the manual page says, tesseract
-        #  doesn't support reading from standard input with the
-        #  `-psm 0` option.  We stuff incoming image data into a
-        #  temporary file to work around this limitation.
-        #  See https://github.com/tesseract-ocr/tesseract/issues/85
-
-        cat - > $tmpfile
+        #  Tesseract 3.03 outputs the results we want to standard
+        #  error; Tesseract 3.04 dumps it on standard output.  We
+        #  want it on the latter.
 
-        #  We don't care about the "regular" tesseract output so
-        #  divert that to /dev/null.  The output that we do care
-        #  about ends up on standard error, but our caller looks
-        #  for it on standard output.  Redirect to handle that.
-
-        $engine $tmpfile /dev/null -psm 0 -l osd 2>&1
+        $engine - - -psm 0 -l osd 2>&1
         ;;
 
     */ocr-engine-getrotate)
@@ -74,6 +62,9 @@ case "$engine" in
         #  The ocr-engine-getrotate utility expects an uncompressed
         #  BMP image.
 
+        tmpfile=$(mktemp -q .reorient.XXX)
+        trap "rm -f $tmpfile" 0 1 2 15
+
         $convert - -compress None bmp3:$tmpfile
         $engine $tmpfile
         ;;

commit 56f1d8ed51cc7140b961ef8ab8c7501f69d87fd5
Author: Olaf Meeuwissen <paddy-hack@member.fsf.org>
Date:   Mon Oct 21 12:41:20 2019 +0900

    Fix get-text-orientation for newer Tesseract versions.  Fixes #86

diff --git a/filters/get-text-orientation b/filters/get-text-orientation
index 6f0978c..eb64e4b 100755
--- a/filters/get-text-orientation
+++ b/filters/get-text-orientation
@@ -51,10 +51,21 @@ case "$engine" in
     */tesseract|tesseract)
 
         #  Tesseract 3.03 outputs the results we want to standard
-        #  error; Tesseract 3.04 dumps it on standard output.  We
-        #  want it on the latter.
+        #  error; Tesseract 3.04 dumps it on standard output.  So
+        #  do later versions.  We want it on the latter.
+        #  Command-line options changed in 3.05.00.
 
-        $engine - - -psm 0 -l osd 2>&1
+        version=$($engine --version 2>&1 | sed -n 's/.*tesseract *//p')
+
+        case "$version" in
+            3.0[34].* )
+                $engine - - -psm 0 -l osd 2>&1
+                ;;
+
+            3.05.* | [45].* )
+                $engine - - --psm 0 -l osd 2>&1
+                ;;
+        esac
         ;;
 
     */ocr-engine-getrotate)
commit 9d5edc4c52e5a6b59d61a43ddcc13353b82992f5
Author: Olaf Meeuwissen <paddy-hack@member.fsf.org>
Date:   Sun Jun 23 17:22:22 2019 +0900

    Fix reorientation logic for newer Tesseract versions.  Re #78

diff --git a/filters/reorient.cpp b/filters/reorient.cpp
index e0c1dc1..60c5173 100644
--- a/filters/reorient.cpp
+++ b/filters/reorient.cpp
@@ -483,6 +483,13 @@ reorient::finalize (const context& ctx)
         log::alert
           (format ("unexpected document orientation: %1% degrees")
            % degrees);
+
+      if (engine_ == "tesseract"
+          && !tesseract_version_before_("3.04")) {
+        // Orientation reporting changed direct with 3.04.  See #78
+        /**/ if ( 90 == degrees) rv.orientation (context::left_bottom);
+        else if (270 == degrees) rv.orientation (context::right_top);
+      }
     }
   return rv;
 }