Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 46 insertions, 0 deletions

diff --git a/tests/avocado/tesseract_utils.py b/tests/avocado/tesseract_utils.py
new file mode 100644
index 000000000..72cd9ab79
--- /dev/null
+++ b/tests/avocado/tesseract_utils.py
@@ -0,0 +1,46 @@
+# ...
+#
+# Copyright (c) 2019 Philippe Mathieu-Daudé <f4bug@amsat.org>
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or
+# later. See the COPYING file in the top-level directory.
+
+import re
+import logging
+
+from avocado.utils import process
+from avocado.utils.path import find_command, CmdNotFoundError
+
+def tesseract_available(expected_version):
+    try:
+        find_command('tesseract')
+    except CmdNotFoundError:
+        return False
+    res = process.run('tesseract --version')
+    try:
+        version = res.stdout_text.split()[1]
+    except IndexError:
+        version = res.stderr_text.split()[1]
+    return int(version.split('.')[0]) == expected_version
+
+    match = re.match(r'tesseract\s(\d)', res)
+    if match is None:
+        return False
+    # now this is guaranteed to be a digit
+    return int(match.groups()[0]) == expected_version
+
+
+def tesseract_ocr(image_path, tesseract_args='', tesseract_version=3):
+    console_logger = logging.getLogger('tesseract')
+    console_logger.debug(image_path)
+    if tesseract_version == 4:
+        tesseract_args += ' --oem 1'
+    proc = process.run("tesseract {} {} stdout".format(tesseract_args,
+                                                       image_path))
+    lines = []
+    for line in proc.stdout_text.split('\n'):
+        sline = line.strip()
+        if len(sline):
+            console_logger.debug(sline)
+            lines += [sline]
+    return lines