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Fix #2022847 [ValueError](https://bugs.launchpad.net/calibre/+bug/2022847)

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Kovid Goyal 2023-06-04 18:53:11 +05:30
parent 1317d39592
commit c895bb59ce
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1 changed files with 13 additions and 7 deletions
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18
src/calibre/ebooks/__init__.py
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@ -6,7 +6,12 @@ Code for the conversion of ebook formats and the reading of metadata
from various formats. from various formats.
''' '''
import os, re, numbers, sys import numbers
import os
import re
import sys
from contextlib import suppress
from calibre import prints from calibre import prints
from calibre.ebooks.chardet import xml_to_unicode from calibre.ebooks.chardet import xml_to_unicode
@ -48,7 +53,7 @@ def return_raster_image(path):
def extract_cover_from_embedded_svg(html, base, log): def extract_cover_from_embedded_svg(html, base, log):
from calibre.ebooks.oeb.base import XPath, SVG, XLINK from calibre.ebooks.oeb.base import SVG, XLINK, XPath
from calibre.utils.xml_parse import safe_xml_fromstring from calibre.utils.xml_parse import safe_xml_fromstring
root = safe_xml_fromstring(html) root = safe_xml_fromstring(html)
@ -114,7 +119,7 @@ def render_html_svg_workaround(path_to_html, log, width=590, height=750, root=''
def render_html_data(path_to_html, width, height, root=''): def render_html_data(path_to_html, width, height, root=''):
from calibre.ptempfile import TemporaryDirectory from calibre.ptempfile import TemporaryDirectory
from calibre.utils.ipc.simple_worker import fork_job, WorkerError from calibre.utils.ipc.simple_worker import WorkerError, fork_job
result = {} result = {}
def report_error(text=''): def report_error(text=''):
@ -173,14 +178,15 @@ def unit_convert(value, base, font, dpi, body_font_size=12):
' Return value in pts' ' Return value in pts'
if isinstance(value, numbers.Number): if isinstance(value, numbers.Number):
return value return value
try: with suppress(Exception):
return float(value) * 72.0 / dpi return float(value) * 72.0 / dpi
except:
pass
result = value result = value
m = UNIT_RE.match(value) m = UNIT_RE.match(value)
if m is not None and m.group(1): if m is not None and m.group(1):
try:
value = float(m.group(1)) value = float(m.group(1))
except ValueError:
value = 0
unit = m.group(2) unit = m.group(2)
if unit == '%': if unit == '%':
result = (value / 100.0) * base result = (value / 100.0) * base