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font-patcher: Fix crash if no roman characters
[why] When we can not detect the cell width, for example because there are no glyphs in the range of extrended-roman that we examine, the width will be zero and that will result in a crash later on (on rescaling). [how] Just abort if height or width are zero or negative. Related: #1460 Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
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@ -6,7 +6,7 @@
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from __future__ import absolute_import, print_function, unicode_literals
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# Change the script version when you edit this script:
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script_version = "4.8.2"
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script_version = "4.8.3"
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version = "3.1.1"
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projectName = "Nerd Fonts"
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@ -1212,7 +1212,7 @@ class font_patcher:
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'height': self.sourceFont.descent + self.sourceFont.ascent,
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}
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our_btb = self.sourceFont.descent + self.sourceFont.ascent
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elif self.font_dim['height'] < 0:
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if self.font_dim['height'] <= 0:
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logger.critical("Can not detect sane font height")
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sys.exit(1)
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@ -1266,6 +1266,9 @@ class font_patcher:
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if self.font_dim['width'] < self.font_dim['xmax']:
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logger.debug("Font has negative right side bearing in extended glyphs")
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self.font_dim['xmax'] = self.font_dim['width'] # In fact 'xmax' is never used
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if self.font_dim['width'] <= 0:
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logger.critical("Can not detect sane font width")
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sys.exit(1)
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logger.debug("Final font cell dimensions %d w x %d h", self.font_dim['width'], self.font_dim['height'])
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self.xavgwidth.append(self.args.xavgwidth)
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