Andy Kopra
37b6ba1c4f
Typographic transforms (---, quote pairs, ~) no longer touch verbatim text: @c/@code/@source_listing content and ^'...'^ spans show exactly the characters written. "^" before any punctuation character quotes it in every target (the apostrophe excepted: ^' opens a literal span), with the new :resolve option on @@@target declaring per-target renderings. The ^UUUU^ code-point form accepts 4-6 hex digits, the full Unicode range. The html output and transform spellings are polyglot (XML-valid), in preparation for an EPUB target. New suites: transform_test, character_test (engine), typography_test (SKS). (from dev 07ce5ea86a0a)
83 lines
2.9 KiB
Python
83 lines
2.9 KiB
Python
import pprint
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import re
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import kutil
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def unescape_ktesc(s):
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"""Resolve KTESC escape markers back to original characters.
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Use this for argument values used programmatically (filenames, etc.)."""
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def replace(match):
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hex_chars = match.group(1)
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result = ''
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for i in range(0, len(hex_chars), 4):
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result += chr(int(hex_chars[i:i+4], 16))
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return result
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return re.sub(r'KTESC([0-9a-f]+)KTESC', replace, s)
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def escape_ktesc(s):
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"""A KTESC marker for the characters of s -- the mirror of
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Target::escape_marker() in mac/target.cpp (4 lowercase hex digits per
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byte). The marker is inert through every re-read and through the
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target's typographic transform pass, and decodes back to the characters
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at final escape resolution (ktesc_resolve)."""
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return 'KTESC' + ''.join(f'{ord(c):04x}' for c in s) + 'KTESC'
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# The characters the SKS targets' typographic transforms act on: the
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# hyphen runs (-- and ---), the quote conventions (` ' `` ''), and ~.
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# Verbatim text (@c, @code, @source_listing) must reach the output exactly
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# as written, so the code klammers hide each of these as a KTESC marker --
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# a transform source can then never match -- and the markers decode after
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# the transform pass has run.
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# SYNC: the transform tables of the html and txt targets in
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# sks/target/target.k. A transform built from a new character needs it
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# added here, or verbatim text will show the transformed form.
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TYPOGRAPHIC_CHARS = "-'`~"
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def hide_typographic(s):
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"""Hide the typographically active characters of s as KTESC markers so
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the target's transform pass cannot change verbatim text."""
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for c in TYPOGRAPHIC_CHARS:
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s = s.replace(c, escape_ktesc(c))
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return s
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class Klammer_base:
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def __init__(self, K):
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#args = {k:escape(v) for k, v in K.__dict__.items()
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args = {k:v for k, v in K.__dict__.items()
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if not k.startswith('__')}
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for key in args:
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setattr(self, key, args[key])
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#setattr(self, "_klammer_name", klammer_name)
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#pprint.pprint(self.__dict__)
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def html(self):
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#return '[{}: HTML]'.format(self.__class__.__name__)
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return None
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def tex(self):
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#return '[{}: LaTeX]'.format(self.__class__.__name__)
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return None
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def txt(self):
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#return '[{}: Plain text]'.format(self.__class__.__name__)
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return None
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def show(self, label=""):
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if label:
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print(label)
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pprint.pprint(self.__dict__)
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def __str__(self):
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result = None
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if self.K_target == 'html':
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result = self.html()
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elif self.K_target in {'tex', 'pdf'}:
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result = kutil.escape(self.tex())
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elif self.K_target == 'txt':
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result = self.txt()
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if result is None:
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#print(self.__dict__)
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raise Exception(
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f'Target "{self.K_target}" is undefined for klammer "@{self.K_klammer}"')
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return result
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