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215 lines
7.4 KiB
Python
215 lines
7.4 KiB
Python
#!/usr/bin/env python
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###########################################################################
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# qstringfixup.py
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# ---------------
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# Date : October 2020
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# Copyright : (C) 2020 by Even Rouault
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# Email : even.rouault@spatialys.com
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###########################################################################
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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# DEALINGS IN THE SOFTWARE.
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###########################################################################
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# This script fixes several suboptimal uses of QStringLiteral where QLatin1String would be better
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# It is not automatically run yet.
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# Run it on whole code base with:
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# ../scripts/qstringfixup.sh --all
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# or on modified files only with:
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# ../scripts/qstringfixup.sh
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import re
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import sys
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lines = [l[0:-1] if l[-1] == '\n' else l for l in open(sys.argv[1]).readlines()]
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# Double quoted strings that only include ASCII characters
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string_literal = r"""(R?"(?:(?:\\['"\\nrt])|[\x00-\x21\x23-\x5B\x5D-\x7F])+?")"""
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# Single quoted ASCII character
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char_literal = r"""('(?:\\['"\\nrt]|[\x00-\x26\x28-\x5B\x5D-\x7F])')"""
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# Simple expression like foo or foo.bar() or foo.bar(baz, baw)
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simple_expr = r"""([a-zA-Z0-9_:<>]+(?:\.(?:[a-zA-Z0-9_]+\([^\(\)]*\)|[a-zA-Z0-9_]+))?)"""
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qsl = fr"""QStringLiteral\( {string_literal} \)"""
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# Find lines like " foo += QStringLiteral( "bla" ); // optional comment"
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pattern_plus_equal = re.compile(fr'^([ ]*)([^ ]+) \+= {qsl};([ ]*//.*)?$')
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# Find patterns like "...QString( tr( "foo" ) )..."
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pattern_qstring_tr = re.compile(fr"""(.*)QString\( tr\( {string_literal} \) \)(.*)""")
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# Find patterns like "...== QStringLiteral( "foo" ) something that is not like .arg()"
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pattern_equalequal_qsl = re.compile(r'(.*)(==|!=) ' + qsl + r'( \)| \|\|| &&| }|;| \?| ,)(.*)')
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# Find patterns like "...startsWith( QStringLiteral( "foo" ) )..."
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pattern_startswith_qsl = re.compile(fr'(.*)\.(startsWith|endsWith|indexOf|lastIndexOf|compare)\( {qsl} \)(.*)')
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# .replace( 'a' or simple_expr or qsl, QStringLiteral( "foo" ) )
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replace_char_qsl = re.compile(fr"""(.*)\.replace\( {char_literal}, {qsl} \)(.*)""")
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replace_str_qsl = re.compile(fr"""(.*)\.replace\( {string_literal}, {qsl} \)(.*)""")
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# Do not use that: if simple_expr is a QRegExp, there is no QString::replace(QRegExp, QLatin1String)
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# replace_simple_expr_qsl = re.compile(r"""(.*)\.replace\( {simple_expr}, {qsl} \)(.*)""".format(simple_expr=simple_expr, qsl=qsl))
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# .replace( QStringLiteral( "foo" ), QStringLiteral( "foo" ) )
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replace_qsl_qsl = re.compile(r"""(.*)\.replace\( {qsl}, {qsl} \)(.*)""".format(qsl=qsl))
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# .replace( QStringLiteral( "foo" ), something
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replace_qsl_something = re.compile(fr"""(.*)\.replace\( {qsl}, (.+)""")
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# .arg( QStringLiteral( "foo" ) )
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# note: QString QString::arg(QLatin1String a) added in QT 5.10, but using QLatin1String() will work with older too
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arg_qsl = re.compile(fr"""(.*)\.arg\( {qsl} \)(.*)""")
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# .join( QStringLiteral( "foo" ) )
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join = re.compile(fr"""(.*)\.join\( {qsl} \)(.*)""")
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# if QT >= 5.14 .compare would be ok
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qlatin1str_single_char = re.compile(r"""(.*)(.startsWith\(|.endsWith\(|.indexOf\(|.lastIndexOf\(|\+=) QLatin1String\( ("[^"]") \)(.*)""")
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def qlatin1char_or_string(x):
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""" x is a double quoted string """
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if len(x) == 3 and x[1] == "'":
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return "QLatin1Char( '\\'' )"
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elif len(x) == 3:
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return "QLatin1Char( '" + x[1] + "' )"
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elif len(x) == 4 and x[1] == "\\":
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return "QLatin1Char( '" + x[1:3] + "' )"
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else:
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return "QLatin1String( " + x + " )"
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i = 0
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while i < len(lines):
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line = lines[i]
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modified = False
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m = pattern_plus_equal.match(line)
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if m:
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g = m.groups()
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newline = g[0] + g[1] + ' += '
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newline += 'QLatin1String( ' + g[2] + ' );'
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if g[3]:
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newline += g[3]
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line = newline
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m = pattern_qstring_tr.match(line)
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if m:
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g = m.groups()
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newline = g[0] + 'tr( ' + g[1] + ' )'
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if g[2]:
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newline += g[2]
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line = newline
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while True:
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m = pattern_equalequal_qsl.match(line)
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if m and 'qgetenv' not in line and 'h.first' not in line:
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g = m.groups()
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newline = g[0] + g[1] + ' QLatin1String( ' + g[2] + ' )' + g[3]
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if g[4]:
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newline += g[4]
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line = newline
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else:
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break
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while True:
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m = pattern_startswith_qsl.match(line)
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if m:
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g = m.groups()
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newline = g[0] + '.' + g[1] + '( QLatin1String( ' + g[2] + ' ) )'
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if g[3]:
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newline += g[3]
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line = newline
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else:
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break
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while True:
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m = replace_char_qsl.match(line)
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if not m:
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m = replace_str_qsl.match(line)
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# if not m:
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# m = replace_simple_expr_qsl.match(line)
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if m:
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g = m.groups()
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newline = g[0] + '.replace( ' + g[1] + ', QLatin1String( ' + g[2] + ' ) )'
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if g[3]:
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newline += g[3]
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line = newline
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else:
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break
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while True:
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m = replace_qsl_qsl.match(line)
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if m:
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g = m.groups()
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newline = g[0] + '.replace( QLatin1String( ' + g[1] + ' ), QLatin1String( ' + g[2] + ' ) )'
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if g[3]:
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newline += g[3]
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line = newline
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else:
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break
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while True:
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m = replace_qsl_something.match(line)
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if m:
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g = m.groups()
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newline = g[0] + '.replace( QLatin1String( ' + g[1] + ' ), ' + g[2]
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line = newline
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else:
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break
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while True:
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m = arg_qsl.match(line)
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if m:
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g = m.groups()
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newline = g[0] + '.arg( QLatin1String( ' + g[1] + ') )'
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if g[2]:
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newline += g[2]
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line = newline
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else:
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break
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while True:
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m = join.match(line)
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if m:
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g = m.groups()
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newline = g[0] + '.join( ' + qlatin1char_or_string(g[1]) + ' )'
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if g[2]:
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newline += g[2]
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line = newline
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else:
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break
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while True:
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m = qlatin1str_single_char.match(line)
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if m:
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g = m.groups()
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newline = g[0] + g[1] + ' ' + qlatin1char_or_string(g[2])
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if g[3]:
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newline += g[3]
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line = newline
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else:
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break
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print(line)
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i += 1
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