comparison mercurial/windows.py @ 38724:02b5b5c1bba8

windows: replace single quote with double quote when translating to cmd.exe

Since cmd.exe doesn't understand single quotes, single quotes to prevent $var
expansion is basically unusable without this.  Single quote isn't allowed in a
path name, so it seems unlikely to come up otherwise.

38723:f9b2d996ffa5

    >>> shelltocmdexe(b'cmd $var1 ${var2} %var3% $missing ${missing} %missing%',
    ...               e)
    'cmd %var1% %var2% %var3% $missing ${missing} %missing%'
    >>> # Single quote prevents expansion, as does \$ escaping
    >>> shelltocmdexe(b"cmd '$var1 ${var2} %var3%' \$var1 \${var2} \\", e)
    "cmd '$var1 ${var2} %var3%' $var1 ${var2} \\"
    >>> # $$ is not special. %% is not special either, but can be the end and
    >>> # start of consecutive variables
    >>> shelltocmdexe(b"cmd $$ %% %var1%%var2%", e)
    'cmd $$ %% %var1%%var2%'
    >>> # No double substitution
    >>> shelltocmdexe(b"$var1 %var1%", {b'var1': b'%var2%', b'var2': b'boom'})
    '%var1% %var1%'
    """
    if b'$' not in path:
        return path

    varchars = pycompat.sysbytes(string.ascii_letters + string.digits) + b'_-'

    res = b''

        if c == b'\'':   # no expansion within single quotes
            path = path[index + 1:]
            pathlen = len(path)
            try:
                index = path.index(b'\'')
                res += b'\'' + path[:index + 1]
            except ValueError:
                res += c + path
                index = pathlen - 1
        elif c == b'%':  # variable
            path = path[index + 1:]

38724:02b5b5c1bba8

    >>> shelltocmdexe(b'cmd $var1 ${var2} %var3% $missing ${missing} %missing%',
    ...               e)
    'cmd %var1% %var2% %var3% $missing ${missing} %missing%'
    >>> # Single quote prevents expansion, as does \$ escaping
    >>> shelltocmdexe(b"cmd '$var1 ${var2} %var3%' \$var1 \${var2} \\", e)
    'cmd "$var1 ${var2} %var3%" $var1 ${var2} \\'
    >>> # $$ is not special. %% is not special either, but can be the end and
    >>> # start of consecutive variables
    >>> shelltocmdexe(b"cmd $$ %% %var1%%var2%", e)
    'cmd $$ %% %var1%%var2%'
    >>> # No double substitution
    >>> shelltocmdexe(b"$var1 %var1%", {b'var1': b'%var2%', b'var2': b'boom'})
    '%var1% %var1%'
    """
    if not any(c in path for c in b"$'"):
        return path

    varchars = pycompat.sysbytes(string.ascii_letters + string.digits) + b'_-'

    res = b''

        if c == b'\'':   # no expansion within single quotes
            path = path[index + 1:]
            pathlen = len(path)
            try:
                index = path.index(b'\'')
                res += b'"' + path[:index] + b'"'
            except ValueError:
                res += c + path
                index = pathlen - 1
        elif c == b'%':  # variable
            path = path[index + 1:]