KDE 4.2 PyKDE API Reference
KShell Namespace Reference
from PyKDE4.kdecore.KShell import *
Detailed Description
Emulates some basic system shell functionality.
- See also:
- KStringHandler
Enumerations | |
| Errors | { NoError, BadQuoting, FoundMeta } |
| Option | { NoOptions, TildeExpand, AbortOnMeta } |
Functions | |
| QString | joinArgs (QStringList args) |
| QString | quoteArg (QString arg) |
| QStringList | splitArgs (QString cmd, KShell.Options flags=KShell.NoOptions, KShell.Errors err=0) |
| QString | tildeExpand (QString path) |
Enumeration Documentation
| Errors |
Success.
- Enumerator:
-
NoError = 0 BadQuoting FoundMeta
| Option |
Flags for splitArgs().
- Enumerator:
-
NoOptions = 0 TildeExpand = 1 AbortOnMeta = 2
Function Documentation
| QString joinArgs | ( | QStringList | args | |
| ) |
Quotes and joins args together according to system shell rules.
If the output is fed back into splitArgs(), the AbortOnMeta flag needs to be used on Windows. On *NIX, no such requirement exists.
See quoteArg() for more info.
- Parameters:
-
args a list of strings to quote and join
- Returns:
- a command suitable for shell execution
Quotes arg according to system shell rules.
This function can be used to quote an argument string such that the shell processes it properly. This is e.g. necessary for user-provided file names which may contain spaces or quotes. It also prevents expansion of wild cards and environment variables.
On *NIX, the output is POSIX shell compliant. On Windows, it is compliant with the argument splitting code of the Microsoft C runtime and the cmd shell used together. Occurrences of the percent sign are replaced with \%PERCENT_SIGN% to prevent spurious variable expansion; related KDE functions are prepared for this.
- Parameters:
-
arg the argument to quote
- Returns:
- the quoted argument
| QStringList splitArgs | ( | QString | cmd, | |
| KShell.Options | flags=KShell.NoOptions, | |||
| KShell.Errors | err=0 | |||
| ) |
Splits cmd according to system shell word splitting and quoting rules. Can optionally perform tilde expansion and/or abort if it finds shell meta characters it cannot process.
On *NIX the behavior is based on the POSIX shell and bash: - Whitespace splits tokens - The backslash quotes the following character - A string enclosed in single quotes is not split. No shell meta characters are interpreted. - A string enclosed in double quotes is not split. Within the string, the backslash quotes shell meta characters - if it is followed by a "meaningless" character, the backslash is output verbatim. - A string enclosed in $'' is not split. Within the string, the backslash has a similar meaning to the one in C strings. Consult the bash manual for more information.
On Windows, the behavior is defined by the Microsoft C runtime. Qt and many other implementations comply with this standard, but many do not. - Whitespace splits tokens - A string enclosed in double quotes is not split - 2N double quotes within a quoted string yield N literal quotes. This is not documented on MSDN. - Backslashes have special semantics iff they are followed by a double quote: - 2N backslashes + double quote => N backslashes and begin/end quoting - 2N+1 backslashes + double quote => N backslashes + literal quote
If AbortOnMeta is used on Windows, this function applies cmd shell semantics before proceeding with word splitting: - Cmd ignores all special chars between double quotes. Note that the quotes are not removed at this stage - the tokenization rules described above still apply. - The circumflex is the escape char for everything including itself.
- Parameters:
-
cmd the command to split flags operation flags, see Option err if not NULL, a status code will be stored at the pointer target, see Errors
- Returns:
- a list of unquoted words or an empty list if an error occurred
Performs tilde expansion on path. Interprets "~/path" and "~user/path". If the path starts with an escaped tilde ("\~" on UNIX, "^~" on Windows), the escape char is removed and the path is returned as is.
- Parameters:
-
path the path to tilde-expand
- Returns:
- the expanded path
