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132 lines
4.2 KiB
Batchfile
132 lines
4.2 KiB
Batchfile
/*
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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SET environment variables
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First optional parameter:
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; parameters are considered parts of a path variable, semicolons are
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appended to each element if not already present
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-D parameters are properties for Java or Makefile etc., -D will be
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prepended and the parameters will be separated by a space
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=D the same as above but equal sign is not required
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, parameters should be comma separated in the environment variable
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- parameters should be separated by the next parameter
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Other values mean that the first parameter is missing and the environment
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variable will be set to the space separated parameters
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Second parameter: name of the environment variable
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Next parameters: values
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; implies that the equal sign is considered a part of the parameter and is
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not interpreted
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-D requires parameters in the form name=value. If the equal sign is not found,
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the parameters are changed to name=expanded_name
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Other options have optional equal sign. If it is found, only the part after
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the equal sign will be oprionally expanded.
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If the parameter is the minus sign, the next parameter will not be expanded.
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If the parameter is a single dot, it will be replaced with the value of the
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environment variable as it existed before envset was invoked.
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For other parameters the batch looks for the environment variable with the
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same name (in uppercase). If it is found, it forms the expanded_name. If
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the environment variable with such a name does not exist, the expanded_name
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will hold the parameter name without case conversion.
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*/
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parse arg mode envar args
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equal = 0
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sep = ' '
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/* Parse command line parameters */
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select
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when mode='-' then do
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sep = envar
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parse var args envar args
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end
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when mode=';' then do
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sep = ''
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equal = -1
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end
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when mode='-D' then equal = 1
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when mode='=D' then mode = '-D'
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when mode=',' then sep = ','
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otherwise
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args = envar args
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envar = mode
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mode = ''
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end
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env = 'OS2ENVIRONMENT'
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envar = translate(envar)
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orig = value(envar,,env)
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newval = ''
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expand = 1
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/* for each parameter... */
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do i = 1 to words(args)
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if expand > 0 & word(args, i) = '-' then expand = 0
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else call addval word(args, i)
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end
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/* Optionally enclose path variable by quotes */
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if mode = ';' & pos(' ', newval) > 0 then newval = '"' || newval || '"'
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/* Set the new value, 'SET' cannot be used since it does not allow '=' */
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x = value(envar, newval, env)
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exit 0
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addval: procedure expose sep equal orig expand newval mode env
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parse arg var
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if var = '.' then expvar = orig
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else do
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if equal >= 0 then do
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parse var var name '=' val
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if val = '' then var = name
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else var = val
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end
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if expand = 0 then expvar = var
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else expvar = value(translate(var),,env)
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if expvar = '' then expvar = var
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if equal >= 0 then do
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if val = '' then do
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parse var expvar key '=' val
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if val <> '' then name = key
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else do
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if equal > 0 then val = key
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else name = key
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end
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end
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else val = expvar
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if pos(' ', val) > 0 | pos('=', val) > 0 then val = '"' || val || '"'
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if val = '' then expvar = name
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else expvar = name || '=' || val
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end
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if mode = '-D' then expvar = '-D' || expvar
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if mode = ';' then do
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if right(expvar, 1) <> ';' then expvar = expvar || ';'
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end
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end
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if newval = '' then newval = expvar
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else newval = newval || sep || expvar
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expand = 1
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return
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