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authorYimmon Zhuang <[email protected]>2015-10-14 15:37:20 +0800
committerYimmon Zhuang <[email protected]>2015-10-14 15:37:20 +0800
commitb33b3a6732c6b6a66bd5c44c615be56d66f4ed67 (patch)
tree47501412a3324e4c13b1238eeb913aae02b2024a /kaldi_decode/utils/parse_options.sh
parente39fb231f64ddc8b79a6eb5434f529aadb3165fe (diff)
support kaldi decoder
Diffstat (limited to 'kaldi_decode/utils/parse_options.sh')
-rwxr-xr-xkaldi_decode/utils/parse_options.sh97
1 files changed, 97 insertions, 0 deletions
diff --git a/kaldi_decode/utils/parse_options.sh b/kaldi_decode/utils/parse_options.sh
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+#!/bin/bash
+
+# Copyright 2012 Johns Hopkins University (Author: Daniel Povey);
+# Arnab Ghoshal, Karel Vesely
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
+# WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
+# MERCHANTABLITY OR NON-INFRINGEMENT.
+# See the Apache 2 License for the specific language governing permissions and
+# limitations under the License.
+
+
+# Parse command-line options.
+# To be sourced by another script (as in ". parse_options.sh").
+# Option format is: --option-name arg
+# and shell variable "option_name" gets set to value "arg."
+# The exception is --help, which takes no arguments, but prints the
+# $help_message variable (if defined).
+
+
+###
+### The --config file options have lower priority to command line
+### options, so we need to import them first...
+###
+
+# Now import all the configs specified by command-line, in left-to-right order
+for ((argpos=1; argpos<$#; argpos++)); do
+ if [ "${!argpos}" == "--config" ]; then
+ argpos_plus1=$((argpos+1))
+ config=${!argpos_plus1}
+ [ ! -r $config ] && echo "$0: missing config '$config'" && exit 1
+ . $config # source the config file.
+ fi
+done
+
+
+###
+### No we process the command line options
+###
+while true; do
+ [ -z "${1:-}" ] && break; # break if there are no arguments
+ case "$1" in
+ # If the enclosing script is called with --help option, print the help
+ # message and exit. Scripts should put help messages in $help_message
+ --help|-h) if [ -z "$help_message" ]; then echo "No help found." 1>&2;
+ else printf "$help_message\n" 1>&2 ; fi;
+ exit 0 ;;
+ --*=*) echo "$0: options to scripts must be of the form --name value, got '$1'"
+ exit 1 ;;
+ # If the first command-line argument begins with "--" (e.g. --foo-bar),
+ # then work out the variable name as $name, which will equal "foo_bar".
+ --*) name=`echo "$1" | sed s/^--// | sed s/-/_/g`;
+ # Next we test whether the variable in question is undefned-- if so it's
+ # an invalid option and we die. Note: $0 evaluates to the name of the
+ # enclosing script.
+ # The test [ -z ${foo_bar+xxx} ] will return true if the variable foo_bar
+ # is undefined. We then have to wrap this test inside "eval" because
+ # foo_bar is itself inside a variable ($name).
+ eval '[ -z "${'$name'+xxx}" ]' && echo "$0: invalid option $1" 1>&2 && exit 1;
+
+ oldval="`eval echo \\$$name`";
+ # Work out whether we seem to be expecting a Boolean argument.
+ if [ "$oldval" == "true" ] || [ "$oldval" == "false" ]; then
+ was_bool=true;
+ else
+ was_bool=false;
+ fi
+
+ # Set the variable to the right value-- the escaped quotes make it work if
+ # the option had spaces, like --cmd "queue.pl -sync y"
+ eval $name=\"$2\";
+
+ # Check that Boolean-valued arguments are really Boolean.
+ if $was_bool && [[ "$2" != "true" && "$2" != "false" ]]; then
+ echo "$0: expected \"true\" or \"false\": $1 $2" 1>&2
+ exit 1;
+ fi
+ shift 2;
+ ;;
+ *) break;
+ esac
+done
+
+
+# Check for an empty argument to the --cmd option, which can easily occur as a
+# result of scripting errors.
+[ ! -z "${cmd+xxx}" ] && [ -z "$cmd" ] && echo "$0: empty argument to --cmd option" 1>&2 && exit 1;
+
+
+true; # so this script returns exit code 0.