blob: 8e1fb58a73788e92028fd8a581eab82c9dfa1c08 [file] [log] [blame]
# Copyright (C) 2010 The Android Open Source Project
#
# 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
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# A nawk/gawk script used to extract the value of min. SDK version from an
# application's manifest (i.e. AndroidManifest.xml). Usage:
#
# awk -f <this-script> AndroidManifest.xml
#
BEGIN {
MIN_SDK_VERSION = "";
while ( xml_event() ) {
# simply extract the 'android:minSdkVersion' attribute value from
# the first <manifest><uses-sdk> element we find.
if ( XML_TYPE == "BEGIN" && XML_TAG == "USES-SDK" &&
XML_RPATH == "USES-SDK/MANIFEST/" ) {
MIN_SDK_VERSION = XML_ATTR["android:minsdkversion"];
break;
}
}
print MIN_SDK_VERSION;
}
#
# the following is copied directly from xml.awk - see this file for
# usage and implementation details.
#
function xml_event () {
RS=">";
XML_TAG=XML_TYPE="";
split("", XML_ATTR);
while ( 1 ) {
if (_xml_closing) { # delayed direct tag closure
XML_TAG = _xml_closing;
XML_TYPE = "END";
_xml_closing = "";
_xml_exit(XML_TAG);
return 1;
}
if (getline <= 0) return 0; # read new input line
_xml_p = index($0, "<"); # get start marker
if (_xml_p == 0) return 0; # end of file (or malformed input)
$0 = substr($0, _xml_p) # remove anything before '<'
# ignore CData / Comments / Processing instructions / Declarations
if (_xml_in_section("<!\\[[Cc][Dd][Aa][Tt][Aa]\\[", "]]") ||
_xml_in_section("<!--", "--") ||
_xml_in_section("<\\?", "\\?") ||
_xml_in_section("<!", "")) {
continue;
}
if (substr($0, 1, 2) == "</") { # is it a closing tag ?
XML_TYPE = "END";
$0 = substr($0, 3);
} else { # nope, it's an opening one
XML_TYPE = "BEGIN";
$0 = substr($0, 2);
}
XML_TAG = $0
sub("[ \n\t/].*$", "", XML_TAG); # extract tag name
XML_TAG = toupper(XML_TAG); # uppercase it
if ( XML_TAG !~ /^[A-Z][-+_.:0-9A-Z]*$/ ) # validate it
_xml_panic("Invalid tag name: " XML_TAG);
if (XML_TYPE == "BEGIN") { # update reverse path
_xml_enter(XML_TAG);
} else {
_xml_exit(XML_TAG);
}
sub("[^ \n\t]*[ \n\t]*", "", $0); # get rid of tag and spaces
while ($0) { # process attributes
if ($0 == "/") { # deal with direct closing tag, e.g. </foo>
_xml_closing = XML_TAG; # record delayed tag closure.
break
}
_xml_attrib = $0;
sub(/=.*$/,"",_xml_attrib); # extract attribute name
sub(/^[^=]*/,"",$0); # remove it from record
_xml_attrib = tolower(_xml_attrib);
if ( _xml_attrib !~ /^[a-z][-+_0-9a-z:]*$/ ) # validate it
_xml_panic("Invalid attribute name: " _xml_attrib);
if (substr($0,1,2) == "=\"") { # value is ="something"
_xml_value = substr($0,3);
sub(/".*$/,"",_xml_value);
sub(/^="[^"]*"/,"",$0);
} else if (substr($0,1,2) == "='") { # value is ='something'
_xml_value = substr($0,3);
sub(/'.*$/,"",_xml_value);
sub(/^='[^']*'/,"",$0);
} else {
_xml_panic("Invalid attribute value syntax for " _xml_attrib ": " $0);
}
XML_ATTR[_xml_attrib] = _xml_value; # store attribute name/value
sub(/^[ \t\n]*/,"",$0); # get rid of remaining leading spaces
}
return 1; # now return, XML_TYPE/TAG/ATTR/RPATH are set
}
}
function _xml_panic (msg) {
print msg > "/dev/stderr"
exit(1)
}
function _xml_in_section (sec_begin, sec_end) {
if (!match( $0, "^" sec_begin )) return 0;
while (!match($0, sec_end "$")) {
if (getline <= 0) _xml_panic("Unexpected EOF: " ERRNO);
}
return 1;
}
function _xml_enter (tag) {
XML_RPATH = tag "/" XML_RPATH;
}
function _xml_exit (tag) {
_xml_p = index(XML_RPATH, "/");
_xml_expected = substr(XML_RPATH, 1, _xml_p-1);
if (_xml_expected != XML_TAG)
_xml_panic("Unexpected close tag: " XML_TAG ", expecting " _xml_expected);
XML_RPATH = substr(XML_RPATH, _xml_p+1);
}