58 lines
2.1 KiB
Bash
58 lines
2.1 KiB
Bash
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#!/bin/bash
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# Download the list of company IDs from bluetooth.org and generate a diff which
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# can be applied to source tree to update bt_compidtostr(). Usage:
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#
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# 1) ./tools/update_compids.sh | git apply -p0
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# 2) Inspect changes to make sure they are sane
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# 3) git commit -m "lib: Update list of company identifiers" lib/bluetooth.c
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#
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# Requires html2text: http://www.mbayer.de/html2text/
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#
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set -e -u
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tmpdir=$(mktemp -d)
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trap "rm -rf $tmpdir" EXIT
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mkdir $tmpdir/lib
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cp lib/bluetooth.c $tmpdir/lib/bluetooth.c.orig
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cp lib/bluetooth.c $tmpdir/lib/bluetooth.c
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cd $tmpdir
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path=en-us/specification/assigned-numbers/company-identifiers
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# Use "iconv -c" to strip unwanted unicode characters
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# Fixups:
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# - strip <input> tags of type "checkbox" because html2text generates UTF-8 for
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# them in some distros even when using -ascii (e.g. Fedora)
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# - replace " " (non-breaking space) with whitespace manually, because
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# some versions incorrectly convert it into "\xC2\xA0"
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curl https://www.bluetooth.org/$path | iconv -c -f utf8 -t ascii | \
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sed '/<input.*type="checkbox"/d; s/ / /g' | \
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html2text -ascii -width 160 -o identifiers.txt >/dev/null
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# Some versions of html2text do not replace & (e.g. Fedora)
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sed -i 's/&/\&/g' identifiers.txt
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sed -n '/^const char \*bt_compidtostr(int compid)/,/^}/p' \
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lib/bluetooth.c > old.c
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echo -e 'const char *bt_compidtostr(int compid)\n{\n\tswitch (compid) {' > new.c
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cat identifiers.txt |
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perl -ne 'm/^(\d+)\s+0x[0-9a-f]+\s+(.*)/i &&
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print "\tcase $1:\n\t\treturn \"$2\";\n"' >> new.c
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if ! grep -q "return \"" new.c; then
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echo "ERROR: could not parse company IDs from bluetooth.org" >&2
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exit 1
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fi
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if [ -n "$(tr -d '[:print:]\t\n' < new.c)" ]; then
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echo -n "ERROR: invalid non-ASCII characters found while parsing" >&2
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echo -n " company IDs. Please identify offending sequence and fix" >&2
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echo " tools/update_compids.sh accordingly." >&2
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exit 1
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fi
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echo -e '\tcase 65535:\n\t\treturn "internal use";' >> new.c
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echo -e '\tdefault:\n\t\treturn "not assigned";\n\t}\n}' >> new.c
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diff -Naur old.c new.c | patch -sp0 lib/bluetooth.c
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diff -Naur lib/bluetooth.c.orig lib/bluetooth.c
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