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Change mbbisearch to return the character range

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Add a width field to mbinterval and have mbbisearch return a
pointer to the found range rather than just bool for success.
A future commit will add another width besides zero, and this
will allow that to use the same search.

Reviewed by Jacob Champion
Discussion: https://www.postgresql.org/message-id/CAFBsxsGOCpzV7c-f3a8ADsA1n4uZ%3D8puCctQp%2Bx7W0vgkv%3Dw%2Bg%40mail.gmail.com
This commit is contained in:
John Naylor
2021-08-20 11:10:17 -04:00
parent eb0d0d2c73
commit 78ab944cd4
3 changed files with 208 additions and 203 deletions
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4
src/common/unicode/generate-unicode_width_table.pl
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@@ -17,7 +17,7 @@ my $count = 0;
print
"/* generated by src/common/unicode/generate-unicode_width_table.pl, do not edit */\n\n";
print "static const struct mbinterval combining[] = {\n";
print "static const struct mbinterval wcwidth[] = {\n";
foreach my $line (<ARGV>)
{
@@ -40,7 +40,7 @@ foreach my $line (<ARGV>)
# not a combining character, print out previous range if any
if (defined($range_start))
{
printf "\t{0x%04X, 0x%04X},\n", $range_start, $prev_codepoint;
printf "\t{0x%04X, 0x%04X, 0},\n", $range_start, $prev_codepoint;
$range_start = undef;
}
}