gitea/legado
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优化

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This commit is contained in:
kunfei 2022-01-28 21:10:59 +08:00
parent f0a038a668
commit e5a630f54f
1 changed files with 15 additions and 21 deletions
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36
app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.java
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@ -535,19 +535,17 @@ public class QueryTTF {
} else if (fmt == 4) {
CmapFormat4 tab = (CmapFormat4) table;
if (code > tab.endCode[tab.endCode.length - 1]) return 0;
// 二分法查找数值索引
int start = 0, middle, end = tab.endCode.length - 1;
while (start + 1 < end) {
middle = (start + end) / 2;
if (tab.endCode[middle] <= code) start = middle;
else end = middle;
for (int i = 0; i < tab.endCode.length; i++) {
if (tab.endCode[i] == code) {
if (tab.endCode[i] < code) ++i;
if (code < tab.startCode[i]) return 0;
if (tab.idRangeOffset[i] != 0) {
glyfID = tab.glyphIdArray[code - tab.startCode[i] + (tab.idRangeOffset[i] >> 1) - (tab.idRangeOffset.length - i)];
} else glyfID = code + tab.idDelta[i];
glyfID &= 0xFFFF;
break;
}
}
if (tab.endCode[start] < code) ++start;
if (code < tab.startCode[start]) return 0;
if (tab.idRangeOffset[start] != 0) {
glyfID = tab.glyphIdArray[code - tab.startCode[start] + (tab.idRangeOffset[start] >> 1) - (tab.idRangeOffset.length - start)];
} else glyfID = code + tab.idDelta[start];
glyfID &= 0xFFFF;
} else if (fmt == 6) {
CmapFormat6 tab = (CmapFormat6) table;
int index = code - tab.firstCode;
@ -556,15 +554,11 @@ public class QueryTTF {
} else if (fmt == 12) {
CmapFormat12 tab = (CmapFormat12) table;
if (code > tab.groups.get(tab.numGroups - 1).getMiddle()) return 0;
// 二分法查找数值索引
int start = 0, middle, end = tab.numGroups - 1;
while (start + 1 < end) {
middle = (start + end) / 2;
if (tab.groups.get(middle).getLeft() <= code) start = middle;
else end = middle;
}
if (tab.groups.get(start).getLeft() <= code && code <= tab.groups.get(start).getMiddle()) {
glyfID = tab.groups.get(start).getRight() + code - tab.groups.get(start).getLeft();
for (int i = 0; i < tab.numGroups; i++) {
if (tab.groups.get(i).getLeft() <= code && code <= tab.groups.get(i).getMiddle()) {
glyfID = tab.groups.get(i).getRight() + code - tab.groups.get(i).getLeft();
break;
}
}
}
return glyfID;