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Fix search in pdf a containing some UTF-32 characters (bug 1820909)

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Some chars were supposed to have a length equals to 1 but UTF-32 chars
can be longuer.
This commit is contained in:
Calixte Denizet 2023-03-09 14:13:28 +01:00
parent a0ef5a4ae1
commit 07b094729e
6 changed files with 66 additions and 5 deletions
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15
web/pdf_find_controller.js
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@ -289,21 +289,26 @@ function normalize(text) {
// "X-\n" is removed because an hyphen at the end of a line
// with not a space before is likely here to mark a break
// in a word.
// The \n isn't in the original text so here y = i, n = 1 and o = 2.
positions.push([i - shift + 1, 1 + shift]);
// If X is encoded with UTF-32 then it can have a length greater than 1.
// The \n isn't in the original text so here y = i, n = X.len - 2 and
// o = X.len - 1.
const len = p5.length - 2;
positions.push([i - shift + len, 1 + shift]);
shift += 1;
shiftOrigin += 1;
eol += 1;
return p5.charAt(0);
return p5.slice(0, -2);
}
if (p6) {
// An ideographic at the end of a line doesn't imply adding an extra
// white space.
positions.push([i - shift + 1, shift]);
// A CJK can be encoded in UTF-32, hence their length isn't always 1.
const len = p6.length - 1;
positions.push([i - shift + len, shift]);
shiftOrigin += 1;
eol += 1;
return p6.charAt(0);
return p6.slice(0, -1);
}
if (p7) {