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Fixes #1219, Increase BibTeX read buffer and read only initial 1MB

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A 1.5MB RIS file now goes through BibTeX detection in about 3 seconds instead of...longer. I'm not sure the limit really needs to be 1MB, either.
This commit is contained in:
Dan Stillman 2008-12-16 23:43:50 +00:00
parent b5f3448304
commit 0f990781f1
1 changed files with 31 additions and 16 deletions
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47
translators/BibTeX.js
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@ -8,32 +8,47 @@
"maxVersion":"",
"priority":200,
"inRepository":true,
"lastUpdated":"2008-11-23 21:30:00"
"lastUpdated":"2008-12-16 23:13:33"
}
Zotero.configure("dataMode", "block");
Zotero.addOption("exportCharset", "UTF-8");
function detectImport() {
var maxChars = 1048576; // 1MB
var inComment = false;
var block = "";
var read;
var buffer = "";
var chr = "";
var charsRead = 0;
var re = /^\s*@[a-zA-Z]+[\(\{]/;
var lines_read = 0;
while(read = Zotero.read(1)) {
if(read == "%") {
// read until next newline
block = "";
while((read = Zotero.read(1)) && read != "\r" && read != "\n") {}
} else if((read == "\n" || read == "\r") && block) {
// check if this is a BibTeX entry
if(re.test(block)) {
return true;
}
while((buffer = Zotero.read(4096)) && charsRead < maxChars) {
Zotero.debug("Scanning " + buffer.length + " characters for BibTeX");
charsRead += buffer.length;
for (var i=0; i<buffer.length; i++) {
chr = buffer[i];
block = "";
} else if(" \n\r\t".indexOf(read) == -1) {
block += read;
if (inComment && chr != "\r" && chr != "\n") {
continue;
}
inComment = false;
if(chr == "%") {
// read until next newline
block = "";
inComment = true;
} else if((chr == "\n" || chr == "\r") && block) {
// check if this is a BibTeX entry
if(re.test(block)) {
return true;
}
block = "";
} else if(" \n\r\t".indexOf(chr) == -1) {
block += chr;
}
}
}
}