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authorAlex Yatskov <alex@foosoft.net>2016-07-24 21:22:03 -0700
committerAlex Yatskov <alex@foosoft.net>2016-07-24 21:22:03 -0700
commitd26ecab0b521e8da19c01521e5a5a3e3ada331eb (patch)
tree3b8de48d64e61ae8107f1d6033c9c7a307867cf4 /ext/fg
parent19cc8fda335f27229753038709f3765090e169e8 (diff)
Adding sentence extraction code
Diffstat (limited to 'ext/fg')
-rw-r--r--ext/fg/js/client.js94
1 files changed, 72 insertions, 22 deletions
diff --git a/ext/fg/js/client.js b/ext/fg/js/client.js
index 9806b96a..2c46e9cf 100644
--- a/ext/fg/js/client.js
+++ b/ext/fg/js/client.js
@@ -78,29 +78,8 @@ class Client {
}
}
- textSourceFromPoint(point) {
- const element = document.elementFromPoint(point.x, point.y);
- if (element !== null) {
- switch (element.nodeName) {
- case 'IMG':
- return new TextSourceImage(element);
- case 'INPUT':
- case 'BUTTON':
- case 'TEXTAREA':
- return new TextSourceInput(element);
- }
- }
-
- const range = document.caretRangeFromPoint(point.x, point.y);
- if (range !== null) {
- return new TextSourceRange(range);
- }
-
- return null;
- }
-
searchAt(point) {
- const textSource = this.textSourceFromPoint(point);
+ const textSource = Client.textSourceFromPoint(point);
if (textSource === null || !textSource.containsPoint(point)) {
this.hidePopup();
return;
@@ -218,6 +197,77 @@ class Client {
);
});
}
+
+ static textSourceFromPoint(point) {
+ const element = document.elementFromPoint(point.x, point.y);
+ if (element !== null) {
+ switch (element.nodeName) {
+ case 'IMG':
+ return new TextSourceImage(element);
+ case 'INPUT':
+ case 'BUTTON':
+ case 'TEXTAREA':
+ return new TextSourceInput(element);
+ }
+ }
+
+ const range = document.caretRangeFromPoint(point.x, point.y);
+ if (range !== null) {
+ return new TextSourceRange(range);
+ }
+
+ return null;
+ }
+
+ static extractSentence(content, position) {
+ const quotesFwd = {'「': '」', '『': '』', "'": "'", '"': '"'};
+ const quotesBwd = {'」': '「', '』': '『', "'": "'", '"': '"'};
+ const terminators = '…。..??!!';
+
+ let quoteStack = [];
+
+ let startPos = 0;
+ for (let i = position; i >= startPos; --i) {
+ const c = content[i];
+
+ if (quoteStack.length === 0 && (terminators.indexOf(c) !== -1 || c in quotesFwd)) {
+ startPos = i + 1;
+ break;
+ }
+
+ if (quoteStack.length > 0 && c === quoteStack[0]) {
+ quoteStack.pop();
+ } else if (c in quotesBwd) {
+ quoteStack = [quotesBwd[c]].concat(quoteStack);
+ }
+ }
+
+ quoteStack = [];
+
+ let endPos = content.length;
+ for (let i = position; i < endPos; ++i) {
+ const c = content[i];
+
+ if (quoteStack.length === 0) {
+ if (terminators.indexOf(c) !== -1) {
+ endPos = i + 1;
+ break;
+ }
+ else if (c in quotesBwd) {
+ endPos = i;
+ break;
+ }
+ }
+
+ if (quoteStack.length > 0 && c === quoteStack[0]) {
+ quoteStack.pop();
+ } else if (c in quotesFwd) {
+ quoteStack = [quotesFwd[c]].concat(quoteStack);
+ }
+ }
+
+ return content.substring(startPos, endPos).trim();
+ }
}
window.yomiClient = new Client();