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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/encoding/legacy-mb-tchinese/big5/big5-encoder.js
parentInitial commit. (diff)
downloadfirefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz
firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/encoding/legacy-mb-tchinese/big5/big5-encoder.js')
-rw-r--r--testing/web-platform/tests/encoding/legacy-mb-tchinese/big5/big5-encoder.js122
1 files changed, 122 insertions, 0 deletions
diff --git a/testing/web-platform/tests/encoding/legacy-mb-tchinese/big5/big5-encoder.js b/testing/web-platform/tests/encoding/legacy-mb-tchinese/big5/big5-encoder.js
new file mode 100644
index 0000000000..4c9a41bb3f
--- /dev/null
+++ b/testing/web-platform/tests/encoding/legacy-mb-tchinese/big5/big5-encoder.js
@@ -0,0 +1,122 @@
+var big5CPs = []; // index is unicode cp, value is pointer
+for (var p = 5024; p < big5.length; p++) {
+ // "Let index be index jis0208 excluding all pointers in the range 8272 to 8835, inclusive."
+ if (big5[p] != null && big5CPs[big5[p]] == null) {
+ big5CPs[big5[p]] = p;
+ }
+}
+// If code point is U+2550, U+255E, U+2561, U+256A, U+5341, or U+5345, return the last pointer corresponding to code point in index.
+big5CPs[0x2550] = 18991;
+big5CPs[0x255e] = 18975;
+big5CPs[0x2561] = 18977;
+big5CPs[0x256a] = 18976;
+big5CPs[0x5341] = 5512;
+big5CPs[0x5345] = 5599;
+
+function chars2cps(chars) {
+ // this is needed because of javascript's handling of supplementary characters
+ // char: a string of unicode characters
+ // returns an array of decimal code point values
+ var haut = 0;
+ var out = [];
+ for (var i = 0; i < chars.length; i++) {
+ var b = chars.charCodeAt(i);
+ if (b < 0 || b > 0xffff) {
+ alert("Error in chars2cps: byte out of range " + b.toString(16) + "!");
+ }
+ if (haut != 0) {
+ if (0xdc00 <= b && b <= 0xdfff) {
+ out.push(0x10000 + ((haut - 0xd800) << 10) + (b - 0xdc00));
+ haut = 0;
+ continue;
+ } else {
+ alert(
+ "Error in chars2cps: surrogate out of range " +
+ haut.toString(16) +
+ "!"
+ );
+ haut = 0;
+ }
+ }
+ if (0xd800 <= b && b <= 0xdbff) {
+ haut = b;
+ } else {
+ out.push(b);
+ }
+ }
+ return out;
+}
+
+function big5Encoder(stream) {
+ var cps = chars2cps(stream);
+ var out = "";
+ var cp;
+ var finished = false;
+ var endofstream = 2000000;
+
+ while (!finished) {
+ if (cps.length == 0) cp = endofstream;
+ else cp = cps.shift();
+
+ var cpx = 0;
+
+ if (cp == endofstream) {
+ finished = true;
+ continue;
+ }
+ if (cp >= 0x00 && cp <= 0x7f) {
+ // ASCII
+ out += " " + cp.toString(16).toUpperCase();
+ continue;
+ }
+ var ptr = big5CPs[cp];
+ if (ptr == null) {
+ return null;
+ // out += ' &#'+cp+';'
+ // continue
+ }
+ var lead = Math.floor(ptr / 157) + 0x81;
+ var trail = ptr % 157;
+ var offset;
+ if (trail < 0x3f) offset = 0x40;
+ else {
+ offset = 0x62;
+ }
+ var end = trail + offset;
+ out +=
+ " " +
+ lead.toString(16).toUpperCase() +
+ " " +
+ end.toString(16).toUpperCase();
+ }
+
+ return out.trim();
+}
+
+function convertToHex(str) {
+ // converts a string of ASCII characters to hex byte codes
+ var out = "";
+ var result;
+ for (var c = 0; c < str.length; c++) {
+ result = str.charCodeAt(c).toString(16).toUpperCase() + " ";
+ out += result;
+ }
+ return out;
+}
+
+function normalizeStr(str) {
+ var out = "";
+ for (var c = 0; c < str.length; c++) {
+ if (str.charAt(c) == "%") {
+ out += String.fromCodePoint(
+ parseInt(str.charAt(c + 1) + str.charAt(c + 2), 16)
+ );
+ c += 2;
+ } else out += str.charAt(c);
+ }
+ var result = "";
+ for (var o = 0; o < out.length; o++) {
+ result += "%" + out.charCodeAt(o).toString(16).toUpperCase();
+ }
+ return result.replace(/%1B%28%42$/, "");
+}