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"use strict";
var RASTER = /\.(jpe?g|png|webp)$/i;
var RETAINED = /\.(gif|svg|mp4)$/i;
function extension(name) {
var match = String(name || "").toLowerCase().match(/\.[^.]+$/);
return match ? match[0] : "";
}
function validateFile(file, cover) {
var errors = [];
var ext = extension(file && file.name);
var size = Number(file && file.size) || 0;
if (!RASTER.test(ext) && !RETAINED.test(ext)) {
errors.push("仅支持 JPEG、PNG、WebP、GIF、SVG 或 MP4");
return errors;
}
if (cover && !RASTER.test(ext)) {
errors.push("封面仅支持 JPEG、PNG 或 WebP 静态图片");
}
if (ext === ".svg" && size > 1024 * 1024) {
errors.push("SVG 不能超过 1MB");
}
if (ext === ".gif" && size > 5 * 1024 * 1024) {
errors.push("GIF 不能超过 5MB");
}
if (ext === ".mp4" && size > 10 * 1024 * 1024) {
errors.push("MP4 不能超过 10MB");
}
return errors;
}
function targetExtension(file) {
var ext = extension(file && file.name);
return RASTER.test(ext) ? ".webp" : ext;
}
function nextFileName(existing, cover, ext) {
var names = Array.isArray(existing) ? existing : [];
if (cover) {
if (names.indexOf("cover" + ext) === -1) return "cover" + ext;
var coverIndex = 2;
while (names.indexOf("cover-" + String(coverIndex).padStart(2, "0") + ext) !== -1) {
coverIndex += 1;
}
return "cover-" + String(coverIndex).padStart(2, "0") + ext;
}
var index = 1;
while (names.some(function (name) {
return new RegExp("^image-" + String(index).padStart(2, "0") + "\\.", "i").test(name);
})) {
index += 1;
}
return "image-" + String(index).padStart(2, "0") + ext;
}
function fitDimensions(width, height, maxEdge) {
var limit = maxEdge || 1600;
var longest = Math.max(width, height);
if (!longest || longest <= limit) return { width: width, height: height };
var ratio = limit / longest;
return {
width: Math.max(1, Math.round(width * ratio)),
height: Math.max(1, Math.round(height * ratio)),
};
}
function decodeHtmlEntities(value) {
var text = String(value || "");
return text.replace(
/&(?:#x([0-9a-f]+)|#([0-9]+)|(amp|lt|gt|quot|apos));/gi,
function (match, hex, decimal, named) {
var codePoint = hex
? parseInt(hex, 16)
: decimal
? parseInt(decimal, 10)
: null;
if (codePoint !== null) {
return codePoint > 0 &&
codePoint <= 0x10ffff &&
!(codePoint >= 0xd800 && codePoint <= 0xdfff)
? String.fromCodePoint(codePoint)
: "\uFFFD";
}
Iif (named === "amp") return "&";
if (named === "lt") return "<";
if (named === "gt") return ">";
if (named === "quot") return '"';
Eif (named === "apos") return "'";
return match;
},
);
}
/**
* Blacklist-style SVG safety check for the CMS upload path.
*
* The check runs before an SVG enters the repository, so it rejects
* executable content instead of sanitizing it in place. To close the
* common encoding bypasses it first decodes HTML entities and removes
* whitespace, then scans for script/foreignObject elements, event
* handler attributes, javascript: URLs and inline data: payloads.
*
* This is deliberately conservative: legitimate SVGs containing these
* literal strings are rejected. A full allowlist parser would be more
* precise and is the recommended upgrade if SVG uploads ever become
* multi-user.
*/
function isSafeSvg(source) {
var decoded = decodeHtmlEntities(String(source || ""));
var compact = decoded.replace(/\s+/g, "");
return !(
/<script\b/i.test(compact) ||
/<foreignobject\b/i.test(compact) ||
/on[a-z]+\s*=/i.test(compact) ||
/javascript:/i.test(compact) ||
/(?:href|xlink:href|src)\s*=\s*["']?data:|url\(\s*["']?data:|@import\s*["']?data:/i.test(
compact,
)
);
}
function normalizeMediaReference(value) {
var path = String(value || "").split(/[?#]/, 1)[0];
try {
return decodeURIComponent(path);
} catch (_error) {
return path;
}
}
function classifyMedia(files, references) {
var known = new Set((Array.isArray(references) ? references : []).map(normalizeMediaReference));
return (Array.isArray(files) ? files : []).map(function (file) {
var publicPath = "/" + String(file.path || "").replace(/^public\//, "");
return { path: file.path, referenced: known.has(normalizeMediaReference(publicPath)) };
});
}
function deletionPaths(files) {
return (Array.isArray(files) ? files : [])
.filter(function (file) { return file && file.referenced === false; })
.map(function (file) { return String(file.path || ""); })
.filter(Boolean);
}
function deletionSelectionState(files, selectedPaths) {
var paths = deletionPaths(files);
var selected = new Set(Array.isArray(selectedPaths) ? selectedPaths : []);
var selectedCount = paths.reduce(function (count, path) {
return count + (selected.has(path) ? 1 : 0);
}, 0);
return {
paths: paths,
checked: paths.length > 0 && selectedCount === paths.length,
indeterminate: selectedCount > 0 && selectedCount < paths.length,
};
}
function toggleDeletionSelection(selectedPaths, files, checked) {
var selected = new Set(Array.isArray(selectedPaths) ? selectedPaths : []);
deletionPaths(files).forEach(function (path) {
if (checked) selected.add(path);
else selected.delete(path);
});
return Array.from(selected);
}
function urlTitleSegment(title) {
return Array.from(String(title || "").trim()).map(function (character) {
var codePoint = character.codePointAt(0) || 0;
return codePoint > 127 || /^[A-Za-z0-9._~-]$/.test(character)
? character
: "%" + codePoint.toString(16).toUpperCase().padStart(2, "0");
}).join("");
}
window.DecapMediaDomain = {
validateFile: validateFile,
targetExtension: targetExtension,
nextFileName: nextFileName,
fitDimensions: fitDimensions,
isSafeSvg: isSafeSvg,
classifyMedia: classifyMedia,
normalizeMediaReference: normalizeMediaReference,
deletionSelectionState: deletionSelectionState,
toggleDeletionSelection: toggleDeletionSelection,
urlTitleSegment: urlTitleSegment,
isRaster: function (file) { return RASTER.test(extension(file && file.name)); },
};
})();
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