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Add ability to get any file from the Epub + access raw HTML content

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This commit is contained in:
Julien Chaumond 2013-12-04 17:26:03 +01:00
parent 18f50d4ba2
commit 7386d4ff9a
1 changed files with 117 additions and 79 deletions
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68
epub.js
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@ -216,7 +216,7 @@ EPub.prototype.getRootFiles = function () {
/** /**
* EPub#handleRootFile() -> undefined * EPub#handleRootFile() -> undefined
* *
* Parser the rootfile XML and calls rootfile parser * Parses the rootfile XML and calls rootfile parser
**/ **/
EPub.prototype.handleRootFile = function () { EPub.prototype.handleRootFile = function () {
@ -527,22 +527,14 @@ EPub.prototype.walkNavMap = function (branch, path, id_list, level) {
* <head> etc. elements. Return only chapters with mime type application/xhtml+xml * <head> etc. elements. Return only chapters with mime type application/xhtml+xml
**/ **/
EPub.prototype.getChapter = function (id, callback) { EPub.prototype.getChapter = function (id, callback) {
var i, len, path = this.rootFile.split("/"), keys = Object.keys(this.manifest); this.getChapterRaw(id, (function (err, str) {
path.pop();
if (this.manifest[id]) {
if ((this.manifest[id]['media-type'] || "").toLowerCase().trim() != "application/xhtml+xml") {
return callback(new Error("Inavlid mime type for chapter"));
}
this.zip.readFile(this.manifest[id].href, (function (err, data) {
if (err) { if (err) {
callback(new Error("Reading archive failed")); callback(err);
return; return;
} }
var str = data.toString("utf-8"); var i, len, path = this.rootFile.split("/"), keys = Object.keys(this.manifest);
path.pop();
// remove linebreaks (no multi line matches in JS regex!) // remove linebreaks (no multi line matches in JS regex!)
str = str.replace(/\r?\n/g, "\u0000"); str = str.replace(/\r?\n/g, "\u0000");
@ -617,6 +609,33 @@ EPub.prototype.getChapter = function (id, callback) {
// bring back linebreaks // bring back linebreaks
str = str.replace(/\u0000/g, "\n").trim(); str = str.replace(/\u0000/g, "\n").trim();
callback(null, str);
}).bind(this));
};
/**
* EPub#getChapterRaw(id, callback) -> undefined
* - id (String): Manifest id value for a chapter
* - callback (Function): callback function
*
* Returns the raw chapter text for an id.
**/
EPub.prototype.getChapterRaw = function (id, callback) {
if (this.manifest[id]) {
if ((this.manifest[id]['media-type'] || "").toLowerCase().trim() != "application/xhtml+xml") {
return callback(new Error("Invalid mime type for chapter"));
}
this.zip.readFile(this.manifest[id].href, (function (err, data) {
if (err) {
callback(new Error("Reading archive failed"));
return;
}
var str = data.toString("utf-8");
callback(null, str); callback(null, str);
}).bind(this)); }).bind(this));
@ -631,7 +650,7 @@ EPub.prototype.getChapter = function (id, callback) {
* - id (String): Manifest id value for an image * - id (String): Manifest id value for an image
* - callback (Function): callback function * - callback (Function): callback function
* *
* Finds an image an id. Returns the image as Buffer. Callback gets * Finds an image for an id. Returns the image as Buffer. Callback gets
* an error object, image buffer and image content-type. * an error object, image buffer and image content-type.
* Return only images with mime type image * Return only images with mime type image
**/ **/
@ -639,9 +658,27 @@ EPub.prototype.getImage = function (id, callback) {
if (this.manifest[id]) { if (this.manifest[id]) {
if ((this.manifest[id]['media-type'] || "").toLowerCase().trim().substr(0, 6) != "image/") { if ((this.manifest[id]['media-type'] || "").toLowerCase().trim().substr(0, 6) != "image/") {
return callback(new Error("Inavlid mime type for image")); return callback(new Error("Invalid mime type for image"));
} }
this.getFile(id, callback);
} else {
callback(new Error("File not found"));
}
};
/**
* EPub#getFile(id, callback) -> undefined
* - id (String): Manifest id value for a file
* - callback (Function): callback function
*
* Finds a file for an id. Returns the file as Buffer. Callback gets
* an error object, file contents buffer and file content-type.
**/
EPub.prototype.getFile = function (id, callback) {
if (this.manifest[id]) {
this.zip.readFile(this.manifest[id].href, (function (err, data) { this.zip.readFile(this.manifest[id].href, (function (err, data) {
if (err) { if (err) {
callback(new Error("Reading archive failed")); callback(new Error("Reading archive failed"));
@ -655,5 +692,6 @@ EPub.prototype.getImage = function (id, callback) {
} }
}; };
// Expose to the world // Expose to the world
module.exports = EPub; module.exports = EPub;