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/**
* All writing related code here. This is so that we can separate the async code from sync code
* for testability
*/
var pathUtils = require('path');
var qfs = require('q-fs');
var Q = require('qq');
var OUTPUT_DIR = pathUtils.join('build','docs');
var TEMPLATES_DIR = pathUtils.join('docs','src','templates');
var fs = require('fs');
exports.output = output;
function output(file, content) {
var fullPath = pathUtils.join(OUTPUT_DIR,file);
var dir = pathUtils.dirname(fullPath);
return Q.when(exports.makeDir(dir), function(error) {
qfs.write(fullPath, exports.toString(content));
});
}
//recursively create directory
exports.makeDir = function(p) {
p = pathUtils.normalize(p);
var parts = p.split(pathUtils.sep);
var path = ".";
// Recursively rebuild directory structure
return qfs.exists(p).
then(function createPart(exists) {
if(!exists && parts.length) {
path = pathUtils.join(path, parts.shift());
return qfs.exists(path).then(function(exists) {
if (!exists) {
return qfs.makeDirectory(path).then(createPart, createPart);
} else {
return createPart();
}
});
}
});
};
exports.copyTemplate = function(filename) {
// Don't need to normalize here as `exports.copy` will do it for us
return exports.copy(pathUtils.join(TEMPLATES_DIR,filename), filename);
};
/* Copy files from one place to another.
* @param from{string} path of the source file to be copied
* @param to{string} path of where the copied file should be stored
* @param transform{function=} transfromation function to be applied before return
*/
exports.copy = function(from, to, transform) {
from = pathUtils.normalize(from);
to = pathUtils.normalize(to);
// We have to use binary reading, Since some characters are unicode.
return qfs.read(from, 'b').then(function(content) {
if (transform) {
content = transform.call(null, content.toString(), from, to, transform);
}
return output(to, content);
});
};
exports.symlink = symlink;
function symlink(from, to, type) {
// qfs will normalize the path arguments for us here
return qfs.exists(to).then(function(exists) {
if (!exists) {
return qfs.symbolicLink(to, from, type);
}
});
}
exports.symlinkTemplate = symlinkTemplate;
function symlinkTemplate(filename, type) {
// pathUtils.join will normalize the filename for us
var dest = pathUtils.join(OUTPUT_DIR, filename),
dirDepth = dest.split(pathUtils.sep).length,
src = pathUtils.join(Array(dirDepth).join('..' + pathUtils.sep), TEMPLATES_DIR, filename);
return symlink(src, dest, type);
}
/* Replace placeholders in content accordingly
* @param content{string} content to be modified
* @param replacements{obj} key and value pairs in which key will be replaced with value in content
*/
exports.replace = function(content, replacements) {
for(var key in replacements) {
content = content.replace(key, replacements[key]);
}
return content;
};
exports.copyDir = function copyDir(from, to) {
from = pathUtils.normalize(from);
to = pathUtils.normalize(to);
return qfs.listTree(from).then(function(files) {
files.forEach(function(file) {
var path = to ? file.replace(from, to) : from;
// Not sure why this next line is here...
path = path.replace('/docs/build', '');
exports.copy(file, path);
});
});
};
exports.merge = function(srcs, to) {
// pathUtils.join will normalize each of the srcs inside the mapping
to = pathUtils.normalize(to);
return merge(srcs.map(function(src) { return pathUtils.join(TEMPLATES_DIR, src); }), to);
};
function merge(srcs, to) {
var contents = [];
//Sequentially read file
var done;
srcs.forEach(function(src) {
done = Q.when(done, function(content) {
if(content) contents.push(content);
return qfs.read(src, 'b');
});
});
// write to file
return Q.when(done, function(content) {
contents.push(content);
return output(to, contents.join('\n'));
});
}
//----------------------- Synchronous Methods ----------------------------------
exports.toString = function toString(obj) {
switch (typeof obj) {
case 'string':
return obj;
case 'object':
if (obj instanceof Array) {
obj.forEach(function(value, key) {
obj[key] = toString(value);
});
return obj.join('');
} else if (obj.constructor.name == 'Buffer'){
// do nothing it is Buffer Object
} else {
return JSON.stringify(obj);
}
}
return obj;
};
function noop() {}
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