1. module uglifycss
   1. function uglifycss.processFiles (filenames, options)
   2. function uglifycss.processString (content, options)
   3. object uglifycss.defaultOptions
   4. object uglifycss.uglifycss_js
2. module uglifycss.uglifycss_js
   1. function uglifycss.uglifycss_js.processFiles (filenames, options)
   2. function uglifycss.uglifycss_js.processString (content, options)
   3. object uglifycss.uglifycss_js.defaultOptions

module uglifycss

function uglifycss.processFiles (filenames, options)

• description and source-code

  function processFiles(filenames, options) {
  
      var nFiles = filenames.length,
          uglies = [],
          index,
          filename,
          content;
  
      options = options || defaultOptions;
  
      if (options.convertUrls) {
          options.target = path.resolve(process.cwd(), options.convertUrls).split(PATH_SEP);
      }
  
      // process files
      for (index = 0; index < nFiles; index += 1) {
          filename = filenames[index];
          try {
              content = fs.readFileSync(filename, 'utf8');
              if (content.length) {
                  if (options.convertUrls) {
                      options.source = path.resolve(process.cwd(), filename).split(PATH_SEP);
                      options.source.pop();
                  }
                  uglies.push(processString(content, options));
              }
          } catch (e) {
              if (options.debug) {
                  console.error('uglifycss: unable to process "' + filename + '"\n' + e.stack);
              } else {
                  console.error('uglifycss: unable to process "' + filename + '"\n\t' + e);
              }
              process.exit(1);
          }
      }
  
      // return concat'd results
      return uglies.join('');
  }

• example usage

  ...
  Both functions return uglified css.
  
  #### Example
  
  ```js
  var uglifycss = require('uglifycss');
  
  var uglified = uglifycss.processFiles(
      [ 'file1', 'file2' ],
      { maxLineLen: 500, expandVars: true }
  );
  
  console.log(uglified);
  ```
  ...

function uglifycss.processString (content, options)

• description and source-code

  function processString(content, options) {
  
      var startIndex,
          comments = [],
          preservedTokens = [],
          token,
          len = content.length,
          pattern,
          quote,
          rgbcolors,
          hexcolor,
          placeholder,
          val,
          i,
          c,
          line = [],
          lines = [],
          vars = {};
  
      options = options || defaultOptions;
      content = extractDataUrls(content, preservedTokens);
      content = convertRelativeUrls(content, options, preservedTokens);
      content = collectComments(content, comments);
  
      // preserve strings so their content doesn't get accidentally minified
      pattern = /("([^\\"]|\\.|\\)*")|('([^\\']|\\.|\\)*')/g;
      content = content.replace(pattern, function (token) {
          quote = token.substring(0, 1);
          token = token.slice(1, -1);
          // maybe the string contains a comment-like substring or more? put'em back then
          if (token.indexOf("___PRESERVE_CANDIDATE_COMMENT_") >= 0) {
              for (i = 0, len = comments.length; i < len; i += 1) {
                  token = token.replace("___PRESERVE_CANDIDATE_COMMENT_" + i + "___", comments[i]);
              }
          }
          // minify alpha opacity in filter strings
          token = token.replace(/progid:DXImageTransform.Microsoft.Alpha\(Opacity=/gi, "alpha(opacity=");
          preservedTokens.push(token);
          return quote + ___PRESERVED_TOKEN_ + (preservedTokens.length - 1) + "___" + quote;
      });
  
      // strings are safe, now wrestle the comments
      for (i = 0, len = comments.length; i < len; i += 1) {
  
          token = comments[i];
          placeholder = "___PRESERVE_CANDIDATE_COMMENT_" + i + "___";
  
          // ! in the first position of the comment means preserve
          // so push to the preserved tokens keeping the !
          if (token.charAt(0) === "!") {
              if (options.cuteComments) {
                  preservedTokens.push(token.substring(1));
              } else if (options.uglyComments) {
                  preservedTokens.push(token.substring(1).replace(/[\r\n]/g, ''));
              } else {
                  preservedTokens.push(token);
              }
              content = content.replace(placeholder, ___PRESERVED_TOKEN_ + (preservedTokens.length - 1) + "___");
              continue;
          }
  
          // \ in the last position looks like hack for Mac/IE5
          // shorten that to /*\*/ and the next one to /**/
          if (token.charAt(token.length - 1) === "\\") {
              preservedTokens.push("\\");
              content = content.replace(placeholder, ___PRESERVED_TOKEN_ + (preservedTokens.length - 1) + "___");
              i = i + 1; // attn: advancing the loop
              preservedTokens.push("");
              content = content.replace(
                  "___PRESERVE_CANDIDATE_COMMENT_" + i + "___",
                  ___PRESERVED_TOKEN_ + (preservedTokens.length - 1) + "___"
              );
              continue;
          }
  
          // keep empty comments after child selectors (IE7 hack)
          // e.g. html >/**/ body
          if (token.length === 0) {
              startIndex = content.indexOf(placeholder);
              if (startIndex > 2) {
                  if (content.charAt(startIndex - 3) === '>') {
                      preservedTokens.push("");
                      content = content.replace(placeholder, ___PRESERVED_TOKEN_ + (preservedTokens.length - 1) + "___");
                  }
              }
          }
  
          // in all other cases kill the comment
          content = content.replace("/*" + placeholder + "*/", "");
      }
  
      if (options.expandVars) {
          // parse simple @variables blocks and remove them
          pattern = /@variables\s*\{\s*([^\}]+)\s*\}/g;
          content = content.replace(pattern, function (ignore, f1) {
              pattern = /\s*([a-z0-9\-]+)\s*:\s*([^;\}]+)\s*/gi;
              f1.replace(pattern, function (ignore, f1, f2) {
                  if (f1 && f2) {
                  vars[f1] = f2;
                  }
                  return '';
              });
              return '';
          });
  
          // replace var(x) with the value of x
          pattern = /va ...

• example usage

  n/a

module uglifycss.uglifycss_js

function uglifycss.uglifycss_js.processFiles (filenames, options)

• description and source-code

  function processFiles(filenames, options) {
  
      var nFiles = filenames.length,
          uglies = [],
          index,
          filename,
          content;
  
      options = options || defaultOptions;
  
      if (options.convertUrls) {
          options.target = path.resolve(process.cwd(), options.convertUrls).split(PATH_SEP);
      }
  
      // process files
      for (index = 0; index < nFiles; index += 1) {
          filename = filenames[index];
          try {
              content = fs.readFileSync(filename, 'utf8');
              if (content.length) {
                  if (options.convertUrls) {
                      options.source = path.resolve(process.cwd(), filename).split(PATH_SEP);
                      options.source.pop();
                  }
                  uglies.push(processString(content, options));
              }
          } catch (e) {
              if (options.debug) {
                  console.error('uglifycss: unable to process "' + filename + '"\n' + e.stack);
              } else {
                  console.error('uglifycss: unable to process "' + filename + '"\n\t' + e);
              }
              process.exit(1);
          }
      }
  
      // return concat'd results
      return uglies.join('');
  }

• example usage

  ...
  Both functions return uglified css.
  
  #### Example
  
  ```js
  var uglifycss = require('uglifycss');
  
  var uglified = uglifycss.processFiles(
      [ 'file1', 'file2' ],
      { maxLineLen: 500, expandVars: true }
  );
  
  console.log(uglified);
  ```
  ...

function uglifycss.uglifycss_js.processString (content, options)

• description and source-code

  function processString(content, options) {
  
      var startIndex,
          comments = [],
          preservedTokens = [],
          token,
          len = content.length,
          pattern,
          quote,
          rgbcolors,
          hexcolor,
          placeholder,
          val,
          i,
          c,
          line = [],
          lines = [],
          vars = {};
  
      options = options || defaultOptions;
      content = extractDataUrls(content, preservedTokens);
      content = convertRelativeUrls(content, options, preservedTokens);
      content = collectComments(content, comments);
  
      // preserve strings so their content doesn't get accidentally minified
      pattern = /("([^\\"]|\\.|\\)*")|('([^\\']|\\.|\\)*')/g;
      content = content.replace(pattern, function (token) {
          quote = token.substring(0, 1);
          token = token.slice(1, -1);
          // maybe the string contains a comment-like substring or more? put'em back then
          if (token.indexOf("___PRESERVE_CANDIDATE_COMMENT_") >= 0) {
              for (i = 0, len = comments.length; i < len; i += 1) {
                  token = token.replace("___PRESERVE_CANDIDATE_COMMENT_" + i + "___", comments[i]);
              }
          }
          // minify alpha opacity in filter strings
          token = token.replace(/progid:DXImageTransform.Microsoft.Alpha\(Opacity=/gi, "alpha(opacity=");
          preservedTokens.push(token);
          return quote + ___PRESERVED_TOKEN_ + (preservedTokens.length - 1) + "___" + quote;
      });
  
      // strings are safe, now wrestle the comments
      for (i = 0, len = comments.length; i < len; i += 1) {
  
          token = comments[i];
          placeholder = "___PRESERVE_CANDIDATE_COMMENT_" + i + "___";
  
          // ! in the first position of the comment means preserve
          // so push to the preserved tokens keeping the !
          if (token.charAt(0) === "!") {
              if (options.cuteComments) {
                  preservedTokens.push(token.substring(1));
              } else if (options.uglyComments) {
                  preservedTokens.push(token.substring(1).replace(/[\r\n]/g, ''));
              } else {
                  preservedTokens.push(token);
              }
              content = content.replace(placeholder, ___PRESERVED_TOKEN_ + (preservedTokens.length - 1) + "___");
              continue;
          }
  
          // \ in the last position looks like hack for Mac/IE5
          // shorten that to /*\*/ and the next one to /**/
          if (token.charAt(token.length - 1) === "\\") {
              preservedTokens.push("\\");
              content = content.replace(placeholder, ___PRESERVED_TOKEN_ + (preservedTokens.length - 1) + "___");
              i = i + 1; // attn: advancing the loop
              preservedTokens.push("");
              content = content.replace(
                  "___PRESERVE_CANDIDATE_COMMENT_" + i + "___",
                  ___PRESERVED_TOKEN_ + (preservedTokens.length - 1) + "___"
              );
              continue;
          }
  
          // keep empty comments after child selectors (IE7 hack)
          // e.g. html >/**/ body
          if (token.length === 0) {
              startIndex = content.indexOf(placeholder);
              if (startIndex > 2) {
                  if (content.charAt(startIndex - 3) === '>') {
                      preservedTokens.push("");
                      content = content.replace(placeholder, ___PRESERVED_TOKEN_ + (preservedTokens.length - 1) + "___");
                  }
              }
          }
  
          // in all other cases kill the comment
          content = content.replace("/*" + placeholder + "*/", "");
      }
  
      if (options.expandVars) {
          // parse simple @variables blocks and remove them
          pattern = /@variables\s*\{\s*([^\}]+)\s*\}/g;
          content = content.replace(pattern, function (ignore, f1) {
              pattern = /\s*([a-z0-9\-]+)\s*:\s*([^;\}]+)\s*/gi;
              f1.replace(pattern, function (ignore, f1, f2) {
                  if (f1 && f2) {
                  vars[f1] = f2;
                  }
                  return '';
              });
              return '';
          });
  
          // replace var(x) with the value of x
          pattern = /va ...

• example usage

  n/a