done purchases remove, ocr scan, read image

2019-01-28 01:34:06 +01:00
parent d9c3d422d7
commit 93bbf9c2cb
203 changed files with 21267 additions and 41 deletions
--- a/express-server/node_modules/dicer/lib/HeaderParser.js
+++ b/express-server/node_modules/dicer/lib/HeaderParser.js
@ -0,0 +1,110 @@
+var EventEmitter = require('events').EventEmitter,
+    inherits = require('util').inherits;
+
+var StreamSearch = require('streamsearch');
+
+var B_DCRLF = new Buffer('\r\n\r\n'),
+    RE_CRLF = /\r\n/g,
+    RE_HDR = /^([^:]+):[ \t]?([\x00-\xFF]+)?$/,
+    MAX_HEADER_PAIRS = 2000, // from node's http.js
+    MAX_HEADER_SIZE = 80 * 1024; // from node's http_parser
+
+function HeaderParser(cfg) {
+  EventEmitter.call(this);
+
+  var self = this;
+  this.nread = 0;
+  this.maxed = false;
+  this.npairs = 0;
+  this.maxHeaderPairs = (cfg && typeof cfg.maxHeaderPairs === 'number'
+                         ? cfg.maxHeaderPairs
+                         : MAX_HEADER_PAIRS);
+  this.buffer = '';
+  this.header = {};
+  this.finished = false;
+  this.ss = new StreamSearch(B_DCRLF);
+  this.ss.on('info', function(isMatch, data, start, end) {
+    if (data && !self.maxed) {
+      if (self.nread + (end - start) > MAX_HEADER_SIZE) {
+        end = (MAX_HEADER_SIZE - self.nread);
+        self.nread = MAX_HEADER_SIZE;
+      } else
+        self.nread += (end - start);
+
+      if (self.nread === MAX_HEADER_SIZE)
+        self.maxed = true;
+
+      self.buffer += data.toString('binary', start, end);
+    }
+    if (isMatch)
+      self._finish();
+  });
+}
+inherits(HeaderParser, EventEmitter);
+
+HeaderParser.prototype.push = function(data) {
+  var r = this.ss.push(data);
+  if (this.finished)
+    return r;
+};
+
+HeaderParser.prototype.reset = function() {
+  this.finished = false;
+  this.buffer = '';
+  this.header = {};
+  this.ss.reset();
+};
+
+HeaderParser.prototype._finish = function() {
+  if (this.buffer)
+    this._parseHeader();
+  this.ss.matches = this.ss.maxMatches;
+  var header = this.header;
+  this.header = {};
+  this.buffer = '';
+  this.finished = true;
+  this.nread = this.npairs = 0;
+  this.maxed = false;
+  this.emit('header', header);
+};
+
+HeaderParser.prototype._parseHeader = function() {
+  if (this.npairs === this.maxHeaderPairs)
+    return;
+
+  var lines = this.buffer.split(RE_CRLF), len = lines.length, m, h,
+      modded = false;
+
+  for (var i = 0; i < len; ++i) {
+    if (lines[i].length === 0)
+      continue;
+    if (lines[i][0] === '\t' || lines[i][0] === ' ') {
+      // folded header content
+      // RFC2822 says to just remove the CRLF and not the whitespace following
+      // it, so we follow the RFC and include the leading whitespace ...
+      this.header[h][this.header[h].length - 1] += lines[i];
+    } else {
+      m = RE_HDR.exec(lines[i]);
+      if (m) {
+        h = m[1].toLowerCase();
+        if (m[2]) {
+          if (this.header[h] === undefined)
+            this.header[h] = [m[2]];
+          else
+            this.header[h].push(m[2]);
+        } else
+          this.header[h] = [''];
+        if (++this.npairs === this.maxHeaderPairs)
+          break;
+      } else {
+        this.buffer = lines[i];
+        modded = true;
+        break;
+      }
+    }
+  }
+  if (!modded)
+    this.buffer = '';
+};
+
+module.exports = HeaderParser;