class ActFunc::Fileupload
Public Class Methods
get file format params: filename->file’s name return: file format ‘.jpg’,‘.exe’
# File lib/act_func/fileupload.rb, line 66 def Fileupload.file_format(filename) /\.[^\.]+$/.match(filename)[0] end
validate file format params: file-> file stream; rule-> validate rule (“jpg|xls”) return: validate result -> true | false
# File lib/act_func/fileupload.rb, line 45 def Fileupload.filename_validata(file, rule) !eval("/\.(#{rule})+$/").match(file.original_filename).blank? end
get new file’s name params:filestream->file stream file name,filepath->file save path return:new file’s name
# File lib/act_func/fileupload.rb, line 52 def Fileupload.getname(filestream, filepath) file_for = Fileupload.file_format(filestream.original_filename) filename = Time.now.strftime("%Y%m%d%h%m%s")<<rand(99999).to_s<<file_for file = filepath+filename while File.exist?(file) do filename = Time.now.strftime("%Y%m%d%h%m%s")<<rand(99999).to_s<<file_for file = filepath+filename end filename end
image upload params: file->file stream; filepath->file save path; rule->can upload file format(“jpg|xls”); minsize and maxsize->minsize<file’s size<maxsize; w->new image width, h->new image height return: {state: true, result: “new filename”} or {state: false, result: “error message”}
# File lib/act_func/fileupload.rb, line 73 def Fileupload.imageupload(imgfile, filepath="", rule="jpg|jpeg", minsize=0, maxsize=2000, w=0, h=0) result = Fileupload.rule_validata(imgfile, rule, minsize, maxsize) if result[:state] sname = Fileupload.getname(imgfile, filepath) begin unless Dir::exist?(filepath) unless system("mkdir -p #{filepath}") return {state: false, result: "目录创建失败,请于管理员联系"} end end File.open(filepath+sname, "wb") do |f| f.write(imgfile.read) end Fileupload.resize(filepath + sname, w, h) return {state: true, result: sname} rescue return {state: false, result: "写入图片失败:#{$!}"} end else return {state: false, result: result[:message]} end end
image resize params: imagepath-> image file path; w-> new image width; h-> new image height
# File lib/act_func/fileupload.rb, line 105 def Fileupload.resize(imagepath, w, h) img = Magick::Image.read(imagepath)[0] if w==0 || h==0 w=img.columns h=img.rows end newimg = img.resize_to_fill(w, h) newimg.write(imagepath) end
delete dir params: dir-> dir path return true or false
# File lib/act_func/fileupload.rb, line 99 def Fileupload.rmdir(dir) system("rm -rf #{dir}") end
validate file params:file->file stream,rule->can upload file format,minsize<file’s size<maxsize return:{state: true} or return {state: false, message: “error message”}
# File lib/act_func/fileupload.rb, line 31 def Fileupload.rule_validata(file, rule, minsize, maxsize) rule_for = Fileupload.filename_validata(file, rule) unless rule_for return {state: false, message: "错误:文件格式不对,只允许上传#{rule}格式!\\n"} end if file.size<minsize*1024 || file.size>maxsize*1024 return {state: false, message: "错误:文件大小错误,只允许#{minsize}kb~#{maxsize}kb!\\n"} end return {state: true} end
file upload params: file->file stream,filepath->file save path,rule->can upload file format(“jpg|xls”),minsize and maxsize->minsize<file’s size<maxsize return: {state: true, result: “new filename”} or {state: false, result: “error message”}
# File lib/act_func/fileupload.rb, line 6 def Fileupload.upload(file, filepath="", rule="jpg|xls", minsize=1, maxsize=4000) result = Fileupload.rule_validata(file, rule, minsize, maxsize) if result[:state] sname = Fileupload.getname(file, filepath) begin unless Dir::exist?(filepath) unless system("mkdir -p #{filepath}") return {state: false, result: "目录创建失败,请于管理员联系"} end end File.open(filepath+sname, "wb") do |f| f.write(file.read) end return {state: true, result: sname} rescue return {state: false, result: "写入文件失败:#{$!}"} end else return {state: false, result: result[:message]} end end