我正在尝试读取.CFL文件，该文件是控制文件或映射文件，然后将用于处理现有数据（来自FAO的PSD数据）。我正在尝试找出如何读取.cfl文件，以使其跳过注释，然后将表格的其余部分组织成一种不错的格式。一种方法是将所有内容复制粘贴到Excel中，并将其组织成格式良好的列，然后阅读。但是我想知道是否有一种方法可以绕开它，并将.CFL直接读入R。在下面的.CFL文件中，我想读取商品代码和名称，但是跳过所有注释块（！，/ * ，* /）
! PS&D commodity definitions and aggregations.
! Comments are indicated by the following symbols, starting in column 1:
! ! begins a comment line.
! /* begins a comment block.
! */ ends a comment block.
! Table: Define commodities
! | CSV commodity code; input or aggregate. Output order implied. This field is treated as text.
! | (Many of the numeric codes match SITC Revision 3, http://www.intracen.org/tradstat/sitc3list.htm)
! | | TS file name; output
! | | | TS commodity name; output
! | | | | First output year. Default=all years.
! | | | | | Year offset, from CSV file year (left-hand number) to TS year. Default=0.
! | | | | | | Print empty tables: 1=yes, 0=no=default
! | | | | | | | Comments
! --------- ------- -------- ----------------------- ---- -- - ......
COMMODITY 0011000 CATTLE Cattle
COMMODITY 0013000 SWINE Swine
COMMODITY 0111000 BFVEAL Beefveal
COMMODITY 0113000 PORK Pork
COMMODITY 0114000 POULTRY_ Poultry_Chicken+Turkey
COMMODITY 0115000 CHICKEN Chicken
COMMODITY 0114300 TURKEY Turkey
COMMODITY EGGS EGGS Eggs
COMMODITY LAMBMUT LAMBMUT Lamb Mutton
COMMODITY 0223000 FLUIDMK Fluid Milk
COMMODITY 0224200 NFDMILK Nonfat Dry Milk
COMMODITY 0224400 DAIRYDM Dairy Dry Milk
COMMODITY 0230000 BUTTER Butter
COMMODITY 0240000 CHEESE Cheese
COMMODITY 0410000 WHEAT Wheat
COMMODITY 0422110 RICE Rice
COMMODITY 0430000 BARLEY Barley
COMMODITY 0440000 CORN Corn
COMMODITY 0451000 RYE Rye
COMMODITY 0452000 OATS Oats
COMMODITY 0459100 MILLET Millet
COMMODITY 0459200 SORGHUM Sorghum
COMMODITY 0459900 MIXGRNS Mixed Grains
COMMODITY CGRAINS CGRAINS Coarse Grains
COMMODITY TOTGRNS TOTGRNS Total Grains
COMMODITY 0612000 SUGAR Sugar
COMMODITY 0813100 SOYMEAL Soybean Meal
COMMODITY 0813200 PNUTML Peanut Meal
COMMODITY 0813300 COTMEAL Cottonseed Meal
COMMODITY 0813500 SUNMEAL Sunflower Meal
COMMODITY 0813600 RAPEML Rape Meal
COMMODITY 0813700 COPMEAL Copra Meal
COMMODITY 0813800 PKERNML Palm Kernel Meal
COMMODITY 0814200 FISHML Fish Meal
COMMODITY TOTMEAL TOTMEAL Total Meals
COMMODITY 2221000 PEANUTS Peanuts
COMMODITY 2222000 SOYBEAN Soybean
COMMODITY 2223000 COTSEED Cottonseed
COMMODITY 2224000 SUNSEED Sunflowerseed
COMMODITY 2226000 RAPESD Rapeseed
COMMODITY 2231000 COPRA Copra
COMMODITY 2232000 PALMKRN Palm Kernel
COMMODITY TOTSEED TOTSEED Total Seeds 1961
COMMODITY 2631000 COTTON Cotton
COMMODITY COTBALE COTTONBA Cotton (bales) 0
COMMODITY 4232000 SOYOIL Soybean Oil
COMMODITY 4233000 COTOIL Cottonseed Oil
COMMODITY 4234000 PNUTOIL Peanut Oil
COMMODITY 4235000 OLIVOIL Olive Oil
COMMODITY 4236000 SUNOIL Sunflower Oil
COMMODITY 4239100 RAPEOIL Rape Oil
COMMODITY 4242000 CNUTOIL Coconut Oil
COMMODITY 4243000 PALMOIL Palm Oil
COMMODITY 4244000 PKEROIL Palm Kernel Oil
COMMODITY VEGOILS VEGOILS Vegetable Oils
COMMODITY TROPOIL TROPOIL Tropical Oils
COMMODITY TOTOILS TOTOILS Total Oils
! --------- ------- -------- ----------------------- ---- -- - ......
! Table: Define generic commodity aggregations. Fine-tuning possible in VarCsvTs.cfl.
! | Output (aggregate) commodity
! | | Operator: + -
! | | | Input Csv commodity to be included in aggregate
! | | | | Comments
! ------- ------- - ------- ......
!Poultry, Meat, Total. Change aggregate code if FAS provides total Poultry Meat
! again (unlikely); same code used.
COMAGGR 0114000 + 0115000 'Plty, Meat, Chicken -16 wks'
COMAGGR 0114000 + 0114300 'Poultry, Meat, Turkey'
! Total coarse grains
COMAGGR CGRAINS + 0430000 'Barley
COMAGGR CGRAINS + 0440000 'Corn
COMAGGR CGRAINS + 0451000 'Rye
COMAGGR CGRAINS + 0452000 'Oats
COMAGGR CGRAINS + 0459100 'Millet
COMAGGR CGRAINS + 0459200 'Sorghum
COMAGGR CGRAINS + 0459900 'Mixed Grains
! Total oilseeds
COMAGGR TOTSEED + 2221000 'Oilseed, Peanut
COMAGGR TOTSEED + 2222000 'Oilseed, Soybean
COMAGGR TOTSEED + 2223000 'Oilseed, Cottonseed
COMAGGR TOTSEED + 2224000 'Oilseed, Sunflowerseed
COMAGGR TOTSEED + 2226000 'Oilseed, Rapeseed
COMAGGR TOTSEED + 2231000 'Oilseed, Copra
COMAGGR TOTSEED + 2232000 'Oilseed, Palm Kernel
! Total oils
! COMAGGR TOTOILS + 4111100 'Oil, Fish
! COMAGGR TOTOILS + 4113200 'By-Products,Tallow & Grease
COMAGGR TOTOILS + 4232000 'Oil, Soybean
COMAGGR TOTOILS + 4233000 'Oil, Cottonseed
COMAGGR TOTOILS + 4234000 'Oil, Peanut
COMAGGR TOTOILS + 4235000 'Oil, Olive
COMAGGR TOTOILS + 4236000 'Oil, Sunflowerseed
COMAGGR TOTOILS + 4239100 'Oil, Rapeseed
COMAGGR TOTOILS + 4242000 'Oil, Coconut
COMAGGR TOTOILS + 4243000 'Oil, Palm
COMAGGR TOTOILS + 4244000 'Oil, Palm Kernel
! Veg oils
COMAGGR VEGOILS + 4232000 'Oil, Soybean
COMAGGR VEGOILS + 4233000 'Oil, Cottonseed
COMAGGR VEGOILS + 4234000 'Oil, Peanut
COMAGGR VEGOILS + 4235000 'Oil, Olive
COMAGGR VEGOILS + 4236000 'Oil, Sunflowerseed
COMAGGR VEGOILS + 4239100 'Oil, Rapeseed
COMAGGR VEGOILS + 4242000 'Oil, Coconut
COMAGGR VEGOILS + 4243000 'Oil, Palm
COMAGGR VEGOILS + 4244000 'Oil, Palm Kernel
! Tropical Oils
COMAGGR TROPOIL + 4242000 'Oil, Coconut
COMAGGR TROPOIL + 4243000 'Oil, Palm
COMAGGR TROPOIL + 4244000 'Oil, Palm Kernel
! Total meals
COMAGGR TOTMEAL + 0813100 'Meal, Soybean
COMAGGR TOTMEAL + 0813200 'Meal, Peanut
COMAGGR TOTMEAL + 0813300 'Meal, Cottonseed
COMAGGR TOTMEAL + 0813500 'Meal, Sunflowerseed
COMAGGR TOTMEAL + 0813600 'Meal, Rapeseed
COMAGGR TOTMEAL + 0813700 'Meal, Copra
COMAGGR TOTMEAL + 0813800 'Meal, Palm Kernel
COMAGGR TOTMEAL + 0814200 'Meal, Fish
! Cotton, bales
COMAGGR COTBALE + 2631000 'Cotton
! Total grains
COMAGGR TOTGRNS + 0430000 'Barley
COMAGGR TOTGRNS + 0440000 'Corn
COMAGGR TOTGRNS + 0451000 'Rye
COMAGGR TOTGRNS + 0452000 'Oats
COMAGGR TOTGRNS + 0459100 'Millet
COMAGGR TOTGRNS + 0459200 'Sorghum
COMAGGR TOTGRNS + 0459900 'Mixed Grains
COMAGGR TOTGRNS + 0410000 'Wheat
COMAGGR TOTGRNS + 0422110 'Rice
! ------- ------- - ------- ......