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1 library(getopt)
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2 library(rmarkdown)
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3 library(htmltools)
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4 library(dplyr)
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5
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6 ##============ Sink warnings and errors to a file ==============
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7 ## use the sink() function to wrap all code within it.
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8 ##==============================================================
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9 zz = file('warnings_and_errors.txt')
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10 sink(zz)
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11 sink(zz, type = 'message')
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12 ##---------below is the code for rendering .Rmd templates-----
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13
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14 ##=============STEP 1: handle command line arguments==========
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15 ##
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16 ##============================================================
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17 # column 1: the long flag name
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18 # column 2: the short flag alias. A SINGLE character string
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19 # column 3: argument mask
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20 # 0: no argument
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21 # 1: argument required
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22 # 2: argument is optional
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23 # column 4: date type to which the flag's argument shall be cast.
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24 # possible values: logical, integer, double, complex, character.
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25 #-------------------------------------------------------------
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26 #++++++++++++++++++++ Best practice ++++++++++++++++++++++++++
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27 # 1. short flag alias should match the flag in the command section in the XML file.
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28 # 2. long flag name can be any legal R variable names
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29 # 3. two names in args_list can have common string but one name should not be a part of another name.
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30 # for example, one name is "ECHO", if another name is "ECHO_XXX", it will cause problems.
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31 #+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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32 args_list=list()
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33 ##------- 1. input data ---------------------
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34 args_list$ECHO = c('echo', 'e', '1', 'character')
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35 ##--------2. output report and outputs --------------
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36 args_list$REPORT_HTML = c('report_html', 'r', '1', 'character')
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37 args_list$REPORT_DIR = c('report_dir', 'd', '1', 'character')
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38 args_list$SINK_MESSAGE = c('sink_message', 's', '1', 'character')
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39 ##--------3. .Rmd templates in the tool directory ----------
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40 args_list$TOOL_TEMPLATE_RMD = c('tool_template_rmd', 't', '1', 'character')
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41 ##-----------------------------------------------------------
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42 opt = getopt(t(as.data.frame(args_list)))
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43
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44
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45
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46 ##=======STEP 2: create report directory (optional)==========
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47 ##
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48 ##===========================================================
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49 dir.create(opt$report_dir)
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50
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51 ##=STEP 3: replace placeholders in .Rmd with argument values=
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52 ##
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53 ##===========================================================
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54 #++ need to replace placeholders with args values one by one+
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55 readLines(opt$tool_template_rmd) %>%
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56 (function(x) {
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57 gsub('ECHO', opt$echo, x)
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58 }) %>%
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59 (function(x) {
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60 gsub('REPORT_DIR', opt$output_dir, x)
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61 }) %>%
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62 (function(x) {
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63 fileConn = file('tool_template.Rmd')
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64 writeLines(x, con=fileConn)
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65 close(fileConn)
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66 })
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67
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68
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69 ##=============STEP 4: render .Rmd templates=================
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70 ##
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71 ##===========================================================
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72 render('tool_template.Rmd', output_file = opt$report_html)
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73
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74
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75 ##--------end of code rendering .Rmd templates----------------
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76 sink()
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77 ##=========== End of sinking output=============================
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