1 | # common.R - Shared R functions.
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2 |
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3 | # So tibble doesn't print ANSI char to text files
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4 | # https://github.com/r-lib/crayon/issues/96
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5 | MaybeDisableColor = function(f) {
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6 | if (!isatty(f)) {
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7 | options(crayon.enabled = F)
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8 | }
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9 | }
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10 |
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11 | # Disable it globally
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12 | MaybeDisableColor(stdout())
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13 |
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14 | Log = function(fmt, ...) {
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15 | cat(sprintf(fmt, ...))
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16 | cat('\n')
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17 | }
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18 |
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19 | Banner = function(fmt, ...) {
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20 | cat('===== '); Log(fmt, ...)
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21 | cat('\n')
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22 | }
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23 |
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24 | ShowFrame = function(description, df) {
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25 | Log(description)
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26 | print(df)
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27 | Log('')
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28 | }
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29 |
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30 | ShowValue = function(msg, ...) {
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31 | cat('-- '); Log(msg, ...)
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32 | Log('')
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33 | }
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34 |
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35 | # Same precision for all columns.
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36 | SamePrecision = function(precision = 1) {
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37 | return(function(column_name) {
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38 | precision
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39 | })
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40 | }
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41 |
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42 | # Precision by column.
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43 | ColumnPrecision = function(precision_map, default = 1) {
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44 | return(function(column_name) {
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45 | p = precision_map[[column_name]]
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46 | if (is.null(p)) {
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47 | default
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48 | } else {
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49 | p
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50 | }
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51 | })
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52 | }
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53 |
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54 | # Write a CSV file along with a schema.
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55 | #
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56 | # precision: list(column name -> integer precision)
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57 | writeCsv = function(table, prefix, precision_func = NULL, tsv = F) {
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58 | if (tsv) {
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59 | data_out_path = paste0(prefix, '.tsv')
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60 | write.table(table, data_out_path, row.names = F, sep = '\t', quote = F)
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61 | } else {
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62 | data_out_path = paste0(prefix, '.csv')
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63 | write.csv(table, data_out_path, row.names = F)
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64 | }
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65 |
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66 | getFieldType = function(field_name) { typeof(table[[field_name]]) }
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67 | types_list = lapply(names(table), getFieldType)
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68 |
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69 | if (is.null(precision_func)) {
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70 | precision_func = function(column_name) { 1 }
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71 | }
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72 | precision_list = lapply(names(table), precision_func)
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73 |
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74 | #print(precision_list)
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75 |
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76 | schema = tibble(
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77 | column_name = names(table),
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78 | type = as.character(types_list),
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79 | precision = as.character(precision_list)
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80 | )
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81 | if (tsv) {
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82 | schema_out_path = paste0(prefix, '.schema.tsv')
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83 | write.table(schema, schema_out_path, row.names = F, sep = '\t', quote = F)
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84 | } else {
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85 | schema_out_path = paste0(prefix, '.schema.csv')
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86 | write.csv(schema, schema_out_path, row.names = F)
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87 | }
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88 | }
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89 |
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90 | readTsv = function(path) {
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91 | # quote = '' means disable quoting
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92 | read.table(path, header = T, sep = '\t', quote = '')
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93 | }
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94 |
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95 | writeTsv = function(table, prefix, precision_func = NULL) {
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96 | writeCsv(table, prefix, precision_func = precision_func, tsv = T)
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97 | }
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98 |
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