| 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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