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Added a columnTransform func to transform column names #37

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glenselle wants to merge 4 commits into from
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Added a columnTransform func to transform column names #37

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aa9bd2c
Added a columnTransform func to transform column names
glenselle Jan 3, 2017
8ce1181
Updated readme with usage example
glenselle Jan 3, 2017
fae418d
Fixed StandardJS formatting
glenselle Jan 3, 2017
9ed3508
Merge branch 'master' into column-name-map
glenselle Mar 4, 2017
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7 changes: 6 additions & 1 deletion Readme.md
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Original file line number Diff line number Diff line change
Expand Up @@ -71,7 +71,12 @@ The options are also passed to the underlying transform stream, so you can pass
objectMode: false,

// if set to true, uses first row as keys -> [ { column1: value1, column2: value2 }, ...]
columns: false
columns: false,

// each csv column name is optionally mapped to this so its value can be transformed
columnTransform: function(name) {
return name
}
}
```

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3 changes: 2 additions & 1 deletion csv-streamify.js
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Expand Up @@ -16,6 +16,7 @@ module.exports = function (opts, cb) {
opts.empty = opts.hasOwnProperty('empty') ? opts.empty : ''
opts.objectMode = opts.objectMode || false
opts.hasColumns = opts.columns || false
opts.columnTransform = opts.columnTransform || function (l) { return l }

// state
var state = {
Expand All @@ -41,7 +42,7 @@ function createParser (opts, state) {

if (opts.hasColumns) {
if (state.lineNo === 0) {
state._columns = state._line
state._columns = state._line.map(opts.columnTransform)
state.lineNo += 1
reset()
return
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