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authorMichaël Ball <michael.ball@gmail.com>2017-01-07 18:07:51 +0000
committerMichaël Ball <michael.ball@gmail.com>2017-01-07 18:07:51 +0000
commitb57ee0ffc26098560202c751de9142c88d80bcc6 (patch)
tree5ed722cfc8d9a262821e5c14cc687b7fd6f6b5ab /generator
parent6068ab484fa377917514753becf61d2211460218 (diff)
parent7e0c7250e1a9afd9930fbb200c5cbd9a8095404e (diff)
Merge branch 'release/0.2.0'0.2.0
Diffstat (limited to 'generator')
-rw-r--r--generator/generator.go45
-rw-r--r--generator/generator_test.go15
2 files changed, 60 insertions, 0 deletions
diff --git a/generator/generator.go b/generator/generator.go
new file mode 100644
index 0000000..3ec5154
--- /dev/null
+++ b/generator/generator.go
@@ -0,0 +1,45 @@
+package generator
+
+import (
+ "bufio"
+ "math/rand"
+ "os"
+ "time"
+)
+
+func readLines(path string) ([]string, error) {
+ file, err := os.Open(path)
+ if err != nil {
+ return nil, err
+ }
+ defer file.Close()
+
+ var lines []string
+ scanner := bufio.NewScanner(file)
+ for scanner.Scan() {
+ lines = append(lines, scanner.Text())
+ }
+ return lines, scanner.Err()
+}
+
+// RandomWords picks numberOfWords random words from the file located at
+// wordsFile
+func RandomWords(wordsFile string, numberOfWords int) ([]string, error) {
+ rand.Seed(time.Now().UTC().UnixNano())
+
+ words, err := readLines(wordsFile)
+
+ if err != nil {
+ return nil, err
+ }
+
+ phraseWords := make([]string, numberOfWords)
+
+ for index := 0; index < numberOfWords; index++ {
+ randInt := rand.Intn((len(words) - 1))
+
+ phraseWords[index] = words[randInt]
+ }
+
+ return phraseWords, nil
+}
diff --git a/generator/generator_test.go b/generator/generator_test.go
new file mode 100644
index 0000000..4cda593
--- /dev/null
+++ b/generator/generator_test.go
@@ -0,0 +1,15 @@
+package generator
+
+import "testing"
+
+func TestRandomWords(t *testing.T) {
+ words, err := RandomWords("/usr/share/dict/words", 4)
+
+ if err != nil {
+ t.Errorf("%s", err)
+ }
+
+ if len(words) != 4 {
+ t.Errorf("RandomWords does not return the correct number of words")
+ }
+}