zs/zs_ext.go
2015-08-30 14:42:22 +02:00

103 lines
2.3 KiB
Go

package main
import (
"bytes"
"os"
"strconv"
"strings"
"time"
"github.com/drhodes/golorem"
"github.com/google/gxui/math"
"github.com/jaytaylor/html2text"
)
// zs var <filename> -- returns list of variables and their values
// zs var <filename> <var...> -- returns list of variable values
func Var(args []string) string {
if len(args) == 0 {
return "var: filename expected"
} else {
s := ""
if vars, _, err := md(args[0], globals()); err != nil {
return "var: " + err.Error()
} else {
if len(args) > 1 {
for _, a := range args[1:] {
s = s + vars[a] + "\n"
}
} else {
for k, v := range vars {
s = s + k + ":" + v + "\n"
}
}
}
return strings.TrimSpace(s)
}
}
// zs lorem <n> -- returns <n> random lorem ipsum sentences
func Lorem(args []string) string {
if len(args) > 1 {
return "lorem: invalid usage"
}
if len(args) == 0 {
return lorem.Paragraph(5, 5)
}
if n, err := strconv.Atoi(args[0]); err == nil {
return lorem.Paragraph(n, n)
} else {
return "lorem: " + err.Error()
}
}
// zs datefmt <fmt> <date> -- returns formatted date from unix time
func DateFmt(args []string) string {
if len(args) == 0 || len(args) > 2 {
return "datefmt: invalid usage"
}
if n, err := strconv.ParseInt(args[1], 10, 64); err == nil {
return time.Unix(n, 0).Format(args[0])
} else {
return "datefmt: " + err.Error()
}
}
// zs dateparse <fmt> <date> -- returns unix time from the formatted date
func DateParse(args []string) string {
if len(args) == 0 || len(args) > 2 {
return "dateparse: invalid usage"
}
if d, err := time.Parse(args[0], args[1]); err != nil {
return "dateparse: " + err.Error()
} else {
return strconv.FormatInt(d.Unix(), 10)
}
}
// zs wc <file> -- returns word count in the file (markdown, html or amber)
func WordCount(args []string) int {
if os.Getenv("ZS_RECURSION") != "" {
return 0
}
if len(args) != 1 {
return 0
}
os.Setenv("ZS_RECURSION", "1")
out := &bytes.Buffer{}
if err := build(args[0], out, builtins(), globals()); err != nil {
return 0
}
if s, err := html2text.FromString(string(out.Bytes())); err != nil {
return 0
} else {
return len(strings.Fields(s))
}
}
// zs timetoread <file> -- returns number of minutes required to read the text
func TimeToRead(args []string) int {
wc := WordCount(args)
return int(math.Round(float64(wc) / float64(200)))
}