Mercurial > yakumo_izuru > aya

annotate zs.go @ 23:40f55059fbfa draft

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fixed output file names in html pages, fixed amber function bindings, replaced print command with build, fixed plugin functions, implemented zs and exec functions
author zaitsev.serge
date Sun, 30 Aug 2015 12:20:35 +0000
parents f5627d4212a3
children d052f3a44195
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1 package main
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2
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3 import (
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4 "bytes"
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5 "fmt"
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6 "io"
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7 "io/ioutil"
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8 "log"
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9 "os"
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10 "path"
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11 "path/filepath"
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12 "strings"
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13 "text/template"
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14 "time"
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15
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f5627d4212a3 restored the original amber since my issue has been fixed
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16 "github.com/eknkc/amber"
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17 "github.com/russross/blackfriday"
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18 "github.com/yosssi/gcss"
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19 )
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20
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21 const (
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22 ZSDIR = ".zs"
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23 PUBDIR = ".pub"
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24 )
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25
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26 type Vars map[string]string
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27 type Funcs template.FuncMap
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29 // Parses markdown content. Returns parsed header variables and content
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30 func md(path string, globals Vars) (Vars, string, error) {
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31 b, err := ioutil.ReadFile(path)
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32 if err != nil {
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33 return nil, "", err
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34 }
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35 s := string(b)
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36 url := path[:len(path)-len(filepath.Ext(path))] + ".html"
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37 v := Vars{
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38 "file": path,
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39 "url": url,
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40 "output": filepath.Join(PUBDIR, url),
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41 }
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42 if _, err := os.Stat(filepath.Join(ZSDIR, "layout.amber")); err == nil {
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43 v["layout"] = "layout.amber"
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44 } else {
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45 v["layout"] = "layout.html"
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46 }
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47
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48 if info, err := os.Stat(path); err == nil {
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49 v["date"] = info.ModTime().Format("02-01-2006")
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50 }
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51 for name, value := range globals {
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52 v[name] = value
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53 }
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54 if strings.Index(s, "\n\n") == -1 {
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55 return v, s, nil
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56 }
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57 header, body := split2(s, "\n\n")
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58 for _, line := range strings.Split(header, "\n") {
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59 key, value := split2(line, ":")
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60 v[strings.ToLower(strings.TrimSpace(key))] = strings.TrimSpace(value)
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61 }
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62 if strings.HasPrefix(v["url"], "./") {
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63 v["url"] = v["url"][2:]
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64 }
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65 return v, body, nil
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66 }
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67
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68 // Use standard Go templates
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69 func render(s string, funcs Funcs, vars Vars) (string, error) {
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70 f := Funcs{}
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71 for k, v := range funcs {
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72 f[k] = v
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73 }
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74 for k, v := range vars {
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75 f[k] = varFunc(v)
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76 }
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77 // Plugin functions
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78 files, _ := ioutil.ReadDir(ZSDIR)
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79 for _, file := range files {
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80 if !file.IsDir() {
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81 name := file.Name()
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82 if !strings.HasSuffix(name, ".html") && !strings.HasSuffix(name, ".amber") {
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83 f[strings.TrimSuffix(name, filepath.Ext(name))] = pluginFunc(name, vars)
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84 }
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85 }
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86 }
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87
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88 tmpl, err := template.New("").Funcs(template.FuncMap(f)).Parse(s)
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89 if err != nil {
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90 return "", err
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91 }
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92 out := &bytes.Buffer{}
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93 if err := tmpl.Execute(out, vars); err != nil {
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94 return "", err
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95 }
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96 return string(out.Bytes()), nil
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97 }
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98
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99 // Renders markdown with the given layout into html expanding all the macros
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100 func buildMarkdown(path string, w io.Writer, funcs Funcs, vars Vars) error {
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101 v, body, err := md(path, vars)
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102 if err != nil {
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103 return err
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104 }
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105 content, err := render(body, funcs, v)
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106 if err != nil {
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107 return err
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108 }
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109 v["content"] = string(blackfriday.MarkdownBasic([]byte(content)))
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110 if w == nil {
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111 out, err := os.Create(filepath.Join(PUBDIR, renameExt(path, "", ".html")))
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112 if err != nil {
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113 return err
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114 }
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115 defer out.Close()
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116 w = out
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117 }
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118 if strings.HasSuffix(v["layout"], ".amber") {
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119 return buildAmber(filepath.Join(ZSDIR, v["layout"]), w, funcs, v)
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120 } else {
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121 return buildHTML(filepath.Join(ZSDIR, v["layout"]), w, funcs, v)
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122 }
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123 }
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124
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125 // Renders text file expanding all variable macros inside it
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126 func buildHTML(path string, w io.Writer, funcs Funcs, vars Vars) error {
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127 b, err := ioutil.ReadFile(path)
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128 if err != nil {
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129 return err
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130 }
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131 content, err := render(string(b), funcs, vars)
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132 if err != nil {
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133 return err
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134 }
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135 output := filepath.Join(PUBDIR, path)
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136 if s, ok := vars["output"]; ok {
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137 output = s
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138 }
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139 err = ioutil.WriteFile(output, []byte(content), 0666)
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140 if err != nil {
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141 return err
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142 }
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143 return nil
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144 }
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145
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146 // Renders .amber file into .html
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147 func buildAmber(path string, w io.Writer, funcs Funcs, vars Vars) error {
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148 a := amber.New()
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149 err := a.ParseFile(path)
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150 if err != nil {
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151 return err
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152 }
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153 t, err := a.Compile()
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154 if err != nil {
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155 return err
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156 }
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157 if w == nil {
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158 f, err := os.Create(filepath.Join(PUBDIR, renameExt(path, ".amber", ".html")))
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159 if err != nil {
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160 return err
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161 }
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162 defer f.Close()
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163 w = f
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164 }
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165 return t.Execute(w, vars)
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166 }
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167
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168 // Compiles .gcss into .css
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169 func buildGCSS(path string, w io.Writer) error {
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170 f, err := os.Open(path)
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171 if err != nil {
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172 return err
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173 }
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174 defer f.Close()
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175
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176 if w == nil {
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177 s := strings.TrimSuffix(path, ".gcss") + ".css"
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178 css, err := os.Create(filepath.Join(PUBDIR, s))
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179 if err != nil {
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180 return err
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181 }
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182 defer css.Close()
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183 w = css
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184 }
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185 _, err = gcss.Compile(w, f)
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186 return err
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187 }
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188
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189 // Copies file as is from path to writer
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190 func buildRaw(path string, w io.Writer) error {
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191 in, err := os.Open(path)
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192 if err != nil {
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193 return err
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194 }
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195 defer in.Close()
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196 if w == nil {
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197 if out, err := os.Create(filepath.Join(PUBDIR, path)); err != nil {
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198 return err
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199 } else {
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200 defer out.Close()
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201 w = out
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202 }
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203 }
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204 _, err = io.Copy(w, in)
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205 return err
0
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206 }
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207
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208 func build(path string, w io.Writer, funcs Funcs, vars Vars) error {
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209 ext := filepath.Ext(path)
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210 if ext == ".md" || ext == ".mkd" {
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211 return buildMarkdown(path, w, funcs, vars)
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212 } else if ext == ".html" || ext == ".xml" {
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213 return buildHTML(path, w, funcs, vars)
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214 } else if ext == ".amber" {
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215 return buildAmber(path, w, funcs, vars)
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216 } else if ext == ".gcss" {
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217 return buildGCSS(path, w)
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218 } else {
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219 return buildRaw(path, w)
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220 }
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221 }
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222
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223 func buildAll(watch bool) {
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224 lastModified := time.Unix(0, 0)
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225 modified := false
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226
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227 vars := globals()
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228 for {
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229 os.Mkdir(PUBDIR, 0755)
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230 funcs := builtins()
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231 err := filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
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232 // ignore hidden files and directories
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233 if filepath.Base(path)[0] == '.' || strings.HasPrefix(path, ".") {
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234 return nil
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235 }
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236
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237 if info.IsDir() {
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238 os.Mkdir(filepath.Join(PUBDIR, path), 0755)
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239 return nil
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240 } else if info.ModTime().After(lastModified) {
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241 if !modified {
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242 // About to be modified, so run pre-build hook
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243 // FIXME on windows it might not work well
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244 run(filepath.Join(ZSDIR, "pre"), []string{}, nil, nil)
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245 modified = true
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246 }
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247 log.Println("build: ", path)
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248 return build(path, nil, funcs, vars)
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249 }
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250 return nil
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251 })
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252 if err != nil {
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253 log.Println("ERROR:", err)
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254 }
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255 if modified {
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256 // Something was modified, so post-build hook
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257 // FIXME on windows it might not work well
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258 run(filepath.Join(ZSDIR, "post"), []string{}, nil, nil)
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259 modified = false
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260 }
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261 if !watch {
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262 break
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263 }
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264 lastModified = time.Now()
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265 time.Sleep(1 * time.Second)
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266 }
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267 }
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268
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269 func main() {
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270 if len(os.Args) == 1 {
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271 fmt.Println(os.Args[0], "<command> [args]")
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272 return
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273 }
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274 cmd := os.Args[1]
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275 args := os.Args[2:]
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276 switch cmd {
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277 case "build":
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278 buildAll(false)
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279 case "watch":
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280 buildAll(true)
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281 case "print":
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282 if len(args) != 1 {
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283 fmt.Println("ERROR: filename expected")
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284 } else {
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285 build(args[0], os.Stdout, builtins(), globals())
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286 }
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287 case "var":
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288 fmt.Println(Var(args))
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289 case "lorem":
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290 fmt.Println(Lorem(args))
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291 case "dateparse":
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292 fmt.Println(DateParse(args))
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293 case "datefmt":
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294 fmt.Println(DateFmt(args))
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295 default:
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296 err := run(path.Join(ZSDIR, cmd), args, Vars{}, os.Stdout)
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297 if err != nil {
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298 log.Println("ERROR:", err)
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299 }
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300 }
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301 }