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1
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const debug = require('debug')('mdprepare:processFile') |
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2
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const {execSync} = require('child_process') |
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3
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const fs = require('fs') |
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4
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const os = require('os') |
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5
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const path = require('path') |
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6
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const h = require('./helpers.js') |
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7
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8
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export default function (filePath, clear) { |
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9
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// this function accepts a markdown filename and runs any mdprepare code which is embedded in that file |
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10
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debug(filePath) |
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11
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try { |
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12
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var txt = fs.readFileSync(filePath, 'utf8') |
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13
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} catch (err) { |
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14
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throw Error('file not found') |
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15
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} |
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16
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try { |
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17
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let p = processText(txt, clear, path.dirname(path.resolve(process.cwd(), filePath))) |
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18
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fs.writeFileSync(filePath, p) |
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19
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} catch (err) { |
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20
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throw Error('unable to write to file') |
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21
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} |
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22
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return true |
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23
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} |
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24
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25
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export function processText (txt, clear, fileDirName) { |
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26
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let posn = 0 |
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27
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let r = '' |
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28
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let x |
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29
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let y |
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30
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let t |
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31
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let frm |
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32
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let eolIsCRLF = (txt.indexOf('\r\n') !== -1) |
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33
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while (true) { |
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34
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x = h.findMdpCode(txt, posn) |
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35
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y = h.findMdpInsert(txt, posn) |
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36
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t = h.earlierOf(x, y) |
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37
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if (t.start === -1) { |
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38
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r = r + txt.substring(posn) |
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39
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break |
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40
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} else { |
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41
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r = r + txt.substring(posn, t.internalStart) |
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42
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frm = t.internalStart + t.internalLength |
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43
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analyseCommandString(t) |
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44
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if (t.info.cliCommand === 'ERROR: mdpInsert command not found') { |
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45
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// the mdpInsert command was not present so we don't insert or remove anything, just leave as is |
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46
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r = r + txt.substr(t.internalStart, t.internalLength) |
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47
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} else { |
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48
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if (clear !== true) { |
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49
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let insertText = t.prepend + runCliCmd(t.info.cliCommand, fileDirName) |
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50
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if (insertText.substr(-1) !== '\n' && t.postpend.length > 0) { insertText += '\n' } |
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51
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insertText += t.postpend |
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52
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r = r + h.replaceLineEndings(insertText, eolIsCRLF) |
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53
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} |
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54
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if (r.substr(-1) === '\n') { |
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55
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// we don't want to introduce 2 CRLFs or LFs so remove all lines between the start and end lines |
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56
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if (txt.substr(frm, 1) === '\r') { frm++ } |
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57
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/* istanbul ignore else */ |
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58
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if (txt.substr(frm, 1) === '\n') { frm++ } |
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59
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} |
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60
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} |
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61
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posn = t.start + t.length |
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62
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r = r + txt.substring(frm, posn) |
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63
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} |
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64
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} |
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65
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return r |
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66
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} |
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67
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68
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function analyseCommandString (t) { |
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69
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// looks at the command string, checks it is a valid mdpInsert and populates .cli, .prepend and .postpend |
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70
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if (typeof t.info === 'undefined') { t.info = {} } |
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71
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let x = t.commandString.indexOf('mdpInsert ') |
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72
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if (x === -1) { |
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73
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t.info.cliCommand = 'ERROR: mdpInsert command not found' |
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74
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return |
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75
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} |
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76
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let regex = /mdpInsert ((`{3,}|~{3,})[^ ]*) / |
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77
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let regexResult = regex.exec(t.commandString) |
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78
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if (regexResult === null) { |
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79
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t.info.cliCommand = t.commandString.substr(x + 10) |
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80
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t.prepend = '' |
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81
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t.postpend = '' |
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82
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} else { |
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83
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t.info.cliCommand = t.commandString.substr(x + regexResult[0].length) |
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84
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t.prepend = regexResult[1] + '\n' |
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85
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t.postpend = regexResult[2] |
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86
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} |
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87
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} |
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88
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89
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export function runCliCmd (str, wDirName) { |
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90
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// wDirName is either an absolute path or a relative path to the directory node was run from |
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91
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let cmd = crossPlatformCmds(str) |
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92
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try { |
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93
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return execSync(cmd, {cwd: wDirName}) |
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94
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} catch (err) { |
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95
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return 'ERROR: ' + err.message |
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96
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} |
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97
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} |
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98
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99
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function crossPlatformCmds (cmd) { |
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100
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// does limited cross platform translation of limited commands |
|
101
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let r = cmd |
|
102
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/* istanbul ignore if */ |
|
103
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if (os.platform() === 'win32') { |
|
104
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if (cmd.substr(0, 4) === 'cat ') { |
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105
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r = r.replace('cat ', 'type ') |
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106
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r = r.replace(/\//g, '\\') |
|
107
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} |
|
108
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} |
|
109
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return r |
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110
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} |
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111
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bkp7 /
mdprepare
