Code

index.js

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+
+const {parseString} = require('xml2js')
+const fs = require('fs')
+
+const settings = JSON.parse(fs.readFileSync("settings.json"))
+console.log("Loaded configuration")
+//console.log(settings)
+//console.log(process.argv)
+fs.readFile(settings.fileName,(err,data)=>{
+    if(err){
+        throw new Error(err.code,": Could not read file. Try again.:",err.name)
+    }
+    console.log(`Reading ${settings.fileName}`)
+    parseString(data,(err,res)=>{
+        if(err){
+            throw new Error(err.code,": Error parsing file.:",err.name)
+        }
+
+        console.log(`Parsing ${settings.fileName}`)
+        console.log("Model: ",res.flashing.header[0].phone_model[0].$.model)
+
+        // Store steps
+        const steps = res.flashing.steps[0]
+        //console.log(steps.$.interface)
+        if(steps.$.interface!=="AP") {
+            throw new Error("Does not look like servicefile.xml. Aborting.")
+        }
+        let sScript = settings.scriptConfig.env[settings.defaultMode].preconfig + '\n'
+        sScript+= `${settings.scriptConfig.env[settings.defaultMode].commentPre} Generated for ${res.flashing.header[0].phone_model[0].$.model} \n`
+        steps.step.forEach(e=>{
+            switch(e.$.operation){
+                case "oem":
+                case "getvar":
+                    sScript += (`${settings.scriptConfig.general.command} ${e.$.operation} ${e.$.var}`) +'\n'
+                    break;
+                case "flash":
+                    sScript += (`${settings.scriptConfig.general.command} ${e.$.operation} ${e.$.partition} ${e.$.filename}`) +'\n'
+                    break;
+                case "erase":
+                    sScript += (`${settings.scriptConfig.general.command} ${e.$.operation} ${e.$.partition}`) +'\n'
+                    break;
+                default:
+                    throw new Error(`Unkown: ${e.$.operation}`)
+            }
+        })
+        fs.writeFile(settings.serviceScript+settings.scriptConfig.env[settings.defaultMode].extension,sScript,{mode:0o765},(err)=>{
+            if(err){
+                throw new Error(`${err.errno}: Error Writing Script: ${err.name}`)
+            }
+            console.log("Done")
+        })
+        //console.log(sScript)
+    })
+})

serviceScript.sh

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+#!/bin/bash
+# Generated for ahannah 
+fastboot getvar max-sparse-size
+fastboot oem fb_mode_set
+fastboot flash partition gpt.bin
+fastboot flash bootloader bootloader.img
+fastboot flash modem NON-HLOS.bin
+fastboot flash fsg fsg.mbn
+fastboot erase modemst1
+fastboot erase modemst2
+fastboot flash dsp adspso.bin
+fastboot flash logo logo.bin
+fastboot flash boot boot.img
+fastboot flash recovery recovery.img
+fastboot flash system system.img_sparsechunk.0
+fastboot flash system system.img_sparsechunk.1
+fastboot flash system system.img_sparsechunk.2
+fastboot flash system system.img_sparsechunk.3
+fastboot flash system system.img_sparsechunk.4
+fastboot flash vendor vendor.img
+fastboot flash oem oem.img
+fastboot erase DDR
+fastboot oem fb_mode_clear

settings.json

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+{
+    "defaultMode": "0",
+    "scriptConfig":{
+        "general":{
+            "command":"fastboot"
+        },
+        "env":[ 
+        {
+            "name":"sh",
+            "preconfig":"#!/bin/bash",
+            "extension":".sh",
+            "commentPre":"#"
+        },
+        {
+            "name":"batch",
+            "preconfig":"@echo off",
+            "extension":".bat",
+            "commentPre":"::"
+        }]
+    },
+    "fileName":"servicefile.xml",
+    "serviceScript": "serviceScript"
+}