pcottle.learnGitBranching/src/levels/rampup/relativeRefs2.js

exports.level = {
  "goalTreeString": "{\"branches\":{\"master\":{\"target\":\"C6\",\"id\":\"master\"},\"bugFix\":{\"target\":\"C0\",\"id\":\"bugFix\"}},\"commits\":{\"C0\":{\"parents\":[],\"id\":\"C0\",\"rootCommit\":true},\"C1\":{\"parents\":[\"C0\"],\"id\":\"C1\"},\"C2\":{\"parents\":[\"C1\"],\"id\":\"C2\"},\"C3\":{\"parents\":[\"C1\"],\"id\":\"C3\"},\"C4\":{\"parents\":[\"C2\"],\"id\":\"C4\"},\"C5\":{\"parents\":[\"C3\"],\"id\":\"C5\"},\"C6\":{\"parents\":[\"C5\"],\"id\":\"C6\"}},\"HEAD\":{\"target\":\"C1\",\"id\":\"HEAD\"}}",
  "solutionCommand": "git branch -f master C6;git checkout HEAD~1;git branch -f bugFix HEAD~1",
  "startTree": "{\"branches\":{\"master\":{\"target\":\"C4\",\"id\":\"master\"},\"bugFix\":{\"target\":\"C5\",\"id\":\"bugFix\"}},\"commits\":{\"C0\":{\"parents\":[],\"id\":\"C0\",\"rootCommit\":true},\"C1\":{\"parents\":[\"C0\"],\"id\":\"C1\"},\"C2\":{\"parents\":[\"C1\"],\"id\":\"C2\"},\"C3\":{\"parents\":[\"C1\"],\"id\":\"C3\"},\"C4\":{\"parents\":[\"C2\"],\"id\":\"C4\"},\"C5\":{\"parents\":[\"C3\"],\"id\":\"C5\"},\"C6\":{\"parents\":[\"C5\"],\"id\":\"C6\"}},\"HEAD\":{\"target\":\"C2\",\"id\":\"HEAD\"}}",
  "hint": {
    "en_US": "You'll need to use at least one direct reference (hash) to complete this level",
    "zh_CN": "这一关至少要用到一次直接引用(hash)"
  },
  "name": {
    "en_US": "Relative Refs #2 (~)",
    "zh_CN": "相对引用2(~)"
  },
  "startDialog": {
    "en_US": {
      "childViews": [
        {
          "type": "ModalAlert",
          "options": {
            "markdowns": [
              "### The \"~\" operator",
              "",
              "Say you want to move a lot of levels up in the commit tree. It might be tedious to type `^` several times, so Git also has the tilde (~) operator.",
              "",
              "",
              "The tilde operator (optionally) takes in a trailing number that specifies the number of parents you would like to ascend. Let's see it in action"
            ]
          }
        },
        {
          "type": "GitDemonstrationView",
          "options": {
            "beforeMarkdowns": [
              "Let's specify a number of commits back with `~`."
            ],
            "afterMarkdowns": [
              "Boom! So concise -- relative refs are great."
            ],
            "command": "git checkout HEAD~4",
            "beforeCommand": "git commit; git commit; git commit"
          }
        },
        {
          "type": "ModalAlert",
          "options": {
            "markdowns": [
              "### Branch forcing",
              "",
              "You're an expert on relative refs now, so let's actually *use* them for something.",
              "",
              "One of the most common ways I use relative refs is to move branches around. You can directly reassign a branch to a commit with the `-f` option. So something like:",
              "",
              "`git branch -f master HEAD~3`",
              "",
              "Moves (by force) the master branch to three parents behind HEAD."
            ]
          }
        },
        {
          "type": "GitDemonstrationView",
          "options": {
            "beforeMarkdowns": [
              "Let's see that previous command in action"
            ],
            "afterMarkdowns": [
              "There we go! Relative refs gave us a concise way to refer to `C1` and branch forcing (`-f`) gave us a way to quickly move a branch to that location"
            ],
            "command": "git branch -f master HEAD~3",
            "beforeCommand": "git commit; git commit; git commit; git checkout -b bugFix"
          }
        },
        {
          "type": "ModalAlert",
          "options": {
            "markdowns": [
              "Now that you have seen relative refs and branch forcing in combination, lets use them to solve the next level.",
              "",
              "To complete this level, move `HEAD`, `master`, and `bugFix` to their goal destinations shown."
            ]
          }
        }
      ]
    },
    "zh_CN": {
      "childViews": [
        {
          "type": "ModalAlert",
          "options": {
            "markdowns": [
              "### The \"~\" operator",
              "",
              "假设需要在提交树中向上移动很多步。使用多个`^`非常无聊，所以Git也引入了波浪(~)操作符。",
              "",
              "",
              "波浪操作符后面可以（可选地）跟一个数字，指定向上移动多少次。看个例子"
            ]
          }
        },
        {
          "type": "GitDemonstrationView",
          "options": {
            "beforeMarkdowns": [
              "使用`~`一次后退多步."
            ],
            "afterMarkdowns": [
              "唰！如此简洁--相对引用就是好啊！"
            ],
            "command": "git checkout HEAD~4",
            "beforeCommand": "git commit; git commit; git commit"
          }
        },
        {
          "type": "ModalAlert",
          "options": {
            "markdowns": [
              "### Branch forcing",
              "",
              "你现在是相对引用的高手了，现在*用*他来实际做点事情。",
              "",
              "我使用相对引用最多的就是移动分支。你可以使用`-f`选项把直接让分支指向另一个提交。举个例子:",
              "",
              "`git branch -f master HEAD~3`",
              "",
              "（强制）移动master指向HEAD的第3级父提交。"
            ]
          }
        },
        {
          "type": "ModalAlert",
          "options": {
            "markdowns": [
              "要完成此关，移动`HEAD`，`master`和`bugFix`到目标所示的位置。"
            ]
          }
        }
      ]
    }
  }
};