Format.cpp File Reference

This file implements functions in Format.h. More...

#include <string>
#include <regex>
#include "Format.h"
#include "Config.h"
#include "Enums.h"
#include "Utils.h"

Functions
string	indentAllLinesInString (string s)
	Indents (puts 4 spaces) before all lines in a string.
string	replaceHashIdsWithLinks (string pullRequestBody)
	Replaces all plain text hash ids (issue ids and pull request ids (#2777)) with links to these issues/pull requests on GitHub.
string	replaceCommitShasWithLinks (string pullRequestBody)
	Replaces all plain text commit SHAs (e.g., 219c2149) with links to these commits on GitHub.
string	removeExtraNewLines (string pullRequestBody)
	Remove extra new lines in retrieved PR description to make it look identical to the PR description on GitHub.
string	formatPullRequestBody (string pullRequestBody)
	Makes the formatting of the retrieved PR body look like the PR on GitHub.
string	convertConventionalCommitTitleToReleaseNoteTitle (string conventionalCommitTitle, CommitTypeMatchResults matchResult, string markdownPrefix)
	Converts the given conventional commit title to a better markdown title that could be used in the release notes Example: "fix: fixed bug X" gets converted to "### Fixed bug X".

Variables
Config	config

Detailed Description

This file implements functions in Format.h.

Author

Ahmed Khaled

Function Documentation

convertConventionalCommitTitleToReleaseNoteTitle()

string convertConventionalCommitTitleToReleaseNoteTitle	(	string	conventionalCommitTitle,
		CommitTypeMatchResults	matchResult,
		string	markdownPrefix )

Converts the given conventional commit title to a better markdown title that could be used in the release notes Example: "fix: fixed bug X" gets converted to "### Fixed bug X".

Parameters

conventionalCommitTitle	The conventional commit title
matchResult	CommitTypeMatchResult that this title got with it's conventional commit type (has subcategory or no)
markdownPrefix	The markdown prefix (e.g. -, ##, ###, etc.) that should be added before the release note title

Returns

The improved markdown title

                                                                               {
    string subCategoryText = "";
 
    if (matchResult == CommitTypeMatchResults::MatchWithSubCategory) {
        size_t startPos = conventionalCommitTitle.find("(") + 1;
        // Adding the subcategory title
        subCategoryText = "(" + conventionalCommitTitle.substr(startPos, conventionalCommitTitle.find(")") - startPos) + " Related) ";
        // Capitalizing the first letter in the subcategory
        subCategoryText[1] = toupper(subCategoryText[1]);
    }
 
    string releaseNoteTitle = "";
 
    // Removing the commit type from the conventional commit title and capitalizing the first letter
    size_t colonPosition = conventionalCommitTitle.find(":");
    if (colonPosition != string::npos) {
        releaseNoteTitle = conventionalCommitTitle.substr(colonPosition + 2);
    }
    releaseNoteTitle[0] = toupper(releaseNoteTitle[0]);
 
    // Inserting the commit type subcategory (will be empty if there is no subcategory)
    releaseNoteTitle.insert(0, subCategoryText);
 
    // Adding the markdown prefix
    releaseNoteTitle = markdownPrefix + releaseNoteTitle + "\n";
 
    return releaseNoteTitle;
}

formatPullRequestBody()

string formatPullRequestBody

(

string

pullRequestBody

)

Makes the formatting of the retrieved PR body look like the PR on GitHub.

Parameters

pullRequestBody

The original body/description of the retrieved PR

Returns

PR body/description after formatting it

                                                     {
    pullRequestBody = replaceHashIdsWithLinks(pullRequestBody);
    pullRequestBody = replaceCommitShasWithLinks(pullRequestBody);
    pullRequestBody = removeExtraNewLines(pullRequestBody);
 
    return pullRequestBody;
}

indentAllLinesInString()

string indentAllLinesInString

(

string

s

)

Indents (puts 4 spaces) before all lines in a string.

Parameters

s	The input string

Returns

The indented string

                                        {
    bool isNewLine = 1;
    string result;
    for (char c : s) {
        if (isNewLine) {
            result += "    ";
        }
        result += c;
 
        isNewLine = (c == '\n');
    }
 
    return result;
}

removeExtraNewLines()

string removeExtraNewLines

(

string

pullRequestBody

)

Remove extra new lines in retrieved PR description to make it look identical to the PR description on GitHub.

Parameters

pullRequestBody

The original body/description of the retrieved PR

Returns

PR body/description after removing extra new lines

                                                   {
    // New lines in the retrieved PR description are represented as "\r\n" and there is no problem with that
    // BUT after the script writes the retrieved PR description in the markdown file and I observed the contents of the markdown file
    // using a hexadecimal editor, I found out that for some reason an extra "\r" was added when the markdown was written, so new lines were "\r\r\n"
    // for some reason that created extra new lines, so when I tried removing this extra "\r" and I added 2 spaces before the new line "  \r\n"
    // (these 2 spaces in markdown specify that a new line should occur), it worked!
    regex pattern(R"(\r)");
    pullRequestBody = regex_replace(pullRequestBody, pattern, "  ");
 
    return pullRequestBody;
}

replaceCommitShasWithLinks()

string replaceCommitShasWithLinks

(

string

pullRequestBody

)

Replaces all plain text commit SHAs (e.g., 219c2149) with links to these commits on GitHub.

Parameters

pullRequestBody

The original body/description of the pull request to do the replacements on

Returns

Pull request body/description after performing the replacements

                                                          {
    // Here I match any commit SHA that starts at the beginning of a line or with a space or "(" before it
    // and ends with either anything other than a number or a letter or the end of the pull request body
    // the "?=" is a regex lookahead which detects this pattern but doesn't include it in the match
    // I am using this specific regex pattern based on how GitHub markdown interprets commit SHAs
    regex commitShaPattern(R"((^|[ (])([0-9a-f]{6,40})(?=[^0-9a-zA-Z]|$))");
 
    string result = pullRequestBody;
    size_t numberOfNewCharactersAdded = 0;
    sregex_iterator firstSha(pullRequestBody.begin(), pullRequestBody.end(), commitShaPattern);
    sregex_iterator lastSha;
 
    for (sregex_iterator i = firstSha; i != lastSha; i++)
    {
        smatch currentShaMatch = *i;
        // Here I have the number "2" as a parameter in the below functions since I am interested in the second capture group
        // meaning the second "()" in the regex pattern which is the commit SHA itself
        string currentSha = currentShaMatch.str(2);
        result.erase(currentShaMatch.position(2) + numberOfNewCharactersAdded, currentShaMatch.length(2));
        result.insert(currentShaMatch.position(2) + numberOfNewCharactersAdded, "[" + currentSha.substr(0, 6) + "](" + config.repoCommitsUrl + currentSha + ")");
        numberOfNewCharactersAdded += 4 + config.repoCommitsUrl.length() + 6;
    }
 
    return result;
}

replaceHashIdsWithLinks()

string replaceHashIdsWithLinks

(

string

pullRequestBody

)

Replaces all plain text hash ids (issue ids and pull request ids (#2777)) with links to these issues/pull requests on GitHub.

Parameters

pullRequestBody

The original body/description of the pull request to do the replacements on

Returns

Pull request body/description after performing the replacements

                                                       {
    // The first brackets are not considered a capture group, they are a must when adding "R" to define this as a *raw string literal*
    // We add this "R" to write regex patterns easier and increase readability by not needing to escape back slashes
    regex hashIdPattern(R"(#(\d+))");
 
    string result = pullRequestBody;
    size_t numberOfNewCharactersAdded = 0;
    sregex_iterator firstHashId(pullRequestBody.begin(), pullRequestBody.end(), hashIdPattern);
    // This is an end of sequence iterator
    sregex_iterator lastHashId;
 
    for (sregex_iterator i = firstHashId; i != lastHashId; i++) {
        smatch currentHashIdMatch = *i;
        // I get from my current match the first capture group (brackets) of my pattern (\d+) which only contains the numerical id in the hash id
        string currentNumericId = currentHashIdMatch.str(1);
        // I remove the old hash id and create a new markdown link using it and insert the new link in its place
        result.erase(currentHashIdMatch.position() + numberOfNewCharactersAdded, currentHashIdMatch.length());
        result.insert(currentHashIdMatch.position() + numberOfNewCharactersAdded, "[#" + currentNumericId + "](" + config.repoIssuesUrl + currentNumericId + ")");
        // Regex smatch.position() was assigned before we replaced hash ids with urls
        // So we must account for that by counting number of new characters we have added, "4" is for the characters "[]()"
        numberOfNewCharactersAdded += 4 + config.repoIssuesUrl.length() + currentNumericId.length();
    }
 
    return result;
};

Variable Documentation

config

Config config

extern