Merge bitcoin/bitcoin#22653: refactor: Rename JoinErrors and re-use it

bb56486a17 refactor: Reuse MakeUnorderedList where possible (Hennadii Stepanov)
77a90f03ac refactor: Move MakeUnorderedList into util/string.h to make it reusable (Hennadii Stepanov)
6a5ccd65c7 scripted-diff: Rename JoinErrors in more general MakeUnorderedList (Hennadii Stepanov)

Pull request description:

  A nice `JoinErrors` utility function was introduced in https://github.com/bitcoin-core/gui/pull/379 by Russell Yanofsky.

  This PR renames this function and re-uses it across the code base.

ACKs for top commit:
  Zero-1729:
    Concept ACK bb56486a17
  theStack:
    Code-review ACK bb56486a17
  Talkless:
    utACK bb56486a17
  ryanofsky:
    Code review ACK bb56486a17. Nice deduping, thanks for this!

Tree-SHA512: 6bdbfa61f2ffa69e075f46b733f247c6d5b8486779a1dac064285a199a4bb8bc5ef44eaee37086305646b5c88eb6a11990883219a4a9140a5117ee21ed529bb9

src/qt/bitcoin.cpp

@@ -28,6 +28,7 @@
 #include <qt/utilitydialog.h>
 #include <qt/winshutdownmonitor.h>
 #include <uint256.h>
+#include <util/string.h>
 #include <util/system.h>
 #include <util/threadnames.h>
 #include <util/translation.h>
@@ -144,11 +145,6 @@ static void initTranslations(QTranslator &qtTranslatorBase, QTranslator &qtTrans
         QApplication::installTranslator(&translator);
 }
 
-static std::string JoinErrors(const std::vector<std::string>& errors)
-{
-    return Join(errors, "\n", [](const std::string& error) { return "- " + error; });
-}
-
 static bool InitSettings()
 {
     if (!gArgs.GetSettingsPath()) {
@@ -158,13 +154,13 @@ static bool InitSettings()
     std::vector<std::string> errors;
     if (!gArgs.ReadSettingsFile(&errors)) {
         bilingual_str error = _("Settings file could not be read");
-        InitError(Untranslated(strprintf("%s:\n%s\n", error.original, JoinErrors(errors))));
+        InitError(Untranslated(strprintf("%s:\n%s\n", error.original, MakeUnorderedList(errors))));
 
         QMessageBox messagebox(QMessageBox::Critical, PACKAGE_NAME, QString::fromStdString(strprintf("%s.", error.translated)), QMessageBox::Reset | QMessageBox::Abort);
         /*: Explanatory text shown on startup when the settings file cannot be read.
             Prompts user to make a choice between resetting or aborting. */
         messagebox.setInformativeText(QObject::tr("Do you want to reset settings to default values, or to abort without making changes?"));
-        messagebox.setDetailedText(QString::fromStdString(JoinErrors(errors)));
+        messagebox.setDetailedText(QString::fromStdString(MakeUnorderedList(errors)));
         messagebox.setTextFormat(Qt::PlainText);
         messagebox.setDefaultButton(QMessageBox::Reset);
         switch (messagebox.exec()) {
@@ -180,14 +176,14 @@ static bool InitSettings()
     errors.clear();
     if (!gArgs.WriteSettingsFile(&errors)) {
         bilingual_str error = _("Settings file could not be written");
-        InitError(Untranslated(strprintf("%s:\n%s\n", error.original, JoinErrors(errors))));
+        InitError(Untranslated(strprintf("%s:\n%s\n", error.original, MakeUnorderedList(errors))));
 
         QMessageBox messagebox(QMessageBox::Critical, PACKAGE_NAME, QString::fromStdString(strprintf("%s.", error.translated)), QMessageBox::Ok);
         /*: Explanatory text shown on startup when the settings file could not be written.
             Prompts user to check that we have the ability to write to the file.
             Explains that the user has the option of running without a settings file.*/
-        messagebox.setInformativeText(QObject::tr("A fatal error occured. Check that settings file is writable, or try running with -nosettings."));
-        messagebox.setDetailedText(QString::fromStdString(JoinErrors(errors)));
+        messagebox.setInformativeText(QObject::tr("A fatal error occurred. Check that settings file is writable, or try running with -nosettings."));
+        messagebox.setDetailedText(QString::fromStdString(MakeUnorderedList(errors)));
         messagebox.setTextFormat(Qt::PlainText);
         messagebox.setDefaultButton(QMessageBox::Ok);
         messagebox.exec();

src/rpc/blockchain.cpp

@@ -36,6 +36,7 @@
 #include <txmempool.h>
 #include <undo.h>
 #include <util/strencodings.h>
+#include <util/string.h>
 #include <util/system.h>
 #include <util/translation.h>
 #include <validation.h>
@@ -1328,7 +1329,7 @@ static RPCHelpMan verifychain()
                 "\nVerifies blockchain database.\n",
                 {
                     {"checklevel", RPCArg::Type::NUM, RPCArg::DefaultHint{strprintf("%d, range=0-4", DEFAULT_CHECKLEVEL)},
-                        strprintf("How thorough the block verification is:\n - %s", Join(CHECKLEVEL_DOC, "\n- "))},
+                        strprintf("How thorough the block verification is:\n%s", MakeUnorderedList(CHECKLEVEL_DOC))},
                     {"nblocks", RPCArg::Type::NUM, RPCArg::DefaultHint{strprintf("%d, 0=all", DEFAULT_CHECKBLOCKS)}, "The number of blocks to check."},
                 },
                 RPCResult{

src/util/string.h

@@ -64,6 +64,14 @@ inline std::string Join(const std::vector<std::string>& list, const std::string&
     return Join<std::string>(list, separator);
 }
 
+/**
+ * Create an unordered multi-line list of items.
+ */
+inline std::string MakeUnorderedList(const std::vector<std::string>& items)
+{
+    return Join(items, "\n", [](const std::string& item) { return "- " + item; });
+}
+
 /**
  * Check if a string does not contain any embedded NUL (\0) characters
  */

src/util/system.cpp

@@ -502,11 +502,11 @@ bool ArgsManager::InitSettings(std::string& error)
 
     std::vector<std::string> errors;
     if (!ReadSettingsFile(&errors)) {
-        error = strprintf("Failed loading settings file:\n- %s\n", Join(errors, "\n- "));
+        error = strprintf("Failed loading settings file:\n%s\n", MakeUnorderedList(errors));
         return false;
     }
     if (!WriteSettingsFile(&errors)) {
-        error = strprintf("Failed saving settings file:\n- %s\n", Join(errors, "\n- "));
+        error = strprintf("Failed saving settings file:\n%s\n", MakeUnorderedList(errors));
         return false;
     }
     return true;