[llvm-objcopy] Tidy up error messages

This patch brings various error messages into line with each other, by
removing trailing full stops, and making the first letter lower-case.
This addresses https://bugs.llvm.org/show_bug.cgi?id=40859.

Reviewed by: jhenderson, rupprecht, jakehehrlich

Differential Revision: https://reviews.llvm.org/D62072

Patch by Alex Brachet

llvm-svn: 361384
diff --git a/llvm/tools/llvm-objcopy/ELF/Object.cpp b/llvm/tools/llvm-objcopy/ELF/Object.cpp
index 09d6d82..b0f7c1e 100644
--- a/llvm/tools/llvm-objcopy/ELF/Object.cpp
+++ b/llvm/tools/llvm-objcopy/ELF/Object.cpp
@@ -124,23 +124,23 @@
 void ELFSectionSizer<ELFT>::visit(DecompressedSection &Sec) {}
 
 void BinarySectionWriter::visit(const SectionIndexSection &Sec) {
-  error("Cannot write symbol section index table '" + Sec.Name + "' ");
+  error("cannot write symbol section index table '" + Sec.Name + "' ");
 }
 
 void BinarySectionWriter::visit(const SymbolTableSection &Sec) {
-  error("Cannot write symbol table '" + Sec.Name + "' out to binary");
+  error("cannot write symbol table '" + Sec.Name + "' out to binary");
 }
 
 void BinarySectionWriter::visit(const RelocationSection &Sec) {
-  error("Cannot write relocation section '" + Sec.Name + "' out to binary");
+  error("cannot write relocation section '" + Sec.Name + "' out to binary");
 }
 
 void BinarySectionWriter::visit(const GnuDebugLinkSection &Sec) {
-  error("Cannot write '" + Sec.Name + "' out to binary");
+  error("cannot write '" + Sec.Name + "' out to binary");
 }
 
 void BinarySectionWriter::visit(const GroupSection &Sec) {
-  error("Cannot write '" + Sec.Name + "' out to binary");
+  error("cannot write '" + Sec.Name + "' out to binary");
 }
 
 void SectionWriter::visit(const Section &Sec) {
@@ -202,7 +202,7 @@
 }
 
 void BinarySectionWriter::visit(const DecompressedSection &Sec) {
-  error("Cannot write compressed section '" + Sec.Name + "' ");
+  error("cannot write compressed section '" + Sec.Name + "' ");
 }
 
 void DecompressedSection::accept(SectionVisitor &Visitor) const {
@@ -222,7 +222,7 @@
 }
 
 void BinarySectionWriter::visit(const CompressedSection &Sec) {
-  error("Cannot write compressed section '" + Sec.Name + "' ");
+  error("cannot write compressed section '" + Sec.Name + "' ");
 }
 
 template <class ELFT>
@@ -433,8 +433,8 @@
     if (!AllowBrokenLinks)
       return createStringError(
           llvm::errc::invalid_argument,
-          "String table %s cannot be removed because it is "
-          "referenced by the symbol table %s",
+          "string table '%s' cannot be removed because it is "
+          "referenced by the symbol table '%s'",
           SymbolNames->Name.data(), this->Name.data());
     SymbolNames = nullptr;
   }
@@ -523,7 +523,7 @@
 
 const Symbol *SymbolTableSection::getSymbolByIndex(uint32_t Index) const {
   if (Symbols.size() <= Index)
-    error("Invalid symbol index: " + Twine(Index));
+    error("invalid symbol index: " + Twine(Index));
   return Symbols[Index].get();
 }
 
@@ -565,8 +565,8 @@
     if (!AllowBrokenLinks)
       return createStringError(
           llvm::errc::invalid_argument,
-          "Symbol table %s cannot be removed because it is "
-          "referenced by the relocation section %s.",
+          "symbol table '%s' cannot be removed because it is "
+          "referenced by the relocation section '%s'",
           Symbols->Name.data(), this->Name.data());
     Symbols = nullptr;
   }
@@ -575,7 +575,7 @@
     if (!R.RelocSymbol->DefinedIn || !ToRemove(R.RelocSymbol->DefinedIn))
       continue;
     return createStringError(llvm::errc::invalid_argument,
-                             "Section %s can't be removed: (%s+0x%" PRIx64
+                             "section '%s' cannot be removed: (%s+0x%" PRIx64
                              ") has relocation against symbol '%s'",
                              R.RelocSymbol->DefinedIn->Name.data(),
                              SecToApplyRel->Name.data(), R.Offset,
@@ -653,7 +653,7 @@
     if (ToRemove(*Reloc.RelocSymbol))
       return createStringError(
           llvm::errc::invalid_argument,
-          "not stripping symbol '%s' because it is named in a relocation.",
+          "not stripping symbol '%s' because it is named in a relocation",
           Reloc.RelocSymbol->Name.data());
   return Error::success();
 }
@@ -680,37 +680,37 @@
 }
 
 void DynamicRelocationSection::accept(MutableSectionVisitor &Visitor) {
-  Visitor.visit(*this);

-}

-

-Error DynamicRelocationSection::removeSectionReferences(

-    bool AllowBrokenLinks, function_ref<bool(const SectionBase *)> ToRemove) {

-  if (ToRemove(Symbols)) {

-    if (!AllowBrokenLinks)

-      return createStringError(

-          llvm::errc::invalid_argument,

-          "Symbol table %s cannot be removed because it is "

-          "referenced by the relocation section %s.",

-          Symbols->Name.data(), this->Name.data());

-    Symbols = nullptr;

-  }

-

-  // SecToApplyRel contains a section referenced by sh_info field. It keeps

-  // a section to which the relocation section applies. When we remove any

-  // sections we also remove their relocation sections. Since we do that much

-  // earlier, this assert should never be triggered.

-  assert(!SecToApplyRel || !ToRemove(SecToApplyRel));

-

-  return Error::success();

-}

-

-Error Section::removeSectionReferences(bool AllowBrokenDependency,

-    function_ref<bool(const SectionBase *)> ToRemove) {

-  if (ToRemove(LinkSection)) {

+  Visitor.visit(*this);
+}
+
+Error DynamicRelocationSection::removeSectionReferences(
+    bool AllowBrokenLinks, function_ref<bool(const SectionBase *)> ToRemove) {
+  if (ToRemove(Symbols)) {
+    if (!AllowBrokenLinks)
+      return createStringError(
+          llvm::errc::invalid_argument,
+          "symbol table '%s' cannot be removed because it is "
+          "referenced by the relocation section '%s'",
+          Symbols->Name.data(), this->Name.data());
+    Symbols = nullptr;
+  }
+
+  // SecToApplyRel contains a section referenced by sh_info field. It keeps
+  // a section to which the relocation section applies. When we remove any
+  // sections we also remove their relocation sections. Since we do that much
+  // earlier, this assert should never be triggered.
+  assert(!SecToApplyRel || !ToRemove(SecToApplyRel));
+
+  return Error::success();
+}
+
+Error Section::removeSectionReferences(bool AllowBrokenDependency,
+    function_ref<bool(const SectionBase *)> ToRemove) {
+  if (ToRemove(LinkSection)) {
     if (!AllowBrokenDependency)
       return createStringError(llvm::errc::invalid_argument,
-                               "Section %s cannot be removed because it is "
-                               "referenced by the section %s",
+                               "section '%s' cannot be removed because it is "
+                               "referenced by the section '%s'",
                                LinkSection->Name.data(), this->Name.data());
     LinkSection = nullptr;
   }
@@ -725,8 +725,8 @@
 Error GroupSection::removeSymbols(function_ref<bool(const Symbol &)> ToRemove) {
   if (ToRemove(*Sym))
     return createStringError(llvm::errc::invalid_argument,
-                             "Symbol %s cannot be removed because it is "
-                             "referenced by the section %s[%d].",
+                             "symbol '%s' cannot be removed because it is "
+                             "referenced by the section '%s[%d]'",
                              Sym->Name.data(), this->Name.data(), this->Index);
   return Error::success();
 }
@@ -996,24 +996,24 @@
 template <class ELFT>
 void ELFBuilder<ELFT>::initGroupSection(GroupSection *GroupSec) {
   if (GroupSec->Align % sizeof(ELF::Elf32_Word) != 0)
-    error("Invalid alignment " + Twine(GroupSec->Align) + " of group section " +
-          GroupSec->Name);
+    error("invalid alignment " + Twine(GroupSec->Align) + " of group section '" +
+          GroupSec->Name + "'");
   auto SecTable = Obj.sections();
   auto SymTab = SecTable.template getSectionOfType<SymbolTableSection>(
       GroupSec->Link,
-      "Link field value " + Twine(GroupSec->Link) + " in section " +
-          GroupSec->Name + " is invalid",
-      "Link field value " + Twine(GroupSec->Link) + " in section " +
-          GroupSec->Name + " is not a symbol table");
+      "link field value '" + Twine(GroupSec->Link) + "' in section '" +
+          GroupSec->Name + "' is invalid",
+      "link field value '" + Twine(GroupSec->Link) + "' in section '" +
+          GroupSec->Name + "' is not a symbol table");
   auto Sym = SymTab->getSymbolByIndex(GroupSec->Info);
   if (!Sym)
-    error("Info field value " + Twine(GroupSec->Info) + " in section " +
-          GroupSec->Name + " is not a valid symbol index");
+    error("info field value '" + Twine(GroupSec->Info) + "' in section '" +
+          GroupSec->Name + "' is not a valid symbol index");
   GroupSec->setSymTab(SymTab);
   GroupSec->setSymbol(Sym);
   if (GroupSec->Contents.size() % sizeof(ELF::Elf32_Word) ||
       GroupSec->Contents.empty())
-    error("The content of the section " + GroupSec->Name + " is malformed");
+    error("the content of the section " + GroupSec->Name + " is malformed");
   const ELF::Elf32_Word *Word =
       reinterpret_cast<const ELF::Elf32_Word *>(GroupSec->Contents.data());
   const ELF::Elf32_Word *End =
@@ -1022,8 +1022,8 @@
   for (; Word != End; ++Word) {
     uint32_t Index = support::endian::read32<ELFT::TargetEndianness>(Word);
     GroupSec->addMember(SecTable.getSection(
-        Index, "Group member index " + Twine(Index) + " in section " +
-                   GroupSec->Name + " is invalid"));
+        Index, "group member index " + Twine(Index) + " in section '" +
+                   GroupSec->Name + "' is invalid"));
   }
 }
 
@@ -1040,31 +1040,31 @@
 
     if (Sym.st_shndx == SHN_XINDEX) {
       if (SymTab->getShndxTable() == nullptr)
-        error("Symbol '" + Name +
-              "' has index SHN_XINDEX but no SHT_SYMTAB_SHNDX section exists.");
+        error("symbol '" + Name +
+              "' has index SHN_XINDEX but no SHT_SYMTAB_SHNDX section exists");
       if (ShndxData.data() == nullptr) {
         const Elf_Shdr &ShndxSec =
             *unwrapOrError(ElfFile.getSection(SymTab->getShndxTable()->Index));
         ShndxData = unwrapOrError(
             ElfFile.template getSectionContentsAsArray<Elf_Word>(&ShndxSec));
         if (ShndxData.size() != Symbols.size())
-          error("Symbol section index table does not have the same number of "
-                "entries as the symbol table.");
+          error("symbol section index table does not have the same number of "
+                "entries as the symbol table");
       }
       Elf_Word Index = ShndxData[&Sym - Symbols.begin()];
       DefSection = Obj.sections().getSection(
           Index,
-          "Symbol '" + Name + "' has invalid section index " + Twine(Index));
+          "symbol '" + Name + "' has invalid section index " + Twine(Index));
     } else if (Sym.st_shndx >= SHN_LORESERVE) {
       if (!isValidReservedSectionIndex(Sym.st_shndx, Obj.Machine)) {
         error(
-            "Symbol '" + Name +
+            "symbol '" + Name +
             "' has unsupported value greater than or equal to SHN_LORESERVE: " +
             Twine(Sym.st_shndx));
       }
     } else if (Sym.st_shndx != SHN_UNDEF) {
       DefSection = Obj.sections().getSection(
-          Sym.st_shndx, "Symbol '" + Name +
+          Sym.st_shndx, "symbol '" + Name +
                             "' is defined has invalid section index " +
                             Twine(Sym.st_shndx));
     }
@@ -1290,7 +1290,7 @@
     Builder.build();
     return Obj;
   }
-  error("Invalid file type");
+  error("invalid file type");
 }
 
 template <class ELFT> void ELFWriter<ELFT>::writeEhdr() {
@@ -1625,8 +1625,8 @@
   // to do that.
   if (Obj.SectionNames == nullptr && WriteSectionHeaders)
     return createStringError(llvm::errc::invalid_argument,
-                             "Cannot write section header table because "
-                             "section header string table was removed.");
+                             "cannot write section header table because "
+                             "section header string table was removed");
 
   Obj.sortSections();