cmStringAlgorithms: Add cmStrToLong and cmStrToULong

This adds the following functions to cmStringAlgorithms:
- `cmStrToLong`: moved from `cmSystemTools::StringToLong`
- `cmStrToULong`: moved from `cmSystemTools::StringToULong`

Overloads of the given functions for `std::string` are added as well.

2 files changed, 35 insertions, 16 deletions

diff --git a/Tests/CMakeLib/testStringAlgorithms.cxx b/Tests/CMakeLib/testStringAlgorithms.cxx
index 55d2a8f..3b18d0d 100644
--- a/Tests/CMakeLib/testStringAlgorithms.cxx
+++ b/Tests/CMakeLib/testStringAlgorithms.cxx
@@ -167,5 +167,40 @@ int testStringAlgorithms(int /*unused*/, char* /*unused*/ [])
     assert_ok(!cmHasLiteralSuffix(str, "ab"), "cmHasLiteralPrefix string not");
   }
 
+  // ----------------------------------------------------------------------
+  // Test cmStrToLong
+  {
+    long value;
+    assert_ok(cmStrToLong("1", &value) && value == 1,
+              "cmStrToLong parses a positive decimal integer.");
+    assert_ok(cmStrToLong(" 1", &value) && value == 1,
+              "cmStrToLong parses a decimal integer after whitespace.");
+
+    assert_ok(cmStrToLong("-1", &value) && value == -1,
+              "cmStrToLong parses a negative decimal integer.");
+    assert_ok(
+      cmStrToLong(" -1", &value) && value == -1,
+      "cmStrToLong parses a negative decimal integer after whitespace.");
+
+    assert_ok(!cmStrToLong("1x", &value),
+              "cmStrToLong rejects trailing content.");
+  }
+
+  // ----------------------------------------------------------------------
+  // Test cmStrToULong
+  {
+    unsigned long value;
+    assert_ok(cmStrToULong("1", &value) && value == 1,
+              "cmStrToULong parses a decimal integer.");
+    assert_ok(cmStrToULong(" 1", &value) && value == 1,
+              "cmStrToULong parses a decimal integer after whitespace.");
+    assert_ok(!cmStrToULong("-1", &value),
+              "cmStrToULong rejects a negative number.");
+    assert_ok(!cmStrToULong(" -1", &value),
+              "cmStrToULong rejects a negative number after whitespace.");
+    assert_ok(!cmStrToULong("1x", &value),
+              "cmStrToULong rejects trailing content.");
+  }
+
   return failed;
 }
diff --git a/Tests/CMakeLib/testSystemTools.cxx b/Tests/CMakeLib/testSystemTools.cxx
index 121e639..0a757df 100644
--- a/Tests/CMakeLib/testSystemTools.cxx
+++ b/Tests/CMakeLib/testSystemTools.cxx
@@ -94,21 +94,5 @@ int testSystemTools(int /*unused*/, char* /*unused*/ [])
     cmPassed("cmSystemTools::strverscmp working");
   }
 
-  // ----------------------------------------------------------------------
-  // Test cmSystemTools::StringToULong
-  {
-    unsigned long value;
-    cmAssert(cmSystemTools::StringToULong("1", &value) && value == 1,
-             "StringToULong parses a decimal integer.");
-    cmAssert(cmSystemTools::StringToULong(" 1", &value) && value == 1,
-             "StringToULong parses a decimal integer after whitespace.");
-    cmAssert(!cmSystemTools::StringToULong("-1", &value),
-             "StringToULong rejects a negative number.");
-    cmAssert(!cmSystemTools::StringToULong(" -1", &value),
-             "StringToULong rejects a negative number after whitespace.");
-    cmAssert(!cmSystemTools::StringToULong("1x", &value),
-             "StringToULong rejects trailing content.");
-  }
-
   return failed;
 }