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-rw-r--r--src/test/util_tests.cpp11
-rw-r--r--src/util.cpp35
-rw-r--r--src/util.h5
3 files changed, 51 insertions, 0 deletions
diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp
index 0e53a57593..0b071361d8 100644
--- a/src/test/util_tests.cpp
+++ b/src/test/util_tests.cpp
@@ -351,4 +351,15 @@ BOOST_AUTO_TEST_CASE(test_ParseInt32)
BOOST_CHECK(!ParseInt32("32482348723847471234", NULL));
}
+BOOST_AUTO_TEST_CASE(test_FormatParagraph)
+{
+ BOOST_CHECK_EQUAL(FormatParagraph("", 79, 0), "");
+ BOOST_CHECK_EQUAL(FormatParagraph("test", 79, 0), "test");
+ BOOST_CHECK_EQUAL(FormatParagraph(" test", 79, 0), "test");
+ BOOST_CHECK_EQUAL(FormatParagraph("test test", 79, 0), "test test");
+ BOOST_CHECK_EQUAL(FormatParagraph("test test", 4, 0), "test\ntest");
+ BOOST_CHECK_EQUAL(FormatParagraph("testerde test ", 4, 0), "testerde\ntest");
+ BOOST_CHECK_EQUAL(FormatParagraph("test test", 4, 4), "test\n test");
+}
+
BOOST_AUTO_TEST_SUITE_END()
diff --git a/src/util.cpp b/src/util.cpp
index cccf2df484..3e3dabb678 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -1407,3 +1407,38 @@ std::string DateTimeStrFormat(const char* pszFormat, int64_t nTime)
ss << boost::posix_time::from_time_t(nTime);
return ss.str();
}
+
+std::string FormatParagraph(const std::string in, size_t width, size_t indent)
+{
+ std::stringstream out;
+ size_t col = 0;
+ size_t ptr = 0;
+ while(ptr < in.size())
+ {
+ // Find beginning of next word
+ ptr = in.find_first_not_of(' ', ptr);
+ if (ptr == std::string::npos)
+ break;
+ // Find end of next word
+ size_t endword = in.find_first_of(' ', ptr);
+ if (endword == std::string::npos)
+ endword = in.size();
+ // Add newline and indentation if this wraps over the allowed width
+ if (col > 0)
+ {
+ if ((col + endword - ptr) > width)
+ {
+ out << '\n';
+ for(size_t i=0; i<indent; ++i)
+ out << ' ';
+ col = 0;
+ } else
+ out << ' ';
+ }
+ // Append word
+ out << in.substr(ptr, endword - ptr);
+ col += endword - ptr;
+ ptr = endword;
+ }
+ return out.str();
+}
diff --git a/src/util.h b/src/util.h
index e070365790..da1810a3d3 100644
--- a/src/util.h
+++ b/src/util.h
@@ -286,6 +286,11 @@ inline std::string HexStr(const T& vch, bool fSpaces=false)
return HexStr(vch.begin(), vch.end(), fSpaces);
}
+/** Format a paragraph of text to a fixed width, adding spaces for
+ * indentation to any added line.
+ */
+std::string FormatParagraph(const std::string in, size_t width=79, size_t indent=0);
+
inline int64_t GetPerformanceCounter()
{
int64_t nCounter = 0;