Merge pull request #308 from tomaz82/utils

Add String and FilesSystem utils

es-core/CMakeLists.txt

@@ -69,6 +69,10 @@ set(CORE_HEADERS
 	${CMAKE_CURRENT_SOURCE_DIR}/src/resources/TextureData.h
 	${CMAKE_CURRENT_SOURCE_DIR}/src/resources/TextureDataManager.h
 
+	# Utils
+	${CMAKE_CURRENT_SOURCE_DIR}/src/utils/FileSystemUtil.h
+	${CMAKE_CURRENT_SOURCE_DIR}/src/utils/StringUtil.h
+
 	# Embedded assets (needed by ResourceManager)
 	${emulationstation-all_SOURCE_DIR}/data/Resources.h
 )
@@ -136,6 +140,10 @@ set(CORE_SOURCES
 	${CMAKE_CURRENT_SOURCE_DIR}/src/resources/TextureResource.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/src/resources/TextureData.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/src/resources/TextureDataManager.cpp
+
+	# Utils
+	${CMAKE_CURRENT_SOURCE_DIR}/src/utils/FileSystemUtil.cpp
+	${CMAKE_CURRENT_SOURCE_DIR}/src/utils/StringUtil.cpp
 )
 
 set(EMBEDDED_ASSET_SOURCES

es-core/src/StringUtil.h

@@ -1,136 +0,0 @@
-#pragma once
-#ifndef ES_CORE_STRING_UTIL_H
-#define ES_CORE_STRING_UTIL_H
-
-namespace StringUtil
-{
-	inline unsigned int chars2Unicode(const std::string& _string, size_t& _cursor)
-	{
-		const char&  c      = _string[_cursor];
-		unsigned int result = '?';
-
-		if((c & 0x80) == 0) // 0xxxxxxx, one byte character
-		{
-			// 0xxxxxxx
-			result = ((_string[_cursor++]       )      );
-		}
-		else if((c & 0xE0) == 0xC0) // 110xxxxx, two byte character
-		{
-			// 110xxxxx 10xxxxxx
-			result = ((_string[_cursor++] & 0x1F) <<  6) |
-			         ((_string[_cursor++] & 0x3F)      );
-		}
-		else if((c & 0xF0) == 0xE0) // 1110xxxx, three byte character
-		{
-			// 1110xxxx 10xxxxxx 10xxxxxx
-			result = ((_string[_cursor++] & 0x0F) << 12) |
-			         ((_string[_cursor++] & 0x3F) <<  6) |
-			         ((_string[_cursor++] & 0x3F)      );
-		}
-		else if((c & 0xF8) == 0xF0) // 11110xxx, four byte character
-		{
-			// 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
-			result = ((_string[_cursor++] & 0x07) << 18) |
-			         ((_string[_cursor++] & 0x3F) << 12) |
-			         ((_string[_cursor++] & 0x3F) <<  6) |
-			         ((_string[_cursor++] & 0x3F)      );
-		}
-		else
-		{
-			// error, invalid unicode
-			++_cursor;
-		}
-
-		return result;
-
-	} // chars2Unicode
-
-	inline std::string unicode2Chars(const unsigned int _unicode)
-	{
-		std::string result;
-
-		if(_unicode < 0x80) // one byte character
-		{
-			result += ((_unicode      )       );
-		}
-		else if(_unicode < 0x800) // two byte character
-		{
-			result += ((_unicode >>  6)       ) | 0xC0;
-			result += ((_unicode      ) & 0x3F) | 0x80;
-		}
-		else if(_unicode < 0xFFFF) // three byte character
-		{
-			result += ((_unicode >> 12)       ) | 0xE0;
-			result += ((_unicode >>  6) & 0x3F) | 0x80;
-			result += ((_unicode      ) & 0x3F) | 0x80;
-		}
-		else if(_unicode <= 0x1fffff) // four byte character
-		{
-			result += ((_unicode >> 18)       ) | 0xF0;
-			result += ((_unicode >> 12) & 0x3F) | 0x80;
-			result += ((_unicode >>  6) & 0x3F) | 0x80;
-			result += ((_unicode      ) & 0x3F) | 0x80;
-		}
-		else
-		{
-			// error, invalid unicode
-			result += '?';
-		}
-
-		return result;
-
-	} // unicode2Chars
-
-	inline size_t nextCursor(const std::string& _string, const size_t _cursor)
-	{
-		size_t result = _cursor;
-
-		while(result < _string.length())
-		{
-			++result;
-
-			if((_string[result] & 0xC0) != 0x80) // break if current character is not 10xxxxxx
-				break;
-		}
-
-		return result;
-
-	} // nextCursor
-
-	inline size_t prevCursor(const std::string& _string, const size_t _cursor)
-	{
-		size_t result = _cursor;
-
-		while(result > 0)
-		{
-			--result;
-
-			if((_string[result] & 0xC0) != 0x80) // break if current character is not 10xxxxxx
-				break;
-		}
-
-		return result;
-
-	} // prevCursor
-
-	inline size_t moveCursor(const std::string& _string, const size_t _cursor, const int _amount)
-	{
-		size_t result = _cursor;
-
-		if(_amount > 0)
-		{
-			for(int i = 0; i < _amount; ++i)
-				result = nextCursor(_string, result);
-		}
-		else if(_amount < 0)
-		{
-			for(int i = _amount; i < 0; ++i)
-				result = prevCursor(_string, result);
-		}
-
-		return result;
-
-	} // moveCursor
-}
-
-#endif // ES_CORE_STRING_UTIL_H

es-core/src/components/TextComponent.cpp

@@ -1,9 +1,9 @@
 #include "components/TextComponent.h"
 
+#include "utils/StringUtil.h"
 #include "Log.h"
 #include "Renderer.h"
 #include "Settings.h"
-#include "StringUtil.h"
 #include "Util.h"
 
 TextComponent::TextComponent(Window* window) : GuiComponent(window), 
@@ -198,7 +198,7 @@ void TextComponent::onTextChanged()
 
 		while(text.size() && size.x() + abbrevSize.x() > mSize.x())
 		{
-			size_t newSize = StringUtil::prevCursor(text, text.size());
+			size_t newSize = Utils::String::prevCursor(text, text.size());
 			text.erase(newSize, text.size() - newSize);
 			size = f->sizeText(text);
 		}

es-core/src/components/TextEditComponent.cpp

@@ -1,8 +1,8 @@
 #include "components/TextEditComponent.h"
 
 #include "resources/Font.h"
+#include "utils/StringUtil.h"
 #include "Renderer.h"
-#include "StringUtil.h"
 
 #define TEXT_PADDING_HORIZ 10
 #define TEXT_PADDING_VERT 2
@@ -60,7 +60,7 @@ void TextEditComponent::textInput(const char* text)
 		{
 			if(mCursor > 0)
 			{
-				size_t newCursor = StringUtil::prevCursor(mText, mCursor);
+				size_t newCursor = Utils::String::prevCursor(mText, mCursor);
 				mText.erase(mText.begin() + newCursor, mText.begin() + mCursor);
 				mCursor = newCursor;
 			}
@@ -191,7 +191,7 @@ void TextEditComponent::updateCursorRepeat(int deltaTime)
 
 void TextEditComponent::moveCursor(int amt)
 {
-	mCursor = StringUtil::moveCursor(mText, mCursor, amt);
+	mCursor = Utils::String::moveCursor(mText, mCursor, amt);
 	onCursorChanged();
 }
 

es-core/src/resources/Font.cpp

@@ -1,8 +1,8 @@
 #include "resources/Font.h"
 
+#include "utils/StringUtil.h"
 #include "Log.h"
 #include "Renderer.h"
-#include "StringUtil.h"
 #include "Util.h"
 
 FT_Library Font::sLibrary = NULL;
@@ -448,7 +448,7 @@ Vector2f Font::sizeText(std::string text, float lineSpacing)
 	size_t i = 0;
 	while(i < text.length())
 	{
-		unsigned int character = StringUtil::chars2Unicode(text, i); // advances i
+		unsigned int character = Utils::String::chars2Unicode(text, i); // advances i
 
 		if(character == '\n')
 		{
@@ -541,8 +541,8 @@ Vector2f Font::getWrappedTextCursorOffset(std::string text, float xLen, size_t s
 	size_t cursor = 0;
 	while(cursor < stop)
 	{
-		unsigned int wrappedCharacter = StringUtil::chars2Unicode(wrappedText, wrapCursor);
-		unsigned int character = StringUtil::chars2Unicode(text, cursor);
+		unsigned int wrappedCharacter = Utils::String::chars2Unicode(wrappedText, wrapCursor);
+		unsigned int character = Utils::String::chars2Unicode(text, cursor);
 
 		if(wrappedCharacter == '\n' && character != '\n')
 		{
@@ -551,7 +551,7 @@ Vector2f Font::getWrappedTextCursorOffset(std::string text, float xLen, size_t s
 			lineWidth = 0.0f;
 			y += getHeight(lineSpacing);
 
-			cursor = StringUtil::prevCursor(text, cursor); // unconsume
+			cursor = Utils::String::prevCursor(text, cursor); // unconsume
 			continue;
 		}
 
@@ -609,7 +609,7 @@ TextCache* Font::buildTextCache(const std::string& text, Vector2f offset, unsign
 	size_t cursor = 0;
 	while(cursor < text.length())
 	{
-		unsigned int character = StringUtil::chars2Unicode(text, cursor); // also advances cursor
+		unsigned int character = Utils::String::chars2Unicode(text, cursor); // also advances cursor
 		Glyph* glyph;
 
 		// invalid character

es-core/src/utils/FileSystemUtil.cpp

@@ -0,0 +1,168 @@
+#include "utils/FileSystemUtil.h"
+
+#include <sys/stat.h>
+#include <string.h>
+
+#if defined(WIN32)
+// because windows...
+#include <direct.h>
+#define snprintf _snprintf
+#define mkdir(x,y) _mkdir(x)
+#endif // WIN32
+
+namespace Utils
+{
+	namespace FileSystem
+	{
+		bool createDirectory(const std::string& path)
+		{
+			// don't create if it already exists
+			if(exists(path))
+				return true;
+
+			// convert '\\' to '/'
+			fixSeparators(path);
+
+			// try to create directory
+			if(mkdir(path.c_str(), 0755) == 0)
+				return true;
+
+			// failed to create directory, try to create the parent
+			std::string parent = getParent(path);
+
+			// only try to create parent if it's not identical to path
+			if(parent != path)
+				createDirectory(parent);
+
+			// try to create directory again now that the parent should exist
+			return (mkdir(path.c_str(), 0755) == 0);
+
+		} // createDirectory
+
+		void fixSeparators(const std::string& path)
+		{
+			char* p = nullptr;
+
+			// convert '\\' to '/'
+			for(p = (char*)path.c_str() + 1; *p; ++p)
+			{
+				if(*p == '\\')
+					*p = '/';
+			}
+
+		} // fixSeparators
+
+		std::string escapePath(const std::string& path)
+		{
+
+#ifdef WIN32
+			// windows escapes stuff by just putting everything in quotes
+			return '"' + path + '"';
+#else // WIN32
+			// insert a backslash before most characters that would mess up a bash path
+			std::string escapedPath = path;
+			const char* invalidChars = "\\ '\"!$^&*(){}[]?;<>";
+			const char* invalidChar = invalidChars;
+
+			while(*invalidChar)
+			{
+				for(size_t i = 0; i < escapedPath.length(); ++i)
+				{
+					if(escapedPath[i] == *invalidChar)
+					{
+						escapedPath.insert(i, 1, '\\');
+						++i;
+					}
+				}
+
+				++invalidChar;
+			}
+
+			return escapedPath;
+#endif // WIN32
+
+		} // escapePath
+
+		std::string getParent(const std::string& path)
+		{
+			// convert '\\' to '/'
+			fixSeparators(path);
+
+			// make a copy of the path
+			char temp[512];
+			size_t len = snprintf(temp, sizeof(temp), "%s", path.c_str());
+
+			// find last '/' and end the new path
+			while(len > 1)
+			{
+				if(temp[--len] == '/')
+				{
+					temp[len] = 0;
+					return temp;
+				}
+			}
+
+			// no parent found
+			return path;
+
+		} // getParent
+
+		std::string getFileName(const std::string& path)
+		{
+			// convert '\\' to '/'
+			fixSeparators(path);
+
+			// make a copy of the path
+			char temp[512];
+			size_t len = snprintf(temp, sizeof(temp), "%s", path.c_str());
+
+			// find last '/' and return the filename
+			while(len > 1)
+			{
+				// return "." if this is the end of the path, otherwise return filename
+				if(temp[--len] == '/')
+					return ((temp[len + 1] == 0) ? "." : (temp + len + 1));
+			}
+
+			// no '/' found, entire path is a filename
+			return path;
+
+		} // getFileName
+
+		std::string getStem(const std::string& path)
+		{
+			std::string fileName = getFileName(path);
+
+			// empty fileName
+			if(fileName == ".")
+				return fileName;
+
+			// make a copy of the filename
+			char temp[512];
+			size_t len = snprintf(temp, sizeof(temp), "%s", fileName.c_str());
+
+			// find last '.' and remove the extension
+			while(len > 1)
+			{
+				if(temp[--len] == '.')
+				{
+					temp[len] = 0;
+					return temp;
+				}
+			}
+
+			// no '.' found, filename has no extension
+			return fileName;
+
+		} // getStem
+
+		bool exists(const std::string& path)
+		{
+			struct stat info;
+			return (stat(path.c_str(), &info) == 0);
+
+		} // exists
+
+	} // FileSystem::
+
+} // Utils::

es-core/src/utils/FileSystemUtil.h

@@ -0,0 +1,23 @@
+#pragma once
+#ifndef ES_CORE_FILE_SYSTEM_UTIL_H
+#define ES_CORE_FILE_SYSTEM_UTIL_H
+
+#include <string>
+
+namespace Utils
+{
+	namespace FileSystem
+	{
+		bool createDirectory(const std::string& path);
+		void fixSeparators(const std::string& path);
+		std::string escapePath(const std::string& path);
+		std::string getParent(const std::string& path);
+		std::string getFileName(const std::string& path);
+		std::string getStem(const std::string& path);
+		bool exists(const std::string& path);
+
+	} // FileSystem::
+
+} // Utils::
+
+#endif // ES_CORE_FILE_SYSTEM_UTIL_H

es-core/src/utils/StringUtil.cpp

@@ -0,0 +1,156 @@
+#include "utils/StringUtil.h"
+
+namespace Utils
+{
+	namespace String
+	{
+		unsigned int chars2Unicode(const std::string& _string, size_t& _cursor)
+		{
+			const char&  c      = _string[_cursor];
+			unsigned int result = '?';
+
+			if((c & 0x80) == 0) // 0xxxxxxx, one byte character
+			{
+				// 0xxxxxxx
+				result = ((_string[_cursor++]       )      );
+			}
+			else if((c & 0xE0) == 0xC0) // 110xxxxx, two byte character
+			{
+				// 110xxxxx 10xxxxxx
+				result = ((_string[_cursor++] & 0x1F) <<  6) |
+						 ((_string[_cursor++] & 0x3F)      );
+			}
+			else if((c & 0xF0) == 0xE0) // 1110xxxx, three byte character
+			{
+				// 1110xxxx 10xxxxxx 10xxxxxx
+				result = ((_string[_cursor++] & 0x0F) << 12) |
+						 ((_string[_cursor++] & 0x3F) <<  6) |
+						 ((_string[_cursor++] & 0x3F)      );
+			}
+			else if((c & 0xF8) == 0xF0) // 11110xxx, four byte character
+			{
+				// 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+				result = ((_string[_cursor++] & 0x07) << 18) |
+						 ((_string[_cursor++] & 0x3F) << 12) |
+						 ((_string[_cursor++] & 0x3F) <<  6) |
+						 ((_string[_cursor++] & 0x3F)      );
+			}
+			else
+			{
+				// error, invalid unicode
+				++_cursor;
+			}
+
+			return result;
+
+		} // chars2Unicode
+
+		std::string unicode2Chars(const unsigned int _unicode)
+		{
+			std::string result;
+
+			if(_unicode < 0x80) // one byte character
+			{
+				result += ((_unicode      )       );
+			}
+			else if(_unicode < 0x800) // two byte character
+			{
+				result += ((_unicode >>  6)       ) | 0xC0;
+				result += ((_unicode      ) & 0x3F) | 0x80;
+			}
+			else if(_unicode < 0xFFFF) // three byte character
+			{
+				result += ((_unicode >> 12)       ) | 0xE0;
+				result += ((_unicode >>  6) & 0x3F) | 0x80;
+				result += ((_unicode      ) & 0x3F) | 0x80;
+			}
+			else if(_unicode <= 0x1fffff) // four byte character
+			{
+				result += ((_unicode >> 18)       ) | 0xF0;
+				result += ((_unicode >> 12) & 0x3F) | 0x80;
+				result += ((_unicode >>  6) & 0x3F) | 0x80;
+				result += ((_unicode      ) & 0x3F) | 0x80;
+			}
+			else
+			{
+				// error, invalid unicode
+				result += '?';
+			}
+
+			return result;
+
+		} // unicode2Chars
+
+		size_t nextCursor(const std::string& _string, const size_t _cursor)
+		{
+			size_t result = _cursor;
+
+			while(result < _string.length())
+			{
+				++result;
+
+				if((_string[result] & 0xC0) != 0x80) // break if current character is not 10xxxxxx
+					break;
+			}
+
+			return result;
+
+		} // nextCursor
+
+		size_t prevCursor(const std::string& _string, const size_t _cursor)
+		{
+			size_t result = _cursor;
+
+			while(result > 0)
+			{
+				--result;
+
+				if((_string[result] & 0xC0) != 0x80) // break if current character is not 10xxxxxx
+					break;
+			}
+
+			return result;
+
+		} // prevCursor
+
+		size_t moveCursor(const std::string& _string, const size_t _cursor, const int _amount)
+		{
+			size_t result = _cursor;
+
+			if(_amount > 0)
+			{
+				for(int i = 0; i < _amount; ++i)
+					result = nextCursor(_string, result);
+			}
+			else if(_amount < 0)
+			{
+				for(int i = _amount; i < 0; ++i)
+					result = prevCursor(_string, result);
+			}
+
+			return result;
+
+		} // moveCursor
+
+		void trim(std::string& _string)
+		{
+			if(_string.size())
+			{
+				size_t cursorB = 0;
+				size_t cursorE = _string.size();
+			
+				while((cursorB < _string.size()) && _string[cursorB] == ' ')
+					++cursorB;
+
+				while((cursorE > 0) && _string[cursorE - 1] == ' ')
+					--cursorE;
+
+				_string.erase(_string.begin() + cursorE, _string.end());
+				_string.erase(_string.begin(), _string.begin() + cursorB);
+			}
+
+		} // trim
+
+	} // String::
+
+} // Utils::

es-core/src/utils/StringUtil.h

@@ -0,0 +1,22 @@
+#pragma once
+#ifndef ES_CORE_STRING_UTIL_H
+#define ES_CORE_STRING_UTIL_H
+
+#include <string>
+
+namespace Utils
+{
+	namespace String
+	{
+		unsigned int chars2Unicode(const std::string& _string, size_t& _cursor);
+		std::string  unicode2Chars(const unsigned int _unicode);
+		size_t       nextCursor(const std::string& _string, const size_t _cursor);
+		size_t       prevCursor(const std::string& _string, const size_t _cursor);
+		size_t       moveCursor(const std::string& _string, const size_t _cursor, const int _amount);
+		void         trim(std::string& _string);
+
+	} // String::
+
+} // Utils::
+
+#endif // ES_CORE_STRING_UTIL_H