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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /* | ||
| * Copyright 2010-2017 Branimir Karadzic. All rights reserved. | ||
| * License: https://github.com/bkaradzic/bx#license-bsd-2-clause | ||
| */ | ||
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| #ifndef BX_FILEPATH_H_HEADER_GUARD | ||
| #define BX_FILEPATH_H_HEADER_GUARD | ||
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| #include "string.h" | ||
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| namespace bx | ||
| { | ||
| const int32_t kMaxFilePath = 1024; | ||
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| /// FilePath parser and helper. | ||
| /// | ||
| /// /abv/gd/555/333/pod.mac | ||
| /// ppppppppppppppppbbbeeee | ||
| /// ^ ^ ^ | ||
| /// +-path base-+ +-ext | ||
| /// ^^^^^^^ | ||
| /// +-filename | ||
| /// | ||
| class FilePath | ||
| { | ||
| public: | ||
| /// | ||
| FilePath(); | ||
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| /// | ||
| FilePath(const StringView& _str); | ||
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| /// | ||
| void set(const StringView& _str); | ||
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| /// | ||
| const StringView get() const; | ||
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| /// If path is `/abv/gd/555/333/pod.mac` returns `/abv/gd/555/333/`. | ||
| /// | ||
| const StringView getPath() const; | ||
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| /// If path is `/abv/gd/555/333/pod.mac` returns `pod.mac`. | ||
| /// | ||
| const StringView getFileName() const; | ||
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| /// If path is `/abv/gd/555/333/pod.mac` returns `pod`. | ||
| /// | ||
| const StringView getBaseName() const; | ||
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| /// If path is `/abv/gd/555/333/pod.mac` returns `.mac`. | ||
| /// | ||
| const StringView getExt() const; | ||
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| /// | ||
| bool isAbsolute() const; | ||
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| private: | ||
| char m_filePath[kMaxFilePath]; | ||
| }; | ||
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| } // namespace bx | ||
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| #endif // BX_FILEPATH_H_HEADER_GUARD |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,212 @@ | ||
| /* | ||
| * Copyright 2010-2017 Branimir Karadzic. All rights reserved. | ||
| * License: https://github.com/bkaradzic/bx#license-bsd-2-clause | ||
| */ | ||
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| #include <bx/filepath.h> | ||
| #include <bx/readerwriter.h> | ||
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| namespace bx | ||
| { | ||
| static bool isPathSeparator(char _ch) | ||
| { | ||
| return false | ||
| || '/' == _ch | ||
| || '\\' == _ch | ||
| ; | ||
| } | ||
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| static int32_t normalizeFilePath(char* _dst, int32_t _dstSize, const char* _src, int32_t _num) | ||
| { | ||
| // Reference: Lexical File Names in Plan 9 or Getting Dot-Dot Right | ||
| // https://9p.io/sys/doc/lexnames.html | ||
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| const int32_t num = strLen(_src, _num); | ||
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| if (0 == num) | ||
| { | ||
| return strCopy(_dst, _dstSize, "."); | ||
| } | ||
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| int32_t size = 0; | ||
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| StaticMemoryBlockWriter writer(_dst, _dstSize); | ||
| Error err; | ||
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| int32_t idx = 0; | ||
| int32_t dotdot = 0; | ||
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| if (2 <= num | ||
| && ':' == _src[1]) | ||
| { | ||
| size += write(&writer, toUpper(_src[idx]), &err); | ||
| size += write(&writer, ':', &err); | ||
| idx += 2; | ||
| dotdot = size; | ||
| } | ||
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| const int32_t slashIdx = idx; | ||
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| bool rooted = isPathSeparator(_src[idx]); | ||
| if (rooted) | ||
| { | ||
| size += write(&writer, '/', &err); | ||
| ++idx; | ||
| dotdot = size; | ||
| } | ||
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| while (idx < num && err.isOk() ) | ||
| { | ||
| switch (_src[idx]) | ||
| { | ||
| case '/': | ||
| case '\\': | ||
| ++idx; | ||
| break; | ||
|
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| case '.': | ||
| if (idx+1 == num | ||
| || isPathSeparator(_src[idx+1]) ) | ||
| { | ||
| ++idx; | ||
| break; | ||
| } | ||
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| if ('.' == _src[idx+1] | ||
| && (idx+2 == num || isPathSeparator(_src[idx+2]) ) ) | ||
| { | ||
| idx += 2; | ||
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| if (dotdot < size) | ||
| { | ||
| for (--size | ||
| ; dotdot < size && !isPathSeparator(_dst[size]) | ||
| ; --size) | ||
| { | ||
| } | ||
| seek(&writer, size, Whence::Begin); | ||
| } | ||
| else if (!rooted) | ||
| { | ||
| if (0 < size) | ||
| { | ||
| size += write(&writer, '/', &err); | ||
| } | ||
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| size += write(&writer, "..", &err); | ||
| dotdot = size; | ||
| } | ||
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| break; | ||
| } | ||
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| BX_FALLTHROUGH; | ||
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| default: | ||
| if ( ( rooted && slashIdx+1 != size) | ||
| || (!rooted && 0 != size) ) | ||
| { | ||
| size += write(&writer, '/', &err); | ||
| } | ||
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| for (; idx < num && !isPathSeparator(_src[idx]); ++idx) | ||
| { | ||
| size += write(&writer, _src[idx], &err); | ||
| } | ||
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| break; | ||
| } | ||
| } | ||
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| if (0 == size) | ||
| { | ||
| size += write(&writer, '.', &err); | ||
| } | ||
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| write(&writer, '\0', &err); | ||
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| return size; | ||
| } | ||
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| FilePath::FilePath() | ||
| { | ||
| set(""); | ||
| } | ||
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| FilePath::FilePath(const StringView& _filePath) | ||
| { | ||
| set(_filePath); | ||
| } | ||
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| void FilePath::set(const StringView& _filePath) | ||
| { | ||
| normalizeFilePath( | ||
| m_filePath | ||
| , BX_COUNTOF(m_filePath) | ||
| , _filePath.getPtr() | ||
| , _filePath.getLength() | ||
| ); | ||
| } | ||
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| const StringView FilePath::get() const | ||
| { | ||
| return StringView(m_filePath); | ||
| } | ||
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| const StringView FilePath::getPath() const | ||
| { | ||
| const char* end = strRFind(m_filePath, '/'); | ||
| if (NULL != end) | ||
| { | ||
| return StringView(m_filePath, end+1); | ||
| } | ||
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| return StringView(); | ||
| } | ||
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| const StringView FilePath::getFileName() const | ||
| { | ||
| const char* fileName = strRFind(m_filePath, '/'); | ||
| if (NULL != fileName) | ||
| { | ||
| return StringView(fileName+1); | ||
| } | ||
|
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| return get(); | ||
| } | ||
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| const StringView FilePath::getBaseName() const | ||
| { | ||
| const StringView fileName = getFileName(); | ||
| if (!fileName.isEmpty() ) | ||
| { | ||
| const char* ext = strFind(fileName.getPtr(), '.', fileName.getLength() ); | ||
| if (ext != NULL) | ||
| { | ||
| return StringView(fileName.getPtr(), ext); | ||
| } | ||
| } | ||
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| return StringView(); | ||
| } | ||
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| const StringView FilePath::getExt() const | ||
| { | ||
| const StringView fileName = getFileName(); | ||
| if (!fileName.isEmpty() ) | ||
| { | ||
| const char* ext = strFind(fileName.getPtr(), '.', fileName.getLength() ); | ||
| return StringView(ext); | ||
| } | ||
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| return StringView(); | ||
| } | ||
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| bool FilePath::isAbsolute() const | ||
| { | ||
| return '/' == m_filePath[0] // no drive letter | ||
| || (':' == m_filePath[1] && '/' == m_filePath[2]) // with drive letter | ||
| ; | ||
| } | ||
|
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| } // namespace bx |
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