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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| #include "stdafx.h" | ||
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| #include "ParsingUtils.hpp" | ||
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| ParseIncludeResult ParseInclude(pstr string, pcstr& out_include_name) | ||
| { | ||
| VERIFY(string); | ||
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| // Skip any whitespace characters | ||
| string = ParseAllSpaces(string); | ||
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| // Check for #include | ||
| static constexpr pcstr IncludeTag = "#include"; | ||
| if (std::strncmp(string, IncludeTag, 8) != 0) | ||
| return ParseIncludeResult::NoInclude; | ||
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| string += 8; | ||
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| // Skip any whitespace characters | ||
| string = ParseAllSpaces(string); | ||
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| // Check that after the tag there is a quote | ||
| if (*string != '\"') | ||
| return ParseIncludeResult::Error; | ||
|
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| // Mark the start of the include name | ||
| ++string; | ||
| out_include_name = string; | ||
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| string = ParseUntil(string, '\"'); | ||
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| // Check for unterminated or empty include name | ||
| if (*string == '\0' || out_include_name == string) | ||
| return ParseIncludeResult::Error; | ||
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| // Check for unreasonably long include names | ||
| const size_t size = string - out_include_name; | ||
| if (size > 1024) | ||
| return ParseIncludeResult::Error; | ||
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| // NOTE(Andre): Yes this might look scary but it's perfectly fine. Since the include name is already in the string | ||
| // we are parsing and its not used afterwards we simply replace the closing quote with a null byte and we have a | ||
| // valid c-string pointed to by 'out_include_name' and safe ourselves the need to copy the string. | ||
| *string = '\0'; | ||
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| return ParseIncludeResult::Success; | ||
| } | ||
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| pcstr ParseAllSpaces(pcstr string) | ||
| { | ||
| VERIFY(string); | ||
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| while (*string != '\0' && std::isspace(*string)) | ||
| ++string; | ||
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| return string; | ||
| } | ||
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| pstr ParseAllSpaces(pstr string) { return const_cast<pstr>(ParseAllSpaces(reinterpret_cast<pcstr>(string))); } | ||
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| pcstr ParseUntil(pcstr string, const char character) | ||
| { | ||
| VERIFY(string); | ||
|
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| while (*string != '\0' && *string != character) | ||
| ++string; | ||
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| return string; | ||
| } | ||
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| pstr ParseUntil(pstr string, const char character) | ||
| { | ||
| return const_cast<pstr>(ParseUntil(reinterpret_cast<pcstr>(string), character)); | ||
| } | ||
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| void StringCopyLowercase(pstr destination, pcstr src, std::size_t size) | ||
| { | ||
| VERIFY(destination); | ||
| VERIFY(src); | ||
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| for (std::size_t i = 0; *src != '\0' && i < size; ++i) | ||
| { | ||
| *destination = std::tolower(*src); | ||
| ++src; | ||
| ++destination; | ||
| } | ||
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| // Ensure the string is null-terminated | ||
| *destination = '\0'; | ||
| } | ||
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| void StringCopyLowercase(pstr destination, shared_str src, std::size_t size) | ||
| { | ||
| StringCopyLowercase(destination, *src, size); | ||
| } |
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