12 files changed, 1089 insertions, 0 deletions
diff --git a/tools/scaninc/.gitignore b/tools/scaninc/.gitignore
new file mode 100644
index 0000000..94bfbf9
--- /dev/null
+++ b/tools/scaninc/.gitignore
@@ -0,0 +1 @@
+scaninc
diff --git a/tools/scaninc/LICENSE b/tools/scaninc/LICENSE
new file mode 100644
index 0000000..b66bf81
--- /dev/null
+++ b/tools/scaninc/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2015 YamaArashi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/tools/scaninc/Makefile b/tools/scaninc/Makefile
new file mode 100644
index 0000000..1516f15
--- /dev/null
+++ b/tools/scaninc/Makefile
@@ -0,0 +1,18 @@
+CXX = g++
+
+CXXFLAGS = -Wall -Werror -std=c++11 -O2
+
+SRCS = scaninc.cpp c_file.cpp asm_file.cpp source_file.cpp
+
+HEADERS := scaninc.h asm_file.h c_file.h source_file.h
+
+.PHONY: all clean
+
+all: scaninc
+	@:
+
+scaninc: $(SRCS) $(HEADERS)
+	$(CXX) $(CXXFLAGS) $(SRCS) -o $@ $(LDFLAGS)
+
+clean:
+	$(RM) scaninc scaninc.exe
diff --git a/tools/scaninc/asm_file.cpp b/tools/scaninc/asm_file.cpp
new file mode 100644
index 0000000..109e604
--- /dev/null
+++ b/tools/scaninc/asm_file.cpp
@@ -0,0 +1,192 @@
+// Copyright(c) 2015-2017 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include <cstdio>
+#include <string>
+#include "scaninc.h"
+#include "asm_file.h"
+
+AsmFile::AsmFile(std::string path)
+{
+    m_path = path;
+
+    FILE *fp = std::fopen(path.c_str(), "rb");
+
+    if (fp == NULL)
+        FATAL_ERROR("Failed to open \"%s\" for reading.\n", path.c_str());
+
+    std::fseek(fp, 0, SEEK_END);
+
+    m_size = std::ftell(fp);
+
+    m_buffer = new char[m_size];
+
+    std::rewind(fp);
+
+    if (std::fread(m_buffer, m_size, 1, fp) != 1)
+        FATAL_ERROR("Failed to read \"%s\".\n", path.c_str());
+
+    std::fclose(fp);
+
+    m_pos = 0;
+    m_lineNum = 1;
+}
+
+AsmFile::~AsmFile()
+{
+    delete[] m_buffer;
+}
+
+IncDirectiveType AsmFile::ReadUntilIncDirective(std::string &path)
+{
+    // At the beginning of each loop iteration, the current file position
+    // should be at the start of a line or at the end of the file.
+    for (;;)
+    {
+        SkipTabsAndSpaces();
+
+        IncDirectiveType incDirectiveType = IncDirectiveType::None;
+
+        char c = PeekChar();
+        if (c == '.' || c == '#')
+        {
+            m_pos++;
+
+            if (MatchIncDirective("incbin", path))
+                incDirectiveType = IncDirectiveType::Incbin;
+            else if (MatchIncDirective("include", path))
+                incDirectiveType = IncDirectiveType::Include;
+        }
+
+        for (;;)
+        {
+            int c = GetChar();
+
+            if (c == -1)
+                return incDirectiveType;
+
+            if (c == ';')
+            {
+                SkipEndOfLineComment();
+                break;
+            }
+            else if (c == '/' && PeekChar() == '*')
+            {
+                m_pos++;
+                SkipMultiLineComment();
+            }
+            else if (c == '"')
+            {
+                SkipString();
+            }
+            else if (c == '\n')
+            {
+                break;
+            }
+        }
+
+        if (incDirectiveType != IncDirectiveType::None)
+            return incDirectiveType;
+    }
+}
+
+std::string AsmFile::ReadPath()
+{
+    int length = 0;
+    int startPos = m_pos;
+
+    for (;;)
+    {
+        int c = GetChar();
+
+        if (c == '"')
+            break;
+
+        if (c == -1)
+            FATAL_INPUT_ERROR("unexpected EOF in include string\n");
+
+        if (c == 0)
+            FATAL_INPUT_ERROR("unexpected NUL character in include string\n");
+
+        if (c == '\n')
+            FATAL_INPUT_ERROR("unexpected end of line character in include string\n");
+
+        // Don't bother allowing any escape sequences.
+        if (c == '\\')
+            FATAL_INPUT_ERROR("unexpected escape in include string\n");
+
+        length++;
+
+        if (length > SCANINC_MAX_PATH)
+            FATAL_INPUT_ERROR("path is too long");
+    }
+
+    return std::string(m_buffer + startPos, length);
+}
+
+void AsmFile::SkipEndOfLineComment()
+{
+    int c;
+
+    do
+    {
+        c = GetChar();
+    } while (c != -1 && c != '\n');
+}
+
+void AsmFile::SkipMultiLineComment()
+{
+    for (;;)
+    {
+        int c = GetChar();
+
+        if (c == '*')
+        {
+            if (PeekChar() == '/')
+            {
+                m_pos++;
+                return;
+            }
+        }
+        else if (c == -1)
+        {
+            return;
+        }
+    }
+}
+
+void AsmFile::SkipString()
+{
+    for (;;)
+    {
+        int c = GetChar();
+
+        if (c == '"')
+            break;
+
+        if (c == -1)
+            FATAL_INPUT_ERROR("unexpected EOF in string\n");
+
+        if (c == '\\')
+        {
+            c = GetChar();
+        }
+    }
+}
diff --git a/tools/scaninc/asm_file.h b/tools/scaninc/asm_file.h
new file mode 100644
index 0000000..ad99b75
--- /dev/null
+++ b/tools/scaninc/asm_file.h
@@ -0,0 +1,119 @@
+// Copyright(c) 2015-2017 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#ifndef ASM_FILE_H
+#define ASM_FILE_H
+
+#include <string>
+#include "scaninc.h"
+
+enum class IncDirectiveType
+{
+    None,
+    Include,
+    Incbin
+};
+
+class AsmFile
+{
+public:
+    AsmFile(std::string path);
+    ~AsmFile();
+    IncDirectiveType ReadUntilIncDirective(std::string& path);
+
+private:
+    char *m_buffer;
+    int m_pos;
+    int m_size;
+    int m_lineNum;
+    std::string m_path;
+
+    int GetChar()
+    {
+        if (m_pos >= m_size)
+            return -1;
+
+        int c = m_buffer[m_pos++];
+
+        if (c == '\r')
+        {
+            if (m_pos < m_size && m_buffer[m_pos++] == '\n')
+            {
+                m_lineNum++;
+                return '\n';
+            }
+            else
+            {
+                FATAL_INPUT_ERROR("CR line endings are not supported\n");
+            }
+        }
+
+        if (c == '\n')
+            m_lineNum++;
+
+        return c;
+    }
+
+    // No newline translation because it's not needed for any use of this function.
+    int PeekChar()
+    {
+        if (m_pos >= m_size)
+            return -1;
+
+        return m_buffer[m_pos];
+    }
+
+    void SkipTabsAndSpaces()
+    {
+        while (m_pos < m_size && (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' '))
+            m_pos++;
+    }
+
+    bool MatchIncDirective(std::string directiveName, std::string& path)
+    {
+        int length = directiveName.length();
+        int i;
+
+        for (i = 0; i < length && m_pos + i < m_size; i++)
+            if (directiveName[i] != m_buffer[m_pos + i])
+                return false;
+
+        if (i < length)
+            return false;
+
+        m_pos += length;
+
+        SkipTabsAndSpaces();
+
+        if (GetChar() != '"')
+            FATAL_INPUT_ERROR("no path after \".%s\" directive\n", directiveName.c_str());
+
+        path = ReadPath();
+
+        return true;
+    }
+
+    std::string ReadPath();
+    void SkipEndOfLineComment();
+    void SkipMultiLineComment();
+    void SkipString();
+};
+
+#endif // ASM_FILE_H
diff --git a/tools/scaninc/c_file.cpp b/tools/scaninc/c_file.cpp
new file mode 100644
index 0000000..595f366
--- /dev/null
+++ b/tools/scaninc/c_file.cpp
@@ -0,0 +1,307 @@
+// Copyright(c) 2017 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include "c_file.h"
+
+CFile::CFile(std::string path)
+{
+    m_path = path;
+
+    FILE *fp = std::fopen(path.c_str(), "rb");
+
+    if (fp == NULL)
+        FATAL_ERROR("Failed to open \"%s\" for reading.\n", path.c_str());
+
+    std::fseek(fp, 0, SEEK_END);
+
+    m_size = std::ftell(fp);
+
+    m_buffer = new char[m_size + 1];
+    m_buffer[m_size] = 0;
+
+    std::rewind(fp);
+
+    if (std::fread(m_buffer, m_size, 1, fp) != 1)
+        FATAL_ERROR("Failed to read \"%s\".\n", path.c_str());
+
+    std::fclose(fp);
+
+    m_pos = 0;
+    m_lineNum = 1;
+}
+
+CFile::~CFile()
+{
+    delete[] m_buffer;
+}
+
+void CFile::FindIncbins()
+{
+    char stringChar = 0;
+
+    while (m_pos < m_size)
+    {
+        if (stringChar)
+        {
+            if (m_buffer[m_pos] == stringChar)
+            {
+                m_pos++;
+                stringChar = 0;
+            }
+            else if (m_buffer[m_pos] == '\\' && m_buffer[m_pos + 1] == stringChar)
+            {
+                m_pos += 2;
+            }
+            else
+            {
+                if (m_buffer[m_pos] == '\n')
+                    m_lineNum++;
+                m_pos++;
+            }
+        }
+        else
+        {
+            SkipWhitespace();
+            CheckInclude();
+            CheckIncbin();
+
+            if (m_pos >= m_size)
+                break;
+
+            char c = m_buffer[m_pos++];
+
+            if (c == '\n')
+                m_lineNum++;
+            else if (c == '"')
+                stringChar = '"';
+            else if (c == '\'')
+                stringChar = '\'';
+            else if (c == 0)
+                FATAL_INPUT_ERROR("unexpected null character");
+        }
+    }
+}
+
+bool CFile::ConsumeHorizontalWhitespace()
+{
+    if (m_buffer[m_pos] == '\t' || m_buffer[m_pos] == ' ')
+    {
+        m_pos++;
+        return true;
+    }
+
+    return false;
+}
+
+bool CFile::ConsumeNewline()
+{
+    if (m_buffer[m_pos] == '\n')
+    {
+        m_pos++;
+        m_lineNum++;
+        return true;
+    }
+
+    if (m_buffer[m_pos] == '\r' && m_buffer[m_pos + 1] == '\n')
+    {
+        m_pos += 2;
+        m_lineNum++;
+        return true;
+    }
+
+    return false;
+}
+
+bool CFile::ConsumeComment()
+{
+    if (m_buffer[m_pos] == '/' && m_buffer[m_pos + 1] == '*')
+    {
+        m_pos += 2;
+        while (m_buffer[m_pos] != '*' || m_buffer[m_pos + 1] != '/')
+        {
+            if (m_buffer[m_pos] == 0)
+                return false;
+            if (!ConsumeNewline())
+                m_pos++;
+        }
+        m_pos += 2;
+        return true;
+    }
+    else if (m_buffer[m_pos] == '/' && m_buffer[m_pos + 1] == '/')
+    {
+        m_pos += 2;
+        while (!ConsumeNewline())
+        {
+            if (m_buffer[m_pos] == 0)
+                return false;
+            m_pos++;
+        }
+        return true;
+    }
+
+    return false;
+}
+
+void CFile::SkipWhitespace()
+{
+    while (ConsumeHorizontalWhitespace() || ConsumeNewline() || ConsumeComment())
+        ;
+}
+
+bool CFile::CheckIdentifier(const std::string& ident)
+{
+    unsigned int i;
+
+    for (i = 0; i < ident.length() && m_pos + i < (unsigned)m_size; i++)
+        if (ident[i] != m_buffer[m_pos + i])
+            return false;
+
+    return (i == ident.length());
+}
+
+void CFile::CheckInclude()
+{
+    if (m_buffer[m_pos] != '#')
+        return;
+
+    std::string ident = "#include";
+
+    if (!CheckIdentifier(ident))
+    {
+        return;
+    }
+
+    m_pos += ident.length();
+
+    ConsumeHorizontalWhitespace();
+
+    std::string path = ReadPath();
+
+    if (!path.empty()) {
+        m_includes.emplace(path);
+    }
+}
+
+void CFile::CheckIncbin()
+{
+    // Optimization: assume most lines are not incbins
+    if (!(m_buffer[m_pos+0] == 'I'
+       && m_buffer[m_pos+1] == 'N'
+       && m_buffer[m_pos+2] == 'C'
+       && m_buffer[m_pos+3] == 'B'
+       && m_buffer[m_pos+4] == 'I'
+       && m_buffer[m_pos+5] == 'N'
+       && m_buffer[m_pos+6] == '_'))
+    {
+            return;
+    }
+
+    std::string idents[6] = { "INCBIN_S8", "INCBIN_U8", "INCBIN_S16", "INCBIN_U16", "INCBIN_S32", "INCBIN_U32" };
+    int incbinType = -1;
+
+    for (int i = 0; i < 6; i++)
+    {
+        if (CheckIdentifier(idents[i]))
+        {
+            incbinType = i;
+            break;
+        }
+    }
+
+    if (incbinType == -1)
+        return;
+
+    long oldPos = m_pos;
+    long oldLineNum = m_lineNum;
+
+    m_pos += idents[incbinType].length();
+
+    SkipWhitespace();
+
+    if (m_buffer[m_pos] != '(')
+    {
+        m_pos = oldPos;
+        m_lineNum = oldLineNum;
+        return;
+    }
+
+    m_pos++;
+
+    while (true)
+    {
+        SkipWhitespace();
+
+        std::string path = ReadPath();
+
+        SkipWhitespace();
+
+        m_incbins.emplace(path);
+
+        if (m_buffer[m_pos] != ',')
+            break;
+
+        m_pos++;
+    }
+
+    if (m_buffer[m_pos] != ')')
+        FATAL_INPUT_ERROR("expected ')'");
+
+    m_pos++;
+
+}
+
+std::string CFile::ReadPath()
+{
+    if (m_buffer[m_pos] != '"')
+    {
+        if (m_buffer[m_pos] == '<')
+        {
+            return std::string();
+        }
+        FATAL_INPUT_ERROR("expected '\"' or '<'");
+    }
+
+    m_pos++;
+
+    int startPos = m_pos;
+
+    while (m_buffer[m_pos] != '"')
+    {
+        if (m_buffer[m_pos] == 0)
+        {
+            if (m_pos >= m_size)
+                FATAL_INPUT_ERROR("unexpected EOF in path string");
+            else
+                FATAL_INPUT_ERROR("unexpected null character in path string");
+        }
+
+        if (m_buffer[m_pos] == '\r' || m_buffer[m_pos] == '\n')
+            FATAL_INPUT_ERROR("unexpected end of line character in path string");
+
+        if (m_buffer[m_pos] == '\\')
+            FATAL_INPUT_ERROR("unexpected escape in path string");
+
+        m_pos++;
+    }
+
+    m_pos++;
+
+    return std::string(m_buffer + startPos, m_pos - 1 - startPos);
+}
diff --git a/tools/scaninc/c_file.h b/tools/scaninc/c_file.h
new file mode 100644
index 0000000..618901b
--- /dev/null
+++ b/tools/scaninc/c_file.h
@@ -0,0 +1,57 @@
+// Copyright(c) 2017 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#ifndef C_FILE_H
+#define C_FILE_H
+
+#include <string>
+#include <set>
+#include <memory>
+#include "scaninc.h"
+
+class CFile
+{
+public:
+    CFile(std::string path);
+    ~CFile();
+    void FindIncbins();
+    const std::set<std::string>& GetIncbins() { return m_incbins; }
+    const std::set<std::string>& GetIncludes() { return m_includes; }
+
+private:
+    char *m_buffer;
+    int m_pos;
+    int m_size;
+    int m_lineNum;
+    std::string m_path;
+    std::set<std::string> m_incbins;
+    std::set<std::string> m_includes;
+
+    bool ConsumeHorizontalWhitespace();
+    bool ConsumeNewline();
+    bool ConsumeComment();
+    void SkipWhitespace();
+    bool CheckIdentifier(const std::string& ident);
+    void CheckInclude();
+    void CheckIncbin();
+    std::string ReadPath();
+};
+
+#endif // C_FILE_H
diff --git a/tools/scaninc/scaninc.cpp b/tools/scaninc/scaninc.cpp
new file mode 100644
index 0000000..b95cbd0
--- /dev/null
+++ b/tools/scaninc/scaninc.cpp
@@ -0,0 +1,121 @@
+// Copyright(c) 2015-2017 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include <cstdio>
+#include <cstdlib>
+#include <list>
+#include <queue>
+#include <set>
+#include <string>
+#include "scaninc.h"
+#include "source_file.h"
+
+bool CanOpenFile(std::string path)
+{
+    FILE *fp = std::fopen(path.c_str(), "rb");
+
+    if (fp == NULL)
+        return false;
+
+    std::fclose(fp);
+    return true;
+}
+
+const char *const USAGE = "Usage: scaninc [-I INCLUDE_PATH] FILE_PATH\n";
+
+int main(int argc, char **argv)
+{
+    std::queue<std::string> filesToProcess;
+    std::set<std::string> dependencies;
+
+    std::vector<std::string> includeDirs;
+
+    argc--;
+    argv++;
+
+    while (argc > 1)
+    {
+        std::string arg(argv[0]);
+        if (arg.substr(0, 2) == "-I")
+        {
+            std::string includeDir = arg.substr(2);
+            if (includeDir.empty())
+            {
+                argc--;
+                argv++;
+                includeDir = std::string(argv[0]);
+            }
+            if (!includeDir.empty() && includeDir.back() != '/')
+            {
+                includeDir += '/';
+            }
+            includeDirs.push_back(includeDir);
+        }
+        else
+        {
+            FATAL_ERROR(USAGE);
+        }
+        argc--;
+        argv++;
+    }
+
+    if (argc != 1) {
+        FATAL_ERROR(USAGE);
+    }
+
+    std::string initialPath(argv[0]);
+
+    filesToProcess.push(initialPath);
+
+    while (!filesToProcess.empty())
+    {
+        std::string filePath = filesToProcess.front();
+        SourceFile file(filePath);
+        filesToProcess.pop();
+
+        includeDirs.push_back(file.GetSrcDir());
+        for (auto incbin : file.GetIncbins())
+        {
+            dependencies.insert(incbin);
+        }
+        for (auto include : file.GetIncludes())
+        {
+            for (auto includeDir : includeDirs)
+            {
+                std::string path(includeDir + include);
+                if (CanOpenFile(path))
+                {
+                    bool inserted = dependencies.insert(path).second;
+                    if (inserted)
+                    {
+                        filesToProcess.push(path);
+                    }
+                    break;
+                }
+            }
+        }
+        includeDirs.pop_back();
+    }
+
+    for (const std::string &path : dependencies)
+    {
+        std::printf("%s\n", path.c_str());
+    }
+}
diff --git a/tools/scaninc/scaninc.exe b/tools/scaninc/scaninc.exe
index 04fd0f7..a055a35 100755
--- a/tools/scaninc/scaninc.exe
+++ b/tools/scaninc/scaninc.exe
diff --git a/tools/scaninc/scaninc.h b/tools/scaninc/scaninc.h
new file mode 100644
index 0000000..30cc961
--- /dev/null
+++ b/tools/scaninc/scaninc.h
@@ -0,0 +1,59 @@
+// Copyright(c) 2015-2017 YamaArashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#ifndef SCANINC_H
+#define SCANINC_H
+
+#include <cstdio>
+#include <cstdlib>
+
+#ifdef _MSC_VER
+
+#define FATAL_INPUT_ERROR(format, ...)                                        \
+do {                                                                          \
+    fprintf(stderr, "%s:%d " format, m_path.c_str(), m_lineNum, __VA_ARGS__); \
+    exit(1);                                                                  \
+} while (0)
+
+#define FATAL_ERROR(format, ...)          \
+do {                                      \
+    fprintf(stderr, format, __VA_ARGS__); \
+    exit(1);                              \
+} while (0)
+
+#else
+
+#define FATAL_INPUT_ERROR(format, ...)                                          \
+do {                                                                            \
+    fprintf(stderr, "%s:%d " format, m_path.c_str(), m_lineNum, ##__VA_ARGS__); \
+    exit(1);                                                                    \
+} while (0)
+
+#define FATAL_ERROR(format, ...)            \
+do {                                        \
+    fprintf(stderr, format, ##__VA_ARGS__); \
+    exit(1);                                \
+} while (0)
+
+#endif // _MSC_VER
+
+#define SCANINC_MAX_PATH 255
+
+#endif // SCANINC_H
diff --git a/tools/scaninc/source_file.cpp b/tools/scaninc/source_file.cpp
new file mode 100644
index 0000000..f23ff6d
--- /dev/null
+++ b/tools/scaninc/source_file.cpp
@@ -0,0 +1,125 @@
+// Copyright(c) 2019 Phlosioneer
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include <new>
+#include "source_file.h"
+
+
+SourceFileType GetFileType(std::string& path)
+{
+    std::size_t pos = path.find_last_of('.');
+
+    if (pos == std::string::npos)
+        FATAL_ERROR("no file extension in path \"%s\"\n", path.c_str());
+
+    std::string extension = path.substr(pos + 1);
+
+    if (extension == "c")
+        return SourceFileType::Cpp;
+    else if (extension == "s")
+        return SourceFileType::Asm;
+    else if (extension == "h")
+        return SourceFileType::Header;
+    else if (extension == "inc")
+        return SourceFileType::Inc;
+    else
+        FATAL_ERROR("Unrecognized extension \"%s\"\n", extension.c_str());
+    
+    // Unreachable
+    return SourceFileType::Cpp;
+}
+
+std::string GetDir(std::string& path)
+{
+    std::size_t slash = path.rfind('/');
+
+    if (slash != std::string::npos)
+        return path.substr(0, slash + 1);
+    else
+        return std::string("");
+}
+
+SourceFile::SourceFile(std::string path)
+{
+    m_file_type = GetFileType(path);
+
+    m_src_dir = GetDir(path);
+
+    if (m_file_type == SourceFileType::Cpp
+            || m_file_type == SourceFileType::Header)
+    {
+        new (&m_source_file.c_file) CFile(path);
+        m_source_file.c_file.FindIncbins();
+    }
+    else
+    {
+        AsmFile file(path);
+        std::set<std::string> incbins;
+        std::set<std::string> includes;
+
+        IncDirectiveType incDirectiveType;
+        std::string outputPath;
+
+        while ((incDirectiveType = file.ReadUntilIncDirective(outputPath)) != IncDirectiveType::None)
+        {
+            if (incDirectiveType == IncDirectiveType::Include)
+                includes.insert(outputPath);
+            else
+                incbins.insert(outputPath);
+        }
+        
+        new (&m_source_file.asm_wrapper) SourceFile::InnerUnion::AsmWrapper{incbins, includes};
+    }
+}
+
+SourceFile::~SourceFile()
+{
+    if (m_file_type == SourceFileType::Cpp || m_file_type == SourceFileType::Header)
+    {
+        m_source_file.c_file.~CFile();
+    }
+    else
+    {
+        m_source_file.asm_wrapper.asm_incbins.~set();
+        m_source_file.asm_wrapper.asm_includes.~set();
+    }
+}
+
+const std::set<std::string>& SourceFile::GetIncbins()
+{
+    if (m_file_type == SourceFileType::Cpp || m_file_type == SourceFileType::Header)
+        return m_source_file.c_file.GetIncbins();
+    else
+        return m_source_file.asm_wrapper.asm_incbins;
+}
+
+const std::set<std::string>& SourceFile::GetIncludes()
+{
+    if (m_file_type == SourceFileType::Cpp || m_file_type == SourceFileType::Header)
+        return m_source_file.c_file.GetIncludes();
+    else
+        return m_source_file.asm_wrapper.asm_includes;
+}
+
+std::string& SourceFile::GetSrcDir()
+{
+    return m_src_dir;
+}
+
diff --git a/tools/scaninc/source_file.h b/tools/scaninc/source_file.h
new file mode 100644
index 0000000..f7b6412
--- /dev/null
+++ b/tools/scaninc/source_file.h
@@ -0,0 +1,71 @@
+// Copyright(c) 2019 Phlosioneer
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#ifndef SOURCE_FILE_H
+#define SOURCE_FILE_H
+
+#include <string>
+#include "scaninc.h"
+#include "asm_file.h"
+#include "c_file.h"
+
+enum class SourceFileType
+{
+    Cpp,
+    Header,
+    Asm,
+    Inc
+};
+
+SourceFileType GetFileType(std::string& path);
+
+class SourceFile
+{
+public:
+
+    SourceFile(std::string path);
+    ~SourceFile();
+    SourceFile(SourceFile const&) = delete;
+    SourceFile(SourceFile&&) = delete;
+    SourceFile& operator =(SourceFile const&) = delete;
+    SourceFile& operator =(SourceFile&&) = delete;
+    bool HasIncbins();
+    const std::set<std::string>& GetIncbins();
+    const std::set<std::string>& GetIncludes();
+    std::string& GetSrcDir();
+
+private:
+    union InnerUnion {
+        CFile c_file;
+        struct AsmWrapper {
+            std::set<std::string> asm_incbins;
+            std::set<std::string> asm_includes;
+        } asm_wrapper;
+
+        // Construction and destruction handled by SourceFile.
+        InnerUnion() {};
+        ~InnerUnion() {};
+    } m_source_file;
+    SourceFileType m_file_type;
+    std::string m_src_dir;
+};
+
+#endif // SOURCE_FILE_H
+