Tools to convert a file to c array

file2c converts any file into a C array.
Particularly useful for loading an image file into flash.
This commit is contained in:
Andrew Hannam 2013-04-04 16:58:48 +10:00
parent 40e6d9c532
commit b95151c7c2
8 changed files with 284 additions and 0 deletions

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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2012
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "file2c", "file2c\file2c.vcxproj", "{16787B20-A841-4DC1-9C15-E6677A0D7342}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Win32 = Debug|Win32
Release|Win32 = Release|Win32
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{16787B20-A841-4DC1-9C15-E6677A0D7342}.Debug|Win32.ActiveCfg = Debug|Win32
{16787B20-A841-4DC1-9C15-E6677A0D7342}.Debug|Win32.Build.0 = Debug|Win32
{16787B20-A841-4DC1-9C15-E6677A0D7342}.Debug|Win32.Deploy.0 = Debug|Win32
{16787B20-A841-4DC1-9C15-E6677A0D7342}.Release|Win32.ActiveCfg = Release|Win32
{16787B20-A841-4DC1-9C15-E6677A0D7342}.Release|Win32.Build.0 = Release|Win32
{16787B20-A841-4DC1-9C15-E6677A0D7342}.Release|Win32.Deploy.0 = Release|Win32
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
EndGlobal

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<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup Label="ProjectConfigurations">
<ProjectConfiguration Include="Debug|Win32">
<Configuration>Debug</Configuration>
<Platform>Win32</Platform>
</ProjectConfiguration>
<ProjectConfiguration Include="Release|Win32">
<Configuration>Release</Configuration>
<Platform>Win32</Platform>
</ProjectConfiguration>
</ItemGroup>
<ItemGroup>
<ClCompile Include="..\..\file2c.c" />
</ItemGroup>
<PropertyGroup Label="Globals">
<ProjectGuid>{16787B20-A841-4DC1-9C15-E6677A0D7342}</ProjectGuid>
<Keyword>Win32Proj</Keyword>
<RootNamespace>file2c</RootNamespace>
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
<ConfigurationType>Application</ConfigurationType>
<UseDebugLibraries>true</UseDebugLibraries>
<PlatformToolset>v110</PlatformToolset>
<CharacterSet>Unicode</CharacterSet>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
<ConfigurationType>Application</ConfigurationType>
<UseDebugLibraries>false</UseDebugLibraries>
<PlatformToolset>v110</PlatformToolset>
<WholeProgramOptimization>true</WholeProgramOptimization>
<CharacterSet>Unicode</CharacterSet>
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
<ImportGroup Label="ExtensionSettings">
</ImportGroup>
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
</ImportGroup>
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
</ImportGroup>
<PropertyGroup Label="UserMacros" />
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<LinkIncremental>true</LinkIncremental>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<LinkIncremental>false</LinkIncremental>
</PropertyGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<PrecompiledHeader>
</PrecompiledHeader>
<WarningLevel>Level3</WarningLevel>
<Optimization>Disabled</Optimization>
<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
</Link>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level3</WarningLevel>
<PrecompiledHeader>
</PrecompiledHeader>
<Optimization>MaxSpeed</Optimization>
<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
</Link>
</ItemDefinitionGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">
</ImportGroup>
</Project>

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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<Filter Include="Source Files">
<UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
<Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
</Filter>
<Filter Include="Header Files">
<UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
<Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
</Filter>
<Filter Include="Resource Files">
<UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
<Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
</Filter>
</ItemGroup>
<ItemGroup>
<ClCompile Include="..\..\file2c.c">
<Filter>Source Files</Filter>
</ClCompile>
</ItemGroup>
</Project>

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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup />
</Project>

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#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#ifdef WIN32
#include <io.h>
#endif
static unsigned char buf[1024];
static char *filenameof(char *fname) {
char *p;
#ifdef WIN32
if (fname[1] == ':')
fname = fname+2;
p = strrchr(fname, '\\');
if (p) fname = p+1;
#endif
p = strrchr(fname, '/');
if (p) fname = p+1;
p = strchr(fname, '.');
if (p) *p = 0;
return fname;
}
int main(int argc, char * argv[])
{
char * opt_progname;
char * opt_inputfile;
char * opt_outputfile;
char * opt_arrayname;
int opt_breakblocks;
char * opt_static;
char * opt_const;
FILE * f_input;
FILE * f_output;
unsigned blocknum;
size_t len;
size_t i;
/* Default values for our parameters */
opt_progname = argv[0];
opt_inputfile = 0;
opt_outputfile = 0;
opt_arrayname = 0;
opt_breakblocks = 0;
opt_static = "";
opt_const = "";
/* Read the arguments */
while(*++argv) {
if (argv[0][0] == '-') {
while (*++(argv[0])) {
switch(argv[0][0]) {
case 'b': opt_breakblocks = 1; break;
case 'c': opt_const = "const "; break;
case 's': opt_static = "static "; break;
case 'n': opt_arrayname = *++argv; goto nextarg;
default:
fprintf(stderr, "Unknown flag -%c\n", argv[0][0]);
goto usage;
}
}
} else if (!opt_inputfile)
opt_inputfile = argv[0];
else if (!opt_outputfile)
opt_outputfile = argv[0];
else {
usage:
fprintf(stderr, "Usage:\n\t%s -?\n"
"\t%s [-bs] [-n name] [inputfile] [outputfile]\n"
"\t\t-?\tThis help\n"
"\t\t-b\tBreak the arrays for compilers that won't handle large arrays\n"
"\t\t-c\tDeclare the arrays as const (useful to ensure they end up in Flash)\n"
"\t\t-s\tDeclare the arrays as static\n"
"\t\t-n name\tUse \"name\" as the name of the array\n"
, opt_progname, opt_progname);
return 1;
}
nextarg: ;
}
/* Open the input file */
if (opt_inputfile) {
f_input = fopen(opt_inputfile,
#ifdef WIN32
"rb");
#else
"r");
#endif
if (!f_input) {
fprintf(stderr, "Could not open input file '%s'\n", opt_inputfile);
goto usage;
}
} else {
f_input = stdin;
#ifdef WIN32
_setmode(_fileno(stdin), _O_BINARY);
#endif
}
/* Open the output file */
if (opt_outputfile) {
f_output = fopen(opt_outputfile, "w");
if (!f_output) {
fprintf(stderr, "Could not open output file '%s'\n", opt_outputfile);
goto usage;
}
} else
f_output = stdout;
/* Set the array name */
if (!opt_arrayname) {
if (opt_inputfile)
opt_arrayname = filenameof(opt_inputfile);
if (!opt_arrayname || !opt_arrayname[0])
opt_arrayname = "filearray";
}
/* Read the file processing 1K at a time */
blocknum = 0;
while((len = fread(buf, 1, sizeof(buf), f_input))) {
if (!blocknum++)
fprintf(f_output, "%s%sunsigned char %s[] = {", opt_static, opt_const, opt_arrayname);
else if (opt_breakblocks)
fprintf(f_output, "\n};\n%s%sunsigned char %s_p%u[] = {", opt_static, opt_const, opt_arrayname, blocknum);
for(i = 0; i < len; i++) {
fprintf(f_output, (i & 0x0F) ? ", 0x%02X" : "\n\t0x%02X", buf[i]);
}
}
fprintf(f_output, "\n};\n");
/* Clean up */
if (ferror(f_input))
fprintf(stderr, "Input file read error\n");
if (ferror(f_output))
fprintf(stderr, "Output file write error - disk full?\n");
if (f_input != stdin)
fclose(f_input);
if (f_output != stdout)
fclose(f_output);
return 0;
}

8
tools/file2c/readme.txt Normal file
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This utility converts a file (of any type) into a c array
so that it can be compiled into your project.
For example:
file2c -cs test.bmp test-image.h
For usage instructions:
file2c -?