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/***********************************************************
ImageEncoder: Standalone program to convert any image into
a static character array (each byte represented in
hexadecimal) in a header file. Use this for any
images that you want to embed in the code so
that it can run standalone (ie. when you are
disconnected from the network). Currently used
to spew out the wwwcactuscodeorg.jpg image used
in thorn_HTTPD through the WebImage.cc extension
to the HTTPD.
Compilation:
$(CC) -o ImageEncoder ImageEncoder.c
Running:
ImageEncoder <inputimage> <outputheader>
This will take the input binary file and create a
header file (something.h) which has the image
encoded as a static character array with the
same name as the input image file (minus the extension.
**************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(int argc,char *argv[]){
char *s;
char *varname=0;
int c,counter=0;
FILE *in,*out;
if(argc<2) {
fprintf(stderr,"Usage: %s <inputimage> <outputheader>\n",argv[0]);
fprintf(stderr,"\tor %s <inputimage> output to stdout\n",argv[0]);
exit(0);
}
in = fopen(argv[1],"r");
if(argc<3)
out=stdout;
else
out = fopen(argv[2],"w");
s = strrchr(argv[1],'/');
if(s){
varname = (char*)malloc(strlen(s)+1);
strcpy(varname,s); /* strip */
}
else{
varname = (char*)malloc(strlen(argv[1])+1);
strcpy(varname,argv[1]);
}
/* printf("VarName=[%s]\n",varname); */
s = strrchr(varname,'.');
if(s){ /* strip .<ext> */
*s='\0';
}
/* Now actually start writing stuff */
fprintf(out,"#ifndef __%s_H_\n#define __%s_H_\n",
varname,varname);
fprintf(out,"\n\n");
fprintf(out,"static unsigned char %s[]={\n",varname);
/* inefficient, but it works */
c=fgetc(in);
while(c!=EOF){
int tmp=c;
c=fgetc(in);
if(c!=EOF)
fprintf(out,"0x%02X,",tmp);
else
fprintf(out,"0x%02X};",tmp);
counter++;
if(!(counter%12))
fprintf(out,"\n\t");
}
fprintf(out,"\n\n#endif /* __%s_H_ */\n",varname);
fclose(in);
if(argc>2)
fclose(out);
if(varname) free(varname);
}
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