Encodes images into hexidecimal so they can be

embeded into C/C++ code.


git-svn-id: http://svn.cactuscode.org/arrangements/CactusConnect/HTTPD/trunk@101 1faa4e14-9dd3-4be0-9f0e-ffe519881164

1 files changed, 80 insertions, 0 deletions

diff --git a/src/images/ImageEncoder.c b/src/images/ImageEncoder.c
new file mode 100644
index 0000000..5205614
--- /dev/null
+++ b/src/images/ImageEncoder.c
@@ -0,0 +1,80 @@
+/***********************************************************
+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=3;
+  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 char %s[]={",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\n",varname);
+  fclose(in);
+  if(argc>2) 
+    fclose(out);
+  if(varname) free(varname);
+}
+