addem

#!/bin/bash

# addem: add driver files and edit cfitsio files to set up emscripten driver

# error handler: send to stderr (which will go to stdout for CGI)
error() {
  echo "ERROR: $*" >&2
  exit 1
}

# which version of cfitsio
CFITSIO="cfitsio-4.0.0"
if [ x"$1" != x ]; then
  CFITSIO="$1"
fi
if [ ! -r $CFITSIO ]; then
  error "$CFITSIO directory or link is missing"
fi

echo "adding drvrem files to $CFITSIO ..."

# copy our driver files
cp -p drvrem.c drvrem.h $CFITSIO/.

# go into cfitsio to edit existing files
cd $CFITSIO || error "cannot cd to $CFITSIO"

# add driver to Makefile
if [ -r Makefile.in-orig ]; then
  mv Makefile.in-orig Makefile.in
fi
sed -i -orig 's/drvrnet\.c/drvrnet.c drvrem.c/' Makefile.in

# add driver include file
if [ -r fitsio2.h-orig ]; then
  mv fitsio2.h-orig fitsio2.h
fi
sed -i -orig '/hack for nonunix machines, which lack strcasecmp and strncasecmp/i\
#if __EMSCRIPTEN__\
/* prototypes for emscripten driver I/O routines  */\
#include "drvrem.h"\
#endif\
\
' fitsio2.h

# add driver registration calls
if [ -r cfileio.c-orig ]; then
  mv cfileio.c-orig cfileio.c
fi
sed -i -orig 's/#define MAX_DRIVERS 31/#define MAX_DRIVERS 33/;/Any other threads will now not need to call this routine/i\
#if __EMSCRIPTEN__\
\    /* 32------------ output emscripten https file driver ----------------*/\
\    status = fits_register_driver("@https://",\
\            em_init,\
\            em_shutdown,\
\            em_setoptions,\
\            em_getoptions, \
\            em_getversion,\
\            NULL,            /* checkfile not required */\
\            em_open_https,\
\            NULL,            /* create function not required */\
\            NULL,            /* truncate function not required */\
\            em_close,\
\            NULL,            /* remove function not required */\
\            em_size,\
\            NULL,            /* flush function not required */\
\            em_seek,\
\            em_read,\
\            em_write);\
\
\    if (status)\
\    {\
\        ffpmsg("failed to register the @https:// driver (init_cfitsio)");\
\        FFUNLOCK;\
\        return(status);\
\    }\
\
\    /* 33------------ output emscripten http file driver ----------------*/\
\    status = fits_register_driver("@http://",\
\            em_init,\
\            em_shutdown,\
\            em_setoptions,\
\            em_getoptions, \
\            em_getversion,\
\            NULL,            /* checkfile not required */\
\            em_open_http,\
\            NULL,            /* create function not required */\
\            NULL,            /* truncate function not required */\
\            em_close,\
\            NULL,            /* remove function not required */\
\            em_size,\
\            NULL,            /* flush function not required */\
\            em_seek,\
\            em_read,\
\            em_write);\
\
\    if (status)\
\    {\
\        ffpmsg("failed to register the @http:// driver (init_cfitsio)");\
\        FFUNLOCK;\
\        return(status);\
\    }\
\#endif\
\
' cfileio.c