src/gromacs/commandline/viewit.cpp

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  37 /* This file is completely threadsafe - keep it that way! */
  38 #include "gmxpre.h"
  39
  40 #include "viewit.h"
  41
  42 #include <cstdlib>
  43 #include <cstring>
  44
  45 #include "gromacs/commandline/filenm.h"
  46 #include "gromacs/fileio/oenv.h"
  47 #include "gromacs/utility/arraysize.h"
  48 #include "gromacs/utility/cstringutil.h"
  49 #include "gromacs/utility/fatalerror.h"
  50
  51 static const int   can_view_ftp[] = {
  52     0,
  53     efEPS,           efXPM,         efXVG,          efPDB
  54 };
  55 #define NVIEW asize(can_view_ftp)
  56 static const char* view_program[] = {
  57     nullptr,
  58     "ghostview",    "display",      nullptr,           "xterm -e rasmol"
  59 };
  60
  61 static int can_view(int ftp)
  62 {
  63     int i;
  64
  65     for (i = 1; i < NVIEW; i++)
  66     {
  67         if (ftp == can_view_ftp[i])
  68         {
  69             return i;
  70         }
  71     }
  72
  73     return 0;
  74 }
  75
  76 void do_view(const gmx_output_env_t *oenv, const char *fn, const char *opts)
  77 {
  78     char        buf[STRLEN], env[STRLEN];
  79     const char *cmd;
  80     int         ftp, n;
  81
  82     if (output_env_get_view(oenv) && fn)
  83     {
  84         if (getenv("DISPLAY") == nullptr)
  85         {
  86             fprintf(stderr, "Can not view %s, no DISPLAY environment variable.\n", fn);
  87         }
  88         else
  89         {
  90             ftp = fn2ftp(fn);
  91             sprintf(env, "GMX_VIEW_%s", ftp2ext(ftp));
  92             upstring(env);
  93             switch (ftp)
  94             {
  95                 case efXVG:
  96                     if (!(cmd = getenv(env)) )
  97                     {
  98                         if (getenv("GMX_USE_XMGR") )
  99                         {
 100                             cmd = "xmgr";
 101                         }
 102                         else
 103                         {
 104                             cmd = "xmgrace";
 105                         }
 106                     }
 107                     break;
 108                 default:
 109                     if ( (n = can_view(ftp)) )
 110                     {
 111                         if (!(cmd = getenv(env)) )
 112                         {
 113                             cmd = view_program[n];
 114                         }
 115                     }
 116                     else
 117                     {
 118                         fprintf(stderr, "Don't know how to view file %s", fn);
 119                         return;
 120                     }
 121             }
 122             if (strlen(cmd) )
 123             {
 124                 sprintf(buf, "%s %s %s &", cmd, opts ? opts : "", fn);
 125                 fprintf(stderr, "Executing '%s'\n", buf);
 126                 if (0 != system(buf) )
 127                 {
 128                     gmx_fatal(FARGS, "Failed executing command: %s", buf);
 129                 }
 130             }
 131         }
 132     }
 133 }
 134
 135 void view_all(const gmx_output_env_t *oenv, int nf, t_filenm fnm[])
 136 {
 137     int i;
 138
 139     for (i = 0; i < nf; i++)
 140     {
 141         if (can_view(fnm[i].ftp) && is_output(&(fnm[i])) &&
 142             ( !is_optional(&(fnm[i])) || is_set(&(fnm[i])) ) )
 143         {
 144             do_view(oenv, fnm[i].fns[0], nullptr);
 145         }
 146     }
 147 }