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- #include "popen.h"
- #include <stdlib.h>
- #include <io.h>
- #include <string.h>
- #include <process.h>
-
- #ifdef OS2
- #ifdef _MSC_VER
- #define popen(c,m) _popen(c,m)
- #define pclose(f) _pclose(f)
- #endif
- #endif
-
- #ifndef _NFILE
- #define _NFILE 40
- #endif
-
- static char template[] = "piXXXXXX";
- typedef enum { unopened = 0, reading, writing } pipemode;
- static
- struct {
- char *command;
- char *name;
- pipemode pmode;
- } pipes[_NFILE];
-
- FILE *
- os_popen( char *command, char *mode ) {
- FILE *current;
- char *name;
- int cur;
- pipemode curmode;
-
- #if defined(OS2) && (_MSC_VER != 510)
- if (_osmode == OS2_MODE)
- return(popen(command, mode));
- #endif
-
- /*
- ** decide on mode.
- */
- if(strcmp(mode,"r") == 0)
- curmode = reading;
- else if(strcmp(mode,"w") == 0)
- curmode = writing;
- else
- return NULL;
- /*
- ** get a name to use.
- */
- if((name = tempnam(".","pip"))==NULL)
- return NULL;
- /*
- ** If we're reading, just call system to get a file filled with
- ** output.
- */
- if(curmode == reading) {
- char cmd[256];
- sprintf(cmd,"%s > %s",command,name);
- system(cmd);
- if((current = fopen(name,"r")) == NULL)
- return NULL;
- } else {
- if((current = fopen(name,"w")) == NULL)
- return NULL;
- }
- cur = fileno(current);
- pipes[cur].name = name;
- pipes[cur].pmode = curmode;
- pipes[cur].command = strdup(command);
- return current;
- }
-
- int
- os_pclose( FILE * current) {
- int cur = fileno(current),rval;
-
- #if defined(OS2) && (_MSC_VER != 510)
- if (_osmode == OS2_MODE)
- return(pclose(current));
- #endif
-
- /*
- ** check for an open file.
- */
- if(pipes[cur].pmode == unopened)
- return -1;
- if(pipes[cur].pmode == reading) {
- /*
- ** input pipes are just files we're done with.
- */
- rval = fclose(current);
- unlink(pipes[cur].name);
- } else {
- /*
- ** output pipes are temporary files we have
- ** to cram down the throats of programs.
- */
- char command[256];
- fclose(current);
- sprintf(command,"%s < %s",pipes[cur].command,pipes[cur].name);
- rval = system(command);
- unlink(pipes[cur].name);
- }
- /*
- ** clean up current pipe.
- */
- pipes[cur].pmode = unopened;
- free(pipes[cur].name);
- free(pipes[cur].command);
- return rval;
- }
-