| 1 | /*␊ |
| 2 | * shell_process.h␊ |
| 3 | *␊ |
| 4 | * Created by Rekursor on 1/17/2010.␊ |
| 5 | *␊ |
| 6 | */␊ |
| 7 | #ifndef __CHSHELL_PROCESS_H␊ |
| 8 | #define __CHSHELL_PROCESS_H␊ |
| 9 | ␊ |
| 10 | #include <Security/Authorization.h>␊ |
| 11 | #include <stdio.h>␊ |
| 12 | #include <stdlib.h>␊ |
| 13 | #include <errno.h>␊ |
| 14 | #include <sys/stat.h>␊ |
| 15 | #include <vector>␊ |
| 16 | #include <string>␊ |
| 17 | #include "file_util.h"␊ |
| 18 | //----------------------------------------------------------------␊ |
| 19 | const int MAX_HD = 32;␊ |
| 20 | ␊ |
| 21 | //----------------------------------------------------------------␊ |
| 22 | class ShellProcess ␊ |
| 23 | {␊ |
| 24 | public:␊ |
| 25 | ␉// construction / destruction␊ |
| 26 | ␉ShellProcess() { init(); }␊ |
| 27 | ␉ShellProcess(const char * cmd, const char * mode = "r") { init(); open(cmd, mode); }␊ |
| 28 | ␉~ShellProcess() { dealloc(); }␊ |
| 29 | ␉␊ |
| 30 | ␉/// Run the cmd and stores output for further parsing␊ |
| 31 | ␉FILE * open␉(const char *cmd, const char *mode="r");␊ |
| 32 | ␉␊ |
| 33 | ␉/// Close the file␊ |
| 34 | ␉int close();␊ |
| 35 | ␉␊ |
| 36 | ␉/// Get the output file desc ␊ |
| 37 | ␉FILE * desc() const { return _fpt;} // non null if file is open␊ |
| 38 | ␉␊ |
| 39 | ␉/// Get the next line in the output, optionally skip lines until matching line is found␊ |
| 40 | ␉char * get_line(char * line, size_t s, const char *matching=NULL);␊ |
| 41 | std::string get_line(const char * matching=NULL);␊ |
| 42 | ␉/// encapsulates seek to beginning of file with optional relative offset␊ |
| 43 | ␉bool seek_start(long offset=0L )␊ |
| 44 | ␉{␊ |
| 45 | ␉␉return (_fpt && fseek(_fpt, offset, SEEK_SET)==0);␊ |
| 46 | ␉}␊ |
| 47 | ␉␊ |
| 48 | ␉/// true if output file desc is valid␊ |
| 49 | ␉bool is_valid() const { return _fpt!=NULL;}␊ |
| 50 | ␉␊ |
| 51 | protected:␊ |
| 52 | ␉FILE * _fpt;␊ |
| 53 | ␉␊ |
| 54 | private:␊ |
| 55 | ␉void init()␊ |
| 56 | ␉{␊ |
| 57 | ␉␉_fpt= NULL;␊ |
| 58 | ␉}␊ |
| 59 | ␉␊ |
| 60 | ␉void dealloc()␊ |
| 61 | ␉{␊ |
| 62 | ␉␉if (_fpt) ␊ |
| 63 | ␉␉{␊ |
| 64 | ␉␉␉close();␊ |
| 65 | ␉␉␉_fpt = NULL;␊ |
| 66 | ␉␉}␊ |
| 67 | ␉}␊ |
| 68 | };␊ |
| 69 | ␊ |
| 70 | #endif␊ |
| 71 | |
