2 The software in this package is distributed under the GNU General
3 Public License version 2 (with a special exception described below).
5 A copy of GNU General Public License (GPL) is included in this distribution,
6 in the file COPYING.GPL.
8 As a special exception, if other files instantiate templates or use macros
9 or inline functions from this file, or you compile this file and link it
10 with other works to produce a work based on this file, this file
11 does not by itself cause the resulting work to be covered
12 by the GNU General Public License.
14 However the source code for this file must still be made available
15 in accordance with section (3) of the GNU General Public License.
17 This exception does not invalidate any other reasons why a work based
18 on this file might be covered by the GNU General Public License.
20 /***************************************************************************
21 inpipestream.hxx - C++ streambuffer wrapper
23 begin : Thu Dec 27 2001
24 copyright : (C) 2001 by Intra2net AG
25 ***************************************************************************/
39 #include <stringfunc.hxx>
43 /** if the program exited normally and returned a return code */
46 /** the real return code of the program, only set when normal_exit true */
49 /** if the program was terminated by a signal */
50 bool terminated_by_signal;
52 /** number of the signal that terminated the program, only valid when terminated_by_signal true */
55 /** errormessage if we have one */
56 std::string error_message;
58 inline std::string format (void) const
60 return std::string ("(")
61 + "(normal_exit " + (this->normal_exit ? "T" : "F") + ") "
62 "(return_code '" + I2n::to_string ((int)this->return_code) + "') "
63 "(signal " + (this->terminated_by_signal
64 ? strsignal (this->signal)
69 typedef struct ExecResult ExecResult;
71 std::string capture_exec(const std::string& command, ExecResult &rescode);
72 std::string capture_exec(const char *const *command, ExecResult &rescode,
73 const bool out=true, const bool err=false,
74 const bool path=false, const bool env=false);
75 std::string capture_exec(const std::vector<std::string>& command, ExecResult &rescode,
76 const bool out=true, const bool err=false,
77 const bool path=false, const bool env=false);
79 inline std::string capture_exec (const std::string &command)
82 return capture_exec(command,r);
85 inline std::string capture_exec(const char *const *command)
88 return capture_exec(command,r);
91 inline std::string capture_exec(const std::vector<std::string>& command)
94 return capture_exec(command,r);
97 /** @brief runs command and provides buffered input for it through pipe
99 * opens pipe to command using popen; exit status available after destruction
100 * (use WEXITSTATUS to get the "regular" return code (lowest byte))
102 * ATTENTION: A lot of mysterious STL bugs occured
103 * with a "real" buffer (buffer larger than 1 byte and up to 100 bytes)
104 * -> Keep it slow and working!
106 class inpipebuf : public std::streambuf
114 // "callback" variables for destructor to store exit status
119 inpipebuf(const std::string& command,
120 const bool out, const bool err, const bool path, const bool env);
121 inpipebuf(const char *const *command,
122 const bool out, const bool err, const bool path, const bool env);
123 inpipebuf(const std::vector<std::string> &command,
124 const bool out, const bool err, const bool path, const bool env);
128 void store_exit_status(bool *_status_set, int *_exit_status);
131 virtual int_type underflow();
134 std::pair <pid_t, FILE *>
135 init_without_shell (const char *const *argv,
136 const bool out, const bool err,
137 const bool path, const bool env) const;
140 /** @brief stream around inpipebuf -- see comment there */
141 class inpipestream : public std::istream
147 inpipestream(const std::string& command,
148 const bool out=true, const bool err=false,
149 const bool path=false, const bool env=false)
150 : std::istream(&buf), buf(command, out, err, path, env)
153 inpipestream(const char *const command[],
154 const bool out=true, const bool err=false,
155 const bool path=false, const bool env=false)
156 : std::istream(&buf), buf(command, out, err, path, env)
159 inpipestream(const std::vector<std::string> &command,
160 const bool out=true, const bool err=false,
161 const bool path=false, const bool env=false)
162 : std::istream(&buf), buf(command, out, err, path, env)
165 void store_exit_status(bool *_status_set, int *_exit_status)
166 { buf.store_exit_status(_status_set, _exit_status); }
169 /** @brief runs command and provides buffered ouptput from it through pipe
171 * opens pipe to command using popen; exit status available after destruction
172 * (use WEXITSTATUS to get the "regular" return code (lowest byte))
174 class outpipebuf : public std::streambuf
179 // "callback" variables for destructor to store exit status
184 outpipebuf(const std::string& command);
188 /** note: exit status only available after destruction */
189 void store_exit_status(bool *_status_set, int *_exit_status);
192 virtual int_type overflow(int_type c);
194 virtual std::streamsize xsputn(const char* s, std::streamsize num);
198 /** @brief stream around outpipebuf -- see comment there */
199 class outpipestream : public std::ostream
204 outpipestream(const std::string& command)
205 : std::ostream(&buf), buf(command)
208 void store_exit_status(bool *_status_set, int *_exit_status)
209 { buf.store_exit_status(_status_set, _exit_status); }