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 ***************************************************************************/
40 /** if the program exited normally and returned a return code */
43 /** the real return code of the program, only set when normal_exit true */
46 /** if the program was terminated by a signal */
47 bool terminated_by_signal;
49 /** number of the signal that terminated the program, only valid when terminated_by_signal true */
52 /** errormessage if we have one */
53 std::string error_message;
55 typedef struct ExecResult ExecResult;
57 std::string capture_exec(const std::string& command, ExecResult &rescode);
58 std::string capture_exec(const char *const *command, ExecResult &rescode);
59 std::string capture_exec(const std::vector<std::string>& command, ExecResult &rescode);
61 inline std::string capture_exec (const std::string &command)
64 return capture_exec(command,r);
67 inline std::string capture_exec(const char *const *command)
70 return capture_exec(command,r);
73 inline std::string capture_exec(const std::vector<std::string>& command)
76 return capture_exec(command,r);
79 /** @brief runs command and provides buffered input for it through pipe
81 * opens pipe to command using popen; exit status available after destruction
82 * (use WEXITSTATUS to get the "regular" return code (lowest byte))
84 * ATTENTION: A lot of mysterious STL bugs occured
85 * with a "real" buffer (buffer larger than 1 byte and up to 100 bytes)
86 * -> Keep it slow and working!
88 class inpipebuf : public std::streambuf
95 // "callback" variables for destructor to store exit status
100 inpipebuf(const std::string& command);
101 inpipebuf(const char *const *command);
102 inpipebuf(const std::vector<std::string> &command);
106 void store_exit_status(bool *_status_set, int *_exit_status);
109 virtual int_type underflow();
112 FILE *init_without_shell (const char *const *argv) const;
115 /** @brief stream around inpipebuf -- see comment there */
116 class inpipestream : public std::istream
122 inpipestream(const std::string& command)
123 : std::istream(&buf), buf(command)
125 inpipestream(const char *const command[])
126 : std::istream(&buf), buf(command)
129 inpipestream(const std::vector<std::string> &command)
130 : std::istream(&buf), buf(command)
133 void store_exit_status(bool *_status_set, int *_exit_status)
134 { buf.store_exit_status(_status_set, _exit_status); }
137 /** @brief runs command and provides buffered ouptput from it through pipe
139 * opens pipe to command using popen; exit status available after destruction
140 * (use WEXITSTATUS to get the "regular" return code (lowest byte))
142 class outpipebuf : public std::streambuf
147 // "callback" variables for destructor to store exit status
152 outpipebuf(const std::string& command);
156 /** note: exit status only available after destruction */
157 void store_exit_status(bool *_status_set, int *_exit_status);
160 virtual int_type overflow(int_type c);
162 virtual std::streamsize xsputn(const char* s, std::streamsize num);
166 /** @brief stream around outpipebuf -- see comment there */
167 class outpipestream : public std::ostream
172 outpipestream(const std::string& command)
173 : std::ostream(&buf), buf(command)
176 void store_exit_status(bool *_status_set, int *_exit_status)
177 { buf.store_exit_status(_status_set, _exit_status); }