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 /** if the program exited normally and returned a return code */
42 /** the real return code of the program, only set when normal_exit true */
45 /** if the program was terminated by a signal */
46 bool terminated_by_signal;
48 /** number of the signal that terminated the program, only valid when terminated_by_signal true */
51 /** errormessage if we have one */
52 std::string error_message;
54 typedef struct ExecResult ExecResult;
56 std::string capture_exec(const std::string& command, ExecResult &rescode);
57 std::string capture_exec(const char *const *command, ExecResult &rescode);
59 inline std::string capture_exec (const std::string &command)
62 return capture_exec(command,r);
65 inline std::string capture_exec(const char *const *command)
68 return capture_exec(command,r);
71 /** @brief runs command and provides buffered input for it through pipe
73 * opens pipe to command using popen; exit status available after destruction
74 * (use WEXITSTATUS to get the "regular" return code (lowest byte))
76 * ATTENTION: A lot of mysterious STL bugs occured
77 * with a "real" buffer (buffer larger than 1 byte and up to 100 bytes)
78 * -> Keep it slow and working!
80 class inpipebuf : public std::streambuf
87 // "callback" variables for destructor to store exit status
92 inpipebuf(const std::string& command);
93 inpipebuf(const char *const *command);
97 void store_exit_status(bool *_status_set, int *_exit_status);
100 virtual int_type underflow();
103 FILE *init_without_shell (const char *const *argv) const;
106 /** @brief stream around inpipebuf -- see comment there */
107 class inpipestream : public std::istream
113 inpipestream(const std::string& command)
114 : std::istream(&buf), buf(command)
116 inpipestream(const char *const command[])
117 : std::istream(&buf), buf(command)
120 void store_exit_status(bool *_status_set, int *_exit_status)
121 { buf.store_exit_status(_status_set, _exit_status); }
124 /** @brief runs command and provides buffered ouptput from it through pipe
126 * opens pipe to command using popen; exit status available after destruction
127 * (use WEXITSTATUS to get the "regular" return code (lowest byte))
129 class outpipebuf : public std::streambuf
134 // "callback" variables for destructor to store exit status
139 outpipebuf(const std::string& command);
143 /** note: exit status only available after destruction */
144 void store_exit_status(bool *_status_set, int *_exit_status);
147 virtual int_type overflow(int_type c);
149 virtual std::streamsize xsputn(const char* s, std::streamsize num);
153 /** @brief stream around outpipebuf -- see comment there */
154 class outpipestream : public std::ostream
159 outpipestream(const std::string& command)
160 : std::ostream(&buf), buf(command)
163 void store_exit_status(bool *_status_set, int *_exit_status)
164 { buf.store_exit_status(_status_set, _exit_status); }