src/spawn.h

   1 /*
   2  *      spawn.h - this file is part of Geany, a fast and lightweight IDE
   3  *
   4  *      Copyright 2013 Dimitar Toshkov Zhekov <dimitar(dot)zhekov(at)gmail(dot)com>
   5  *
   6  *      This program is free software; you can redistribute it and/or modify
   7  *      it under the terms of the GNU General Public License as published by
   8  *      the Free Software Foundation; either version 2 of the License, or
   9  *      (at your option) any later version.
  10  *
  11  *      This program is distributed in the hope that it will be useful,
  12  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *      GNU General Public License for more details.
  15  *
  16  *      You should have received a copy of the GNU General Public License along
  17  *      with this program; if not, write to the Free Software Foundation, Inc.,
  18  *      51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21
  22 #ifndef GEANY_SPAWN_H
  23 #define GEANY_SPAWN_H 1
  24
  25 #include <glib.h>
  26
  27 #ifdef G_OS_WIN32
  28 # define SPAWN_WIFEXITED(status) TRUE
  29 # define SPAWN_WEXITSTATUS(status) (status)
  30 # define SPAWN_WIFSIGNALED(status) FALSE
  31 #else
  32 # include <sys/types.h>
  33 # include <sys/wait.h>
  34 # define SPAWN_WIFEXITED(status) WIFEXITED(status)      /**< non-zero if the child exited normally */
  35 # define SPAWN_WEXITSTATUS(status) WEXITSTATUS(status)  /**< exit status of a child if exited normally */
  36 # define SPAWN_WIFSIGNALED(status) WIFSIGNALED(status)  /**< non-zero if the child exited due to signal */
  37 #endif
  38
  39 G_BEGIN_DECLS
  40
  41 gboolean spawn_check_command(const gchar *command_line, gboolean execute, GError **error);
  42
  43 gboolean spawn_kill_process(GPid pid, GError **error);
  44
  45 gboolean spawn_async(const gchar *working_directory, const gchar *command_line, gchar **argv,
  46         gchar **envp, GPid *child_pid, GError **error);
  47
  48 /** Flags passed to @c spawn_with_callbacks(), which see. */
  49 typedef enum
  50 {
  51         SPAWN_ASYNC                = 0x00,  /**< Asynchronous execution [default]. */
  52         SPAWN_SYNC                 = 0x01,  /**< Synchronous execution. */
  53         /* buffering modes */
  54         SPAWN_LINE_BUFFERED        = 0x00,  /**< stdout/stderr are line buffered [default]. */
  55         SPAWN_STDOUT_UNBUFFERED    = 0x02,  /**< stdout is not buffered. */
  56         SPAWN_STDERR_UNBUFFERED    = 0x04,  /**< stderr is not buffered. */
  57         SPAWN_UNBUFFERED           = 0x06,  /**< stdout/stderr are not buffered. */
  58         /* recursive modes */
  59         SPAWN_STDIN_RECURSIVE      = 0x08,  /**< The stdin callback is recursive. */
  60         SPAWN_STDOUT_RECURSIVE     = 0x10,  /**< The stdout callback is recursive. */
  61         SPAWN_STDERR_RECURSIVE     = 0x20,  /**< The stderr callback is recursive. */
  62         SPAWN_RECURSIVE            = 0x38   /**< All callbacks are recursive. */
  63 } SpawnFlags;
  64
  65 /**
  66  *  Specifies the type of function passed to @c spawn_with_callbacks() as stdout or stderr
  67  *  callback.
  68  *
  69  *  In unbuffered mode, the @a string may contain nuls, while in line buffered mode, it may
  70  *  contain only a single nul as a line termination character at @a string->len - 1. In all
  71  *  cases, the @a string will be terminated with a nul character that is not part of the data
  72  *  at @a string->len.
  73  *
  74  *  If @c G_IO_IN or @c G_IO_PRI are set, the @a string will contain at least one character.
  75  *
  76  *  @param string contains the child data if @c G_IO_IN or @c G_IO_PRI are set.
  77  *  @param condition the I/O condition which has been satisfied.
  78  *  @param data the passed to @c spawn_with_callbacks() with the callback.
  79  */
  80 typedef void (*SpawnReadFunc)(GString *string, GIOCondition condition, gpointer data);
  81
  82 gboolean spawn_with_callbacks(const gchar *working_directory, const gchar *command_line,
  83         gchar **argv, gchar **envp, SpawnFlags spawn_flags, GIOFunc stdin_cb, gpointer stdin_data,
  84         SpawnReadFunc stdout_cb, gpointer stdout_data, gsize stdout_max_length,
  85         SpawnReadFunc stderr_cb, gpointer stderr_data, gsize stderr_max_length,
  86         GChildWatchFunc exit_cb, gpointer exit_data, GPid *child_pid, GError **error);
  87
  88 /**
  89  *  A simple structure used by @c spawn_write_data() to write data to a channel.
  90  *  See @c spawn_write_data() for more information.
  91  */
  92 typedef struct _SpawnWriteData
  93 {
  94         const gchar *ptr;   /**< Pointer to the data. May be NULL if the size is 0. */
  95         gsize size;         /**< Size of the data. */
  96 } SpawnWriteData;
  97
  98 gboolean spawn_write_data(GIOChannel *channel, GIOCondition condition, SpawnWriteData *data);
  99
 100 gboolean spawn_sync(const gchar *working_directory, const gchar *command_line, gchar **argv,
 101         gchar **envp, SpawnWriteData *stdin_data, GString *stdout_data, GString *stderr_data,
 102         gint *exit_status, GError **error);
 103
 104 G_END_DECLS
 105
 106 #endif  /* GEANY_SPAWN_H */